Auxiliary control method and device for water-based metal battery energy storage power station, electronic equipment and medium

Abstract

The invention provides an auxiliary control method and device for an aqueous metal battery energy storage power station, electronic equipment and a medium. The method comprises the following steps: acquiring an operation state of the aqueous metal battery energy storage power station; according to the operation state, when it is determined that an emergency stop button signal of an energy storage unit of the water-based metal battery energy storage power station exists, a corresponding preset emergency stop signal value is combined for comparison; and when it is determined that the signal of the scram button is a preset scram signal value, a global shutdown strategy is selected and executed, so that energy storage converters of phase change cabins of all the energy storage units are controlled to be locked, and air conditioners and fans of heat management systems of battery cabins of all the energy storage units are controlled to be shut down. According to the method, active and quantitative risk management is realized to effectively restrain accidents, when new equipment is added to the power station or new control logic is needed, only new strategies need to be added to the strategy library, the whole framework does not need to be changed, and the method has extremely high expandability and wide engineering application value.

Description

Auxiliary control methods, devices, electronic equipment and media for hydrometal battery energy storage power stations Technical Field

[0001] This invention relates to the field of intelligent control technology, and in particular to an auxiliary control method, device, electronic equipment and medium for a water-based metal battery energy storage power station. Background Technology

[0002] As the global strategy of "peaking carbon and achieving carbon neutrality" continues to advance, the proportion of renewable energy sources, such as wind and solar power, in the energy mix continues to rise. However, their inherent characteristics of intermittency, volatility, and unpredictability pose a serious challenge to the stable operation and real-time balance of power systems. Therefore, developing large-scale, high-efficiency, and long-duration grid-scale energy storage technologies has become a key link in building new power systems and ensuring energy security.

[0003] Among numerous energy storage technologies, electrochemical energy storage is highly favored due to its advantages such as flexible deployment, rapid response, and lack of geographical limitations. While lithium-ion batteries have achieved commercial application, their organic electrolyte systems pose safety risks due to flammability and explosion, and the geopolitical constraints and cost pressures of lithium resources are becoming increasingly prominent. Against this backdrop, aqueous metal batteries based on aqueous electrolytes have emerged and are considered a highly promising next-generation large-scale energy storage technology. Aqueous electrolytes endow the battery system with inherent high safety, environmental friendliness, and low manufacturing costs.

[0004] However, as aqueous metal batteries move from laboratory-scale cells to megawatt-hour-level energy storage power stations, their complex electrochemical side reactions and stringent operating environment requirements have become bottlenecks restricting their industrialization. Existing battery management systems in energy storage power stations primarily focus on monitoring and balancing the macroscopic states of the battery pack (such as State of Charge (SOC) and State of Health (SOH), lacking refined and coordinated control of key microscopic states and external environmental parameters that induce these side reactions. Auxiliary control equipment typically operates independently, with relatively coarse control strategies, making it difficult to form closed-loop optimization and thus failing to create an optimal and stable internal electrochemical environment for aqueous metal batteries. Summary of the Invention

[0005] This invention provides an auxiliary control method, device, electronic equipment, and medium for an aqueous metal battery energy storage power station. It addresses the shortcomings of existing auxiliary control equipment in terms of relatively crude control strategies, which fail to create an optimal and stable internal electrochemical environment for aqueous metal batteries. This invention enables proactive and quantitative risk management, effectively curbs accidents, and creates an optimal and stable electrochemical environment for aqueous metal batteries.

[0006] This invention provides an auxiliary control method for an aqueous metal battery energy storage power station, comprising: acquiring the operating status of the aqueous metal battery energy storage power station; determining, based on the operating status, that when an emergency stop button signal of an energy storage unit of the aqueous metal battery energy storage power station exists, comparing it with a corresponding preset emergency stop signal value; determining that the emergency stop button signal is a preset emergency stop signal value, selecting and executing a global shutdown strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and controlling the shutdown of the air conditioning and fan of the thermal management system of the battery compartment of each energy storage unit.

[0007] According to the auxiliary control method of the aqueous metal battery energy storage power station provided by the present invention, when it is determined that there is an emergency stop button signal of the energy storage unit of the aqueous metal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not a preset emergency stop signal value, and when it is determined that there is a cell temperature of each battery module in the battery compartment of each energy storage unit in the aqueous metal battery energy storage power station according to the operating state, the maximum cell temperature and minimum cell temperature in each battery compartment are determined according to the cell temperature of each battery module in the battery compartment of each energy storage unit; for each battery compartment, according to the corresponding maximum cell temperature, a preset cell temperature threshold matching it is called, and according to the comparison results of the maximum cell temperature and minimum cell temperature with the corresponding preset cell temperature threshold, a corresponding control strategy is selected and executed to control the thermal management system in the battery compartment to switch between cooling or heating modes, and to control the start and stop of the thermal management system in the battery compartment.

[0008] According to the present invention, an auxiliary control method for a hydroelectric metal battery energy storage power station includes, for each battery compartment, calling a preset cell temperature threshold matched with the maximum temperature of the corresponding cell, and selecting and executing a corresponding control strategy based on comparisons between the maximum and minimum cell temperatures and the corresponding preset cell temperature thresholds, to control the thermal management system within the battery compartment to switch between cooling and heating modes, and to control the start and stop of the thermal management system within the battery compartment. The method includes: for each battery compartment, determining the heat load level of the corresponding battery compartment based on the maximum temperature of the corresponding cell; when the heat load level of the battery compartment is determined to be high, calling a first preset cell temperature threshold and a second preset cell temperature threshold matched with it; wherein... The second preset cell temperature threshold is less than the first preset cell temperature threshold; comparing the maximum cell temperature with the first preset cell temperature threshold, when it is determined that the maximum cell temperature is greater than or equal to the first preset cell temperature threshold, a cooling strategy of the thermal management system is selected and executed to control the thermal management system in the corresponding battery compartment to switch to cooling mode, and to control the air conditioner and fan of the thermal management system to start synchronously; and comparing the minimum cell temperature with the second preset cell temperature threshold, when it is determined that the minimum cell temperature is less than or equal to the second preset cell temperature threshold, a cooling stop strategy of the thermal management system is selected and executed to control the thermal management system in the corresponding battery compartment to stop cooling, and to control the air conditioner and fan of the thermal management system to stop synchronously.

[0009] According to the auxiliary control method of a hydrometal battery energy storage power station provided by the present invention, for each battery compartment, based on the maximum temperature of the corresponding battery cell, a preset battery cell temperature threshold is invoked, and based on the comparison results of the maximum and minimum battery cell temperatures with the corresponding preset battery cell temperature thresholds, a corresponding control strategy is selected and executed to control the thermal management system in the battery compartment to switch between cooling and heating modes, and to control the start and stop of the thermal management system in the battery compartment. The method further includes: when the heat load level of the battery compartment is determined to be low, invoking a third preset battery cell temperature threshold and a fourth preset battery cell temperature threshold; wherein the third preset battery cell temperature threshold is lower than the fourth preset... Cell temperature threshold; compare the maximum cell temperature with the third preset cell temperature threshold, and when the maximum cell temperature is less than or equal to the third preset cell temperature threshold, select and execute the heating strategy of the thermal management system to control the thermal management system in the corresponding battery compartment to switch to heating mode, and control the air conditioner and fan of the thermal management system to start synchronously; and compare the minimum cell temperature with the fourth preset cell temperature threshold, and when the minimum cell temperature is greater than or equal to the fourth preset cell temperature threshold, select and execute the heating stop strategy of the thermal management system to control the thermal management system in the corresponding battery compartment to stop heating, and control the air conditioner and fan of the thermal management system to stop synchronously.

[0010] According to the auxiliary control method of the hydrometal battery energy storage power station provided by the present invention, when it is determined that there is an emergency stop button signal of an energy storage unit in the hydrometal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not a preset emergency stop signal value, based on the operating state, when it is determined that there is an ambient temperature of the phase change chamber of each energy storage unit in the hydrometal battery energy storage power station, and compared with the corresponding phase change chamber temperature threshold, if it is determined that the ambient temperature of the phase change chamber is greater than or equal to a first preset phase change chamber temperature threshold, a phase change chamber transformer fan start-up strategy is selected and executed to control the start-up of the corresponding phase change chamber transformer fan; if it is determined that the ambient temperature of the phase change chamber is less than or equal to a second preset phase change chamber temperature threshold, a phase change chamber transformer fan shutdown strategy is selected and executed to control the shutdown of the corresponding phase change chamber transformer fan.

[0011] According to the auxiliary control method of the aqueous metal battery energy storage power station provided by the present invention, when it is determined that there is an emergency stop button signal of an energy storage unit in the aqueous metal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not a preset emergency stop signal value, based on the operating state, when it is determined that there is hydrogen concentration in the battery compartment of each energy storage unit in the aqueous metal battery energy storage power station, it is compared with the corresponding preset concentration threshold. When it is determined that the hydrogen concentration is greater than the preset concentration threshold, a ventilation strategy is selected and executed to control the lockout of the energy storage converter in the phase change compartment of the corresponding energy storage unit, and the air conditioner and fan of the thermal management system of the battery compartment of the corresponding energy storage unit are started simultaneously; when it is determined that the hydrogen concentration is equal to the preset concentration threshold, a maintenance state operation strategy is selected and executed to maintain the current operating state without performing additional control actions.

[0012] According to the auxiliary control method of a hydrometal battery energy storage power station provided by the present invention, when it is determined that there is an emergency stop button signal of an energy storage unit in the hydrometal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not a preset emergency stop signal value, based on the operating status, when it is determined that there is a fire signal of each energy storage unit in the hydrometal battery energy storage power station, comparing it with the corresponding preset emergency stop signal value, and when it is determined that the emergency stop button signal is a preset emergency stop signal value, selecting and executing a full-domain shutdown strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and controlling the shutdown of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit; when it is determined that the signal type is a fire signal, based on the fire signal, comparing it with the corresponding preset fire signal value, and when it is determined that the fire signal is a preset fire signal value, selecting and executing a fire emergency control strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and controlling the start of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

[0013] This invention also provides an auxiliary control device for a hydrometal battery energy storage power station, comprising: a status acquisition module for acquiring the operating status of the hydrometal battery energy storage power station; a judgment module for determining, based on the operating status, when an emergency stop button signal of an energy storage unit of the hydrometal battery energy storage power station is present, comparing it with a corresponding preset emergency stop signal value; and an auxiliary control module for selecting and executing a global shutdown strategy when the emergency stop button signal is determined to be a preset emergency stop signal value, thereby controlling the interlocking of the energy storage converter in the phase change compartment of each energy storage unit and controlling the shutdown of the air conditioning and fan of the thermal management system of the battery compartment of each energy storage unit.

[0014] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the auxiliary control method for the hydroelectric metal battery energy storage power station as described above.

[0015] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the auxiliary control method for a hydroelectric metal battery energy storage power station as described above.

[0016] The present invention also provides a computer program product, including a computer program, which, when executed by a processor, implements the auxiliary control method for a hydroelectric metal battery energy storage power station as described above.

[0017] The auxiliary control method, device, electronic equipment, and medium for a hydrometal battery energy storage power station provided by this invention acquire the operating status of the hydrometal battery energy storage power station to adapt to different operating conditions, providing a data basis for decision-making. By comparing with corresponding preset thresholds, corresponding preset control strategies are triggered to achieve proactive and quantitative risk management and automated response, effectively curbing accidents. When new equipment is added to the power station or new control logic is required, only new strategies need to be added to the strategy library without changing the entire framework. It can support the expansion and access of new sensor parameters and control equipment, and has strong scalability and wide engineering application value. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 is a flowchart illustrating one of the auxiliary control methods for an aqueous metal battery energy storage power station provided by the present invention; Figure 2 is a flowchart illustrating another of the auxiliary control methods for an aqueous metal battery energy storage power station provided by the present invention; Figure 3 is a flowchart illustrating a third of the auxiliary control methods for an aqueous metal battery energy storage power station provided by the present invention; Figure 4 is a flowchart illustrating a fourth of the auxiliary control methods for an aqueous metal battery energy storage power station provided by the present invention; Figure 5 is a flowchart illustrating a fifth of the auxiliary control methods for an aqueous metal battery energy storage power station provided by the present invention; Figure 6 is a flowchart illustrating a sixth of the auxiliary control methods for an aqueous metal battery energy storage power station provided by the present invention; Figure 7 is a structural schematic diagram of the auxiliary control device for an aqueous metal battery energy storage power station provided by the present invention; Figure 8 is a structural schematic diagram of the electronic device provided by the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0021] Figure 1 is a flowchart illustrating the auxiliary control method for an aqueous metal battery energy storage power station provided by the present invention. As shown in Figure 1, the method includes: S11, acquiring the operating status of the aqueous metal battery energy storage power station; S12, based on the operating status, when it is determined that there is an emergency stop button signal for an energy storage unit of the aqueous metal battery energy storage power station, comparing it with the corresponding preset emergency stop signal value; S13, when it is determined that the emergency stop button signal is the preset emergency stop signal value, selecting and executing a full-domain shutdown strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and controlling the shutdown of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

[0022] It should be noted that the step number "S1N" in this specification does not represent the order of the auxiliary control method of the aqueous metal battery energy storage power station. The auxiliary control method of the aqueous metal battery energy storage power station of the present invention will be described in detail below with reference to Figures 2-6.

[0023] Step S11: Obtain the operating status of the water-based metal battery energy storage power station.

[0024] It should be added that the aqueous metal battery energy storage power station includes multiple energy storage units, each comprising a battery compartment and a phase change compartment. The battery compartment includes battery modules, a battery management system (BMS), a thermal management system, and a fire suppression system. The BMS collects the temperature of the corresponding battery module cells and communicates with the control center. The thermal management system includes air conditioning and fans. The fire suppression system detects smoke, temperature, and hydrogen concentration within the battery compartment. The phase change compartment includes a power converter (PCS) and a transformer. Accordingly, the operating status includes at least one of the following: the cell temperature of the battery modules in each battery compartment of the aqueous metal battery energy storage power station; the ambient temperature of the phase change compartment; the hydrogen concentration in the battery compartment; and the emergency stop button signal and fire suppression signal of each energy storage unit.

[0025] Step S12: Based on the operating status, when it is determined that there is an emergency stop button signal for the energy storage unit of the water-based metal battery energy storage power station, compare it with the corresponding preset emergency stop signal value.

[0026] S13, when the signal of the emergency stop button is determined to be the preset emergency stop signal value, select the global shutdown strategy and execute it to control the lockout of the energy storage converter in the phase change compartment of each energy storage unit, and control the shutdown of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

[0027] In an optional embodiment, when it is determined that there is an emergency stop button signal for an energy storage unit in the aqueous metal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not a preset emergency stop signal value, based on the operating status, when it is determined that the cell temperature of each battery module in the battery compartment of each energy storage unit in the aqueous metal battery energy storage power station is determined, the maximum cell temperature and minimum cell temperature in each battery compartment are determined based on the cell temperature of each battery module in the battery compartment of each energy storage unit; for each battery compartment, based on the corresponding maximum cell temperature, a preset cell temperature threshold matching it is called, and based on the comparison results of the maximum cell temperature and minimum cell temperature with the corresponding preset cell temperature threshold, a corresponding control strategy is selected and executed to control the thermal management system in the battery compartment to switch between cooling or heating modes, and to control the start and stop of the thermal management system in the battery compartment.

[0028] It should be noted that the maximum and minimum cell temperatures within the battery compartment are determined based on the cell temperatures of each battery module. This allows for timely intervention based on the maximum cell temperature to determine if the safety boundary has been exceeded, preventing the battery modules from operating in overheated or overcooled environments. Furthermore, the minimum cell temperature is compared with the corresponding threshold to control start-up and shutdown, effectively preventing frequent start-ups and shutdowns at critical points. This ensures both battery thermal safety and system energy efficiency.

[0029] Specifically, referring to Figure 2, for each battery compartment, based on the maximum temperature of the corresponding battery cell, a preset battery cell temperature threshold is called. Based on the comparison results of the maximum and minimum battery cell temperatures with the corresponding preset battery cell temperature thresholds, a corresponding control strategy is selected and executed to control the thermal management system within the battery compartment to switch between cooling and heating modes, and to control the start and stop of the thermal management system within the battery compartment. This includes: for each battery compartment, determining the heat load level of the corresponding battery compartment based on the maximum temperature of the corresponding battery cell; when the heat load level of the battery compartment is determined to be high, calling the first and second preset battery cell temperature thresholds; wherein, the second preset battery cell temperature... If the threshold is less than the first preset cell temperature threshold; compare the maximum cell temperature with the first preset cell temperature threshold, and determine that the maximum cell temperature is greater than or equal to the first preset cell temperature threshold, select and execute the thermal management system cooling strategy to control the thermal management system in the corresponding battery compartment to switch to cooling mode, and control the air conditioner and fan of the thermal management system to start synchronously; and compare the minimum cell temperature with the second preset cell temperature threshold, and determine that the minimum cell temperature is less than or equal to the second preset cell temperature threshold, select and execute the thermal management system cooling stop strategy to control the thermal management system in the corresponding battery compartment to stop cooling, and control the air conditioner and fan of the thermal management system to stop synchronously.

[0030] It is worth noting that the heat load level of the battery compartment can be determined based on the range of the maximum temperature of the corresponding battery cell. When the maximum temperature of the battery cell is closer to the first preset battery cell temperature threshold, it is determined to be a high heat load level, and the corresponding first and second preset battery cell temperature thresholds are invoked. In addition, the above strategy is invoked and executed in 10-second cycles. To ensure the real-time performance and stability of temperature regulation, other durations can be selected as the invocation cycle according to actual design requirements; no further limitations are made here.

[0031] It should be added that the first preset cell temperature threshold can be set based on the overheating risk safety boundary of the battery compartment, and the second preset cell temperature threshold can be set based on the hysteresis control strategy. For example, the first preset cell temperature threshold can be 25°C and the second preset cell temperature threshold can be 20°C. No further limitations are made here.

[0032] When the maximum cell temperature is greater than or equal to 25°C, it is determined that there is a risk of local overheating in the battery compartment. The air conditioning cooling mode is immediately activated and the auxiliary fan is turned on at the same time to enhance the circulation of cold air in the compartment and balance the temperature. When the minimum cell temperature is less than or equal to 20°C, it indicates that the overall temperature in the compartment has dropped to a safe range. To avoid excessive cooling energy consumption, the air conditioning cooling is stopped and the fan is turned off. Thus, through dual temperature thresholds and hysteresis control, the equipment is prevented from frequently starting and stopping at the critical point, effectively protecting the equipment, extending the service life of the equipment, and reducing the impact on the power grid.

[0033] Additionally, referring to Figure 3, for each battery compartment, based on the maximum temperature of the corresponding battery cell, a matching preset battery cell temperature threshold is invoked. Based on the comparison results of the maximum and minimum battery cell temperatures with the corresponding matching preset battery cell temperature thresholds, a corresponding control strategy is selected and executed to control the switching of the thermal management system within the battery compartment between cooling and heating modes, and to control the start and stop of the thermal management system within the battery compartment. This also includes: when the heat load level of the battery compartment is determined to be low, invoking a matching third and fourth preset battery cell temperature thresholds; wherein the third preset battery cell temperature threshold is less than the fourth preset battery cell temperature threshold. When comparing the maximum cell temperature with a third preset cell temperature threshold, and determining that the maximum cell temperature is less than or equal to the third preset cell temperature threshold, a heating strategy of the thermal management system is selected and executed to control the thermal management system in the corresponding battery compartment to switch to heating mode, and to control the air conditioner and fan of the thermal management system to start synchronously; and when comparing the minimum cell temperature with a fourth preset cell temperature threshold, and determining that the minimum cell temperature is greater than or equal to the fourth preset cell temperature threshold, a heating stop strategy of the thermal management system is selected and executed to control the thermal management system in the corresponding battery compartment to stop heating, and to control the air conditioner and fan of the thermal management system to stop synchronously.

[0034] Similarly, when the maximum cell temperature is closer to the third preset cell temperature threshold, it is determined to be a low heat load level, and the corresponding third and fourth preset cell temperature thresholds are invoked. It is worth noting that the fourth preset cell temperature threshold is lower than the first preset cell temperature threshold. Furthermore, the invocation cycle of the above strategy is as described above and will not be repeated here.

[0035] It should be added that the third preset cell temperature threshold can be set based on the low temperature risk safety boundary of the battery compartment, and the fourth preset cell temperature threshold can be set based on the hysteresis control strategy. For example, the third preset cell temperature threshold can be 5℃ and the fourth preset cell temperature threshold can be 10℃. No further limitations are made here.

[0036] When the maximum cell temperature is less than or equal to 5°C, the battery is considered to be in a low-temperature environment, which may affect performance and lifespan. The air conditioning heating mode is activated, and the fan is turned on to promote heat distribution. When the minimum cell temperature is greater than or equal to 10°C, it indicates that the compartment has warmed to a suitable temperature. The air conditioning heating mode is stopped, and the fan is turned off. Through this tiered temperature regulation and coordinated equipment control, ineffective operation of the air conditioning and fans can be avoided, reducing the energy consumption of the auxiliary control system. Simultaneously, a suitable operating temperature environment is provided for the cells, extending battery life and improving the overall operational efficiency of the energy storage power station.

[0037] In an optional embodiment, when the maximum cell temperature is determined to be greater than or equal to a first preset cell temperature threshold, a cooling strategy of the thermal management system is selected; or, when the maximum cell temperature is determined to be less than or equal to the third preset cell temperature threshold, a heating strategy of the thermal management system is selected. The method further includes: when the maximum cell temperature is determined to be greater than or equal to the first preset cell temperature threshold, a cooling strategy of the thermal management system is selected; or, when the maximum cell temperature is determined to be less than or equal to the third preset cell temperature threshold, a temperature prediction model is used to predict future temperature trends based on the charge / discharge power and cell temperature change rate within the target time of the hydrometal battery energy storage power station; based on the predicted future temperature trends, if it is determined that a temperature greater than or equal to the first preset cell temperature threshold or a temperature less than or equal to the third preset cell temperature threshold exists in the future, the operating state of the thermal management system is activated or adjusted in advance to achieve predictive thermal management, thereby avoiding drastic temperature fluctuations.

[0038] In addition, controlling the thermal management system in the corresponding battery compartment to switch to cooling mode and controlling the air conditioner and fan of the thermal management system to start synchronously, or controlling the thermal management system in the corresponding battery compartment to switch to heating mode and controlling the air conditioner and fan of the thermal management system to start synchronously, includes: determining the corresponding temperature difference based on the maximum cell temperature and the corresponding preset cell temperature threshold, or based on the maximum cell temperature and the third preset cell temperature threshold; determining the power output value based on the temperature difference using a proportional-integral-gain PID algorithm, and controlling the operation of the corresponding air conditioner and fan according to the range of the power output value.

[0039] Furthermore, controlling the corresponding air conditioner to cool or heat based on the power output value includes: when the power output value is greater than a first preset value, controlling the air conditioner to operate at full power and controlling the fan to operate at full speed; when the power output is less than or equal to the first preset value but greater than a second preset value, controlling the air conditioner to operate at high frequency and controlling the fan to operate at medium speed; when the power output is less than or equal to the second preset value, controlling the air conditioner to operate at low frequency and controlling the fan to operate at low speed.

[0040] In an optional embodiment, referring to Figure 4, when it is determined that there is an emergency stop button signal for an energy storage unit in the aqueous metal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not a preset emergency stop signal value, based on the operating status, when it is determined that there is an ambient temperature of the phase change chamber of each energy storage unit in the aqueous metal battery energy storage power station, it is compared with the corresponding phase change chamber temperature threshold. When it is determined that the ambient temperature of the phase change chamber is greater than or equal to the first preset phase change chamber temperature threshold, a phase change chamber transformer fan start-up strategy is selected and executed to control the corresponding phase change chamber transformer fan to start; when it is determined that the ambient temperature of the phase change chamber is less than or equal to the second preset phase change chamber temperature threshold, a phase change chamber transformer fan shutdown strategy is selected and executed to control the corresponding phase change chamber transformer fan to shut down.

[0041] It should be added that the ambient temperature of the phase change chamber can be detected by the temperature and humidity sensors installed inside the phase change chamber. To ensure the stability of the wind turbine operation, the hysteresis obtained based on the difference between the first preset phase change chamber temperature threshold and the second preset phase change chamber temperature threshold can be set according to actual design requirements and prior experience. The first preset phase change chamber temperature threshold and the second preset phase change chamber temperature threshold can be set according to the actual temperature environment required by the phase change chamber and prior experience. For example, if the hysteresis is 10℃, the first preset phase change chamber temperature threshold can be 50℃ and the second preset phase change chamber temperature threshold can be 40℃. No further limitations are made here.

[0042] In addition, the above strategy is invoked and executed in 10-second cycles. To ensure the real-time performance and stability of temperature regulation, other durations can be selected as the invocation cycle according to actual design requirements. No further restrictions are imposed here.

[0043] When the ambient temperature of the phase change chamber is greater than or equal to 50℃, it indicates that the temperature inside the transformer chamber is too high and there is a risk of thermal failure. The transformer fan in the phase change chamber should be started immediately to provide forced cooling. When the ambient temperature of the phase change chamber is less than or equal to 40℃, the fan should be turned off to save energy.

[0044] In an optional implementation, referring to Figure 5, when it is determined that there is an emergency stop button signal for an energy storage unit in the aqueous metal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the implementation further includes: when it is determined that the emergency stop button signal is not a preset emergency stop signal value, based on the operating status, when it is determined that there is hydrogen concentration in the battery compartment of each energy storage unit in the aqueous metal battery energy storage power station, it is compared with the corresponding preset concentration threshold. When it is determined that the hydrogen concentration is greater than the preset concentration threshold, a ventilation strategy is selected and executed to control the lockout of the corresponding energy storage unit phase change compartment energy converter (PCS) and simultaneously control the start-up of the air conditioner and fan of the thermal management system of the corresponding energy storage unit battery compartment; when it is determined that the hydrogen concentration is equal to the preset concentration threshold, a maintenance state operation strategy is selected and executed to maintain the current operating state without performing additional control actions.

[0045] It should be noted that, given that aqueous metal batteries may produce hydrogen under abnormal conditions, high-frequency monitoring with short intervals, such as 5 seconds, is required to improve the rapid response capability in leakage scenarios. No further limitations are made here. By reading the hydrogen concentration from the fire alarm control panel in real time, a hydrogen leak is identified when the hydrogen concentration is detected to be greater than 0 PPM. In this case, a lockout command is immediately sent to the PCS to immediately stop the charging and discharging process, eliminate potential ignition sources, and activate the air conditioning and all available fans to maximize ventilation, dilute and expel the hydrogen. Prioritizing safety, even if the hydrogen concentration returns to 0, the system will not automatically resume PCS operation; manual confirmation and reset are required to ensure absolute safety.

[0046] In an optional embodiment, referring to Figure 6, when it is determined that there is an emergency stop button signal for an energy storage unit in the water-based metal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not a preset emergency stop signal value, based on the operating status, when it is determined that there is a fire alarm signal for each energy storage unit in the water-based metal battery energy storage power station, comparing it with the corresponding preset emergency stop signal value, and when it is determined that the emergency stop button signal is a preset emergency stop signal value, selecting and executing a full-domain shutdown strategy to control the interlocking of the energy storage inverter in the phase change chamber of each energy storage unit, and controlling the shutdown of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit; when it is determined that the signal type is a fire alarm signal, based on the fire alarm signal, comparing it with the corresponding preset fire alarm signal value, and when it is determined that the fire alarm signal is a preset fire alarm signal value, selecting and executing a fire emergency control strategy to control the interlocking of the energy storage inverter in the phase change chamber of each energy storage unit, and controlling the start of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

[0047] It should be noted that the global shutdown strategy is the highest priority safety strategy. When the emergency stop button is pressed and its signal value changes from 0 to 1, this change is immediately captured. At this time, when the emergency stop button signal is the preset emergency stop signal value, the global shutdown strategy is triggered instantly. This ensures instantaneous response while locking the PCS and controlling the air conditioner and fan to stop, thereby cutting off all potential risk sources and achieving rapid and safe shutdown. This minimizes losses in emergency scenarios. After a comprehensive manual inspection, the system is manually reset.

[0048] In addition, fire signals include three types of remote signaling signals: fire warning, fire sprinkler, and fire fault. When any fire signal is at a preset fire signal value, such as 1, it indicates that a warning has been issued, sprinkler is in operation, or the system itself has malfunctioned. This is considered a fire emergency, which involves locking the PCS and starting the air conditioning and fans to work with the fire protection system to achieve cooling, ventilation, and hazard isolation, in order to remove smoke or prevent the accumulation of flammable gases as much as possible. When all fire signals are non-preset fire signal values, such as 0, it is considered that the fire protection system is completely normal, and the equipment is maintained in normal operating condition. The control cycle of the above strategy is set to 10 seconds to ensure timely response and coordinated handling of fire scenarios.

[0049] It should be added that all of the above auxiliary control methods are implemented in real time. Through preset cycles and strategy triggers, a closed-loop control system is formed, which includes parameter acquisition, logical judgment, equipment control and status feedback. By setting multi-dimensional thresholds such as temperature, hydrogen concentration, emergency signals and fire signals for different scenarios, precise start and stop control of equipment such as air conditioners, fans, PCS, and fire protection can be achieved. This effectively avoids the problems of adjustment lag or excessive energy consumption caused by single parameter control, improves the stability of the energy storage unit's operating environment, realizes independent operation and collaborative linkage, and ensures the overall stability of the auxiliary control system of the energy storage power station.

[0050] In addition, specialized control logic is constructed for three core safety scenarios: hydrogen leakage, emergency stop triggering, and fire malfunction. This enables rapid identification and immediate handling of hazard signals, and prevents the spread of danger through PCS interlocking and equipment start-stop coordination, ensuring the safety of personnel and equipment in the energy storage power station. Furthermore, control cycles are differentiated or value-triggered mechanisms are adopted according to the urgency of different control scenarios to ensure instantaneous response in emergency scenarios such as leakage and emergency stop, while balancing resource consumption in conventional temperature regulation scenarios.

[0051] In summary, this invention acquires the operating status of the aqueous metal battery energy storage power station to adapt to different operating conditions, providing a data foundation for decision-making. By comparing this data with corresponding preset thresholds, it triggers pre-set control strategies, enabling proactive and quantitative risk management and automated response to effectively curb accidents. This creates an optimal and stable electrochemical environment for the aqueous metal battery. When new equipment is added to the power station or new control logic is required, only new strategies need to be added to the strategy library without changing the entire framework. It supports the expansion of new sensor parameters and control equipment, demonstrating strong scalability and broad engineering application value.

[0052] The auxiliary control device for a water-based metal battery energy storage power station provided by the present invention is described below. The auxiliary control device for a water-based metal battery energy storage power station described below can be referred to in correspondence with the auxiliary control method for a water-based metal battery energy storage power station described above.

[0053] Figure 7 shows a schematic diagram of an auxiliary control device for a hydrometal battery energy storage power station. The device includes: a status acquisition module 71, which acquires the operating status of the hydrometal battery energy storage power station; a judgment module 72, which, based on the operating status, determines whether an emergency stop button signal of an energy storage unit of the hydrometal battery energy storage power station exists, and compares it with the corresponding preset emergency stop signal value; and an auxiliary control module 73, which, when determining that the emergency stop button signal is a preset emergency stop signal value, selects and executes a global shutdown strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and controls the shutdown of the air conditioning and fan of the thermal management system of the battery compartment of each energy storage unit.

[0054] In this embodiment, the device further includes: a temperature determination module, which, when determining the presence of an emergency stop button signal for an energy storage unit in a water-based metal battery energy storage power station, compares the signal with a corresponding preset emergency stop signal value and determines that the emergency stop button signal is not a preset emergency stop signal value; and, based on the operating state, determines the cell temperature of each battery module in the battery compartment of each energy storage unit in the water-based metal battery energy storage power station, determines the maximum and minimum cell temperatures in each battery compartment based on the cell temperatures of each battery module in the battery compartment of each energy storage unit; a judgment module 72, which is further configured to, for each battery compartment, call a preset cell temperature threshold that matches the maximum cell temperature; and an auxiliary control module 73, which is further configured to, based on the comparison results of the maximum and minimum cell temperatures with the corresponding preset cell temperature thresholds, select and execute a corresponding control strategy to control the thermal management system in the battery compartment to switch between cooling and heating modes, and to control the start and stop of the thermal management system in the battery compartment.

[0055] Specifically, the auxiliary control module 73 is further configured to: determine the heat load level of each battery compartment based on the maximum temperature of the corresponding battery cell; when the heat load level of the battery compartment is determined to be high, invoke a first preset battery cell temperature threshold and a second preset battery cell temperature threshold that match it; wherein the second preset battery cell temperature threshold is less than the first preset battery cell temperature threshold; compare the maximum battery cell temperature and the first preset battery cell temperature threshold, and when the maximum battery cell temperature is greater than or equal to the first preset battery cell temperature threshold, select and execute a cooling strategy of the thermal management system to control the thermal management system in the corresponding battery compartment to switch to cooling mode, and control the air conditioner and fan of the thermal management system to start synchronously; and compare the minimum battery cell temperature and the second preset battery cell temperature threshold, and when the minimum battery cell temperature is less than or equal to the second preset battery cell temperature threshold, select and execute a cooling stop strategy of the thermal management system to control the thermal management system in the corresponding battery compartment to stop cooling, and control the air conditioner and fan of the thermal management system to stop synchronously.

[0056] In addition, the auxiliary control module 73 is also used to: when the heat load level of the battery compartment is determined to be low, call the matching third preset cell temperature threshold and fourth preset cell temperature threshold; wherein the third preset cell temperature threshold is less than the fourth preset cell temperature threshold; compare the maximum cell temperature with the third preset cell temperature threshold, and when the maximum cell temperature is determined to be less than or equal to the third preset cell temperature threshold, select and execute the heating strategy of the thermal management system to control the thermal management system in the corresponding battery compartment to switch to heating mode, and control the air conditioner and fan of the thermal management system to start synchronously; and compare the minimum cell temperature with the fourth preset cell temperature threshold, and when the minimum cell temperature is determined to be greater than or equal to the fourth preset cell temperature threshold, select and execute the heating stop strategy of the thermal management system to control the thermal management system in the corresponding battery compartment to stop heating, and control the air conditioner and fan of the thermal management system to stop synchronously.

[0057] In an optional embodiment, the auxiliary control module 73 is further configured to: select a cooling strategy for the thermal management system when the maximum cell temperature is greater than or equal to a first preset cell temperature threshold; or, when the maximum cell temperature is less than or equal to the third preset cell temperature threshold, use a temperature prediction model to predict future temperature trends based on the charge / discharge power and cell temperature change rate within the target time of the hydrometal battery energy storage power station; and, based on the predicted future temperature trends, determine whether a temperature greater than or equal to the first preset cell temperature threshold or a temperature less than or equal to the third preset cell temperature threshold exists in the future, and initiate or adjust the operating state of the thermal management system in advance to achieve predictive thermal management, thereby avoiding drastic temperature fluctuations.

[0058] In addition, the auxiliary control module 73 is also used to: determine the corresponding temperature difference based on the maximum temperature of the battery cell and the corresponding preset battery cell temperature threshold, or based on the maximum temperature of the battery cell and the third preset battery cell temperature threshold; determine the power output value based on the temperature difference using a proportional-integral-gain PID algorithm, and control the operation of the corresponding air conditioner and fan according to the range of the power output value.

[0059] Furthermore, when controlling the corresponding air conditioner to cool or heat according to the power output value, the auxiliary control module 73 is also used to: control the air conditioner to operate at full power and control the fan to operate at full speed when the power output value is greater than the first preset value; control the air conditioner to operate at high frequency and control the fan to operate at medium speed when the power output is less than or equal to the first preset value and greater than the second preset value; and control the air conditioner to operate at low frequency and control the fan to operate at low speed when the power output is less than or equal to the second preset value.

[0060] In an optional embodiment, the judgment module 72 is further configured to, when determining the presence of an emergency stop button signal for an energy storage unit in the aqueous metal battery energy storage power station, compare it with the corresponding preset emergency stop signal value and determine that the emergency stop button signal is not a preset emergency stop signal value, and when determining the ambient temperature of the phase change chamber of each energy storage unit in the aqueous metal battery energy storage power station based on the operating status, compare it with the corresponding phase change chamber temperature threshold. The auxiliary control module 73 is further configured to, when determining that the ambient temperature of the phase change chamber is greater than or equal to the first preset phase change chamber temperature threshold, select and execute a phase change chamber transformer fan start-up strategy to control the start of the corresponding phase change chamber transformer fan; and when determining that the ambient temperature of the phase change chamber is less than or equal to the second preset phase change chamber temperature threshold, select and execute a phase change chamber transformer fan shutdown strategy to control the shutdown of the corresponding phase change chamber transformer fan.

[0061] In an optional embodiment, the judgment module 72 is further configured to, when determining the presence of an emergency stop button signal for an energy storage unit in the aqueous metal battery energy storage power station, compare it with a corresponding preset emergency stop signal value; and when determining that the emergency stop button signal is not a preset emergency stop signal value, compare it with a corresponding preset concentration threshold based on the operating status when determining the hydrogen concentration in the battery compartment of each energy storage unit in the aqueous metal battery energy storage power station. The auxiliary control module 73 is further configured to, when determining that the hydrogen concentration is greater than the preset concentration threshold, select and execute a ventilation strategy to control the corresponding energy storage unit's phase change chamber energy converter (PCS) to lock out, and simultaneously control the start-up of the air conditioning and fan of the corresponding energy storage unit's battery compartment's thermal management system; and when determining that the hydrogen concentration is equal to the preset concentration threshold, select to maintain... In one optional embodiment, the judgment module 72 is further configured to, when determining the presence of an emergency stop button signal for an energy storage unit in the water-based metal battery energy storage power station, compare it with the corresponding preset emergency stop signal value, and if the signal is determined to be a non-preset emergency stop signal value, compare it with the corresponding preset fire signal value when determining the presence of a fire signal for each energy storage unit in the water-based metal battery energy storage power station based on the operating state. The auxiliary control module 73 is further configured to, when determining that the fire signal is a preset fire signal value, select and execute a fire emergency control strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and to control the start-up of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

[0062] In summary, this embodiment of the invention acquires the operating status of the hydrometal battery energy storage power station through a status acquisition module, so as to adapt to different operating conditions of the hydrometal battery energy storage power station, providing a data foundation for decision-making. Through the auxiliary control module, it compares with corresponding preset thresholds to trigger corresponding preset control strategies, realizes proactive and quantitative risk management, and automatically responds to effectively curb accidents. When the power station adds new equipment or requires new control logic, it is only necessary to add new strategies to the strategy library without changing the entire framework. It can support the expansion of new sensor parameters and control equipment, and has strong scalability and wide engineering application value.

[0063] Figure 8 illustrates a schematic diagram of the physical structure of an electronic device. As shown in Figure 8, the electronic device may include: a processor 810, a communication interface 820, a memory 830, and a communication bus 840. The processor 810, communication interface 820, and memory 830 communicate with each other via the communication bus 840. The processor 810 can call logical instructions in the memory 830 to execute an auxiliary control method for a hydrometal battery energy storage power station. This method includes: acquiring the operating status of the hydrometal battery energy storage power station; based on the operating status, if an emergency stop button signal for an energy storage unit of the hydrometal battery energy storage power station is detected, comparing it with a corresponding preset emergency stop signal value; if the emergency stop button signal is determined to be the preset emergency stop signal value, selecting and executing a global shutdown strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and controlling the shutdown of the air conditioning and fans of the thermal management system of the battery compartment of each energy storage unit.

[0064] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0065] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the auxiliary control method for the hydrometal battery energy storage power station provided by the above methods. The method includes: acquiring the operating status of the hydrometal battery energy storage power station; when it is determined that there is an emergency stop button signal for the energy storage unit of the hydrometal battery energy storage power station based on the operating status, comparing it with a corresponding preset emergency stop signal value; when it is determined that the emergency stop button signal is a preset emergency stop signal value, selecting and executing a global shutdown strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and controlling the shutdown of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

[0066] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program implements the auxiliary control method for the hydrometal battery energy storage power station provided by the above methods. The method includes: acquiring the operating status of the hydrometal battery energy storage power station; when it is determined that there is an emergency stop button signal for an energy storage unit of the hydrometal battery energy storage power station based on the operating status, comparing it with a corresponding preset emergency stop signal value; when it is determined that the emergency stop button signal is a preset emergency stop signal value, selecting and executing a global shutdown strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and controlling the shutdown of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

[0067] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0068] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for auxiliary control of a hydroelectric metal battery energy storage power station, characterized in that, include: Obtain the operating status of the water-based metal battery energy storage power station; Based on the operating status, when it is determined that there is an emergency stop button signal for the energy storage unit of the water-based metal battery energy storage power station, it is compared with the corresponding preset emergency stop signal value; when it is determined that the signal of the emergency stop button is the preset emergency stop signal value, a full-domain shutdown strategy is selected and executed to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and to control the shutdown of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

2. The auxiliary control method for a hydroelectric metal battery energy storage power station according to claim 1, characterized in that, When it is determined that an emergency stop button signal exists for an energy storage unit of the aqueous metal battery energy storage power station, after comparing it with a corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not the preset emergency stop signal value, based on the operating state, when it is determined that the cell temperature of each battery module in the battery compartment of each energy storage unit in the aqueous metal battery energy storage power station exists, the maximum and minimum cell temperatures in each battery compartment are determined based on the cell temperatures of each battery module in the battery compartment of each energy storage unit; for each battery compartment, based on the corresponding maximum cell temperature, a preset cell temperature threshold matching it is called, and based on the comparison results of the maximum and minimum cell temperatures with the corresponding preset cell temperature thresholds, a corresponding control strategy is selected and executed to control the thermal management system in the battery compartment to switch between cooling and heating modes, and to control the start and stop of the thermal management system in the battery compartment.

3. The auxiliary control method for a hydroelectric metal battery energy storage power station according to claim 2, characterized in that, For each of the aforementioned battery compartments, based on the maximum temperature of the corresponding battery cell, a preset battery cell temperature threshold is invoked. Then, based on comparisons between the maximum and minimum temperatures of the battery cells and the corresponding preset battery cell temperature thresholds, a corresponding control strategy is selected and executed to control the thermal management system within the battery compartment to switch between cooling and heating modes, and to control the start and stop of the thermal management system within the battery compartment. This includes: for each of the aforementioned battery compartments, determining the heat load level of the corresponding battery compartment based on the maximum temperature of the corresponding battery cell; when the heat load level of the battery compartment is determined to be high, invoking a first preset battery cell temperature threshold and a second preset battery cell temperature threshold; wherein, the second preset battery cell temperature threshold is less than the first preset battery cell temperature threshold. A preset cell temperature threshold is defined; when the maximum cell temperature is compared with the first preset cell temperature threshold, and the maximum cell temperature is greater than or equal to the first preset cell temperature threshold, a cooling strategy of the thermal management system is selected and executed to control the thermal management system in the corresponding battery compartment to switch to cooling mode, and to control the air conditioner and fan of the thermal management system to start synchronously; and when the minimum cell temperature is compared with the second preset cell temperature threshold, and the minimum cell temperature is less than or equal to the second preset cell temperature threshold, a cooling stop strategy of the thermal management system is selected and executed to control the thermal management system in the corresponding battery compartment to stop cooling, and to control the air conditioner and fan of the thermal management system to stop synchronously.

4. The auxiliary control method for a hydroelectric metal battery energy storage power station according to claim 3, characterized in that, For each of the aforementioned battery compartments, based on the maximum temperature of the corresponding battery cell, a preset battery cell temperature threshold is invoked. Based on comparisons between the maximum and minimum temperatures of the battery cells and the corresponding preset battery cell temperature thresholds, a corresponding control strategy is selected and executed to control the thermal management system within the battery compartment to switch between cooling and heating modes, and to control the start and stop of the thermal management system within the battery compartment. The method further includes: when the heat load level of the battery compartment is determined to be low, invoking a third and a fourth preset battery cell temperature threshold; wherein the third preset battery cell temperature threshold is less than the fourth preset battery cell temperature threshold; comparing the maximum and minimum temperatures of the battery cells... If the maximum cell temperature is less than or equal to the third preset cell temperature threshold, and the maximum cell temperature is compared with the third preset cell temperature threshold, a heating strategy of the thermal management system is selected and executed to control the thermal management system in the corresponding battery compartment to switch to heating mode, and to control the air conditioner and fan of the thermal management system to start synchronously; and if the minimum cell temperature is compared with the fourth preset cell temperature threshold, and the minimum cell temperature is greater than or equal to the fourth preset cell temperature threshold, a heating stop strategy of the thermal management system is selected and executed to control the thermal management system in the corresponding battery compartment to stop heating, and to control the air conditioner and fan of the thermal management system to stop synchronously.

5. The auxiliary control method for a hydroelectric metal battery energy storage power station according to claim 1, characterized in that, When it is determined that an emergency stop button signal exists for an energy storage unit of the aqueous metal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not the preset emergency stop signal value, based on the operating state, when it is determined that the ambient temperature of the phase change chamber of each energy storage unit in the aqueous metal battery energy storage power station exists, and compared with the corresponding phase change chamber temperature threshold, if it is determined that the ambient temperature of the phase change chamber is greater than or equal to the first preset phase change chamber temperature threshold, a phase change chamber transformer fan start-up strategy is selected and executed to control the start-up of the corresponding phase change chamber transformer fan; if it is determined that the ambient temperature of the phase change chamber is less than or equal to the second preset phase change chamber temperature threshold, a phase change chamber transformer fan shutdown strategy is selected and executed to control the shutdown of the corresponding phase change chamber transformer fan.

6. The auxiliary control method for a hydroelectric metal battery energy storage power station according to claim 1, characterized in that, When an emergency stop button signal for an energy storage unit in the aqueous metal battery energy storage power station is determined to exist, after comparing it with a corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not the preset emergency stop signal value, based on the operating state, when it is determined that there is hydrogen concentration in the battery compartment of each energy storage unit in the aqueous metal battery energy storage power station, it is compared with a corresponding preset concentration threshold. When it is determined that the hydrogen concentration is greater than the preset concentration threshold, a ventilation strategy is selected and executed to control the lockout of the energy storage converter in the phase change compartment of the corresponding energy storage unit, and simultaneously control the start-up of the air conditioner and fan of the thermal management system of the battery compartment of the corresponding energy storage unit; when it is determined that the hydrogen concentration is equal to the preset concentration threshold, a maintenance state operation strategy is selected and executed to maintain the current operating state without performing any additional control actions.

7. The auxiliary control method for a hydroelectric metal battery energy storage power station according to claim 1, characterized in that, When it is determined that an emergency stop button signal exists for an energy storage unit of the water-based metal battery energy storage power station, after comparing it with the corresponding preset emergency stop signal value, the method further includes: when it is determined that the emergency stop button signal is not the preset emergency stop signal value, based on the operating status, when it is determined that a fire signal exists for each energy storage unit in the water-based metal battery energy storage power station, after comparing it with the corresponding preset fire signal value, when it is determined that the fire signal is the preset fire signal value, selecting and executing a fire emergency control strategy to control the interlocking of the energy storage inverter in the phase change compartment of each energy storage unit, and controlling the start-up of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

8. An auxiliary control device for a water-based metal battery energy storage power station, characterized in that, include: The status acquisition module acquires the operating status of the hydrometal battery energy storage power station. The judgment module determines, based on the operating status, that when an emergency stop button signal for the energy storage unit of the water-based metal battery energy storage power station is present, it compares it with the corresponding preset emergency stop signal value. The auxiliary control module determines, when the signal of the emergency stop button is the preset emergency stop signal value, that it selects and executes a global shutdown strategy to control the interlocking of the energy storage converter in the phase change compartment of each energy storage unit, and to control the shutdown of the air conditioner and fan of the thermal management system of the battery compartment of each energy storage unit.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the auxiliary control method for a hydroelectric metal battery energy storage power station as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the auxiliary control method for a hydroelectric metal battery energy storage power station as described in any one of claims 1 to 7.

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