Liquid cooling unit type selection method of energy storage system, electronic equipment and readable storage medium

Abstract

The embodiment of the invention discloses a liquid cooling unit type selection method of an energy storage system, electronic equipment and a readable storage medium. The method comprises the steps that first heating power of a battery of the energy storage system in a first stage, second heating power of the battery in a second stage and heat absorption power of the battery are determined, then target refrigeration power of the liquid cooling unit is determined according to the first heating power and the second heating power, and target heating power of the liquid cooling unit is determined according to the heat absorption power. And finally, according to the target refrigeration power and the target heating power, model selection is conducted on the liquid cooling unit. The refrigerating capacity of the liquid cooling unit is designed by combining the heating power of the battery in different stages to meet the full life cycle operation requirement of the battery, so that the service life attenuation of the battery can be slowed down, the battery has a longer service life, the design quantity of the refrigerating capacity and the heating capacity of the liquid cooling unit is prevented from being too large, and the service life of the battery is prolonged. And therefore, the electric power cost can be saved while the full-life-cycle full-power stable operation of the battery can be ensured.

Description

Technical Field

[0001] The present application relates to the field of liquid cooling technology, and in particular to a method for selecting a liquid cooling unit for an energy storage system, an electronic device, and a readable storage medium. Background Art

[0002] Liquid cooling technology is a technology that uses liquid as a cooling medium to transfer the heat generated by the heating device to the outside of the device through the flow of liquid, thereby achieving heat dissipation.

[0003] With the rapid development of the energy storage battery industry, liquid cooling and liquid heating have become the most commonly used battery thermal management methods for energy storage containers. Cooling and heating are usually achieved through liquid cooling units, so the design of the cooling capacity and heating capacity of the liquid cooling unit is crucial for the stable operation of the battery system throughout its life cycle. Summary of the invention

[0004] The present application provides a method for selecting a liquid cooling unit for an energy storage system, an electronic device, and a readable storage medium, which can avoid excessive design of the cooling capacity and heating capacity of the liquid cooling unit, thereby saving electricity costs while ensuring stable full-power operation of the battery throughout its life cycle.

[0005] In a first aspect, the present application provides a method for selecting a liquid cooling unit of an energy storage system, which comprises:

[0006] Determine a first heat generation power of a battery of the energy storage system in a first stage, a second heat generation power in a second stage, and a heat absorption power of the battery;

[0007] Determine the target cooling power of the liquid cooling unit according to the first heating power and the second heating power, and determine the target heating power of the liquid cooling unit according to the heat absorption power;

[0008] Select the liquid cooling unit according to the target cooling power and target heating power.

[0009] In a second aspect, the present application also provides a liquid cooling unit selection device for an energy storage system, which includes:

[0010] A first determining unit, used to determine a first heating power of a battery of the energy storage system in a first stage, a second heating power in a second stage, and a heat absorption power of the battery;

[0011] A second determining unit, configured to determine a target cooling power of the liquid cooling unit according to the first heating power and the second heating power, and to determine a target heating power of the liquid cooling unit according to the heat absorbing power;

[0012] The selection unit is used to select the liquid cooling unit according to the target cooling power and the target heating power.

[0013] In a third aspect, an embodiment of the present application further provides an electronic device, comprising a memory storing a plurality of instructions; a processor loads the instructions from the memory to execute the liquid cooling unit selection method for the energy storage system provided in the first aspect.

[0014] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, which stores a plurality of instructions suitable for loading by a processor to execute the method for selecting a liquid cooling unit for an energy storage system provided in the first aspect.

[0015] In a fifth aspect, an embodiment of the present application further provides a computer program product, including a computer program or instructions, where the computer program or instructions are executed by a processor to implement the method for selecting a liquid cooling unit for an energy storage system provided in the first aspect.

[0016] In the method for selecting a liquid cooling unit for an energy storage system provided in the present application, the first heating power of the battery of the energy storage system in the first stage, the second heating power in the second stage, and the heat absorption power of the battery are determined, and then the target cooling power of the liquid cooling unit is determined according to the first heating power and the second heating power, and the target heating power of the liquid cooling unit is determined according to the heat absorption power, and finally the liquid cooling unit is selected according to the target cooling power and the target heating power. The present application designs the cooling capacity of the liquid cooling unit in combination with the heating power of the battery at different stages to meet the full life cycle operation requirements of the battery, thereby slowing down the life decay of the battery and making the battery have a longer service life, so as to avoid excessive design of the cooling capacity and heating capacity of the liquid cooling unit, thereby saving electricity costs while ensuring that the battery can operate stably at full power throughout its life cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of a first process flow of a method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application;

[0019] Figure 2 A second flow diagram of the method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application;

[0020] Figure 3 A third flow chart of the method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application;

[0021] Figure 4A fourth flow chart of the method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application;

[0022] Figure 5 A fifth flow chart of the method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application;

[0023] Figure 6 A sixth flow chart of the method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application;

[0024] Figure 7 A seventh flow chart of the method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application;

[0025] Figure 8 An eighth flow chart of the method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application;

[0026] Fig. 9 A schematic block diagram of a liquid cooling unit selection device for an energy storage system provided in an embodiment of the present application;

[0027] Fig.10 A schematic block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0030] It should also be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in this application specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0031] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] In addition, in this application, unless otherwise clearly specified or limited in the embodiments, the terms "installed", "connected", "connected" and "fixed" etc. appearing in the embodiments should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integrated connection. It can be understood that it can also be a mechanical connection, an electrical connection, etc.; of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements, or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific implementation situation.

[0033] In the related art, when designing the cooling capacity and heating capacity of the liquid cooling unit, the following problems usually exist:

[0034] 1. There is no clear calculation method for the cooling and heating capacity of the battery, which results in the design of the cooling and heating capacity of the liquid cooling unit being based only on empirical values;

[0035] 2. The entire life cycle of the battery is not taken into consideration, and the cooling capacity of the liquid cooling unit is designed based only on the initial heat generation of the battery, resulting in the battery system being unable to work normally in the middle or late stage of its life due to insufficient cooling and heating supply;

[0036] 3. The cooling and heating design margin of the liquid cooling unit is too large, wasting electricity costs;

[0037] 4. When the ambient temperature is high, the cooling capacity of the liquid cooling unit is insufficient, resulting in excessive temperature rise of the battery and a significant reduction in lifespan. At the same time, when the temperature is low, the heating capacity of the liquid cooling unit is insufficient, and the battery cannot operate at full power and cannot meet the energy supply of the power grid.

[0038] To this end, the present application provides a method for selecting a liquid cooling unit for an energy storage system, an electronic device, and a readable storage medium, which can provide a theoretical basis for the selection and design of a liquid cooling unit. Specifically, the first heating power of the battery of the energy storage system in the first stage, the second heating power in the second stage, and the heat absorption power of the battery can be determined, and then the target cooling power of the liquid cooling unit is determined according to the first heating power and the second heating power, and the target heating power of the liquid cooling unit is determined according to the heat absorption power. Finally, the liquid cooling unit is selected according to the target cooling power and the target heating power. The present application designs the cooling capacity of the liquid cooling unit in combination with the heating power of the battery at different stages to meet the operation requirements of the battery throughout its life cycle, thereby slowing down the life decay of the battery and making the battery have a longer service life, so as to avoid excessive design of the cooling capacity and heating capacity of the liquid cooling unit, thereby saving electricity costs while ensuring that the battery can operate stably at full power throughout its life cycle.

[0039] See also Figure 1 , Figure 1 A flow chart of a method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application. The method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application is applied to a terminal device, and the method is executed by an application software installed in the terminal device. The terminal device may be a desktop computer, a laptop computer, a tablet computer, a mobile phone, an electric vehicle terminal, etc.

[0040] It should be noted that the application scenarios described in the following embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. A person of ordinary skill in the art can know that with the emergence of new application scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0041] The following is a detailed description of the method for selecting a liquid cooling unit for the energy storage system provided in this application.

[0042] like Figure 1 As shown, the method includes the following steps S110 to S130.

[0043] S110, determining a first heating power of a battery of the energy storage system in the first stage, a second heating power in the second stage, and a heat absorption power of the battery.

[0044] Specifically, the first stage and the second stage can be two stages of the battery's life cycle, such as the early stage of life and the end of life, but not limited to this. The present application can determine the cooling capacity required by the battery at different stages by determining the first heating power of the battery of the energy storage system in the first stage and the second heating power in the second stage, and then the cooling capacity range of the liquid cooling unit can be designed based on this, so as to select the liquid cooling unit. At the same time, the heat absorption power of the battery is the heat absorption power of the battery itself during the charging and discharging process, which can be determined based on the specific heat capacity of the battery.

[0045] In some embodiments, Figure 2 As shown, step S110 includes steps S111 and S112.

[0046] S111, determining the number of battery cells of the energy storage system, the third heating power of the battery cells of the energy storage system in the first stage, the fourth heating power of the battery cells in the second stage, and the specific heat capacity of the battery cells;

[0047] S112, determining the first heating power according to the number of battery cells and the third heating power, determining the second heating power according to the number of battery cells and the fourth heating power, and determining the heating power according to the number of battery cells and the specific heat capacity.

[0048] Specifically, in the process of determining the first heating power of the battery of the energy system in the first stage and the second heating power in the second stage, the present application can determine the number of battery cells of the energy storage system and the third heating power of the battery cells of the energy storage system in the first stage to determine the first heating power, and determine the second heating power according to the number of battery cells and the fourth heating power of the battery cells in the second stage, and at the same time determine the heating power according to the specific heat capacity of the battery cells and the number of battery cells.

[0049] For example, the cabinet size of the energy storage system is D*W*H (6058*2438*2896mm), where H is the height, D is the depth, and W is the width. It consists of 10 battery clusters, each of which consists of 8 battery packs, each of which consists of 52 battery cells. The specific heat capacity C of the battery cell material is 1.055kJ / kg·℃, the mass m of a single battery cell is 5.628kg, the charge and discharge rate of the energy storage system is 0.5C, the single charge / discharge time t is 2h, and the battery cell operating temperature rise ΔT during the charge / discharge process is 8℃. Based on the heat generation evaluation at the beginning of the battery cell life, a single The average heating power q of the battery cell is 14.67W, so the first heating power of the entire battery cell Qb1 = total number of battery cells*q = 10*8*52*14.67 = 61027.2W, the heat absorbed by the battery cell material itself Qa = C*10*8*52*m*ΔT*1000 / t = 27444.63W; based on the calorific value evaluation at the end of the battery cell life, the calorific value has increased compared to the beginning of its life, and the calorific value of a single battery cell is about 18.93W. Other conditions remain unchanged, and the second heating power of the entire battery cell Qb2 = total number of battery cells*q = 78748.8W.

[0050] S120, determining a target cooling power of the liquid cooling unit according to the first heating power and the second heating power, and determining a target heating power of the liquid cooling unit according to the heat absorption power.

[0051] In this embodiment, the target cooling power can be understood as the power range of the liquid cooling unit for liquid cooling the energy storage system. For example, if the first heating power is the heating power at the beginning of the battery life, and the second heating power is the heating power at the end of the battery life, then the power range of the liquid cooling unit for liquid cooling the energy storage system can be between the first heating power and the second heating power. At the same time, considering that the heating power of the battery is too high due to uncertain factors at the beginning of its life, a certain margin needs to be reserved at the beginning of the battery life, that is, the fifth heating power is determined according to the first heating power and the preset coefficient, and it is determined whether the fifth heating power is greater than the second heating power. If it is not greater than the second heating power, it is determined that the target cooling power is between the first heating power and the second heating power. If it is greater than the second heating power, it is determined that the target cooling power is between the first heating power and the fifth heating power. Among them, the preset coefficient can be 1.2, but is not limited to this.

[0052] In some embodiments, Figure 3 As shown, step S120 includes steps S121 and S122.

[0053] S121, determining a first cooling power of the liquid cooling unit according to the solar radiation power and the first heating power received by the energy storage system, and determining a second cooling power of the liquid cooling unit according to the solar radiation power and the second heating power;

[0054] S122: Determine a target cooling power of the liquid cooling unit according to the first cooling power and the second cooling power.

[0055] Specifically, while considering the heating power of the battery, the present application also takes into account the heat generated by the cabinet of the energy storage system after being exposed to the sun, so as to further accurately determine the cooling capacity range of the liquid cooling unit for cooling the energy storage system. Therefore, the present application can determine the first cooling power of the liquid cooling unit based on the solar radiation power and the first heating power received by the energy storage system, and determine the second cooling power of the liquid cooling unit based on the solar radiation power and the second heating power, and then determine the target cooling power of the liquid cooling unit based on the first cooling power and the second cooling power. Among them, the solar radiation power can be determined according to the actual environment where the energy storage system is located.

[0056] In some embodiments, Figure 4 As shown, the method for selecting a liquid cooling unit of an energy storage system further includes steps S210 and S220.

[0057] S210, determining the solar radiation intensity, the solar radiation area to the energy storage system, and the heat absorption rate of the energy storage system;

[0058] S220. Determine the solar radiation power according to the radiation intensity, radiation area and heat absorption rate.

[0059] Specifically, in the process of determining the solar radiation power, the present application can determine it according to the solar radiation intensity of the environment where the energy storage system is located, the solar radiation area of ​​the energy storage system, and the heat absorption rate of the energy storage system. Among them, the solar radiation intensity can be obtained according to the environmental survey of the customer's application site. For example, the solar radiation intensity E can be taken as 1120W / m 2 The solar radiation area of ​​the energy storage system can be determined based on the area of ​​the energy storage system cabinet exposed to the sun.

[0060] In addition, if the cabinet is designed with gray-white painted steel plates, the heat absorption rate of the cabinet is A = 0.3.

[0061] In some embodiments, Figure 5 As shown, the method for selecting a liquid cooling unit of an energy storage system further includes steps S310 and S320.

[0062] S310, determining a heat transfer coefficient of the energy storage system;

[0063] S320. Determine the solar radiation power according to the heat transfer coefficient, radiation intensity, radiation area and heat absorption rate.

[0064] Specifically, in the process of determining the solar radiation power, the present application also takes into account the heat transfer coefficient of the energy storage system to accurately determine the solar radiation power. The calculation formula of the solar radiation power Qr can be Qr = 0.047*k*S2*E*A = 904.97W, where k is the heat transfer coefficient, S2 is the solar radiation area, E is the solar radiation intensity, and A is the heat absorption rate.

[0065] The heat transfer coefficient of the energy storage system can be determined based on the wall design of the energy storage system cabinet. If the cabinet adopts a double-layer wall design, its heat transfer coefficient k can be 2.5kW / m 2 ℃.

[0066] In some embodiments, Figure 6 As shown, the method for selecting a liquid cooling unit of an energy storage system further includes steps S410 and S420.

[0067] S410, determining the way in which the sun irradiates the energy storage system;

[0068] S420. Determine the radiation area according to the irradiation method.

[0069] In this embodiment, the irradiation mode of the energy storage system can be determined by the solar irradiation of the energy storage system. For example, the hexahedral cabinet is generally exposed to two solar surfaces at the same time (in the case of frontal irradiation, the oblique angle irradiation can be three surfaces, which can be converted into two surfaces for frontal irradiation. At this time, the solar radiation area S2 = H × D + H × W = 22.92m 2 , H is the height of the cabinet, D is the depth of the cabinet, and W is the width of the cabinet.

[0070] In some embodiments, Figure 7 As shown, step S120 includes steps S1201 and S1202.

[0071] S1201, determining a third cooling power of the liquid cooling unit according to the heat absorption power and the first heating power, and determining a fourth cooling power of the liquid cooling unit according to the heat absorption power and the second heating power;

[0072] S1202: Determine a target cooling power of the liquid cooling unit according to the third cooling power and the fourth cooling power.

[0073] Specifically, when determining the target cooling power of the liquid cooling unit, the present application can specifically determine the third cooling power and the fourth cooling power based on the cooling power of the liquid cooling unit for the first stage battery and the second stage battery. The third cooling power can be determined based on the heat absorption power and the first heat generation power, and the fourth cooling power can be determined based on the heat absorption power and the second heat generation power.

[0074] In some embodiments, Figure 8 As shown, step S120 includes steps S120a and S120b.

[0075] S120a, determining a fifth cooling power of the liquid cooling unit according to the seepage heat power and the first heating power of the energy storage system, and determining a sixth cooling power of the liquid cooling unit according to the seepage heat power and the second heating power;

[0076] S120b. Determine a target cooling power of the liquid cooling unit according to the fifth cooling power and the sixth cooling power.

[0077] Specifically, when determining the target cooling power of the liquid cooling unit, the present application also needs to consider the heat seepage power of the energy storage system, and then the fifth cooling power of the liquid cooling unit can be determined according to the heat seepage power and the first heating power of the energy storage system, and the sixth cooling power of the liquid cooling unit can be determined according to the heat seepage power and the second heating power, and finally the target cooling power of the liquid cooling unit can be determined according to the fifth cooling power and the sixth cooling power. Among them, the heat seepage power mentioned in this embodiment can be understood as the cabinet of the energy storage system having a high external temperature and a low internal temperature, which causes external heat to penetrate into the cabinet.

[0078] In some embodiments, step S120 includes the step of determining a target heating power of the liquid cooling unit according to the heat absorption power and the heat absorption power of the energy storage system.

[0079] In this embodiment, when determining the target heating power of the liquid cooling unit, the present application also needs to take into account the difference in temperature between the inside and outside of the cabinet of the energy storage system. At this time, the cabinet of the energy storage system has a relatively low external temperature and a relatively high internal temperature, which causes internal heat to penetrate outside the cabinet. Therefore, the present application can determine the target heating power of the liquid cooling unit based on the heat absorption power of the energy storage system and the heat penetration power of the energy storage system.

[0080] In some embodiments, the method for selecting a liquid cooling unit for an energy storage system further includes the step of determining the heat transfer power of the energy storage system based on the surface area for heat exchange between the energy storage system and the outside world, the heat transfer coefficient of the energy storage system, and the temperature difference between the inside of the energy storage system and the outside world.

[0081] Specifically, in the process of determining the heat seepage power of the energy storage system, the present application can determine the heat seepage power of the energy storage system according to the surface area of ​​the energy storage system for heat exchange with the outside world, the heat exchange coefficient of the energy storage system, and the temperature difference between the inside and the outside of the energy storage system. Among them, the surface area of ​​the energy storage system for heat exchange with the outside world can be determined according to the surface area of ​​the cabinet, and the calculation formula of the heat exchange surface area S1 can be S1=H*W*2+D*W+D*H*2, and the calculation formula of the heat seepage power Qs can be: Qs=k*S1*ΔT 1, wherein k is the heat exchange coefficient, S1 is the surface area, ΔT 1 is the temperature difference between the inside and the outside, H is the height, D is the depth, and W is the width.

[0082] For example, in an extremely high temperature environment, the external ambient temperature of the cabinet is 55°C and the internal ambient temperature is 25°C, then the temperature difference between the inside and outside of the cabinet is 30°C, and the heat seeping into the cabinet can be 4546.04W; in an extremely low temperature environment, the external ambient temperature of the cabinet is -30°C and the internal ambient temperature of the cabinet is 5°C, then the temperature difference between the inside and outside of the cabinet is 35°C, and the heat seeping out of the cabinet can be 5303.7W.

[0083] S130. Select a liquid cooling unit according to the target cooling power and the target heating power.

[0084] Specifically, when determining the target cooling power, the present application can determine it based on the first heating power of the battery, the second heating power, the heat seepage power of the energy storage system, the heat absorption power of the battery, and the solar radiation power received by the energy storage system. The formula for the target cooling power Qt can be: Qt=Qb+Qs+Qr-Qa, where Qb is the heating power of the entire battery cell, Qs is the heat seepage power, Qr is the solar radiation power received by the energy storage system, and Qa is the heat absorption power of the battery. When the first and second stages of the battery cell are taken into account, the cooling power Qt1 of the first stage and the cooling power Qt2 of the second stage can be obtained, and at this time Qt is between Qt1 and Qt2.

[0085] At the same time, when determining the target heating power, the present application can determine the target heating power of the liquid cooling unit according to the heat absorption power and heat absorption power of the energy storage system. The formula of the target heating power Q3 can be Q3 = Qa-Qs, where Qa is the heat absorption power of the battery and Qs is the heat absorption power.

[0086] In the method for selecting a liquid cooling unit for an energy storage system provided in an embodiment of the present application, the first heating power of the battery of the energy storage system in the first stage, the second heating power in the second stage, and the heat absorption power of the battery are determined; the target cooling power of the liquid cooling unit is determined according to the first heating power and the second heating power, and the target heating power of the liquid cooling unit is determined according to the heat absorption power; the liquid cooling unit is selected according to the target cooling power and the target heating power. The present application designs the cooling capacity of the liquid cooling unit in combination with the heating power of the battery at different stages to achieve the selection of the liquid cooling unit, so as to meet the full life cycle operation requirements of the battery, thereby slowing down the life decay of the battery and making the battery have a longer service life, so as to avoid excessive design of the cooling capacity and heating capacity of the liquid cooling unit, thereby saving electricity costs while ensuring that the battery can operate stably at full power throughout its life cycle.

[0087] The embodiment of the present application further provides a liquid cooling unit selection device 500 for an energy storage system, which is used to execute any embodiment of the liquid cooling unit selection method for the energy storage system described above.

[0088] Specifically, see Fig. 9 , Fig. 9 It is a schematic block diagram of a liquid cooling unit selection device 500 for an energy storage system provided in an embodiment of the present application.

[0089] like Fig. 9 As shown, the liquid cooling unit selection device 500 of the energy storage system includes: a first determination unit 510 , a second determination unit 520 and a selection unit 530 .

[0090] A first determining unit 510, used to determine a first heating power of a battery of the energy storage system in the first stage, a second heating power in the second stage, and a heat absorption power of the battery;

[0091] A second determining unit 520, configured to determine a target cooling power of the liquid cooling unit according to the first heating power and the second heating power, and to determine a target heating power of the liquid cooling unit according to the heat absorption power;

[0092] The selection unit 530 is used to select a liquid cooling unit according to the target cooling power and the target heating power.

[0093] The liquid cooling unit selection device 500 of the energy storage system provided in the embodiment of the present application is used to execute the above-mentioned determination of the first heating power of the battery of the energy storage system in the first stage, the second heating power in the second stage, and the heat absorption power of the battery; determine the target cooling power of the liquid cooling unit according to the first heating power and the second heating power, and determine the target heating power of the liquid cooling unit according to the heat absorption power; select the liquid cooling unit according to the target cooling power and the target heating power.

[0094] It should be noted that technicians in the relevant field can clearly understand that the specific implementation process of the liquid cooling unit selection device 500 and each unit of the above-mentioned energy storage system can refer to the corresponding description in the aforementioned method embodiment, and for the convenience and brevity of description, it will not be repeated here.

[0095] The liquid cooling unit selection device 500 of the energy storage system can be implemented in the form of a computer program. The computer program can be used in Fig.10 The electronic device shown is running.

[0096] See also Fig.10 , Fig.10 This is a schematic block diagram of an electronic device provided in an embodiment of the present application. The electronic device 600 may be a terminal, wherein the terminal may be a cloud, a vehicle-mounted terminal device, a smart phone, a tablet computer, a laptop computer, a desktop computer, a personal digital assistant, a wearable device, etc.

[0097] See also Fig.10 The electronic device 600 includes a processor 602 , a memory and a network interface 605 connected via a system bus 601 , wherein the memory may include a non-volatile storage medium 603 and an internal memory 604 .

[0098] The non-volatile storage medium 603 can store an operating system 6031 and a computer program 6032. The computer program 6032 includes program instructions, and when the program instructions are executed, the processor 602 can execute a method for selecting a liquid cooling unit of an energy storage system.

[0099] The processor 602 is used to provide computing and control capabilities to support the operation of the entire electronic device 600 .

[0100] The internal memory 604 provides an environment for the operation of the computer program 6032 in the non-volatile storage medium 603. When the computer program 6032 is executed by the processor 602, the processor 602 can execute a method for selecting a liquid cooling unit of an energy storage system.

[0101] The network interface 605 is used to communicate with other devices over the network. Fig.10 The structure shown in the figure is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the electronic device 600 to which the scheme of the present application is applied. The specific electronic device 600 may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0102] The processor 602 is used to run a computer program 6032 stored in the memory to implement the following steps: determining the first heating power of the battery of the energy storage system in the first stage, the second heating power in the second stage, and the heat absorption power of the battery; determining the target cooling power of the liquid cooling unit according to the first heating power and the second heating power, and determining the target heating power of the liquid cooling unit according to the heat absorption power; and selecting the liquid cooling unit according to the target cooling power and the target heating power.

[0103] It should be understood that in the embodiment of the present application, the processor 602 may be a central processing unit (CPU), and the processor 602 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0104] According to one aspect of the present application, a computer program product or computer program is also provided, the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device implements the following steps: determining the first heating power of the battery of the energy storage system in the first stage, the second heating power in the second stage, and the heat absorption power of the battery; determining the target cooling power of the liquid cooling unit according to the first heating power and the second heating power, and determining the target heating power of the liquid cooling unit according to the heat absorption power; selecting the liquid cooling unit according to the target cooling power and the target heating power.

[0105] It can be understood by those skilled in the art that all or part of the processes in the method for implementing the above embodiment can be completed by instructing the relevant hardware through a computer program. The computer program includes program instructions, and the computer program can be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in the computer system to implement the process steps of the embodiment of the above method.

[0106] Therefore, the present application also provides a storage medium. The storage medium may be a computer-readable storage medium. The storage medium stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by the processor, the processor performs the following steps: determining the first heating power of the battery of the energy storage system in the first stage, the second heating power in the second stage, and the heat absorption power of the battery; determining the target cooling power of the liquid cooling unit according to the first heating power and the second heating power, and determining the target heating power of the liquid cooling unit according to the heat absorption power; selecting the liquid cooling unit according to the target cooling power and the target heating power.

[0107] The storage medium may be any computer-readable storage medium that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk.

[0108] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0109] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of each unit is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0110] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs. The units in the device of the embodiment of the present application can be combined, divided and deleted according to actual needs. In addition, the functional units in the various embodiments of the present application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0111] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for an electronic device (which can be a personal computer, terminal, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.

[0112] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for selecting a liquid cooling unit for an energy storage system, characterized in that: include: Determine a first heating power of a battery of the energy storage system in a first stage, a second heating power in a second stage, and a heat absorption power of the battery; Determine a target cooling power of the liquid cooling unit according to the first heating power and the second heating power, and determine a target heating power of the liquid cooling unit according to the heat absorption power; The liquid cooling unit is selected according to the target cooling power and the target heating power.

2. The method for selecting a liquid cooling unit for an energy storage system according to claim 1, characterized in that: The step of determining a target cooling power of the liquid cooling unit according to the first heating power and the second heating power includes: Determine a first cooling power of the liquid cooling unit according to the solar radiation power received by the energy storage system and the first heating power, and determine a second cooling power of the liquid cooling unit according to the solar radiation power and the second heating power; A target cooling power of the liquid cooling unit is determined according to the first cooling power and the second cooling power.

3. The method for selecting a liquid cooling unit for an energy storage system according to claim 2, characterized in that: The method further comprises: Determining the solar radiation intensity, the solar radiation area to the energy storage system, and the heat absorption rate of the energy storage system; The solar radiation power is determined according to the radiation intensity, the radiation area and the heat absorption rate.

4. The method for selecting a liquid cooling unit for an energy storage system according to claim 3, characterized in that: The method further comprises: Determining a heat transfer coefficient of the energy storage system; The solar radiation power is determined according to the heat transfer coefficient, the radiation intensity, the radiation area and the heat absorption rate.

5. The method for selecting a liquid cooling unit for an energy storage system according to claim 3, characterized in that: The method further comprises: determining how the sun shines on the energy storage system; The irradiation area is determined according to the irradiation mode.

6. The method for selecting a liquid cooling unit for an energy storage system according to any one of claims 1 to 5, characterized in that: The step of determining a target cooling power of the liquid cooling unit according to the first heating power and the second heating power includes: Determine a third cooling power of the liquid cooling unit according to the heat absorption power and the first heat generation power, and determine a fourth cooling power of the liquid cooling unit according to the heat absorption power and the second heat generation power; The target cooling power of the liquid cooling unit is determined according to the third cooling power and the fourth cooling power.

7. The method for selecting a liquid cooling unit for an energy storage system according to any one of claims 1 to 5, characterized in that: The step of determining a target cooling power of the liquid cooling unit according to the first heating power and the second heating power includes: Determine a fifth cooling power of the liquid cooling unit according to the heat seepage power of the energy storage system and the first heating power, and determine a sixth cooling power of the liquid cooling unit according to the heat seepage power and the second heating power; The target cooling power of the liquid cooling unit is determined according to the fifth cooling power and the sixth cooling power.

8. The method for selecting a liquid cooling unit for an energy storage system according to any one of claims 1 to 5, characterized in that: The step of determining the target heating power of the liquid cooling unit according to the heat absorption power comprises: The target heating power of the liquid cooling unit is determined according to the heat absorption power and the heat absorption power of the energy storage system.

9. The method for selecting a liquid cooling unit for an energy storage system according to claim 7 or 8, characterized in that: The method comprises: The heat seepage power of the energy storage system is determined according to the surface area of ​​the energy storage system for heat exchange with the outside, the heat exchange coefficient of the energy storage system, and the temperature difference between the inside of the energy storage system and the outside.

10. The method for selecting a liquid cooling unit for an energy storage system according to any one of claims 1 to 5, characterized in that: The determining of a first heating power of a battery of the energy storage system in a first stage, a second heating power in a second stage, and a heat absorption power of the battery respectively comprises: Determine the number of battery cells of the energy storage system, the third heating power of the battery cells of the energy storage system in the first stage, the fourth heating power of the battery cells in the second stage, and the specific heat capacity of the battery cells; The first heating power is determined according to the number of battery cells and the third heating power, the second heating power is determined according to the number of battery cells and the fourth heating power, and the heating power is determined according to the number of battery cells and the specific heat capacity.

11. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method for selecting a liquid cooling unit for an energy storage system according to any one of claims 1 to 10 are implemented.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for selecting a liquid cooling unit for an energy storage system according to any one of claims 1 to 10 are implemented.

Images