WO2020211487A1 - 储能设备温度控制方法和装置 - Google Patents

储能设备温度控制方法和装置 Download PDF

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Publication number
WO2020211487A1
WO2020211487A1 PCT/CN2020/071428 CN2020071428W WO2020211487A1 WO 2020211487 A1 WO2020211487 A1 WO 2020211487A1 CN 2020071428 W CN2020071428 W CN 2020071428W WO 2020211487 A1 WO2020211487 A1 WO 2020211487A1
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WO
WIPO (PCT)
Prior art keywords
temperature
power generation
battery
target temperature
threshold
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PCT/CN2020/071428
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English (en)
French (fr)
Inventor
杨江辉
陈君
李泉明
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华为技术有限公司
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Publication of WO2020211487A1 publication Critical patent/WO2020211487A1/zh
Priority to US17/402,778 priority Critical patent/US20210384565A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/005—Circuits arrangements for indicating a predetermined temperature
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00—Systems controlled by a computer
    • G05B15/02—Systems controlled by a computer electric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • H01M10/465—Accumulators structurally combined with charging apparatus with solar battery as charging system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • H02S10/20—Systems characterised by their energy storage means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/38—Energy storage means, e.g. batteries, structurally associated with PV modules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Definitions

  • This application relates to the field of temperature control, in particular to a temperature control method and device for energy storage equipment.
  • the photovoltaic power generation system mainly includes photovoltaic arrays, energy storage devices, energy conversion devices and loads.
  • the photovoltaic array uses sunlight to generate electricity, and the generated electrical energy is transmitted to the load through an energy conversion device or stored in an energy storage device; at night, the photovoltaic array cannot generate electricity, and the energy storage device outputs electrical energy for the load.
  • the power generation of the photovoltaic power generation system exceeds the power demand of the load and the energy storage device, that is, there is idle power generation, the power generation of the photovoltaic array will be limited, that is, the phenomenon of abandonment of light will occur.
  • the battery in the energy storage device is generally a lead-acid battery or a lithium battery, and high temperature will affect its service life.
  • refrigeration equipment is often used to control the battery temperature.
  • the battery temperature is monitored. If the battery temperature exceeds a preset temperature threshold, the refrigeration device is turned on, and if the battery temperature is less than the temperature threshold, the refrigeration device is turned off.
  • the refrigeration equipment when the battery temperature in the energy storage device is greater than a preset temperature threshold, the refrigeration equipment is turned on, and when the temperature is less than the temperature threshold, the refrigeration equipment is turned off. If there is no idle power generation in the photovoltaic power generation system when the refrigeration equipment is turned on, more power will be consumed. If there is idle power generation in the photovoltaic power generation system when the refrigeration equipment is turned off, all of it will be discarded, resulting in a waste of power.
  • the embodiment of the present application provides a temperature control method for an energy storage device, which is used to reduce electric energy waste.
  • the first aspect of the embodiments of the present application provides a temperature control method for an energy storage device, including: obtaining the idle power generation of a photovoltaic power generation system and the battery temperature of the energy storage device.
  • the photovoltaic power generation system includes a photovoltaic array, the energy storage device, and a load.
  • the energy storage device includes a cooling device and a battery, and the idle power generation is the difference between the power generation of the photovoltaic array and the power consumption of the energy storage device and the load; the cooling is determined according to the idle power generation and the battery temperature The cooling temperature of the device.
  • the cooling device is used to control the temperature of the battery.
  • the photovoltaic power generation system includes a photovoltaic array, the energy storage device and a load, and the energy storage device includes a refrigeration device and a battery.
  • the photovoltaic array can produce electricity
  • the load consumes electricity
  • the energy storage device can store electricity.
  • the photovoltaic power generation system has idle electricity generation, which is generally discarded and wasted.
  • the battery needs to work in a suitable temperature range. When the temperature is too high, the battery life will be reduced, so it is necessary to use refrigeration equipment to cool the battery.
  • the idle power generation of the photovoltaic power generation system and the battery temperature of the energy storage device are first obtained, and then the refrigeration temperature of the refrigeration equipment is comprehensively determined according to the idle power generation of the photovoltaic power generation system and the battery temperature of the energy storage device , Compared with determining whether to refrigerate only based on the battery temperature, the electric energy can be used more fully.
  • the cooling temperature of the refrigeration device is determined according to the idle power generation and the battery temperature: if the idle power generation is greater than zero, the cooling temperature is determined to be the first target temperature, Alternatively, the cooling temperature is determined as the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation; if the idle power generation is less than or equal to zero, the cooling temperature is determined to be the second target temperature according to the battery temperature Temperature or turn off the refrigeration equipment, the second target temperature is greater than the first target temperature.
  • a lower cooling temperature is set, which can make full use of idle electric energy and reduce electric energy waste.
  • the determining that the cooling temperature is the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation includes: determining that the cooling temperature is the first target temperature according to the idle power generation The first target temperature, the idle power generation is negatively correlated with the first target temperature; or, the cooling temperature is determined to be the first target temperature according to the battery temperature, and the battery temperature is negatively correlated with the first target temperature; or, according to The battery temperature and the idle power generation determine that the cooling temperature is the first target temperature, the idle power generation is negatively correlated with the first target temperature, and the battery temperature is negatively correlated with the first target temperature.
  • the temperature control method for an energy storage device provides three specific methods for determining that the cooling temperature is the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation when there is idle power generation. Improve the diversity of the program. Because the higher the idle power generation, the lower the cooling temperature, which can reduce power waste; the higher the battery temperature, the lower the cooling temperature, and the idle power can be used to quickly reduce the battery temperature and reduce power waste.
  • the determining that the cooling temperature is the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation includes: if the idle power generation is greater than zero and less than a preset Determine the cooling temperature as the third target temperature, the first threshold is greater than zero, the third target temperature is less than the second target temperature; if the idle power generation is greater than or equal to the first threshold, then determine The cooling temperature is a fourth target temperature, and the fourth target temperature is less than the third target temperature.
  • the cooling temperature is low, and the idle electric energy can be fully utilized.
  • the determining that the cooling temperature is the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation includes: if the battery temperature is greater than or equal to a preset first target temperature If a high temperature threshold is less than the preset second high temperature threshold, it is determined that the cooling temperature is the fifth target temperature, and the second high temperature threshold is greater than the first high temperature threshold; if the battery temperature is greater than the second high temperature threshold, then it is determined The cooling temperature is a sixth target temperature, and the sixth target temperature is less than the fifth target temperature.
  • the cooling temperature is lower, and the idle electric energy can be used to quickly reduce the battery temperature and prolong the battery life.
  • the determining that the cooling temperature is the second target temperature or turning off the cooling device according to the battery temperature includes: if the battery temperature is greater than or equal to a preset high temperature threshold, determining the cooling The temperature is the second target temperature; if the battery temperature is less than the high temperature threshold, the refrigeration device is turned off.
  • the refrigeration device when there is no idle power generation and the battery temperature is not greater than the high temperature threshold, the refrigeration device is turned off to reduce power consumption.
  • the cooling temperature is the second The target temperature is higher than the first target temperature of the refrigeration temperature when there is idle power generation, which can reduce power consumption.
  • the determining that the cooling temperature is the second target temperature includes: determining the cooling temperature as the second target temperature according to the battery temperature, and the second target temperature is positively correlated with the battery temperature .
  • the higher the battery temperature when the battery temperature is greater than or equal to the preset high temperature threshold and there is no idle power generation, the higher the battery temperature, the higher the cooling temperature, which can reduce power consumption.
  • the determining that the cooling temperature is the second target temperature includes: if the battery temperature is greater than or equal to a preset third high temperature threshold and less than a preset fourth high temperature threshold , The cooling temperature is determined to be the seventh target temperature, the fourth high temperature threshold is greater than the third high temperature threshold, and the seventh target temperature is greater than the first target temperature; if the battery temperature is greater than or equal to the fourth high temperature threshold, then determine The cooling temperature is an eighth target temperature, and the eighth target temperature is greater than the seventh target temperature.
  • the temperature control method of the energy storage device when the battery temperature is greater than or equal to the preset high temperature threshold and there is no idle power generation, when the battery temperature belongs to a larger temperature range, the cooling temperature is higher, which can reduce electric energy Consumption.
  • the method further includes: if the battery temperature is less than or equal to a preset low temperature threshold, turning off the refrigeration equipment, where the low temperature threshold is less than the first high temperature threshold and the third high temperature threshold. Any one of the threshold value and the high temperature threshold value.
  • the refrigeration device is turned off when the battery temperature is less than the preset low temperature threshold, which can reduce the power consumption and increase the completeness of the solution.
  • the obtaining the idle power generation of the photovoltaic power generation system includes: obtaining photovoltaic power generation and power consumption, and the power consumption includes the power consumption of the load and the charging power of the battery ; Determine the idle power generation according to the difference between the photovoltaic power generation and the power consumption.
  • the temperature control method of the energy storage device provided in the embodiment of the present application provides a specific implementation method for obtaining the idle power generation of the photovoltaic power generation system, and enhances the feasibility of the solution.
  • a second aspect of the embodiments of the present application provides a temperature control device for energy storage equipment, including: an acquisition unit for acquiring the idle power generation of the photovoltaic power generation system and the battery temperature of the energy storage device.
  • the photovoltaic power generation system includes a photovoltaic array, the An energy storage device and a load.
  • the energy storage device includes a refrigeration device and a battery.
  • the idle power generation is the difference between the power generation of the photovoltaic array and the power consumption of the energy storage device and the load;
  • the idle power generation and the battery temperature determine the cooling temperature of the refrigeration equipment, and the refrigeration equipment is used to control the temperature of the battery.
  • the determining unit is specifically configured to: if the idle power generation is greater than zero, determine that the cooling temperature is the first target temperature, or, according to the battery temperature and the battery temperature of the energy storage device / Or the idle power generation determines that the cooling temperature is the first target temperature; if the idle power generation is less than or equal to zero, the cooling temperature is determined to be the second target temperature according to the battery temperature or the refrigeration equipment is turned off, the second target temperature Greater than the first target temperature.
  • the determining unit is specifically configured to: determine that the cooling temperature is the first target temperature according to the idle power generation amount, and the idle power generation amount is negatively correlated with the first target temperature; or , Determine the cooling temperature as the first target temperature according to the battery temperature, and the battery temperature is negatively correlated with the first target temperature; or, determine the cooling temperature as the first target temperature according to the battery temperature and the idle power generation, The idle power generation amount is negatively correlated with the first target temperature, and the battery temperature is negatively correlated with the first target temperature.
  • the determining unit is specifically configured to: if the idle power generation is greater than zero and less than a preset first threshold, determine that the cooling temperature is the third target temperature, and the first If the threshold is greater than zero, the third target temperature is less than the second target temperature; if the idle power generation is greater than or equal to the first threshold, it is determined that the cooling temperature is the fourth target temperature, and the fourth target temperature is less than the third target temperature.
  • the determining unit is specifically configured to: if the battery temperature is greater than or equal to a preset first high temperature threshold and less than a preset second high temperature threshold, determine the cooling temperature Is the fifth target temperature, and the second high temperature threshold is greater than the first high temperature threshold; if the battery temperature is greater than the second high temperature threshold, it is determined that the cooling temperature is the sixth target temperature, and the sixth target temperature is less than the fifth target temperature.
  • the determining unit is specifically configured to: if the battery temperature is greater than or equal to a preset high temperature threshold, determine that the cooling temperature is the second target temperature; if the battery temperature is less than the The high temperature threshold turns off the refrigeration equipment.
  • the determining unit is specifically configured to determine the cooling temperature as the second target temperature according to the battery temperature, and the second target temperature is positively correlated with the battery temperature.
  • the determining unit is specifically configured to determine the cooling temperature if the battery temperature is greater than or equal to a preset third high temperature threshold and less than a preset fourth high temperature threshold Is the seventh target temperature, the fourth high temperature threshold is greater than the third high temperature threshold, and the seventh target temperature is greater than the first target temperature; if the battery temperature is greater than or equal to the fourth high temperature threshold, it is determined that the cooling temperature is eighth The target temperature, the eighth target temperature is greater than the seventh target temperature.
  • the device further includes: a shutdown unit, if the battery temperature is less than or equal to a preset low temperature threshold, shut down the refrigeration equipment, the low temperature threshold is less than the first high temperature threshold, the Any one of the third high temperature threshold and the high temperature threshold.
  • the obtaining unit is specifically configured to obtain photovoltaic power generation and power consumption, where the power consumption includes the power consumption of the load and the charging power of the battery; the determining unit It is also used to determine the idle power generation according to the difference between the photovoltaic power generation and the power consumption.
  • a third aspect of the embodiments of the present application provides a temperature control device for an energy storage device, including: a processor and an input-output device; the input-output device is used to transmit data; the processor is used to execute the first aspect and its implementations Method in.
  • the fourth aspect of the embodiments of the present application provides a computer program product.
  • the computer program product includes instructions that, when the instructions run on a computer, cause the computer to execute the methods in the first aspect and its implementations.
  • the fifth aspect of the embodiments of the present application provides a computer-readable storage medium that stores instructions.
  • the instructions When the instructions are run on a computer, the first aspect of the foregoing embodiments of the present application and various implementation modes thereof are executed Methods.
  • a sixth aspect of the embodiments of the present application provides a photovoltaic power generation system, including the temperature control device for an energy storage device of the foregoing second aspect.
  • the energy storage device can comprehensively determine the cooling temperature based on the battery temperature and the idle power generation. Compared with determining whether to cool based on the battery temperature, the energy storage device can make full use of electric energy.
  • Figure 1 is a schematic diagram of the microgrid architecture
  • FIG. 2 is a schematic diagram of an embodiment of a temperature control method for an energy storage device in an embodiment of the application
  • FIG. 3 is a schematic diagram of another embodiment of a temperature control method for an energy storage device in an embodiment of the application
  • FIG. 4 is a schematic diagram of another embodiment of a temperature control method for an energy storage device in an embodiment of the application.
  • FIG. 5 is a schematic diagram of another embodiment of a temperature control method for an energy storage device in an embodiment of the application.
  • FIG. 6 is a schematic diagram of another embodiment of a temperature control method for an energy storage device in an embodiment of the application.
  • FIG. 7 is a schematic diagram of another embodiment of a temperature control method for an energy storage device in an embodiment of the application.
  • FIG. 8 is a schematic diagram of another embodiment of a temperature control method for an energy storage device in an embodiment of the application.
  • FIG. 9 is a schematic diagram of an embodiment of a temperature control device for energy storage equipment in an embodiment of the application.
  • FIG. 10 is a schematic diagram of another embodiment of a temperature control device for an energy storage device in an embodiment of the application.
  • the embodiment of the present application provides a temperature control method for an energy storage device, which is used to determine the cooling temperature according to the amount of idle power generation, which can make full use of electric energy.
  • the photovoltaic power generation system mainly includes photovoltaic arrays, energy storage devices, energy conversion devices and loads.
  • the photovoltaic array uses sunlight to generate electricity, and the generated electrical energy is transmitted to the load through an energy conversion device or stored in an energy storage device; at night, the photovoltaic array cannot generate electricity, and the energy storage device outputs electrical energy for the load.
  • the power generation of the photovoltaic power generation system exceeds the power demand of the load and the energy storage device, that is, there is idle power generation, the power generation of the photovoltaic array will be limited, that is, the phenomenon of abandonment of light will occur.
  • the energy storage device includes refrigeration equipment and one or more battery modules.
  • the battery modules generally include lead-acid batteries or lithium batteries, and their battery life decreases with increasing temperature. In order to prolong the service life of the battery, an air conditioner is often used to control the temperature of the battery storage cabinet.
  • the temperature control method for energy storage equipment provided in the embodiments of the present application is applied to photovoltaic power generation systems, including various scenarios that include photovoltaic power generation devices, and the embodiments of the present application do not limit the application scenarios.
  • the following takes the microgrid as an example to introduce.
  • Figure 1 is a schematic diagram of the microgrid architecture.
  • Microgrid is a small power distribution system consisting of distributed power sources, energy storage devices, energy conversion devices and loads, as well as monitoring, protection devices and central control units not shown in the figure. It is mainly used in remote villages, islands, etc. Other areas without power grids.
  • distributed power sources can be photovoltaic arrays and diesel generators, for example. Since the power generation cost of photovoltaic arrays is lower than that of diesel generators, the actual application of microgrid usually uses photovoltaic array power generation as the main power, and diesel generator power generation as a supplement. .
  • the electric energy generated by the distributed power source is transmitted to the load by the energy conversion device, ie, the microgrid inverter, or stored in the energy storage device.
  • the load can be power-consuming equipment in areas such as houses, shops, hospitals, or schools.
  • the energy storage device can be various forms of battery energy storage cabinets, such as board houses or containers.
  • the battery storage cabinet contains one or more batteries and refrigeration equipment.
  • the refrigeration equipment can be an air conditioner or a semiconductor cooler (thermoelectric cooler, TEC) and other equipment with cooling capacity, which is used to control the temperature of the battery storage cabinet at a suitable level. Range to extend battery life.
  • FIG. 2 is a schematic diagram of an embodiment of a temperature control method for an energy storage device in an embodiment of the application.
  • the electrical energy generated by the photovoltaic power generation system needs to be stored in an energy storage device, which contains one or more batteries, and the battery temperature can be collected through a temperature sensor.
  • Photovoltaic arrays convert solar energy into electrical energy, which is used by the load on the one hand and stored in an energy storage device on the other.
  • Idle power generation refers to the current idle power generation capacity of the photovoltaic power generation system. Idle power generation can be calculated by the difference between the photovoltaic array power generation and the system power consumption. Among them, the power consumption of the system includes the power consumption of the load and the power consumption of the energy storage device, and the power consumption of the energy storage device includes the battery charge and the power consumption of the air conditioner.
  • the idle power generation is the difference between the power generation of the photovoltaic array and the power consumption of the energy storage device and the load. To obtain the idle power generation of the photovoltaic power generation system, it is necessary to obtain the power generation of the photovoltaic array, the power consumption of the load, and the power consumption of the energy storage equipment.
  • the power generation of the photovoltaic array can be estimated based on the light intensity, or the power generation can be measured based on the electricity meter, which is not limited here.
  • idle power generation can be measured by idle power generation. Specifically, the power generation power of the photovoltaic array, the power consumption of the load and the power consumption of the energy storage device are obtained, and the power generation of the photovoltaic array is used to subtract the power consumption of the load and the power storage. The power consumption of energy equipment can obtain idle power generation.
  • the photovoltaic power generation system can periodically obtain battery temperature and idle power generation according to a preset time period.
  • the cooling temperature of the refrigeration equipment in the energy storage device can be determined by combining the battery temperature and the idle power generation.
  • the cooling temperature can be positively correlated with the battery temperature.
  • the idle power generation is greater than zero, the conditions for starting the refrigeration equipment can be reduced, or a lower refrigeration temperature can be determined, thereby reducing the waste of electrical energy.
  • the cooling temperature is determined to be the preset target temperature, and if the idle power generation is less than or equal to zero, the refrigeration equipment is turned off.
  • the cooling temperature is determined to be the preset first target temperature; if the idle power generation is no idle, the cooling temperature is determined to be the preset A second target temperature, the second target temperature being greater than the first target temperature.
  • the temperature control method of the energy storage device not only considers the battery temperature when determining the cooling temperature, but also determines the cooling temperature based on the current idle power generation. Compared with only determining whether to cool based on the battery temperature, the electric energy can be more fully utilized .
  • FIG. 3 is a schematic diagram of another embodiment of a temperature control method for an energy storage device in an embodiment of the application.
  • the electrical energy generated by the photovoltaic array needs to be stored in the battery of the energy storage device, and the battery needs to work in a suitable temperature range to extend its service life.
  • the battery temperature can be collected by a temperature sensor.
  • the operating temperature of the battery may be 10 degrees Celsius (°C) to 30°C.
  • the battery temperature is greater than 30°C, the battery life will decrease as the temperature rises.
  • Idle power generation refers to the current idle power generation capacity of the photovoltaic power generation system, which can be calculated by the difference between the power generation of the photovoltaic array and the power consumption of the system.
  • the power consumption of the system includes the power consumption of the load and the power consumption of the energy storage device
  • the power consumption of the energy storage device includes the battery charge and the power consumption of the air conditioner.
  • the idle power generation is the difference between the power generation of the photovoltaic array and the power consumption of the energy storage device and the load. To obtain the idle power generation of the photovoltaic power generation system, it is necessary to obtain the power generation of the photovoltaic array, the power consumption of the load, and the power consumption of the energy storage equipment.
  • the power generation of the photovoltaic array can be estimated based on the light intensity, or the power generation can be measured based on the electricity meter, which is not limited here.
  • the idle power generation of the photovoltaic power generation system can be measured by the idle power generation.
  • the power consumption includes load power consumption and energy storage equipment charging power.
  • the idle power generation of the photovoltaic power generation system can be obtained by subtracting the power consumption from the photovoltaic power generation power.
  • the photovoltaic power generation system can periodically obtain battery temperature and idle power generation according to a preset time period.
  • the low temperature threshold for battery operation can be preset, and the specific value of the low temperature threshold is not limited in this embodiment.
  • the low temperature threshold is an empirical value determined according to the characteristics of the battery in the energy storage device in practical applications, and is not specifically limited here.
  • the high temperature threshold, the first high temperature threshold, the second high temperature threshold, the third high temperature threshold, and the fourth high temperature threshold will also appear, all of which are empirical values determined according to battery characteristics. "First”, “Second”, “Third” and “Fourth” are only used to distinguish different temperature thresholds.
  • the low temperature threshold may be set in the range of 5°C to 10°C, which is exemplary. If the acquired battery temperature is 3°C, it is determined that the battery temperature is less than the low temperature threshold; if the battery temperature is 25°C, it is determined that the battery temperature is greater than the low temperature threshold.
  • step 302 is an optional step, which may or may not be performed, and it is not limited here.
  • step 302 If it is determined in step 302 that the battery temperature is greater than the preset low temperature threshold, then it is determined whether the idle power generation is greater than zero.
  • the idle power generation can be calculated according to the need to obtain the power generation of the photovoltaic array, the load power consumption and the power consumption of the energy storage equipment.
  • the idle power generation of the photovoltaic power generation system can be measured by the idle power generation. Obtain photovoltaic power generation and power consumption.
  • the power consumption includes load power consumption and energy storage equipment charging power.
  • the idle power generation of the photovoltaic power generation system can be obtained by subtracting the power consumption from the photovoltaic power. If the photovoltaic power generation power is greater than the power consumption, the idle power generation is greater than zero. At this time, because the power generated by the photovoltaic power generation device is surplus, the phenomenon of light abandonment will occur, resulting in waste of power. If the photovoltaic power generation is equal to the power consumption, it is determined that the idle power generation is equal to zero.
  • the load and the energy storage device may reduce the power consumption, or the energy storage device may lose power. At this time, it can be considered as idle power generation The amount is less than zero.
  • the current photovoltaic power generation power is 60 kilowatts (KW)
  • the load power consumption is 10KW
  • the energy storage device charging power is 30KW
  • the idle generation power is 20KW
  • the current idle generation power is 60KW
  • the load consumption The electric power is 30KW
  • the charging power of the energy storage device is 30KW
  • the idle power generation is 0 at this time.
  • the battery temperature is greater than the low temperature threshold and the idle power generation is greater than zero, determine that the cooling temperature is the first target temperature, or determine that the cooling temperature is the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation A target temperature;
  • the refrigeration equipment in the energy storage device can control the temperature, for example, reducing the air temperature inside the battery storage cabinet through an air conditioner, and controlling the battery temperature by controlling the temperature of the environment where the battery is located.
  • the first target temperature is an empirical value determined according to the characteristics of the battery in the energy storage device in practical applications, and is not specifically limited here.
  • the second target temperature, the third target temperature, the fourth target temperature, the fifth target temperature, the sixth target temperature, the seventh target temperature and the eighth target temperature will also appear in the following embodiments, which are all based on Empirical value determined by battery characteristics.
  • first target temperature, second target temperature, third target temperature, fourth target temperature, fifth target temperature, sixth target temperature, seventh target temperature, and eighth target temperature should be suitable for the battery range of working temperature.
  • step 303 If it is determined in step 303 that the idle power generation is greater than zero, it can be directly determined that the cooling temperature is the preset first target temperature. For example, 10°C.
  • the cooling temperature may be determined as the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation amount.
  • the refrigeration temperature is the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation, which will be respectively introduced below:
  • the cooling temperature is determined to be the first target temperature according to the idle power generation, and the idle power generation is negatively correlated with the first target temperature, that is, idle The greater the power generation, the smaller the first target temperature. It can be understood that the lower limit of the first target temperature should fall within the suitable operating temperature range of the battery;
  • the cooling temperature is determined to be the first target temperature according to the battery temperature, and the battery temperature is negatively correlated with the first target temperature, that is, the higher the battery temperature If it is higher, the first target temperature is lower.
  • the first target temperature should fall within a suitable operating temperature range of the battery.
  • the cooling temperature is determined to be the first target temperature according to the battery temperature and the idle power generation, and the idle power generation is negative than the first target temperature.
  • the battery temperature is negatively related to the first target temperature, and the specific algorithm for determining the first target temperature according to the idle power generation and the battery temperature is not limited here. It is understandable that the first target temperature should fall within a suitable operating temperature range of the battery.
  • FIG. 4 and FIG. 5 two specific implementation manners for determining the cooling temperature as the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation are respectively introduced.
  • the amount of idle power generation is greater than zero, it can be further determined whether the amount of idle power generation is less than a preset first threshold, which is a positive number, and the specific value is not limited here.
  • the cooling temperature is the third target temperature.
  • the first threshold is 10KW and the idle power generation is 8KW, it is determined that the cooling temperature, that is, the third target temperature is 20°C.
  • the cooling temperature is a fourth target temperature, and the fourth target temperature is less than the third target temperature.
  • the cooling temperature that is, the fourth target temperature, is 15°C.
  • the idle power generation is greater than zero, it can be further determined whether the battery temperature is less than the preset first high temperature threshold.
  • the value of the first high temperature threshold is not limited here, and may be 25°C, for example.
  • step 501 If it is determined in step 501 that the battery temperature is greater than or equal to the preset first high temperature threshold, then it is determined whether the battery temperature is less than the preset second high temperature threshold.
  • the value of the second high temperature threshold is not limited here, and may be 35°C, for example.
  • the cooling temperature is determined to be the fifth target temperature.
  • the value of the fifth target temperature is not limited here, and may be, for example, 20°C.
  • the first high temperature threshold is 25°C
  • the second high temperature threshold is 35°C
  • the battery temperature is 30°C
  • the battery temperature is greater than or equal to the second high temperature threshold, determine that the cooling temperature is a sixth target temperature, and the sixth target temperature is less than the fifth target temperature;
  • the cooling temperature is the sixth target temperature, and the sixth target temperature is less than the fifth target temperature.
  • the value of the sixth target temperature is not limited here, for example It can be 15°C.
  • the cooling temperature that is, the target sixth temperature
  • the battery temperature is less than the first high temperature threshold, perform other operations, such as turning off the refrigeration equipment, or increasing the frequency of acquiring the battery temperature, that is, strengthening the monitoring of the battery temperature.
  • the specific operation mode is not limited here.
  • the foregoing describes multiple possible implementations for determining the refrigeration temperature as the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation.
  • the specific implementation can be determined according to the actual situation during application, and this is not done here. limited.
  • step 303 If it is determined in step 303 that the idle power generation is less than or equal to zero, then it is determined that the cooling temperature is the second target temperature or the cooling device is turned off according to the battery temperature.
  • the second target temperature is greater than the first target temperature, and the specific value of the second target temperature is not limited here.
  • the cooling temperature is the second target temperature according to the battery temperature, which are described below:
  • the cooling temperature is determined to be the second target temperature according to the battery temperature, and the second target temperature is positively correlated with the battery temperature. Since the idle power generation is less than or equal to zero, that is, the photovoltaic power generation system has no idle power, when the battery temperature is greater than or equal to the preset high temperature threshold, the second target temperature is positively correlated with the battery temperature, which can reduce the power while controlling the battery temperature Consumption.
  • FIG. 6 and FIG. 7 two specific implementation manners for determining the cooling temperature as the second target temperature according to the battery temperature are respectively introduced.
  • FIG. 6 a schematic diagram of another embodiment of a temperature control method for an energy storage device, which introduces an embodiment of determining the cooling temperature as the second target temperature according to the battery temperature.
  • the battery temperature is less than the preset high temperature threshold.
  • the specific value of the high temperature threshold is not limited here. It can be understood that the high temperature threshold is greater than the preset low temperature threshold.
  • the cooling temperature is a second target temperature, and the second target temperature is greater than the first target temperature.
  • the high temperature threshold is 35°C
  • the first target temperature is 10°C
  • the second target temperature is 25°C. If the battery temperature is 40°C and greater than the high temperature threshold 35°C, the cooling temperature is determined to be the second target temperature 25°C.
  • the refrigeration equipment is turned off.
  • the high temperature threshold is 35°C
  • the first target temperature is 10°C
  • the second target temperature is 25°C. If the battery temperature is 28°C, turn off the refrigeration equipment. When the battery temperature is lower than the preset high temperature threshold, turning off the refrigeration equipment can save power consumption.
  • FIG. 7 is a schematic diagram of another embodiment of a temperature control method for an energy storage device, and introduces another embodiment of determining the cooling temperature as the second target temperature according to the battery temperature.
  • the specific value of the third high temperature threshold is not limited, and the third high temperature threshold may be 30°C, for example.
  • the battery temperature is greater than or equal to the third high temperature threshold, it is determined whether the battery temperature is less than the preset fourth high temperature threshold.
  • the specific value of the fourth high temperature threshold is not limited.
  • the fourth high temperature threshold may be, for example, 40°C.
  • the cooling temperature is determined to be the seventh target temperature, and the specific value of the seventh target temperature is not limited.
  • the third high temperature threshold is 30°C
  • the fourth high temperature threshold is 40°C
  • the seventh target temperature is 25°C. If the battery temperature is 36°C, greater than 30°C and less than 40°C, the cooling temperature, that is, the seventh target temperature, is determined to be 25°C.
  • the battery temperature is greater than or equal to the preset fourth high temperature threshold, determine that the cooling temperature is the eighth target temperature, and the eighth target temperature is greater than the seventh target temperature.
  • the cooling temperature is the eighth target temperature, and the eighth target temperature is greater than the seventh target temperature.
  • the specific value of the eighth target temperature is not limited.
  • the third high temperature threshold is 30°C
  • the fourth high temperature threshold is 40°C
  • the eighth target temperature is 33°C. If the battery temperature is 43°C and greater than 40°C, the cooling temperature, that is, the eighth target temperature, is determined to be 33°C.
  • the third high temperature threshold is 30°C, and if the battery temperature is 28°C, the refrigeration equipment is turned off to save power.
  • the foregoing describes multiple possible implementation manners for determining that the cooling temperature is the second target temperature according to the battery temperature, and the specific implementation manner can be determined according to actual conditions during application, which is not limited here.
  • step 302 If it is determined in step 302 that the battery temperature is less than or equal to the low temperature threshold, the refrigeration equipment is turned off. It is understandable that when the battery temperature is less than or equal to the low temperature threshold, the battery temperature is low, and cooling equipment is not required to cool down.
  • the preset low temperature threshold is 5°C, and if the battery temperature is 3°C, the refrigeration equipment is turned off.
  • the temperature control method of the energy storage device provided by the embodiment of the application can comprehensively determine the cooling temperature according to the battery temperature and the idle power generation.
  • a lower cooling temperature can be determined to fully utilize the electric energy and reduce waste.
  • solar power can increase the utilization rate of photovoltaic power generation devices.
  • FIG. 8 is a schematic diagram of another embodiment of the method for temperature control of an energy storage device in an embodiment of the present application:
  • the battery temperature is greater than or equal to the high temperature threshold, and the idle power generation is less than or equal to zero, determine that the cooling temperature is a second target temperature, and the second target temperature is greater than the first target temperature;
  • the battery temperature is greater than the low temperature threshold, or if the battery temperature is greater than the low temperature threshold, and the idle power generation is less than or equal to zero, and the battery temperature is less than the high temperature threshold, turn off the refrigeration equipment.
  • the preset low temperature threshold is 5°C
  • the high temperature threshold is 35°C
  • the preset first target temperature is 10°C
  • the second target temperature is 25°C.
  • Example 1 If the acquired battery temperature is 3°C, which is less than the preset low temperature threshold, turn off the refrigeration equipment;
  • Example 2 If the acquired battery temperature is 25°C and the idle power generation is greater than zero, since the battery temperature is greater than the low temperature threshold and the idle power generation is greater than zero, the cooling temperature is determined to be the first target temperature of 10°C.
  • Example 3 If the acquired battery temperature is 30°C and the idle power generation is zero, since the battery temperature is greater than the low temperature threshold but less than the high temperature threshold, and the idle power generation is zero, the refrigeration equipment is turned off.
  • Example 4 If the acquired battery temperature is 40°C and the idle power generation is zero, since the battery temperature is greater than the high temperature threshold and the idle power generation is zero, the smart temperature is determined to be the second target temperature of 25°C.
  • FIG. 9 is a schematic diagram of an embodiment of the temperature control device for the energy storage device in the embodiment of the application.
  • the temperature control device for the energy storage device may be an independent device or integrated into the central control unit of the photovoltaic power generation system, which is not specifically limited here.
  • the obtaining unit 901 is used to obtain the idle power generation amount of the photovoltaic power generation system and the battery temperature of the energy storage device.
  • the photovoltaic power generation system includes a photovoltaic array, the energy storage device and a load.
  • the energy storage device includes a refrigeration device and a battery. The quantity is the difference between the electricity production of the photovoltaic array and the electricity consumption of the energy storage device and the load;
  • the determining unit 902 is configured to determine the cooling temperature of the refrigeration equipment according to the idle power generation and the battery temperature, and the refrigeration equipment is used to control the temperature of the battery.
  • the determining unit 902 is specifically configured to:
  • the cooling temperature is determined to be the first target temperature, or the cooling temperature is determined to be the first target temperature according to the battery temperature of the energy storage device and/or the idle power generation; if the idle power generation If the power generation is less than or equal to zero, it is determined according to the battery temperature that the cooling temperature is the second target temperature or the cooling device is turned off, and the second target temperature is greater than the first target temperature.
  • the determining unit 902 is specifically configured to:
  • the cooling temperature is determined to be the first target temperature according to the idle power generation amount, and the idle power generation amount is negatively correlated with the first target temperature; or, the cooling temperature is determined to be the first target temperature based on the battery temperature, and the battery temperature is The first target temperature is negatively correlated; or, the refrigeration temperature is determined to be the first target temperature according to the battery temperature and the idle power generation amount, the idle power generation amount is negatively related to the first target temperature, and the battery temperature and the first target temperature A target temperature is negatively correlated.
  • the determining unit 902 is specifically configured to:
  • the cooling temperature is the third target temperature. If the first threshold is greater than zero, the third target temperature is less than the second target temperature; if the idle power generation is If the amount is greater than or equal to the first threshold, it is determined that the cooling temperature is a fourth target temperature, and the fourth target temperature is less than the third target temperature.
  • the determining unit 902 is specifically configured to:
  • the cooling temperature is the fifth target temperature, and the second high temperature threshold is greater than the first high temperature threshold; If the battery temperature is greater than the second high temperature threshold, it is determined that the cooling temperature is a sixth target temperature, and the sixth target temperature is less than the fifth target temperature.
  • the determining unit 902 is specifically configured to:
  • the cooling temperature is the second target temperature; if the battery temperature is less than the high temperature threshold, the cooling device is turned off.
  • the determining unit 902 is specifically configured to:
  • the cooling temperature is determined to be the second target temperature according to the battery temperature, and the second target temperature is positively correlated with the battery temperature.
  • the determining unit 902 is specifically configured to:
  • the cooling temperature is the seventh target temperature
  • the fourth high temperature threshold is greater than the third high temperature threshold
  • the first 7 The target temperature is greater than the first target temperature; if the battery temperature is greater than or equal to the fourth high temperature threshold, it is determined that the cooling temperature is the eighth target temperature, and the eighth target temperature is greater than the seventh target temperature.
  • the device also includes:
  • the shutdown unit 903 turns off the refrigeration equipment if the battery temperature is less than or equal to a preset low temperature threshold, and the low temperature threshold is less than any one of the first high temperature threshold, the third high temperature threshold, and the high temperature threshold.
  • the obtaining unit 901 is specifically used for:
  • the determining unit 902 is also configured to determine the power consumption according to the difference between the photovoltaic power generation and the power consumption Idle power generation.
  • FIG. 10 is a schematic diagram of another embodiment of an energy storage device temperature control device in an embodiment of the application.
  • the energy storage device temperature control device 1000 may have relatively large differences due to different configurations or performances, and may include one or more processors 1001 and a memory 1005, and the memory 1005 stores programs or data.
  • the memory 1005 may be volatile storage or non-volatile storage.
  • the processor 1001 may communicate with the memory 1005, and execute a series of instructions in the memory 1005 on the temperature control apparatus 1000 for energy storage equipment.
  • the temperature control apparatus 1000 for an energy storage device may further include one or more power supplies 1002; one or more wired or wireless network interfaces 1003; and one or more input and output interfaces 1004.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code .

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Abstract

一种储能设备温度控制方法，用于减少电能浪费。该方法包括：获取光伏发电系统的闲置发电量和储能装置的电池温度（201），所述光伏发电系统包括光伏阵列、所述储能装置和负载，所述储能装置包括制冷设备和电池，所述闲置发电量为所述光伏阵列的产电量与所述储能装置和所述负载的耗电量的差值；根据所述闲置发电量和所述电池温度确定所述制冷设备的制冷温度（202），所述制冷设备用于控制所述电池的温度。

Description

储能设备温度控制方法和装置
本申请要求于2019年4月15日提交中国专利局、申请号为201910299422.6、发明名称为“储能设备温度控制方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及温度控制领域，特别涉及一种储能设备温度控制方法和装置。
背景技术
光伏发电系统主要包含光伏阵列、储能装置、能量转化装置和负载。在白天，光伏阵列利用太阳光进行发电，产生的电能经能量转换装置输送给负载使用或存储在储能装置中；夜间光伏阵列无法发电，由储能装置输出电能供负载使用。当光伏发电系统的发电量超过负载和储能装置的需求电量即存在闲置发电量时，将限制光伏阵列的发电量即发生弃光现象。
储能装置中的电池一般为铅酸电池或锂电池，高温会影响其使用寿命。为延长电池的使用寿命，常使用制冷设备对电池温度进行控制。现有技术中，监测电池温度，若电池温度超过预设温度阈值则开启制冷设备，若电池温度小于该温度阈值则关闭制冷设备。
现有技术中，当储能装置中电池温度大于预设的温度阈值时，开启制冷设备，小于该温度阈值时，关闭制冷设备。若开启制冷设备时光伏发电系统不存在闲置发电量，将消耗较多电能，若关闭制冷设备时光伏发电系统存在闲置发电量，将全部丢弃，造成电能浪费。
发明内容
本申请实施例提供了一种储能设备温度控制方法，用于减少电能浪费。
本申请实施例第一方面提供了一种储能设备温度控制方法，包括：获取光伏发电系统的闲置发电量和储能装置的电池温度，该光伏发电系统包括光伏阵列、该储能装置和负载，该储能装置包括制冷设备和电池，该闲置发电量为该光伏阵列的产电量与该储能装置和该负载的耗电量的差值；根据该闲置发电量和该电池温度确定该制冷设备的制冷温度，该制冷设备用于控制该电池的温度。
光伏发电系统包括光伏阵列、该储能装置和负载，该储能装置包括制冷设备和电池。光伏发电系统中，光伏阵列可以产电，负载消耗电能，储能装置可以储存电能。当产电量大于消耗和储存的电量时，光伏发电系统存在闲置发电量，一般会丢弃浪费。电池需要工作在适宜的温度范围内，当温度过高时，电池寿命会降低，因此需要使用制冷设备为电池降温。本申请本实施例提供的方法中，先获取光伏发电系统的闲置发电量和储能装置的电池温度，然后根据光伏发电系统的闲置发电量和储能设备的电池温度综合确定制冷设备的制冷温度，相较仅根据电池温度决定是否制冷，可以更充分利用电能。
在第一方面的一种可能的实现方式中，该根据该闲置发电量和该电池温度确定该制冷设备的制冷温度：若该闲置发电量大于零，则确定该制冷温度为第一目标温度，或者，则根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为该第一目标温度；若该闲置发电量小于或等于零，则根据该电池温度确定该制冷温度为第二目标温度或关闭制冷设备，该第二目标温度大于该第一目标温度。
本申请实施例提供的储能设备温度控制方法，当闲置发电量大于零时，设置较低的制冷温度，可以充分利用闲置的电能，减少电能浪费。
在第一方面的一种可能的实现方式中，该根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为第一目标温度包括：根据该闲置发电量确定该制冷温度为该第一目标温度，该闲置发电量与该第一目标温度负相关；或者，根据该电池温度确定该制冷温度为该第一目标温度，该电池温度与该第一目标温度负相关；或者，根据该电池温度和该闲置发电量确定该制冷温度为该第一目标温度，该闲置发电量与该第一目标温度负相关，且该电池温度与该第一目标温度负相关。
本申请实施例提供的储能设备温度控制方法，提供了存在闲置发电量时，根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为第一目标温度的三种具体方式，提高了方案实现的多样性。由于闲置发电量越高，制冷温度越低，可以减少电能浪费；电池温度越高，制冷温度越低，可以利用闲置电能迅速降低电池温度，减少电能浪费。
在第一方面的一种可能的实现方式中，该根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为第一目标温度包括：若该闲置发电量大于零且小于预设的第一阈值，则确定该制冷温度为第三目标温度，该第一阈值大于零，该第三目标温度小于该第二目标温度；若该闲置发电量大于或等于该第一阈值，则确定该制冷温度为第四目标温度，该第四目标温度小于该第三目标温度。
本申请实施例提供的储能设备温度控制方法，当闲置发电量处于较高的区间时，制冷温度较低，可以充分利用闲置电能。
在第一方面的一种可能的实现方式中，该根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为第一目标温度包括：若该电池温度大于或等于预设的第一高温阈值，且小于预设的第二高温阈值，则确定该制冷温度为第五目标温度，该第二高温阈值大于该第一高温阈值；若该电池温度大于该第二高温阈值，则确定该制冷温度为第六目标温度，该第六目标温度小于该第五目标温度。
本申请实施例提供的储能设备温度控制方法，当电池温度处于较大的区间时，制冷温度较低，可以利用闲置电能迅速降低电池温度，延长电池寿命。
在第一方面的一种可能的实现方式中，该根据该电池温度确定该制冷温度为第二目标温度或关闭制冷设备包括：若该电池温度大于或等于预设的高温阈值，则确定该制冷温度为第二目标温度；若该电池温度小于该高温阈值，则关闭制冷设备。
本申请实施例提供的储能设备温度控制方法，当不存在闲置发电量，且电池温度不大于高温阈值时，关闭制冷设备以减少电能消耗，当电池温度大于高温阈值时，制冷温度为第二目标温度，较存在闲置发电量时的制冷温度第一目标温度高，可以减少电能消耗。
在第一方面的一种可能的实现方式中，该确定该制冷温度为第二目标温度包括：根据该电池温度确定制冷温度为该第二目标温度，该第二目标温度与该电池温度正相关。
本申请实施例提供的储能设备温度控制方法，当电池温度大于或等于预设的高温阈值且不存在闲置发电量时，电池温度越高，制冷温度越高，可以减少电能消耗。
在第一方面的一种可能的实现方式中，该确定该制冷温度为第二目标温度包括：若该电池温度大于或等于预设的第三高温阈值，且小于预设的第四高温阈值时，则确定制冷温度为 第七目标温度，该第四高温阈值大于该第三高温阈值，该第七目标温度大于该第一目标温度；若该电池温度大于或等于该第四高温阈值，则确定制冷温度为第八目标温度，该第八目标温度大于该第七目标温度。
本申请实施例提供的储能设备温度控制方法，当电池温度大于或等于预设的高温阈值且不存在闲置发电量时，电池温度属于较大的温度区间时，制冷温度较高，可以减少电能消耗。
在第一方面的一种可能的实现方式中，该方法还包括：若该电池温度小于或等于预设的低温阈值，则关闭制冷设备，该低温阈值小于该第一高温阈值、该第三高温阈值和该高温阈值中任一项。
本申请实施例提供的储能设备温度控制方法，当电池温度小于预设的低温阈值时关闭制冷设备，可以减少电能消耗，增加了方案实现的完整性。
在第一方面的一种可能的实现方式中，该获取光伏发电系统的闲置发电量包括：获取光伏发电功率和耗电功率，该耗电功率包括该负载的耗电功率和该电池的充电功率；根据该光伏发电功率与该耗电功率的差值确定该闲置发电量。
本申请实施例提供的储能设备温度控制方法，提供了获取光伏发电系统的闲置发电量的一种具体实现方式，增强了方案的可实现性。
本申请实施例第二方面提供了一种储能设备温度控制装置，包括：获取单元，用于获取光伏发电系统的闲置发电量和储能装置的电池温度，该光伏发电系统包括光伏阵列、该储能装置和负载，该储能装置包括制冷设备和电池，该闲置发电量为该光伏阵列的产电量与该储能装置和该负载的耗电量的差值；确定单元，用于根据该闲置发电量和该电池温度确定该制冷设备的制冷温度，该制冷设备用于控制该电池的温度。
在第二方面的一种可能的实现方式中，该确定单元具体用于：若该闲置发电量大于零，则确定该制冷温度为第一目标温度，或者，则根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为该第一目标温度；若该闲置发电量小于或等于零，则根据该电池温度确定该制冷温度为第二目标温度或关闭制冷设备，该第二目标温度大于该第一目标温度。
在第二方面的一种可能的实现方式中，该确定单元具体用于：根据该闲置发电量确定该制冷温度为该第一目标温度，该闲置发电量与该第一目标温度负相关；或者，根据该电池温度确定该制冷温度为该第一目标温度，该电池温度与该第一目标温度负相关；或者，根据该电池温度和该闲置发电量确定该制冷温度为该第一目标温度，该闲置发电量与该第一目标温度负相关，且该电池温度与该第一目标温度负相关。
在第二方面的一种可能的实现方式中，该确定单元具体用于：若该闲置发电量大于零且小于预设的第一阈值，则确定该制冷温度为第三目标温度，该第一阈值大于零，该第三目标温度小于该第二目标温度；若该闲置发电量大于或等于该第一阈值，则确定该制冷温度为第四目标温度，该第四目标温度小于该第三目标温度。
在第二方面的一种可能的实现方式中，该确定单元具体用于：若该电池温度大于或等于预设的第一高温阈值，且小于预设的第二高温阈值，则确定该制冷温度为第五目标温度，该第二高温阈值大于该第一高温阈值；若该电池温度大于该第二高温阈值，则确定该制冷温度为第六目标温度，该第六目标温度小于该第五目标温度。
在第二方面的一种可能的实现方式中，该确定单元具体用于：若该电池温度大于或等于 预设的高温阈值，则确定该制冷温度为第二目标温度；若该电池温度小于该高温阈值，则关闭制冷设备。
在第二方面的一种可能的实现方式中，该确定单元具体用于：根据该电池温度确定制冷温度为该第二目标温度，该第二目标温度与该电池温度正相关。
在第二方面的一种可能的实现方式中，该确定单元具体用于：若该电池温度大于或等于预设的第三高温阈值，且小于预设的第四高温阈值时，则确定制冷温度为第七目标温度，该第四高温阈值大于该第三高温阈值，该第七目标温度大于该第一目标温度；若该电池温度大于或等于该第四高温阈值，则确定制冷温度为第八目标温度，该第八目标温度大于该第七目标温度。
在第二方面的一种可能的实现方式中，该装置还包括：关闭单元，若该电池温度小于或等于预设的低温阈值，则关闭制冷设备，该低温阈值小于该第一高温阈值、该第三高温阈值和该高温阈值中任一项。
在第二方面的一种可能的实现方式中，该获取单元具体用于：获取光伏发电功率和耗电功率，该耗电功率包括该负载的耗电功率和该电池的充电功率；该确定单元还用于，根据该光伏发电功率与该耗电功率的差值确定该闲置发电量。
本申请实施例第三方面提供了一种储能设备温度控制装置，包括：处理器和输入输出设备；该输入输出设备用于传输数据；该处理器用于执行上述第一方面及其各实现方式中的方法。
本申请实施例第四方面提供了一种计算机程序产品，该计算机程序产品包括指令，当该指令在计算机上运行时，使得该计算机执行上述第一方面及其各实现方式中的方法。
本申请实施例第五方面提供了一种计算机可读储存介质，该计算机可读存储介质存储指令，当该指令在计算机上运行时，执行前述本申请实施例第一方面及其各实现方式中的方法。
本申请实施例第六方面提供了一种光伏发电系统，包括前述第二方面的储能设备温度控制装置。
从以上技术方案可以看出，本申请实施例具有以下优点：
本申请实施例提供的方案中，储能设备可以根据电池温度和闲置发电量综合确定制冷温度，相较仅根据电池温度决定是否制冷，可以更充分利用电能。
附图说明
图1为微电网的架构示意图；
图2为本申请实施例中储能设备温度控制方法的一个实施例示意图；
图3为本申请实施例中储能设备温度控制方法的另一个实施例示意图；
图4为本申请实施例中储能设备温度控制方法的另一个实施例示意图；
图5为本申请实施例中储能设备温度控制方法的另一个实施例示意图；
图6为本申请实施例中储能设备温度控制方法的另一个实施例示意图；
图7为本申请实施例中储能设备温度控制方法的另一个实施例示意图；
图8为本申请实施例中储能设备温度控制方法的另一个实施例示意图；
图9为本申请实施例中储能设备温度控制装置的一个实施例示意图；
图10为本申请实施例中储能设备温度控制装置的另一个实施例示意图。
具体实施方式
本申请实施例提供了储能设备温度控制方法，用于根据闲置发电量确定制冷温度，可以更充分利用电能。
光伏发电系统主要包含光伏阵列、储能装置、能量转化装置和负载。在白天，光伏阵列利用太阳光进行发电，产生的电能经能量转换装置输送给负载使用或存储在储能装置中；夜间光伏阵列无法发电，由储能装置输出电能供负载使用。当光伏发电系统的发电量超过负载和储能装置的需求电量即存在闲置发电量时，将限制光伏阵列的发电量即发生弃光现象。储能装置包含制冷设备以及一个或多个电池模块，电池模块一般包括铅酸电池或锂电池，其电池寿命随温度升高而降低。为延长电池的使用寿命，常使用空调对电池储能柜进行温度控制。
本申请实施例提供的储能设备温度控制方法，应用于光伏发电系统置，包括各类包含光伏发电装置的场景，本申请实施例对于应用场景不做限定。下面以微电网为例进行介绍。
请参阅图1，为微电网的架构示意图。
微电网是由分布式电源、储能装置、能量转换装置和负载，以及图中未示出的监控、保护装置和中央控制单元等组成的小型发配电系统，主要应用在边远村庄、海岛等其他无电网区域。其中，分布式电源例如可以是光伏阵列和柴油发电机，由于光伏阵列的发电成本低于柴油发电机的发电成本，因此微电网实际应用中通常以光伏阵列发电为主，柴油发电机发电为辅。分布式电源产生的电能经能量转换装置即微网逆变器输送给负载使用或存储在储能装置中。负载可以是住宅、商店、医院或学校等区域的耗电设备。储能装置可以是各种形式的电池储能柜，例如板房或集装箱等。电池储能柜包含一个或多个电池和制冷设备，制冷设备可以是空调或者半导体致冷器(thermo electric cooler，TEC)等具备制冷能力的设备，用于控制电池储能柜的温度处于适宜的范围，以延长电池的使用寿命。
基于图1所示的微电网架构，请参阅图2，为本申请实施例中储能设备温度控制方法的一个实施例示意图。
201、获取光伏发电系统的闲置发电量和储能装置的电池温度；
光伏发电系统产生的电能需储存在储能装置中，储能装置包含一个或多个电池，通过温度传感器可采集电池温度。
光伏阵列将太阳能转换为电能，一方面供负载使用，一方面储存在储能装置中。闲置发电量是指光伏发电系统当前闲置的产电能力。闲置发电量可通过光伏阵列产电量与系统耗电量的差值进行计算。其中，系统耗电量包括负载的耗电量和储能装置的耗电量，储能装置的耗电量包括电池充电量和空调耗电量。闲置发电量为该光伏阵列的产电量与该储能装置和该负载的耗电量的差值。获取光伏发电系统的闲置发电量，需获取光伏阵列的发电量、负载耗电量和储能设备耗电量。
可选地，光伏阵列的发电量可以根据光照强度进行预估，或根据电表对发电量进行度量，此处不做限定。
可选地，闲置发电量可以用闲置发电功率度量，具体地，获取光伏阵列的发电功率、负载耗电功率和储能设备耗电功率，用光伏阵列的发电功率减去负载耗电功率和储能设备耗电功率，即可获取闲置发电功率。
可选地，光伏发电系统可以根据预设的时长周期性获取电池温度和闲置发电量。
202、根据该闲置发电量和该电池温度确定该制冷设备的制冷温度；
获取当前的电池温度和闲置发电量后，可以综合电池温度和闲置发电量确定储能装置中制冷设备的制冷温度。
根据电池温度和闲置发电量综合确定制冷温度的方法有多种，此处不做限定。
可以理解的是，当闲置发电量小于或等于零时，为节省电能，制冷温度可以与电池温度正相关。当闲置发电量大于零时，可以降低启用制冷设备的条件，或确定更低的制冷温度，由此可以减少电能的浪费。
可选地，当电池温度处于预设的温度范围时，若闲置发电量大于零，则确定制冷温度为预设目标温度，若闲置发电量小于或等于零，则关闭制冷设备。
可选地，当电池温度处于预设的温度范围时，若闲置发电量大于零，则确定制冷温度为预设第一目标温度；若闲置发电量为无闲置，则确定制冷温度为预设的第二目标温度，该第二目标温度大于该第一目标温度。
本申请实施例提供的储能设备温度控制方法，在确定制冷温度时，不仅考虑电池温度，还根据当前的闲置发电量确定制冷温度，相较仅根据电池温度决定是否制冷，可以更充分利用电能。
基于图1所示的微电网架构，请参阅图3，为本申请实施例中储能设备温度控制方法的另一个实施例示意图。
301、获取光伏发电系统的闲置发电量和储能装置的电池温度；
光伏阵列产生的电能需储存在储能装置的电池中，电池需工作在适宜的温度范围以延长使用寿命。在储能装置中可以通过温度传感器采集电池温度。
示例性的，电池的工作温度可以是10摄氏度(℃)至30℃。当电池温度大于30℃时，电池的寿命将随着温度的升高而降低。
闲置发电量是指光伏发电系统当前闲置的产电能力，可通过光伏阵列产电量与系统耗电量的差值进行计算。其中，系统耗电量包括负载的耗电量和储能装置的耗电量，储能装置的耗电量包括电池充电量和空调耗电量。闲置发电量为该光伏阵列的产电量与该储能装置和该负载的耗电量的差值。获取光伏发电系统的闲置发电量，需获取光伏阵列的发电量、负载耗电量和储能设备耗电量。
可选地，光伏阵列的发电量可以根据光照强度进行预估，或根据电表对发电量进行度量，此处不做限定。
可选地，光伏发电系统的闲置发电量可以由闲置发电功率来度量。获取光伏发电功率和耗电功率，该耗电功率包括负载耗电功率和储能设备充电功率，由光伏发电功率减去耗电功率可以得到光伏发电系统的闲置发电功率。
可选地，光伏发电系统可以根据预设的时长周期性获取电池温度和闲置发电量。
302、判断电池温度是否小于或等于低温阈值；
根据获取的电池温度，判断该电池温度是否小于或等于预设的低温阈值。当温度过低时会影响电池的寿命和性能，当温度小于-20℃时，电池寿命会下降，当电池温度小于5℃时，电池性能会下降。因此，可以预设电池工作的低温阈值，本实施例中对于低温阈值的具体数值不做限定。该低温阈值为实际应用中根据储能装置中的电池的特性确定的一个经验值，此 处具体不作限定。同理，在以下的实施例中还会出现高温阈值、第一高温阈值、第二高温阈值、第三高温阈值和第四高温阈值，均为根据电池特性确定的经验值。“第一”、“第二”、“第三”和“第四”仅用于区分为不同的温度门限。
可选地，低温阈值可以设置在5℃至10℃范围内，示例性的。若获取的电池温度为3℃，则确定电池温度小于低温阈值；若电池温度为25℃，则确定电池温度大于低温阈值。
需要说明的是，步骤302为可选步骤，可以执行，也可以不执行，此处不做限定。
303、若电池温度大于低温阈值，则判断闲置发电量是否大于零；
若步骤302中，判断电池温度大于该预设的低温阈值，则判断闲置发电量是否大于零。
根据需获取光伏阵列的发电量、负载耗电量和储能设备耗电量可以计算得到闲置发电量，可选地，光伏发电系统的闲置发电量可以由闲置发电功率来度量。获取光伏发电功率和耗电功率，该耗电功率包括负载耗电功率和储能设备充电功率，由光伏发电功率减去耗电功率可以得到光伏发电系统的闲置发电功率。若光伏发电功率大于耗电功率，则闲置发电量大于零，此时，由于光伏发电装置的产生的电量有富余，将出现弃光现象，造成电能浪费。若光伏发电功率等于耗电功率，则确定闲置发电量等于零。
可以理解的是，当光伏阵列的发电量小于负载耗电量和储能设备耗电量时，负载及储能设备可能降低耗电功率，或者储能设备可能掉电，此时可以认为闲置发电量小于零。
示例性的，若当前光伏发电功率为60千瓦(KW)、负载耗电功率为10KW、储能设备充电功率为30KW，此时闲置发电功率为20KW；若当前闲置发电量功率为60KW、负载耗电功率为30KW、储能设备充电功率为30KW，此时闲置发电功率为0。
304、若电池温度大于低温阈值，且闲置发电量大于零，则确定制冷温度为第一目标温度，或者，则根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为该第一目标温度；
储能装置中的制冷设备可以对温度进行控制，例如，通过空调降低电池储能柜内部的空气温度，通过控制电池所处环境的温度控制电池温度。该第一目标温度为实际应用中根据储能装置中的电池特性确定的一个经验值，此处具体不作限定。同理，在以下的实施例中还会出现第二目标温度、第三目标温度、第四目标温度、第五目标温度、第六目标温度、第七目标温度和第八目标温度，均为根据电池特性确定的经验值。“第一”、“第二”、“第三”、“第四”、“第五”、“第六”、“第七”和“第八”仅用于区分不同的目标温度。可以理解的是，上述第一目标温度、第二目标温度、第三目标温度、第四目标温度、第五目标温度、第六目标温度、第七目标温度和第八目标温度应属于电池适宜的工作温度范围。
若步骤303中，判断闲置发电量大于零，可以直接确定制冷温度为预设的第一目标温度。例如10℃。
或者，可根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为该第一目标温度。根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为该第一目标温度的方式有多种，下面分别进行介绍：
可选地，若电池温度大于低温阈值，且闲置发电量大于零，则根据该闲置发电量确定该制冷温度为该第一目标温度，该闲置发电量与该第一目标温度负相关，即闲置发电量越大，该第一目标温度越小，可以理解的是，该第一目标温度的下限值应属于电池适宜的工作温度范围内；
可选地，若电池温度大于低温阈值，且闲置发电量大于零，则根据该电池温度确定该制冷温度为该第一目标温度，该电池温度与该第一目标温度负相关，即电池温度越高，则第一目标温度越小，通过设置较低的制冷温度可以迅速降低电池温度，充分利用闲置发电量。可以理解的是，该第一目标温度应属于电池适宜的工作温度范围内。
可选地，若电池温度大于低温阈值，且闲置发电量大于零，则根据该电池温度和该闲置发电量确定该制冷温度为该第一目标温度，该闲置发电量与该第一目标温度负相关，且该电池温度与该第一目标温度负相关，根据闲置发电量和电池温度确定第一目标温度的具体算法此处不做限定。可以理解的是，该第一目标温度应属于电池适宜的工作温度范围内。
可选地，请参阅图4和图5，分别介绍了根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为该第一目标温度的两种具体实施方式。
一、请参阅图4：
401、判断闲置发电量是否小于预设的第一阈值；
若闲置发电量大于零，则可以进一步判断闲置发电量是否小于预设的第一阈值，该第一阈值为正数，具体数值此处不做限定。
可选地，可以判断闲置发电功率是否小于预设的第一阈值。
402、若闲置发电量小于预设的第一阈值，则确定该制冷温度为第三目标温度；
若闲置发电量小于预设的第一阈值，则确定该制冷温度为第三目标温度。
示例性的，若第一阈值为10KW，闲置发电功率为8KW，则确定制冷温度即第三目标温度为20℃。
403、若闲置发电量大于或等于预设的第一阈值，确定该制冷温度为第四目标温度，该第四目标温度小于该第三目标温度；
若闲置发电量小于预设的第一阈值，则确定该制冷温度为第四目标温度，该第四目标温度小于该第三目标温度。
示例性地，若第一阈值为10KW，闲置发电功率为15KW，则可确定制冷温度即第四目标温度为15℃。
二、请参阅图5：
501、判断电池温度是否小于预设的第一高温阈值；
若闲置发电量大于零，则可以进一步判断电池温度是否小于预设的第一高温阈值，第一高温阈值的数值此处不做限定，例如可以是25℃。
502、若电池温度大于或等于预设的第一高温阈值，则判断电池温度是否小于预设的第二高温阈值；
若步骤501中判断电池温度大于或等于预设的第一高温阈值，则判断电池温度是否小于预设的第二高温阈值，第二高温阈值的数值此处不做限定，例如可以是35℃。
503、若电池温度大于或等于该第一高温阈值，且小于该第二高温阈值，则确定该制冷温度为第五目标温度；
若电池温度大于或等于该第一高温阈值，且小于该第二高温阈值，则确定该制冷温度为第五目标温度，第五目标温度的数值此处不做限定，例如可以是20℃。
示例性的，若第一高温阈值为25℃，第二高温阈值为35℃，电池温度为30℃，则确定制 冷温度即目标第五温度为20℃。
504、若电池温度大于或等于该第二高温阈值，则确定该制冷温度为第六目标温度，该第六目标温度小于该第五目标温度；
若电池温度温度大于或等于该第二高温阈值，则确定该制冷温度为第六目标温度，该第六目标温度小于该第五目标温度，该第六目标温度的数值此处不做限定，例如可以是15℃。
示例性的，若第二高温阈值为35℃，电池温度为40℃，则确定制冷温度即目标第六温度为15℃。
505、若电池温度小于该第一高温阈值，则执行其他操作；
若电池温度小于第一高温阈值，则执行其他操作，例如可以关闭制冷设备，或者提高获取电池温度的频率，即加强对电池温度的监控，具体操作方式此处不做限定。
上面介绍了根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为该第一目标温度的多种可能的实现方式，应用时可以根据实际情况确定具体实现方式，此处不做限定。
305、若电池温度大于低温阈值，且闲置发电量小于或等于零，则根据该电池温度确定该制冷温度为第二目标温度或关闭制冷设备；
若步骤303中，判断闲置发电量小于或等于零，则根据该电池温度确定该制冷温度为第二目标温度或关闭制冷设备。该第二目标温度大于该第一目标温度，第二目标温度的具体数值此处不做限定。
当电池温度大于低温阈值且闲置发电量小于或等于零时，根据该电池温度确定该制冷温度为第二目标温度的实现方式有多种，下面分别进行介绍：
可选地，若该电池温度大于或等于预设的高温阈值，则根据该电池温度确定制冷温度为该第二目标温度，该第二目标温度与该电池温度正相关。由于闲置发电量小于或等于零即光伏发电系统无闲置电量，当电池温度大于或等于预设的高温阈值时，第二目标温度与该电池温度正相关，由此可以在控制电池温度的同时减少电能消耗。
可选地，请参阅图6和图7，分别介绍了根据该电池温度确定该制冷温度为第二目标温度的两种具体实施方式。
一、请参阅图6，储能设备温度控制方法的另一个实施例示意图，介绍了根据该电池温度确定该制冷温度为第二目标温度的一个实施方式。
601、判断电池温度是否小于预设的高温阈值；
判断电池温度是否小于预设的高温阈值，高温阈值的具体数值此处不做限定，可以理解的是，该高温阈值大于预设的低温阈值。
602、若电池温度大于或等于预设的高温阈值，则确定该制冷温度为第二目标温度；
若电池温度大于或等于预设的高温阈值，则确定该制冷温度为第二目标温度，该第二目标温度大于该第一目标温度。例如，高温阈值为35℃，第一目标温度为10℃，第二目标温度为25℃，若电池温度为40℃，大于高温阈值35℃，则确定制冷温度为第二目标温度25℃。
603、若该电池温度小于预设的高温阈值，则关闭制冷设备；
若该电池温度小于预设的高温阈值，则关闭制冷设备。
示例性的，高温阈值为35℃，第一目标温度为10℃，第二目标温度为25℃。若电池温度为28℃，则关闭制冷设备。当电池温度小于预设的高温阈值时关闭制冷设备，可以节省电能 消耗。
二、请参阅图7，为储能设备温度控制方法的另一个实施例示意图，介绍了根据该电池温度确定该制冷温度为第二目标温度的另一个实施方式。
701、判断电池温度是否小于预设的第三高温阈值；
判断电池温度是否小于预设的第三高温阈值，对于第三高温阈值的具体数值不做限定，第三高温阈值例如可以是30℃。
702、若电池温度大于或等于该第三高温阈值，则判断电池温度是否小于预设的第四高温阈值；
若电池温度大于或等于该第三高温阈值，则判断电池温度是否小于预设的第四高温阈值，第四高温阈值的具体数值不做限定，第四高温阈值例如可以是40℃。
703、若电池温度大于或等于该第三高温阈值，且小于预设的第四高温阈值，则确定制冷温度为第七目标温度；
若电池温度大于或等于该第三高温阈值，且小于预设的第四高温阈值，则确定制冷温度为第七目标温度，第七目标温度的具体数值不做限定。
示例性的，第三高温阈值为30℃，第四高温阈值为40℃，第七目标温度为25℃。若电池温度为36℃，大于30℃且小于40℃，则确定制冷温度即第七目标温度为25℃。
704、若电池温度大于或等于预设的第四高温阈值，则确定制冷温度为第八目标温度，第八目标温度大于该第七目标温度；
若电池温度大于或等于预设的第四高温阈值，则确定制冷温度为第八目标温度，第八目标温度大于该第七目标温度，第八目标温度的具体数值不做限定。
示例性的，第三高温阈值为30℃，第四高温阈值为40℃，第八目标温度为33℃。若电池温度为43℃，大于40℃，则确定制冷温度即第八目标温度为33℃。
705、若电池温度小于预设的第三高温阈值，则关闭制冷设备；
若电池温度小于预设的第三高温阈值，则关闭制冷设备。
示例性的，第三高温阈值为30℃，若电池温度为28℃，则关闭制冷设备，可以节省电能。
上面介绍了根据该电池温度确定该制冷温度为第二目标温度的多种可能的实现方式，应用时可以根据实际情况确定具体实现方式，此处不做限定。
306、若电池温度小于或等于低温阈值，则关闭制冷设备；
若步骤302中，判断电池温度小于或等于低温阈值，则关闭制冷设备。可以理解的是，当电池温度小于或等于低温阈值，电池温度较低，无需制冷设备进行降温。
示例性的，预设低温阈值为5℃，若电池温度为3℃，则关闭制冷设备。
本申请实施例提供的储能设备温度控制方法，可以根据电池温度和闲置发电量综合确定制冷温度，当闲置发电量大于零时，可以通过确定较低的制冷温度以充分地利用电能，减少弃光电量，相较仅根据电池温度决定是否制冷，可以提高光伏发电装置产电的利用率。
为了便于理解本申请实施例的方案，请参阅图8，为本申请实施例中储能设备温度控制的方法的另一个实施例示意图：
本申请实施例提供的储能设备温度控制的方法为：
801、获取光伏发电系统的闲置发电量和储能装置的电池温度；
802、判断电池温度是否小于或等于低温阈值；
803、若电池温度大于低温阈值，则判断闲置发电量是否大于零；
804、若电池温度大于低温阈值，且闲置发电量大于零，则确定制冷温度为第一目标温度；
805、若电池温度大于低温阈值，且闲置发电量小于或等于零，则判断电池温度是否大于或等于高温阈值，该高温阈值大于该低温阈值；
806、若电池温度大于或等于高温阈值，且闲置发电量小于或等于零，则确定该制冷温度为第二目标温度，该第二目标温度大于第一目标温度；
807、若电池温度大于低温阈值，或者，若电池温度大于低温阈值，且闲置发电量小于或等于零，且电池温度小于高温阈值，则关闭制冷设备。
示例性的，预设低温阈值为5℃，高温阈值为35℃。预设第一目标温度为10℃，第二目标温度为25℃。
例1：若获取的电池温度为3℃，小于预设的低温阈值，则关闭制冷设备；
例2：若获取的电池温度为25℃，闲置发电量大于零，由于电池温度大于低温阈值，且闲置发电量大于零，确定制冷温度为第一目标温度10℃。
例3：若获取的电池温度为30℃，闲置发电量为零，由于电池温度大于低温阈值，小于高温阈值，且闲置发电量为零，则关闭制冷设备。
例4：若获取的电池温度为40℃，闲置发电量为零，由于电池温度大于高温阈值且闲置发电量为零，则确定智能温度为第二目标温度25℃。
上面介绍了储能设备温度控制的方法，下面对执行该方法的设备进行介绍，请参阅图9，为本申请实施例中储能设备温度控制装置的一个实施例示意图。
在实际应用中，该储能设备温度控制装置可以是独立的设备，也可以集成于光伏发电系统的中央控制单元，具体此处不做限定。
本申请实施例中储能设备温度控制装置，包括：
获取单元901，用于获取光伏发电系统的闲置发电量和储能装置的电池温度，该光伏发电系统包括光伏阵列、该储能装置和负载，该储能装置包括制冷设备和电池，该闲置发电量为该光伏阵列的产电量与该储能装置和该负载的耗电量的差值；
确定单元902，用于根据该闲置发电量和该电池温度确定该制冷设备的制冷温度，该制冷设备用于控制该电池的温度。
该确定单元902具体用于：
若该闲置发电量大于零，则确定该制冷温度为第一目标温度，或者，则根据储能设备的电池温度和/或该闲置发电量确定该制冷温度为该第一目标温度；若该闲置发电量小于或等于零，则根据该电池温度确定该制冷温度为第二目标温度或关闭制冷设备，该第二目标温度大于该第一目标温度。
该确定单元902具体用于：
根据该闲置发电量确定该制冷温度为该第一目标温度，该闲置发电量与该第一目标温度负相关；或者，根据该电池温度确定该制冷温度为该第一目标温度，该电池温度与该第一目标温度负相关；或者，根据该电池温度和该闲置发电量确定该制冷温度为该第一目标温度，该闲置发电量与该第一目标温度负相关，且该电池温度与该第一目标温度负相关。
该确定单元902具体用于：
若该闲置发电量大于零且小于预设的第一阈值，则确定该制冷温度为第三目标温度，该第一阈值大于零，该第三目标温度小于该第二目标温度；若该闲置发电量大于或等于该第一阈值，则确定该制冷温度为第四目标温度，该第四目标温度小于该第三目标温度。
该确定单元902具体用于：
若该电池温度大于或等于预设的第一高温阈值，且小于预设的第二高温阈值，则确定该制冷温度为第五目标温度，该第二高温阈值大于该第一高温阈值；若该电池温度大于该第二高温阈值，则确定该制冷温度为第六目标温度，该第六目标温度小于该第五目标温度。
该确定单元902具体用于：
若该电池温度大于或等于预设的高温阈值，则确定该制冷温度为第二目标温度；若该电池温度小于该高温阈值，则关闭制冷设备。
该确定单元902具体用于：
根据该电池温度确定制冷温度为该第二目标温度，该第二目标温度与该电池温度正相关。
该确定单元902具体用于：
若该电池温度大于或等于预设的第三高温阈值，且小于预设的第四高温阈值时，则确定制冷温度为第七目标温度，该第四高温阈值大于该第三高温阈值，该第七目标温度大于该第一目标温度；若该电池温度大于或等于该第四高温阈值，则确定制冷温度为第八目标温度，该第八目标温度大于该第七目标温度。
该装置还包括：
关闭单元903，若该电池温度小于或等于预设的低温阈值，则关闭制冷设备，该低温阈值小于该第一高温阈值、该第三高温阈值和该高温阈值中任一项。
该获取单元901具体用于：
获取光伏发电功率和耗电功率，该耗电功率包括该负载的耗电功率和该电池的充电功率；该确定单元902还用于，根据该光伏发电功率与该耗电功率的差值确定该闲置发电量。
请参阅图10，为本申请实施例中一种储能设备温度控制装置的另一个实施例示意图。
该储能设备温度控制装置1000可因配置或性能不同而产生比较大的差异，可以包括一个或一个以上处理器1001和存储器1005，该存储器1005中存储有程序或数据。
其中，存储器1005可以是易失性存储或非易失性存储。处理器1001可以与存储器1005通信，在储能设备温度控制装置1000上执行存储器1005中的一系列指令。
储能设备温度控制装置1000还可以包括一个或一个以上电源1002；一个或一个以上有线或无线网络接口1003；一个或一个以上输入输出接口1004。
本实施例中储能设备温度控制装置1000中的处理器1001所执行的流程可以参考前述方法实施例中描述的方法流程，此处不加赘述。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结 合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (23)

  1. 一种储能设备温度控制方法，其特征在于，包括：
    获取光伏发电系统的闲置发电量和储能装置的电池温度，所述光伏发电系统包括光伏阵列、所述储能装置和负载，所述储能装置包括制冷设备和电池，所述闲置发电量为所述光伏阵列的产电量与所述储能装置和所述负载的耗电量的差值；
    根据所述闲置发电量和所述电池温度确定所述制冷设备的制冷温度，所述制冷设备用于控制所述电池的温度。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述闲置发电量和所述电池温度确定所述制冷设备的制冷温度：
    若所述闲置发电量大于零，则确定所述制冷温度为第一目标温度，或者，则根据储能设备的电池温度和/或所述闲置发电量确定所述制冷温度为所述第一目标温度；
    若所述闲置发电量小于或等于零，则根据所述电池温度确定所述制冷温度为第二目标温度或关闭制冷设备，所述第二目标温度大于所述第一目标温度。
  3. 根据权利要求2所述方法，其特征在于，所述根据储能设备的电池温度和/或所述闲置发电量确定所述制冷温度为第一目标温度包括：
    根据所述闲置发电量确定所述制冷温度为所述第一目标温度，所述闲置发电量与所述第一目标温度负相关；
    或者，根据所述电池温度确定所述制冷温度为所述第一目标温度，所述电池温度与所述第一目标温度负相关；
    或者，根据所述电池温度和所述闲置发电量确定所述制冷温度为所述第一目标温度，所述闲置发电量与所述第一目标温度负相关，且所述电池温度与所述第一目标温度负相关。
  4. 根据权利要求2所述方法，其特征在于，所述根据储能设备的电池温度和/或所述闲置发电量确定所述制冷温度为第一目标温度包括：
    若所述闲置发电量大于零且小于预设的第一阈值，则确定所述制冷温度为第三目标温度，所述第一阈值大于零，所述第三目标温度小于所述第二目标温度；
    若所述闲置发电量大于或等于所述第一阈值，则确定所述制冷温度为第四目标温度，所述第四目标温度小于所述第三目标温度。
  5. 根据权利要求2所述的方法，其特征在于，所述根据储能设备的电池温度和/或所述闲置发电量确定所述制冷温度为第一目标温度包括：
    若所述电池温度大于或等于预设的第一高温阈值，且小于预设的第二高温阈值，则确定所述制冷温度为第五目标温度，所述第二高温阈值大于所述第一高温阈值；
    若所述电池温度大于所述第二高温阈值，则确定所述制冷温度为第六目标温度，所述第六目标温度小于所述第五目标温度。
  6. 根据权利要求2至5中任一项所述的方法，其特征在于，所述根据所述电池温度确定所述制冷温度为第二目标温度或关闭制冷设备包括：
    若所述电池温度大于或等于预设的高温阈值，则确定所述制冷温度为第二目标温度；
    若所述电池温度小于所述高温阈值，则关闭制冷设备。
  7. 根据权利要求6所述的方法，其特征在于，所述确定所述制冷温度为第二目标温度包 括：
    根据所述电池温度确定制冷温度为所述第二目标温度，所述第二目标温度与所述电池温度正相关。
  8. 根据权利要求6所述的方法，其特征在于，所述确定所述制冷温度为第二目标温度包括：
    若所述电池温度大于或等于预设的第三高温阈值，且小于预设的第四高温阈值时，则确定制冷温度为第七目标温度，所述第四高温阈值大于所述第三高温阈值，所述第七目标温度大于所述第一目标温度；
    若所述电池温度大于或等于所述第四高温阈值，则确定制冷温度为第八目标温度，所述第八目标温度大于所述第七目标温度。
  9. 根据权利要求1至8中任一项所述的方法，其特征在于，所述方法还包括：
    若所述电池温度小于或等于预设的低温阈值，则关闭制冷设备，所述低温阈值小于所述第一高温阈值、所述第三高温阈值和所述高温阈值中任一项。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述获取光伏发电系统的闲置发电量包括：
    获取光伏发电功率和耗电功率，所述耗电功率包括所述负载的耗电功率和所述电池的充电功率；
    根据所述光伏发电功率与所述耗电功率的差值确定所述闲置发电量。
  11. 一种储能设备温度控制装置，其特征在于，包括：
    获取单元，用于获取光伏发电系统的闲置发电量和储能装置的电池温度，所述光伏发电系统包括光伏阵列、所述储能装置和负载，所述储能装置包括制冷设备和电池，所述闲置发电量为所述光伏阵列的产电量与所述储能装置和所述负载的耗电量的差值；
    确定单元，用于根据所述闲置发电量和所述电池温度确定所述制冷设备的制冷温度，所述制冷设备用于控制所述电池的温度。
  12. 根据权利要求11所述的装置，其特征在于，所述确定单元具体用于：
    若所述闲置发电量大于零，则确定所述制冷温度为第一目标温度，或者，则根据储能设备的电池温度和/或所述闲置发电量确定所述制冷温度为所述第一目标温度；
    若所述闲置发电量小于或等于零，则根据所述电池温度确定所述制冷温度为第二目标温度或关闭制冷设备，所述第二目标温度大于所述第一目标温度。
  13. 根据权利要求12所述装置，其特征在于，所述确定单元具体用于：
    根据所述闲置发电量确定所述制冷温度为所述第一目标温度，所述闲置发电量与所述第一目标温度负相关；
    或者，根据所述电池温度确定所述制冷温度为所述第一目标温度，所述电池温度与所述第一目标温度负相关；
    或者，根据所述电池温度和所述闲置发电量确定所述制冷温度为所述第一目标温度，所述闲置发电量与所述第一目标温度负相关，且所述电池温度与所述第一目标温度负相关。
  14. 根据权利要求12所述装置，其特征在于，所述确定单元具体用于：
    若所述闲置发电量大于零且小于预设的第一阈值，则确定所述制冷温度为第三目标温度， 所述第一阈值大于零，所述第三目标温度小于所述第二目标温度；
    若所述闲置发电量大于或等于所述第一阈值，则确定所述制冷温度为第四目标温度，所述第四目标温度小于所述第三目标温度。
  15. 根据权利要求12所述的装置，其特征在于，所述确定单元具体用于：
    若所述电池温度大于或等于预设的第一高温阈值，且小于预设的第二高温阈值，则确定所述制冷温度为第五目标温度，所述第二高温阈值大于所述第一高温阈值；
    若所述电池温度大于所述第二高温阈值，则确定所述制冷温度为第六目标温度，所述第六目标温度小于所述第五目标温度。
  16. 根据权利要求12至15中任一项所述的装置，其特征在于，所述确定单元具体用于：
    若所述电池温度大于或等于预设的高温阈值，则确定所述制冷温度为第二目标温度；
    若所述电池温度小于所述高温阈值，则关闭制冷设备。
  17. 根据权利要求16所述的装置，其特征在于，所述确定单元具体用于：
    根据所述电池温度确定制冷温度为所述第二目标温度，所述第二目标温度与所述电池温度正相关。
  18. 根据权利要求16所述的装置，其特征在于，所述确定单元具体用于：
    若所述电池温度大于或等于预设的第三高温阈值，且小于预设的第四高温阈值时，则确定制冷温度为第七目标温度，所述第四高温阈值大于所述第三高温阈值，所述第七目标温度大于所述第一目标温度；
    若所述电池温度大于或等于所述第四高温阈值，则确定制冷温度为第八目标温度，所述第八目标温度大于所述第七目标温度。
  19. 根据权利要求11至18中任一项所述的装置，其特征在于，所述装置还包括：
    关闭单元，若所述电池温度小于或等于预设的低温阈值，则关闭制冷设备，所述低温阈值小于所述第一高温阈值、所述第三高温阈值和所述高温阈值中任一项。
  20. 根据权利要求11至19中任一项所述的装置，其特征在于，所述获取单元具体用于：
    获取光伏发电功率和耗电功率，所述耗电功率包括所述负载的耗电功率和所述电池的充电功率；
    所述确定单元还用于，根据所述光伏发电功率与所述耗电功率的差值确定所述闲置发电量。
  21. 一种储能设备温度控制装置，其特征在于，包括：
    处理器和输入输出设备；
    所述输入输出设备用于传输数据；
    所述处理器用于执行如权利要求1至10中任一项所述的方法。
  22. 一种包含指令的计算机程序产品，其特征在于，当其在计算机上运行时，使得所述计算机执行如权利要求1至10中任一项所述的方法。
  23. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储指令，当所述指令在计算机上运行时，使得所述计算机执行如权利要求1至10中任一项所述的方法。
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