Thermal management method, device, electronic device and storage medium for energy storage system

Abstract

The present application proposes a thermal management method, device, electronic device and storage medium for an energy storage system, wherein the method includes: when the energy storage system is in a charging and discharging state and the thermal management module of the energy storage system is turned off, obtaining the temperature change parameters of the energy storage system; in response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting the set conditions, starting the thermal management module; during the current charging and discharging process of the energy storage system, determining whether to turn off the thermal management module based on the temperature change parameters. Thus, during the current charging and discharging process of the energy storage system, the charging and discharging temperature change parameters of the energy storage system itself can be taken into consideration to determine whether to turn off the thermal management module, that is, the thermal management module can be turned off in advance before the charging and discharging ends, which can shorten the operating time of the thermal management module and reduce the power consumption of the thermal management module.

Description

Technical Field

[0001] The present application relates to the field of energy and power technology, and in particular to a thermal management method, device, electronic device and storage medium for an energy storage system. Background Art

[0002] In related technologies, in order to ensure that the energy storage system maintains a suitable temperature during the charging and discharging process, the thermal management module of the energy storage system is usually turned off at the end of charging and discharging. The operating time of the thermal management module is relatively long, resulting in high power consumption of the thermal management module. Summary of the invention

[0003] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the first objective of the present application is to propose a thermal management method for an energy storage system.

[0005] The second objective of the present application is to provide a thermal management device for an energy storage system.

[0006] The third objective of the present application is to provide an electronic device.

[0007] A fourth objective of the present application is to provide a computer-readable storage medium.

[0008] A fifth object of the present application is to provide a computer program product.

[0009] To achieve the above-mentioned purpose, the first aspect of the present application proposes a thermal management method for an energy storage system, comprising: when the energy storage system is in a charging and discharging state and the thermal management module of the energy storage system is turned off, obtaining the temperature change parameters of the energy storage system; in response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting the set conditions, starting the thermal management module; during the current charging and discharging process of the energy storage system, determining whether to turn off the thermal management module based on the temperature change parameters.

[0010] To achieve the above-mentioned purpose, the second aspect embodiment of the present application proposes a thermal management device for an energy storage system, including: an acquisition module, used to acquire the temperature change parameters of the energy storage system when the energy storage system is in a charging and discharging state and the thermal management module of the energy storage system is turned off; a start-up module, used to start the thermal management module in response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting the set conditions; a determination module, used to determine whether to turn off the thermal management module based on the temperature change parameters during the current charging and discharging process of the energy storage system.

[0011] To achieve the above-mentioned purpose, the third aspect embodiment of the present application proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method described in the first aspect embodiment above.

[0012] To achieve the above-mentioned purpose, the fourth aspect embodiment of the present application proposes a computer-readable storage medium, in which computer execution instructions are stored. When the computer execution instructions are executed by a processor, they are used to implement the method described in the first aspect embodiment above.

[0013] To achieve the above-mentioned purpose, the fifth aspect of the present application proposes a computer program product, including a computer program, which, when executed by a processor, implements the method described in the first aspect of the present application.

[0014] The thermal management method, device, electronic device and storage medium of the energy storage system provided in the present application obtain the temperature change parameters of the energy storage system when the energy storage system is in a charging and discharging state and the thermal management module of the energy storage system is turned off. In response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting the set conditions, the thermal management module is started. During the current charging and discharging process of the energy storage system, it is determined whether to turn off the thermal management module based on the temperature change parameters. Therefore, during the current charging and discharging process of the energy storage system, the charging and discharging temperature change parameters of the energy storage system itself can be taken into consideration to determine whether to turn off the thermal management module, that is, the thermal management module can be turned off in advance before the charging and discharging ends, which can shorten the operating time of the thermal management module and reduce the power consumption of the thermal management module.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 A schematic diagram of a flow chart of a thermal management method for an energy storage system provided in an embodiment of the present application;

[0018] Figure 2 A schematic flow chart of another thermal management method for an energy storage system provided in an embodiment of the present application;

[0019] Figure 3 A schematic flow chart of another thermal management method for an energy storage system provided in an embodiment of the present application;

[0020] Figure 4 A schematic flow chart of a thermal management method for an energy storage system according to a specific example of the present application;

[0021] Figure 5 A schematic flow chart of a thermal management method for an energy storage system according to another specific example of the present application;

[0022] Figure 6 A schematic diagram of the structure of a thermal management device for an energy storage system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments 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 intended to be used to explain the present application, and should not be construed as limiting the present application.

[0024] The following describes a thermal management method, device, electronic device, and storage medium for an energy storage system according to an embodiment of the present application with reference to the accompanying drawings.

[0025] Figure 1 A schematic flow chart of a thermal management method for an energy storage system provided in an embodiment of the present application.

[0026] In related technologies, in order to ensure that the energy storage system maintains a suitable temperature during the charging and discharging process, the thermal management module of the energy storage system is usually turned off at the end of charging and discharging. The operating time of the thermal management module is relatively long, resulting in high power consumption of the thermal management module.

[0027] To address this problem, an embodiment of the present application provides a thermal management method for an energy storage system. During the current charging and discharging process of the energy storage system, the charging and discharging temperature change parameters of the energy storage system itself can be taken into consideration to determine whether to shut down the thermal management module. That is, the thermal management module can be shut down in advance before the charging and discharging is completed, which can shorten the operating time of the thermal management module and reduce the power consumption of the thermal management module.

[0028] like Figure 1 As shown, the method comprises the following steps:

[0029] S101, when the energy storage system is in a charging and discharging state and a thermal management module of the energy storage system is turned off, obtaining a temperature change parameter of the energy storage system.

[0030] It should be noted that Figures 1 to 5 The execution subject of the thermal management method of the energy storage system shown is an electronic device, such as a BMS (Battery Management System), an EMS (Electrical Management System), a server, etc.

[0031] It should be noted that the energy storage system is composed of multiple battery packs, and a battery pack is composed of multiple single cells. There are no excessive restrictions on the thermal management module, for example, it may include a liquid cooling module (such as a liquid cooling unit), an air cooling module, an electric heating module, etc.

[0032] In the embodiment of the present application, the temperature change parameter is obtained when the energy storage system is in a charge and discharge state and the thermal management module is turned off, that is, the temperature change parameter is the charge and discharge temperature change parameter of the energy storage system itself. It is understandable that the temperature change parameters of different energy storage systems may be different, and the temperature change parameters of the same energy storage system under different working conditions may be different, where the working conditions may include ambient temperature, power, and SOC (State of Charge), etc.

[0033] There are not too many restrictions on the temperature change parameters, for example, they may include temperature rise parameters, temperature drop parameters, etc. The temperature rise parameters may include temperature rise value (referred to as temperature rise), temperature rise rate (referred to as temperature rise rate), and temperature drop parameters may include temperature drop value, temperature drop rate, etc.

[0034] Exemplarily, obtaining the temperature change parameter may include obtaining multiple sample temperature change parameters of the energy storage system when the energy storage system is in a charging and discharging state and a thermal management module of the energy storage system is turned off, and obtaining an average value of the multiple sample temperature change parameters as the final temperature change parameter.

[0035] S102, in response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting a set condition, starting a thermal management module.

[0036] It should be noted that there are no excessive restrictions on the current temperature, for example, it may include the average temperature Tavg of multiple temperature measurement points in the energy storage system, the maximum temperature Tmax of multiple temperature measurement points in the energy storage system, the minimum temperature Tmin of multiple temperature measurement points in the energy storage system, etc. There are no excessive restrictions on the set conditions.

[0037] Exemplarily, in response to the energy storage system being in a charge-discharge state and the current temperature of the energy storage system meeting a set condition, starting the thermal management module includes starting the thermal management module in response to the energy storage system being in a charge-discharge state and the Tmax of the energy storage system being greater than or equal to a third set threshold and the Tavg of the energy storage system being greater than or equal to a fourth set threshold. After starting the thermal management module, it also includes controlling the thermal management module to enter a cooling mode.

[0038] Exemplarily, in response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting the set condition, starting the thermal management module includes starting the thermal management module in response to the energy storage system being in a charging and discharging state and the Tavg of the energy storage system being less than a fifth set threshold. After starting the thermal management module, it also includes controlling the thermal management module to enter a heating mode.

[0039] It should be noted that there are no excessive restrictions on the third to fifth set thresholds, the third set threshold is greater than the fourth set threshold, and the fourth set threshold is greater than the fifth set threshold. For example, the fifth set threshold = Tstart-2, Tstart is the set temperature of the energy storage system at the start of charging and discharging.

[0040] Exemplarily, obtaining Tstart includes obtaining an average value of a plurality of sample temperatures of the energy storage system at the start of charging and discharging as Tstart.

[0041] S103, during the current charging and discharging process of the energy storage system, determining whether to shut down the thermal management module based on the temperature change parameter.

[0042] In related technologies, in order to ensure that the energy storage system maintains a suitable temperature during the charging and discharging process, the thermal management module of the energy storage system is usually turned off at the end of charging and discharging. The operating time of the thermal management module is relatively long, resulting in high power consumption of the thermal management module.

[0043] In this solution, during the current charging and discharging process of the energy storage system, the charging and discharging temperature change parameters of the energy storage system itself can be taken into consideration to determine whether to shut down the thermal management module. That is, the thermal management module can be shut down in advance before the charging and discharging is completed, which can shorten the operating time of the thermal management module and reduce the power consumption of the thermal management module.

[0044] Exemplarily, the temperature change parameter includes a temperature rise parameter, and based on the temperature change parameter, determining whether to shut down the thermal management module includes shutting down the thermal management module in response to the thermal management module being in cooling mode, the current temperature dropping to a first set temperature, and the temperature rise parameter being less than the first set value. It is understandable that when the thermal management module is in cooling mode, if the current temperature of the energy storage system is low and the temperature rise parameter is small, if the thermal management module is shut down, the temperature rise of the energy storage system is small, and the temperature of the energy storage system is still low, and the thermal management module can be shut down in advance.

[0045] Exemplarily, the temperature change parameter includes a temperature rise parameter, and based on the temperature change parameter, determining whether to shut down the thermal management module includes shutting down the thermal management module in response to the thermal management module being in the heating mode, the current temperature rising to the second set temperature, and the temperature rise parameter being greater than the second set value. It is understandable that when the thermal management module is in the heating mode, if the current temperature of the energy storage system is high and the temperature rise parameter is large, if the thermal management module is shut down, the temperature rise of the energy storage system is large, and the temperature of the energy storage system is still high, the thermal management module can be shut down in advance.

[0046] In summary, according to the thermal management method of the energy storage system of the embodiment of the present application, when the energy storage system is in a charging and discharging state and the thermal management module of the energy storage system is turned off, the temperature change parameters of the energy storage system are obtained, and in response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting the set conditions, the thermal management module is started, and during the current charging and discharging process of the energy storage system, it is determined whether to turn off the thermal management module based on the temperature change parameters. Therefore, during the current charging and discharging process of the energy storage system, the charging and discharging temperature change parameters of the energy storage system itself can be taken into account to determine whether to turn off the thermal management module, that is, the thermal management module can be turned off in advance before the charging and discharging ends, which can shorten the operating time of the thermal management module and reduce the power consumption of the thermal management module.

[0047] An embodiment of the present application provides another thermal management method for an energy storage system.

[0048] like Figure 2 As shown, the method may include the following steps:

[0049] S201, when the energy storage system is in a charging and discharging state and a thermal management module of the energy storage system is turned off, obtaining a temperature change parameter of the energy storage system.

[0050] S202 , in response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting a set condition, starting a thermal management module.

[0051] For the relevant contents of steps S201 - S202 , please refer to the above embodiment and will not be described again here.

[0052] S203, during the current charging and discharging process of the energy storage system, based on the current temperature and the temperature change parameter, obtaining a predicted temperature of the energy storage system at the end time of the current charging and discharging process.

[0053] In the embodiments of the present disclosure, based on the current temperature and the temperature change parameter, the predicted temperature of the energy storage system at the end time of the current charging and discharging process is obtained, including the following possible implementations:

[0054] Method 1: Based on the temperature change parameter, the predicted temperature rise of the energy storage system in the remaining time period of the current charging and discharging process is obtained, and the predicted temperature is obtained based on the current temperature and the predicted temperature rise.

[0055] Therefore, the charge and discharge temperature change parameters of the energy storage system itself can be taken into account to obtain the predicted temperature rise of the energy storage system in the remaining time period of the current charge and discharge process, and the current temperature and predicted temperature rise of the energy storage system can be taken into account to obtain the predicted temperature.

[0056] In the embodiment of the present application, the predicted temperature rise refers to the predicted value of the temperature rise of the energy storage system from the current moment to the end moment of the current charging and discharging process when the thermal management module is turned off.

[0057] Exemplarily, the temperature change parameter includes a temperature change rate, and based on the temperature change parameter, a predicted temperature rise of the energy storage system in the remaining time period of the current charge and discharge process is obtained, including obtaining the remaining duration of the current charge and discharge process of the energy storage system, and obtaining the predicted temperature rise based on the temperature change rate and the remaining duration. It should be noted that the remaining duration refers to the duration between the current moment and the end moment of the current charge and discharge process. Thus, the predicted temperature rise can be obtained by taking into account the charge and discharge temperature change rate and the remaining charge and discharge time of the energy storage system itself.

[0058] For example, taking the temperature change parameter as the temperature rise rate, the process of obtaining the predicted temperature rise is as follows:

[0059] ΔT=v×t

[0060] Among them, ΔT is the predicted temperature rise, v is the temperature rise rate, and t is the remaining time.

[0061] The process of obtaining the predicted temperature is as follows:

[0062] T ′ =Tavg+ΔT

[0063] Among them, T ′ To predict temperature.

[0064] Exemplarily, the temperature change parameter includes a temperature change value, and based on the temperature change parameter, a predicted temperature rise of the energy storage system in the remaining time period of the current charging and discharging process is obtained, including responding to the temperature change parameter being a temperature rise value, using the temperature rise value as the predicted temperature rise, and responding to the temperature change parameter being a temperature drop value, using the opposite of the temperature drop value as the predicted temperature rise.

[0065] Method 2: In response to the temperature change parameter being a temperature rise value, a sum of the current temperature and the temperature rise value is obtained as the predicted temperature.

[0066] Mode 3: In response to the temperature change parameter being a temperature drop value, a difference between the current temperature and the temperature drop value is obtained as the predicted temperature.

[0067] S204: Determine whether to shut down the thermal management module based on the predicted temperature.

[0068] In one embodiment, determining whether to shut down the thermal management module based on the predicted temperature includes shutting down the thermal management module in response to the thermal management module being in cooling mode and the predicted temperature being less than a first set threshold, and shutting down the thermal management module in response to the thermal management module being in heating mode and the predicted temperature being greater than a second set threshold. Thus, the thermal management module can be shut down in advance when the thermal management module is in cooling mode and the predicted temperature is low, or the thermal management module can be shut down in advance when the thermal management module is in heating mode and the predicted temperature is high.

[0069] It should be noted that there are no excessive restrictions on the first and second set thresholds. For example, the first set threshold is the set temperature Tend of the energy storage system at the end of charging and discharging, and the second set threshold is the set temperature Tstart of the energy storage system at the start of charging and discharging.

[0070] Exemplarily, obtaining Tend includes obtaining an average value of a plurality of sample temperatures of the energy storage system at the end of charging and discharging as Tend.

[0071] Illustratively, Tend may be 35 to 38° C. (Celsius).

[0072] In one embodiment, determining whether to shut down the thermal management module based on the predicted temperature includes shutting down the thermal management module in response to the predicted temperature being in a third setting interval, and continuing to operate the thermal management module in response to the predicted temperature not being in the third setting interval.

[0073] It should be noted that there is no excessive limitation on the third setting interval, for example, the third setting interval is 25 to 30°C.

[0074] In summary, according to the thermal management method of the energy storage system of the embodiment of the present application, based on the current temperature and the temperature change parameter, the predicted temperature of the energy storage system at the end of the current charging and discharging process is obtained, and based on the predicted temperature, it is determined whether to shut down the thermal management module. Therefore, during the current charging and discharging process of the energy storage system, the current temperature of the energy storage system and its own charging and discharging temperature change parameter can be taken into account to obtain the predicted temperature at the end of charging and discharging to determine whether to shut down the thermal management module.

[0075] An embodiment of the present application provides another thermal management method for an energy storage system.

[0076] like Figure 3 As shown, the method may include the following steps:

[0077] S301, in response to the energy storage system being in a static state, obtaining a time interval between a current moment and a start moment of a next charge and discharge process of the energy storage system.

[0078] S302: In response to the time interval being less than or equal to a set duration, starting a thermal management module.

[0079] In related technologies, in order to ensure that the energy storage system maintains an appropriate temperature during the charging and discharging process, the thermal management module of the energy storage system is usually started at the beginning of charging and discharging. The starting temperatures of the energy storage system during multiple charging and discharging processes vary greatly, resulting in low charging and discharging stability of the energy storage system.

[0080] In this solution, when the energy storage system is in a static state, the thermal management module can be started in advance before the next charge and discharge starts, so that the energy storage system reaches a suitable temperature at the beginning of charge and discharge, which helps to improve the consistency of the starting temperature of the energy storage system during multiple charge and discharge processes, and the energy storage system has higher charge and discharge stability.

[0081] It should be noted that there are no excessive restrictions on the set duration, for example, it can be 1 hour.

[0082] In one embodiment, when the energy storage system is in a static state, after starting the thermal management module, the thermal management module is also turned off in response to the thermal management module being in a cooling mode and the current temperature being less than or equal to a second set threshold, and the thermal management module is turned off in response to the thermal management module being in a heating mode and the current temperature being greater than or equal to the second set threshold. Thus, after starting the thermal management module in advance, when the thermal management module is in a cooling mode and the current temperature is low, the thermal management module is turned off, and when the thermal management module is in a heating mode and the current temperature is high, the thermal management module is turned off.

[0083] Exemplarily, in response to the thermal management module being in cooling mode and the current temperature being less than or equal to a second set threshold, the thermal management module is turned off, including in response to the thermal management module being in cooling mode and Tavg of the energy storage system being less than or equal to Tstart, the thermal management module is turned off.

[0084] In response to the thermal management module being in heating mode and the current temperature being greater than or equal to a second set threshold, shutting down the thermal management module includes shutting down the thermal management module in response to the thermal management module being in heating mode and Tavg of the energy storage system being greater than or equal to Tstart.

[0085] In summary, according to the thermal management method of the energy storage system of the embodiment of the present application, in response to the energy storage system being in a static state, the time interval between the current moment and the start moment of the next charge and discharge process of the energy storage system is obtained, and in response to the time interval being less than or equal to the set duration, the thermal management module is started. Thus, when the energy storage system is in a static state, the thermal management module can be started in advance before the next charge and discharge starts, so that the energy storage system reaches a suitable temperature at the beginning of charge and discharge, which helps to improve the consistency of the starting temperature of the energy storage system in multiple charge and discharge processes, and the charge and discharge stability of the energy storage system is relatively high.

[0086] Based on any of the above embodiments, in response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting the set conditions, the thermal management module is started, including starting the thermal management module in response to the energy storage system being in a charging and discharging state and the current temperature being not in a first set interval.

[0087] The method also includes starting the thermal management module in response to the energy storage system being in a static state and the current temperature being not in a second set interval, wherein the lower limit value of the first set interval is greater than or equal to the lower limit value of the second set interval, and / or the upper limit value of the first set interval is less than or equal to the upper limit value of the second set interval.

[0088] In the embodiment of the present application, the first setting interval refers to the target temperature interval when the energy storage system is in the charging and discharging state, and the second setting interval refers to the target temperature interval when the energy storage system is in the static state. The first setting interval is different from the second setting interval, and the value range of the second setting interval is wider than that of the first setting interval. Therefore, different target temperature intervals can be set for the energy storage system taking into account the working state of the energy storage system, thereby improving the flexibility of the target temperature interval. In addition, compared with the charging and discharging state, the target temperature interval of the energy storage system in the static state is wider, which can avoid frequent startup of the thermal management module when the energy storage system is in the static state, and help reduce the power consumption of the thermal management module.

[0089] It should be noted that there are no excessive restrictions on the first and second setting intervals. For example, the first setting interval is 25 to 30°C, and the second setting interval is 10 to 45°C.

[0090] Exemplarily, in response to the energy storage system being in a static state and the current temperature not being in the second set interval, starting the thermal management module includes starting the thermal management module in response to the energy storage system being in a static state and the Tmax of the energy storage system being greater than or equal to the sixth set threshold. After starting the thermal management module, it also includes controlling the thermal management module to enter a cooling mode.

[0091] Exemplarily, in response to the energy storage system being in a static state and the current temperature not being in the second set interval, starting the thermal management module includes starting the thermal management module in response to the energy storage system being in a static state and the Tmin of the energy storage system being less than or equal to the seventh set threshold. After starting the thermal management module, it also includes controlling the thermal management module to enter a heating mode.

[0092] Exemplarily, when the energy storage system is in a static state, after starting the thermal management module, the method also includes shutting down the thermal management module in response to the thermal management module being in a cooling mode and the Tavg of the energy storage system being less than or equal to an eighth set threshold, and shutting down the thermal management module in response to the thermal management module being in a heating mode and the Tavg of the energy storage system being greater than or equal to a ninth set threshold.

[0093] It should be noted that there are no excessive restrictions on the sixth to ninth setting thresholds, the sixth setting threshold is greater than the eighth setting threshold, the seventh setting threshold is less than the ninth setting threshold, and the sixth setting threshold is greater than the seventh setting threshold. For example, the sixth setting threshold is 40°C and the eighth setting threshold is 35°C.

[0094] For ease of understanding, Figure 4 As shown, an exemplary embodiment is provided. The thermal management module includes a liquid cooling unit.

[0095] First, the system (i.e., energy storage system) is started, the EMS output curve is input, and the BMS is powered on. The EMS output curve is also called the EMS planned charge and discharge curve, which carries the start and end time information of multiple charge and discharge processes of the energy storage system. It is determined whether the energy storage system is in a static state or a charge and discharge state.

[0096] Case 1: If the energy storage system is in a static state, it is judged that Tmax ≥ 40°C. If so, a liquid cooling start-up instruction 1 is issued, that is, the liquid cooling unit is started. It is judged that Tavg ≤ 35°C. If so, a liquid cooling shutdown instruction 0 is issued, that is, the liquid cooling unit is shut down.

[0097] It is determined that Tmax is ≥ 40°C. If not, it is determined whether the cooling requirement before charging and discharging is met.

[0098] It is determined that Tavg ≤ 35°C. If not, it is determined whether the cooling requirement before charging and discharging is met.

[0099] Judging whether the cooling demand before charging and discharging is met refers to obtaining the time interval between the current time and the start time of the next charging and discharging process of the energy storage system based on the EMS output curve, and judging whether the time interval is less than or equal to the set duration. If so, and the current temperature is greater than Tstart, the cooling demand before charging and discharging is met. If not, and / or the current temperature is less than or equal to Tstart, the cooling demand before charging and discharging is not met.

[0100] If the pre - charge - discharge cooling demand is met, issue the liquid - cooling start - up command 1, that is, start the liquid - cooling unit. Judge whether Tavg ≤ Tstart. If so, issue the liquid - cooling shutdown command 0, that is, shut down the liquid - cooling unit.

[0101] Case 2: If the energy storage system is in the charge - discharge state, judge whether Tmax ≥ T1 and Tavg ≥ T2. If so, issue the liquid - cooling start - up command 1, that is, start the liquid - cooling unit. Judge whether Tavg + v1 * remaining charge - discharge time < Tend. If so, issue the liquid - cooling shutdown command 0, that is, shut down the liquid - cooling unit. If not, return to execute the judgment on whether the energy storage system is in the static state or the charge - discharge state and its subsequent steps. Here, v1 is the temperature - rise rate 1, and the remaining charge - discharge time refers to the remaining duration of the current charge - discharge process of the energy storage system.

[0102] For ease of understanding, as Figure 5 shown, another exemplary embodiment is provided. The thermal management module includes a liquid - cooling unit.

[0103] First, the system (i.e., the energy storage system) starts, the EMS output curve is input, and the BMS is powered on. Judge whether the energy storage system is in the static state or the charge - discharge state.

[0104] Case 1: If the energy storage system is in the static state, judge whether Tmin ≤ T3. If so, issue the liquid - cooling start - up command 1, that is, start the liquid - cooling unit. Judge whether Tavg ≥ T4. If so, issue the liquid - cooling shutdown command 0, that is, shut down the liquid - cooling unit.

[0105] Judge whether Tmin ≤ T3. If not, judge whether the pre - charge - discharge heating demand is met.

[0106] Judge whether Tavg ≥ T4. If not, judge whether the pre - charge - discharge heating demand is met.

[0107] Judging whether the pre - charge - discharge heating demand is met means, based on the EMS output curve, obtaining the time interval between the current moment and the start moment of the next charge - discharge process of the energy storage system, and judging whether the time interval is less than or equal to the set duration. If so, and the current temperature is less than Tstart, then the pre - charge - discharge heating demand is met. If not, and / or, the current temperature is greater than or equal to Tstart, then the pre - charge - discharge heating demand is not met.

[0108] If the pre - charge - discharge heating demand is met, issue the liquid - cooling start - up command 1, that is, start the liquid - cooling unit. Judge whether Tavg ≥ Tstart. If so, issue the liquid - cooling shutdown command 0, that is, shut down the liquid - cooling unit.

[0109] Case 2: If the energy storage system is in the charge-discharge state, determine whether Tavg < Tstart - 2. If so, issue a liquid cooling start command 1, that is, start the liquid cooling unit. Determine whether Tavg + v2 * remaining charge-discharge time > Tstart. If so, issue a liquid cooling stop command 0, that is, turn off the liquid cooling unit. If not, return to execute the determination of whether the energy storage system is in the static state or the charge-discharge state and its subsequent steps. Wherein, v2 is the temperature rise rate 2, and v1 and v2 may be the same or different.

[0110] Based on any of the above embodiments, when the thermal management module includes a liquid cooling unit, after starting the liquid cooling unit, it further includes, in response to the liquid cooling unit being in the cooling mode, obtaining the minimum value between 15°C and (Tavg - 7)°C as the target temperature of the coolant, and controlling the frequency of the compressor based on the target temperature of the coolant.

[0111] In response to the liquid cooling unit being in the heating mode, obtain the maximum value between 18°C and (Tmin + 3)°C as the target temperature of the coolant, and control the frequency of the compressor based on the target temperature of the coolant.

[0112] To implement the above embodiments, the present application also proposes a thermal management device for an energy storage system.

[0113] Figure 6 It is a schematic structural diagram of a thermal management device for an energy storage system provided by an embodiment of the present application.

[0114] As Figure 6 shown, the thermal management device 100 of the energy storage system includes: an acquisition module 110, a start module 120, and a determination module 130.

[0115] The acquisition module 110 is configured to obtain the temperature change parameter of the energy storage system when the energy storage system is in the charge-discharge state and the thermal management module of the energy storage system is turned off.

[0116] The start module 120 is configured to start the thermal management module in response to the energy storage system being in the charge-discharge state and the current temperature of the energy storage system satisfying the set conditions.

[0117] The determination module 130 is configured to determine whether to turn off the thermal management module based on the temperature change parameter during the current charge-discharge process of the energy storage system.

[0118] Further, in a possible implementation manner of the embodiment of the present application, the determination module 130 is further configured to: obtain the predicted temperature of the energy storage system at the end moment of the current charge-discharge process based on the current temperature and the temperature change parameter; determine whether to turn off the thermal management module based on the predicted temperature.

[0119] Furthermore, in a possible implementation of an embodiment of the present application, the determination module 130 is also used to: obtain a predicted temperature rise of the energy storage system in the remaining time period of the current charging and discharging process based on the temperature change parameter; and obtain the predicted temperature based on the current temperature and the predicted temperature rise.

[0120] Furthermore, in a possible implementation of an embodiment of the present application, the temperature change parameter includes a temperature change rate, and the determination module 130 is further used to: obtain the remaining duration of the current charging and discharging process of the energy storage system; and obtain the predicted temperature rise based on the temperature change rate and the remaining duration.

[0121] Furthermore, in a possible implementation of the embodiment of the present application, the determination module 130 is also used to: in response to the thermal management module being in a cooling mode and the predicted temperature being less than a first set threshold, shut down the thermal management module; in response to the thermal management module being in a heating mode and the predicted temperature being greater than a second set threshold, shut down the thermal management module.

[0122] Furthermore, in a possible implementation of the embodiment of the present application, the first set threshold is a set temperature of the energy storage system at the end of charging and discharging; the second set threshold is a set temperature of the energy storage system at the start of charging and discharging.

[0123] Furthermore, in a possible implementation of the embodiment of the present application, the startup module 120 is also used to: in response to the energy storage system being in a static state, obtain the time interval between the current moment and the start moment of the next charging and discharging process of the energy storage system; in response to the time interval being less than or equal to the set duration, start the thermal management module.

[0124] Furthermore, in a possible implementation of the embodiment of the present application, when the energy storage system is in a static state, after the thermal management module is started, the determination module 130 is further used to: in response to the thermal management module being in a cooling mode and the current temperature being less than or equal to a second set threshold, shut down the thermal management module; in response to the thermal management module being in a heating mode and the current temperature being greater than or equal to the second set threshold, shut down the thermal management module.

[0125] Further, in a possible implementation of the embodiment of the present application, the startup module 120 is further used to: in response to the energy storage system being in a charging and discharging state and the current temperature being not in a first set interval, start the thermal management module;

[0126] The startup module 120 is further used to: in response to the energy storage system being in a static state and the current temperature being not in the second set interval, start the thermal management module; wherein,

[0127] The lower limit value of the first setting interval is greater than or equal to the lower limit value of the second setting interval, and / or the upper limit value of the first setting interval is less than or equal to the upper limit value of the second setting interval.

[0128] It should be noted that the aforementioned explanation of the embodiment of the thermal management method for an energy storage system is also applicable to the thermal management device for the energy storage system of this embodiment, and will not be repeated here.

[0129] In summary, the thermal management device of the energy storage system of the embodiment of the present application obtains the temperature change parameters of the energy storage system when the energy storage system is in a charging and discharging state and the thermal management module of the energy storage system is turned off. In response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting the set conditions, the thermal management module is started. During the current charging and discharging process of the energy storage system, it is determined whether to turn off the thermal management module based on the temperature change parameters. Therefore, during the current charging and discharging process of the energy storage system, the charging and discharging temperature change parameters of the energy storage system itself can be taken into account to determine whether to turn off the thermal management module, that is, the thermal management module can be turned off in advance before the charging and discharging ends, which can shorten the operating time of the thermal management module and reduce the power consumption of the thermal management module.

[0130] In order to implement the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the thermal management method of the energy storage system provided in the above embodiments.

[0131] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the thermal management method of the energy storage system provided by the above embodiments.

[0132] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which, when executed by a processor, implements the thermal management method of the energy storage system provided by the above embodiments.

[0133] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0134] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0135] The present application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, the present disclosure is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, the risk can be minimized by limiting data collection and deleting the data. In addition, when applicable, such personal information is de-identified to protect the privacy of the user.

[0136] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 application. In this specification, the schematic representations of the above terms do 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. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0137] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to control or imply relative importance or implicitly indicate the number of technical features controlled. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0138] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0139] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0140] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0141] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0142] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0143] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A thermal management method for an energy storage system, characterized in that: include: When the energy storage system is in a charging and discharging state and a thermal management module of the energy storage system is turned off, obtaining a temperature change parameter of the energy storage system; In response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting a set condition, starting the thermal management module; During the current charging and discharging process of the energy storage system, it is determined whether to shut down the thermal management module based on the temperature change parameter.

2. The method according to claim 1, characterized in that The determining whether to shut down the thermal management module based on the temperature change parameter includes: Based on the current temperature and the temperature change parameter, obtaining a predicted temperature of the energy storage system at the end time of the current charging and discharging process; Based on the predicted temperature, it is determined whether to shut down the thermal management module.

3. The method according to claim 2, characterized in that The step of obtaining the predicted temperature of the energy storage system at the end time of the current charging and discharging process based on the current temperature and the temperature change parameter includes: Based on the temperature change parameter, a predicted temperature rise of the energy storage system in the remaining time period of the current charging and discharging process is obtained; The predicted temperature is obtained based on the current temperature and the predicted temperature rise.

4. The method according to claim 3, characterized in that The temperature change parameter includes a temperature change rate, and obtaining a predicted temperature rise of the energy storage system in a remaining time period of the current charging and discharging process based on the temperature change parameter includes: Obtaining the remaining time of the current charging and discharging process of the energy storage system; The predicted temperature rise is obtained based on the temperature change rate and the remaining time.

5. The method according to claim 2, characterized in that: The determining whether to shut down the thermal management module based on the predicted temperature includes: In response to the thermal management module being in a cooling mode and the predicted temperature being less than a first set threshold, shutting down the thermal management module; In response to the thermal management module being in a heating mode and the predicted temperature being greater than a second set threshold, the thermal management module is turned off.

6. The method according to claim 5, characterized in that The first set threshold is a set temperature of the energy storage system at the end of charging and discharging; The second set threshold is a set temperature of the energy storage system at the start of charging and discharging.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: In response to the energy storage system being in a static state, obtaining a time interval between a current moment and a start moment of a next charge and discharge process of the energy storage system; In response to the time interval being less than or equal to a set duration, the thermal management module is started.

8. The method according to claim 7, characterized in that When the energy storage system is in a static state, after starting the thermal management module, the method further includes: In response to the thermal management module being in a cooling mode and the current temperature being less than or equal to a second set threshold, shutting down the thermal management module; In response to the thermal management module being in a heating mode and the current temperature being greater than or equal to a second set threshold, the thermal management module is turned off.

9. The method according to any one of claims 1 to 6, characterized in that: In response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting a set condition, starting the thermal management module includes: In response to the energy storage system being in a charging and discharging state and the current temperature being not in a first set interval, starting the thermal management module; The method further comprises: In response to the energy storage system being in a static state and the current temperature not being in a second set interval, the thermal management module is started; wherein, The lower limit value of the first setting interval is greater than or equal to the lower limit value of the second setting interval, and / or the upper limit value of the first setting interval is less than or equal to the upper limit value of the second setting interval.

10. A thermal management device for an energy storage system, characterized in that: include: An acquisition module, used to acquire temperature change parameters of the energy storage system when the energy storage system is in a charging and discharging state and a thermal management module of the energy storage system is turned off; A starting module, configured to start the thermal management module in response to the energy storage system being in a charging and discharging state and the current temperature of the energy storage system meeting a set condition; A determination module is used to determine whether to shut down the thermal management module based on the temperature change parameter during the current charging and discharging process of the energy storage system.

11. An electronic device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 9 when executed by a processor.

13. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the method according to any one of claims 1 to 9.

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