Temperature and humidity adjusting method and system of energy storage battery, terminal equipment and storage medium

Abstract

The invention relates to the technical field of temperature and humidity adjustment, and provides a temperature and humidity adjustment method and system for an energy storage battery, terminal equipment and a storage medium, and the method comprises the steps: obtaining the cell temperature of the energy storage battery and the air humidity in an energy storage battery cabinet in real time; if the energy storage battery is in the standing state, executing a temperature control strategy in the standing state to adjust the temperature of a battery cell of the energy storage battery, and executing a humidity control strategy to adjust the air humidity in the energy storage battery cabinet; if the energy storage battery is in the charging and discharging state, executing a temperature control strategy in the charging and discharging state according to the current charging and discharging rate of the energy storage battery to adjust the temperature of a battery cell of the energy storage battery, and formulating a corresponding temperature control range under different charging and discharging rates of the energy storage battery; and the temperature and humidity are adjusted when the energy storage battery is in a standing state, so that the charging and discharging efficiency of the energy storage battery is improved, the online operation time of the temperature control device and the dehumidification device is shortened, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature and humidity regulation, and in particular to a temperature and humidity regulation method, system, terminal equipment and storage medium for an energy storage battery. Background Art

[0002] Driven by policies, energy storage power stations, industrial and commercial energy storage, and household energy storage are developing rapidly. The use of battery packs is indispensable in this development process. Battery packs will generate heat during charging and discharging. Excessive temperature will cause damage to the battery pack. Battery packs can only maximize charging and discharging efficiency and reduce heat generation within a specific temperature range.

[0003] Many existing air-cooled energy storage air conditioners still use the control method of starting cooling at the highest temperature point and starting heating at the lowest temperature point to control the operating temperature of the battery cell. However, the current control method maintains a control strategy under different battery operating conditions, which will result in the air conditioning energy consumption cannot be effectively reduced under a charge and discharge cycle. Secondly, the air humidity in the energy storage battery cabinet should not be ignored. Excessive humidity will cause corrosion of metal parts inside the battery, reduce battery performance, and even cause safety problems such as short circuits. Summary of the invention

[0004] In view of the above-mentioned defects, the purpose of the present invention is to propose a temperature and humidity adjustment method, system, terminal device and storage medium for an energy storage battery, formulate corresponding temperature control ranges under different charge and discharge rates of the energy storage battery, and adjust the temperature and humidity when the energy storage battery is in a static state, so as to improve the charge and discharge efficiency of the energy storage battery, reduce the online operation time of the temperature control device and the dehumidification device, and increase the service life.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A method for regulating temperature and humidity of an energy storage battery, comprising:

[0007] Obtain the cell temperature of the energy storage battery and the air humidity in the energy storage battery cabinet in real time;

[0008] If the energy storage battery is in a static state, the temperature control strategy in the static state is executed to adjust the cell temperature of the energy storage battery, and the humidity control strategy is executed to adjust the air humidity in the energy storage battery cabinet;

[0009] If the energy storage battery is in a charging and discharging state, the temperature of the energy storage battery cell is adjusted by executing a temperature control strategy in the charging and discharging state according to the current charging and discharging rate of the energy storage battery.

[0010] Preferably, the step of executing the temperature control strategy in a stationary state to adjust the cell temperature of the energy storage battery includes:

[0011] It is determined whether the battery cell temperature is higher than a first cooling temperature. If the battery cell temperature is higher than the first cooling temperature, the temperature control device is controlled to cool the battery cell of the energy storage battery until the battery cell temperature is lower than a first cooling stop temperature of the energy storage battery.

[0012] Furthermore, according to the current charge and discharge rate of the energy storage battery, executing the temperature control strategy under the charge and discharge state to adjust the cell temperature of the energy storage battery includes:

[0013] When the charge and discharge rate of the energy storage battery is not higher than 0.25C:

[0014] Determine whether the battery cell temperature is higher than a second cooling temperature, and if the battery cell temperature is higher than the second cooling temperature, control the temperature control device to cool the battery cell of the energy storage battery until the battery cell temperature is lower than a second cooling stop temperature of the energy storage battery;

[0015] When the charge and discharge rate of the energy storage battery is higher than 0.25C:

[0016] Determine whether the battery cell temperature is higher than a third cooling temperature, and if the battery cell temperature is higher than the third cooling temperature, control the temperature control device to cool the battery cell of the energy storage battery until the battery cell temperature is lower than a third cooling stop temperature of the energy storage battery;

[0017] The first refrigeration temperature is higher than the second refrigeration temperature, the second refrigeration temperature is higher than the third refrigeration temperature, and the first refrigeration stop temperature and the second refrigeration stop temperature are not higher than the third refrigeration temperature and the second refrigeration temperature.

[0018] Furthermore, the executing of the humidity control strategy in the static state to adjust the air humidity in the energy storage battery cabinet includes:

[0019] When the air humidity is higher than the dehumidification humidity value and the battery core temperature is lower than the dehumidification temperature value, the dehumidification device is controlled to perform a dehumidification operation on the energy storage battery cabinet;

[0020] When the air humidity is not higher than the dehumidification stop humidity value and / or the battery core temperature is not lower than the dehumidification stop temperature value, the dehumidification operation of the energy storage battery cabinet is stopped;

[0021] Wherein, the dehumidification stop temperature value is lower than the first refrigeration stop temperature.

[0022] Preferably, it also includes: if the battery cell temperature is lower than the low-temperature storage temperature of the energy storage battery, controlling the temperature control device to heat the battery cell of the energy storage battery until the battery cell temperature is not lower than the low-temperature storage temperature of the energy storage battery.

[0023] Preferably, a monitoring device is provided in the energy storage battery cabinet;

[0024] If the monitoring device issues a fire alarm in the energy storage battery cabinet, the regulation of the cell temperature of the energy storage battery and the regulation of the air humidity in the energy storage battery cabinet are stopped.

[0025] Preferably, the battery cell temperature and the air humidity are acquired by EMS or BMS;

[0026] The charge and discharge rates of the energy storage battery are detected by the PCS in the EMS or BMS.

[0027] A temperature and humidity regulating system for an energy storage battery, comprising:

[0028] An information acquisition module is used to obtain the cell temperature of the energy storage battery and the air humidity in the energy storage battery cabinet in real time;

[0029] The first regulating module is used to, if the energy storage battery is in a static state, execute the temperature control strategy in the static state to regulate the cell temperature of the energy storage battery and the humidity control strategy to regulate the air humidity in the energy storage battery cabinet;

[0030] The second regulating module is used to, if the energy storage battery is in a charging and discharging state, execute a corresponding temperature control strategy to regulate the cell temperature of the energy storage battery according to the current charging and discharging rate of the energy storage battery.

[0031] A terminal device comprises a memory, a processor and a program stored in the memory and executable on the processor, wherein the program is configured to implement the steps of the temperature and humidity adjustment method as described above.

[0032] A storage medium stores a temperature and humidity adjustment program, which implements the steps of the temperature and humidity adjustment method described above when executed by a processor.

[0033] One of the above technical solutions has the following advantages or beneficial effects:

[0034] In the static state, the temperature control device can remain in standby mode to reduce energy consumption, while reasonably adjusting the humidity, reducing energy waste and extending the life of the equipment. By dynamically adjusting the temperature control strategy according to the charge and discharge rate of the energy storage battery, energy waste can be effectively reduced, thereby improving the overall efficiency, reasonably controlling the temperature and humidity, reducing safety risks caused by high temperature and high humidity, such as corrosion or short circuit, and enhancing the overall safety of the system. According to the static or charge and discharge state of the battery, the temperature is reasonably adjusted to prevent the battery from overheating or overcooling, thereby extending the service life of the battery. By dynamically adjusting the control strategy, frequent switching of temperature control devices in static and charge and discharge states is avoided, the operation process is simplified, and the stability and efficiency of the system are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a flow chart of a method for regulating temperature and humidity of an energy storage battery provided by an embodiment of the present application;

[0036] Figure 2 It is a module diagram of a temperature and humidity adjustment system for an energy storage battery provided by an embodiment of the present application;

[0037] Figure 3 It is a temperature control flow chart of a temperature and humidity adjustment method for an energy storage battery under different charge and discharge rates provided by an embodiment of the present application;

[0038] Figure 4 It is a humidity control flow chart of a temperature and humidity adjustment method for an energy storage battery provided by an embodiment of the present application;

[0039] Figure 5 It is a low temperature control flow chart of a temperature and humidity adjustment method for an energy storage battery provided by an embodiment of the present application;

[0040] Figure 6 It is a comprehensive efficiency diagram under the prior art provided by an embodiment of the present application;

[0041] Figure 7 It is a comprehensive efficiency diagram of a temperature and humidity adjustment method for an energy storage battery provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] At present, driven by policies, energy storage power stations, industrial and commercial energy storage, and household energy storage are developing rapidly. The use of battery packs is indispensable in this development process. Battery packs will generate heat during charging and discharging. Excessive temperature will cause damage to the battery pack. Battery packs can only maximize charging and discharging efficiency and reduce heat generation within a specific temperature range.

[0047] Many existing air-cooled energy storage air conditioners still use the control method of starting cooling at the highest temperature point and starting heating at the lowest temperature point to control the operating temperature of the battery cell. However, the current control method maintains a control strategy under different battery operating conditions, which will result in the air conditioning energy consumption cannot be effectively reduced under a charge and discharge cycle. Secondly, the air humidity in the energy storage battery cabinet should not be ignored. Excessive humidity will cause corrosion of metal parts inside the battery, reduce battery performance, and even cause safety problems such as short circuits.

[0048] Therefore, a temperature and humidity adjustment method for energy storage batteries is proposed, such as Figure 1 As shown, in a preferred embodiment of the present application, the method comprises the steps of:

[0049] S1: Real-time acquisition of the battery cell temperature of the energy storage battery and the air humidity in the energy storage battery cabinet;

[0050] S2: If the energy storage battery is in a static state, the temperature control strategy in the static state is executed to adjust the cell temperature of the energy storage battery and the humidity control strategy is executed to adjust the air humidity in the energy storage battery cabinet;

[0051] S3: If the energy storage battery is in a charge and discharge state, the temperature of the energy storage battery cell is adjusted by executing a temperature control strategy in the charge and discharge state according to the current charge and discharge rate of the energy storage battery.

[0052] Specifically, in step S1, a temperature sensor can be used to obtain the cell temperature of the energy storage battery in real time. The temperature sensor can be a temperature measuring tool such as a thermistor or a digital temperature sensor. The air humidity in the energy storage battery cabinet can be obtained using a humidity detection tool such as a resistive humidity sensor or a capacitive humidity sensor. It is worth noting that the cell temperature refers to the temperature of each unit (cell) inside the energy storage battery. The cell temperature affects the performance, efficiency and safety of the battery. Real-time monitoring of the cell temperature helps prevent overheating and ensures that the battery operates within a safe temperature range, thereby extending its service life. The energy storage battery cabinet is an installation and protection structure for the energy storage battery, which provides physical protection for the battery while maintaining a suitable working environment. Temperature and humidity control in the cabinet is crucial to the stable operation of the battery.

[0053] In step S2, if the energy storage battery is in a static state, that is, the energy storage battery is in a non-charging and discharging state, the energy storage battery will not generate significant heat when it is static, so it only needs to be kept within the normal optimal storage temperature range, and the temperature adjustment equipment is kept in standby mode as much as possible to reduce energy consumption. It is worth noting that the air humidity in the energy storage battery cabinet will be affected by environmental factors. For example, the relative humidity of the air in the southern environment is relatively high, which will affect the humidity in the energy storage battery cabinet, and if the dehumidification operation is not performed, the long-term high humidity environment will cause the battery and electrical components to be damp, increasing the risk of corrosion and short circuit. In addition, the regulation of air humidity can use heating and dehumidification operations. When the battery cell needs to be cooled, it conflicts with the regulation of air humidity. When the battery cell temperature is too low and the battery cell needs to be heated, dehumidification will also be performed during the heating process, so the regulation of the battery cell temperature and the dehumidification of the air in the energy storage battery cabinet are staggered.

[0054] In step S3, the charge and discharge rate is a parameter that measures the speed of battery charging or discharging, and is usually expressed as a multiple of the battery capacity. If the capacity of a battery is 100Ah, a charge rate of 1C means that it is fully charged in 1 hour; 0.5C means that it is fully charged in 2 hours. The heat emitted by the energy storage battery in the static state and the charging and discharging state is different, so the temperature control strategy in the static state and the charging and discharging state is also different. In the charging and discharging state, for the charging and discharging operation with a higher rate, the temperature rise of the energy storage battery is higher. In order to prevent overheating from affecting the life and safety of the battery, a temperature control strategy with a lower temperature control range is required. For the charging and discharging operation with a lower rate, the energy storage battery generates less heat in the low rate state, but in order to improve efficiency and extend life, a temperature control strategy with a lower temperature control range than the static state needs to be set.

[0055] In the static state, the temperature control device can remain in standby mode to reduce energy consumption, while reasonably adjusting the humidity, reducing energy waste and extending the life of the equipment. By dynamically adjusting the temperature control strategy according to the charge and discharge rate of the energy storage battery, energy waste can be effectively reduced, thereby improving overall efficiency, reasonably controlling temperature and humidity, reducing safety risks caused by high temperature and high humidity, such as corrosion and short circuit, and enhancing the overall safety of the system. According to the static or charge and discharge state of the battery, the temperature is reasonably adjusted to prevent the battery from overheating or overcooling, thereby extending the service life of the battery. By dynamically adjusting the control strategy, frequent switching of temperature control devices in static and charge and discharge states is avoided, the operation process is simplified, and the stability and efficiency of the system are improved.

[0056] In this embodiment, executing the temperature control strategy in the static state to adjust the cell temperature of the energy storage battery includes:

[0057] It is determined whether the battery cell temperature is higher than a first cooling temperature. If the battery cell temperature is higher than the first cooling temperature, the temperature control device is controlled to cool the battery cell of the energy storage battery until the battery cell temperature is lower than a first cooling stop temperature of the energy storage battery.

[0058] Specifically, when the energy storage battery is at rest, less heat is generated and the temperature changes slowly. In this state, because there is no longer a large amount of current passing through, the temperature control of the battery can be relatively loose, and the heat generated by the battery is less. The temperature control range of the energy storage battery in the rest state will be higher than the temperature control range of the energy storage battery in the charging and discharging state, so the first cooling temperature can be set within the storage temperature range of the energy storage battery. For example, if the storage temperature range of a certain energy storage battery is 15°C-35°C, the first cooling temperature can be set to 33°C. When the battery cell temperature reaches 33°C, the temperature control device will start to operate and continue to cool the battery cell until the temperature drops below the set first cooling stop temperature. The first cooling stop temperature is determined by the first cooling temperature and the cooling hysteresis. The setting of the cooling hysteresis can be determined according to factors and requirements such as the temperature change characteristics of the battery and environmental conditions. For example, if the cooling hysteresis is 3°C, then the first cooling stop temperature is 30°C. When the energy storage battery is at rest, the temperature control range can be extended within a suitable temperature range to prevent the frequent switching of the working state of the temperature control device, thereby reducing performance loss.

[0059] Furthermore, if Figure 3 As shown, according to the current charge and discharge rate of the energy storage battery, the corresponding temperature control strategy is executed to adjust the cell temperature of the energy storage battery, including:

[0060] When the charge and discharge rate of the energy storage battery is not higher than 0.25C:

[0061] Determine whether the battery cell temperature is higher than a second cooling temperature, and if the battery cell temperature is higher than the second cooling temperature, control the temperature control device to cool the battery cell of the energy storage battery until the battery cell temperature is lower than a second cooling stop temperature of the energy storage battery;

[0062] When the charge and discharge rate of the energy storage battery is higher than 0.25C:

[0063] Determine whether the battery cell temperature is higher than a third cooling temperature, and if the battery cell temperature is higher than the third cooling temperature, control the temperature control device to cool the battery cell of the energy storage battery until the battery cell temperature is lower than a third cooling stop temperature of the energy storage battery;

[0064] The first refrigeration temperature is higher than the second refrigeration temperature, the second refrigeration temperature is higher than the third refrigeration temperature, and the first refrigeration stop temperature and the second refrigeration stop temperature are not higher than the third refrigeration temperature and the second refrigeration temperature.

[0065] Specifically, when the energy storage battery is charged and discharged at a high rate, the temperature rise rate of the battery cell will accelerate, and when the energy storage battery is charged and discharged at a low rate, the temperature rise rate of the battery cell will be relatively slow. Therefore, this solution sets the critical point of the charge and discharge rate to 0.25C. When the charge and discharge rate of the energy storage battery is higher than 0.25C, the temperature rise of the battery cell will be very high, so the setting value of the third refrigeration temperature is lower than the second refrigeration temperature. The temperature of the battery cell will rise when the energy storage battery is in the charge and discharge state, so the second refrigeration temperature must be lower than the first refrigeration temperature. In order to prevent the energy storage battery from frequently opening and closing the temperature control device when switching between the static state and the charge and discharge state, the first refrigeration stop temperature and the second refrigeration stop temperature are set not higher than the third refrigeration temperature and the second refrigeration temperature. For example, the first refrigeration temperature is set to 35°C, the first refrigeration stop temperature is 30°C, the second refrigeration temperature is 33°C, the second refrigeration stop temperature is 30°C, the third refrigeration temperature is 31°C, and the third refrigeration stop temperature is 27°C.

[0066] like Figure 6 and Figure 7 A new 600KW, 1290KWh industrial and commercial energy storage project was built in a certain place in Guangdong. A single battery system uses a 5KW cooling capacity industrial air conditioner to dissipate heat for a 215KWh battery cabinet. This project adopts a two-charge and two-discharge operation strategy throughout the day. The capacity of the park transformer is 630KA. Figure 6 This is a summary diagram of system efficiency using conventional temperature control strategies. Figure 7 This is a summary diagram of the system's overall efficiency after using this method. It can be seen that this method has a positive effect on the temperature control of the energy storage battery and improves the overall efficiency of the energy storage project.

[0067] Furthermore, if Figure 4 As shown, the execution of the humidity control strategy in the static state to adjust the air humidity in the energy storage battery cabinet includes:

[0068] When the air humidity is higher than the dehumidification humidity value and the battery core temperature is lower than the dehumidification temperature value, the dehumidification device is controlled to perform a dehumidification operation on the energy storage battery cabinet;

[0069] When the air humidity is not higher than the dehumidification stop humidity value and / or the battery core temperature is not lower than the dehumidification stop temperature value, the dehumidification operation of the energy storage battery cabinet is stopped;

[0070] Wherein, the dehumidification stop temperature value is lower than the first refrigeration stop temperature.

[0071] Specifically, in actual applications, the energy storage battery changes from a charging and discharging state to a static state, and the temperature adjustment of the temperature control device has a hysteresis. At this time, the temperature of the battery cell is relatively low. When the air humidity is higher than the dehumidification humidity value, the dehumidification device is controlled to perform a dehumidification operation on the energy storage battery cabinet. The temperature of the battery cell will also increase during the dehumidification operation. In order to avoid the battery cell temperature being higher than the first refrigeration temperature in the static state after the dehumidification operation is completed, the dehumidification stop temperature value is set lower than the first refrigeration stop temperature to prevent the heat of the dehumidification operation from making the battery cell temperature too close to the first refrigeration temperature. When there is a hysteresis in the temperature adjustment, the frequent switching of the adjustment of the battery cell temperature in the static state and the adjustment of the air humidity in the energy storage battery cabinet is prevented, thereby reducing the cumbersome operation of the adjustment switching. Exemplarily, the dehumidification humidity value RH1 is 90%, the dehumidification temperature value T1=22°C, the dehumidification stop humidity value RH2 is 70%, and the dehumidification stop temperature value T2 is 28°C. When the air humidity in the energy storage battery cabinet is greater than RH1 and the battery cell temperature is lower than 22°C, the dehumidification device is controlled to perform a dehumidification operation on the energy storage battery cabinet. Since the dehumidification operation will cause the temperature to rise, when the air humidity in the energy storage battery cabinet is lower than RH2 and the battery cell temperature is higher than the dehumidification stop temperature value T2, when one or both of the two conditions are met, the dehumidification operation in the energy storage battery cabinet is stopped. It is worth noting that the dehumidification humidity value, dehumidification temperature value, dehumidification stop humidity value and dehumidification stop temperature value can be set according to different regional climates and working environments. It is only necessary to follow that the dehumidification stop temperature value is lower than the first refrigeration stop temperature to prevent the problem of frequent switching between dehumidification operation and refrigeration operation.

[0072] like Figure 5 As shown, it also includes: if the battery cell temperature is lower than the low-temperature storage temperature of the energy storage battery, controlling the temperature control device to heat the battery cell of the energy storage battery until the battery cell temperature is not lower than the low-temperature storage temperature of the energy storage battery.

[0073] Specifically, different energy storage batteries have different optimal storage temperature ranges. When the battery cell temperature is lower than the low-temperature storage temperature, heating can avoid performance degradation or damage to the battery due to low temperature. By raising the battery cell temperature to a safe range and then putting the temperature control device on standby, it can ensure that the battery has good performance and stability during startup or operation. Keeping the battery cell within the appropriate temperature range helps to extend the battery life and avoid battery damage caused by low temperature.

[0074] The energy storage battery cabinet is provided with monitoring equipment;

[0075] If the monitoring device issues a fire alarm in the energy storage battery cabinet, the regulation of the cell temperature of the energy storage battery and the regulation of the air humidity in the energy storage battery cabinet are stopped.

[0076] Specifically, a large amount of heat is generated when the energy storage battery cells are charged and discharged, so monitoring equipment is installed in the energy storage battery cabinet to monitor the fire situation in the energy storage battery cabinet. When a fire occurs, the regulation system (used for temperature and humidity regulation) in the battery cabinet may be at risk due to high temperature, smoke or other factors. The monitoring equipment detects the fire and controls the regulation system to stop operating, which can reduce the workload of the equipment and reduce the possibility of electrical failure or equipment damage, thereby protecting the safety of the equipment and operators; temperature and humidity regulation equipment may generate additional heat or windflow during operation, which may interfere with or affect the fire situation. Stopping these adjustments can avoid further impact on the fire situation and prevent the heat and windflow generated by the equipment from exacerbating the fire or affecting the fire extinguishing operation.

[0077] The battery cell temperature and the air humidity are acquired by the EMS or the BMS;

[0078] The charge and discharge rates of the energy storage battery are detected by the PCS in the EMS or BMS.

[0079] Specifically, EMS is an energy management system that can monitor and optimize energy use, including energy flow, load management, and system efficiency in battery energy storage systems. BMS is a battery management system that can monitor and manage the health status of the battery, including cell temperature, battery voltage, current, and charge and discharge status. PCS is a power conversion system that is used to detect the charge and discharge rate of energy storage batteries. Detecting the charge and discharge rate can accurately adjust the temperature control strategy. PCS can help the system manage energy flow more efficiently and accurately sense the charge and discharge rate of energy storage batteries.

[0080] like Figure 2 As shown, a temperature and humidity regulating system for an energy storage battery comprises:

[0081] Information acquisition module 1, used to obtain the cell temperature of the energy storage battery and the air humidity in the energy storage battery cabinet in real time;

[0082] The first regulating module 2 is used for, if the energy storage battery is in a static state, executing the temperature control strategy in the static state to regulate the cell temperature of the energy storage battery and the humidity control strategy to regulate the air humidity in the energy storage battery cabinet;

[0083] The second regulating module 3 is used to, if the energy storage battery is in a charging and discharging state, execute a corresponding temperature control strategy to regulate the cell temperature of the energy storage battery according to the current charging and discharging rate of the energy storage battery.

[0084] This embodiment implements the temperature and humidity adjustment method and implementation process of the energy storage battery. Please refer to the above embodiments and will not be described in detail here.

[0085] In addition, an embodiment of the present invention further proposes a terminal device, which includes a memory, a processor, and a program stored in the memory and executable on the processor, wherein the program is configured to implement the steps of the temperature and humidity adjustment method for the energy storage battery as described above.

[0086] Since the program is configured to implement the steps of the temperature and humidity adjustment method for the energy storage battery as described above, the program at least has all the beneficial effects brought about by all the technical solutions of all the aforementioned embodiments, which will not be described one by one here.

[0087] In addition, an embodiment of the present application further proposes a storage medium, on which a temperature and humidity adjustment program for an energy storage battery is stored. When the temperature and humidity adjustment program for the energy storage battery is executed by a processor, the steps of the temperature and humidity adjustment method for the energy storage battery as described above are implemented.

[0088] Since all the technical solutions of all the aforementioned embodiments are adopted when the temperature and humidity adjustment program of the energy storage battery is executed by the processor, it has at least all the beneficial effects brought by all the technical solutions of all the aforementioned embodiments, which will not be described one by one here.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0090] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for regulating temperature and humidity of an energy storage battery, characterized in that: include: Obtain the cell temperature of the energy storage battery and the air humidity in the energy storage battery cabinet in real time; If the energy storage battery is in a static state, the temperature control strategy in the static state is executed to adjust the cell temperature of the energy storage battery, and the humidity control strategy is executed to adjust the air humidity in the energy storage battery cabinet; If the energy storage battery is in a charging and discharging state, the temperature of the energy storage battery cell is adjusted by executing a temperature control strategy in the charging and discharging state according to the current charging and discharging rate of the energy storage battery.

2. The temperature and humidity adjustment method of the energy storage battery according to claim 1, characterized in that: The step of executing the temperature control strategy in a static state to adjust the cell temperature of the energy storage battery comprises: It is determined whether the battery cell temperature is higher than a first cooling temperature. If the battery cell temperature is higher than the first cooling temperature, the temperature control device is controlled to cool the battery cell of the energy storage battery until the battery cell temperature is lower than a first cooling stop temperature of the energy storage battery.

3. The temperature and humidity adjustment method of the energy storage battery according to claim 2, characterized in that: According to the current charge and discharge rate of the energy storage battery, the temperature control strategy under the charge and discharge state is implemented to adjust the cell temperature of the energy storage battery, including: When the charge and discharge rate of the energy storage battery is not higher than 0.25C: Determine whether the battery cell temperature is higher than a second cooling temperature, and if the battery cell temperature is higher than the second cooling temperature, control the temperature control device to cool the battery cell of the energy storage battery until the battery cell temperature is lower than a second cooling stop temperature of the energy storage battery; When the charge and discharge rate of the energy storage battery is higher than 0.25C: Determine whether the battery cell temperature is higher than a third cooling temperature, and if the battery cell temperature is higher than the third cooling temperature, control the temperature control device to cool the battery cell of the energy storage battery until the battery cell temperature is lower than a third cooling stop temperature of the energy storage battery; The first refrigeration temperature is higher than the second refrigeration temperature, the second refrigeration temperature is higher than the third refrigeration temperature, and the first refrigeration stop temperature and the second refrigeration stop temperature are not higher than the third refrigeration temperature and the second refrigeration temperature.

4. The method for regulating temperature and humidity of an energy storage battery according to claim 3, characterized in that: The step of executing the humidity control strategy in a static state to adjust the air humidity in the energy storage battery cabinet includes: When the air humidity is higher than the dehumidification humidity value and the battery core temperature is lower than the dehumidification temperature value, the dehumidification device is controlled to perform a dehumidification operation on the energy storage battery cabinet; When the air humidity is not higher than the dehumidification stop humidity value and / or the battery core temperature is not lower than the dehumidification stop temperature value, the dehumidification operation of the energy storage battery cabinet is stopped; Wherein, the dehumidification stop temperature value is lower than the first refrigeration stop temperature.

5. The method for regulating temperature and humidity of an energy storage battery according to any one of claims 1 to 4, characterized in that: Also includes: If the battery cell temperature is lower than the low-temperature storage temperature of the energy storage battery, the temperature control device is controlled to heat the battery cell of the energy storage battery until the battery cell temperature is not lower than the low-temperature storage temperature of the energy storage battery.

6. The temperature and humidity adjustment method of the energy storage battery according to claim 1, characterized in that: The energy storage battery cabinet is provided with monitoring equipment; If the monitoring device issues a fire alarm in the energy storage battery cabinet, the adjustment of the cell temperature of the energy storage battery and the adjustment of the air humidity in the energy storage battery cabinet are stopped.

7. The temperature and humidity adjustment method of the energy storage battery according to claim 1, characterized in that: The battery cell temperature and the air humidity are acquired by the EMS or the BMS; The charge and discharge rates of the energy storage battery are detected by the PCS in the EMS or BMS.

8. A temperature and humidity regulating system for an energy storage battery, characterized in that: include: An information acquisition module is used to obtain the cell temperature of the energy storage battery and the air humidity in the energy storage battery cabinet in real time; The first regulating module is used to, if the energy storage battery is in a static state, execute the temperature control strategy in the static state to regulate the cell temperature of the energy storage battery and the humidity control strategy to regulate the air humidity in the energy storage battery cabinet; The second regulating module is used to, if the energy storage battery is in a charging and discharging state, execute a corresponding temperature control strategy to regulate the cell temperature of the energy storage battery according to the current charging and discharging rate of the energy storage battery.

9. A terminal device, characterized in that: The terminal device includes a memory, a processor, and a program stored in the memory and executable on the processor, wherein the program is configured to implement the steps of the temperature and humidity adjustment method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a temperature and humidity adjustment program, and when the temperature and humidity adjustment program is executed by the processor, the steps of the temperature and humidity adjustment method according to any one of claims 1 to 7 are implemented.

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