Thermal management method, device and electronic equipment for integrated storage and charging device

Abstract

The present application is applicable to the field of thermal management technology, and provides a thermal management method, device and electronic device for a storage and charging integrated machine, including: obtaining the current temperature of the component to be managed; calculating the absolute value of the difference between the current temperature and the preset operating temperature of the component to be managed to obtain a first absolute value; when the first absolute value is less than the preset first difference threshold, judging whether the ambient temperature is beneficial to the thermal management of the component to be managed based on the current temperature, the preset operating temperature and the ambient temperature; when the ambient temperature is beneficial to the thermal management of the component to be managed, calculating the absolute value of the difference between the current temperature and the ambient temperature to obtain a second absolute value; when the second absolute value is greater than the preset second difference threshold, turning on the self-circulation mode. Through the above processing, it is helpful to reduce the cost required for thermal management.

Description

Technical Field

[0001] The present application belongs to the field of thermal management technology, and in particular, relates to a thermal management method, device, electronic device, computer-readable storage medium, and computer program product for a storage-charging integrated machine. Background Art

[0002] With the development of electric power technology, more and more devices use electricity as a power source, such as electric vehicles. Since the equipment will generate heat during operation, and excessive heat may damage the equipment itself and affect the life of the equipment, in order to increase the life of the equipment, it is usually necessary to perform thermal management on the equipment.

[0003] At present, the device is usually cooled when the temperature of the device is higher than its normal working temperature, or heated when the temperature of the device is lower than its normal working temperature. However, the above thermal management method may result in excessively high thermal management costs. Summary of the invention

[0004] The embodiments of the present application provide a thermal management method, device and electronic device for a storage-charging integrated machine, which can solve the problem of excessively high thermal management costs of existing storage-charging integrated machines.

[0005] In a first aspect, an embodiment of the present application provides a thermal management method for a storage-charging integrated machine, comprising:

[0006] Acquire the current temperature of the component to be managed, where the component to be managed is a component for energy storage or transmission of the storage-charging machine;

[0007] Calculating an absolute value of a difference between the current temperature and a preset operating temperature of the component to be managed to obtain a first absolute value;

[0008] In the case where the first absolute value is less than a preset first difference threshold, judging whether the ambient temperature is beneficial to the thermal management of the component to be managed according to the current temperature, the preset operating temperature and the ambient temperature, the ambient temperature being the temperature of the environment where the component to be managed is located;

[0009] When the ambient temperature is favorable for thermal management of the component to be managed, calculating an absolute value of a difference between the current temperature and the ambient temperature to obtain a second absolute value;

[0010] When the second absolute value is greater than a preset second difference threshold, the self-circulation mode is turned on. When the self-circulation mode is turned on, the thermal management system of the storage and charging machine is configured to transfer heat between the environment where the component to be managed is located and the heat transfer medium circulating in the pipeline to achieve thermal management of the component to be managed connected to the pipeline.

[0011] In the embodiment of the present application, when the absolute value of the difference between the current temperature of the component to be managed and the preset working temperature is less than the preset first difference threshold, it is determined whether the ambient temperature is beneficial to the thermal management of the component to be managed based on the current temperature, the preset working temperature and the ambient temperature. If it is beneficial, it is determined whether the absolute value of the difference between the current temperature and the ambient temperature is greater than the preset second difference threshold. If it is greater than the second difference threshold, the self-circulation mode is turned on. Since, when the absolute value of the difference between the current temperature and the preset working temperature is greater than the first difference threshold, the component to be managed is not heated or cooled directly by heating or cooling the heat transfer medium in the pipeline, but the self-circulation mode is turned on after certain conditions are met, and since the self-circulation mode realizes thermal management of the above-mentioned component to be managed connected to the pipeline by heat transfer between the environment where the component to be managed is located and the heat transfer medium circulating in the pipeline, that is, when performing thermal management through the self-circulation mode, no additional heat or cold is generated, thereby saving the cost caused by generating additional heat or cold. In addition, the self-circulation mode is turned on only when the absolute value of the difference between the current temperature and the preset working temperature is less than the first difference threshold, and the absolute value of the difference between the current temperature and the ambient temperature is greater than the second difference threshold, and the absolute value of the difference between the current temperature and the preset working temperature is less than the first difference threshold, indicating that the temperature of the component to be managed does not need to be increased or decreased much, and the absolute value of the difference between the current temperature and the ambient temperature is greater than the second difference threshold, indicating that the temperature difference between the component to be managed and the environment is large and the heat transfer rate is faster when the temperature difference is large. Therefore, the above-mentioned method of realizing thermal management of the component to be managed by turning on the self-circulation mode is beneficial to realizing thermal management of the corresponding component to be managed and can also reduce the cost of thermal management.

[0012] Optionally, the integrated storage and charging machine further includes a cold storage device, and after obtaining the second absolute value, further includes:

[0013] When the second absolute value is not greater than the second difference threshold, determining whether the current temperature is less than the preset operating temperature;

[0014] When the current temperature is greater than the preset operating temperature, the first cooling mode or the second cooling mode is selected to be turned on according to the current electricity price, wherein, when the first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of a refrigerant to achieve cooling of the component to be managed, and when the second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of the cold capacity of the cold storage device to achieve cooling of the component to be managed.

[0015] In the above method, when a cooling mode is selected according to the current electricity price to cool the component to be processed, it is possible to achieve cooling of the component to be managed and effectively control the cost of cooling.

[0016] Optionally, the step of selecting to start the first cooling mode or the second cooling mode according to the current electricity price includes:

[0017] When the current electricity price is less than a preset electricity price threshold, selecting to start the first cooling mode;

[0018] When the current electricity price is not less than the electricity price threshold, the second cooling mode is selected to be turned on.

[0019] Optionally, judging whether the ambient temperature is beneficial to the thermal management of the component to be managed according to the current temperature, the preset operating temperature and the ambient temperature includes:

[0020] When the current temperature is lower than the preset operating temperature and lower than the ambient temperature, it is determined that the ambient temperature is favorable for thermal management of the component to be managed; otherwise, it is determined that the ambient temperature is unfavorable for thermal management of the component to be managed.

[0021] Optionally, judging whether the ambient temperature is beneficial to the thermal management of the component to be managed according to the current temperature, the preset operating temperature and the ambient temperature includes:

[0022] When the current temperature is greater than the preset operating temperature and the current temperature is greater than the ambient temperature, it is determined that the ambient temperature is favorable for thermal management of the component to be managed; otherwise, it is determined that the ambient temperature is unfavorable for thermal management of the component to be managed.

[0023] Optionally, the integrated storage and charging machine further includes a circulation pump connected to the component to be managed through the pipeline, and the self-circulation mode is started, including:

[0024] Determining the rotation speed of the circulation pump according to the current temperature and the preset working temperature;

[0025] The circulation pump is started according to the determined rotation speed to start the self-circulation mode.

[0026] Since the set rotation speed is determined according to the current temperature of the component to be managed and the preset operating temperature, it is beneficial to improve the accuracy of the obtained rotation speed.

[0027] Optionally, after obtaining the second absolute value, the method further includes:

[0028] When the second absolute value is not greater than the second difference threshold, determining whether the current temperature is less than the operating temperature;

[0029] When the current temperature is lower than the operating temperature, the heating mode is turned on. When the heating mode is turned on, the thermal management system of the integrated storage and charging machine is configured to heat the component to be managed by heating the heat transfer medium in the pipeline.

[0030] Since the speed of heat transfer between the environment and the managed component is slower when the difference between the current temperature and the ambient temperature is smaller, turning on the heating mode is beneficial to increase the temperature of the managed component and make it reach the preset working temperature faster.

[0031] Optionally, after judging whether the ambient temperature is beneficial to the thermal management of the component to be managed according to the current temperature, the preset operating temperature and the ambient temperature, the method further includes:

[0032] In a case where the ambient temperature is unfavorable for the thermal management of the component to be managed, determining whether the current temperature is less than the preset operating temperature;

[0033] When the current temperature is lower than the preset operating temperature, the heating mode is turned on. When the heating mode is turned on, the thermal management system of the storage and charging machine is configured to heat the component to be managed by heating the heat transfer medium in the pipeline.

[0034] In the above method, the heating mode is directly turned on to increase the speed at which the component to be managed reaches a preset operating temperature, thereby reducing the damage to the component to be managed caused by high temperature.

[0035] Optionally, the integrated storage and charging machine further includes a cold storage device, and after judging whether the ambient temperature is beneficial to the thermal management of the component to be managed according to the current temperature, the preset working temperature and the ambient temperature, further includes:

[0036] In a case where the ambient temperature is unfavorable for the thermal management of the component to be managed, determining whether the current temperature is less than the preset operating temperature;

[0037] When the current temperature is greater than the preset operating temperature, the first cooling mode and / or the second cooling mode is selected to be turned on according to the current electricity price, wherein, when the first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of a refrigerant to achieve cooling of the component to be managed, and when the second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of the cold capacity of the cold storage device to achieve cooling of the component to be managed.

[0038] In the above method, since the current electricity price is referred to, it is beneficial to improve the accuracy of the selected mode.

[0039] Optionally, the selecting to start the first cooling mode and / or the second cooling mode according to the current electricity price includes:

[0040] When the current electricity price is less than the preset electricity price threshold, the first cooling mode is selected to be turned on, wherein when the first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by the refrigerant to achieve cooling of the component to be managed;

[0041] When the current electricity price is not less than the electricity price threshold, determining whether the cold storage device has cold capacity;

[0042] When there is cold energy in the cold storage device, the second refrigeration mode is selected to be turned on, or the first refrigeration mode and the second refrigeration mode are selected to be turned on, wherein when the second refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by the cold energy of the cold storage device to achieve refrigeration of the component to be managed.

[0043] Optionally, when there is cold energy in the cold storage device, selecting to start the second refrigeration mode, or selecting to start the first refrigeration mode and the second refrigeration mode, includes:

[0044] In the case where the cold storage device has cold capacity, determining the cold capacity required by the component to be managed and the heat generation of the component to be managed;

[0045] Determining the required cooling capacity according to the cooling capacity required by the component to be managed and the heat production;

[0046] The required cooling capacity is compared with the cooling capacity stored in the cooling storage device. If the cooling capacity stored in the cooling storage device is less than the required cooling capacity, the first cooling mode and the second cooling mode are selected to be turned on.

[0047] Optionally, the integrated storage and charging machine further includes a cold storage device, and the thermal management method further includes:

[0048] When the first absolute value is not less than the first difference threshold and the current temperature is greater than the preset operating temperature, the first refrigeration mode and the second refrigeration mode are turned on, wherein, when the first refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of refrigerant to achieve refrigeration of the component to be managed, and when the second refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of the cold capacity of the cold storage device to achieve refrigeration of the component to be managed.

[0049] Optionally, the thermal management method further includes:

[0050] When the first absolute value is not less than the first difference threshold and the current temperature is less than the preset operating temperature, the heating mode is turned on, wherein when the heating mode is turned on, the thermal management system of the storage and charging machine is configured to heat the component to be managed by heating the heat transfer medium in the pipeline.

[0051] In a second aspect, an embodiment of the present application provides a thermal management device for a storage-charging integrated machine, comprising:

[0052] A current temperature acquisition module, used to acquire the current temperature of the component to be managed, where the component to be managed is an energy storage or transmission component of the storage-charging machine;

[0053] A first absolute value calculation module, used to calculate the absolute value of the difference between the current temperature and the preset operating temperature of the component to be managed, to obtain a first absolute value;

[0054] a module for judging whether the ambient temperature is favorable, for judging whether the ambient temperature is favorable for the thermal management of the component to be managed according to the current temperature, the preset working temperature and the ambient temperature when the first absolute value is less than a preset first difference threshold, wherein the ambient temperature is the temperature of the environment where the component to be managed is located;

[0055] A second absolute value calculation module, configured to calculate an absolute value of a difference between the current temperature and the ambient temperature to obtain a second absolute value when the ambient temperature is favorable for thermal management of the component to be managed;

[0056] The self-circulation mode activation module is used to activate the self-circulation mode when the second absolute value is greater than a preset second difference threshold value, wherein when the self-circulation mode is activated, the thermal management system of the storage and charging machine is configured to transfer heat between the environment where the component to be managed is located and the heat transfer medium circulating in the pipeline to achieve thermal management of the component to be managed connected to the pipeline.

[0057] In a third aspect, an embodiment of the present application 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 a method as described in any one of the first aspects when executing the computer program.

[0058] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the first aspects is implemented.

[0059] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product is run on an electronic device, the electronic device executes any one of the methods described in the first aspect.

[0060] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art.

[0062] Figure 1 It is a structural schematic diagram of a storage-charging integrated machine provided in one embodiment of the present application;

[0063] Figure 2 It is a flow chart of a thermal management method of a storage-charging integrated machine provided in one embodiment of the present application;

[0064] Figure 3 It is a structural schematic diagram of another integrated storage and charging machine provided in one embodiment of the present application;

[0065] Figure 4 It is a structural schematic diagram of a thermal management device for a storage-charging integrated machine provided in one embodiment of the present application;

[0066] Figure 5 It is a structural schematic diagram of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0067] 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.

[0068] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0069] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0070] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0071] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0072] With the development of technology, devices with different functions emerge in an endless stream, and devices usually work better within their corresponding operating temperature range.

[0073] Considering that the temperature of the device during operation may be higher than or lower than the preset operating temperature, in order to reduce the damage to the device caused by inappropriate temperature, the device is usually heated or cooled.

[0074] For example, in Figure 1The storage and charging integrated machine shown includes a charging gun, DCDC, battery + ACDC, compressor, plate heat exchanger, and electric heater. When the charging gun uses the battery to charge the vehicle, or uses the power grid to charge the battery, the temperature of the battery will rise; and when charging the battery, the temperature of the battery will also rise. At this time, the refrigerant needs to be compressed by a compressor, and the compressed refrigerant exchanges heat with the coolant in the pipeline through the plate heat exchanger. The temperature of the coolant drops after the heat exchange, and the temperature of the battery can be lowered by the coolant after the temperature drops. When it is detected that the temperature of the battery is low, it is necessary to heat the coolant with an electric heater, and then use the heated coolant to increase the temperature of the battery. By performing thermal management such as heating or cooling the battery, the temperature of the battery is kept at a suitable temperature to reduce the probability of a safety accident of the battery and increase the life of the battery.

[0075] When performing thermal management on a battery, if the battery is directly cooled when its temperature is higher than the preset operating temperature (or vice versa), that is, if the effect of heat transfer between the environment and the battery is not considered, it is likely to result in a waste of resources and high costs.

[0076] In order to reduce the cost of thermal management, an embodiment of the present application provides a thermal management method for a storage-charging machine. In the thermal management method, when the difference between the current temperature of the component to be managed in the storage-charging machine and its preset working temperature is small, heating or cooling treatment will not be performed directly, but it will continue to judge whether the ambient temperature of the environment where the component to be managed is located is beneficial to the thermal management of the component to be managed. If it is beneficial and the difference between the ambient temperature and the current temperature is large, the self-circulation mode is turned on to utilize the heat transfer from the environment to the equipment to achieve thermal management of the component to be managed, thereby saving the cost generated by direct heating or cooling treatment.

[0077] The thermal management method provided in the embodiments of the present application is described below with reference to the accompanying drawings.

[0078] Figure 2 A flow chart of a thermal management method for an integrated storage and charging machine provided in an embodiment of the present application is shown, and the thermal management method is applied to a thermal management system of the integrated storage and charging machine, and the integrated storage and charging machine includes one or more components to be managed, and these components to be managed are connected by pipelines, and heat transfer media are stored in the pipelines, and these heat transfer media can achieve heat transfer with the components to be managed, wherein the heat transfer medium is a liquid for transferring heat, which can be a compound or a mixture, for example, the heat transfer medium can be water, a mixture of water and ethylene glycol, or a mixture of water and methylene glycol, which is not limited here.

[0079] The thermal management method of the storage-charging integrated machine provided in the embodiment of the present application is described in detail as follows:

[0080] S21, obtaining the current temperature of the component to be managed, where the component to be managed is an energy storage or transmission component of the storage-charging machine.

[0081] The component to be managed here can be any component in the storage-charging machine that needs thermal management. For example, when the storage-charging machine includes a battery, an AC-DC converter, a charging gun, and a DC-DC converter, the component to be managed can be at least one of the battery, the AC-DC converter, the charging gun, and the DC-DC converter.

[0082] In an embodiment of the present application, the current temperature of the component to be managed can be obtained by directly collecting the temperature of the component to be managed through a temperature sensor, or the current temperature of the component to be managed can be estimated by collecting the temperature of an object that affects the temperature of the component to be managed. When estimating the current temperature of the component to be managed by collecting the temperature of an object that affects the temperature of the component to be managed, the temperature of the heat transfer medium of the pipeline of the storage and charging machine can be selected to estimate the current temperature of the component to be managed. Specifically: obtain the temperature of the heat transfer medium entering and exiting the component to be managed, and estimate the current temperature of the component to be managed based on the temperature of the heat transfer medium entering and exiting the component to be managed.

[0083] Since heat transfer occurs between the heat transfer medium and the component to be managed when the heat transfer medium passes through the component to be managed, by obtaining the temperature of the heat transfer medium before and after passing through the component to be managed and obtaining the temperature of the heat transfer medium after passing through the component to be managed, the temperature change before and after the heat transfer medium passes through the component to be managed can be calculated to obtain the temperature difference, which can be an increased temperature or a decreased temperature. The heat change of the heat transfer medium is calculated based on the temperature difference of the heat transfer medium, the mass of the heat transfer medium and the mass of the heat transfer medium. Since the heat change of the heat transfer medium is caused by passing through the thermal management component, the heat change of the heat transfer medium can be used as the heat change of the battery, and then the temperature difference of the component to be managed is calculated based on the heat change of the battery, the mass of the component to be managed and the specific heat capacity of the component to be managed, and the current temperature of the component to be managed is calculated based on the temperature difference and the original temperature of the component to be managed.

[0084] Optionally, when thermal management is required for at least two components of the storage and charging machine, the time for obtaining the current temperature of each component can be set to be the same, or the time for obtaining the current temperature of each component can be set to be different, which is not limited here.

[0085] S22, calculating the absolute value of the difference between the current temperature and the preset operating temperature of the component to be managed to obtain a first absolute value.

[0086] The preset operating temperature is a preset temperature at which the component to be managed operates normally.

[0087] In the embodiment of the present application, the preset operating temperatures of different components to be managed belonging to the same storage-charging machine may be the same or different.

[0088] Optionally, the preset operating temperature may be a specific temperature value or a temperature range, that is, a temperature interval including a maximum temperature value and a minimum temperature value.

[0089] Specifically, when the preset working temperature is a specific temperature value, the current temperature is subtracted from the specific temperature value, and the absolute value of the difference is the above-mentioned first absolute value; when the preset working temperature is a temperature range, the current temperature is subtracted from one of the temperature values ​​in the temperature range, and the absolute value of the difference is the above-mentioned first absolute value.

[0090] Optionally, when the preset operating temperature is a temperature range, the minimum absolute value calculated between the current temperature and the temperature values ​​in the temperature range is used as the first absolute value.

[0091] S23, when the above-mentioned first absolute value is less than the preset first difference threshold, judge whether the above-mentioned ambient temperature is beneficial to the thermal management of the above-mentioned component to be managed based on the above-mentioned current temperature, the above-mentioned preset working temperature and the ambient temperature, and the above-mentioned ambient temperature is the temperature of the environment where the above-mentioned component to be managed is located.

[0092] The first difference threshold is a value greater than 0, and the value of the first difference threshold can be set according to actual needs, such as setting the first difference threshold to 5° C. Optionally, different first difference thresholds can be set for different components to be managed.

[0093] Specifically, when the current temperature matches the preset operating temperature, the above-mentioned first absolute value is equal to 0, which indicates that the current temperature of the component to be managed is appropriate. At this time, it is not necessary to judge whether the ambient temperature is beneficial to the thermal management of the component to be managed. For example, when the first absolute value is greater than 0, it is necessary to judge whether the ambient temperature is beneficial to the thermal management of the component to be managed.

[0094] In the embodiment of the present application, the ambient temperature can be obtained by detecting the environment where the component to be managed is located through a temperature sensor. When the temperature of the component to be managed needs to be increased and the ambient temperature is higher than the current temperature, it indicates that the ambient temperature is beneficial to the thermal management of the component to be managed; similarly, when the temperature of the component to be managed needs to be reduced and the ambient temperature is lower than the current temperature, it indicates that the ambient temperature is beneficial to the thermal management of the component to be managed.

[0095] For example, the ambient temperature can be judged to be beneficial for thermal management of the component to be managed by:

[0096] A1. Determine whether the current temperature is lower than the preset working temperature and lower than the ambient temperature.

[0097] Specifically, you can first determine whether the current temperature is lower than the preset working temperature. If the current temperature is lower than the preset working temperature, then determine whether the current temperature is lower than the ambient temperature. You can also first determine whether the current temperature is lower than the ambient temperature. If the current temperature is lower than the ambient temperature, then determine whether the current temperature is lower than the preset working temperature.

[0098] Of course, whether the current temperature is lower than the preset working temperature may also be determined by determining whether the preset working temperature is higher than the current temperature, which will not be elaborated here.

[0099] A2. When the current temperature is lower than the preset operating temperature and lower than the ambient temperature, it is determined that the ambient temperature is beneficial to the thermal management of the component to be managed. Alternatively, when the current temperature is higher than the preset operating temperature and higher than the ambient temperature, it is determined that the ambient temperature is beneficial to the thermal management of the component to be managed. Otherwise, it is determined that the ambient temperature is not beneficial to the thermal management of the component to be managed.

[0100] Specifically, when the current temperature is lower than the preset operating temperature but higher than the ambient temperature, it is determined that the ambient temperature is unfavorable for thermal management; similarly, when the current temperature is higher than the preset operating temperature but lower than the ambient temperature, it is determined that the ambient temperature is unfavorable for thermal management.

[0101] S24, when the ambient temperature is favorable for the thermal management of the component to be managed, calculating the absolute value of the difference between the current temperature and the ambient temperature to obtain a second absolute value.

[0102] Specifically, the current temperature is subtracted from the ambient temperature, and the absolute value of the difference obtained is the second absolute value mentioned above.

[0103] S25, when the above-mentioned second absolute value is greater than the preset second difference threshold, the self-circulation mode is turned on, wherein, when the above-mentioned self-circulation mode is turned on, the thermal management system of the storage and charging machine is configured to transfer heat between the environment where the above-mentioned component to be managed is located and the heat transfer medium circulating in the pipeline to achieve thermal management of the above-mentioned component to be managed connected to the above-mentioned pipeline.

[0104] The second difference threshold may be set according to actual conditions, and may be the same as or different from the first difference threshold, which is not limited here.

[0105] The heat transfer medium is also called antifreeze or coolant. In the embodiment of the present application, the heat transfer medium can be water, or a combination of water and ethylene glycol (or water and propylene glycol), or other compounds or mixtures, which are not limited here.

[0106] In the embodiment of the present application, each component to be managed of the storage and charging machine is connected by a pipeline, and a heat transfer medium is stored in the pipeline. When the thermal management system of the storage and charging machine turns on the self-circulation mode, the heat transfer medium in the pipeline will flow, and its temperature is mainly affected by the ambient temperature. For example, when the temperature of the heat transfer medium is lower than the ambient temperature, heat will be transferred from the environment to the heat transfer medium, so that the temperature of the heat transfer medium is increased, and when the temperature of the heat transfer medium is higher than the ambient temperature, heat will be transferred from the heat transfer medium to the environment, so that the temperature of the heat transfer medium is reduced. Optionally, after turning on the self-circulation mode, the current temperature of the component to be managed can continue to be obtained. If the current temperature matches the above-mentioned preset operating temperature, such as the current temperature is equal to the preset operating temperature, or the current temperature is within the temperature range corresponding to the preset operating temperature, the self-circulation mode can be ended to save corresponding resources.

[0107] In the embodiment of the present application, when the absolute value of the difference between the current temperature of the component to be managed and the preset working temperature is less than the preset first difference threshold, it is determined whether the ambient temperature is beneficial to the thermal management of the component to be managed based on the current temperature, the preset working temperature and the ambient temperature. If it is beneficial, it is determined whether the absolute value of the difference between the current temperature and the ambient temperature is greater than the preset second difference threshold. If it is greater than the second difference threshold, the self-circulation mode is turned on. Since, when the absolute value of the difference between the current temperature and the preset working temperature is greater than the first difference threshold, the component to be managed is not heated or cooled directly by heating or cooling the heat transfer medium in the pipeline, but the self-circulation mode is turned on after certain conditions are met, and since the self-circulation mode realizes thermal management of the above-mentioned component to be managed connected to the pipeline by heat transfer between the environment where the component to be managed is located and the heat transfer medium circulating in the pipeline, that is, when performing thermal management through the self-circulation mode, no additional heat or cold is generated, thereby saving the cost caused by generating additional heat or cold. In addition, the self-circulation mode is turned on only when the absolute value of the difference between the current temperature and the preset working temperature is less than the first difference threshold, and the absolute value of the difference between the current temperature and the ambient temperature is greater than the second difference threshold, and the absolute value of the difference between the current temperature and the preset working temperature is less than the first difference threshold, indicating that the temperature of the component to be managed does not need to be increased or decreased much, and the absolute value of the difference between the current temperature and the ambient temperature is greater than the second difference threshold, indicating that the temperature difference between the component to be managed and the environment is large and the heat transfer rate is faster when the temperature difference is large. Therefore, the above-mentioned method of realizing thermal management of the component to be managed by turning on the self-circulation mode is beneficial to realizing thermal management of the corresponding component to be managed and can also reduce the cost of thermal management.

[0108] In some embodiments, if the current temperature matches the preset working temperature, the thermal management system of the storage and charging machine may enter a standby mode, in which it may be selected to only power the main control board to save the resources of the thermal management system. The main control board maintains communication with sensors (such as temperature sensors) of the thermal management system, and is used to receive sensor data sent by the sensors, for example, to receive the current temperature of the component to be managed sent by the temperature sensor, analyze whether the current temperature matches the preset working temperature, etc. When the current temperature of the component to be managed is greater than or less than the preset working temperature, it is selected whether to turn on the self-circulation mode or the heating mode or other modes.

[0109] In some embodiments, the above-mentioned storage and charging machine also includes a circulation pump connected to the above-mentioned component to be managed through the above-mentioned pipeline. After the circulation pump is turned on, the heat transfer medium in the pipeline will flow, and the flow speed of the heat transfer medium is related to the rotation speed of the circulation pump. For example, the greater the rotation speed of the circulation pump, the faster the flow speed of the heat transfer medium is generally, and vice versa, the flow speed of the heat transfer medium is generally slower. After the heat transfer medium flows, it can transfer heat to the thermal management component connected to the pipeline, thereby realizing thermal management of the thermal management component. That is, in the above-mentioned S25, starting the self-circulation mode includes:

[0110] B1. Determine the rotation speed of the circulation pump according to the current temperature and the preset working temperature.

[0111] Specifically, the corresponding relationship between the rotation speed of the circulation pump and the first absolute value can be preset, such as setting the first absolute value to be larger, and the corresponding rotation speed to be larger. When the absolute value of the difference between the current temperature and the preset working temperature is calculated, that is, the first absolute value is obtained, the corresponding rotation speed can be determined by the first absolute value and the corresponding relationship between the preset rotation speed and the first absolute value.

[0112] Optionally, when the number of circulating pumps is greater than 1, the rotation speeds of all circulating pumps may be set to be the same, or the rotation speeds of all circulating pumps may be set to be unequal, which is not limited here. For example, a reference rotation speed may be determined based on the first absolute value, and then the reference rotation speed may be fine-tuned in combination with the position of the circulating pump to obtain the rotation speed corresponding to each circulating pump. Since the forces received by the heat transfer medium at different positions may be different, therefore, determining the corresponding rotation speed in combination with the position of the circulating pump is conducive to improving the accuracy of the determined rotation speed.

[0113] B2. Start the circulation pump according to the above determined speed to start the self-circulation mode.

[0114] Considering that the turned-on circulation pump can drive the heat transfer medium in the pipeline to flow, and the flow speed of the heat transfer medium is related to the rotation speed of the circulation pump, and the flow speed of the heat transfer medium will affect the thermal management effect of the component to be managed, therefore, in the embodiment of the present application, the rotation speed is set according to the current temperature of the component to be managed and the preset operating temperature, which is conducive to improving the accuracy of the obtained rotation speed.

[0115] In some embodiments, after the second absolute value is obtained in S24, the method further includes:

[0116] C1. When the second absolute value is not greater than the second difference threshold, determine whether the current temperature is less than the preset operating temperature.

[0117] C2. When the current temperature is lower than the preset operating temperature, the heating mode is turned on. When the heating mode is turned on, the thermal management system of the storage and charging machine is configured to heat the components to be managed by heating the heat transfer medium in the pipeline.

[0118] Specifically, when the current temperature is lower than the preset working temperature and lower than the ambient temperature, if the second absolute value is not greater than the second difference threshold (i.e., the difference between the current temperature and the ambient temperature is small), and the difference between the current temperature and the ambient temperature is small, the speed of heat transfer between the environment and the component to be managed is slower. Therefore, in order to increase the temperature of the component to be managed and make its temperature reach the preset working temperature faster, the heating mode is turned on.

[0119] In the embodiment of the present application, the cooling heat can be heated by heating the heat transfer medium through a heater (such as an electric heater), or by heating the refrigerant and then exchanging heat between the refrigerant and the heat transfer medium. For example, the refrigerant can be compressed and heated by the compressor of the thermal management system, and the heated refrigerant and the heat transfer medium can exchange heat through a heat exchanger (such as a plate heat exchanger) to obtain a heated heat transfer medium, and the heated heat transfer medium can then exchange heat with the component to be managed. Optionally, after the heat transfer medium and the refrigerant have exchanged heat, the heat transfer medium can continue to be heated by the electric heater, and then the component to be managed can be heated by the heat transfer medium that has continued to be heated.

[0120] Optionally, after turning on the heating mode, the current temperature of the component to be managed can continue to be obtained. If the current temperature matches the above-mentioned preset operating temperature, such as the current temperature is equal to the preset operating temperature, or the current temperature is within the temperature range corresponding to the preset operating temperature, the heating mode can be ended to save corresponding resources.

[0121] In some embodiments, the above-mentioned integrated storage and charging machine further includes a cold storage device. When the cold storage device is in the form of a tank, the cold storage device can also be called a cold storage tank. When the integrated storage and charging machine further includes a cold storage device and requires refrigeration, the cold storage device can be considered for refrigeration, that is, after the second absolute value is obtained in the above S24, it also includes:

[0122] D1. When the second absolute value is not greater than the second difference threshold, determine whether the current temperature is less than the preset operating temperature.

[0123] D2. When the current temperature is greater than the preset working temperature, the first cooling mode or the second cooling mode is selected to be turned on according to the current electricity price, wherein, when the first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of refrigerant to achieve cooling of the components to be managed, and when the second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of the cold capacity of the cold storage device to achieve cooling of the components to be managed.

[0124] Among them, the current electricity price refers to the current electricity price in the area where the thermal management system is located.

[0125] In the embodiment of the present application, the cold storage device refers to a device that uses a cold storage medium to store cold energy. The cold storage medium can be water, ice, ethylene glycol, or methylene glycol, or a mixture of ethylene glycol (or methylene glycol) and water, etc., which is not limited here. Optionally, when the cold storage medium is a mixture of ethylene glycol (or methylene glycol) and water, the ratio of ethylene glycol (or methylene glycol) to water can be adjusted according to the scenario in which the thermal management system is located.

[0126] For example, considering that ethylene glycol has good anti-evaporation and anti-cooling effects, if the temperature of the scene where the thermal management system is located is relatively low, such as reaching minus ten degrees or -30°, the ratio of ethylene glycol to water in the cold storage medium can be set to a ratio greater than 1, such as: 7:3, that is, 70% ethylene glycol + 30% water, so that the heat transfer medium remains liquid at lower temperatures to prevent freezing.

[0127] For example, if the temperature of the scene where the storage and charging device is located is moderate (i.e., neither too cold nor too hot), the ratio of ethylene glycol and water in the cold storage medium can be set to 1, that is, 50% ethylene glycol + 50% water, so that the heat transfer medium can provide better antifreeze performance under moderate low temperature conditions, but at the same time maintain good thermal conductivity.

[0128] For example, if the temperature of the scene where the storage and charging machine is located is high, such as in summer, the temperature can reach 40°, then the ratio of ethylene glycol and water in the cold storage medium can be set to a ratio less than 1, such as 30% ethylene glycol + 70% water, to prevent water evaporation and avoid boiling of the heat transfer medium caused by excessively high temperatures.

[0129] In an embodiment of the present application, when the current electricity price is less than a preset electricity price threshold, the first cooling mode of the thermal management system can be selected to be turned on, and when the current electricity price is not less than the above-mentioned electricity price threshold, the second cooling mode of the thermal management system can be selected to be turned on. Among them, the above-mentioned electricity price threshold can be determined according to the electricity price of the area where the thermal management system is located. At this time, the electricity price threshold is equivalent to a fixed value. Of course, considering that the cold capacity of the cold storage device is stored in advance when the electricity price is lower, the above-mentioned electricity price threshold is determined according to the electricity price when the cold storage device stores cold. At this time, after the current electricity price is greater than the electricity price when the cold storage device stores cold capacity, the second cooling mode of the thermal management system can be selected to be turned on, and when the current electricity price is not greater than the electricity price when the cold storage device stores cold capacity, the first cooling mode of the thermal management system can be selected to be turned on. Since the corresponding electricity prices of the cold storage device are not necessarily the same during different cold storage operations, the voltage threshold is equivalent to a dynamic value.

[0130] In an embodiment of the present application, since the current temperature is greater than the preset operating temperature, and the absolute value of the difference between the current temperature and the preset operating temperature is less than the preset first difference threshold, the ambient temperature is favorable for the thermal management of the component to be managed, and the absolute value of the difference between the current temperature and the ambient temperature is not greater than the second difference threshold, it indicates that the difference between the current temperature and the preset operating temperature is small, and the component to be managed can also transfer heat to the environment, which means that the urgency of cooling the component to be managed is low. At this time, a cooling mode is selected according to the current electricity price to cool the component to be managed, which can not only achieve the cooling of the component to be managed, but also effectively control the cost of cooling.

[0131] Optionally, after starting the first cooling mode or the second cooling mode, the current temperature of the component to be managed can continue to be obtained. If the current temperature matches the above-mentioned preset operating temperature, such as the current temperature is equal to the preset operating temperature, or the current temperature is within the temperature range corresponding to the preset operating temperature, the first cooling mode or the second cooling mode can be ended to save corresponding resources.

[0132] In some embodiments, in the above S23, after judging whether the above ambient temperature is beneficial to the thermal management of the above component to be managed according to the above current temperature, the above preset working temperature and the ambient temperature, the following further comprises:

[0133] E1. When the ambient temperature is unfavorable for the thermal management of the component to be managed, determine whether the current temperature is less than the preset operating temperature.

[0134] E2. When the current temperature is lower than the preset operating temperature, the heating mode is turned on. When the heating mode is turned on, the thermal management system of the storage and charging machine is configured to heat the components to be managed by heating the heat transfer medium in the pipeline.

[0135] Specifically, when the ambient temperature is unfavorable for the thermal management of the component to be managed and the current temperature is lower than the preset working temperature, it indicates that the current temperature cannot be raised with the help of the ambient temperature. At this time, the heating mode is directly turned on until there is no need to continue thermally managing the component to be managed, so as to increase the speed at which the component to be managed reaches the preset working temperature, thereby reducing the damage caused by high temperature to the component to be managed.

[0136] In some embodiments, the above-mentioned storage-charging integrated machine further includes a cold storage device. In the above-mentioned S23, after judging whether the above-mentioned ambient temperature is beneficial to the thermal management of the above-mentioned component to be managed according to the above-mentioned current temperature, the above-mentioned preset working temperature and the ambient temperature, it also includes:

[0137] F1. When the ambient temperature is unfavorable for the thermal management of the component to be managed, determine whether the current temperature is lower than the preset operating temperature.

[0138] F2. When the current temperature is greater than the preset operating temperature, the first cooling mode and / or the second cooling mode is selected to be turned on according to the current electricity price, wherein, when the first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by using the refrigerant to achieve cooling of the components to be managed, and when the second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by using the cold capacity of the cold storage device to achieve cooling of the components to be managed.

[0139] Specifically, when the current temperature is greater than the preset operating temperature and the ambient temperature is unfavorable to the thermal management of the component to be managed, it indicates that the component to be managed cannot transfer its heat to the environment. At this time, it is necessary to rely on the cooling capacity of the thermal management system to cool down the component to be managed. In the embodiment of the present application, when selecting a mode, since the current electricity price is referenced, it is helpful to improve the accuracy of the selected mode.

[0140] In some embodiments, the above-mentioned selecting to start the first cooling mode and / or the second cooling mode according to the current electricity price includes:

[0141] G1. When the current electricity price is less than the preset electricity price threshold, the first cooling mode is selected to be turned on. When the above-mentioned first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the above-mentioned pipeline through the refrigerant of the above-mentioned thermal management system to realize the cooling of the above-mentioned components to be managed.

[0142] Among them, the electricity price threshold can be determined based on the average electricity price in the area where the thermal management system is located, such as the average electricity price in the first quarter of the area where the thermal management system is located. Of course, it can also be determined based on the electricity price corresponding to the current amount of cold stored in the cold storage device, which will not be repeated here.

[0143] G2. When the current electricity price is not less than the above electricity price threshold, determine whether the above cold storage device has cooling capacity.

[0144] Specifically, the temperature at the outlet of the cold storage device can be used to determine whether the cold storage device still has cold capacity. For example, if the temperature at the outlet of the cold storage device is lower than a preset cold release temperature threshold, it indicates that cold capacity is still stored in the cold storage device. The cold release temperature threshold is a preset temperature value, which can be set according to actual conditions and is not limited here.

[0145] G3. When there is cold energy in the cold storage device, the second cooling mode is selected to be turned on, or the first cooling mode and the second cooling mode are selected to be turned on, wherein when the second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by the cold energy of the cold storage device to realize the cooling of the components to be managed.

[0146] Of course, when there is cold capacity in the cold storage device, the first cooling mode is also turned on.

[0147] In an embodiment of the present application, when there is cold capacity in the cold storage device and the current electricity price is high, considering that the cold storage device usually stores cold capacity when the electricity price is low, it is possible to choose to turn on the second refrigeration mode, or to turn on the first refrigeration mode and the second refrigeration mode at the same time to save costs and increase the refrigeration speed.

[0148] In some embodiments, the above G3 includes:

[0149] G31. When there is cold capacity in the cold storage device, determine the cold capacity required by the component to be managed and the heat generated by the component to be managed.

[0150] The cooling capacity required by the component to be managed refers to the cooling capacity required for the component to be managed to drop from the current temperature to the preset working temperature. Optionally, when the preset working temperature is a temperature range, the cooling capacity required by the component to be managed refers to the cooling capacity required for the component to be managed to drop from the current temperature to the maximum temperature value of the temperature range.

[0151] The cooling capacity required by the component to be managed can be calculated in the following manner: the temperature difference between the current temperature and the preset working temperature is calculated, and the cooling capacity required by the component to be managed is calculated based on the temperature difference, the mass of the component to be managed, and the specific heat capacity of the component to be managed.

[0152] The heat generation of the component to be managed can be calculated in the following way: when the component to be managed is in a working state, the heat generation of the component to be managed can be set to 0, otherwise, the corresponding heat generation is calculated according to the working state of the component to be managed. For example, when the component to be managed is a battery, if the battery is in a charging state or a discharging state, it can be determined according to the corresponding relationship between the charging rate (or discharging rate) and the heat generation.

[0153] G32. Determine the required cooling capacity based on the cooling capacity required by the above-mentioned components to be managed and the above-mentioned heat production.

[0154] Specifically, the sum of the cooling capacity and the heat generated by the component to be managed is used as the cooling capacity, or the sum obtained plus a preset value is used as the cooling capacity, which is not limited here.

[0155] G33. Compare the required cooling capacity with the cooling capacity stored in the cooling storage device. If the cooling capacity stored in the cooling storage device is less than the required cooling capacity, select to start the first cooling mode and the second cooling mode.

[0156] Specifically, when the cold amount stored in the cold storage device is less than the required cooling amount, it indicates that relying solely on the cold amount stored in the cold storage device cannot reduce the temperature of the component to be managed to the preset working temperature. Therefore, choosing to turn on the first cooling mode and the second cooling mode is conducive to ensuring that the temperature of the component to be managed drops to the preset working temperature.

[0157] Optionally, the first refrigeration mode may be turned on after the cold stored in the cold storage device is about to be used up or has been used up, or may be turned on simultaneously with the second refrigeration mode, which is not limited here.

[0158] In some embodiments, the integrated storage and charging machine further includes a cold storage device, and the thermal management method of the integrated storage and charging machine further includes:

[0159] When the above-mentioned first absolute value is not less than the above-mentioned first difference threshold and the above-mentioned current temperature is greater than the above-mentioned preset working temperature, the first refrigeration mode and the second refrigeration mode are turned on, wherein, when the above-mentioned first refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the above-mentioned pipeline by the refrigerant to achieve refrigeration of the above-mentioned component to be managed, and when the above-mentioned second refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the above-mentioned pipeline by the cold capacity of the above-mentioned cold storage device to achieve refrigeration of the above-mentioned component to be managed.

[0160] In an embodiment of the present application, when the first absolute value is not less than the first difference threshold and the current temperature is greater than the preset operating temperature, it indicates that the current temperature is much higher than the preset operating temperature. At this time, turning on the first cooling mode and the second cooling mode is beneficial to increasing the speed at which the temperature of the managed component is reduced.

[0161] In some embodiments, the thermal management method of the above-mentioned storage-charging integrated machine further includes:

[0162] When the above-mentioned first absolute value is not less than the above-mentioned first difference threshold and the above-mentioned current temperature is less than the above-mentioned preset working temperature, the heating mode is turned on, wherein, when the above-mentioned heating mode is turned on, the storage and charging machine heats the above-mentioned component to be managed by heating the heat transfer medium in the above-mentioned pipeline.

[0163] In an embodiment of the present application, when the first absolute value is not less than the first difference threshold and the current temperature is less than the preset operating temperature, it indicates that the current temperature is far lower than the preset operating temperature. At this time, turning on the heating mode is beneficial to increasing the speed at which the temperature of the component to be managed is increased.

[0164] In order to more clearly describe the thermal management method of the storage and charging integrated machine provided in the embodiment of the present application, Figure 3 Give a description.

[0165] exist Figure 3 In the charging pile, the storage and charging machine is a charging pile, which includes a charging gun, DCDC, battery + ACDC, a circulating pump, a compressor, a plate heat exchanger, an electric heater, a cold storage tank, a three-way valve and a four-way valve.

[0166] Figure 3 The charging gun, DCDC, battery + ACDC (hereinafter referred to as battery) in the application can all be used as the components to be managed in this application. Assume that the components to be managed are Figure 3 Battery + ACDC in the charging pile, the main control board of the thermal management system:

[0167] 1) Get the current temperature of the battery.

[0168] 2) Calculate the absolute value of the difference between the current temperature and the corresponding preset operating temperature to obtain a first absolute value.

[0169] 3) When the first absolute value is not less than the first difference threshold and the current temperature is greater than the preset working temperature, the first cooling mode and the second cooling mode are turned on.

[0170] 4) When the first absolute value is not less than the first difference threshold and the current temperature is less than the preset working temperature, the heating mode is turned on, wherein when the heating mode is turned on, the battery is heated by the heat transfer medium in the heating pipe.

[0171] 5) When the first absolute value is less than a preset first difference threshold, determine whether the ambient temperature is beneficial to the thermal management of the battery according to the current temperature, the preset operating temperature and the ambient temperature. If so, execute 6) and if not, execute 9).

[0172] 6) When the ambient temperature is favorable for thermal management of the battery, the absolute value of the difference between the current temperature and the ambient temperature is calculated to obtain a second absolute value.

[0173] 7) When the second absolute value is greater than the preset second difference threshold, the self-circulation mode is turned on. Figure 3 The two circulation pumps in the machine are used to realize the self-circulation mode.

[0174] 8) When the second absolute value is not greater than the second difference threshold, determine whether the current temperature is less than the working temperature. If the current temperature is less than the working temperature, turn on the heating mode. If the current temperature is greater than the preset working temperature, choose to turn on the first cooling mode or the second cooling mode according to the current electricity price. For example, when the current electricity price is low, choose to turn on the first cooling mode, otherwise, choose to turn on the second cooling mode.

[0175] 9) When the ambient temperature is unfavorable for the thermal management of the battery, if the current temperature is further less than the preset working temperature, the heating mode of the thermal management system is turned on. If the current temperature is further greater than the preset working temperature, the first cooling mode and / or the second cooling mode is selected to be turned on according to the current electricity price. For example, when the current electricity price is less than the preset electricity price threshold, the first cooling mode is selected to be turned on. When the current electricity price is not less than the electricity price threshold, it is determined whether there is cold capacity in the cold storage device. If there is cold capacity in the cold storage device, the second cooling mode is selected to be turned on. Alternatively, the first cooling mode and the second cooling mode are selected to be turned on. Optionally, if there is cold capacity in the cold storage device, the cold capacity required by the battery and the heat generated by the battery are determined. The required cooling capacity is determined based on the cold capacity required by the battery and the heat generated. The required cooling capacity is compared with the cold capacity stored in the cold storage device. If the cold capacity stored in the cold storage device is less than the required cooling capacity, the first cooling mode and the second cooling mode are selected to be turned on.

[0176] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0177] Corresponding to the thermal management method described in the above embodiment, Figure 4 A structural block diagram of a thermal management device for a storage-charging machine provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0178] Reference Figure 4 The thermal management device 4 of the storage-charging integrated machine includes: a current temperature acquisition module 41, a first absolute value calculation module 42, a favorable ambient temperature judgment module 43, a second absolute value calculation module 44, and a self-circulation mode activation module 45. Among them:

[0179] The current temperature acquisition module 41 is used to acquire the current temperature of the component to be managed, where the component to be managed is a component belonging to the thermal management system.

[0180] The first absolute value calculation module 42 is used to calculate the absolute value of the difference between the current temperature and the preset operating temperature of the component to be managed to obtain a first absolute value.

[0181] The module 43 for judging whether the ambient temperature is favorable is used to judge whether the ambient temperature is favorable for the thermal management of the component to be managed based on the current temperature, the preset working temperature and the ambient temperature when the first absolute value is less than the preset first difference threshold value. The ambient temperature is the temperature of the environment where the component to be managed is located.

[0182] The second absolute value calculation module 44 is used to calculate the absolute value of the difference between the current temperature and the ambient temperature to obtain a second absolute value when the ambient temperature is favorable for the thermal management of the component to be managed.

[0183] The self-circulation mode activation module 45 is used to activate the self-circulation mode when the above-mentioned second absolute value is greater than the preset second difference threshold value, wherein, when the above-mentioned self-circulation mode is activated, the thermal management system of the storage and charging machine is configured to transfer heat between the environment where the above-mentioned component to be managed is located and the heat transfer medium circulating in the pipeline to achieve thermal management of the above-mentioned component to be managed connected to the above-mentioned pipeline.

[0184] In the embodiment of the present application, when the absolute value of the difference between the current temperature of the component to be managed and the preset working temperature is less than the preset first difference threshold, it is determined whether the ambient temperature is beneficial to the thermal management of the component to be managed based on the current temperature, the preset working temperature and the ambient temperature. If it is beneficial, it is determined whether the absolute value of the difference between the current temperature and the ambient temperature is greater than the preset second difference threshold. If it is greater than the second difference threshold, the self-circulation mode is turned on. Since, when the absolute value of the difference between the current temperature and the preset working temperature is greater than the first difference threshold, the component to be managed is not heated or cooled directly by heating or cooling the heat transfer medium in the pipe, but the self-circulation mode is turned on after certain conditions are met, and since the self-circulation mode realizes the thermal management of the above-mentioned component to be managed connected to the pipe by heat transfer between the environment where the component to be managed is located and the heat transfer medium circulating in the pipe, that is, when performing thermal management through the self-circulation mode, no additional heat or cold is generated, thereby saving the cost caused by generating additional heat or cold. In addition, the self-circulation mode is turned on only when the absolute value of the difference between the current temperature and the preset working temperature is less than the first difference threshold, and the absolute value of the difference between the current temperature and the ambient temperature is greater than the second difference threshold, and the absolute value of the difference between the current temperature and the preset working temperature is less than the first difference threshold, indicating that the temperature of the component to be managed does not need to be increased or decreased much, and the absolute value of the difference between the current temperature and the ambient temperature is greater than the second difference threshold, indicating that the temperature difference between the component to be managed and the environment is large and the heat transfer rate is faster when the temperature difference is large. Therefore, the above-mentioned method of realizing thermal management of the component to be managed by turning on the self-circulation mode is beneficial to realizing thermal management of the corresponding component to be managed and can also reduce the cost of thermal management.

[0185] In some embodiments, when the ambient temperature is favorable judging module 43 judges whether the ambient temperature is favorable for the thermal management of the component to be managed according to the current temperature, the preset working temperature and the ambient temperature, it includes:

[0186] When the current temperature is lower than the preset operating temperature and the ambient temperature, it is determined that the ambient temperature is favorable for thermal management of the component to be managed; otherwise, it is determined that the ambient temperature is unfavorable for thermal management of the component to be managed.

[0187] In some embodiments, when the above-mentioned ambient temperature is favorable judging module 43 judges whether the above-mentioned ambient temperature is favorable for the thermal management of the above-mentioned component to be managed according to the above-mentioned current temperature, the above-mentioned preset working temperature and the ambient temperature, it includes:

[0188] When the current temperature is greater than the preset operating temperature and the ambient temperature, it is determined that the ambient temperature is beneficial to the thermal management of the component to be managed; otherwise, it is determined that the ambient temperature is detrimental to the thermal management of the component to be managed.

[0189] In some embodiments, the above-mentioned storage-charging integrated machine further includes a circulation pump connected to the above-mentioned component to be managed through the above-mentioned pipeline, and the above-mentioned self-circulation mode activation module 45, when activating the self-circulation mode, includes:

[0190] The rotation speed of the circulation pump is determined according to the current temperature and the preset working temperature; the circulation pump is started according to the determined rotation speed to start the self-circulation mode.

[0191] In some embodiments, the thermal management device 4 of the storage-charging integrated machine provided in the embodiment of the present application further includes:

[0192] The current temperature and working temperature comparison module is used to determine whether the current temperature is lower than the working temperature after the second absolute value is obtained and when the second absolute value is not greater than the second difference threshold.

[0193] The first activation module of the heating mode is used to activate the heating mode when the above-mentioned current temperature is lower than the above-mentioned working temperature. When the above-mentioned heating mode is activated, the thermal management system of the storage and charging machine is configured to heat the above-mentioned components to be managed by heating the heat transfer medium in the above-mentioned pipeline.

[0194] In some embodiments, the above-mentioned integrated storage and charging machine further includes a cold storage device, and the thermal management device 4 of the integrated storage and charging machine provided in the embodiment of the present application further includes:

[0195] The current temperature and working temperature comparison module is used to determine whether the current temperature is lower than the preset working temperature after the second absolute value is obtained and when the second absolute value is not higher than the second difference threshold.

[0196] The first cooling mode selection module is used to select to start the first cooling mode or the second cooling mode according to the current electricity price when the above-mentioned current temperature is greater than the above-mentioned preset working temperature, wherein, when the above-mentioned first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the above-mentioned pipeline by the refrigerant to achieve the cooling of the above-mentioned components to be managed, and when the above-mentioned second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the above-mentioned pipeline by the cold capacity of the above-mentioned cold storage device to achieve the cooling of the above-mentioned components to be managed.

[0197] In some embodiments, the above-mentioned selecting to start the first cooling mode or the second cooling mode according to the current electricity price includes:

[0198] When the current electricity price is less than the preset electricity price threshold, the first cooling mode is selected to be turned on;

[0199] When the current electricity price is not less than the preset electricity price threshold, the second cooling mode is selected to be turned on.

[0200] In some embodiments, the thermal management device 4 of the storage-charging integrated machine provided in the embodiment of the present application further includes:

[0201] The thermal management unfavorable judgment module is used to judge whether the above-mentioned ambient temperature is favorable for the thermal management of the above-mentioned component to be managed based on the above-mentioned current temperature, the above-mentioned preset working temperature and the ambient temperature. If the above-mentioned ambient temperature is unfavorable for the thermal management of the above-mentioned component to be managed, judge whether the above-mentioned current temperature is lower than the above-mentioned preset working temperature.

[0202] The second activation module of the heating mode is used to activate the heating mode when the current temperature is lower than the preset working temperature. When the heating mode is activated, the thermal management system of the storage and charging machine is configured to heat the components to be managed by heating the heat transfer medium in the pipeline.

[0203] In some embodiments, the above-mentioned integrated storage and charging machine further includes a cold storage device, and the thermal management device 4 of the integrated storage and charging machine provided in the embodiment of the present application further includes:

[0204] The thermal management unfavorable judgment module is used to judge whether the above-mentioned ambient temperature is favorable for the thermal management of the above-mentioned component to be managed based on the above-mentioned current temperature, the above-mentioned preset working temperature and the ambient temperature. If the above-mentioned ambient temperature is unfavorable for the thermal management of the above-mentioned component to be managed, judge whether the above-mentioned current temperature is lower than the above-mentioned preset working temperature.

[0205] The second refrigeration mode selection module is used to select to start the first refrigeration mode and / or the second refrigeration mode according to the current electricity price when the above-mentioned current temperature is greater than the above-mentioned preset working temperature, wherein, when the above-mentioned first refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the above-mentioned pipeline by the refrigerant to achieve refrigeration of the above-mentioned components to be managed, and when the above-mentioned second refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the above-mentioned pipeline by the cold capacity of the above-mentioned cold storage device to achieve refrigeration of the above-mentioned components to be managed.

[0206] In some embodiments, when the second cooling mode selection module selects to start the first cooling mode and / or the second cooling mode according to the current electricity price, it includes:

[0207] When the current electricity price is less than the preset electricity price threshold, the first cooling mode is selected to be turned on, wherein when the above-mentioned first cooling mode is turned on, the thermal management system of the storage and charging integrated machine is configured to cool the heat transfer medium in the above-mentioned pipeline by using a refrigerant to realize cooling of the above-mentioned components to be managed;

[0208] When the current electricity price is not less than the electricity price threshold, determining whether the cold storage device has cold capacity;

[0209] When there is cold energy in the cold storage device, the second cooling mode is selected to be turned on, or the first cooling mode and the second cooling mode are selected to be turned on, wherein when the second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by the cold energy of the cold storage device to realize cooling of the components to be managed.

[0210] In some embodiments, when the cold storage device has cold capacity, the second cooling mode is selected to be turned on, or the first cooling mode and the second cooling mode are selected to be turned on, including:

[0211] In the case where the cold storage device has cold capacity, determining the cold capacity required by the component to be managed and the heat generation of the component to be managed;

[0212] Determine the required cooling capacity based on the cooling capacity required by the above-mentioned components to be managed and the above-mentioned heat production;

[0213] The required cooling capacity is compared with the cooling capacity stored in the cooling storage device. If the cooling capacity stored in the cooling storage device is less than the required cooling capacity, the first cooling mode and the second cooling mode are selected to be turned on.

[0214] In some embodiments, the above-mentioned integrated storage and charging machine further includes a cold storage device, and the thermal management device 4 of the above-mentioned integrated storage and charging machine further includes:

[0215] The third selection module of the cooling mode is used to start the first cooling mode and the second cooling mode when the above-mentioned first absolute value is not less than the above-mentioned first difference threshold value and the above-mentioned current temperature is greater than the above-mentioned preset working temperature, wherein, when the above-mentioned first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to achieve cooling of the above-mentioned components to be managed by cooling the heat transfer medium in the above-mentioned pipeline by the refrigerant, and when the above-mentioned second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to achieve cooling of the above-mentioned components to be managed by cooling the heat transfer medium in the above-mentioned pipeline by the cold capacity of the above-mentioned cold storage device.

[0216] In some embodiments, the thermal management device 4 of the above-mentioned storage-charging machine further includes:

[0217] The third activation module of the heating mode is used to activate the heating mode when the above-mentioned first absolute value is not less than the above-mentioned first difference threshold value and the above-mentioned current temperature is less than the above-mentioned preset working temperature, wherein, when the above-mentioned heating mode is activated, the heating of the above-mentioned component to be managed is achieved by heating the heat transfer medium in the above-mentioned pipeline.

[0218] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0219] Figure 5 This is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Figure 5 As shown, the electronic device 5 of this embodiment includes: at least one processor 50 ( Figure 5 Only one processor is shown in the figure), a memory 51, and a computer program 52 stored in the memory 51 and executable on the at least one processor 50, wherein the processor 50 implements the steps in any of the above-mentioned method embodiments when executing the computer program 52.

[0220] The electronic device 5 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The electronic device may include, but is not limited to, a processor 50 and a memory 51. Those skilled in the art will appreciate that Figure 5 It is only an example of the electronic device 5 and does not constitute a limitation on the electronic device 5. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, it may also include input and output devices, network access devices, etc.

[0221] The processor 50 may be a central processing unit (CPU), or 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 any conventional processor, etc.

[0222] In some embodiments, the memory 51 may be an internal storage unit of the electronic device 5, such as a hard disk or memory of the electronic device 5. In other embodiments, the memory 51 may also be an external storage device of the electronic device 5, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 5. Further, the memory 51 may also include both an internal storage unit and an external storage device of the electronic device 5. The memory 51 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 51 may also be used to temporarily store data that has been output or is to be output.

[0223] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0224] An embodiment of the present application also provides a network device, which includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor implements the steps in any of the above-mentioned method embodiments when executing the computer program.

[0225] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0226] An embodiment of the present application provides a computer program product. When the computer program product runs on an electronic device, the electronic device can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0227] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / electronic device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0228] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0229] 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.

[0230] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or 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.

[0231] 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.

[0232] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A thermal management method for a storage-charging integrated machine, characterized in that: include: Acquire the current temperature of the component to be managed, where the component to be managed is a component for energy storage or transmission of the storage-charging machine; Calculating an absolute value of a difference between the current temperature and a preset operating temperature of the component to be managed to obtain a first absolute value; In the case where the first absolute value is less than a preset first difference threshold, judging whether the ambient temperature is beneficial to the thermal management of the component to be managed according to the current temperature, the preset operating temperature and the ambient temperature, the ambient temperature being the temperature of the environment where the component to be managed is located; When the ambient temperature is favorable for thermal management of the component to be managed, calculating an absolute value of a difference between the current temperature and the ambient temperature to obtain a second absolute value; When the second absolute value is greater than a preset second difference threshold, the self-circulation mode is turned on, wherein when the self-circulation mode is turned on, the thermal management system of the storage-charging machine is configured to perform heat transfer between the environment where the component to be managed is located and the heat transfer medium circulating in the pipeline; The determining, based on the current temperature, the preset operating temperature and the ambient temperature, whether the ambient temperature is beneficial to the thermal management of the component to be managed includes: When the current temperature is lower than the preset working temperature and lower than the ambient temperature, it is determined that the ambient temperature is beneficial to the thermal management of the component to be managed; or, when the current temperature is higher than the preset working temperature and higher than the ambient temperature, it is determined that the ambient temperature is beneficial to the thermal management of the component to be managed; when the current temperature is lower than the preset working temperature but higher than the ambient temperature, it is determined that the ambient temperature is unfavorable to the thermal management of the component to be managed; or, when the current temperature is higher than the preset working temperature but lower than the ambient temperature, it is determined that the ambient temperature is unfavorable to the thermal management of the component to be managed.

2. The thermal management method according to claim 1, characterized in that: The integrated storage and charging machine further includes a cold storage device, and after obtaining the second absolute value, further includes: When the second absolute value is not greater than the second difference threshold, determining whether the current temperature is less than the preset operating temperature; When the current temperature is greater than the preset operating temperature, the first cooling mode or the second cooling mode is selected to be turned on according to the current electricity price, wherein, when the first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of refrigerant to achieve cooling of the component to be managed, and when the second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of the cold capacity of the cold storage device to achieve cooling of the component to be managed.

3. The thermal management method according to claim 2, characterized in that: The step of selecting to start the first cooling mode or the second cooling mode according to the current electricity price includes: When the current electricity price is less than a preset electricity price threshold, selecting to start the first cooling mode; When the current electricity price is not less than the electricity price threshold, the second cooling mode is selected to be turned on.

4. The thermal management method according to any one of claims 1 to 3, characterized in that: The storage-charging integrated machine further includes a circulation pump connected to the component to be managed through the pipeline, and the self-circulation mode is started, including: Determining the rotation speed of the circulation pump according to the current temperature and the preset working temperature; The circulation pump is started according to the determined rotation speed to start the self-circulation mode.

5. The thermal management method according to any one of claims 1 to 3, characterized in that: After obtaining the second absolute value, the method further includes: When the second absolute value is not greater than the second difference threshold, determining whether the current temperature is less than the operating temperature; When the current temperature is lower than the operating temperature, the heating mode is turned on. When the heating mode is turned on, the thermal management system of the integrated storage and charging machine is configured to heat the component to be managed by heating the heat transfer medium in the pipeline.

6. The thermal management method according to any one of claims 1 to 3, characterized in that: After judging whether the ambient temperature is favorable for the thermal management of the component to be managed according to the current temperature, the preset working temperature and the ambient temperature, the method further includes: In a case where the ambient temperature is unfavorable for the thermal management of the component to be managed, determining whether the current temperature is less than the preset operating temperature; When the current temperature is lower than the preset operating temperature, the heating mode is turned on. When the heating mode is turned on, the thermal management system of the storage and charging machine is configured to heat the component to be managed by heating the heat transfer medium in the pipeline.

7. The thermal management method according to any one of claims 1 to 3, characterized in that: The integrated storage and charging machine further includes a cold storage device, and after judging whether the ambient temperature is favorable for the thermal management of the component to be managed according to the current temperature, the preset working temperature and the ambient temperature, further includes: In a case where the ambient temperature is unfavorable for the thermal management of the component to be managed, determining whether the current temperature is less than the preset operating temperature; When the current temperature is greater than the preset operating temperature, the first cooling mode and / or the second cooling mode is selected to be turned on according to the current electricity price, wherein, when the first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of refrigerant to achieve cooling of the component to be managed, and when the second cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of the cold capacity of the cold storage device to achieve cooling of the component to be managed.

8. The thermal management method according to claim 7, characterized in that: The step of selecting to start the first cooling mode and / or the second cooling mode according to the current electricity price includes: When the current electricity price is less than the preset electricity price threshold, the first cooling mode is selected to be turned on, wherein when the first cooling mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by cooling the refrigerant to achieve cooling of the component to be managed; When the current electricity price is not less than the electricity price threshold, determining whether the cold storage device has cold capacity; When there is cold energy in the cold storage device, the second refrigeration mode is selected to be turned on, or the first refrigeration mode and the second refrigeration mode are selected to be turned on, wherein when the second refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by the cold energy of the cold storage device to achieve refrigeration of the component to be managed.

9. The thermal management method according to claim 8, characterized in that: When there is cold energy in the cold storage device, the second cooling mode is selected to be turned on, or the first cooling mode and the second cooling mode are selected to be turned on, including: In the case where the cold storage device has cold capacity, determining the cold capacity required by the component to be managed and the heat generation of the component to be managed; Determining the required cooling capacity according to the cooling capacity required by the component to be managed and the heat production; The required cooling capacity is compared with the cooling capacity stored in the cooling storage device. If the cooling capacity stored in the cooling storage device is less than the required cooling capacity, the first cooling mode and the second cooling mode are selected to be turned on.

10. The thermal management method according to any one of claims 1 to 3, characterized in that: The integrated storage and charging machine further includes a cold storage device, and the thermal management method further includes: When the first absolute value is not less than the first difference threshold and the current temperature is greater than the preset operating temperature, the first refrigeration mode and the second refrigeration mode are turned on, wherein, when the first refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of refrigerant to achieve refrigeration of the component to be managed, and when the second refrigeration mode is turned on, the thermal management system of the storage and charging machine is configured to cool the heat transfer medium in the pipeline by means of the cold capacity of the cold storage device to achieve refrigeration of the component to be managed.

11. The thermal management method according to any one of claims 1 to 3, characterized in that: The thermal management method further comprises: When the first absolute value is not less than the first difference threshold and the current temperature is less than the preset operating temperature, the heating mode is turned on, wherein when the heating mode is turned on, the thermal management system of the storage and charging machine is configured to heat the component to be managed by heating the heat transfer medium in the pipeline.

12. A thermal management device for a storage and charging machine, characterized in that: include: A current temperature acquisition module, used to acquire the current temperature of the component to be managed, where the component to be managed is an energy storage or transmission component of the storage-charging machine; A first absolute value calculation module, used to calculate the absolute value of the difference between the current temperature and the preset operating temperature of the component to be managed, to obtain a first absolute value; A module for judging whether the ambient temperature is favorable is used to judge whether the ambient temperature is favorable to the thermal management of the component to be managed according to the current temperature, the preset working temperature and the ambient temperature when the first absolute value is less than a preset first difference threshold, the ambient temperature being the temperature of the environment in which the component to be managed is located, wherein judging whether the ambient temperature is favorable to the thermal management of the component to be managed according to the current temperature, the preset working temperature and the ambient temperature comprises: judging that the ambient temperature is favorable to the thermal management of the component to be managed when the current temperature is less than the preset working temperature and the current temperature is less than the ambient temperature, or judging that the ambient temperature is favorable to the thermal management of the component to be managed when the current temperature is greater than the preset working temperature and the current temperature is greater than the ambient temperature; judging that the ambient temperature is unfavorable to the thermal management of the component to be managed when the current temperature is less than the preset working temperature but greater than the ambient temperature, or judging that the ambient temperature is unfavorable to the thermal management of the component to be managed when the current temperature is greater than the preset working temperature but less than the ambient temperature; A second absolute value calculation module, configured to calculate an absolute value of a difference between the current temperature and the ambient temperature to obtain a second absolute value when the ambient temperature is favorable for thermal management of the component to be managed; The self-circulation mode activation module is used to activate the self-circulation mode when the second absolute value is greater than a preset second difference threshold value, wherein when the self-circulation mode is activated, the thermal management system of the storage and charging machine is configured to transfer heat between the environment where the component to be managed is located and the heat transfer medium circulating in the pipeline to achieve thermal management of the component to be managed connected to the pipeline.

13. 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 method according to any one of claims 1 to 11 is implemented.

14. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 11 is implemented.

15. A computer program product, characterized in that The invention comprises a computer program, which, when being executed, enables the method according to any one of claims 1 to 11 to be performed.

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