A valley electrochemical heat storage and energy supply system based on photothermal coupling

Abstract

The present invention discloses a valley electrochemical heat storage and energy supply system based on photothermal coupling, which relates to the field of energy storage and supply technology. The components of the system include: a photothermal module, an electrochemical energy storage module, an intelligent control module, and a heat exchange and energy supply module. The present invention realizes efficient energy conversion and intelligent complementarity through the synergistic effect of the photothermal module and the electrochemical energy storage module. The photothermal module can efficiently collect solar energy and convert it into thermal energy storage, providing a stable heat source for the electrochemical energy storage module, assisting electrochemical reactions, and improving energy storage efficiency. At the same time, the intelligent control module dynamically adjusts the heat output and focusing parameters of the photothermal module according to the temperature state and power demand of the electrochemical energy storage module, realizing intelligent distribution and regulation of energy. This synergistic effect not only improves the energy utilization efficiency, but also enhances the stability and reliability of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage and supply, and specifically to a valley electrochemical heat storage and energy supply system based on photothermal coupling. Background Art

[0002] In today's society, energy demand continues to rise with economic development and population growth. Whether it is high-temperature smelting and chemical synthesis in industrial production, or heating, cooling and hot water supply in residents' daily lives, dependence on energy is everywhere. The traditional energy supply system mainly relies on fossil fuel power generation and direct heating. This model not only faces the crisis of increasing depletion of fossil energy, but also brings a heavy burden to the ecological environment due to the large amount of greenhouse gas emissions during the combustion process. There is an urgent need to transform to clean and sustainable energy utilization methods.

[0003] Although there are currently a variety of solar energy conversion and storage technologies, such as photovoltaic power generation, solar thermal power generation, and electrochemical energy storage, these technologies still have many shortcomings in practical applications. Although photovoltaic power generation technology has high conversion efficiency, it is greatly affected by environmental factors such as light intensity and temperature, and the cost of electric energy storage is relatively high. Although solar thermal power generation technology can provide stable energy, the heat storage efficiency and the secondary conversion efficiency of thermal energy need to be improved. Although electrochemical energy storage technology has the advantages of high energy density and long cycle life, battery performance is easily affected in high temperature environments, resulting in a decrease in energy storage efficiency, and battery thermal management is complex and the cost is high. In addition, in the existing technology, the synergistic effect of solar thermal and electrochemical energy storage has not been fully utilized, making it difficult to achieve efficient energy conversion and intelligent complementarity.

[0004] In summary, a new heat storage and energy supply system is developed that can effectively integrate the advantages of solar thermal and valley electricity and overcome their respective shortcomings to improve the comprehensive benefits of energy utilization. Summary of the Invention

[0005] The purpose of the present invention is to make up for the shortcomings of the existing technology and provide a valley electrochemical heat storage energy supply system based on photothermal coupling. It can significantly improve the stability and reliability of energy supply through the synergistic mechanism of photothermal coupling and valley electricity. On the one hand, the photothermal module collects solar energy and converts it into thermal energy storage, laying the foundation for system energy supply. Even in periods of poor lighting, the electrochemical energy storage module can be replenished at any time to ensure uninterrupted energy supply; on the other hand, the intelligent control module accurately adjusts the distribution of photothermal and valley electricity energy according to real-time working conditions to avoid energy supply interruptions and ensure energy supply stability.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a valley electrochemical heat storage and energy supply system based on photothermal coupling, the components of which include: a photothermal module, an electrochemical energy storage module, an intelligent control module, and a heat exchange and energy supply module;

[0007] The photothermal module includes a light-collecting unit, a heat conversion unit, and a heat storage unit for collecting solar energy and converting it into thermal energy for storage;

[0008] The electrochemical energy storage module includes a battery pack, a battery management unit, and a thermal management unit, which are responsible for storing and releasing electrical energy, while also monitoring and regulating battery temperature;

[0009] The intelligent control module includes a thermally controlled electrical unit and an electrically controlled heat-assisted power generation unit. It uses a thermal-electric bidirectional feedback regulation algorithm to dynamically adjust the heat output and concentration parameters of the solar thermal module according to the temperature state and power demand of the electrochemical energy storage module.

[0010] The thermal-electric bidirectional feedback regulation algorithm utilizes the real-time temperature T es , set the lower limit of the suitable working temperature range to T min , the upper limit is T max ;

[0011] When T es >T max When the heat output is reduced, the photothermal module is controlled to reduce the heat output and the focusing area S of the focusing unit is adjusted to follow the Focusing is performed, where S0 is the initial focusing area, by reducing the focusing area and setting the focusing area to reduce the safety value S aq And S≤S aq When maintaining the focusing area S aq , reduce the heat transferred from the solar thermal module to the electrochemical energy storage module to prevent the battery from overheating;

[0012] When T es <T min And the power demand is E d When the electric control thermal auxiliary power generation mode is started, the thermal energy Q stored in the solar thermal module is th , when Q th ≥E d ×k, k is the heat-electricity conversion coefficient. The intelligent control module controls the solar thermal module to supply heat to the electrochemical energy storage module to assist in power generation. At the same time, the focusing unit is adjusted to increase the focusing area S. Concentrate light to capture more solar energy and convert it into thermal energy to meet the demand for additional electricity.

[0013] The heat exchange and energy supply module includes a heat exchanger and an energy buffer unit, has an energy buffer function, and provides adaptive energy according to different load requirements.

[0014] Furthermore, the photothermal module includes a light collecting unit, a heat conversion unit and a heat storage unit, wherein:

[0015] The focusing unit is composed of a focusing lens array, which adjusts the angle in real time according to the control instructions transmitted by the intelligent control module to focus the scattered sunlight onto the heat conversion unit;

[0016] The heat conversion unit collects and focuses solar energy, converts the light energy into heat energy, and transmits the heat energy to the heat storage unit in real time;

[0017] The heat storage unit temporarily stores the heat energy generated by the heat conversion unit, on the one hand waiting for instructions from the intelligent control module to supply heat to the electrochemical energy storage module as needed to assist the electrochemical reaction; on the other hand continuously providing basic heat energy for the heat exchange and energy supply module.

[0018] Furthermore, the electrochemical energy storage module includes a battery pack, a battery management unit and a thermal management unit, wherein:

[0019] The battery pack is charged according to the current and voltage parameters regulated by the battery management unit, stores electrical energy, and discharges according to instructions when supplying energy;

[0020] The battery management unit monitors the battery pack power, voltage, and current parameters in real time, communicates bidirectionally with the intelligent control module, receives control instructions to optimize the charge and discharge strategy, and feeds back battery status information.

[0021] The thermal management unit has a built-in temperature sensor. When the battery pack temperature deviates from the appropriate operating temperature range {T min , T max}, a temperature warning is sent to the intelligent control module in real time, and cooling and heating measures are started according to the instructions to adjust the battery temperature, and heat exchange and cooperative temperature control are carried out with the solar thermal module.

[0022] Furthermore, the thermal management unit of the electrochemical energy storage module uses the heat Q transferred to the battery pack by the photothermal module to control the temperature in cooperation with the photothermal module. p , when the battery pack temperature T es When the temperature deviates from the suitable range, according to the formula Calculate the battery pack temperature change ΔT to accurately control the heat dissipation and heating measures to ensure that the battery pack temperature is stable in an appropriate range, where P s is the heat dissipation power of the thermal management unit itself, c b is the specific heat capacity of the battery pack, m b is the mass of the battery pack, and t1 is the regulation time of the battery pack.

[0023] Furthermore, the battery management unit of the electrochemical energy storage module uses the electricity price C during the off-peak period to regulate the charging of the battery pack. g and the current remaining battery charge E r , according to the formula Calculate the charging current I, where t is the valley time, Ec The rated capacity of the battery pack is used to optimize the charging cost and give priority to fully charging the battery during the valley phase. r ≈E c When the battery is in good condition, Adjust the charging current, where I0 is the initially set charging current, to avoid damage to the battery due to overcharging.

[0024] Furthermore, the heat exchange and functional module includes a heat exchanger and an energy buffer unit, wherein:

[0025] One end of the heat exchanger is connected to the thermal storage unit of the photothermal module and the electrochemical energy storage module. When faced with different load requirements, the heat exchanger converts input energy into output heat energy according to the instructions of the intelligent control module.

[0026] During the system power supply process, when the energy output of the photothermal module and the electrochemical energy storage module fluctuates, the energy buffer unit maintains the stability of the power supply, that is, it absorbs and stores heat energy when it is in excess, and releases and supplements heat energy when it is insufficient, thereby ensuring the stability of the heat energy output of the heat exchanger.

[0027] Furthermore, the heat exchange and function module uses a heat exchanger, which is based on the real-time temperature demand T fed back by the load end. r and the required energy power P r To control the output, the heat exchange efficiency of the heat exchanger is η, when the heat energy provided by the photothermal module is Q th , the electric energy provided by the electrochemical energy storage module is E es , satisfying Q th ×η+E es ≥P r When the energy is supplied normally, if it is not satisfied, the intelligent control module coordinates the module to increase the energy output to ensure stable energy supply, and in the energy supply process, the energy buffer unit Energy storage, where E b Reserve energy for the buffer unit, E max It is the maximum energy storage capacity of the buffer unit to cope with energy supply fluctuations.

[0028] Furthermore, the intelligent control module includes a thermal control electric unit and an electrically controlled heat-assisted power generation unit, wherein:

[0029] When the temperature of the electrochemical energy storage module is high and affects the energy storage performance, the intelligent control module starts the thermal control unit to adjust the heat output of the photothermal module to reduce the battery temperature and protect the battery performance;

[0030] When the demand for electricity is at its peak and the electrochemical energy storage is insufficient, the electrically controlled thermal auxiliary power generation unit utilizes the thermal energy stored in the photothermal module to perform auxiliary power generation, thereby realizing intelligent complementarity between thermal energy and electrical energy.

[0031] Compared with the existing technology, this valley electrochemical heat storage and energy supply system based on photothermal coupling has the following beneficial effects:

[0032] 1. The present invention achieves efficient energy conversion and intelligent complementarity through the synergistic effect of the photothermal module and the electrochemical energy storage module. The photothermal module can efficiently collect solar energy and convert it into thermal energy for storage, providing a stable heat source for the electrochemical energy storage module, assisting the electrochemical reaction, and improving energy storage efficiency. At the same time, the intelligent control module dynamically adjusts the heat output and focusing parameters of the photothermal module according to the temperature state and power demand of the electrochemical energy storage module, realizing intelligent energy distribution and regulation. This synergistic effect not only improves energy utilization efficiency, but also enhances the stability and reliability of the system.

[0033] Second, the present invention's thermal-electric bidirectional feedback regulation mechanism addresses the performance degradation of electrochemical energy storage modules in high-temperature environments. By monitoring battery temperature in real time, the intelligent control module can promptly adjust the heat output of the solar thermal module to reduce battery temperature and protect battery performance. Furthermore, during peak power demand or when electrochemical energy storage is insufficient, the module utilizes some of the thermal energy stored in the solar thermal module for auxiliary power generation, achieving intelligent complementarity between thermal and electrical energy. This regulation mechanism not only improves battery life and energy storage efficiency, but also enhances the system's flexibility and adaptability.

[0034] Other advantages, objects and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0036] Figure 1 This is an operational flow chart of a valley electrochemical thermal energy storage system based on photothermal coupling;

[0037] Figure 2 This is a block diagram of the composition of a valley electrochemical heat storage and energy supply system based on photothermal coupling. DETAILED DESCRIPTION

[0038] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0039] Example 1

[0040] This embodiment demonstrates in detail the application process of a valley electrochemical heat storage and energy supply system based on photothermal coupling. The system is mainly composed of a photothermal module, an electrochemical energy storage module, an intelligent control module, and a heat exchange and energy supply module. Through the close collaboration between the modules and the precise regulation of the intelligent control module, it realizes the efficient utilization of solar energy and valley electricity, the intelligent conversion and storage of energy, and the stable and reliable energy supply.

[0041] At the initial start-up of the system, the intelligent control module first performs a comprehensive self-check of the system to ensure that all modules and units are functioning normally. At the same time, it sets the initial parameters for the concentrating unit, heat conversion unit and heat storage unit of the photothermal module, the battery pack, battery management unit and thermal management unit of the electrochemical energy storage module, and the heat exchanger and energy buffer unit of the heat exchange and energy supply module, and determines the rated capacity E of the battery management unit in the electrochemical energy storage module. c , charging current I0 and other key parameters, the thermal management unit sets the lower limit of the appropriate operating temperature range T min and upper limit T max , and its own heat dissipation power P s Specific heat capacity of the battery pack c b and mass m b These parameters will be used for subsequent temperature monitoring and control calculations.

[0042] During the daytime, the solar thermal module is running, and the concentrating unit monitors the changes in sunlight intensity in real time. The concentrating mirror array accurately adjusts the angle based on the real-time monitoring data pre-transmitted by the intelligent control module to ensure that the scattered sunlight is efficiently focused on the heat conversion unit, providing sufficient energy for light-heat conversion. The heat conversion unit quickly converts light energy into heat energy, which is transmitted to the heat storage unit in real time through heat conduction after generation. During the whole process, the temperature of the heat conversion unit will gradually increase. The temperature change is monitored in real time by the built-in temperature sensor, and the data is fed back to the intelligent control module. Based on these data, the intelligent control module can, on the one hand, determine whether the light-heat conversion process is operating normally, and on the other hand, indirectly evaluate the focusing effect of the concentrating unit based on the temperature change trend. If the temperature rise is found to be abnormally slow, it may indicate that there is a focusing problem in the concentrating unit, which requires further inspection and adjustment. After receiving the heat energy transmitted by the heat conversion unit, the heat storage unit absorbs heat and its own temperature rises. During this process, the heat storage unit continuously monitors its own heat energy storage capacity Q thand temperature changes. Once the intelligent control module issues a heating instruction according to the state of the electrochemical energy storage module, the thermal storage unit will supply heat to the electrochemical energy storage module to assist the electrochemical reaction according to the instruction. For example, when the battery temperature T es Lower than the lower limit of the suitable working temperature range T min And the system has power demand E d When the intelligent control module first determines the thermal energy Q stored in the solar thermal module th Does condition Q meet? th ≥E d ×k, k is the heat energy-electricity conversion coefficient. If the conditions are met, the intelligent control module starts the heat supply auxiliary power generation process, the heat storage unit converts heat energy into electrical energy to supplement the electrochemical energy storage module, and at the same time sends an instruction to the focusing unit to increase the focusing area. The focusing area S is calculated according to the formula Adjustments are made to convert more solar energy into thermal energy to meet the demand for additional electricity.

[0043] During the off-peak period, the battery management unit of the electrochemical energy storage module starts the charging process according to the instructions of the intelligent control module. Calculate the charging current I, where C g is the electricity price during off-peak hours, E r is the current remaining capacity of the battery pack, and t is the valley power duration. In this way, the system can reasonably adjust the charging current according to the remaining capacity of the battery during the valley power phase when the electricity price is low, thereby optimizing the charging cost. When the battery pack capacity is close to the rated capacity, that is, E r ≈E c When the battery management unit further calculates the health status of the battery pack according to the formula Adjust the charging current to ensure that the battery is in good working condition even at the end of charging, thereby extending the battery's cycle life. During the energy supply period, the battery pack discharges according to the instructions of the intelligent control module. When the external load demand increases and the system determines that the electrochemical energy storage module needs to provide power, the battery pack outputs power according to the discharge strategy. The discharge current and voltage are dynamically adjusted by the battery management unit based on the load demand and the current state of the battery to ensure a stable supply of power. At the same time, the battery management unit monitors the battery pack's power, voltage, current and other parameters in real time, and feeds this information back to the intelligent control module so that the intelligent control module can make real-time adjustments to the energy balance and energy supply strategy of the entire system.

[0044] The temperature sensor of the thermal management unit monitors the battery pack temperature T in real time es When the battery pack temperature is detected to be out of the suitable operating temperature range [T min ,T max], the thermal management unit immediately sends a temperature warning message to the intelligent control module, and simultaneously starts the heat dissipation or heating measures to adjust the temperature. During the heat dissipation process, the thermal management unit dissipates the excess heat generated by the battery pack; during the heating process, it provides stable heat for the battery pack and determines the heat dissipation and heating heat according to the temperature change of the battery pack ΔT. ΔT is calculated by the formula Calculated, where Q p is the heat transferred from the solar thermal module to the battery pack, and t1 is the regulation time of the battery pack. For example, when the temperature of the battery pack is too high, that is, T es >T max When the temperature of the battery pack is too low, that is, T es <T min When the temperature is too high, the intelligent control module will control the solar thermal module to supply heat to the battery pack, and the thermal management unit will reduce the heat dissipation measures or start the heating element accordingly to ensure that the battery pack temperature is stable in an appropriate range and maintain the optimal performance of the battery.

[0045] The intelligent control module continuously collects a large amount of data such as light intensity, ambient temperature, grid electricity price, power and temperature of the electrochemical energy storage module, thermal energy storage capacity of the photothermal module and concentration status. For example, the light intensity sensor monitors the solar radiation intensity in real time, providing a direct basis for the adjustment of the concentration unit; the power and temperature sensors of the electrochemical energy storage module feed back the real-time status information of the battery pack to the intelligent control module so that it can adjust the charging and discharging strategy and thermal management measures in time. The intelligent control module uses the built-in thermal-electric bidirectional feedback regulation algorithm to process and analyze these data in real time, accurately grasp the operating status and energy flow of each module of the system, and through learning and analyzing historical data, the intelligent control module can also predict the energy demand and supply trend of the system in the future, formulate optimized energy management strategies in advance, and improve the operating efficiency and stability of the system. In addition, when the real-time temperature T es Higher than the upper limit of the suitable working temperature range T max When the heat is released, the intelligent control module immediately starts the thermal control unit, controls the solar thermal module to reduce the heat output, and adjusts the focusing area S of the focusing unit. The focusing area is calculated according to the formula Adjustment is performed, where S0 is the initial focusing area. By gradually reducing the focusing area, the heat transferred from the photothermal module to the electrochemical energy storage module is reduced, and a safety value S for reducing the focusing area is set. aq And S≤S aq When maintaining the focusing area S aq , to prevent the battery from overheating, in actual operation, when T es More than T maxWhen the temperature of the battery pack drops to a certain level as soon as possible, the intelligent control module responds quickly, calculates the adjustment value of the focusing area according to the formula, drives the motor of the focusing unit to adjust the angle of the focusing lens array, reduces the focusing area, and controls the heat storage unit to reduce the heat supply to the electrochemical energy storage module, ensuring that the battery pack temperature drops to the appropriate range as soon as possible to protect the battery performance. On the contrary, when T es <T min And the system has power demand E d When the intelligent control module starts the electronically controlled thermal assisted power generation mode, it first determines the thermal energy Q stored in the solar thermal module. th Whether the auxiliary power generation conditions are met, if Q th ≥E d ×k, then the solar thermal module is controlled to supply heat to the electrochemical energy storage module to assist in power generation, and the focusing unit is adjusted to increase the focusing area S. According to the formula Concentrate, when T es <T min And the power demand is E d When the intelligent control module detects that the CSP module has stored sufficient thermal energy during the day to meet the requirements for auxiliary power generation, it initiates the heat-assisted power generation process. The electricity generated by the thermal storage unit is then fed to the electrochemical energy storage module or directly to the load. This further replenishes the thermal energy reserve, achieving intelligent complementarity between thermal and electrical energy and maintaining a stable energy supply for the system. In addition to bidirectional thermal-electrical feedback regulation, the intelligent control module also coordinates the coordinated operation of the system's various modules. Regarding energy allocation, the intelligent control module formulates the optimal energy allocation strategy based on real-time energy demand and the energy storage status of each module. For example, in industrial production processes, if industrial equipment has a high demand for high-temperature thermal energy, the intelligent control module prioritizes energy allocation between the CSP module and the electrochemical energy storage module. Through heat exchange with the energy supply module, this energy is converted into the high-temperature, high-pressure thermal energy required by the equipment, ensuring a stable and continuous energy supply. Furthermore, the intelligent control module closely monitors the CSP module's concentration status and thermal conversion efficiency, as well as the battery health and charge / discharge status of the electrochemical energy storage module. It promptly adjusts the operating parameters of each module to ensure optimal overall system operation and reliable energy supply.

[0046] like Figure 1 As shown, the present embodiment provides a valley electrochemical heat storage and energy supply system based on photothermal coupling, and the specific steps for performing heat storage and energy supply are as follows:

[0047] During the daytime operation of the solar thermal module, the light sensor of the concentrating unit monitors the changes in the sun's position and intensity, and adjusts the concentrating mirror array to ensure that the sunlight is incident on the thermal conversion unit at the optimal angle to ensure the light intensity density.

[0048] The heat conversion unit absorbs focused solar energy and converts it into heat. Its built-in temperature sensor monitors temperature changes and feeds back to the intelligent control module to determine whether the light-to-heat conversion process is stable and efficient and the focusing effect is good.

[0049] The heat storage unit receives the heat energy transmitted by the heat conversion unit, absorbs heat and stores the heat energy, and continuously monitors the heat energy storage amount and temperature changes. When the intelligent control module issues a heating instruction, the heat storage unit supplies heat to the electrochemical energy storage module to assist the electrochemical reaction and provide basic heat energy for the heat exchange and energy supply module.

[0050] During off-peak hours, the electrochemical energy storage module's battery management unit initiates the charging process based on instructions from the intelligent control module. It calculates the charging current based on information such as the off-peak electricity price, the battery pack's current remaining capacity, and the duration of the off-peak period. The charging current is adjusted as the charging process progresses. When the current approaches the rated capacity, further adjustments are made based on the battery pack's health status to avoid overcharging.

[0051] During the energy supply period, the battery pack discharges according to the instructions of the intelligent control module. The discharge current and voltage are dynamically adjusted by the battery management unit according to the load demand and the current status of the battery. The battery pack's power, voltage, current and other parameters are monitored in real time and fed back to the intelligent control module.

[0052] The temperature sensor in the thermal management unit monitors the battery pack temperature in real time. If the temperature deviates from the appropriate operating temperature range, it initiates cooling or heating measures to adjust the temperature, ensuring that the battery pack temperature remains stable within the appropriate range.

[0053] The intelligent control module coordinates the collaborative work of the various modules in the system, formulates an energy allocation strategy based on energy demand and the energy storage status of each module, and ensures that the overall system operates in the optimal state. By executing the thermal-electric bidirectional feedback regulation algorithm, when the temperature of the electrochemical energy storage module is higher than the appropriate upper limit, the solar thermal module is controlled to reduce heat output and adjust the focusing area of the concentrating unit; when the temperature is lower than the appropriate lower limit and there is a demand for electricity, if the thermal energy of the solar thermal module meets the conditions, the electronically controlled heat-assisted power generation mode is activated, the solar thermal module is controlled to provide heat-assisted power generation and the concentrating unit is adjusted to increase the focusing area;

[0054] The heat exchanger receives energy from the solar thermal module and the electrochemical energy storage module, converts the input energy into output heat energy according to different load requirements, and provides adaptive energy;

[0055] During the system's energy supply process, when the energy output of the solar thermal module and the electrochemical energy storage module fluctuates, the energy buffer unit absorbs and stores excess heat energy, and releases and supplements it when heat energy is insufficient, ensuring the smooth output of heat energy from the heat exchanger and maintaining power supply stability.

[0056] In summary, this embodiment describes in detail the operation process of a valley electrochemical heat storage energy supply system based on photothermal coupling, fully demonstrating the close synergy between the modules and the key regulation function of the intelligent control module, and achieving stable and reliable energy supply under different working conditions.

[0057] Example 2

[0058] This example focuses on the practical application of the photovoltaic-thermal coupled valley electrochemical heat storage and energy supply system in the industrial field. It elaborates on the operating mechanism and synergy of each module of the system in an industrial production environment, and demonstrates how it can effectively integrate photovoltaic and valley electricity energy to meet the complex and changing energy needs of industry.

[0059] In industrial applications, the focusing unit of the photothermal module will accurately focus the scattered sunlight onto the heat conversion unit to ensure the high efficiency of photothermal conversion. The heat conversion unit will quickly convert the absorbed light energy into heat energy and transmit it to the heat storage unit in real time. On the one hand, the heat storage unit stores heat. On the other hand, according to the instructions of the intelligent control module, when industrial production needs it, such as chemical reaction heating, metal processing preheating, etc., it stably outputs heat energy to the heat exchange and energy supply module, providing a basic heat source for industrial production and ensuring that the temperature of the production process meets the requirements.

[0060] During off-peak hours, the battery management unit of the electrochemical energy storage module accurately calculates the charging current and voltage based on the scheduling of the intelligent control module, the off-peak electricity price, and the real-time power status of the battery pack, achieving efficient charging and storing electrical energy for backup. During peak industrial production electricity consumption or when the solar thermal module is insufficient, the battery pack discharges according to instructions to power production equipment and maintain production continuity. The thermal management unit monitors the battery temperature in real time. When the temperature deviates from the appropriate range, it quickly takes heat dissipation or heating measures to prevent battery performance from being affected by temperature, ensuring that the battery is always in good working condition and guaranteeing the stable supply and storage of electricity.

[0061] The intelligent control module comprehensively collects energy demand information on the industrial production line, thermal energy storage and conversion data of the solar thermal module, power and temperature conditions of the electrochemical energy storage module, etc. Through the built-in thermal-electric bidirectional feedback regulation algorithm, during the production process, the energy output of the solar thermal module and the electrochemical energy storage module are dynamically allocated according to real-time energy demand. When the demand for thermal energy in the production link increases, the intelligent control module instructs the solar thermal module to increase heat output. If the solar thermal energy is insufficient, the electrochemical energy storage module is coordinated to perform electrical-thermal energy conversion to supplement it. When the demand for electricity is urgent, the battery pack is prioritized for reasonable discharge, and the energy distribution strategy of the solar thermal module is adjusted at the same time to ensure the accurate, stable and efficient energy supply in all links of industrial production.

[0062] The heat exchange and energy supply module uses a heat exchanger to accurately convert the energy from the photothermal module and the electrochemical energy storage module into an appropriate form of thermal energy output according to the temperature and energy requirements of different industrial production processes. The energy buffer unit quickly releases or stores energy when the energy supply fluctuates to ensure the stability of the heat energy output of the heat exchanger, avoid interference with industrial production due to energy fluctuations, and maintain efficient and stable production operations.

[0063] This embodiment fully demonstrates the performance of the valley electrochemical heat storage and energy supply system based on photothermal coupling in the industrial field. The modules work closely together to achieve the deep integration and efficient utilization of photothermal and valley electricity energy in industrial production, effectively respond to the complex energy needs of industry, and significantly improve the stability and reliability of energy supply.

[0064] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A valley electrochemical heat storage and energy supply system based on photothermal coupling, characterized in that: The components of the system include: photothermal module, electrochemical energy storage module, intelligent control module, heat exchange and energy supply module; The photothermal module includes a light-collecting unit, a heat conversion unit, and a heat storage unit for collecting solar energy and converting it into thermal energy for storage; The electrochemical energy storage module includes a battery pack, a battery management unit, and a thermal management unit, which are responsible for storing and releasing electrical energy, while also monitoring and regulating battery temperature; The intelligent control module includes a thermal control electric unit and an electrically controlled heat-assisted power generation unit. It uses a thermal-electric bidirectional feedback regulation algorithm to dynamically adjust the heat output and concentration parameters of the solar thermal module according to the temperature state and power demand of the electrochemical energy storage module. The thermal-electric bidirectional feedback regulation algorithm utilizes the real-time temperature T es , set the lower limit of the suitable working temperature range to T min , the upper limit is T max ; When T es >T max When the heat output is reduced, the photothermal module is controlled to reduce the heat output and the focusing area S of the focusing unit is adjusted to follow the Focusing is performed, where S0 is the initial focusing area, by reducing the focusing area and setting the focusing area to reduce the safety value S aq And S≤S aq When maintaining the focusing area S aq , reduce the heat transferred from the solar thermal module to the electrochemical energy storage module to prevent the battery from overheating; When T es <T min And the power demand is E d When the electric control thermal auxiliary power generation mode is started, the thermal energy Q stored in the solar thermal module is th , when Q th ≥E d ×k, k is the heat-electricity conversion coefficient. The intelligent control module controls the solar thermal module to supply heat to the electrochemical energy storage module to assist in power generation. At the same time, the focusing unit is adjusted to increase the focusing area S. Concentrate light to capture more solar energy and convert it into thermal energy to meet the demand for additional electricity; The heat exchange and energy supply module includes a heat exchanger and an energy buffer unit, has an energy buffer function, and provides adaptive energy according to different load requirements.

2. The valley electrochemical heat storage and energy supply system based on photothermal coupling according to claim 1 is characterized in that: The photothermal module includes a light collecting unit, a heat conversion unit and a heat storage unit, wherein: The focusing unit is composed of a focusing lens array, which adjusts the angle in real time according to the control instructions transmitted by the intelligent control module to focus the scattered sunlight onto the heat conversion unit; The heat conversion unit collects and focuses solar energy, converts the light energy into heat energy, and transmits the heat energy to the heat storage unit in real time; The heat storage unit temporarily stores the heat energy generated by the heat conversion unit, on the one hand waiting for instructions from the intelligent control module to supply heat to the electrochemical energy storage module as needed to assist the electrochemical reaction; on the other hand continuously providing basic heat energy for the heat exchange and energy supply module.

3. The valley electrochemical heat storage and energy supply system based on photothermal coupling according to claim 1 is characterized in that: The electrochemical energy storage module includes a battery pack, a battery management unit and a thermal management unit, wherein: The battery pack is charged according to the current and voltage parameters regulated by the battery management unit, stores electrical energy, and discharges according to instructions when supplying energy; The battery management unit monitors the battery pack power, voltage, and current parameters in real time, communicates bidirectionally with the intelligent control module, receives control instructions to optimize the charge and discharge strategy, and feeds back battery status information. The thermal management unit has a built-in temperature sensor. When the battery pack temperature deviates from the appropriate operating temperature range {T min , T max }, a temperature warning is sent to the intelligent control module in real time, and cooling and heating measures are started according to the instructions to adjust the battery temperature, and heat exchange and cooperative temperature control are carried out with the solar thermal module.

4. The valley electrochemical heat storage and energy supply system based on photothermal coupling according to claim 3 is characterized in that: The thermal management unit of the electrochemical energy storage module uses the heat Q transferred to the battery pack by the photothermal module to control the temperature in cooperation with the photothermal module. p , when the battery pack temperature T es When the temperature deviates from the suitable range, according to the formula Calculate the battery pack temperature change ΔT to accurately control the heat dissipation and heating measures to ensure that the battery pack temperature is stable in an appropriate range, where P s is the heat dissipation power of the thermal management unit itself, c b is the specific heat capacity of the battery pack, m b is the mass of the battery pack, and t1 is the regulation time of the battery pack.

5. The valley electrochemical heat storage and energy supply system based on photothermal coupling according to claim 3 is characterized in that: The battery management unit of the electrochemical energy storage module uses the electricity price C during the off-peak period to regulate the charging of the battery pack. g and the current remaining battery charge E r , according to the formula Calculate the charging current I, where t is the valley time, E c The rated capacity of the battery pack is used to optimize the charging cost and give priority to fully charging the battery during the valley phase. r ≈E c When the battery is in good condition, Adjust the charging current, where I0 is the initially set charging current, to avoid damage to the battery due to overcharging.

6. The valley electrochemical heat storage and energy supply system based on photothermal coupling according to claim 1 is characterized in that: The heat exchange and functional module includes a heat exchanger and an energy buffer unit, wherein: One end of the heat exchanger is connected to the thermal storage unit of the photothermal module and the electrochemical energy storage module. When faced with different load requirements, the heat exchanger converts input energy into output heat energy according to the instructions of the intelligent control module. During the system power supply process, when the energy output of the photothermal module and the electrochemical energy storage module fluctuates, the energy buffer unit maintains the stability of the power supply, that is, it absorbs and stores heat energy when it is in excess, and releases and supplements heat energy when it is insufficient, thereby ensuring the stability of the heat energy output of the heat exchanger.

7. The valley electrochemical heat storage and energy supply system based on photothermal coupling according to claim 6 is characterized in that: The heat exchange and function module adopts a heat exchanger, which is based on the real-time temperature demand T fed back by the load end. r and the required energy power P r To control the output, the heat exchange efficiency of the heat exchanger is η, when the heat energy provided by the photothermal module is Q th , the electric energy provided by the electrochemical energy storage module is E es , satisfying Q th ×η+E es ≥P r When the energy is supplied normally, if it is not satisfied, the intelligent control module coordinates the module to increase the energy output to ensure stable energy supply, and in the energy supply process, the energy buffer unit Energy storage, where E b Reserve energy for the buffer unit, E max It is the maximum energy storage capacity of the buffer unit to cope with energy supply fluctuations.

8. The valley electrochemical heat storage and energy supply system based on photothermal coupling according to claim 1 is characterized in that: The intelligent control module includes a thermal control electric unit and an electric control heat auxiliary power generation unit, wherein: When the temperature of the electrochemical energy storage module is high and affects the energy storage performance, the intelligent control module starts the thermal control unit to adjust the heat output of the photothermal module to reduce the battery temperature and protect the battery performance; When the demand for electricity is at its peak and the electrochemical energy storage is insufficient, the electrically controlled thermal auxiliary power generation unit utilizes the thermal energy stored in the photothermal module to perform auxiliary power generation, thereby realizing intelligent complementarity between thermal energy and electrical energy.

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