A temperature control method, system, terminal and medium

Abstract

This application relates to the field of temperature control in energy storage systems, providing a temperature control method, system, terminal, and medium. The method includes: monitoring the temperature of multiple energy storage units within the energy storage system to obtain the highest and lowest temperature values ​​corresponding to each energy storage unit; comparing the highest and lowest temperature values ​​with set temperature control reference data of a temperature regulating device to obtain a comparison result; and adjusting the temperature regulating device to a target operating state based on the comparison result, the target operating state including a shutdown state, an alarm state, and a temperature control adjustment state. This solution can improve temperature control accuracy, reduce power consumption during temperature control, and increase battery life.

Description

Technical Field

[0001] This application belongs to the field of temperature control for energy storage systems, and particularly relates to a temperature control method, system, terminal and medium. Background Technology

[0002] In recent years, energy storage products have developed rapidly and have been widely used in industrial production, such as peak shaving and valley filling, photovoltaic-energy storage integration, dynamic capacity expansion, demand control, backup power, and power trading. Temperature control of these energy storage products is essential. Current technologies achieve temperature control by monitoring the real-time temperature of the battery and then adjusting the status of air conditioners or fans. However, existing technologies suffer from low precision in temperature control, resulting in poor temperature control performance, reduced battery life, and high power consumption during operation. Summary of the Invention

[0003] This application provides a temperature control method, system, terminal, and medium to solve the problems of low temperature control accuracy, high power consumption during temperature control, and reduced battery life in the prior art.

[0004] A first aspect of this application provides a temperature control method, including:

[0005] Temperature monitoring is performed on multiple energy storage units contained in the energy storage system to obtain the highest and lowest temperature values ​​corresponding to the energy storage units in the energy storage system.

[0006] The highest and lowest temperature values ​​are compared with the set temperature control reference data of the temperature regulating device to obtain a comparison result. The set temperature control reference data includes a lower limit value for low temperature, an upper limit value for high temperature, an extreme temperature value, an upper limit value for temperature difference corresponding to the energy storage unit in the energy storage system, and / or an extreme temperature difference value corresponding to the energy storage unit in the energy storage system. The comparison result includes a first comparison result between the lowest temperature value and the lower limit value for low temperature, a second comparison result between the highest temperature value and the upper limit value for high temperature, a third comparison result between the highest temperature value and the extreme temperature value, a fourth comparison result between the difference between the highest and lowest temperature values ​​and the upper limit value for temperature difference, and / or a fifth comparison result between the difference between the highest and lowest temperature values ​​and the extreme temperature difference value. The upper limit value for high temperature is less than the extreme temperature value, and the upper limit value for temperature difference is less than the extreme temperature difference value.

[0007] Based on the comparison results, the temperature control device is adjusted to the target operating state, which includes the off state, alarm state, and temperature control adjustment state.

[0008] A second aspect of this application provides a temperature control system, including:

[0009] A temperature monitoring module is used to monitor the temperature of multiple energy storage units contained in the energy storage system, and to obtain the highest and lowest temperature values ​​corresponding to the energy storage units in the energy storage system.

[0010] A comparison module is used to compare the highest temperature value and the lowest temperature value with the set temperature control reference data of the temperature regulating device to obtain a comparison result. The set temperature control reference data includes a lower limit value for low temperature, an upper limit value for high temperature, an extreme temperature value, an upper limit value for temperature difference corresponding to the energy storage unit in the energy storage system, and / or an extreme temperature difference value corresponding to the energy storage unit in the energy storage system. The comparison result includes a first comparison result between the lowest temperature value and the lower limit value for low temperature, a second comparison result between the highest temperature value and the upper limit value for high temperature, a third comparison result between the highest temperature value and the extreme temperature value, a fourth comparison result between the difference between the highest temperature value and the lowest temperature value and the upper limit value for temperature difference, and / or a fifth comparison result between the difference between the highest temperature value and the lowest temperature value and the extreme temperature difference value. The upper limit value for high temperature is less than the extreme temperature value, and the upper limit value for temperature difference is less than the extreme temperature difference value.

[0011] The adjustment module is used to adjust the temperature regulation device to a target operating state based on the comparison result. The target operating state includes a closed state, an alarm state, and a temperature control adjustment state.

[0012] A third aspect of this application provides a terminal including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method described in the first aspect.

[0013] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method described in the first aspect.

[0014] The fifth aspect of this application provides a computer program product that, when run on a terminal, causes the terminal to perform the steps of the method described in the first aspect.

[0015] As can be seen from the above, this application monitors the temperature of the energy storage unit, compares the obtained highest temperature value, lowest temperature value, and the maximum temperature difference between the two with multiple more precise set temperature control reference data, adjusts the state of the temperature regulation device based on the comparison results, and issues an alarm when the temperature is abnormal. This method improves the accuracy of temperature control, thereby increasing the service life of the energy storage unit, and reduces the power consumption of the temperature control device by setting the state of the temperature regulation device based on the comparison results. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a flowchart of a temperature control method provided in an embodiment of this application. Figure 1 ;

[0018] Figure 2 This is a flowchart of a temperature control method provided in an embodiment of this application. Figure 2 ;

[0019] Figure 3 This is a structural diagram of a temperature control system provided in an embodiment of this application;

[0020] Figure 4 This is a structural diagram of a terminal provided in an embodiment of this application. Detailed Implementation

[0021] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0022] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0023] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrases "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0026] In specific implementations, the terminals described in the embodiments of this application include, but are not limited to, other portable devices such as mobile phones, laptop computers, or tablet computers with touch-sensitive surfaces (e.g., touchscreen displays and / or touchpads). It should also be understood that in some embodiments, the device is not a portable communication device, but a desktop computer with touch-sensitive surfaces (e.g., touchscreen displays and / or touchpads).

[0027] The following discussion describes terminals that include displays and touch-sensitive surfaces. However, it should be understood that terminals may include one or more other physical user interface devices such as physical keyboards, mice, and / or joysticks.

[0028] The terminal supports a variety of applications, such as one or more of the following: drawing applications, presentation applications, word processing applications, website creation applications, disc burning applications, spreadsheet applications, game applications, telephone applications, video conferencing applications, email applications, instant messaging applications, exercise support applications, photo management applications, digital camera applications, digital camcorder applications, web browsing applications, digital music player applications, and / or digital video player applications.

[0029] Various applications that can run on a terminal can use at least one common physical user interface device, such as a touch-sensitive surface. One or more functions of the touch-sensitive surface and the corresponding information displayed on the terminal can be adjusted and / or changed between and / or within applications. In this way, the terminal's common physical architecture (e.g., the touch-sensitive surface) can support various applications with user interfaces that are intuitive and transparent to the user.

[0030] It should be understood that the sequence number of each step in this embodiment does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of this application embodiment.

[0031] To illustrate the technical solution described in this application, specific embodiments are provided below.

[0032] See Figure 1 , Figure 1 This is a flowchart of a temperature control method provided in an embodiment of this application. Figure 1 As shown, a temperature control method includes the following steps:

[0033] Step 101: Monitor the temperature of multiple energy storage units in the energy storage system to obtain the highest and lowest temperature values ​​corresponding to the energy storage units in the energy storage system.

[0034] Specifically, the energy storage system includes one or more battery clusters, each battery cluster including multiple battery packs and / or battery modules, and the energy storage unit is the battery pack or the battery module. The energy storage system is equipped with a main control system, which is the core system of the energy storage system, enabling the control and scheduling of the temperature, energy, and safety of the energy storage system. The main control system includes multiple subsystems such as a BMS system, a temperature control system, a PCS system, a fire protection system, and an environmental monitoring system.

[0035] The battery packs and / or battery modules are managed by the BMS system, which manages a limited number of battery packs and / or battery modules. That is, the main control system contains one or more BMS systems. The BMS system is a battery management system, primarily used to monitor and protect the batteries, and to send real-time data such as battery temperature, current, voltage, charge / discharge status, and the status of the fan on the battery to the main control system.

[0036] The temperature control system includes an air conditioner, an auxiliary heating device, sensors, a fan, and a computing and storage unit. The sensors include temperature sensors and humidity sensors. The temperature sensors are used to monitor the ambient temperature, the internal air temperature of the energy storage system, the evaporator temperature of the air conditioner, the condenser temperature of the air conditioner, the temperature of the heating device, and the temperature of the energy storage unit. Specifically, the temperature sensors include an ambient temperature sensor, an internal air temperature sensor of the energy storage system, an evaporator temperature sensor of the air conditioner, a condenser temperature sensor of the air conditioner, a temperature sensor of the heating device, and a temperature sensor of the energy storage unit.

[0037] Furthermore, the energy storage unit is equipped with at least two temperature sensors to acquire the highest and lowest temperature values ​​of the energy storage unit. At least one of the other types of temperature sensors is included. When the number of temperature sensors is greater than one, the arithmetic mean of all temperature sensors is taken as the final monitored temperature result. For example, if the air conditioner has three evaporator temperature sensors, three temperature values ​​are acquired, and the arithmetic mean of these three temperature values ​​is taken as the evaporator temperature of the air conditioner.

[0038] Specifically, the humidity sensors are installed both inside and outside the energy storage system to monitor the humidity inside and outside the system. If there are more than one humidity sensor in the same location, the arithmetic mean of all the humidity sensors is taken as the final humidity result. Except for the temperature sensor of the energy storage unit, other temperature sensors and the humidity sensor send the monitored data to the main control system.

[0039] Specifically, the computing and storage unit can calculate the monitored data in real time during the operation of the energy storage system, or the main control system can call the existing data in the computing and storage unit. The existing data in the computing and storage unit includes the energy storage system's different operating power, thermal power consumption under SOC and charge / discharge states, solar radiation heat load under corresponding time and environmental information, heat or cooling load under corresponding ambient temperature conditions, air conditioning cooling or heating capacity under corresponding conditions, fan speed list, and set temperature control reference data, etc.

[0040] The PCS system is a power system for bidirectional DC and AC conversion of the energy storage system, realizing the conversion of DC and AC power and the power regulation of the energy storage system.

[0041] The fire protection system and the environmental protection system are the safety systems of the energy storage system, used to ensure the safety of the energy storage system.

[0042] Specifically, after the temperature sensor of the energy storage unit monitors the temperature, it sends the highest and lowest temperature values ​​of the energy storage unit to the BMS system. The BMS system then obtains the highest and lowest temperature values ​​for each energy storage unit. The BMS system sends the highest and lowest temperature values ​​of each energy storage unit to the main control system. The main control system determines the highest and lowest temperature values ​​of the energy storage system from the highest and lowest temperature values ​​of all the energy storage units obtained, and identifies the energy storage unit corresponding to each of the two temperature values. After determining the highest and lowest temperature values, the main control system calculates the maximum temperature difference value of the energy storage system by subtracting the highest and lowest temperature values.

[0043] Specifically, the temperature sensor of the energy storage unit monitors and updates the temperature value in real time and sends it to the BMS system in real time. Then, the BMS system sends the temperature value to the main control system.

[0044] Step 102: Compare the highest temperature value and the lowest temperature value with the set temperature control reference data of the temperature regulating device to obtain the comparison result.

[0045] Specifically, the set temperature control reference data includes a lower limit value for low temperature, an upper limit value for high temperature, an extreme temperature value, an upper limit value for the temperature difference corresponding to the energy storage unit in the energy storage system, and / or an extreme temperature difference value corresponding to the energy storage unit in the energy storage system. The comparison results include a first comparison result between the lowest temperature value and the lower limit value for low temperature, a second comparison result between the highest temperature value and the upper limit value for high temperature, a third comparison result between the highest temperature value and the extreme temperature value, a fourth comparison result between the difference between the highest temperature value and the lowest temperature value and the upper limit value for temperature difference, and / or a fifth comparison result between the difference between the highest temperature value and the lowest temperature value and the extreme temperature difference value. The upper limit value for high temperature is less than the extreme temperature value, and the upper limit value for temperature difference is less than the extreme temperature difference value.

[0046] Furthermore, the temperature values ​​and temperature differences are sorted as follows: lower limit of low temperature < upper limit of high temperature < extreme temperature value, and the upper limit of temperature difference corresponding to the energy storage unit in the energy storage system < extreme temperature difference value.

[0047] Specifically, after determining the highest and lowest temperature values ​​of the energy storage system from the highest and lowest temperature values ​​obtained from all energy storage units, the main control system calculates the difference between the highest and lowest temperature values. The main control system then calls the set temperature control reference data in the calculation and storage unit, comparing the lowest temperature value with the lower low-temperature limit, the highest temperature value with the upper high-temperature limit, the highest temperature value with the extreme temperature value, the difference between the highest and lowest temperature values ​​with the upper temperature difference limit, and the difference between the highest and lowest temperature values ​​with the extreme temperature difference value, to obtain the comparison result. Based on the comparison result, the main control system sends instructions to its subsystems. The set temperature control reference data can be set as needed and stored in the calculation and storage unit.

[0048] Step 103: Based on the comparison results, adjust the temperature regulating device to the target operating state, which includes the off state, alarm state, and temperature control regulating state.

[0049] Specifically, the temperature regulating device includes a first device and a second device, wherein the first device is the air conditioner and the second device is the fan. The temperature regulation state of the first device includes a cooling mode state and a heating mode state, and the temperature regulation state of the second device includes a fan speed regulation state.

[0050] If the air conditioner only has a cooling mode, an additional heating device is added to the air conditioner so that it also has a heating mode.

[0051] The fan is an adjustable-speed fan, optionally a circulating fan, and is installed on the energy storage unit, i.e., on the battery pack and / or battery module. A fan speed list is stored in the calculation and storage unit, storing data including the fan speed, corresponding airflow, and heat dissipation at different speeds. The fan has multiple speed settings, each corresponding to a specific speed and airflow. Optionally, the speed difference between two adjacent speed settings is 5%-10% of the maximum speed; this speed difference can be adjusted according to actual needs and is not limited to the aforementioned range.

[0052] Specifically, when the energy storage system starts operating, the wind turbine starts working. If the energy storage system is operating for the first time, the wind turbine operates at a set initial speed; if the energy storage system is not operating for the first time, the wind turbine operates at a set initial speed or at the speed at which the wind turbine operated the previous day when the energy storage system was stopped. The wind turbine operating speed is configured according to requirements.

[0053] Specifically, for the air conditioner, i.e. the first device: based on the first comparison result and the second comparison result, the first device is adjusted to the off state; or, based on the first comparison result, the first device is adjusted to the heating mode state; or, based on the second comparison result, the first device is adjusted to the cooling mode state; or, based on the third comparison result, the first device is adjusted to the alarm state.

[0054] Further, if the first comparison result is that the lowest temperature value is greater than the sum of the lower low temperature limit and the heating hysteresis value, and the second comparison result is that the highest temperature value is less than the difference between the upper high temperature limit and the cooling hysteresis value, the first device is adjusted to the off state; or, if the first comparison result is that the lowest temperature value is less than or equal to the lower low temperature limit, the first device is adjusted to the heating mode state; or, if the second comparison result is that the highest temperature value is greater than or equal to the upper high temperature limit, the first device is adjusted to the cooling mode state; or, if the third comparison result is that the highest temperature value is greater than the extreme temperature value, the first device is adjusted to the alarm state.

[0055] Specifically, the main control system compares the obtained highest and lowest temperature values ​​with the set temperature control reference data stored in the calculation and storage unit to obtain the comparison result. Based on the comparison result, the main control system sends the instruction to the temperature control system. This part involves the main control system sending the instruction to the temperature control system to adjust the state of the air conditioner in the temperature control system. When the minimum temperature value > the low-temperature limit + the heating hysteresis value and the maximum temperature value < the high-temperature limit - the cooling hysteresis value, the air conditioner is adjusted to the off state; when the minimum temperature value ≤ the low-temperature limit, the air conditioner is adjusted to the heating mode; when the maximum temperature value ≥ the high-temperature limit, the air conditioner is adjusted to the cooling mode; when the maximum temperature value > the extreme temperature value, the air conditioner is adjusted to the alarm state. That is, if the air conditioner is an inverter air conditioner, the alarm state means that the fan and compressor of the inverter air conditioner are set to run at maximum speed; if the air conditioner is a non-inverter air conditioner, the alarm state means that the air conditioner is run at maximum operating efficiency. The heating hysteresis value and the cooling hysteresis value are set temperature range values ​​stored in the calculation and storage unit, generally 1-5℃, but can be adjusted to values ​​outside this range as needed. The low-temperature limit < the low-temperature limit + the heating hysteresis value < the high-temperature upper limit - the cooling hysteresis value < the high-temperature upper limit < the extreme temperature value. This more precise temperature division improves the accuracy of temperature control.

[0056] Specifically, when the highest temperature value exceeds the extreme temperature value, the main control system also sends a command to the PCS system to reduce the operating power of the energy storage system. Typically, the power reduction is 5%-10% per instance, and the interval between two power reductions is generally 1-10 minutes. The magnitude and duration of each power reduction can be adjusted according to actual conditions and are not limited to the above ranges. This power reduction operation protects the energy storage system, preventing excessively high temperatures from affecting its operating efficiency and safety.

[0057] Specifically, the energy storage unit is equipped with an auxiliary heating device, that is, the battery pack and / or battery module is equipped with an auxiliary heating device. The auxiliary heating device is a heating film, heating wire, or heater that is attached to the battery pack and / or battery module, and the auxiliary heating device may be one or a combination of the above.

[0058] Furthermore, if the ambient cooling load is detected to exceed the heating capacity of the first device, the auxiliary heating device is controlled to start heating. The cooling load is calculated from the ambient temperature, the internal air temperature of the energy storage system, the internal air humidity of the energy storage system, and the external air humidity of the energy storage system. This calculation can be performed by the main control system, or the main control system can call the calculation and storage unit to perform the calculation and then send the result to the main control system.

[0059] Specifically, when the ambient cooling load is detected to exceed the heating capacity of the air conditioner, the main control system sends a command to the temperature control system to control the auxiliary heating device to start heating.

[0060] Specifically, for the fan, i.e. the second device: based on the fourth comparison result, the second device is adjusted to the wind speed regulation state; based on the fifth comparison result, the second device is adjusted to the alarm state.

[0061] Furthermore, if the difference between the highest temperature value and the lowest temperature value is greater than or equal to the upper limit of the temperature difference, the second device is adjusted to the wind speed adjustment state. In the wind speed adjustment state, the second device sequentially adjusts the wind speed level according to the set adjustment amount until the difference is less than the upper limit of the temperature difference; or, if the difference between the highest temperature value and the lowest temperature value is greater than or equal to the extreme temperature difference value, the second device is adjusted to the alarm state, and the energy storage system is controlled to reduce the system operating power.

[0062] After selecting the highest and lowest temperature values, the main control system calculates the maximum temperature difference of the energy storage system by subtracting the highest and lowest temperature values, and determines the energy storage unit containing the highest and lowest temperature values. When the maximum temperature difference is greater than or equal to the upper limit of the temperature difference, the second device is adjusted to the wind speed regulation state, that is, the speed of the fan on the energy storage unit containing the highest and lowest temperature values ​​is adjusted. The speed of the fan on the energy storage unit containing the highest temperature value is increased, and the speed of the fan on the energy storage unit containing the lowest temperature value is decreased, while the speeds of other fans remain unchanged. When adjusting the speed, one level is adjusted each time, and the adjustment interval can be set to 1-10 minutes. If the fan on the energy storage unit containing the highest temperature value is already at its highest speed during the adjustment process, it remains unchanged; if the fan on the energy storage unit containing the lowest temperature value is already at its lowest speed, the fan is turned off and put into standby mode. The speed adjustment continues until the maximum temperature difference is less than the upper limit of the temperature difference.

[0063] Furthermore, when the main control system calls the fan for temperature control, it acquires the highest and lowest temperature values ​​and the maximum temperature difference value in real time, determines the energy storage unit where the highest and lowest temperature values ​​are located, and adjusts the fan speed on the energy storage unit. When the maximum temperature difference value of the energy storage unit is less than the upper limit of the temperature difference value, it acquires new highest and lowest temperature values ​​and the maximum temperature difference value again, and adjusts the fan speed according to the actual situation. This process ensures that the temperature of the energy storage unit is basically at a relatively close value, thereby improving the service life of the energy storage unit.

[0064] Specifically, the computing and storage unit also stores the fan shutdown temperature difference value. When the maximum temperature difference value is less than or equal to the fan shutdown temperature difference value, the corresponding fan is shut down to reduce the heat consumption of the fan during operation.

[0065] Specifically, when the maximum temperature difference is greater than or equal to the extreme temperature difference, the main control system sends a command to the temperature control system to adjust the fan in the temperature control system to the alarm state, that is, to adjust the speed of the fan on the energy storage unit where the highest and lowest temperatures are located. Simultaneously, the main control system also sends a command to the PCS system to reduce the operating power of the energy storage system. Generally, the power reduction is 5%-10% per instance, and the interval between two power reductions is generally 1-10 minutes. The single power reduction magnitude and duration can be adjusted according to actual conditions and are not limited to the above ranges. This power reduction operation protects the energy storage system, preventing excessive temperature differences from affecting the service life of the energy storage unit and the overall service life of the energy storage system.

[0066] Specifically, the air conditioner includes the evaporator and the condenser, that is, the first device includes the evaporator and the condenser, and the evaporator temperature and the condenser temperature are monitored by the evaporator temperature sensor and the condenser temperature sensor.

[0067] Specifically, the method acquires a first temperature of the evaporator and a second temperature of the condenser. When the first temperature is less than or equal to the evaporator's safe temperature and the second temperature is greater than or equal to the condenser's safe temperature, the first device is adjusted to the off state, the alarm device is controlled to issue an over-temperature alarm, and / or the energy storage system is controlled to reduce its operating power. The evaporator's safe temperature and the condenser's safe temperature are stored in the calculation and storage unit. When the first temperature is less than or equal to the evaporator's safe temperature and the second temperature is greater than or equal to the condenser's safe temperature, the air conditioner is adjusted to the off state, the alarm device sends an over-temperature alarm to the main control system, and if the energy storage system temperature is high and cooling is still required, the main control system sends a command to the PCS system to reduce the operating power of the energy storage system. Generally, the single power reduction is 5%-10%, and the interval between two power reductions is generally 1-10 minutes. The single power reduction magnitude and duration can be adjusted according to actual conditions and are not limited to the above range. This method protects the first device, i.e., the air conditioner, and simultaneously prevents the air conditioner from malfunctioning in the cooling mode, leading to an uncontrolled overheating of the energy storage system.

[0068] Further, when the first temperature is less than or equal to the evaporator's safe temperature and the second temperature is greater than or equal to the condenser's safe temperature, after adjusting the first device to the off state, controlling the alarm device to trigger an over-temperature alarm, and / or controlling the energy storage system to reduce its operating power, the third temperature of the evaporator and the fourth temperature of the condenser are obtained. When the third temperature is greater than or equal to the sum of the evaporator's safe temperature and the evaporator hysteresis value, and the fourth temperature is less than or equal to the condenser's safe temperature and the condenser hysteresis value, if the first device is in the off state, then the first device is adjusted from the off state to the running state. The evaporator hysteresis value and the condenser hysteresis value are set temperature range values ​​stored in the calculation and storage unit, generally 1-5℃, but can be adjusted to values ​​outside this range as needed. When the air conditioner is in the off state, after the energy storage system performs a power reduction operation, if the third temperature ≥ the evaporator's safe temperature + the evaporator hysteresis value and the fourth temperature ≤ the condenser's safe temperature + the condenser hysteresis value, the air conditioner resumes operation, that is, the air conditioner is adjusted to the cooling mode.

[0069] In this embodiment, the temperature of the energy storage unit is first monitored to obtain the highest temperature value, lowest temperature value, and maximum temperature difference value. Then, this data is compared with multiple more precisely defined temperature control reference data. Finally, the state of the temperature regulation device is adjusted based on the comparison results, and an alarm is issued when the temperature is abnormal. This method improves the accuracy of temperature control, thereby increasing the service life of the energy storage unit. By setting the state of the temperature regulation device based on the comparison results, the power consumption of the temperature control device during operation is reduced.

[0070] In a specific embodiment, the temperature regulating device includes a first device and a second device, wherein the temperature regulation state of the first device includes a cooling mode state. The first device is an air conditioner, and the second device is a fan.

[0071] See Figure 2 , Figure 2 This is a flowchart of a temperature control method provided in an embodiment of this application. Figure 2 .like Figure 2 As shown, a temperature control method includes the following steps:

[0072] Step 201: Obtain the maximum value of the daily heat load of the energy storage system and the maximum cooling capacity of the first device.

[0073] Specifically, the temperature control system obtains the daily power dispatch plan or preset charge / discharge plan of the energy storage system from the energy storage system. The energy storage system sets a preset charge / discharge plan based on local conditions during operation, typically limiting the maximum operating power and charge / discharge times. If the energy storage system participates in grid dispatch or electricity sales schemes on a given day, it operates according to the actual daily power dispatch plan. If it does not participate, it operates according to the preset charge / discharge plan.

[0074] Specifically, the total heat dissipation curve of all energy storage units of the energy storage system is obtained according to the daily power dispatch plan or preset charge and discharge plan; the temperature control system obtains the ambient temperature, internal air temperature and internal air humidity of the energy storage system on that day, and calculates the cold leakage curve of the cabinet or box of the energy storage system on that day; the temperature control system obtains the latitude and longitude of the energy storage system, the date and weather of that day, and calculates the solar radiation curve of that day; the temperature control system obtains the total heat dissipation curve of the fans running on all energy storage units from the calculation and storage unit. At a certain time point, the heat load at that time point = the total heat dissipation of all energy storage units of the energy storage system at that time point + the cold leakage of the cabinet or box of the energy storage system at that time point + the solar radiation at that time point + the total heat dissipation of the second device at that time point, and the heat load at that time point is obtained. By acquiring the data from the aforementioned curves, the total thermal power consumption of all energy storage units in the energy storage system, the cold leakage of the energy storage system's cabinet or enclosure, the solar radiation, and the total thermal power consumption of the second device at each time point are summed to obtain the daily heat load curve of the energy storage system. The daily heat load curve consists of the heat load of the energy storage system at each time point during its daily operation.

[0075] The maximum value of the daily heat load is obtained based on the daily heat load curve. The maximum value of the daily heat load is the highest value of the heat load of the energy storage system during the operation of the day.

[0076] Step 202: If the maximum value of the daily heat load is greater than or equal to a preset percentage of the maximum cooling capacity, control the first device to enter the cooling mode state before the energy storage system starts operating, according to the daily pre-cooling time.

[0077] Specifically, when the maximum daily heat load is greater than or equal to a preset percentage of the maximum cooling capacity of the air conditioner, the air conditioner needs to be switched to the cooling mode before the energy storage system starts operating, in order to cool the energy storage system in advance. The preset percentage of the maximum cooling capacity of the air conditioner is set as needed, generally within the range of 60%-85%, and preferably 70%.

[0078] Alternatively, in one example, step 201 may include:

[0079] Step 203: Obtain the maximum temperature among all energy storage unit temperatures during the operation of the energy storage system on the previous day; if the maximum temperature is greater than the extreme temperature value, control the first device to enter the cooling mode state before the energy storage system starts operating according to the pre-cooling time of the day.

[0080] Specifically, the maximum temperature among all energy storage units during the operation of the energy storage system the previous day is obtained, and the extreme temperature value is called. When the maximum temperature is greater than the extreme temperature value, the air conditioner needs to be adjusted to the cooling mode in advance before the energy storage system is put into operation to cool down the energy storage system in advance.

[0081] The two comparison processes described above correspond to two situations that require pre-cooling. In practical applications, one of the two situations may occur, or both may occur simultaneously.

[0082] Optionally, the control command for controlling the first device to enter the cooling mode state before the energy storage system starts operating according to the pre-cooling time of the day can be sent from the main control system to the temperature control system to control the air conditioner in the temperature control system to turn on the cooling; or it can be directly set in the temperature control system, so that the temperature control system directly controls the air conditioner to turn on the cooling.

[0083] Furthermore, the daily pre-cooling time of the energy storage system is determined by the following method:

[0084] Specifically, before the first device is controlled to enter the cooling mode state according to the pre-cooling time of the day before the energy storage system starts operating, the operation-related data of the energy storage system on the previous day is acquired. This operation-related data includes: the previous day's air temperature inside the energy storage system, the maximum temperature value corresponding to the power reduction operation of the energy storage system, the percentage of power reduction, the power reduction operation time, and the pre-cooling time of the energy storage system on the previous day. Based on the previous day's air temperature inside the energy storage system in the operation-related data, combined with the maximum temperature rise caused by the material properties of the energy storage system and the extreme temperature value, a calculation is performed. The required precooling amount for the day is calculated; based on the required precooling amount for the day and the cooling capacity of the first device, the first precooling time is calculated; based on the extreme temperature value and the maximum temperature value of power reduction, power reduction percentage and power reduction operation time corresponding to the system operating power reduction operation of the energy storage system in the operation-related data, the total heat consumption energy of the previous day is obtained, and combined with the cooling capacity of the first device, the second precooling time is calculated; based on the second precooling time and the precooling time of the energy storage system of the previous day, the third precooling time is calculated; the larger value between the first precooling time and the third precooling time is extracted as the precooling time for the day.

[0085] Specifically, the pre-cooling time refers to the time required for the air conditioner to cool down before the energy storage system is put into operation.

[0086] The first time calculation method is as follows: Based on the previous day's air temperature inside the energy storage system, combined with the maximum temperature rise caused by the material properties of the energy storage system and the extreme temperature value obtained from the calculation and storage unit, the required pre-cooling amount for the day is calculated. The required pre-cooling amount for the day corresponds to a pre-cooling temperature difference, which is calculated as: maximum temperature rise + previous day's air temperature inside the energy storage system - extreme temperature value. The required pre-cooling amount for the day is calculated based on this pre-cooling temperature difference. The cooling capacity of the first device, i.e., the cooling capacity of the air conditioner, is obtained. The first pre-cooling time is calculated as: required pre-cooling amount for the day ÷ cooling capacity of the first device. The cooling capacity of the first device can be adjusted. The first pre-cooling time is calculated when the energy storage system has not undergone pre-cooling treatment.

[0087] The second time calculation method is as follows: Obtain the extreme temperature value and the maximum temperature value corresponding to the power reduction operation of the energy storage system, and determine the excess temperature value, i.e., the excess temperature value = the maximum temperature value of power reduction - the extreme temperature value. Calculate the corresponding heat dissipation energy based on the excess temperature value, i.e., the heat dissipation energy of the excess temperature value after power reduction the previous day. Obtain the power reduction percentage and power reduction operation time corresponding to the power reduction operation of the energy storage system, and calculate the energy corresponding to this portion of power, i.e., the reduced heat dissipation energy. The heat dissipation energy of the excess temperature value after power reduction the previous day + the reduced heat dissipation energy = the total heat dissipation energy of the previous day. Obtain the cooling capacity of the first device and calculate the second pre-cooling time, i.e., the second pre-cooling time = the total heat dissipation energy of the previous day ÷ the cooling capacity of the first device. At this time, it is also necessary to obtain the pre-cooling time of the energy storage system the previous day and calculate the third pre-cooling time, i.e., the third pre-cooling time = the second pre-cooling time + the pre-cooling time of the previous day. The third pre-cooling time is calculated based on the pre-cooling treatment of the energy storage system the previous day.

[0088] Finally, the larger value between the first precooling time and the third precooling time is selected as the precooling time for the day.

[0089] Step 204: Monitor the temperature of multiple energy storage units in the energy storage system to obtain the highest and lowest temperature values ​​corresponding to the energy storage units in the energy storage system.

[0090] The implementation process of this step is the same as that of step 101 in the aforementioned embodiments, and will not be repeated here.

[0091] Step 205: Compare the highest temperature value and the lowest temperature value with the set temperature control reference data of the temperature regulating device to obtain the comparison result.

[0092] The implementation process of this step is the same as that of step 102 in the aforementioned embodiments, and will not be repeated here.

[0093] Step 206: Based on the comparison results, adjust the temperature regulating device to the target operating state, which includes the off state, alarm state, and temperature control regulating state.

[0094] The implementation process of this step is the same as that of step 103 in the aforementioned embodiments, and will not be repeated here.

[0095] In this embodiment, after determining that the energy storage system needs pre-cooling, the first device is adjusted to cooling mode according to the pre-cooling time of the day before the energy storage system starts operating, thus pre-cooling it. This method intervenes in the high-temperature situation of the energy storage system in advance, improving the operating efficiency of the energy storage system during subsequent operation.

[0096] See Figure 3 , Figure 3 This is a structural diagram of the temperature control system provided in the embodiments of this application. For ease of explanation, only the parts related to the embodiments of this application are shown.

[0097] The temperature control system 300 includes: a temperature monitoring module 301, a comparison module 302, and an adjustment module 303.

[0098] Temperature monitoring module 301 is used to monitor the temperature of multiple energy storage units contained in the energy storage system and obtain the highest and lowest temperature values ​​corresponding to the energy storage units in the energy storage system.

[0099] The comparison module 302 is used to compare the highest temperature value and the lowest temperature value with the set temperature control reference data of the temperature regulating device to obtain a comparison result. The set temperature control reference data includes a lower limit value for low temperature, an upper limit value for high temperature, an extreme temperature value, an upper limit value for temperature difference corresponding to the energy storage unit in the energy storage system, and / or an extreme temperature difference value corresponding to the energy storage unit in the energy storage system. The comparison result includes a first comparison result between the lowest temperature value and the lower limit value for low temperature, a second comparison result between the highest temperature value and the upper limit value for high temperature, a third comparison result between the highest temperature value and the extreme temperature value, a fourth comparison result between the difference between the highest temperature value and the lowest temperature value and the upper limit value for temperature difference, and / or a fifth comparison result between the difference between the highest temperature value and the lowest temperature value and the extreme temperature difference value. The upper limit value for high temperature is less than the extreme temperature value, and the upper limit value for temperature difference is less than the extreme temperature difference value.

[0100] The adjustment module 303 is used to adjust the temperature regulating device to a target operating state based on the comparison result. The target operating state includes a closed state, an alarm state, and a temperature control regulating state.

[0101] Specifically, the temperature regulating device in the adjustment module includes a first device, and the temperature control adjustment state of the first device includes a cooling mode state and a heating mode state. The adjustment module is specifically used for:

[0102] Based on the first comparison result and the second comparison result, the first device is adjusted to the off state; or,

[0103] Based on the first comparison result, the first device is adjusted to the heating mode state; or,

[0104] Based on the second comparison result, the first device is adjusted to the cooling mode state; or,

[0105] Based on the third comparison result, the first device is adjusted to the alarm state.

[0106] Furthermore, the adjustment module is also used for:

[0107] If the first comparison result indicates that the lowest temperature value is greater than the sum of the lower low-temperature limit and the heating hysteresis value, and the second comparison result indicates that the highest temperature value is less than the difference between the upper high-temperature limit and the cooling hysteresis value, then the first device is adjusted to the off state; or,

[0108] If the first comparison result indicates that the lowest temperature value is less than or equal to the lower low temperature limit, the first device is adjusted to the heating mode; or,

[0109] If the second comparison result indicates that the highest temperature value is greater than or equal to the high temperature upper limit value, the first device is adjusted to the cooling mode; or...

[0110] If the third comparison result indicates that the highest temperature value is greater than the extreme temperature value, the first device is adjusted to the alarm state.

[0111] Specifically, the temperature regulating device in the adjustment module includes a second device, and the temperature control regulation state of the second device includes a fan speed regulation state. The adjustment module is specifically used for:

[0112] Based on the fourth comparison result, the second device is adjusted to the wind speed regulation state;

[0113] Based on the fifth comparison result, the second device is adjusted to the alarm state.

[0114] Furthermore, the adjustment module is specifically used for:

[0115] If the difference between the highest temperature value and the lowest temperature value is greater than or equal to the upper limit of the temperature difference, the second device is adjusted to the wind speed adjustment state. In the wind speed adjustment state, the second device sequentially adjusts the wind speed level according to the set adjustment amount until the difference is less than the upper limit of the temperature difference; or, if the difference between the highest temperature value and the lowest temperature value is greater than or equal to the extreme temperature difference value, the second device is adjusted to the alarm state, and the energy storage system is controlled to reduce the system operating power.

[0116] Specifically, the energy storage unit of the temperature monitoring module is equipped with an auxiliary heating device, the temperature regulating device in the adjustment module includes a first device, and the adjustment module is further used for:

[0117] If the ambient cooling load is detected to exceed the heating capacity of the first device, the auxiliary heating device is controlled to start heating.

[0118] Specifically, the temperature regulating device in the adjustment module includes a first device, which includes an evaporator and a condenser. The system also includes a device protection and regulation module for:

[0119] Obtain the first temperature of the evaporator and the second temperature of the condenser;

[0120] When the first temperature is less than or equal to the evaporator's safe temperature and the second temperature is greater than or equal to the condenser's safe temperature, the first device is adjusted to the off state, the alarm device is controlled to trigger an over-temperature alarm, and / or the energy storage system is controlled to reduce its operating power.

[0121] Furthermore, after adjusting the first device to the off state, controlling the alarm device to trigger an over-temperature alarm, and / or controlling the energy storage system to reduce its operating power when the first temperature is less than or equal to the evaporator's safe temperature and the second temperature is greater than or equal to the condenser's safe temperature, the device protection and adjustment module is also used for:

[0122] Obtain the third temperature of the evaporator and the fourth temperature of the condenser;

[0123] When the third temperature is greater than or equal to the sum of the evaporator safety temperature and the evaporator hysteresis value, and the fourth temperature is less than or equal to the condenser safety temperature and the condenser hysteresis value, if the first device is in the off state, then the first device is adjusted from the off state to the running state.

[0124] The system also includes a precooling module, which is specifically used for:

[0125] The system obtains the maximum daily heat load of the energy storage system and the maximum cooling capacity of the first device; if the maximum daily heat load is greater than or equal to a preset percentage of the maximum cooling capacity, the system controls the first device to enter the cooling mode state before the energy storage system starts operating according to the daily pre-cooling time; or, the system obtains the maximum temperature among all energy storage unit temperatures during the previous day's operation; if the maximum temperature is greater than the extreme temperature value, the system controls the first device to enter the cooling mode state before the energy storage system starts operating according to the daily pre-cooling time.

[0126] Furthermore, the precooling module is also used for:

[0127] The operation-related data of the energy storage system on the previous day are obtained. The operation-related data includes: the air temperature inside the energy storage system on the previous day, the maximum temperature value of power reduction corresponding to the power reduction operation of the energy storage system, the power reduction percentage and the power reduction operation time, and the pre-cooling time of the energy storage system on the previous day.

[0128] Based on the previous day's air temperature inside the energy storage system from the operation-related data, combined with the maximum temperature rise caused by the material properties of the energy storage system and the extreme temperature value, the required pre-cooling amount for the day is calculated; based on the required pre-cooling amount for the day and the cooling capacity of the first device, the first pre-cooling time is calculated.

[0129] Based on the extreme temperature value and the maximum temperature value of power reduction, power reduction percentage and power reduction operation time corresponding to the system power reduction operation of the energy storage system in the operation-related data, the total heat consumption energy of the previous day is obtained. Combined with the cooling capacity of the first device, the second pre-cooling time is calculated. Based on the second pre-cooling time and the pre-cooling time of the energy storage system of the previous day, the third pre-cooling time is calculated.

[0130] The larger of the first precooling time and the third precooling time is extracted as the precooling time for the day.

[0131] The temperature control device provided in this application embodiment can realize the various processes of the above-described temperature control method embodiment and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0132] Figure 4 This is a structural diagram of a terminal provided in an embodiment of this application. As shown in the figure, the terminal 4 of this embodiment includes: at least one processor 40 ( Figure 4(Only one is shown in the diagram), memory 41, and computer program 42 stored in said memory 41 and executable on said at least one processor 40, which, when executed, implements the steps in any of the above method embodiments.

[0133] The terminal 4 can be a computing device such as a desktop computer, laptop, handheld computer, or cloud server. The terminal 4 may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will understand that... Figure 4 This is merely an example of terminal 4 and does not constitute a limitation on terminal 4. It may include more or fewer components than shown, or combine certain components, or different components. For example, the terminal may also include input / output devices, network access devices, buses, etc.

[0134] The processor 40 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0135] The memory 41 can be an internal storage unit of the terminal 4, such as a hard disk or memory of the terminal 4. The memory 41 can also be an external storage device of the terminal 4, such as a plug-in hard disk, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the terminal 4. Furthermore, the memory 41 can include both internal storage units and external storage devices of the terminal 4. The memory 41 is used to store the computer program and other programs and data required by the terminal. The memory 41 can also be used to temporarily store data that has been output or will be output.

[0136] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0137] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0138] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0139] In the embodiments provided in this application, it should be understood that the disclosed devices / terminals and methods can be implemented in other ways. For example, the device / terminal embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0140] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0141] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0142] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0143] The methods described in this application can be implemented in whole or in part by a computer program product. When the computer program product is run on a terminal, the terminal executes the steps in the various method embodiments described above.

[0144] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A temperature control method, characterized in that, include: Temperature monitoring is performed on multiple energy storage units contained in the energy storage system to obtain the highest and lowest temperature values ​​corresponding to the energy storage units in the energy storage system. The highest and lowest temperature values ​​are compared with the set temperature control reference data of the temperature regulating device to obtain a comparison result. The set temperature control reference data includes a lower limit value for low temperature, an upper limit value for high temperature, an extreme temperature value, an upper limit value for temperature difference corresponding to the energy storage unit in the energy storage system, and / or an extreme temperature difference value corresponding to the energy storage unit in the energy storage system. The comparison result includes a first comparison result between the lowest temperature value and the lower limit value for low temperature, a second comparison result between the highest temperature value and the upper limit value for high temperature, a third comparison result between the highest temperature value and the extreme temperature value, a fourth comparison result between the difference between the highest and lowest temperature values ​​and the upper limit value for temperature difference, and / or a fifth comparison result between the difference between the highest and lowest temperature values ​​and the extreme temperature difference value. The upper limit value for high temperature is less than the extreme temperature value, and the upper limit value for temperature difference is less than the extreme temperature difference value. The extreme temperature value is the temperature threshold for determining whether to reduce the system operating power of the energy storage system, and the extreme temperature difference value is the temperature difference threshold for determining whether to reduce the system operating power of the energy storage system. Based on the comparison results, the temperature regulating device is adjusted to the target operating state, which includes the off state, alarm state, and temperature control regulating state. The temperature regulation device includes a first device, and the temperature control regulation state of the first device includes a cooling mode state. Before monitoring the temperature of multiple energy storage units in the energy storage system to obtain the highest and lowest temperature values ​​corresponding to the energy storage units in the energy storage system, the method further includes: obtaining the maximum value of the daily heat load of the energy storage system and the maximum cooling capacity of the first device; if the maximum value of the daily heat load is greater than or equal to a preset percentage of the maximum cooling capacity, controlling the first device to enter the cooling mode state before the energy storage system starts operating according to the daily pre-cooling time; or, obtaining the maximum temperature among all energy storage unit temperatures during the operation of the energy storage system on the previous day; if the maximum temperature is greater than the extreme temperature value, controlling the first device to enter the cooling mode state before the energy storage system starts operating according to the daily pre-cooling time. Before the first device enters the cooling mode state according to the pre-cooling time of the day before the energy storage system starts operating, the method further includes: acquiring the operation-related data of the energy storage system from the previous day, the operation-related data including: the previous day's air temperature inside the energy storage system, the maximum temperature value of power reduction corresponding to the system power reduction operation of the energy storage system, the percentage of power reduction, the power reduction operation time, and the pre-cooling time of the energy storage system from the previous day; based on the previous day's air temperature inside the energy storage system in the operation-related data, combined with the maximum temperature rise caused by the material properties of the energy storage system and the extreme temperature value, calculating... The required precooling amount for the day is obtained; based on the required precooling amount for the day and the cooling capacity of the first device, the first precooling time is calculated; based on the extreme temperature value and the maximum temperature value of power reduction, power reduction percentage and power reduction operation time corresponding to the system operating power reduction operation of the energy storage system in the operation-related data, the total heat consumption energy of the previous day is obtained, and combined with the cooling capacity of the first device, the second precooling time is calculated; based on the second precooling time and the precooling time of the energy storage system of the previous day, the third precooling time is calculated; the larger value between the first precooling time and the third precooling time is extracted as the precooling time for the day.

2. The method according to claim 1, characterized in that, The temperature control adjustment state of the first device includes the cooling mode state and the heating mode state; The step of adjusting the temperature regulating device to the target operating state based on the comparison result includes: Based on the first comparison result and the second comparison result, the first device is adjusted to the off state; or, Based on the first comparison result, the first device is adjusted to the heating mode state; or, Based on the second comparison result, the first device is adjusted to the cooling mode state; or, Based on the third comparison result, the first device is adjusted to the alarm state.

3. The method according to claim 2, characterized in that, include: If the first comparison result indicates that the lowest temperature value is greater than the sum of the lower low-temperature limit and the heating hysteresis value, and the second comparison result indicates that the highest temperature value is less than the difference between the upper high-temperature limit and the cooling hysteresis value, then the first device is adjusted to the off state; or, If the first comparison result indicates that the lowest temperature value is less than or equal to the lower limit of low temperature, the first device is adjusted to the heating mode. or, If the second comparison result is that the highest temperature value is greater than or equal to the high temperature upper limit value, the first device is adjusted to the cooling mode state; or, If the third comparison result indicates that the highest temperature value is greater than the extreme temperature value, the first device is adjusted to the alarm state.

4. The method according to claim 1, characterized in that, The temperature regulating device includes a second device; the temperature control regulating state of the second device includes a fan speed regulating state. The step of adjusting the temperature regulating device to the target operating state based on the comparison result includes: Based on the fourth comparison result, the second device is adjusted to the wind speed regulation state; Based on the fifth comparison result, the second device is adjusted to the alarm state.

5. The method according to claim 4, characterized in that, include: If the difference between the highest temperature value and the lowest temperature value is greater than or equal to the upper limit of the temperature difference, the second device is adjusted to the wind speed adjustment state. In the wind speed adjustment state, the second device adjusts the wind speed level sequentially according to the set adjustment amount until the difference is less than the upper limit of the temperature difference. or, If the difference between the highest temperature value and the lowest temperature value is greater than or equal to the extreme temperature difference value, the second device is adjusted to the alarm state, and the energy storage system is controlled to reduce the system operating power.

6. The method according to claim 1, characterized in that, An auxiliary heating device is arranged on the energy storage unit, the temperature regulation device includes a first device, and the method further includes: If the ambient cooling load is detected to exceed the heating capacity of the first device, the auxiliary heating device is controlled to start heating.

7. The method according to claim 1, characterized in that, The temperature regulating device includes a first device, which includes an evaporator and a condenser; the method further includes: Obtain the first temperature of the evaporator and the second temperature of the condenser; When the first temperature is less than or equal to the evaporator's safe temperature and the second temperature is greater than or equal to the condenser's safe temperature, the first device is adjusted to the off state, the alarm device is controlled to trigger an over-temperature alarm, and / or the energy storage system is controlled to reduce the system's operating power.

8. The method according to claim 7, characterized in that, After adjusting the first device to the off state, controlling the alarm device to trigger an over-temperature alarm, and / or controlling the energy storage system to reduce the system operating power when the first temperature is less than or equal to the evaporator's safe temperature and the second temperature is greater than or equal to the condenser's safe temperature, the method further includes: Obtain the third temperature of the evaporator and the fourth temperature of the condenser; When the third temperature is greater than or equal to the sum of the evaporator safety temperature and the evaporator hysteresis value, and the fourth temperature is less than or equal to the condenser safety temperature and the condenser hysteresis value, if the first device is in the off state, then the first device is adjusted from the off state to the running state.

9. A temperature control system, characterized in that, include: A temperature monitoring module is used to monitor the temperature of multiple energy storage units contained in the energy storage system, and to obtain the highest and lowest temperature values ​​corresponding to the energy storage units in the energy storage system. A comparison module is used to compare the highest temperature value and the lowest temperature value with the set temperature control reference data of the temperature regulating device to obtain a comparison result. The set temperature control reference data includes a lower limit value for low temperature, an upper limit value for high temperature, an extreme temperature value, an upper limit value for temperature difference corresponding to the energy storage unit in the energy storage system, and / or an extreme temperature difference value corresponding to the energy storage unit in the energy storage system. The comparison result includes a first comparison result between the lowest temperature value and the lower limit value for low temperature, a second comparison result between the highest temperature value and the upper limit value for high temperature, a third comparison result between the highest temperature value and the extreme temperature value, a fourth comparison result between the difference between the highest temperature value and the lowest temperature value and the upper limit value for temperature difference, and / or a fifth comparison result between the difference between the highest temperature value and the lowest temperature value and the extreme temperature difference value. The upper limit value for high temperature is less than the extreme temperature value, and the upper limit value for temperature difference is less than the extreme temperature difference value. The extreme temperature value is the temperature threshold for determining whether to reduce the system operating power of the energy storage system, and the extreme temperature difference value is the temperature difference threshold for determining whether to reduce the system operating power of the energy storage system. An adjustment module is used to adjust the temperature regulating device to a target operating state based on the comparison result, wherein the target operating state includes a closed state, an alarm state, and a temperature control regulating state. The temperature regulation device includes a first device, and the temperature control regulation state of the first device includes a cooling mode state. The temperature control system further includes a pre-cooling module, used for: obtaining the maximum value of the daily heat load of the energy storage system and the maximum cooling capacity of the first device; when the maximum value of the daily heat load is greater than or equal to a preset percentage of the maximum cooling capacity, controlling the first device to enter the cooling mode state before the energy storage system starts operating according to the daily pre-cooling time; or, obtaining the maximum temperature among all energy storage unit temperatures during the operation of the energy storage system on the previous day; when the maximum temperature is greater than the extreme temperature value, controlling the first device to enter the cooling mode state before the energy storage system starts operating according to the daily pre-cooling time. The pre-cooling module is further configured to: acquire the operation-related data of the energy storage system on the previous day, including: the previous day's air temperature inside the energy storage system, the maximum temperature value of power reduction corresponding to the system power reduction operation of the energy storage system, the percentage of power reduction, the power reduction operation time, and the pre-cooling time of the energy storage system on the previous day; calculate the required pre-cooling amount for the current day based on the previous day's air temperature inside the energy storage system in the operation-related data, combined with the maximum temperature rise caused by the material properties of the energy storage system and the extreme temperature value; calculate the first pre-cooling time based on the required pre-cooling amount for the current day and the cooling capacity of the first device; obtain the total heat dissipation energy of the previous day based on the extreme temperature value and the maximum temperature value of power reduction, the percentage of power reduction, and the power reduction operation time corresponding to the system power reduction operation of the energy storage system in the operation-related data, and calculate the second pre-cooling time based on the cooling capacity of the first device; calculate the third pre-cooling time based on the second pre-cooling time and the pre-cooling time of the energy storage system on the previous day; and extract the larger value between the first pre-cooling time and the third pre-cooling time as the pre-cooling time for the current day.

10. A terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1 to 8.

11. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 8.

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