Integrated heat management method and device for subdivision type energy storage system

Abstract

The invention discloses an integrated thermal management method and device for a subdivision type energy storage system. The thermal management method comprises the following steps: acquiring a real-time temperature value, a charge-discharge state and charge-discharge times of an energy storage battery pack in each battery accommodating cavity; based on the real-time temperature value, the charge-discharge state and the charge-discharge frequency of each energy storage battery pack, calculating a temperature control operation index of the energy storage battery pack; and based on the temperature control operation indexes, the operation states of the corresponding cavity fans are controlled. Through precise temperature control adjustment of each energy storage battery pack in the subdivision type energy storage system, the operation cost of the air cooling equipment is greatly reduced, the service life of the equipment is prolonged, and the operation safety and reliability of the energy storage system are improved.

Description

Technical Field

[0001] The present invention relates to the field of energy storage control technology, and in particular to an integrated thermal management method and device for a compartmented energy storage system. Background Art

[0002] The thermal management of compartmented energy storage systems is usually integrated with battery management systems (BMS), fire protection systems, etc. The thermal management system works closely with the BMS, which can monitor the battery status information in real time, such as temperature, voltage, current, etc., and feed this information back to the thermal management system so that the thermal management system can adjust the heat dissipation strategy in time. At the same time, the thermal management system works in coordination with the fire protection system, and when the battery temperature rises abnormally or there is a risk of thermal runaway, fire protection measures can be initiated in time to ensure the safety of the energy storage system.

[0003] In a compartmented energy storage system, the air cooling system dissipates heat through air circulation. Due to the fluidity and heat transfer characteristics of the air, it is easy to cause uneven temperature distribution in the battery compartment. Especially when the battery modules are closely arranged or the cavity air duct design is unreasonable, some battery modules may not be fully cooled, resulting in local overtemperature, affecting the performance and life of the battery. Air conditioners, fans and other equipment in the air cooling system consume a lot of electricity to maintain operation. In large-scale compartmented energy storage systems, the energy consumption of these devices cannot be ignored, especially in high temperature environments. In order to ensure the normal operating temperature of the battery, the air cooling system needs to run at high load for a long time, resulting in further increase in energy consumption. The above-mentioned air cooling control method does not have enough control precision during operation, consumes too much additional electricity, reduces the economy of the energy storage equipment operation, and increases the system operation cost. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an integrated thermal management method and device for a compartment-type energy storage system, which greatly reduces the operating cost of the air-cooled equipment, extends the service life of the equipment, and improves the safety and reliability of the energy storage system operation by accurately controlling the temperature of each energy storage battery pack in the compartment-type energy storage system.

[0005] In order to solve the above technical problems, a first aspect of an embodiment of the present invention provides an integrated thermal management method for a compartment-type energy storage system, wherein the compartment-type energy storage system comprises: a box body, an air cooling system and a plurality of battery compartments arranged in parallel, wherein the air cooling system comprises an air outlet, an air outlet fan, an air inlet, an air inlet fan and a main air duct connecting the air outlet and the air inlet, each of the battery compartments comprises a plurality of battery accommodating cavities arranged in a planar matrix, each battery accommodating cavity comprises a cavity air duct and an energy storage battery pack, the cavity air duct inlet and cavity air duct outlet of each cavity air duct are both connected to the main air duct of the box body, and the cavity air duct inlet and cavity air duct outlet of the battery accommodating cavity are both provided with a cavity fan corresponding to the energy storage battery pack, and the thermal management method comprises the following steps:

[0006] Obtain the real-time temperature value, charge and discharge status, and charge and discharge times of the energy storage battery pack in each battery receiving cavity;

[0007] Calculate the temperature control operation index of the energy storage battery pack based on the real-time temperature value, charge and discharge state, and charge and discharge times of each energy storage battery pack;

[0008] Based on the temperature control operation index, the operation state of the corresponding cavity fan is controlled.

[0009] Furthermore, the battery accommodating cavity is provided with a first temperature sensor on the side wall of the energy storage battery pack and a second temperature sensor arranged inside the energy storage battery pack;

[0010] The method of obtaining the real-time temperature value, charge and discharge status, and charge and discharge times of the energy storage battery pack in each battery receiving cavity includes:

[0011] Acquire a first temperature detection value detected by the first temperature sensor, a second temperature detection value detected by the second temperature sensor, and the number of charge and discharge times of the energy storage battery pack in a preset cycle;

[0012] Based on the first temperature detection value, the second temperature detection value, the number of charge and discharge times, and the charge and discharge status, the temperature control operation index of the energy storage battery pack is calculated, and the operation status of the corresponding cavity fan is controlled based on the temperature control operation index.

[0013] Furthermore, the temperature control operation index K i The calculation formula is:

[0014] K i =α i ×(1-O i1 )+β i ×(1-O i2 )+η i ×C iN +λ i ×S i ;

[0015]

[0016]

[0017] Among them, i is the serial number of the energy storage battery pack, α i is the weight coefficient of the first temperature detection value, β i is the weight coefficient of the second temperature detection value, η i is the weight coefficient of the number of charge and discharge times, λ i is the weight coefficient of the charge and discharge state, O i1 is the first temperature excess index, O i2 is the second temperature excess index, C iN is the charge and discharge times impact index, S i is the charge and discharge state influence index, T i1 is the first temperature detection value, T MAX is the preset temperature threshold, T i2 is the second temperature detection value, N i is the current charge and discharge times, N MAX is the maximum number of charge and discharge times, P charge is the charging power of the energy storage battery pack, P max is the maximum charge and discharge power of the energy storage battery pack, P discharge is the discharge power of the energy storage battery pack.

[0018] Furthermore, the calculating of the temperature detection index of the energy storage battery pack further includes:

[0019] Obtaining first temperature detection values ​​of a plurality of adjacent energy storage battery groups;

[0020] Calculating the temperature control operation index of the current energy storage battery pack based on the first temperature detection values ​​of a plurality of adjacent energy storage battery packs;

[0021] The calculation formula of the temperature control operation index is:

[0022]

[0023] Among them, θ i is the weight of the temperature influence coefficient of the adjacent battery pack of the current energy storage battery pack, M ij is the temperature influence coefficient of the adjacent battery pack of the current energy storage battery pack, ω ij is the temperature influence weight of the jth energy storage battery group adjacent to the current energy storage battery group, j is the sequence number of the m adjacent energy storage battery groups of the current energy storage battery group, O i1j is the first temperature exceeding standard index of the jth adjacent energy storage battery group, T i1j is the first temperature detection value of the jth adjacent energy storage battery group, T optis the optimal operating temperature of the energy storage battery pack, and k is the temperature adjustment constant.

[0024] Further, the controlling the operating state of the corresponding chamber fan based on the temperature control operating index includes:

[0025] When the energy storage battery pack is in a non-charging and discharging state and the temperature control operation index is lower than a first preset temperature control threshold, controlling the corresponding cavity fan to operate in a minimum power mode;

[0026] When the energy storage battery pack is in a charging and discharging state or the temperature control operation index is higher than a first preset temperature control threshold, controlling the corresponding cavity fan to operate in an economic mode;

[0027] When the energy storage battery pack is in a charging and discharging state and the temperature control operation index is higher than a first preset temperature control threshold, the corresponding cavity fan is controlled to operate in a rated power mode.

[0028] Furthermore, the integrated thermal management method of the compartmented energy storage system also includes:

[0029] When the ratio of the number of the energy storage battery groups whose temperature control operation index is higher than the first preset temperature control threshold in the compartment-type energy storage system to the number of all energy storage battery groups is greater than or equal to the first preset ratio value, the air outlet fan and the air inlet fan are controlled to operate in the rated power mode;

[0030] When the ratio of the number of the energy storage battery groups whose temperature control operation index is higher than the first preset temperature control threshold in the compartment-type energy storage system to the number of all energy storage battery groups is less than the first preset ratio value and greater than or equal to the second preset ratio value, the air outlet fan and the air inlet fan are controlled to operate in an economic mode;

[0031] When the ratio of the number of energy storage battery groups whose temperature control operation index in the compartmented energy storage system is higher than the first preset temperature control threshold to the number of all energy storage battery groups is less than a second preset ratio value, the air outlet fan and the air inlet fan are controlled to operate in the lowest power mode.

[0032] Furthermore, the integrated thermal management method of the compartmented energy storage system also includes:

[0033] When the sum of the temperature control operation indexes of all the energy storage battery packs in the compartmented energy storage system is greater than or equal to a second temperature control threshold, controlling the air outlet fan and the air inlet fan to operate in a rated power mode;

[0034] When the sum of the temperature control operation indexes of all the energy storage battery groups in the compartmented energy storage system is less than the second temperature control threshold and greater than or equal to the third temperature control threshold, the air outlet fan and the air inlet fan are controlled to operate in an economic mode;

[0035] When the sum of the temperature control operation indexes of all the energy storage battery groups in the compartmented energy storage system is less than a third temperature control threshold, the air outlet fan and the air inlet fan are controlled to operate in a minimum power mode.

[0036] Furthermore, the air outlet fan and the air inlet fan operate in a minimum power mode in an initial state.

[0037] Correspondingly, a second aspect of an embodiment of the present invention provides an integrated thermal management device for a compartmented energy storage system, wherein the compartmented energy storage system is controlled by the integrated thermal management method for a compartmented energy storage system, wherein the compartmented energy storage system comprises: a box, an air cooling system, and a plurality of battery compartments arranged in parallel, wherein the air cooling system comprises an air outlet, an air outlet fan, an air inlet, an air inlet fan, and a main air duct connecting the air outlet and the air inlet, each of the battery compartments comprising a plurality of battery accommodating cavities arranged in a planar matrix, each battery accommodating cavity comprising a cavity air duct and an energy storage battery pack, the cavity air duct inlet and cavity air duct outlet of each cavity air duct are both connected to the main air duct of the box, and the cavity air duct inlet and cavity air duct outlet of the battery accommodating cavity are both provided with a cavity fan corresponding to the energy storage battery pack, and the thermal management device comprises:

[0038] A battery status acquisition module, which is used to obtain the real-time temperature value, charge and discharge status, and charge and discharge times of the energy storage battery pack in each battery accommodating cavity;

[0039] A temperature control coefficient calculation module, which is used to calculate the temperature control operation index of the energy storage battery pack based on the real-time temperature value, charge and discharge state and charge and discharge times of each energy storage battery pack;

[0040] The air cooling mode control module is used to control the operating state of the corresponding cavity fan based on the temperature control operation index.

[0041] Accordingly, a third aspect of an embodiment of the present invention provides an electronic device, comprising: at least one processor; and a memory connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes the above-mentioned integrated thermal management method for the compartmented energy storage system.

[0042] Accordingly, a fourth aspect of an embodiment of the present invention provides a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the above-mentioned integrated thermal management method for a compartmented energy storage system.

[0043] The above technical solution of the embodiment of the present invention has the following beneficial technical effects:

[0044] 1. By real-time monitoring of the temperature, charge and discharge status and number of energy storage battery packs in each battery compartment, this method can accurately calculate the temperature control operation index, thereby achieving precise control of the temperature in each battery compartment and ensuring that the battery operates within the optimal performance and safe temperature range. ;

[0045] 2. Dynamically adjust the operating status of the cavity fan according to the temperature control operation index, which can optimize the fan's energy efficiency while ensuring the battery's heat dissipation needs, reduce unnecessary energy consumption, and improve the energy utilization efficiency of the entire energy storage system;

[0046] 3. By managing the battery compartments in compartments and combining the temperature control operation index to intelligently control the fan, it is possible to effectively prevent battery overheating, reduce the risk of thermal runaway, enhance the reliability and stability of the energy storage system, and extend the battery life. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a flow chart of an integrated thermal management method for a compartmented energy storage system provided by an embodiment of the present invention;

[0048] Figure 2 It is a schematic diagram of the principle of a compartment-type energy storage system provided by an embodiment of the present invention;

[0049] Figure 3 It is a block diagram of a module of an integrated thermal management device for a compartmented energy storage system provided in an embodiment of the present invention.

[0050] Reference numerals:

[0051] 1. Box body, 21. Air outlet, 22. Air outlet fan, 23. Air inlet, 24. Air inlet fan, 25. Main air duct, 31. Energy storage battery pack, 32. Cavity fan, 33. Cavity air duct.

[0052] Z1, battery status acquisition module, Z2, temperature control coefficient calculation module, Z3, air cooling mode control module. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0054] Please refer to Figure 1 and Figure 2The first aspect of the embodiment of the present invention provides an integrated thermal management method for a compartment-type energy storage system, wherein the compartment-type energy storage system comprises: a box body 1, an air cooling system and a plurality of battery compartments arranged in parallel, wherein the air cooling system comprises an air outlet 21, an air outlet fan 22, an air inlet 23, an air inlet fan 24 and a main air duct 25 connecting the air outlet 21 and the air inlet 23, each battery compartment comprises a plurality of battery accommodating cavities arranged in a planar matrix, each battery accommodating cavity comprises a cavity air duct 33 and an energy storage battery pack 31, a cavity air duct inlet and a cavity air duct outlet of each cavity air duct 33 are both connected to the main air duct 25 of the box body 1, and a cavity fan 32 corresponding to the energy storage battery pack 31 is provided at the cavity air duct inlet and the cavity air duct outlet of the battery accommodating cavity, and the thermal management method comprises the following steps:

[0055] Step S100, obtaining the real-time temperature value, charge and discharge status and charge and discharge times of the energy storage battery pack 31 in each battery receiving cavity.

[0056] The temperature of the energy storage battery pack 31 is monitored in real time by temperature sensors set in each battery accommodating cavity. These sensors can provide accurate data about the current thermal state of the battery pack; the battery management system (BMS) can provide real-time working status information of the battery pack. The heat generated by the battery during charging and discharging is different, and different cooling strategies may be required; in addition, the BMS will track the charge and discharge cycle of each battery module for reference and formulation of control strategies.

[0057] Step S200 , calculating the temperature control operation index of the energy storage battery group 31 based on the real-time temperature value, charge and discharge state, and charge and discharge times of each energy storage battery group 31 .

[0058] In a compartmented energy storage system, when calculating the temperature control operation index of the energy storage battery pack 31, it is necessary to consider the real-time temperature value, charge and discharge status, and charge and discharge times of the energy storage battery pack 31. This coefficient is a comprehensive indicator used to evaluate the thermal management performance of the battery pack under current operating conditions. The temperature control operation index can help the system accurately monitor and control the temperature of each battery compartment to ensure that the battery operates within the optimal performance and safety range.

[0059] Step S300: Based on the temperature control operation index, the operation state of the corresponding cavity fan 32 is controlled. The operation state of the cavity fan 32 in each battery receiving cavity is dynamically adjusted according to the temperature control operation index.

[0060] The function of the cavity fan 32 is to promote air flow around the corresponding energy storage battery pack 31, help it dissipate heat, and maintain the uniformity and suitability of the battery temperature. Through the intelligent control algorithm, the system can analyze the temperature control operation index in real time and adjust the fan speed and air volume accordingly to adapt to the current heat load and battery status.

[0061] For example, when the temperature control operation index indicates that the battery temperature is high or more heat is generated during charging, the system will increase the fan speed to enhance the cooling effect. Conversely, if the battery temperature is low or less heat is generated during discharge, the system may reduce the fan speed to reduce energy consumption and keep the battery within a suitable temperature range.

[0062] In the present application, since there are always energy storage battery packs 31 in the charging and discharging state inside the box body 1, in order to ensure the equipment safety of each energy storage battery pack 31, the corresponding cavity fan 32 operates in the lowest power state.

[0063] In a specific implementation of the embodiment of the present invention, a first temperature sensor located on the side wall of the energy storage battery pack 31 and a second temperature sensor disposed inside the energy storage battery pack 31 are disposed in the battery accommodating cavity.

[0064] Furthermore, the step S100 of obtaining the real-time temperature value of the energy storage battery pack 31 in each battery receiving cavity includes:

[0065] S110, obtaining a first temperature detection value detected by the first temperature sensor, a second temperature detection value detected by the second temperature sensor, and the number of charge and discharge times of the energy storage battery group 31 in a preset cycle.

[0066] After obtaining parameters such as the first temperature detection value, the second temperature detection value, the number of charge and discharge times, and the charge and discharge status of an energy storage battery group 31, the temperature control operation index of the energy storage battery group 31 is calculated based on the above-mentioned acquired parameters, and the operation status of the corresponding cavity fan 32 is controlled based on the temperature control operation index.

[0067] In the compartmented energy storage system, the temperature of the energy storage battery pack 31 is monitored in real time by the first and second temperature sensors, and the number of charge and discharge cycles and the charge and discharge status of the battery pack in a specific cycle are recorded. These parameters are the key to evaluating the thermal state of the battery and optimizing the thermal management strategy. Based on these data, a temperature control operation index is calculated, which comprehensively reflects the thermal load and operating conditions of the battery pack. Subsequently, according to the temperature control operation index, the operating state of the cavity fan 32 in the corresponding battery accommodating cavity is adjusted to ensure that the battery pack is maintained within the optimal operating temperature range, thereby ensuring the performance, safety and life of the battery.

[0068] Furthermore, the temperature control operation index K i The calculation formula is:

[0069] K i =α i ×(1-O i1 )+β i ×(1-O i2 )+η i ×C iN +λi ×S i ;

[0070]

[0071] Wherein, i is the serial number of the energy storage battery pack 31, α i is the weight coefficient of the first temperature detection value, β i is the weight coefficient of the second temperature detection value, η i is the weight coefficient of the number of charge and discharge times, λ i is the weight coefficient of the charge and discharge state, O i1 is the first temperature excess index, O i2 is the second temperature excess index, C iN is the charge and discharge times impact index, S i is the charge and discharge state influence index, T i1 is the first temperature detection value, T MAX is the preset temperature threshold, T i2 is the second temperature detection value, N i is the current charge and discharge times, N MAX is the maximum number of charge and discharge times, P charge is the charging power of the energy storage battery group 31, P max is the maximum charge and discharge power of the energy storage battery group 31, P discharge is the discharge power of the energy storage battery group 31.

[0072] Furthermore, in order to improve the accuracy of the temperature change prediction of the energy storage battery pack 31 in each battery accommodating cavity, the current real-time temperature values ​​of the surrounding energy storage battery packs 31 can be comprehensively considered, and the temperature conditions of several surrounding energy storage battery packs 31 can be included in the change trend prediction process of the current energy storage battery pack 31, thereby improving the prediction accuracy.

[0073] Therefore, the calculation of the temperature detection index of the energy storage battery group 31 in step S200 also includes:

[0074] Step S210, obtaining first temperature detection values ​​of a plurality of adjacent energy storage battery groups 31;

[0075] Step S220 , calculating the temperature control operation index of the current energy storage battery group 31 by combining the first temperature detection values ​​of a plurality of adjacent energy storage battery groups 31 .

[0076] In order to more comprehensively evaluate and control the temperature of the battery pack, in addition to monitoring the temperature and charge and discharge parameters of the current battery pack, the temperature conditions of adjacent battery packs also need to be considered. First, the temperature detection value of the current battery pack is obtained, and then the temperature data of the surrounding adjacent battery packs is further collected. These data are used to calculate the temperature control operation index of the current battery pack; it not only reflects the temperature state of the current battery pack, but also takes into account the influence of the surrounding environment on the thermal conduction temperature of the current battery pack. Through this comprehensive evaluation, the system can more accurately adjust and control the operation of the cavity fan 32 to optimize the thermal management of the entire energy storage system and ensure that the battery pack operates at a safe and efficient temperature.

[0077] Specifically, at this time, the temperature control operation index takes into account the influence of the first temperature detection values ​​of several adjacent energy storage battery groups 31 on the temperature change trend of the current energy storage battery group 31; at this time, the calculation formula of the temperature control operation index of the current energy storage battery group 31 is further:

[0078]

[0079] Among them, θ i is the weight of the temperature influence coefficient of the adjacent battery group of the current energy storage battery group 31, M ij is the temperature influence coefficient of the adjacent battery pack of the current energy storage battery pack 31, ω ij is the temperature influence weight of the j-th energy storage battery group 31 adjacent to the current energy storage battery group 31, j is the sequence number of the m adjacent energy storage battery groups 31 of the current energy storage battery group 31, i1j is the first temperature exceeding standard index of the jth adjacent energy storage battery group 31, T i1j is the first temperature detection value of the jth adjacent energy storage battery group 31, T opt is the optimal operating temperature of the energy storage battery group 31, and k is a temperature adjustment constant.

[0080] Specifically, the operation state of the corresponding chamber fan 32 is controlled based on the temperature control operation index in S300, including:

[0081] S310, when the energy storage battery pack 31 is in a non-charging and discharging state and the temperature control operation index is lower than a first preset temperature control threshold, the corresponding cavity fan 32 is controlled to operate in a minimum power mode.

[0082] S320, when the energy storage battery pack 31 is in a charging and discharging state or the temperature control operation index is higher than a first preset temperature control threshold, the corresponding cavity fan 32 is controlled to operate in an economic mode.

[0083] S330, when the energy storage battery pack 31 is in a charging and discharging state and the temperature control operation index is higher than a first preset temperature control threshold, the corresponding cavity fan 32 is controlled to operate in a rated power mode.

[0084] When the energy storage battery pack 31 is not in a charging and discharging state and the temperature control operation index is lower than the set temperature control threshold, the cavity fan 32 will operate in the lowest power mode to reduce energy consumption and keep the battery pack within an appropriate temperature range. If the battery pack is charging and discharging or the temperature control operation index exceeds the first preset temperature control threshold, the cavity fan 32 is controlled to switch to the economy mode when only one of the above conditions is met to provide an appropriate cooling effect. Finally, when the battery pack is in a charging and discharging state and the temperature control operation index is significantly higher than the temperature control threshold, the cavity fan 32 will operate in the rated power mode to ensure that the temperature of the battery pack is effectively controlled to prevent overheating. The above control strategy can achieve the best balance between energy efficiency and temperature management, ensuring that the energy storage system can operate stably and reliably under different operating conditions.

[0085] The operating conditions of the above-mentioned economic mode refer to the situation that the energy storage battery pack 31 is in a charging and discharging state or the temperature control operation index is higher than the first preset temperature control threshold. In this mode, the system will control the corresponding cavity fan 32 to operate in an intermediate state that is neither the lowest power nor the highest rated power, aiming to balance energy efficiency and cooling requirements. This operating mode is usually adopted when the battery pack requires a certain degree of cooling, but does not require maximum power cooling, so as to achieve the optimization of energy efficiency while meeting the cooling requirements.

[0086] Optionally, the above-mentioned economic mode is to control the operation state of the chamber fan 32 to operate at a power of 20%-40% of the rated power.

[0087] Optionally, in a specific embodiment of the present invention, the integrated thermal management method for the compartmented energy storage system further includes:

[0088] S411, when the ratio of the number of energy storage battery packs 31 whose temperature control operation index in the compartmented energy storage system is higher than the first preset temperature control threshold to the number of all energy storage battery packs 31 is greater than or equal to the first preset ratio value, the air outlet fan 22 and the air inlet fan 24 are controlled to operate in rated power mode.

[0089] S412, when the ratio of the number of energy storage battery groups 31 whose temperature control operation index in the compartmented energy storage system is higher than the first preset temperature control threshold to the number of all energy storage battery groups 31 is less than the first preset ratio value and greater than or equal to the second preset ratio value, the air outlet fan 22 and the air inlet fan 24 are controlled to operate in economy mode.

[0090] S413, when the ratio of the number of energy storage battery packs 31 whose temperature control operation index in the compartmented energy storage system is higher than the first preset temperature control threshold to the number of all energy storage battery packs 31 is less than the second preset ratio value, the air outlet fan 22 and the air inlet fan 24 are controlled to operate in the lowest power mode.

[0091] According to the relationship between the temperature control operation index and the preset temperature control threshold and ratio value, the operation mode of the outlet fan 22 and the inlet fan 24 on the compartment energy storage system box 1 is adjusted. If the temperature control operation index of more than a certain proportion of the energy storage battery packs 31 exceeds the first preset temperature control threshold, the outlet fan 22 and the inlet fan 24 will operate in the rated power mode to provide the maximum cooling effect in the box 1. If the number of energy storage battery packs 31 exceeding the temperature control threshold is between two preset ratio values, the outlet fan 22 and the inlet fan 24 will operate in the economic mode to balance the cooling effect and energy consumption. If the number of battery packs exceeding the temperature control threshold is lower than the second preset ratio value, the outlet fan 22 and the inlet fan 24 will operate in the minimum power mode to reduce energy consumption. The above control method dynamically adjusts the operating state of the fan according to the thermal load of the system to ensure that the temperature of the energy storage system is controlled within the optimal range while taking energy efficiency into consideration.

[0092] Optionally, in another specific embodiment of the present invention, the integrated thermal management method for the compartmented energy storage system further includes:

[0093] S421, when the sum of the temperature control operation indexes of all the energy storage battery groups 31 in the compartmented energy storage system is greater than or equal to the second temperature control threshold, the air outlet fan 22 and the air inlet fan 24 are controlled to operate in the rated power mode.

[0094] S422, when the sum of the temperature control operation indexes of all the energy storage battery groups 31 in the compartmented energy storage system is less than the second temperature control threshold and greater than or equal to the third temperature control threshold, the air outlet fan 22 and the air inlet fan 24 are controlled to operate in economic mode.

[0095] S423, when the sum of the temperature control operation indexes of all the energy storage battery groups 31 in the compartmented energy storage system is less than the third temperature control threshold, the air outlet fan 22 and the air inlet fan 24 are controlled to operate in the lowest power mode.

[0096] The fan operation mode is determined by comparing the sum of the temperature control operation indexes of all the energy storage battery packs 31 with the preset temperature control threshold. The above control method generally considers the total heating state in the box 1. When the sum of the temperature control operation indexes reaches the corresponding preset threshold, it proves that the air inlet fan 24 and the air outlet fan 22 on the box 1 need to be adjusted accordingly, so that the operating power of the two is increased by one level to operate in the economic mode or the rated power mode. If the sum of the temperature control operation indexes reaches or exceeds the highest threshold, the fan will operate in the rated power mode to provide the maximum cooling effect. If the sum of the temperature control operation indexes is lower than the second temperature control threshold but higher than the third temperature control threshold, the fan will switch to the economic mode to achieve a balance between cooling efficiency and energy consumption. Finally, if the sum of the temperature control operation indexes is lower than the third temperature control threshold, the fan will operate in the lowest power mode to reduce energy consumption. The above control mode allows the system to dynamically adjust the fan operation according to the overall heat load, ensuring temperature control while optimizing energy efficiency.

[0097] Furthermore, the outlet fan 22 and the inlet fan 24 operate in the lowest power mode in the initial state. In the initial state, the outlet fan 22 and the inlet fan 24 are both set to start and operate in the lowest power mode to reduce energy consumption when the system is started or when there is no significant heat load. With the operation of the system and the real-time monitoring of the battery pack temperature, the operation mode of the outlet fan 22 and the inlet fan 24 on the box 1 will be adjusted accordingly according to the temperature control operation index and the preset temperature control threshold to ensure that the temperature of the energy storage system is controlled within the optimal range while taking into account energy efficiency and cooling effect.

[0098] Accordingly, please refer to Figure 3 The second aspect of the embodiment of the present invention provides an integrated thermal management device for a compartmented energy storage system. The compartmented energy storage system is controlled by the above-mentioned integrated thermal management method for the compartmented energy storage system. The compartmented energy storage system includes: a box body 1, an air cooling system and a plurality of battery compartments arranged in parallel. The air cooling system includes an air outlet 21, an air outlet fan 22, an air inlet 23, an air inlet fan 24 and a main air duct 25 connecting the air outlet and the air inlet arranged on the box body 1. Each battery compartment includes a plurality of battery accommodating cavities arranged in a planar matrix. Each battery accommodating cavity includes a cavity air duct 33 and an energy storage battery pack 31. The cavity air duct inlet and the cavity air duct outlet of each cavity air duct 33 are both connected to the main air duct 25 of the box body 1. The cavity air duct inlet and the cavity air duct outlet of the battery accommodating cavity are both provided with a cavity fan 32 corresponding to the energy storage battery pack 31. The thermal management device includes:

[0099] A battery status acquisition module Z1, which is used to obtain the real-time temperature value, charge and discharge status and charge and discharge times of the energy storage battery pack 31 in each battery receiving cavity;

[0100] A temperature control coefficient calculation module Z2, which is used to calculate the temperature control operation index of the energy storage battery group 31 based on the real-time temperature value, charge and discharge state and charge and discharge times of each energy storage battery group 31;

[0101] The air cooling mode control module Z3 is used to control the operating state of the corresponding cavity fan 32 based on the temperature control operation index.

[0102] The various modules in the above-mentioned integrated thermal management device for a compartmented energy storage system can be refined into several functional units according to the various specific steps of the integrated thermal management method for a compartmented energy storage system to perform functions corresponding to the steps, and this application will not go into details here.

[0103] Accordingly, a third aspect of an embodiment of the present invention provides an electronic device, comprising: at least one processor; and a memory connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes the above-mentioned integrated thermal management method for the compartmented energy storage system.

[0104] Accordingly, a fourth aspect of an embodiment of the present invention provides a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the above-mentioned integrated thermal management method for a compartmented energy storage system.

[0105] The embodiment of the present invention is intended to protect the integrated thermal management method of the compartmented energy storage system, which is characterized in that the compartmented energy storage system includes: a box body, an air cooling system and a plurality of battery compartments arranged in parallel, the air cooling system includes an air outlet, an air outlet fan, an air inlet, an air inlet fan and a main air duct connecting the air outlet and the air inlet arranged on the box body, each battery compartment includes a plurality of battery accommodating cavities arranged in a planar matrix, each battery accommodating cavity includes a cavity air duct and an energy storage battery pack, the cavity air duct inlet and cavity air duct outlet of each cavity air duct are both connected to the main air duct of the box body, and the cavity air duct inlet and cavity air duct outlet of the battery accommodating cavity are both provided with cavity fans corresponding to the energy storage battery pack, and the thermal management method includes the following steps: obtaining the real-time temperature value, charge and discharge state and charge and discharge times of the energy storage battery pack in each battery accommodating cavity; calculating the temperature control operation index of the energy storage battery pack based on the real-time temperature value, charge and discharge state and charge and discharge times of each energy storage battery pack; and controlling the operation state of the corresponding cavity fan based on the temperature control operation index. The above technical scheme has the following effects:

[0106] 1. By real-time monitoring of the temperature, charge and discharge status and number of energy storage battery packs in each battery compartment, this method can accurately calculate the temperature control operation index, thereby achieving precise control of the temperature in each battery compartment and ensuring that the battery operates within the optimal performance and safe temperature range. ;

[0107] 2. Dynamically adjust the operating status of the cavity fan according to the temperature control operation index, which can optimize the fan's energy efficiency while ensuring the battery's heat dissipation needs, reduce unnecessary energy consumption, and improve the energy utilization efficiency of the entire energy storage system;

[0108] 3. By managing the battery compartments in compartments and combining the temperature control operation index to intelligently control the fan, it is possible to effectively prevent battery overheating, reduce the risk of thermal runaway, enhance the reliability and stability of the energy storage system, and extend the battery life.

[0109] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0110] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0111] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0112] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for integrated thermal management of a compartmented energy storage system, characterized in that: The compartment-type energy storage system comprises: a box body (1), an air cooling system and a plurality of battery compartments arranged in parallel, the air cooling system comprising an air outlet (21), an air outlet fan (22), an air inlet (23), an air inlet fan (24) and a main air duct (25) connecting the air outlet (21) and the air inlet (22) arranged on the box body (1), each of the battery compartments comprising a plurality of battery accommodating cavities arranged in a planar matrix, each battery accommodating cavity comprising a cavity air duct (33) and an energy storage battery pack (31), the cavity air duct inlet and cavity air duct outlet of each cavity air duct (33) being in communication with the main air duct (25) of the box body (1), and the cavity air duct inlet and cavity air duct outlet of the battery accommodating cavity being provided with a cavity fan (32) corresponding to the energy storage battery pack (31), and the thermal management method comprising the following steps: Acquiring the real-time temperature value, charge and discharge state, and charge and discharge times of the energy storage battery pack (31) in each battery receiving cavity; Calculating the temperature control operation index of the energy storage battery pack (31) based on the real-time temperature value, charge and discharge state, and charge and discharge times of each energy storage battery pack; Based on the temperature control operation index, the operation state of the corresponding cavity fan (32) is controlled.

2. The integrated thermal management method for compartmented energy storage system according to claim 1, characterized in that: The battery accommodating cavity is provided with a first temperature sensor located on the side wall of the energy storage battery pack (31) and a second temperature sensor arranged inside the energy storage battery pack (31); The step of obtaining the real-time temperature value, charge and discharge state, and charge and discharge times of the energy storage battery pack (31) in each battery receiving cavity comprises: Acquiring a first temperature detection value detected by the first temperature sensor, a second temperature detection value detected by the second temperature sensor, and the number of times the energy storage battery pack (31) is charged and discharged in a preset cycle; Based on the first temperature detection value, the second temperature detection value, the number of charge and discharge times, and the charge and discharge state, the temperature control operation index of the energy storage battery pack (31) is calculated, and based on the temperature control operation index, the operation state of the corresponding cavity fan (32) is controlled.

3. The integrated thermal management method for compartmented energy storage system according to claim 2, characterized in that: The temperature control operation index K i The calculation formula is: K i =a i ×(1-O i1 )+b i ×(1-O i2 )+η i ×C iN +λ i ×S i ; Wherein, i is the serial number of the energy storage battery group (31), α i is the weight coefficient of the first temperature detection value, β i is the weight coefficient of the second temperature detection value, η i is the weight coefficient of the number of charge and discharge times, λ i is the weight coefficient of the charge and discharge state, O i1 is the first temperature excess index, O i2 is the second temperature excess index, C iN S is the charge and discharge times impact index, i is the charge and discharge state influence index, T i1 is the first temperature detection value, T MAX is the preset temperature threshold, T i2 is the second temperature detection value, N i is the current charge and discharge times, N MAX is the maximum number of charge and discharge times, P charge is the charging power of the energy storage battery pack (31), P max is the maximum charge and discharge power of the energy storage battery pack (31), P discharge is the discharge power of the energy storage battery group (31).

4. The integrated thermal management method for compartmented energy storage system according to claim 3, characterized in that: The calculating of the temperature control operation index of the energy storage battery pack further includes: Acquiring first temperature detection values ​​of a plurality of adjacent energy storage battery groups (31); Calculating the temperature control operation index of the current energy storage battery group (31) based on first temperature detection values ​​of a plurality of adjacent energy storage battery groups (31); The calculation formula of the temperature control operation index is: Among them, θ i is the weight of the temperature influence coefficient of the adjacent battery group of the current energy storage battery group (31), M ij is the temperature influence coefficient of the adjacent battery group of the current energy storage battery group (31), ω ij is the temperature influence weight of the jth energy storage battery group (31) adjacent to the current energy storage battery group (31), j is the sequence number of the m adjacent energy storage battery groups (31) to the current energy storage battery group (31), O i1j is the first temperature exceeding standard index of the jth adjacent energy storage battery group (31), T i1j is the first temperature detection value of the jth adjacent energy storage battery group (31), T opt is the optimal operating temperature of the energy storage battery group (31), and k is a temperature adjustment constant.

5. The integrated thermal management method for compartmented energy storage system according to claim 1, characterized in that: The controlling the operating state of the corresponding chamber fan based on the temperature control operating index includes: When the energy storage battery pack (31) is in a non-charging and discharging state and the temperature control operation index is lower than a first preset temperature control threshold, controlling the corresponding cavity fan (32) to operate in a minimum power mode; When the energy storage battery pack (31) is in a charging and discharging state or the temperature control operation index is higher than a first preset temperature control threshold, controlling the corresponding cavity fan (32) to operate in an economic mode; When the energy storage battery pack (31) is in a charging and discharging state and the temperature control operation index is higher than a first preset temperature control threshold, the corresponding cavity fan (32) is controlled to operate in a rated power mode.

6. The integrated thermal management method for compartmented energy storage system according to claim 5, characterized in that: Also includes: When the ratio of the number of the energy storage battery groups (31) whose temperature control operation index is higher than a first preset temperature control threshold in the compartmented energy storage system to the number of all energy storage battery groups (31) is greater than or equal to a first preset ratio value, the air outlet fan (22) and the air inlet fan (24) are controlled to operate in a rated power mode; When the ratio of the number of the energy storage battery groups (31) whose temperature control operation index is higher than the first preset temperature control threshold in the compartment-type energy storage system to the number of all energy storage battery groups (31) is less than the first preset ratio value and greater than or equal to the second preset ratio value, the air outlet fan (22) and the air inlet fan (24) are controlled to operate in an economic mode; When the ratio of the number of energy storage battery groups (31) whose temperature control operation index in the compartmented energy storage system is higher than a first preset temperature control threshold to the number of all energy storage battery groups (31) is less than a second preset ratio value, the air outlet fan (22) and the air inlet fan (24) are controlled to operate in a minimum power mode.

7. The integrated thermal management method for compartmented energy storage system according to claim 5, characterized in that: Also includes: When the sum of the temperature control operation indexes of all the energy storage battery groups (31) in the compartmented energy storage system is greater than or equal to a second temperature control threshold, controlling the air outlet fan (22) and the air inlet fan (24) to operate in a rated power mode; When the sum of the temperature control operation indexes of all the energy storage battery groups (31) in the compartmented energy storage system is less than the second temperature control threshold and greater than or equal to the third temperature control threshold, the air outlet fan (22) and the air inlet fan (24) are controlled to operate in an economic mode; When the sum of the temperature control operation indexes of all the energy storage battery groups (31) in the compartmented energy storage system is less than a third temperature control threshold, the air outlet fan (22) and the air inlet fan (24) are controlled to operate in a minimum power mode.

8. The integrated thermal management method for a compartmented energy storage system according to any one of claims 1 to 7, characterized in that: The air outlet fan (22) and the air inlet fan (24) operate in a minimum power mode in an initial state.

9. A compartment-type energy storage system integrated thermal management device, characterized in that: The sub-compartment energy storage system is controlled by the integrated thermal management method of the sub-compartment energy storage system according to any one of claims 1 to 8, wherein the sub-compartment energy storage system comprises: a housing (1), an air cooling system and a plurality of battery compartments arranged in parallel, the air cooling system comprising an air outlet (21), an air outlet fan (22), an air inlet (23), an air inlet fan (24) and a main air duct (25) connecting the air outlet (21) and the air inlet (23) arranged on the housing (1), each of the battery compartments comprising a plurality of battery accommodating cavities arranged in a planar matrix, each of the battery accommodating cavities comprising a cavity air duct (33) and an energy storage battery pack (31), the cavity air duct inlet and cavity air duct outlet of each cavity air duct (33) being connected to the main air duct (25) of the housing (1), and the cavity air duct inlet and cavity air duct outlet of the battery accommodating cavity being provided with a cavity fan (32) corresponding to the energy storage battery pack (31), and the thermal management device comprising: A battery status acquisition module, which is used to acquire the real-time temperature value, charge and discharge status, and charge and discharge times of the energy storage battery pack (31) in each battery receiving cavity; A temperature control coefficient calculation module, which is used to calculate the temperature control operation index of the energy storage battery group (31) based on the real-time temperature value, charge and discharge state and charge and discharge times of each energy storage battery group (31); An air cooling mode control module is used to control the operating state of the corresponding cavity fan (32) based on the temperature control operation index.

10. An electronic device, characterized in that: include: at least one processor; And a memory connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor executes the integrated thermal management method for the compartmented energy storage system as described in any one of claims 1-8.

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