Energy-saving control method for liquid cooling machine of energy storage battery system

By obtaining battery and environmental parameters, calculating the impact value and dynamically adjusting the liquid cooler power, the problem of the liquid cooler being unable to be dynamically adjusted is solved, and efficient energy saving and safe operation of the energy storage battery system are achieved.

CN120601002APending Publication Date: 2025-09-05SHENZHEN LANDE AUTOMOBILE POWER SUPPLY TECHCO
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Patent Information

Application Number
CN202510760657.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-09
Publication Date
2025-09-05

AI Technical Summary

Technical Problem

Existing liquid coolers fail to dynamically adjust according to actual changes in batteries and environmental influences, resulting in overcooling or insufficient cooling, reducing the energy-saving effect of the energy storage battery system.

Method used

By obtaining battery system and environmental parameters, calculating the impact value and dynamically adjusting the liquid cooler power, precise energy-saving control is performed by combining the battery system impact value and the environmental impact value, achieving multi-factor coordinated optimization and taking into account both safety and energy saving.

Benefits of technology

It achieves efficient energy saving and safe operation of the liquid cooler in complex scenarios, avoids overcooling or insufficient cooling, and improves the control accuracy and reliability of the system.

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Abstract

The invention relates to the technical field of energy saving, and discloses a liquid cooling machine energy-saving control method for an energy storage battery system, which comprises the following steps: acquiring a battery system parameter set, an environmental parameter set and a standard parameter set, preprocessing the numbered battery system parameter set and environmental parameter set, and setting a standard parameter set; comparing the battery system parameter set with the standard parameter set, extracting a battery system abnormal value to calculate a battery system influence value, comparing the environment parameter set with the standard parameter set, extracting an environment abnormal value to calculate an environment influence value, and calculating a control adjustment value according to the battery system influence value and the environment influence value. The control adjustment value is combined to calculate the adjustment power of the liquid cooling machine, the adjustment instruction is sent out according to the adjustment power of the liquid cooling machine, the power of the liquid cooling machine is dynamically adjusted, accurate energy-saving control of data driving is achieved, the liquid cooling machine can adapt to complex scenes, and the dual purposes of high efficiency, energy saving and safe operation are achieved.
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Description

Technical Field

[0001] The present invention relates to the technical field of energy saving, and in particular to an energy-saving control method for a liquid cooler of an energy storage battery system. Background Art

[0002] Energy storage battery systems are comprehensive technical solutions for storing and releasing electrical energy through electrochemical devices. Their core consists of subsystems such as battery packs (such as lithium-ion, flow, or sodium-ion batteries), thermal management systems (such as liquid chillers), electrical control systems (PCS, BMS), and safety and protection systems (fire protection, containers). In scenarios such as grid peak regulation, new energy consumption, and emergency backup, they can smooth fluctuations in power supply and demand, storing electrical energy in the form of chemical energy and rapidly releasing it when needed. With advantages such as high energy density, flexible response, and long cycle life, they are a key supporting technology for achieving large-scale deployment of renewable energy and building new power systems.

[0003] Existing liquid coolers fail to fully consider the actual changes in batteries and the impact of the environment, and cannot be dynamically adjusted according to real-time conditions, resulting in over-cooling or insufficient cooling, reducing energy-saving effects. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides an energy-saving control method for a liquid cooler of an energy storage battery system. The method has the advantages of calculating a control adjustment value by combining the battery system impact value and the environmental impact value, and dynamically adjusting the liquid cooler power based on the value to achieve data-driven precise energy-saving control and realize multi-factor collaborative optimization. At the same time, during the adjustment process, it takes into account both safety and energy saving, so that the liquid cooler can adapt to complex scenarios and achieve the dual goals of efficient energy saving and safe operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for controlling energy saving of a liquid cooler of an energy storage battery system, comprising the following steps: Step 1: Obtain a battery system parameter set, an environmental parameter set, and a standard parameter set, and number the obtained battery system parameter set, environmental parameter set, and standard parameter set; Step 2: Preprocess the numbered battery system parameter set and environmental parameter set; Step 3: Compare the battery system parameter set with the standard parameter set, extract parameters in the battery system parameter set that exceed the standard parameter set, mark them as battery system abnormal values, and calculate the battery system impact value; Step 4: Compare the environmental parameter set with the standard parameter set, extract parameters in the environmental parameter set that exceed the standard parameter set, mark them as environmental anomalies, and calculate the environmental impact value; Step 5: Calculate the control adjustment value based on the battery system impact value and the environmental impact value, calculate the liquid cooler adjustment power based on the control adjustment value, and issue an adjustment instruction based on the liquid cooler adjustment power.

[0006] Preferably, in step 1, the battery system parameter set The number expression is: ; In the expression, Represents a set of battery system parameters, Represents the parameters of the first battery system in the battery system parameter set, Represents the first parameter in the battery system parameter set Parameters of the battery system, right subscript 1~ The number representing the corresponding quantity of battery system parameters is marked on the upper right corner. Represents the specific parameters of the battery system, including: charge and discharge rate, battery temperature, internal resistance, battery SOC, battery cycle number, battery operating time, battery voltage, battery current, and battery power.

[0007] Preferably, in step 1, the environmental parameter set The number expression is: ; In the expression, Represents a set of environmental parameters, Represents the ambient temperature in the environmental parameter set, Represents the ambient humidity in the environmental parameter set, Represents the air ventilation index in the environmental parameter set, Represents the dust concentration in the environmental parameter set, Represents the light intensity in the environment parameter set.

[0008] Preferably, in step 1, the standard parameter set includes standard battery system parameters and standard environmental parameters. The number expression is: Standard battery system parameters , standard environmental parameters .

[0009] Preferably, in step 2, the method of preprocessing the numbered data set is: Set the battery parameter tolerance range and environmental parameter tolerance range, compare the specific parameters in the obtained battery system parameter set and environmental parameter set with the battery parameter tolerance range and environmental parameter tolerance range, remove the parameter values ​​that exceed the tolerance range and the blank values, and replace them with historical average parameters.

[0010] Preferably, in step 3, the battery system impact value The calculation formula is: ; In the calculation formula, Represents abnormal value of battery system, Represents the abnormal value allowed in the battery system.

[0011] Preferably, in step 4, the environmental impact value The calculation formula is: ; In the calculation formula, represents environmental outliers, Represents the outliers allowed in the environment.

[0012] Preferably, in step 5, the control adjustment value The calculation formula is: ; In the calculation formula, Represents the weight of the battery system impact value, Represents the weight of the environmental impact value.

[0013] Preferably, in step 5, the liquid cooler adjusts the power The calculation formula is: ; In the calculation formula, Represents the base power of the liquid cooler, Represents the upper limit of the control adjustment value, When the power of the liquid cooler is adjusted, the smaller value between the control adjustment value and the upper limit of the control adjustment value is taken to limit the control adjustment value to not exceed the maximum value to prevent the liquid cooler from overloading.

[0014] Preferably, in step five, the adjustment instruction is issued to adjust the power of the liquid cooler according to The calculation results generate adjustment instructions to automatically adjust the power of the liquid cooler.

[0015] Compared with the prior art, the present invention provides an energy-saving control method for a liquid cooler of an energy storage battery system, which has the following beneficial effects: 1. The present invention preprocesses the numbered battery system parameter set and environmental parameter set, eliminates abnormal or missing values, and replaces invalid data with historical average values. This can effectively improve data quality and control accuracy, avoid incorrect adjustment of the liquid cooler due to erroneous data, fill in blank values ​​with historical average values, ensure parameter continuity, maintain stable control operation, limit parameters within the tolerance range, reduce control deviations caused by data fluctuations or sensor failures, reduce the impact of occasional interference on the system, and improve the reliability of energy-saving strategies.

[0016] 2. The present invention calculates the control adjustment value by combining the battery system impact value and the environmental impact value, and dynamically adjusts the liquid cooler power based on this to achieve data-driven precise energy-saving control, realize multi-factor collaborative optimization, and weighted integration of the battery abnormality degree and environmental deviation to ensure that the adjustment value reflects both the battery status and environmental changes, avoiding misjudgment caused by a single parameter. The liquid cooler baseline power is dynamically corrected according to the adjustment value, which can not only respond quickly in an abnormality, but also reduce energy consumption when the parameters are normal. At the same time, the upper limit of the adjustment value is limited to prevent the liquid cooler from overloading due to extreme abnormal values, taking into account safety and energy saving, so that the liquid cooler can adapt to complex scenarios and achieve the dual goals of efficient energy saving and safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a step diagram of the method of the present invention. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1 , a method for energy-saving control of a liquid cooler of an energy storage battery system, comprising the following steps: Step 1: Obtain a battery system parameter set, an environmental parameter set, and a standard parameter set, and number the obtained battery system parameter set, environmental parameter set, and standard parameter set; Battery system parameter set The number expression is: ; In the expression, Represents a set of battery system parameters, Represents the parameters of the first battery system in the battery system parameter set, Represents the first parameter in the battery system parameter set Parameters of the battery system, right subscript 1~ The number representing the corresponding quantity of battery system parameters is marked on the upper right corner. Represents the specific parameters of the battery system, including: charge and discharge rate, battery temperature, internal resistance, battery SOC, battery cycle number, battery operating time, battery voltage, battery current, and battery power; The battery system parameter set reflects the battery's operating status and health in real time, as well as the battery's load status. This provides a data basis for rationally adjusting the liquid cooler, enabling proactive control of the liquid cooler to avoid overcooling or delayed response. Environmental parameter collection The number expression is: ; In the expression, Represents a set of environmental parameters, Represents the ambient temperature in the environmental parameter set, Represents the ambient humidity in the environmental parameter set, Represents the air ventilation index in the environmental parameter set, Represents the dust concentration in the environmental parameter set, Represents the light intensity in the environmental parameter set; The environmental parameter set provides dynamic external environment perception for the liquid cooler's energy-saving control. By monitoring these parameters in real time, the liquid cooler can optimize its cooling strategy based on environmental changes. Dynamic adjustments based on environmental parameters can avoid energy waste caused by overcooling and prevent battery safety risks caused by sudden environmental changes. This significantly improves the energy efficiency and adaptability of the liquid cooler while ensuring battery performance. The standard parameter set includes standard battery system parameters and standard environmental parameters. The number expression is: Standard battery system parameters , standard environmental parameters ; The standard parameter set provides a benchmark reference and unified measurement scale for energy-saving control of liquid coolers, ensuring the optimal balance between cooling capacity and energy consumption under typical operating conditions. Step 2: Preprocess the numbered battery system parameter set and environmental parameter set; Set the battery parameter tolerance range and environmental parameter tolerance range, compare the specific parameters in the obtained battery system parameter set and environmental parameter set with the battery parameter tolerance range and environmental parameter tolerance range, remove the parameter values ​​that exceed the tolerance range and the blank values, and replace them with historical average parameters; By preprocessing the numbered battery system parameter sets and environmental parameter sets, removing abnormal or missing values ​​and replacing invalid data with historical averages, data quality and control accuracy can be effectively improved. This prevents incorrect adjustment of the liquid cooler due to erroneous data. By filling in blank values ​​with historical averages, parameter continuity is ensured, stable control operation is maintained, and parameters are limited to tolerances. This reduces control deviations caused by data fluctuations or sensor failures, mitigates the impact of occasional interference on the system, and improves the reliability of energy-saving strategies. Step 3: Compare the battery system parameter set with the standard parameter set, extract parameters in the battery system parameter set that exceed the standard parameter set, mark them as battery system abnormal values, and calculate the battery system impact value; Battery system impact value The calculation formula is: ; In the calculation formula, Represents abnormal value of battery system, Represents the abnormal value allowed in the battery system; By comparing battery parameters with standard values, identifying anomalies and calculating their impact, a quantitative basis for anomaly control is provided for liquid cooler energy-saving control, enabling the liquid cooler to be data-driven and achieve the dual goals of precise energy saving and safety assurance. Step 4: Compare the environmental parameter set with the standard parameter set, extract parameters in the environmental parameter set that exceed the standard parameter set, mark them as environmental anomalies, and calculate the environmental impact value; Environmental Impact Value The calculation formula is: ; In the calculation formula, represents environmental outliers, Represents the outliers allowed in the environment; By comparing environmental parameters with standard values, identifying anomalies and calculating environmental impact values, this provides an environmental adaptability optimization basis for liquid cooler energy-saving control, enabling the liquid cooler to achieve precise adjustment and high energy efficiency based on environmental dynamics. Step 5: Calculate the control adjustment value based on the battery system impact value and the environmental impact value, calculate the liquid cooler adjustment power based on the control adjustment value, and generate an adjustment instruction based on the calculation result of the liquid cooler adjustment power to automatically adjust the liquid cooler power; Control adjustment value The calculation formula is: ; In the calculation formula, Represents the weight of the battery system impact value, The weight representing the environmental impact value; Liquid cooler adjustment power The calculation formula is: ; In the calculation formula, Represents the base power of the liquid cooler, Represents the upper limit of the control adjustment value, When the liquid cooler is performing power adjustment, the smaller value between the control adjustment value and the upper limit of the control adjustment value is taken to limit the control adjustment value to not exceed the maximum value to prevent the liquid cooler from overloading; By combining the battery system impact value and the environmental impact value to calculate the control adjustment value, and dynamically adjusting the liquid cooler power based on this, data-driven precise energy-saving control is achieved, multi-factor collaborative optimization is realized, and the battery abnormality degree and environmental deviation are weighted and integrated to ensure that the adjustment value reflects both the battery status and environmental changes, avoiding misjudgment caused by a single parameter. The liquid cooler baseline power is dynamically corrected according to the adjustment value, which can not only respond quickly in abnormal situations, but also reduce energy consumption when the parameters are normal. At the same time, the upper limit of the adjustment value is limited to prevent the liquid cooler from overloading due to extreme abnormal values, taking into account both safety and energy saving, so that the liquid cooler can adapt to complex scenarios and achieve the dual goals of efficient energy saving and safe operation.

[0020] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for controlling energy saving of a liquid cooler of an energy storage battery system, characterized in that: The following steps are involved: Step 1: Obtain a battery system parameter set, an environmental parameter set, and a standard parameter set, and number the obtained battery system parameter set, environmental parameter set, and standard parameter set; Step 2: Preprocess the numbered battery system parameter set and environmental parameter set; Step 3: Compare the battery system parameter set with the standard parameter set, extract parameters in the battery system parameter set that exceed the standard parameter set, mark them as battery system abnormal values, and calculate the battery system impact value; Step 4: Compare the environmental parameter set with the standard parameter set, extract parameters in the environmental parameter set that exceed the standard parameter set, mark them as environmental anomalies, and calculate the environmental impact value; Step 5: Calculate the control adjustment value based on the battery system impact value and the environmental impact value, calculate the liquid cooler adjustment power based on the control adjustment value, and issue an adjustment instruction based on the liquid cooler adjustment power.

2. The energy-saving control method for a liquid cooler of an energy storage battery system according to claim 1, characterized in that: In step 1, the battery system parameter set The number expression is: ； In the expression, Represents a set of battery system parameters, Represents the parameters of the first battery system in the battery system parameter set, Represents the battery system parameter set Parameters of the battery system, right subscript 1~ The number representing the corresponding quantity of battery system parameters is marked on the upper right corner. Represents the specific parameters of the battery system, including: charge and discharge rate, battery temperature, internal resistance, battery SOC, battery cycle number, battery operating time, battery voltage, battery current, and battery power.

3. The energy-saving control method for a liquid cooler of an energy storage battery system according to claim 2, characterized in that: In step 1, the environmental parameter set The number expression is: ； In the expression, Represents a set of environmental parameters, Represents the ambient temperature in the environmental parameter set, Represents the ambient humidity in the environmental parameter set, Represents the air ventilation index in the environmental parameter set, Represents the dust concentration in the environmental parameter set, Represents the light intensity in the environment parameter set.

4. The energy-saving control method for a liquid cooler of an energy storage battery system according to claim 3, characterized in that: In step 1, the standard parameter set includes standard battery system parameters and standard environmental parameters. The number expression is: Standard battery system parameters , standard environmental parameters .

5. The energy-saving control method for a liquid cooler of an energy storage battery system according to claim 4, characterized in that: In the second step, the numbered data set is preprocessed as follows: Set the battery parameter tolerance range and environmental parameter tolerance range, compare the specific parameters in the obtained battery system parameter set and environmental parameter set with the battery parameter tolerance range and environmental parameter tolerance range, remove the parameter values ​​that exceed the tolerance range and the blank values, and replace them with historical average parameters.

6. The energy-saving control method for a liquid cooler of an energy storage battery system according to claim 5, characterized in that: In step 3, the battery system impact value The calculation formula is: ； In the calculation formula, Represents abnormal value of battery system, Represents the abnormal value allowed in the battery system.

7. The energy-saving control method for a liquid cooler of an energy storage battery system according to claim 6, characterized in that: In step 4, the environmental impact value The calculation formula is: ； In the calculation formula, represents environmental outliers, Represents the outliers allowed in the environment.

8. The energy-saving control method for a liquid cooler of an energy storage battery system according to claim 7, characterized in that: In step 5, the control adjustment value The calculation formula is: ； In the calculation formula, Represents the weight of the battery system impact value, Represents the weight of the environmental impact value.

9. The energy-saving control method for a liquid cooler of an energy storage battery system according to claim 8, characterized in that: In step 5, the liquid cooler adjusts the power The calculation formula is: ； In the calculation formula, Represents the base power of the liquid cooler, Represents the upper limit of the control adjustment value, When the power of the liquid cooler is adjusted, the smaller value between the control adjustment value and the upper limit of the control adjustment value is taken to limit the control adjustment value to not exceed the maximum value to prevent the liquid cooler from overloading.

10. The energy-saving control method for a liquid cooler of an energy storage battery system according to claim 9, characterized in that: In step 5, the adjustment instruction is issued to adjust the power of the liquid cooler The calculation results generate adjustment instructions to automatically adjust the power of the liquid cooler.