Two-stage wind control method, system, electronic equipment and storage medium

Abstract

The present invention discloses a two-stage wind control method, system, electronic device and storage medium. The wind control method includes: obtaining the operation mode of the first-stage forced cooling system; controlling the operation state of the fan of the second-stage forced cooling system according to the operation mode and the temperature difference of the battery stack. In the present invention, different operation states of the fan can be controlled according to different operation modes of the first-stage forced cooling system and different temperature differences of the battery stack. For example, when the temperature difference is small and the operation mode is ventilation mode, all fans can be controlled to turn on. For example, when the temperature difference is large and the operation mode is cold air or hot air mode, the fan corresponding to the place with large temperature difference can be controlled to turn off, etc. In this way, the first-stage forced cooling system and the second-stage forced cooling system can be automatically and effectively linked to prevent the disconnected control of the second-stage forced cooling system, which not only improves the control efficiency, but also ensures the thermal performance of the energy storage power station system, and improves the system consistency and life.

Description

Technical Field

[0001] The present invention relates to the field of new energy storage, and in particular to a two-stage wind control method, system, electronic equipment and storage medium. Background Art

[0002] The thermal management system of energy storage power stations is divided into natural cooling system, forced air cooling system and liquid cooling system according to the type of heat dissipation. At present, in the energy storage market, the natural cooling system is only applicable to products with extremely low charge and discharge rates, and the liquid cooling system is still in the development stage due to safety and cost reasons, so the forced air cooling system is still the mainstream.

[0003] At present, it is common for energy storage power stations in the industry to use a two-stage forced air cooling system, but the thermal management control system usually controls the power station air cooling system (air conditioning system, hereinafter referred to as the first-level forced cooling system) and the battery plug-in box forced air cooling system (hereinafter referred to as the second-level forced cooling system) independently, or even only controls the first-level forced cooling system and ignores the second-level forced cooling system. Especially under harsh charging and discharging conditions, this independent control method will lead to poor control of high temperature and temperature difference in the system, affecting system consistency and life. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art that the forced cooling system and the secondary forced cooling system are independent of each other and have disconnected control, and to provide a two-stage wind control method, system, electronic device and storage medium that can automatically and linkage control the primary forced cooling system and the secondary forced cooling system.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] The present invention provides a two-stage wind control method, the wind control method comprising:

[0007] Get the operation mode of the primary forced cooling system;

[0008] The operating state of the fan of the secondary forced cooling system is controlled according to the operating mode and the temperature difference of the battery stack.

[0009] Preferably, the step of controlling the operating state of the fan of the secondary forced cooling system according to the operating mode and the temperature difference of the battery stack comprises:

[0010] Obtain the temperature difference of the battery stack;

[0011] Obtaining a preset high temperature difference interval corresponding to the operation mode;

[0012] If the temperature difference is within the preset high temperature difference interval, the corresponding first target fan is turned off according to the temperature difference contribution of each fan in the running fans.

[0013] Preferably, after the step of shutting down the corresponding first target fan, the step further includes:

[0014] Return to the steps of obtaining the temperature difference of the battery stack, obtaining the preset high temperature difference interval corresponding to the operating mode, and if the temperature difference is within the preset high temperature difference interval, shutting down the corresponding first target fan according to the temperature difference contribution of each fan in the running fans, until the temperature difference of the battery stack is within the preset low temperature difference interval.

[0015] Preferably, after the step of obtaining the temperature difference of the battery stack, the step further includes:

[0016] If the temperature difference of the battery stack is within a preset low temperature difference range, the second target fan is turned on, where the second target fan represents all fans of the secondary forced cooling system.

[0017] Preferably, the step of shutting down the corresponding first target fan according to the temperature difference contribution of each fan in operation includes:

[0018] Acquire a first number of fans to be shut down according to the operation mode;

[0019] For the running fans, they are sorted from high to low according to their contribution to the temperature difference;

[0020] The wind turbines located in the front by the first number are taken as the first target wind turbines;

[0021] The first target fan is turned off.

[0022] Preferably, the preset high temperature difference interval includes a plurality of sub-high temperature intervals;

[0023] If the temperature difference is within the preset high temperature difference range, the step of shutting down the corresponding first target fan according to the temperature difference contribution of each fan in operation includes:

[0024] If the temperature difference is within one of the plurality of sub-high temperature intervals, obtaining a second quantity corresponding to the sub-high temperature interval;

[0025] For the running fans, they are sorted from high to low according to their contribution to the temperature difference;

[0026] The wind turbines located at the front of the second number are used as the first target wind turbines;

[0027] Turning off the first target fan;

[0028] Preferably, if the operation mode is a cooling mode, the first target fan is a fan corresponding to a low temperature area; if the operation mode is a heating mode, the first target fan is a fan corresponding to a high temperature area.

[0029] Preferably, before the step of setting the temperature difference of the battery stack to be within a preset low temperature difference range, the step includes:

[0030] The corresponding preset low temperature difference interval is obtained according to the operation mode.

[0031] The present invention also provides a two-stage wind control system, the wind control system comprising: a mode acquisition module and a fan control module;

[0032] The mode acquisition module is used to acquire the operation mode of the primary forced cooling system;

[0033] The fan control module is used to control the operating state of the fan of the secondary forced cooling system according to the operating mode and the temperature difference of the battery stack.

[0034] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned two-stage wind control method when executing the computer program.

[0035] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the above-mentioned two-stage wind control method.

[0036] The positive progressive effect of the present invention is that according to the different operating modes of the first-level forced cooling system and the different temperature differences of the battery stack, the fan can be controlled to have different operating states. For example, when the temperature difference is small and the operating mode is the ventilation mode, all the fans can be controlled to turn on. For another example, when the temperature difference is large and the operating mode is the cold air or hot air mode, the fans corresponding to the places with large temperature differences can be controlled to turn off, etc. In this way, the first-level forced cooling system and the second-level forced cooling system can be automatically and effectively linked to prevent the second-level forced cooling system from being disconnected from control, which not only improves the control efficiency, but also ensures the thermal performance of the energy storage power station system and improves the system consistency and life. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a flow chart of the two-stage wind control method in Example 1 of the present invention.

[0038] Figure 2 This is a flow chart of the implementation of step 102 in Example 1 of the present invention.

[0039] Figure 3 This is a flowchart of the first implementation of step 1023 in Example 1 of the present invention.

[0040] Figure 4 This is a flow chart of a second implementation of step 1023 in Example 1 of the present invention.

[0041] Figure 5 This is a flow chart of the control method of the second target fan in Example 1 of the present invention.

[0042] Figure 6 This is a flow chart of a two-stage wind control method in a specific scenario in Example 1 of the present invention.

[0043] Figure 7 This is a module schematic diagram of a two-stage wind control system in Example 2 of the present invention.

[0044] Figure 8 This is a schematic diagram of the modules of the electronic device in Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0045] For ease of understanding, the terms that often appear in the embodiments are explained below:

[0046] [Definition of including] The terms "having", "may have", "including" or "may include" as used herein indicate the existence of the corresponding functions, operations, elements, etc. of the present disclosure, and do not limit the existence of one or more other functions, operations, elements, etc. In addition, it should be understood that the terms "including" or "having" as used herein indicate the existence of the features, numbers, steps, operations, elements, parts or combinations thereof described in the specification, without excluding the existence or addition of one or more other features, numbers, steps, operations, elements, parts or combinations thereof.

[0047] [Definition of and / or] As used herein, the terms "A or B", "at least one of A and / or B", or "one or more of A and / or B" include any and all combinations of the words listed therewith. For example, "A or B", "at least one of A and B", or "at least one of A or B" means (1) including at least one A, (2) including at least one B, or (3) including both at least one A and at least one B.

[0048] [Definition of first and second] The first, second, etc. descriptions in the embodiments of the present application are only used for illustration and distinction of the described objects, and have no order, nor do they represent a special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application. For example, a first element can be referred to as a second element without departing from the scope of the present disclosure, and similarly, a second element can be referred to as a first element.

[0049] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0050] Example 1

[0051] The forced air cooling system of the energy storage power station generally includes an air conditioning system (i.e., a primary forced cooling system), an air duct system, and a battery plug-in box thermal management system. The battery plug-in box thermal management system is further divided into a natural cooling subsystem and a forced cooling subsystem (i.e., a secondary forced cooling system). The forced cooling subsystem includes several fans.

[0052] The two-stage forced air cooling system is a common mode currently used in internal energy storage power stations, that is, the wind generated by the first-stage forced cooling system is transported to the cavity for placing the battery stack through the air duct system, and then the wind is transported to each battery block through the fan in the second-stage forced cooling system. Since the first-stage forced cooling system and the second-stage forced cooling system are independent of each other, this independent control method will result in the temperature difference in the battery stack not being well controlled, affecting the consistency and life of the system.

[0053] Based on this, this embodiment provides a two-stage wind control method, such as Figure 1 As shown, the two-stage wind control method includes:

[0054] Step 101: Obtain the operation mode of the primary forced cooling system.

[0055] In this embodiment, the operating modes include standby mode, ventilation mode, cooling mode, heating mode, etc. The specific operating modes included can be selected according to actual conditions.

[0056] Step 102: Control the operating state of the fan of the secondary forced cooling system according to the operating mode and the temperature difference of the battery stack.

[0057] Among them, a number of temperature collection points are set in the battery stack, and one or more fans are correspondingly set near each temperature collection point.

[0058] In this embodiment, at the same time (same moment or same period of time), the difference between the highest temperature and the lowest temperature collected is the temperature difference of the battery stack. In other embodiments, the temperature difference of the battery stack can also be determined by other methods.

[0059] In this embodiment, the fan can be controlled to have different operating states according to different operating modes of the first-level forced cooling system and different temperature differences of the battery stack. For example, when the temperature difference is small and the operating mode is ventilation mode, all fans can be controlled to turn on. Another example is that when the temperature difference is large and the operating mode is cold air or hot air mode, the fan corresponding to the place with large temperature difference can be controlled to turn off, and so on. In this way, the first-level forced cooling system and the second-level forced cooling system can be automatically and effectively linked to prevent disconnection of the second-level forced cooling system, which not only improves the control efficiency, but also ensures the thermal performance of the energy storage power station system and improves the system consistency and life.

[0060] In a specific embodiment, Figure 2 As shown, step 102 specifically includes:

[0061] Step 1021: Obtain the temperature difference of the battery stack.

[0062] In this embodiment, the temperature difference of the battery stack mainly refers to the difference between the highest temperature and the lowest temperature of the battery cells in the battery stack collected by the BMS (battery management system). Logically, the reason for the large temperature difference of the battery cells in the battery stack is that the high temperature end is too high or the low temperature end is too low, or both.

[0063] In this embodiment, step 1021 and subsequent steps are preferably re-executed at preset intervals. On the one hand, the temperature of the battery stack can be controlled in real time. On the other hand, frequent changes in the operating state of the fan can be avoided, which is beneficial to the stability of the battery system.

[0064] Step 1022, obtaining a preset high temperature difference interval corresponding to the operation mode: if the temperature difference is within the preset high temperature difference interval, executing step 1023;

[0065] Step 1023: shut down the corresponding first target fan according to the temperature difference contribution of each fan in operation.

[0066] Specifically, assuming that there are 100 temperature collection points in the battery stack, the value difference of 99 collection points is only 5°C, but if the value of the remaining one collection point is counted (with a large positive or negative deviation from the values ​​of the other 99 collection points), the temperature difference of the battery cells in the stack can reach 12°C, and it can be determined that the temperature difference contribution of this collection point is the highest. It should be understood that this method and the specific values ​​therein are only used as distance descriptions and should not be a limitation to this embodiment.

[0067] In this embodiment, the corresponding preset high temperature difference interval is obtained according to the operating mode. If the temperature difference of the battery stack is within the preset high temperature difference interval, it means that the temperatures of various parts of the battery stack are uneven, which may easily affect the stability and life of the battery system. Therefore, the corresponding first target fan is turned off by the temperature difference contribution. The fan corresponding to the part with a larger temperature difference can be turned off, thereby reducing the temperature difference inside the battery stack as a whole and improving the stability and life of the overall battery system.

[0068] In step 1023, there are multiple ways to obtain the corresponding first target wind turbine. Several specific ways are listed below as examples, but it should be understood that the following ways should not be a limitation to this embodiment:

[0069] Method 1:

[0070] like Figure 3 As shown, step 1023 includes the following steps:

[0071] Step 11231: Obtain a first number of fans to be shut down according to the operation mode.

[0072] Therein, a first number of fans to be shut down is pre-set for different operating modes.

[0073] Step 11232: Sort the running fans from high to low according to their contribution to the temperature difference.

[0074] For example, in cooling mode, the fan corresponding to the lowest collected temperature can be used as the fan with the highest temperature difference contribution, and the fan corresponding to the second lowest collected temperature can be used as the fan with the second highest temperature difference contribution, and so on; in heating mode, the fan corresponding to the highest collected temperature can be used as the fan with the highest temperature difference contribution, and the fan corresponding to the second highest collected temperature can be used as the fan with the second highest temperature difference contribution, and so on; in ventilation mode, the highest temperature and the lowest temperature collected can be used as the fan with the highest temperature difference contribution, and the fans corresponding to the second lowest temperature and the second highest temperature collected can be used as the fan with the second highest temperature difference contribution, and so on.

[0075] Step 11233: select the first number of fans located in front as the first target fans.

[0076] That is, the wind turbine with the highest contribution ranking is taken as the first target wind turbine.

[0077] Step 11234, turn off the first target fan.

[0078] In this embodiment, the first number of fans to be shut down can be obtained according to different operating modes, and the first number of fans can be shut down from front to back according to the order of temperature difference contribution. Different numbers of fans can be shut down for different operating modes, and targeted control can be performed.

[0079] Method 2:

[0080] In this manner, the preset high temperature difference interval includes a plurality of sub-high temperature intervals, that is, the preset high temperature difference interval includes sub-high temperature intervals of different levels, for example, the first temperature to the second temperature is a sub-high temperature interval of the first level, the second temperature to the third temperature is a sub-high temperature interval of the second level, and so on. The specific number and range of sub-high temperature intervals can be determined according to actual conditions.

[0081] like Figure 4 As shown, step 1023 includes the following steps:

[0082] Step 12231: If the temperature difference is within one of several sub-high temperature intervals, obtain a second quantity corresponding to the sub-high temperature interval.

[0083] For example, if the temperature difference is in the second level sub-high temperature interval, the second number corresponding to the second level sub-high temperature interval is obtained. In this embodiment, the higher the level (the greater the temperature difference requirement), the more fans need to be shut down.

[0084] Step 12232: sort the running fans from high to low according to their contribution to the temperature difference;

[0085] Step 12233, taking the wind turbine located at the front second number as the first target wind turbine;

[0086] Step 12234, turn off the first target fan.

[0087] In this embodiment, several sub-high temperature intervals of different levels are subdivided. The higher the level, the more fans need to be shut down. In this way, the fans can be controlled more finely, thereby more accurately controlling the operating status of the fans.

[0088] Method 3:

[0089] In step 1023, if the operation mode of the first-level forced cooling system is the cooling mode, the first target fan is the fan corresponding to the low temperature area; if the operation mode of the first-level forced cooling system is the heating mode, the first target fan is the fan corresponding to the high temperature area.

[0090] In this embodiment, if the operating mode is the cooling mode, the low temperature has a greater impact on the temperature of the entire battery system. Therefore, the first target fan is selected from the fans corresponding to the low temperature area, such as the fan corresponding to the lowest temperature collected can be used as the first target fan; if the operating mode is the heating mode, the high temperature has a greater impact on the temperature of the entire battery system. Therefore, the first target fan is selected from the fans corresponding to the high temperature area, such as the fan corresponding to the highest temperature collected can be used as the first target fan. In this way, the first target fan in the corresponding low temperature area or high temperature area can be selected according to the different operating modes of the first-level forced cooling system, so as to more effectively reduce the temperature differences between various parts of the battery stack and improve the consistency of the battery system.

[0091] In a specific embodiment, Figure 5 As shown, after step 1023, if the temperature difference of the battery stack is not within the preset low temperature difference range, the process returns to step 1021 until the temperature difference of the battery stack is within the preset low temperature difference range.

[0092] Specifically, when the temperature difference of the battery stack is within the preset low temperature difference range, step 1024 is executed. If the temperature difference of the battery stack is within the preset low temperature difference range, the second target fan is turned on.

[0093] The second target fan represents all fans of the two-stage forced cooling system.

[0094] It should be understood that step 1024 can be located at any position after step 1021 .

[0095] In this embodiment, if the temperature difference of the battery stack is within the preset low temperature difference range, it means that the temperature difference inside the battery stack is not large, so the heating, cooling or ventilation efficiency of the battery stack can be improved by turning on all fans.

[0096] In this embodiment, before the step of the temperature difference of the battery stack being within the preset low temperature difference range, the following step may be further performed:

[0097] Obtain the corresponding preset low temperature difference range according to the operating mode.

[0098] In this embodiment, different preset low temperature difference intervals can be obtained according to different operating modes, so as to control the opening of all fans in different operating modes in a targeted manner.

[0099] In order to better understand the overall process of this embodiment, the present embodiment is described below through a specific example:

[0100] Figure 6 A control flow chart for a specific scenario is schematically shown. In this scenario, if the primary forced cooling system is in standby mode, that is, the air conditioning system is in off mode, the fan components in the secondary forced cooling system are all in off state by default.

[0101] If the primary forced cooling system is in ventilation mode, that is, the air-conditioning system is in the condition where only the fan in the air-conditioning system is turned on, and the actual temperature difference in the battery stack collected by the BMS system is in a subdivided low temperature difference zone (in the present embodiment, the subdivided low temperature difference zone is a specific implementation method of the preset low temperature interval), then the fan components in the secondary forced cooling system are all turned on by default; if the actual temperature difference in the battery stack collected by the BMS system is in a subdivided high temperature difference zone (in the present embodiment, the subdivided high temperature difference zone is a specific implementation method of the preset high temperature difference interval), then the n1 fan components with the largest temperature difference contribution in the secondary forced cooling system are turned off.

[0102] If the first-level forced cooling system is in cooling mode, and the actual temperature difference in the battery stack collected by the BMS system is in the subdivided low temperature difference zone, the fan components in the second-level forced cooling system are all turned on by default; if the actual temperature difference in the battery stack collected by the BMS system is in the subdivided high temperature difference zone, the n2 fan components with the largest temperature difference contribution in the second-level forced cooling system are turned off.

[0103] If the first-level forced cooling system is in heating mode, and the actual temperature difference in the battery stack collected by the BMS system is in the subdivided low temperature difference zone, the fan components in the second-level forced cooling system are all turned on by default; if the actual temperature difference in the battery stack collected by the BMS system is in the subdivided high temperature difference zone, the n3 fan components with the largest temperature difference contribution in the second-level forced cooling system are turned off.

[0104] If the first-level forced cooling system is in mode N, and the actual temperature difference in the battery stack collected by the BMS system is in the subdivided low temperature difference zone, the fan components in the second-level forced cooling system are all turned on by default; if the actual temperature difference in the battery stack collected by the BMS system is in the subdivided high temperature difference zone, the n fan components with the largest temperature difference contribution in the second-level forced cooling system are turned off.

[0105] Example 2

[0106] This embodiment provides a two-stage wind control system. Figure 7 As shown, the wind control system includes: a mode acquisition module 201 and a wind turbine control module 202 .

[0107] The mode acquisition module 201 is used to acquire the operation mode of the primary forced cooling system;

[0108] The fan control module 202 is used to control the operating state of the fan of the secondary forced cooling system according to the operating mode and the temperature difference of the battery stack.

[0109] In this embodiment, the fan control module can control the different operating states of the fan according to the different operating modes of the first-level forced cooling system and the different temperature differences of the battery stack. For example, when the temperature difference is small and the operating mode is the ventilation mode, all the fans can be controlled to turn on. For example, when the temperature difference is large and the operating mode is the cold air or hot air mode, the fans corresponding to the places with large temperature differences can be controlled to turn off, and so on. In this way, the first-level forced cooling system and the second-level forced cooling system can be automatically and effectively linked to prevent the disconnection of the control of the second-level forced cooling system, which not only improves the control efficiency, but also ensures the thermal performance of the energy storage power station system and improves the system consistency and life.

[0110] Example 3

[0111] This embodiment provides an electronic device, which can be expressed in the form of a computing device (for example, a server device), including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the two-stage wind control method in Embodiment 1 can be implemented when the processor executes the computer program.

[0112] Figure 8 FIG. 4 shows a schematic diagram of the hardware structure of this embodiment. Figure 8As shown, the electronic device 9 specifically includes:

[0113] At least one processor 91, at least one memory 92, and a bus 93 for connecting different system components (including the processor 91 and the memory 92), wherein:

[0114] The bus 93 includes a data bus, an address bus, and a control bus.

[0115] The memory 92 includes a volatile memory, such as a random access memory (RAM) 921 and / or a cache memory 922 , and may further include a read-only memory (ROM) 923 .

[0116] Memory 92 also includes a program / utility 925 having a set (at least one) of program modules 924, such program modules 924 including but not limited to: an operating system, one or more application programs, other program modules and program data, each of which or some combination may include an implementation of a network environment.

[0117] The processor 91 executes various functional applications and data processing by running the computer programs stored in the memory 92, such as the two-stage wind control method in Embodiment 1 of the present invention.

[0118] The electronic device 9 can further communicate with one or more external devices 94 (e.g., keyboards, pointing devices, etc.). Such communication can be performed through an input / output (I / O) interface 95. In addition, the electronic device 9 can also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) through a network adapter 96. The network adapter 96 communicates with other modules of the electronic device 9 through a bus 93. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the electronic device 9, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.

[0119] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into multiple units / modules to be embodied.

[0120] Example 4

[0121] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the two-stage wind control method in Embodiment 1 is implemented.

[0122] The readable storage medium may include but is not limited to: a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device or any suitable combination of the above.

[0123] In a possible implementation manner, the present invention can also be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the two-stage wind control method in Example 1.

[0124] The program code for executing the present invention may be written in any combination of one or more programming languages, and may be executed entirely on a user device, partially on a user device, as an independent software package, partially on a user device and partially on a remote device, or entirely on a remote device.

[0125] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A two-stage wind control method, characterized in that: The wind control method comprises: Get the operation mode of the primary forced cooling system; Controlling the operating state of the fan of the secondary forced cooling system according to the operating mode and the temperature difference of the battery stack; The step of controlling the operating state of the fan of the secondary forced cooling system according to the operating mode and the temperature difference of the battery stack comprises: Obtain the temperature difference of the battery stack; Obtaining a preset high temperature difference interval corresponding to the operation mode; If the temperature difference is within the preset high temperature difference interval, the corresponding first target fan is turned off according to the temperature difference contribution of each fan in the running fans.

2. The two-stage wind control method according to claim 1, characterized in that: After the step of shutting down the corresponding first target fan, the following step is further included: Return to the steps of obtaining the temperature difference of the battery stack, obtaining the preset high temperature difference interval corresponding to the operating mode, and if the temperature difference is within the preset high temperature difference interval, shutting down the corresponding first target fan according to the temperature difference contribution of each fan in the running fans, until the temperature difference of the battery stack is within the preset low temperature difference interval.

3. The two-stage wind control method according to claim 1 or 2, characterized in that: After the step of obtaining the temperature difference of the battery stack, the following step is further included: If the temperature difference of the battery stack is within a preset low temperature difference range, the second target fan is turned on, where the second target fan represents all fans of the secondary forced cooling system.

4. The two-stage wind control method according to claim 1, characterized in that: The step of shutting down the corresponding first target fan according to the temperature difference contribution of each fan in operation includes: Acquire a first number of fans to be shut down according to the operation mode; For the running fans, they are sorted from high to low according to the contribution to the temperature difference; The wind turbines located in the front by the first number are taken as the first target wind turbines; The first target fan is turned off.

5. The two-stage wind control method according to claim 1, characterized in that: The preset high temperature difference interval includes a plurality of sub-high temperature intervals; If the temperature difference is within the preset high temperature difference range, the step of shutting down the corresponding first target fan according to the temperature difference contribution of each fan in operation includes: If the temperature difference is within one of the plurality of high temperature sub-intervals, obtaining a second quantity corresponding to the high temperature sub-interval; For the running fans, they are sorted from high to low according to the contribution to the temperature difference; The wind turbines located at the front of the second number are taken as the first target wind turbines; Turning off the first target fan; and / or, If the operation mode is a cooling mode, the first target fan is a fan corresponding to a low temperature area; if the operation mode is a heating mode, the first target fan is a fan corresponding to a high temperature area.

6. The two-stage wind control method according to claim 3, characterized in that: Before the step of the temperature difference of the battery stack being within the preset low temperature difference range, the step includes: The corresponding preset low temperature difference interval is obtained according to the operation mode.

7. A two-stage wind control system, characterized in that: The wind control system includes: a mode acquisition module and a fan control module; The mode acquisition module is used to acquire the operation mode of the primary forced cooling system; The fan control module is used to control the operating state of the fan of the secondary forced cooling system according to the operating mode and the temperature difference of the battery stack; wherein the step of controlling the operating state of the fan of the secondary forced cooling system according to the operating mode and the temperature difference of the battery stack comprises: obtaining the temperature difference of the battery stack; obtaining a preset high temperature difference interval corresponding to the operating mode; if the temperature difference is within the preset high temperature difference interval, shutting down the corresponding first target fan according to the temperature difference contribution of each fan in the running fans.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the two-stage wind control method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the two-stage wind control method according to any one of claims 1 to 6 is implemented.

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