Control method and control device of cooling system

Abstract

The invention provides a control method and device for a cooling system, and the method comprises the steps: obtaining the conductivity detection values of a cooling medium of a plurality of cooling systems, and enabling the cooling systems to be used for cooling an energy storage valve; and at least one cooling system in the multiple cooling systems is controlled according to the conductivity detection value, so that the conductivity of the cooling media of the multiple cooling systems tends to be balanced. According to the control method provided by the invention, the problem that the conductivity of the cooling media in the multiple cooling systems is unbalanced can be solved, and the operation reliability of the energy storage valve is improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage systems, and in particular to a control method and a control device for a cooling system. Background Art

[0002] High-pressure direct-mounted energy storage has a highly modular structure and can meet the needs of high efficiency, high reliability, economy and safety, and is gaining more and more attention and development. High-pressure direct-mounted energy storage valves generate a lot of heat during operation, and a cooling system is needed to dissipate the heat from the energy storage valves. There are a large number of energy storage valves installed in the energy storage valve hall. In order to achieve reliable heat dissipation, it is usually necessary to configure multiple independent cooling systems to cool the energy storage valves.

[0003] Currently, since different cooling systems are independent of each other, it is easy for the conductivity of the cooling medium in multiple cooling systems to be unbalanced, which will cause unbalanced voltage protection of the DC bus to the ground and reduce the operating reliability of the energy storage valve. Summary of the invention

[0004] The present application provides a control method and a control device for a cooling system, which can solve the problem of uneven conductivity of cooling media in multiple cooling systems and improve the operating reliability of an energy storage valve.

[0005] In a first aspect, a method for controlling a cooling system is provided, comprising: obtaining conductivity detection values ​​of cooling media of multiple cooling systems, wherein the cooling systems are used to cool energy storage valves; and controlling at least one cooling system among the multiple cooling systems according to the conductivity detection values ​​so that the conductivity of the cooling media of the multiple cooling systems tends to be balanced.

[0006] According to the control method of the cooling system provided in the embodiment of the present application, at least one conductivity detection value of the cooling medium of each cooling system in the multiple cooling systems is first obtained, and then at least one cooling system in the multiple cooling systems is controlled according to the obtained conductivity detection value, that is, the conductivity of the cooling medium in the at least one cooling system is adjusted so that the conductivity of the cooling medium in the multiple cooling systems tends to be balanced. Since the conductivity of the cooling medium in the multiple cooling systems tends to be balanced, the resistance of the cooling pipelines of different energy storage valves to the ground also tends to be balanced, and the resistance of the DC bus to the ground also tends to be balanced, thereby avoiding or alleviating the unbalanced voltage protection caused by the bus to the ground, and improving the operating reliability of the energy storage valve.

[0007] The present application can monitor the conductivity of multiple cooling systems at the same time, and can periodically obtain the conductivity detection values ​​of the multiple cooling systems in real time, and then can control the multiple cooling systems in linkage according to the conductivity detection values, for example, adjusting the conductivity of one or more cooling systems to make the conductivity of the cooling medium of the multiple cooling systems tend to be balanced, that is, to achieve a balanced design of the resistance to ground of the cooling pipelines of different energy storage valves. The control method provided by the present application also has the advantages of simple control logic and easy implementation.

[0008] In a possible implementation, controlling at least one cooling system among the multiple cooling systems according to the conductivity detection value includes: controlling the first cooling system according to a first conductivity detection value corresponding to the first cooling system, wherein the first cooling system is any one of the at least one cooling system.

[0009] In a possible implementation, controlling the first cooling system according to a first conductivity detection value corresponding to the first cooling system includes: controlling the first cooling system according to the first conductivity detection value and a preset conductivity expected value.

[0010] In a possible implementation, controlling the first cooling system according to a first conductivity detection value corresponding to the first cooling system includes: controlling the first cooling system according to the first conductivity detection value and an average conductivity value of the multiple cooling systems, wherein the average conductivity value is determined based on the conductivity detection value.

[0011] In a possible implementation, before controlling at least one cooling system among the multiple cooling systems according to the conductivity detection value, the method further includes: determining the at least one cooling system from the multiple cooling systems according to the conductivity detection value.

[0012] In a possible implementation, controlling at least one cooling system among the multiple cooling systems according to the conductivity detection value includes: controlling an electric regulating valve of the at least one cooling system to change the flow rate of the cooling medium flowing through the deionization device.

[0013] In a possible implementation, the cooling system includes a main circulation loop and a deionization branch arranged in parallel, the deionization device is arranged on the deionization branch, a main circulation loop is provided with a main circuit conductivity monitor, and the conductivity detection value is obtained by detection by the main circuit conductivity monitor.

[0014] In a possible implementation, the method further includes: determining that a second conductivity detection value corresponding to a second cooling system among the multiple cooling systems is greater than a preset threshold; and outputting an alarm signal for the second cooling system.

[0015] In a second aspect, a control device for a cooling system is provided, comprising: an acquisition unit for acquiring conductivity detection values ​​of cooling media of multiple cooling systems, wherein the cooling systems are used to cool energy storage valves; and a processing unit for controlling at least one cooling system among the multiple cooling systems according to the conductivity detection values ​​so that the conductivity of the cooling media of the multiple cooling systems tends to be balanced.

[0016] In a possible implementation, the processing unit is specifically configured to: control the first cooling system according to a first conductivity detection value corresponding to the first cooling system, wherein the first cooling system is any one of the at least one cooling system.

[0017] In a possible implementation manner, the processing unit is specifically configured to control the first cooling system according to the first conductivity detection value and a preset conductivity expected value.

[0018] In a possible implementation, the processing unit is specifically configured to control the first cooling system according to the first conductivity detection value and an average conductivity value of the plurality of cooling systems, wherein the average conductivity value is determined according to the conductivity detection value.

[0019] In a possible implementation manner, the processing unit is further configured to: determine the at least one cooling system from the plurality of cooling systems according to the conductivity detection value.

[0020] In a possible implementation, the processing unit is specifically configured to: control the electric regulating valve of the at least one cooling system to change the flow rate of the cooling medium flowing through the deionization device.

[0021] In a possible implementation, the cooling system includes a main circulation loop and a deionization branch arranged in parallel, the deionization device is arranged on the deionization branch, a main circulation loop is provided with a main circuit conductivity monitor, and the conductivity detection value is obtained by detection by the main circuit conductivity monitor.

[0022] In a possible implementation, the processing unit is further used to: determine that a second conductivity detection value corresponding to a second cooling system among the multiple cooling systems is greater than a preset threshold; and output an alarm signal for the second cooling system.

[0023] In a third aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program runs on an electronic device, the electronic device executes the control method provided by any one of the implementations in the first aspect.

[0024] In a fourth aspect, a control device for a cooling system is provided, comprising: a processor; a memory; and a computer program, wherein the computer program is stored in the memory, and when the computer program is executed by the processor, the control device executes the control method provided by any one of the implementations in the first aspect.

[0025] In a fifth aspect, a computer program product is provided, comprising: a computer program code, which, when executed on an electronic device, enables the electronic device to execute the control method provided by any one of the implementations in the first aspect.

[0026] In a sixth aspect, a chip is provided, comprising: a processor for calling and running a computer program from a memory, so that an electronic device equipped with the chip executes the control method provided by any one of the implementations in the first aspect.

[0027] It can be understood that the control device provided in the second and fourth aspects, the computer-readable storage medium provided in the third aspect, the computer program product provided in the fifth aspect, and the chip provided in the sixth aspect are all used to execute the control method provided in the first aspect. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of an application scenario of the control method of the cooling system provided in an embodiment of the present application.

[0029] Figure 2 This is a flowchart of an example of a method for controlling a cooling system provided in an embodiment of the present application.

[0030] Figure 3 This is a flowchart of another example of the control method of the cooling system provided in an embodiment of the present application.

[0031] Figure 4 It is a structural schematic diagram of an example of a cooling system provided in an embodiment of the present application.

[0032] Figure 5 It is a structural schematic diagram of another example of the cooling system provided in an embodiment of the present application.

[0033] Figure 6It is a schematic block diagram of an example of a control device for a cooling system provided in an embodiment of the present application.

[0034] Figure 7 It is a structural block diagram of another example of the control device of the cooling system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solution in the present application will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0036] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0037] The term "include" herein indicates the presence of the described features, integral bodies, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or their collections. The terms "include", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0038] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0039] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0040] With the development of smart grid, energy storage technology has become an important part of its development process. Among various energy storage technologies, high-voltage direct-mounted energy storage technology integrates the voltage source converter (VSC) valve and the DC energy storage valve, and has the advantages of high modularity, good economic benefits, and high operational reliability, and has gradually been developed and applied.

[0041] The high-voltage direct-mounted energy storage valve is composed of multiple energy storage submodules, which are composed of power module units and battery cabinet units. During operation, both the power module and the battery cabinet unit will generate a large amount of heat. If the heat cannot be effectively dissipated, the power equipment in the energy storage valve will age faster or even fail abnormally. At the same time, excessive battery temperature will cause the battery's electrochemical reaction to become unstable, which may cause the battery's consistency to decrease and its capacity to decay, or even cause a short circuit in the battery, causing fire and combustion, resulting in serious safety accidents.

[0042] It can be seen that the heat dissipation of the energy storage valve has become an important factor in determining its stable and safe operation. At present, the energy storage valve can be cooled by a cooling system with liquid cooling as the heat dissipation method. Specifically, the cooling system includes an internal cooling heat dissipation device, an external cooling heat dissipation device and a circulating main pump, and the above-mentioned devices are connected in sequence through pipelines to form a circulation loop. After absorbing the heat generated by the energy storage valve, the cooling medium (such as deionized water) in the internal cooling heat dissipation device flows to the external cooling heat dissipation device through the pipeline under the action of the circulating main pump. The external cooling heat dissipation device dissipates the heat to the external environment, and the cooling medium after heat dissipation and cooling returns to the internal cooling heat dissipation device again, so that the cycle is repeated, and the heat generated by the energy storage valve is continuously taken away and dissipated to the external environment.

[0043] There are many energy storage valves installed in the energy storage valve hall. In order to achieve reliable heat dissipation, it is usually necessary to configure multiple independent cooling systems to cool the energy storage valves. At present, since different cooling systems are independent of each other, it is easy to have an unbalanced conductivity of the cooling medium in multiple cooling systems, which will cause unbalanced resistance of the cooling pipes of different energy storage valves to the ground, and then cause unbalanced resistance of the DC bus to the ground, which will cause unbalanced voltage protection between the bus and the ground, thereby reducing the operating reliability of the energy storage valve.

[0044] Based on this, an embodiment of the present application provides a control method for a cooling system, which can solve the problem of uneven conductivity of the cooling medium in multiple cooling systems and improve the operating reliability of the energy storage valve by linkage control of the conductivity of the cooling medium in multiple cooling systems.

[0045] According to the control method of the cooling system provided in the embodiment of the present application, the control device first obtains the conductivity detection value of the cooling medium of multiple cooling systems, and the multiple cooling systems can cool down a large number of energy storage valves in the same valve hall. Afterwards, the control device controls at least one cooling system among the multiple cooling systems according to the obtained conductivity detection value, that is, adjusts the conductivity of the cooling medium in the at least one cooling system so that the conductivity of the cooling medium in the multiple cooling systems tends to be balanced. Since the conductivity of the cooling medium in the multiple cooling systems tends to be balanced, the resistance of the cooling pipelines of different energy storage valves to the ground also tends to be balanced, and the resistance of the DC bus to the ground also tends to be balanced, thereby avoiding or alleviating the unbalanced voltage protection caused by the bus to the ground, and improving the operating reliability of the energy storage valve.

[0046] Figure 1 The control method of the cooling system provided in the embodiment of the present application can be applied to Figure 1 In the scenario shown. Figure 1 As shown, the scene includes an energy storage valve 10 , a cooling system 20 , a control device 30 and a valve hall 40 .

[0047] The energy storage valve 10 refers to an energy storage device that can achieve energy storage or power output through valve control. The energy storage device can be implemented in a variety of ways, such as batteries, supercapacitors, flywheel energy storage, gas compression energy storage, or any combination thereof. In addition, other devices known in the art that can store electrical energy can also be selected.

[0048] The energy storage valve 10 can be, for example, a high-voltage direct-mounted energy storage valve, a high-voltage direct-mounted energy storage valve, etc., which can provide emergency power support for the power grid and increase the transmission capacity of the DC power grid; in addition, the energy storage valve 10 can also absorb a certain amount of energy to provide energy support for the power grid system and solve the problem of "wind and solar abandonment" when large-scale new energy is connected to the power grid. A large number of energy storage valves 10 can be installed in the valve hall 40 in a certain distribution manner.

[0049] The cooling system 20 is used to cool the energy storage valve 10, and the heat generated by the energy storage valve 10 can be continuously pumped to the external environment through the cooling system 20. In some cases, the specific structure of the cooling system 20 can be as follows Figure 4 and Figure 5 As shown in, but not limited to.

[0050] The cooling system 20 can cool down one or more energy storage valves 10. When a cooling system 20 cools down multiple energy storage valves 10, Figure 1 , Figure 4 and Figure 5As shown, multiple energy storage valves 10 are cooled by providing multiple heat dissipation branches connected in parallel. In this case, one or more energy storage valves 10 can be provided on each heat dissipation branch.

[0051] like Figure 1 As shown, due to the large number of energy storage valves 10 installed in the valve hall 40, one cooling system 20 obviously cannot meet the heat dissipation requirements of the energy storage valves 10, and multiple independent cooling systems 20 can be set. Here, the cooling systems 20 are independent of each other, at least including that the cooling media in different cooling systems 20 are independent of each other and do not communicate with each other. Since the cooling media in different cooling systems 20 are independent of each other, they can have different electrical conductivities.

[0052] The control device 30 is connected to the cooling system 20 by wired or wireless communication to realize the control of the cooling system 20. For example, the control device 30 can monitor the operation of the cooling system 20 to reliably realize the cooling of the energy storage valve 10. The control device 30 can be, for example, any electronic device, chip, controller or processor such as a host computer, a slave computer, an industrial computer, an industrial computer, a programmable logic controller (PLC), etc. that can realize the above functions. For example, the control device 30 can be a cooling control and protection system for an energy storage valve. The control method of the cooling system provided in the embodiment of the present application can be executed by the control device 30 to solve the problem of uneven conductivity of the cooling medium in multiple cooling systems.

[0053] like Figure 1 As shown, according to the control method of the cooling system provided by the embodiment of the present application, the control device 30 is connected to each cooling system 20 in the figure in communication, and the control device 30 can first obtain the conductivity detection value of the cooling medium in each cooling system 20. For example, each cooling system 20 includes a conductivity monitor for obtaining the conductivity value of the cooling medium, and the cooling system 20 can periodically report the conductivity detection value obtained by the conductivity monitor to the control device 30. Afterwards, the control device 30 controls at least one cooling system 20 among the multiple cooling systems 20 according to the obtained conductivity detection value, that is, adjusts the conductivity of the cooling medium in the at least one cooling system 20, so that the conductivity of the cooling medium of the multiple cooling systems 20 tends to be balanced.

[0054] For example, the conductivity detection value of the cooling medium in one of the cooling systems 20 (referred to as the first cooling system) is much larger than the conductivity detection values ​​of the remaining cooling systems 20, and the conductivity detection values ​​of the remaining cooling systems 20 are roughly the same. At this time, only the first cooling system can be controlled to reduce the conductivity of the cooling medium in the first cooling system so that the conductivity of multiple cooling systems 20 tends to be balanced.

[0055] based on Figure 1 The application scenario shown, combined with the modulation method of the cooling system provided in the embodiment of the present application, will continue to specifically analyze and solve the technical problems raised in the present application.

[0056] See attached Figure 2 , Figure 2 1 is a flow chart of a control method 100 for a cooling system provided in an embodiment of the present application. The execution body of the control method 100 may be the aforementioned control device 30, such as Figure 2 As shown, the control method 100 includes step 110 and step 120 .

[0057] Step 110: The control device obtains conductivity detection values ​​of cooling media of multiple cooling systems, where the cooling systems are used to cool the energy storage valves.

[0058] Step 120: The control device controls at least one cooling system among the multiple cooling systems according to the conductivity detection value, so that the conductivity of the cooling medium of the multiple cooling systems tends to be balanced.

[0059] Specifically, the control device obtains the conductivity detection value of at least one cooling medium of each cooling system in the multiple cooling systems, and each cooling system is used to cool down one or more energy storage valves. After obtaining the conductivity detection value, the control device can generate a corresponding control instruction (decision) according to the conductivity detection value to control at least one cooling system in the multiple cooling systems, that is, to adjust the conductivity of the cooling medium of the at least one cooling system so that the conductivity of the cooling medium of the multiple cooling systems tends to be balanced. The multiple cooling systems are independent of each other, and the at least one cooling system can be part or all of the multiple cooling systems, for example, it can be one, two, three or all of the cooling systems.

[0060] Here, making the conductivity of the cooling medium of multiple cooling systems tend to be balanced means making the conductivity of the cooling medium of multiple cooling systems closer and more balanced. For example, before step 120, the difference between the maximum value and the minimum value in the conductivity of the cooling medium of multiple cooling systems is difference #1, and after step 120 is executed, the difference between the maximum value and the minimum value in the conductivity of the cooling medium of multiple cooling systems is difference #2. At this time, the conductivity of the cooling medium of multiple cooling systems tends to be balanced, so difference #2 is smaller than difference #1. The above difference can be understood as a "bandwidth", and making the conductivity tend to be balanced means that the "bandwidth" becomes smaller (narrower).

[0061] For example, the cooling system having the largest and / or smallest conductivity detection value among the multiple cooling systems may be controlled so that the conductivity of the cooling medium of the multiple cooling systems tends to be balanced.

[0062] According to the control method 100 of the cooling system provided in the embodiment of the present application, at least one conductivity detection value of the cooling medium of each cooling system in the multiple cooling systems is first obtained, and then at least one cooling system in the multiple cooling systems is controlled according to the obtained conductivity detection value, that is, the conductivity of the cooling medium in the at least one cooling system is adjusted so that the conductivity of the cooling medium in the multiple cooling systems tends to be balanced. Since the conductivity of the cooling medium in the multiple cooling systems tends to be balanced, the resistance of the cooling pipelines of different energy storage valves to the ground also tends to be balanced, and the resistance of the DC bus to the ground also tends to be balanced, thereby avoiding or alleviating the unbalanced voltage protection caused by the bus to the ground, and improving the operating reliability of the energy storage valve.

[0063] The present application can monitor the conductivity of multiple cooling systems at the same time, and can periodically obtain the conductivity detection values ​​of the multiple cooling systems in real time, and then can control the multiple cooling systems in linkage according to the conductivity detection values, for example, adjusting the conductivity of one or more cooling systems to make the conductivity of the cooling medium of the multiple cooling systems tend to be balanced, that is, to achieve a balanced design of the resistance to ground of the cooling pipelines of different energy storage valves. The control method 100 provided in the present application also has the advantages of simple control logic and easy implementation.

[0064] See attached Figure 3 , Figure 3 200 is a flow chart of a control method 200 for a cooling system provided in an embodiment of the present application. The execution body of the control method 200 may be the aforementioned control device 30, such as Figure 3 As shown, the control method 200 includes step 210 , step 220 and step 230 .

[0065] Step 210: The control device obtains conductivity detection values ​​of cooling media of multiple cooling systems, where the cooling systems are used to cool the energy storage valves.

[0066] Step 220: The control device determines at least one cooling system from the plurality of cooling systems according to the conductivity detection value.

[0067] Step 230: The control device controls the first cooling system according to the first conductivity detection value corresponding to the first cooling system so that the conductivity of the cooling medium of the plurality of cooling systems tends to be balanced, wherein the first cooling system is any one of the at least one cooling system.

[0068] Specifically, the control device obtains the conductivity detection value of at least one cooling medium of each of the multiple cooling systems, and then determines at least one cooling system from the multiple cooling systems according to the obtained conductivity detection value, and then controls the determined (i.e., selected) cooling system, i.e., performs conductivity adjustment, while the remaining (i.e., unselected) cooling systems may not be controlled, i.e., no conductivity adjustment is performed, so that there is no need to control all cooling systems. The above settings can achieve efficient linkage control of the multiple cooling systems.

[0069] Furthermore, for at least one cooling system that has been determined, such as the first cooling system, the first cooling system can be controlled according to the conductivity detection value corresponding to the first cooling system—the first conductivity detection value. The first cooling system here can be any one of the at least one cooling system that has been determined, that is, any one of the at least one cooling system uses the same control logic, that is, the cooling system is controlled according to its corresponding conductivity detection value to adjust the conductivity of the cooling system, thereby making the conductivity of the cooling medium of the multiple cooling systems tend to be balanced. The above settings are conducive to simplifying the control logic, and controlling the cooling system according to its own conductivity detection value is conducive to achieving precise control.

[0070] As a possible implementation manner, the control device may control the first cooling system according to the first conductivity detection value and a preset conductivity expected value.

[0071] Here, the expected conductivity value may also be referred to as a conductivity target value. The expected conductivity value is the conductivity value that each cooling system expects to obtain. The conductivity of the cooling medium in each cooling system is expected to be maintained at the expected conductivity value as much as possible, for example, equal to or as close to the expected conductivity value as possible (within a preset range). For example, the expected conductivity value may be 0.2 μS / cm, 0.3 μS / cm, 0.4 μS / cm, or 0.5 μS / cm, etc.

[0072] In the aforementioned step 220, the control device can determine at least one cooling system from the multiple cooling systems based on the conductivity detection value and the conductivity expected value. For example, the at least one cooling system determined can be a cooling system whose difference (deviation) between the conductivity detection value and the conductivity expected value exceeds a preset range (e.g., 5% or 10% up and down). In the aforementioned step 230, the first cooling system can be controlled based on the first conductivity detection value and the preset conductivity expected value so that the conductivity of the first cooling system can reach or approach the conductivity expected value (e.g., fall within the preset range). In this way, the conductivity of each cooling system reaches or approaches the conductivity expected value, thereby enabling the conductivity of multiple cooling systems to tend to be balanced.

[0073] As another possible implementation manner, the control device may control the first cooling system according to the first conductivity detection value and an average conductivity value of the plurality of cooling systems, wherein the average conductivity value is determined according to the conductivity detection value.

[0074] Here, the control device may first determine the conductivity average value according to the multiple conductivity detection values ​​obtained in the aforementioned step 210. For example, the conductivity detection values ​​of the N cooling systems are G 1 , G 2 , G 3 …G N , then the average conductivity G a =(G 1 +G 2 +G 3 +…+G N ) / N. Among them, G 1 , G 2 , G 3 …G N It may be a directly acquired conductivity detection value, or a value indirectly obtained by calculating (for example, taking an average) a plurality of corresponding conductivity detection values.

[0075] In the aforementioned step 220, the control device may determine at least one cooling system from the plurality of cooling systems according to the conductivity detection value and the conductivity average value. For example, the at least one cooling system determined may be a cooling system whose difference (deviation) between the conductivity detection value and the conductivity average value exceeds a preset range (e.g., fluctuation of 5% or 10%).

[0076] In the aforementioned step 230, the first cooling system can be controlled according to the first conductivity detection value and the conductivity average value, so that the conductivity of the first cooling system can reach or approach the conductivity average value (for example, fall within a preset range). In this way, the conductivity of each cooling system reaches or approaches the conductivity average value, thereby making the conductivity of multiple cooling systems tend to be balanced.

[0077] The following describes how the control device in the embodiment of the present application specifically controls the cooling system in combination with the specific structure of the cooling system to adjust the conductivity of the cooling system.

[0078] Figure 4 Schematic diagram of a cooling system 20 provided in an embodiment of the present application. Figure 4 As shown, the cooling system 20 is mainly composed of a circulating main pump 21, an external cooling device 22, a main circuit conductivity monitor 23, an electric regulating valve 24, a deionization device 25, a deionization branch conductivity monitor 26 and connecting pipes.

[0079] The cooling system 20 cools one or more energy storage valves 10. The energy storage valve 10, the circulation main pump 21, the external cooling device 22, the main circuit conductivity monitor 23 and the connecting pipeline constitute the main circulation loop. The function of the main circuit conductivity monitor 23 is to monitor the conductivity of the cooling medium in the main circulation loop and upload the monitoring data to the control device (such as the energy storage valve cooling control protection system).

[0080] The electric regulating valve 24, the deionizing device 25, the deionizing branch conductivity monitor 26 and the connecting pipeline constitute the deionizing branch. The deionizing device 25 is used to remove ions in the cooling medium and reduce the conductivity of the cooling medium. Because electrical corrosion may occur in the cooling system under high voltage operation, the conductivity of the internal circulating cooling medium can be controlled to be lower than 0.3μS / cm.

[0081] The function of the electric regulating valve 24 is to adjust the flow through the deionization branch, and the function of the deionization branch conductivity monitor 26 is to monitor the conductivity of the cooling medium in the deionization branch, and to provide an early warning of the operating status of the deionization device 25. For example, when the conductivity value of the deionization branch exceeds the replacement threshold, the deionization device 25 needs to be replaced.

[0082] Optionally, considering operational reliability, the electric control valve 24 can be set to be one in use and one in standby, with one in operation and one in standby during normal operation.

[0083] Optionally, considering the operational reliability, the deionization device 25 can be configured as one in use and one in standby, that is, one in operation and one in standby during normal operation.

[0084] Figure 5 FIG. 2 is a schematic diagram of another example of the cooling system 20 provided in the embodiment of the present application. Figure 4 The embodiment shown, as Figure 5 As shown, the electric regulating valve 24 in this embodiment can also be set on the main circulation loop. By adjusting the opening of the electric regulating valve 24 on the main circulation loop, the flow rate flowing through the deionization branch (i.e., the deionization device 25) can also be adjusted. In addition, Figure 5 In the illustrated embodiment, the deionization branch conductivity monitor 26 may not be provided.

[0085] based on Figure 4 or Figure 5 In the cooling system 20 shown in the embodiment of the present application, the control device controls at least one cooling system among the multiple cooling systems according to the conductivity detection value, including:

[0086] At least one electric regulating valve 24 of the cooling system is controlled to change the flow rate of the cooling medium flowing through the deionization device 25 .

[0087] Specifically, the control device is electrically connected to the electric regulating valve 24, and the opening of the electric regulating valve 24 can be adjusted to change the flow rate of the cooling medium flowing through the deionization device 25, for example, the flow rate of the cooling medium flowing through the deionization device 25 can be increased, at which time the conductivity of the cooling system can be reduced; or the flow rate of the cooling medium flowing through the deionization device 25 can be reduced, at which time the conductivity of the cooling system can be increased.

[0088] For example, the conductivity detection value of the first cooling system is G 1 , and the average conductivity of multiple cooling systems is G a , at this time, combined with Figure 4 In the cooling system 20 shown, the control device controls the first cooling system according to the first conductivity detection value and the conductivity average value of the plurality of cooling systems, which can be performed in the following manner:

[0089] If G 1 >G a , the opening of the electric regulating valve 24 is increased to increase the flow through the deionization branch, reduce the conductivity value of the deionization branch, and then reduce the conductivity of the cooling medium in the main circulation loop. In the next detection cycle, if it is determined that G 1 / G a If the ratio does not decrease, an alarm is issued to replace the deionization device 25.

[0090] If G 1 <G a, the opening of the electric regulating valve 24 is reduced to reduce the flow through the deionization branch, increase the conductivity value of the deionization branch, and then increase the conductivity of the cooling medium in the main circulation loop; if G 1 / G a If the ratio does not increase, an alarm will be triggered for maintenance.

[0091] The opening adjustment ratio of the electric regulating valve 24 is 1 / G a The size of the ratio is related to G 1 / G a The larger the ratio is, the greater the opening adjustment of the electric control valve 24 is.

[0092] like Figure 4 and Figure 5 As shown, in the embodiment of the present application, the cooling system includes a main circuit and a deionization branch arranged in parallel, the deionization device 25 is arranged on the deionization branch, and a main circuit conductivity monitor 23 is arranged on the main circulation circuit, and the aforementioned conductivity detection value is obtained by detection by the main circuit conductivity monitor 23. That is, the aforementioned conductivity detection value can be the conductivity detection value of the cooling medium in the main circulation circuit of the cooling system, and at this time, the conductivity of each cooling system can be more intuitively reflected, which is conducive to realizing the precise adjustment of the conductivity, and further ensuring that the conductivity of the cooling medium of multiple cooling systems can be balanced.

[0093] Optionally, in other implementations, the aforementioned conductivity detection value may also be the conductivity detection value of the cooling medium in the deionized branch of the cooling system. For example, the conductivity detection value may also be the conductivity detection value of the cooling medium in the deionized branch of the cooling system. Figure 4 The deionization branch conductivity monitor 26 is used to obtain the conductivity.

[0094] As a possible implementation manner, the aforementioned method 200 further includes the following steps:

[0095] The control device determines that a second conductivity detection value corresponding to a second cooling system among the multiple cooling systems is greater than a preset threshold value;

[0096] The control device outputs an alarm signal for the second cooling system.

[0097] Specifically, after the control device obtains the conductivity detection value, if it is determined that the second conductivity detection value corresponding to the second cooling system is greater than a preset threshold value (e.g., the conductivity upper limit threshold value), an alarm signal can be output in time to remind the staff to take timely maintenance, shutdown maintenance, or replace the deionization device 25, so as to ensure that the cooling system can have stable working performance and can run stably for a long time. The preset threshold value can be, for example, 0.7μS / cm or 0.8μS / cm, and the alarm signal can be a pop-up window on the display interface, a text message reminder, or an audible and visual signal.

[0098] Combination of the above Figures 1 to 5 The control method of the cooling system provided by the embodiment of the present application is described in detail. Figure 6 , Figure 7 The control device of the cooling system of the embodiment of the present application is described. It should be understood that Figure 6 , Figure 7 The control device shown can achieve Figure 2 or Figure 3 One or more steps in the method flow shown are not described in detail here to avoid repetition.

[0099] Figure 6 is a schematic block diagram of a control device 300 for a cooling system provided in an embodiment of the present application, such as Figure 6 As shown, the control device 300 includes an acquisition unit 310 and a processing unit 320 .

[0100] The acquisition unit 310 is used to acquire conductivity detection values ​​of cooling media of multiple cooling systems, where the cooling systems are used to cool the energy storage valves.

[0101] The processing unit 320 is used to control at least one cooling system among the multiple cooling systems according to the conductivity detection value, so that the conductivity of the cooling medium of the multiple cooling systems tends to be balanced.

[0102] Optionally, the processing unit 320 is specifically used to: control the first cooling system according to a first conductivity detection value corresponding to the first cooling system, wherein the first cooling system is any one of the at least one cooling system.

[0103] Optionally, the processing unit 320 is specifically configured to: control the first cooling system according to the first conductivity detection value and a preset conductivity expected value.

[0104] Optionally, the processing unit 320 is specifically used to: control the first cooling system according to the first conductivity detection value and an average conductivity value of the multiple cooling systems, wherein the average conductivity value is determined according to the conductivity detection value.

[0105] Optionally, the processing unit 320 is further configured to: determine the at least one cooling system from the plurality of cooling systems according to the conductivity detection value.

[0106] Optionally, the processing unit 320 is specifically configured to: control the electric regulating valve of the at least one cooling system to change the flow rate of the cooling medium flowing through the deionization device.

[0107] Optionally, the cooling system includes a main circulation loop and a deionization branch arranged in parallel, the deionization device is arranged on the deionization branch, a main circulation loop is provided with a main circuit conductivity monitor, and the conductivity detection value is obtained by detection by the main circuit conductivity monitor.

[0108] Optionally, the processing unit 320 is further used to: determine that a second conductivity detection value corresponding to a second cooling system among the multiple cooling systems is greater than a preset threshold; and output an alarm signal for the second cooling system.

[0109] Specifically, the control device 300 may correspond to the control device in the control method 100 or the control method 200 according to the embodiment of the present application. The control device 300 may include a Figure 2 or Figure 3 In addition, each unit in the control device 300 and the above-mentioned other operations and / or functions are respectively for realizing the corresponding processes of the control method 100 and the control method 200. The specific process of each unit executing the above-mentioned corresponding steps has been described in detail in the control method 100 and the control method 200, and will not be repeated here for the sake of brevity.

[0110] The present application also provides a control device 400 for a cooling system. Figure 7 4 is a block diagram of a control device 400 for a cooling system provided in an embodiment of the present application. Figure 7 As shown, the control device 400 includes a processor 410 and a memory 420 , and the above-mentioned components can be connected via one or more buses 430 .

[0111] The control device 400 further includes a computer program 421, which is stored in the memory 420. When the computer program 421 is executed by the processor 410, the control device 400 executes the above Figure 2 The control method 100 shown or Figure 3 The control method 200 shown in FIG. 1 is a control method 200. All relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding physical device, and will not be repeated here.

[0112] An embodiment of the present application also provides a computer-readable storage medium, which includes a computer program. When the computer-readable storage medium is run on a computer, the computer executes the method provided by the above method embodiment.

[0113] An embodiment of the present application also provides a computer program product, including: a computer program code, when the computer program code is executed on an electronic device, the electronic device executes the method provided by the above method embodiment.

[0114] An embodiment of the present application also provides a chip system, including a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that an electronic device equipped with the chip system executes the method provided in the above method embodiment.

[0115] Among them, the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

[0116] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), and the processor 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. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0117] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0118] 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, or a combination of computer software and electronic hardware. 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.

[0119] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0120] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0121] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0122] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0123] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0124] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for controlling a cooling system, characterized in that: include: Obtaining conductivity detection values ​​of cooling media of a plurality of cooling systems, wherein the cooling systems are used to cool energy storage valves; At least one cooling system among the plurality of cooling systems is controlled according to the conductivity detection value, so that the conductivity of the cooling medium of the plurality of cooling systems tends to be balanced.

2. The control method according to claim 1, characterized in that: The controlling at least one cooling system among the plurality of cooling systems according to the conductivity detection value comprises: The first cooling system is controlled according to a first conductivity detection value corresponding to the first cooling system, wherein the first cooling system is any one of the at least one cooling system.

3. The control method according to claim 2, characterized in that: The controlling the first cooling system according to the first conductivity detection value corresponding to the first cooling system includes: The first cooling system is controlled according to the first conductivity detection value and a preset conductivity expected value.

4. The control method according to claim 2, characterized in that: The controlling the first cooling system according to the first conductivity detection value corresponding to the first cooling system includes: The first cooling system is controlled according to the first conductivity detection value and an average conductivity value of the plurality of cooling systems, wherein the average conductivity value is determined according to the conductivity detection value.

5. The control method according to any one of claims 1 to 4, characterized in that: The controlling at least one cooling system among the plurality of cooling systems according to the conductivity detection value comprises: The electric regulating valve (24) of the at least one cooling system is controlled to change the flow rate of the cooling medium flowing through the deionization device (25).

6. The control method according to claim 5, characterized in that: The cooling system comprises a main circulation loop and a deionization branch which are arranged in parallel, the deionization device (25) is arranged on the deionization branch, a main circulation loop is provided with a main circulation conductivity monitor (23), and the conductivity detection value is obtained by detection by the main circulation conductivity monitor (23).

7. The control method according to any one of claims 1 to 4, characterized in that: The method further comprises: Determining that a second conductivity detection value corresponding to a second cooling system among the plurality of cooling systems is greater than a preset threshold; An alarm signal for the second cooling system is output.

8. A control device for a cooling system, characterized in that: include: An acquisition unit, used to acquire conductivity detection values ​​of cooling media of a plurality of cooling systems, wherein the cooling systems are used to cool the energy storage valves; The processing unit is used to control at least one cooling system among the multiple cooling systems according to the conductivity detection value, so that the conductivity of the cooling medium of the multiple cooling systems tends to be balanced.

9. The control device according to claim 8, characterized in that: The processing unit is specifically used for: The first cooling system is controlled according to a first conductivity detection value corresponding to the first cooling system, wherein the first cooling system is any one of the at least one cooling system.

10. The control device according to claim 9, characterized in that: The processing unit is specifically used for: The first cooling system is controlled according to the first conductivity detection value and a preset conductivity expected value.

11. The control device according to claim 9, characterized in that: The processing unit is specifically used for: The first cooling system is controlled according to the first conductivity detection value and an average conductivity value of the plurality of cooling systems, wherein the average conductivity value is determined according to the conductivity detection value.

12. The control device according to any one of claims 8 to 11, characterized in that: The processing unit is specifically used for: The electric regulating valve (24) of the at least one cooling system is controlled to change the flow rate of the cooling medium flowing through the deionization device (25).

13. The control device according to claim 12, characterized in that: The cooling system comprises a main circulation loop and a deionization branch which are arranged in parallel, the deionization device (25) is arranged on the deionization branch, a main circulation loop is provided with a main circulation conductivity monitor (23), and the conductivity detection value is obtained by detection by the main circulation conductivity monitor (23).

14. The control device according to any one of claims 8 to 11, characterized in that: The processing unit is also used for: Determining that a second conductivity detection value corresponding to a second cooling system among the plurality of cooling systems is greater than a preset threshold; An alarm signal for the second cooling system is output.

15. A control device for a cooling system, characterized in that: include: processor; Memory; and a computer program, the computer program being stored in the memory, and when the computer program is executed by the processor, causing the control device to execute the control method according to any one of claims 1 to 7.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program runs on an electronic device, the electronic device executes the control method according to any one of claims 1 to 7.

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