Thermal management method of energy storage box, energy storage box and battery management system

Abstract

The invention discloses a heat management method of an energy storage box, the energy storage box, a battery management system and a computer readable storage medium, the energy storage box comprises a distribution box, a main control box, an energy storage device, a temperature adjusting device, a first heat exchange device and a second heat exchange device, and at least part of the first heat exchange device is arranged in the distribution box; at least part of the second heat exchange device is arranged in the main control box, the temperature adjusting device heats or cools a heat exchange medium and selectively communicates with at least two of the first medium flow path, the first heat exchange device and the second heat exchange device, and the method comprises the steps that temperature information of a battery in the energy storage device is obtained, and the temperature of the heat exchange medium is obtained; and the temperature adjusting device is controlled according to the temperature information and the temperature of the heat exchange medium. Therefore, through the thermal management method, temperature management can be safely and reliably carried out on the distribution box, the main control box and the energy storage device, the use safety of the energy storage box can be improved, and the energy consumption of the energy storage box can be reduced.

Description

Technical Field

[0001] The present application relates to the field of energy storage boxes, and in particular, to a thermal management method for energy storage boxes, an energy storage box, a battery management system, and a computer-readable storage medium. Background Art

[0002] In the related art, the existing energy storage container has a distribution box, a main control box and an energy storage device. During the use of the energy storage container, the distribution box, the main control box and the energy storage device all need to be temperature managed so that the distribution box, the main control box and the energy storage device are all in an appropriate temperature range. However, the thermal management method of the existing energy storage container is unreasonable, and it is impossible to safely and reliably manage the temperature of the distribution box, the main control box and the energy storage device, which not only affects the safety of the use of the energy storage container, but also increases the energy consumption of the energy storage container. Summary of the invention

[0003] The present application aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the present application proposes a thermal management method for an energy storage box, which is conducive to improving the safety of the energy storage box and reducing the energy consumption of the energy storage box.

[0004] In a first aspect, an embodiment of the present application provides a thermal management method for an energy storage box, wherein the energy storage box includes a distribution box, a main control box, an energy storage device, a temperature regulating device, a first heat exchange device, and a second heat exchange device, wherein the energy storage device has a first medium flow path, at least a portion of the first heat exchange device is disposed in the distribution box and exchanges heat with the distribution box, at least a portion of the second heat exchange device is disposed in the main control box and exchanges heat with the main control box, the temperature regulating device selectively heats or cools a heat exchange medium, and selectively communicates with at least two of the first medium flow path, the first heat exchange device, and the second heat exchange device, so that the heat exchange medium flows into at least two of the first medium flow path, the first heat exchange device, and the second heat exchange device, wherein the method includes:

[0005] Obtaining temperature information of the battery in the energy storage device and obtaining the temperature of the heat exchange medium;

[0006] The temperature regulating device is controlled according to the temperature information and the temperature of the heat exchange medium to regulate at least one of the temperature in the energy storage device, the temperature in the distribution box, and the temperature in the main control box.

[0007] In the above technical scheme, through the thermal management method of the present application, the temperature of the distribution box, the main control box and the energy storage device can be safely and reliably managed, which is beneficial to improving the safety of the use of the energy storage box and reducing the energy consumption of the energy storage box.

[0008] In some embodiments, the temperature control device is controlled according to temperature information and the temperature of the heat exchange medium, including: determining at least one of the maximum battery temperature and the minimum battery temperature according to the temperature information; controlling the temperature control device according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium.

[0009] In the above technical solution, the temperature control device can be controlled according to multiple parameters, so that the temperature of the distribution box, the main control box and the energy storage device can be managed safely and reliably.

[0010] In some embodiments, the temperature control device is controlled based on at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, including: when the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the first preset medium temperature, the temperature control device is controlled to perform heating until the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, wherein the second preset medium temperature is greater than the first preset medium temperature.

[0011] In the above technical solution, the temperature control device can be used to perform heating according to the minimum battery temperature and the temperature of the heat exchange medium to increase the temperature of the heat exchange medium, so that the battery temperature can be increased and regulated when the battery temperature is too low to increase the battery temperature, which is beneficial to reduce the time the battery works at low temperature and to increase the service life of the battery.

[0012] In some embodiments, the temperature control device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than the first preset medium temperature and less than the second preset medium temperature, then when the temperature control device is performing heating work, the temperature control device is controlled to maintain heating work; when the temperature control device is not performing heating work, the temperature control device is controlled to perform self-circulation of the heat exchange medium.

[0013] In the above technical solution, when the minimum battery temperature is less than or equal to the first preset battery temperature, the temperature control device can be controlled according to the temperature of the heat exchange medium and the current working state of the temperature control device, which is beneficial to improve the rationality of the control logic, enable the battery to be in a suitable temperature range for a long time, and help reduce the energy consumption of the energy storage box.

[0014] In some embodiments, the temperature control device is controlled based on at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature control device is controlled to perform self-circulation of the heat exchange medium.

[0015] In the above technical solution, when the minimum battery temperature is less than or equal to the first preset battery temperature, the temperature regulating device can be controlled according to the temperature of the heat exchange medium to perform self-circulation of the heat exchange medium, thereby reducing the energy consumption of the energy storage box while meeting the battery temperature control requirements, which is conducive to improving the rationality of the control logic.

[0016] In some embodiments, the temperature control device is controlled based on at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, including: when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature control device performs heating operation, then when the temperature of the heat exchange medium is less than the second preset medium temperature, the temperature control device is controlled to maintain heating operation; when the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature control device is controlled to perform self-circulation of the heat exchange medium.

[0017] In the above technical solution, when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, and the temperature control device performs heating work, the temperature control device can be controlled according to the temperature of the heat exchange medium, which is beneficial to improve the rationality of the control logic, enable the battery to be in a suitable temperature range for a long time, and help reduce the energy consumption of the energy storage box.

[0018] In some embodiments, when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, the method further includes: if the temperature control device is not performing heating work, then when the temperature control device is performing self-circulation of the heat exchange medium, controlling the temperature control device to maintain the self-circulation of the heat exchange medium; when the temperature control device is not performing self-circulation of the heat exchange medium, controlling the temperature control device to sleep.

[0019] In the above technical solution, when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, and the temperature control device is not performing heating work, the temperature control device can be controlled according to the current working mode of the temperature control device, which is beneficial to improve the rationality of the control logic and reduce the energy consumption of the energy storage box.

[0020] In some embodiments, the temperature control device is controlled based on at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, including: when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, then when the temperature of the heat exchange medium is greater than or equal to the third preset medium temperature, the temperature control device is controlled to perform cooling until the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, wherein the third preset medium temperature is greater than the fourth preset medium temperature, and the third preset battery temperature is greater than the second preset battery temperature.

[0021] In the above technical solution, the temperature control device can be used to perform refrigeration according to the minimum battery temperature, the maximum battery temperature and the temperature of the heat exchange medium to reduce the temperature of the heat exchange medium, so that the battery can be cooled and regulated when the battery temperature is too high to reduce the battery temperature, which is beneficial to reduce the time the battery works at high temperature and to increase the service life of the battery.

[0022] In some embodiments, the temperature control device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, then when the temperature of the heat exchange medium is less than the third preset medium temperature and greater than the fourth preset medium temperature, if the temperature control device performs cooling operation, the temperature control device is controlled to maintain cooling operation; if the temperature control device does not perform cooling operation, the temperature control device is controlled to perform self-circulation of the heat exchange medium; wherein the third preset battery temperature is greater than the second preset battery temperature.

[0023] In the above technical scheme, the temperature control device can be controlled according to the minimum battery temperature, the maximum battery temperature and the temperature of the heat exchange medium, so that the temperature control device maintains cooling operation or the temperature control device performs self-circulation of the heat exchange medium, which is beneficial to improve the rationality of the control logic, can keep the battery in a suitable temperature range for a long time, and is beneficial to reduce the energy consumption of the energy storage box.

[0024] In some embodiments, the temperature control device is controlled based on at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature control device is controlled to perform self-circulation of the heat exchange medium.

[0025] In the above technical solution, when the minimum battery temperature is greater than the third preset battery temperature and the maximum battery temperature is greater than the fourth preset battery temperature, the temperature regulating device can be controlled according to the temperature of the heat exchange medium to perform self-circulation of the heat exchange medium, which is beneficial to improve the rationality of the control logic and reduce the energy consumption of the energy storage box.

[0026] In some embodiments, the temperature control device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is less than or equal to the third preset battery temperature, or the maximum battery temperature is less than or equal to the fourth preset battery temperature, then when the maximum battery temperature is greater than the fifth preset temperature, if the temperature control device performs cooling operation, then when the temperature of the heat exchange medium is greater than the fourth preset medium temperature, the temperature control device is controlled to maintain cooling operation; when the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature control device is controlled to perform self-circulation of the heat exchange medium; wherein the third preset battery temperature is greater than the second preset battery temperature, and the fifth preset battery temperature is less than the fourth preset battery temperature.

[0027] In the above technical solution, when the minimum battery temperature is greater than the second preset battery temperature, the temperature control device can be controlled according to the minimum battery temperature, the maximum battery temperature and the temperature of the heat exchange medium, so that the temperature control device maintains cooling operation or the temperature control device performs self-circulation of the heat exchange medium, thereby safely and reliably managing the temperature of the energy storage device.

[0028] In some embodiments, when the maximum battery temperature is greater than a fifth preset temperature, the method further includes: if the temperature control device is not performing cooling work, then when the temperature control device is performing self-circulation of the heat exchange medium, controlling the temperature control device to maintain self-circulation of the heat exchange medium; when the temperature control device is not performing self-circulation of the heat exchange medium, controlling the temperature control device to sleep.

[0029] In the above technical solution, when the maximum battery temperature is greater than the fifth preset temperature, the temperature control device can be controlled to perform self-circulation of the heat exchange medium or sleep according to the current working state of the temperature control device, thereby taking into account both temperature control management and reducing energy consumption.

[0030] In some embodiments, when the maximum battery temperature is less than or equal to a fifth preset temperature, the method further includes: if the temperature difference between the maximum battery temperature and the minimum battery temperature is greater than a first preset temperature threshold, controlling the temperature regulating device to perform self-circulation of the heat exchange medium.

[0031] In the above technical solution, the working state of the temperature regulating device can be controlled according to the temperature difference between the highest battery temperature and the lowest battery temperature, which can make the thermal management logic of the present application more reasonable and enable safer and more reliable temperature management of the energy storage device.

[0032] In some embodiments, the first heat exchange device includes a first drive pump and a first heat exchange fan, wherein, when the first heat exchange device participates in heat exchange, the method further includes: if the temperature of the heat exchange medium is less than a fifth preset medium temperature, or the temperature regulating device performs refrigeration work, then when the temperature in the energy storage device is greater than the first preset temperature and less than or equal to the second preset temperature, or the temperature in the distribution box is greater than the third preset temperature and less than or equal to the fourth preset temperature, the first heat exchange fan is controlled to be turned on at a first speed and to operate according to a first preset duty cycle; when the temperature in the energy storage device is greater than the second preset temperature and less than or equal to the fifth preset temperature, or the temperature in the distribution box is greater than the fourth preset temperature and less than or equal to the sixth preset temperature, the first heat exchange fan is controlled to be turned on at a first speed and to operate according to a first preset duty cycle; when the temperature in the energy storage device is greater than the second preset temperature and less than or equal to the fifth preset temperature, or the temperature in the distribution box is greater than the fourth preset temperature and less than or equal to the sixth preset temperature, The first driving pump is turned on, and the first heat exchange fan is controlled to be turned on at a second speed and to operate according to a second preset duty cycle, wherein the second speed is greater than the first speed, and the second preset duty cycle is greater than the first preset duty cycle; when the temperature in the energy storage device is greater than the fifth preset temperature, or the temperature in the distribution box is greater than the sixth preset temperature, the first driving pump is controlled to be turned on, and the first heat exchange fan is controlled to be turned on at a third speed and to operate according to a third preset duty cycle, wherein the third speed is greater than the second speed, and the third preset duty cycle is greater than the second preset duty cycle; when the temperature in the energy storage device is less than or equal to the first preset temperature, and the temperature in the distribution box is less than or equal to the third preset temperature, the first driving pump and the first heat exchange fan are controlled to be turned off respectively.

[0033] In the above technical solution, when the first heat exchange device participates in heat exchange and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature control device is performing cooling work, the first heat exchange fan and the first drive pump can be controlled to operate according to the temperature in the energy storage device and / or the temperature in the distribution box, so that the temperature of the distribution box can be safely and reliably managed, and the temperature of the distribution box can be kept within an appropriate temperature range.

[0034] In some embodiments, when the temperature of the heat exchange medium is greater than or equal to the fifth preset medium temperature and the temperature control device is performing heating work, the method also includes: if the temperature in the energy storage device is lower than the seventh preset temperature, or the temperature in the distribution box is lower than the eighth preset temperature, then controlling the first drive pump and the first heat exchange fan to be turned on respectively; if the temperature in the energy storage device is greater than or equal to the seventh preset temperature, and the temperature in the distribution box is greater than or equal to the eighth preset temperature, then controlling the first drive pump and the first heat exchange fan to be turned off respectively.

[0035] In the above technical solution, when the first heat exchange device participates in heat exchange, and the temperature of the heat exchange medium is greater than or equal to the fifth preset medium temperature, and the temperature control device performs heating work, the first heat exchange fan and the first drive pump can be controlled to work according to the temperature in the energy storage device and / or the temperature in the distribution box, so that the temperature of the distribution box can be safely and reliably managed, and it is beneficial to reduce the energy consumption of the energy storage box.

[0036] In some embodiments, the second heat exchange device includes a second heat exchange fan, and the method also includes: when the temperature in the main control box is greater than a ninth preset temperature and less than or equal to a tenth preset temperature, controlling the second heat exchange fan to turn on at a fourth speed and to work according to a fourth preset duty cycle; when the temperature in the main control box is greater than a tenth preset temperature and less than or equal to an eleventh preset temperature, controlling the second heat exchange fan to turn on at a fifth speed and to work according to a fifth preset duty cycle, wherein the fifth speed is greater than the fourth speed, and the fifth preset duty cycle is greater than the fourth preset duty cycle; when the temperature in the main control box is greater than the eleventh preset temperature, controlling the second heat exchange fan to turn on at a sixth speed and to work according to a sixth preset duty cycle, wherein the sixth speed is greater than the fifth speed, and the sixth preset duty cycle is greater than the fifth preset duty cycle; when the temperature in the main control box is less than or equal to the ninth preset temperature, controlling the second heat exchange fan to turn off.

[0037] In the above technical solution, the operation of the second heat exchange fan can be controlled according to the temperature in the main control box, so that the temperature of the main control box can be safely and reliably managed, and the temperature of the main control box can be kept within an appropriate temperature range for a long time.

[0038] In some embodiments, when the temperature in the main control box is greater than an eleventh preset temperature, the method further includes: if the duration exceeds a first preset time, controlling the main control box to perform over-temperature protection.

[0039] In the above technical solution, if the temperature inside the main control box is greater than the eleventh preset temperature for a period of time exceeding the first preset time, the main control box can be controlled to perform over-temperature protection, thereby reducing the probability of the main control box being damaged due to excessive temperature for too long, and the probability of dangerous situations occurring can be reduced.

[0040] In some embodiments, the second heat exchange device further includes a second drive pump, wherein, when the second heat exchange device participates in heat exchange, the method further includes: if the temperature in the main control box is greater than a tenth preset temperature, controlling the second drive pump to turn on.

[0041] In the above technical solution, when the temperature inside the main control box is greater than the tenth preset temperature, the main control box can be cooled by a heat exchange medium, thereby quickly reducing the temperature of the main control box and keeping the temperature of the main control box within an appropriate temperature range for a long time.

[0042] In a second aspect, an embodiment of the present application further provides a battery management system, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above method when executing the computer program.

[0043] In a third aspect, an embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0044] In a fourth aspect, an embodiment of the present application further provides an energy storage box, comprising: a distribution box, a main control box, an energy storage device, a temperature regulating device, a first heat exchange device and a second heat exchange device, the energy storage device having a first medium flow path, at least a portion of the first heat exchange device being disposed in the distribution box and exchanging heat with the distribution box, at least a portion of the second heat exchange device being disposed in the main control box and exchanging heat with the main control box, the temperature regulating device selectively heating or cooling the heat exchange medium, and selectively communicating with at least two of the first medium flow path, the first heat exchange device and the second heat exchange device so that the heat exchange medium flows into at least two of the first medium flow path, the first heat exchange device and the second heat exchange device; a control device for obtaining temperature information of a battery in the energy storage device, obtaining the temperature of the heat exchange medium, and controlling the temperature regulating device according to the temperature information and the temperature of the heat exchange medium to adjust at least one of the temperature in the energy storage device, the temperature in the distribution box and the temperature in the main control box.

[0045] In the above technical solution, the temperature of the distribution box, the main control box and the energy storage device can be safely and reliably managed, which is beneficial to improving the safety of the energy storage box and reducing the energy consumption of the energy storage box.

[0046] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a flow chart of a thermal management method for an energy storage box according to the present application;

[0048] Figure 2 is a flow chart of a specific embodiment of a thermal management method for an energy storage box according to the present application;

[0049] Figure 3 is a flow chart of a specific embodiment of a thermal management method for an energy storage box according to the present application;

[0050] Figure 4 is a flow chart of a specific embodiment of a thermal management method for an energy storage box according to the present application;

[0051] Figure 5 is a schematic diagram of an energy storage box according to the present application;

[0052] Figure 6 It is a connection diagram of the energy storage device, the temperature regulating device, the first heat exchange device and the second heat exchange device according to the present application;

[0053] Figure 7 is another connection schematic diagram of the energy storage device, the temperature regulating device, the first heat exchange device and the second heat exchange device according to the present application;

[0054] Figure 8 is another connection schematic diagram of the energy storage device, the temperature regulating device, the first heat exchange device and the second heat exchange device according to the present application;

[0055] Fig. 9 is another connection schematic diagram of the energy storage device, the temperature regulating device, the first heat exchange device and the second heat exchange device according to the present application;

[0056] Fig.10 is another connection schematic diagram of the energy storage device, the temperature regulating device, the first heat exchange device and the second heat exchange device according to the present application;

[0057] Fig.11 is another connection schematic diagram of the energy storage device, the temperature regulating device, the first heat exchange device and the second heat exchange device according to the present application;

[0058] Fig.12 It is a block diagram of a processor, a memory, a communication interface, and a communication bus according to the present application.

[0059] Reference numerals:

[0060] Energy storage box 100;

[0061] Box 10; distribution box 11; main control box 12; energy storage device 13; temperature control device 14; first heat exchange device 15; second heat exchange device 16;

[0062] Processor 1201; communication interface 1202; memory 1203; communication bus 1204. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0064] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0065] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0066] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0067] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, G and / or H can represent: G exists alone, G and H exist at the same time, and H exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0068] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0069] The term "plurality" used in the present application refers to two or more (including two).

[0070] The energy storage box of the present application can be used to place an energy storage device, and the energy storage device can have a battery. The battery can include multiple battery cells, and the battery cells can include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., which are not limited in the embodiments of the present application. The battery cell can be cylindrical, flat, rectangular, or in other shapes, etc., which are not limited in the embodiments of the present application. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, which are not limited in the embodiments of the present application.

[0071] The battery cell includes a shell, an electrode assembly and an electrolyte, and the shell is used to contain the electrode assembly and the electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.

[0072] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0073] The existing energy storage container has a distribution box, a main control box and an energy storage device. During the use of the energy storage container, the distribution box, the main control box and the energy storage device all need to be temperature managed so that the distribution box, the main control box and the energy storage device are all in an appropriate temperature range. However, the thermal management method of the existing energy storage container is unreasonable, and it is impossible to safely and reliably manage the temperature of the distribution box, the main control box and the energy storage device, which not only affects the safety of the use of the energy storage container, but also increases the energy consumption of the energy storage container.

[0074] Based on the above considerations, in order to solve the technical problem that the energy storage container cannot safely and reliably manage the temperature of the distribution box, the main control box and the energy storage device. The present application proposes a thermal management method for an energy storage box, the energy storage box includes a distribution box, a main control box, an energy storage device, a temperature regulating device, a first heat exchange device and a second heat exchange device, the energy storage device has a first medium flow path, at least part of the first heat exchange device is arranged in the distribution box and exchanges heat with the distribution box, at least part of the second heat exchange device is arranged in the main control box and exchanges heat with the main control box, the temperature regulating device selectively heats or cools the heat exchange medium, and selectively communicates with at least two of the first medium flow path, the first heat exchange device and the second heat exchange device, so that the heat exchange medium flows into at least two of the first medium flow path, the first heat exchange device and the second heat exchange device, the method includes: obtaining the temperature information of the battery in the energy storage device, and obtaining the temperature of the heat exchange medium; controlling the temperature regulating device according to the temperature information and the temperature of the heat exchange medium to adjust at least one of the temperature in the energy storage device, the temperature in the distribution box and the temperature in the main control box.

[0075] Through the thermal management method of the present application, the temperature of the distribution box, the main control box and the energy storage device can be safely and reliably managed, which is beneficial to improving the safety of the energy storage box and reducing the energy consumption of the energy storage box.

[0076] Reference below Figure 1-Figure 11 A thermal management method of an energy storage box 100 and the energy storage box 100 according to an embodiment of the present application are described.

[0077] like Figure 5-Figure 11 As shown, the energy storage box 100 according to the embodiment of the present application includes: a distribution box 11, a main control box 12, an energy storage device 13, a temperature regulating device 14, a first heat exchange device 15 and a second heat exchange device 16, the energy storage device 13 has a first medium flow path, at least part of the first heat exchange device 15 is arranged in the distribution box 11 and exchanges heat with the distribution box 11, at least part of the second heat exchange device 16 is arranged in the main control box 12 and exchanges heat with the main control box 12, the temperature regulating device 14 selectively heats or cools the heat exchange medium, and selectively exchanges heat with the first medium At least two of the flow path, the first heat exchange device 15 and the second heat exchange device 16 are connected to each other so that the heat exchange medium flows into at least two of the first medium flow path, the first heat exchange device 15 and the second heat exchange device 16; a control device is used to obtain temperature information of the battery in the energy storage device 13, and obtain the temperature of the heat exchange medium, and control the temperature regulating device 14 according to the temperature information and the temperature of the heat exchange medium to adjust at least one of the temperature in the energy storage device 13, the temperature in the distribution box 11 and the temperature in the main control box 12.

[0078] The energy storage box 100 has a box body 10, and the distribution box 11, the main control box 12 and the energy storage device 13 can all be arranged in the box body 10. The energy storage device 13 has a first medium flow path, and a heat exchange medium flows in the first medium flow path.

[0079] At least part of the first heat exchange device 15 is arranged in the distribution box 11. As some optional embodiments of the present application, part of the structure of the first heat exchange device 15 is arranged in the distribution box 11. As some optional embodiments of the present application, the entire structure of the first heat exchange device 15 is arranged in the distribution box 11. The first heat exchange device 15 has a second medium flow path, and a heat exchange medium flows in the second medium flow path. The first heat exchange device 15 can perform heat exchange with the distribution box 11 to adjust the temperature of the distribution box 11 so that the temperature of the distribution box 11 is in an appropriate temperature range.

[0080] At least part of the second heat exchange device 16 is arranged in the main control box 12. As some optional embodiments of the present application, part of the structure of the second heat exchange device 16 is arranged in the main control box 12. As some optional embodiments of the present application, the entire structure of the second heat exchange device 16 is arranged in the main control box 12. The second heat exchange device 16 has a third medium flow path, and a heat exchange medium flows in the third medium flow path. The second heat exchange device 16 can perform heat exchange with the main control box 12 to adjust the temperature of the main control box 12 so that the temperature of the main control box 12 is in an appropriate temperature range.

[0081] The temperature regulating device 14 can heat the heat exchange medium, and the temperature regulating device 14 can also cool the heat exchange medium. Moreover, the temperature regulating device 14 can selectively communicate with at least two of the first medium flow path, the first heat exchange device 15 and the second heat exchange device 16 to allow the heat exchange medium to flow into at least two of the first medium flow path, the first heat exchange device 15 and the second heat exchange device 16.

[0082] As an optional embodiment of the present application, the temperature regulating device 14 can be connected to the first medium flow path and the first heat exchange device 15 to allow the heat exchange medium to flow into the first medium flow path and the first heat exchange device 15 .

[0083] As an optional embodiment of the present application, the temperature regulating device 14 can be connected to the first medium flow path and the second heat exchange device 16 to allow the heat exchange medium to flow into the first medium flow path and the second heat exchange device 16 .

[0084] As an optional embodiment of the present application, the temperature regulating device 14 can be connected to the first heat exchange device 15 and the second heat exchange device 16 so that the heat exchange medium flows into the first heat exchange device 15 and the second heat exchange device 16 .

[0085] As an optional embodiment of the present application, the temperature control device 14 can be connected to the first medium flow path, the first heat exchange device 15, and the second heat exchange device 16 to allow the heat exchange medium to flow into the first medium flow path, the first heat exchange device 15, and the second heat exchange device 16.

[0086] As some optional embodiments of the present application, Figure 6As shown, the temperature regulating device 14, the first medium flow path, the second medium flow path and the third medium flow path can be connected in sequence to form a medium circulation flow path.

[0087] As some optional embodiments of the present application, Figure 7 As shown, the number of temperature control devices 14 can be set to two, one of which can be connected to the first medium flow path to form a first medium circulation flow path, and the other temperature control device 14, the second medium flow path and the third medium flow path can be connected in sequence to form a second medium circulation flow path.

[0088] As some optional embodiments of the present application, Figure 8 As shown, the temperature regulating device 14 can be connected to the first medium flow path to form a third medium circulation flow path, and the temperature regulating device 14, the second medium flow path and the third medium flow path can be connected in sequence to form a fourth medium circulation flow path.

[0089] As some optional embodiments of the present application, Fig. 9 As shown, the temperature regulating device 14 can be connected to the second medium flow path to form a fifth medium circulation flow path, and the temperature regulating device 14, the first medium flow path and the third medium flow path can be connected in sequence to form a sixth medium circulation flow path.

[0090] As some optional embodiments of the present application, Fig.10 As shown, the temperature regulating device 14 can be connected to the third medium flow path to form a seventh medium circulation flow path, and the temperature regulating device 14, the first medium flow path and the second medium flow path can be connected in sequence to form an eighth medium circulation flow path.

[0091] As some optional embodiments of the present application, Fig.11 As shown, the temperature regulating device 14 can be connected to the first medium flow path to form a ninth medium circulation flow path, the temperature regulating device 14 can be connected to the second medium flow path to form a tenth medium circulation flow path, and the temperature regulating device 14 can be connected to the third medium flow path to form an eleventh medium circulation flow path.

[0092] It needs to be explained that Figure 6-Figure 11 The embodiments shown are only exemplary and do not limit the application to Figure 6-Figure 11 In the embodiment shown, for example, Figure 6 The connectivity and Fig.11 The connection modes are combined to form a new embodiment, that is, the temperature regulating device 14, the first medium flow path, the second medium flow path and the third medium flow path can be connected in sequence to form a medium circulation flow path, and the temperature regulating device 14 can be connected with the first medium flow path to form a medium circulation flow path, the temperature regulating device 14 can be connected with the second medium flow path to form a medium circulation flow path, and the temperature regulating device 14 can be connected with the third medium flow path to form a medium circulation flow path.

[0093] As some optional embodiments of the present application, the number of energy storage devices 13 can be set to multiple, for example, the number of energy storage devices 13 can be set to but not limited to 3, 4, 5, 6, etc., the first medium flow paths of multiple energy storage devices 13 can be set in series, and the first medium flow paths of multiple energy storage devices 13 can also be set in parallel.

[0094] As some optional embodiments of the present application, the first heat exchange device 15 may include: a first heat exchange element, the first heat exchange element may have a second medium flow path, and the first heat exchange element may be attached to the distribution box 11.

[0095] As some optional embodiments of the present application, the second heat exchange device 16 may include: a second heat exchange element, the second heat exchange element may have a third medium flow path, and the second heat exchange element may be attached to the main control box 12.

[0096] As some optional embodiments of the present application, the control device can determine whether the temperature regulating device 14 is faulty. If the temperature regulating device 14 is faulty, the control device can report the fault level by means of but not limited to voice, light, etc., and the control device can selectively control the energy storage box 100 to stop working according to the fault level. If the temperature regulating device 14 is not faulty, the control device can obtain the temperature information of the battery in the energy storage device 13, the control device can obtain the temperature of the heat exchange medium, and the control device can control the temperature regulating device 14 according to the obtained temperature information of the battery in the energy storage device 13 and the temperature of the heat exchange medium, so that the temperature regulating device 14 heats the heat exchange medium, or cools the heat exchange medium, or neither heats nor cools the heat exchange medium, so as to control the temperature of the heat exchange medium, so as to adjust at least one of the temperature in the energy storage device 13, the temperature in the distribution box 11, and the temperature in the main control box 12.

[0097] In the above technical solution, at least one of the temperature in the energy storage device 13, the temperature in the distribution box 11 and the temperature in the main control box 12 can be selectively adjusted, and the temperature of the distribution box 11, the main control box 12 and the energy storage device 13 can be safely and reliably managed, which is beneficial to improving the safety of the use of the energy storage box 100 and reducing the energy consumption of the energy storage box 100.

[0098] According to some embodiments of the present application, the temperature control device 14 is controlled according to temperature information and the temperature of the heat exchange medium, including: determining at least one of the maximum battery temperature and the minimum battery temperature according to the temperature information; controlling the temperature control device 14 according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium.

[0099] Among them, the control device can obtain the temperature information of the batteries in the energy storage device 13 and the temperature of the heat exchange medium, and the control device can determine at least one of the maximum battery temperature and the minimum battery temperature based on the temperature information of the batteries in the energy storage device 13. It can be understood that the number of batteries in the energy storage device 13 can be multiple, for example, the number of batteries in the energy storage device 13 can be but not limited to 3, 4, 5, 6, etc., and the control device can control the temperature control device 14 based on at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium.

[0100] As some optional embodiments of the present application, the temperature regulating device 14 may be controlled according to the maximum battery temperature and the temperature of the heat exchange medium. As some optional embodiments of the present application, the temperature regulating device 14 may be controlled according to the minimum battery temperature and the temperature of the heat exchange medium. As some optional embodiments of the present application, the temperature regulating device 14 may be controlled according to the maximum battery temperature, the minimum battery temperature and the temperature of the heat exchange medium.

[0101] In the above technical solution, the temperature regulating device 14 can be controlled according to multiple parameters, so that the temperature of the distribution box 11, the main control box 12 and the energy storage device 13 can be managed safely and reliably.

[0102] According to some embodiments of the present application, Figure 2 As shown, the temperature regulating device 14 is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, including: when the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the first preset medium temperature, the temperature regulating device 14 is controlled to perform heating until the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, wherein the second preset medium temperature is greater than the first preset medium temperature.

[0103] Among them, the control device can obtain the temperature information of the battery in the energy storage device 13 and determine the minimum battery temperature according to the temperature information of the battery in the energy storage device 13. When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the first preset medium temperature, the control device can control the temperature regulating device 14 to perform heating work, so that the temperature regulating device 14 heats the heat exchange medium to increase the temperature of the heat exchange medium to be greater than or equal to the second preset medium temperature to adjust the battery temperature. The first preset battery temperature, the first preset medium temperature, and the second preset medium temperature can all be preset. The first preset battery temperature can be a single value or a range of values, the first preset medium temperature can be a single value or a range of values, and the second preset medium temperature can be a single value or a range of values.

[0104] As some optional embodiments of the present application, the first preset battery temperature may be but is not limited to any value between 15 degrees Celsius and 17 degrees Celsius. For example, the first preset battery temperature may be but is not limited to 15 degrees Celsius, 16 degrees Celsius, or 17 degrees Celsius.

[0105] As some optional embodiments of the present application, the first preset medium temperature can be but not limited to any value between 29 degrees Celsius and 31 degrees Celsius. For example, the first preset medium temperature can be but not limited to 29 degrees Celsius, 30 degrees Celsius, or 31 degrees Celsius.

[0106] As some optional embodiments of the present application, the second preset medium temperature can be but not limited to any value between 39 degrees Celsius and 41 degrees Celsius. For example, the second preset medium temperature can be but not limited to 39 degrees Celsius, 40 degrees Celsius, or 41 degrees Celsius.

[0107] In the above technical solution, the temperature regulating device 14 can be controlled to perform heating according to the minimum battery temperature and the temperature of the heat exchange medium to increase the temperature of the heat exchange medium, so that the battery temperature can be increased and regulated when the battery temperature is too low to increase the battery temperature, which is beneficial to reduce the time the battery works at low temperature and to increase the service life of the battery.

[0108] According to some embodiments of the present application, Figure 2 As shown, the temperature regulating device 14 is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than the first preset medium temperature and less than the second preset medium temperature, then when the temperature regulating device 14 is performing heating work, the temperature regulating device 14 is controlled to maintain heating work; when the temperature regulating device 14 is not performing heating work, the temperature regulating device 14 is controlled to perform heat exchange medium self-circulation work.

[0109] The control device may obtain the temperature information of the battery in the energy storage device 13 and determine the minimum battery temperature according to the temperature information of the battery in the energy storage device 13. When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than the first preset medium temperature and less than the second preset medium temperature, and the temperature regulating device 14 is performing heating work, the temperature regulating device 14 may be controlled to maintain the heating work to adjust the battery temperature.

[0110] When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than the first preset medium temperature and less than the second preset medium temperature, and the temperature regulating device 14 is not performing heating work, the temperature regulating device 14 can be controlled to perform self-circulation of the heat exchange medium to adjust the battery temperature.

[0111] Self-circulation operation can be understood as making the heat exchange medium circulate but not heating or cooling the heat exchange medium.

[0112] In the above technical solution, when the minimum battery temperature is less than or equal to the first preset battery temperature, the temperature control device 14 can be controlled according to the temperature of the heat exchange medium and the current working state of the temperature control device 14, which is beneficial to improve the rationality of the control logic, enable the battery to be in a suitable temperature range for a long time, and help reduce the energy consumption of the energy storage box 100.

[0113] According to some embodiments of the present application, Figure 2 As shown, the temperature regulating device 14 is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature regulating device 14 is controlled to perform self-circulation of the heat exchange medium.

[0114] The control device may obtain the temperature information of the battery in the energy storage device 13 and determine the minimum battery temperature according to the temperature information of the battery in the energy storage device 13. When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature regulating device 14 may be controlled to perform the self-circulation of the heat exchange medium to regulate the battery temperature.

[0115] In the above technical solution, when the minimum battery temperature is less than or equal to the first preset battery temperature, the temperature regulating device 14 can be controlled according to the temperature of the heat exchange medium to perform self-circulation of the heat exchange medium, thereby reducing the energy consumption of the energy storage box 100 while satisfying the battery temperature control, which is conducive to improving the rationality of the control logic.

[0116] According to some embodiments of the present application, Figure 2 As shown, the temperature regulating device 14 is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, including: when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature regulating device 14 performs heating work, then when the temperature of the heat exchange medium is less than the second preset medium temperature, the temperature regulating device 14 is controlled to maintain heating work; when the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature regulating device 14 is controlled to perform heat exchange medium self-circulation work.

[0117] The control device may obtain the temperature information of the battery in the energy storage device 13 and determine the minimum battery temperature according to the temperature information of the battery in the energy storage device 13 .

[0118] When the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature control device 14 is currently performing heating work and the current temperature of the heat exchange medium is less than the second preset medium temperature, the temperature control device 14 can be controlled to continue the heating work, that is, the temperature control device 14 can be controlled to maintain the current working mode.

[0119] When the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature control device 14 is currently performing heating work and the current temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature control device 14 can be controlled to perform self-circulation of the heat exchange medium.

[0120] The second preset battery temperature is greater than the first preset battery temperature. The second preset battery temperature can be preset. The second preset battery temperature can be a single value or a range of values.

[0121] As some optional embodiments of the present application, the second preset battery temperature may be but is not limited to any value between 17 degrees Celsius and 19 degrees Celsius. For example, the second preset battery temperature may be but is not limited to 17 degrees Celsius, 18 degrees Celsius, or 19 degrees Celsius.

[0122] In the above technical solution, when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, and the temperature regulating device 14 performs heating work, the temperature regulating device 14 can be controlled according to the temperature of the heat exchange medium, which is beneficial to improve the rationality of the control logic, enable the battery to be in a suitable temperature range for a long time, and help reduce the energy consumption of the energy storage box 100.

[0123] According to some embodiments of the present application, Figure 2 As shown, when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, the method also includes: if the temperature control device 14 is not performing heating work, then when the temperature control device 14 is performing self-circulation of the heat exchange medium, controlling the temperature control device 14 to maintain the self-circulation of the heat exchange medium; when the temperature control device 14 is not performing self-circulation of the heat exchange medium, controlling the temperature control device 14 to sleep.

[0124] The control device may obtain the temperature information of the battery in the energy storage device 13 and determine the minimum battery temperature according to the temperature information of the battery in the energy storage device 13 .

[0125] When the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature control device 14 is not performing heating work and the current temperature control device 14 is performing self-circulation of the heat exchange medium, the temperature control device 14 can be controlled to perform self-circulation of the heat exchange medium, that is, the temperature control device 14 can be controlled to maintain the current working mode.

[0126] When the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature control device 14 is not performing heating work and the current temperature control device 14 is not performing self-circulation of the heat exchange medium, the temperature control device 14 can be controlled to sleep, that is, the temperature control device 14 can be controlled to stop working.

[0127] In the above technical solution, when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, and the temperature control device 14 is not performing heating work, the temperature control device 14 can be controlled according to the current working mode of the temperature control device 14, which is beneficial to improve the rationality of the control logic and to reduce the energy consumption of the energy storage box 100.

[0128] According to some embodiments of the present application, Figure 2 As shown, the temperature control device 14 is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, including: when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, then when the temperature of the heat exchange medium is greater than or equal to the third preset medium temperature, the temperature control device 14 is controlled to perform cooling work until the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, wherein the third preset medium temperature is greater than the fourth preset medium temperature, and the third preset battery temperature is greater than the second preset battery temperature.

[0129] The control device may obtain the temperature information of the batteries in the energy storage device 13 and determine the minimum battery temperature and the maximum battery temperature according to the temperature information of the batteries in the energy storage device 13 .

[0130] When the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, and the temperature of the heat exchange medium is greater than or equal to the third preset medium temperature, the temperature regulating device 14 can be controlled to perform refrigeration, so that the temperature regulating device 14 refrigerates the heat exchange medium to reduce the temperature of the heat exchange medium to less than or equal to the fourth preset medium temperature to adjust the battery temperature. The third preset battery temperature, the fourth preset battery temperature, the third preset medium temperature, and the fourth preset medium temperature can all be preset. The third preset battery temperature can be a single value or a range of values, the fourth preset battery temperature can be a single value or a range of values, the third preset medium temperature can be a single value or a range of values, and the fourth preset medium temperature can be a single value or a range of values.

[0131] As some optional embodiments of the present application, the third preset battery temperature may be but is not limited to any value between 19 degrees Celsius and 21 degrees Celsius. For example, the third preset battery temperature may be but is not limited to 19 degrees Celsius, 20 degrees Celsius, or 21 degrees Celsius.

[0132] As some optional embodiments of the present application, the fourth preset battery temperature may be but is not limited to any value between 23 degrees Celsius and 25 degrees Celsius. For example, the fourth preset battery temperature may be but is not limited to 23 degrees Celsius, 24 degrees Celsius, or 25 degrees Celsius.

[0133] As some optional embodiments of the present application, the third preset medium temperature can be but not limited to any value between 20 degrees Celsius and 22 degrees Celsius. For example, the third preset medium temperature can be but not limited to 20 degrees Celsius, 21 degrees Celsius, or 22 degrees Celsius.

[0134] As some optional embodiments of the present application, the fourth preset medium temperature can be but not limited to any value between 9 degrees Celsius and 11 degrees Celsius. For example, the fourth preset medium temperature can be but not limited to 9 degrees Celsius, 10 degrees Celsius, or 11 degrees Celsius.

[0135] The fourth preset battery temperature may be greater than the third preset battery temperature.

[0136] In the above technical solution, the temperature control device 14 can be controlled to perform refrigeration according to the minimum battery temperature, the maximum battery temperature and the temperature of the heat exchange medium to reduce the temperature of the heat exchange medium, so that the battery can be cooled and regulated when the battery temperature is too high to reduce the battery temperature, which is beneficial to reduce the high-temperature working time of the battery and improve the service life of the battery.

[0137] According to some embodiments of the present application, Figure 2As shown, the temperature regulating device 14 is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, then when the temperature of the heat exchange medium is less than the third preset medium temperature and greater than the fourth preset medium temperature, if the temperature regulating device 14 performs cooling work, the temperature regulating device 14 is controlled to maintain cooling work; if the temperature regulating device 14 does not perform cooling work, the temperature regulating device 14 is controlled to perform heat exchange medium self-circulation work; wherein, the third preset battery temperature is greater than the second preset battery temperature.

[0138] The control device may obtain the temperature information of the batteries in the energy storage device 13 and determine the minimum battery temperature and the maximum battery temperature according to the temperature information of the batteries in the energy storage device 13 .

[0139] When the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, the maximum battery temperature is greater than the fourth preset battery temperature, the temperature of the heat exchange medium is less than the third preset medium temperature and greater than the fourth preset medium temperature, and the temperature control device 14 is performing cooling operation, the temperature control device 14 can be controlled to maintain cooling operation to lower the temperature of the heat exchange medium.

[0140] When the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, the maximum battery temperature is greater than the fourth preset battery temperature, the temperature of the heat exchange medium is less than the third preset medium temperature and greater than the fourth preset medium temperature, and the temperature control device 14 is not performing cooling work, the temperature control device 14 can be controlled to perform self-circulation of the heat exchange medium to adjust the battery temperature.

[0141] In the above technical solution, the temperature regulating device 14 can be controlled according to the minimum battery temperature, the maximum battery temperature and the temperature of the heat exchange medium, so that the temperature regulating device 14 maintains cooling operation or enables the temperature regulating device 14 to perform self-circulation of the heat exchange medium, thereby helping to improve the rationality of the control logic, enabling the battery to be in a suitable temperature range for a long time, and helping to reduce the energy consumption of the energy storage box 100.

[0142] According to some embodiments of the present application, Figure 2 As shown, the temperature regulating device 14 is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature regulating device 14 is controlled to perform self-circulation of the heat exchange medium.

[0143] Among them, when the lowest battery temperature is greater than the third preset battery temperature and the highest battery temperature is greater than the fourth preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature regulating device 14 can be controlled to perform self-circulation of the heat exchange medium to adjust the battery temperature.

[0144] In the above technical solution, when the minimum battery temperature is greater than the third preset battery temperature and the maximum battery temperature is greater than the fourth preset battery temperature, the temperature regulating device 14 can be controlled according to the temperature of the heat exchange medium to perform self-circulation of the heat exchange medium, which is beneficial to improve the rationality of the control logic and reduce the energy consumption of the energy storage box 100.

[0145] According to some embodiments of the present application, Figure 2 As shown, the temperature regulating device 14 is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is less than or equal to the third preset battery temperature, or the maximum battery temperature is less than or equal to the fourth preset battery temperature, then when the maximum battery temperature is greater than the fifth preset temperature, if the temperature regulating device 14 performs cooling work, then when the temperature of the heat exchange medium is greater than the fourth preset medium temperature, the temperature regulating device 14 is controlled to maintain cooling work; when the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature regulating device 14 is controlled to perform heat exchange medium self-circulation work; wherein, the third preset battery temperature is greater than the second preset battery temperature, and the fifth preset battery temperature is less than the fourth preset battery temperature.

[0146] Among them, when the lowest battery temperature is greater than the second preset battery temperature, if the lowest battery temperature is less than or equal to the third preset battery temperature or the highest battery temperature is less than or equal to the fourth preset battery temperature, and the highest battery temperature is greater than the fifth preset temperature, and the temperature regulating device 14 performs cooling work. If the temperature of the heat exchange medium is greater than the fourth preset medium temperature, the temperature regulating device 14 can be controlled to continue to maintain cooling work to reduce the temperature of the heat exchange medium.

[0147] When the lowest battery temperature is greater than the second preset battery temperature, if the lowest battery temperature is less than or equal to the third preset battery temperature or the highest battery temperature is less than or equal to the fourth preset battery temperature, and the highest battery temperature is greater than the fifth preset temperature, and the temperature regulating device 14 performs cooling work, then if the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature regulating device 14 can be controlled to perform heat exchange medium self-circulation work to adjust the battery temperature.

[0148] The fifth preset battery temperature may be a single value or a range of values. As some optional embodiments of the present application, the fifth preset battery temperature may be, but is not limited to, any value between 20 degrees Celsius and 22 degrees Celsius, for example, the fifth preset battery temperature may be, but is not limited to, 20 degrees Celsius, 21 degrees Celsius, or 22 degrees Celsius.

[0149] In the above technical solution, when the minimum battery temperature is greater than the second preset battery temperature, the temperature regulating device 14 can be controlled according to the minimum battery temperature, the maximum battery temperature and the temperature of the heat exchange medium, so that the temperature regulating device 14 maintains cooling operation or enables the temperature regulating device 14 to perform self-circulation of the heat exchange medium, thereby safely and reliably managing the temperature of the energy storage device 13.

[0150] According to some embodiments of the present application, Figure 2 As shown, when the maximum battery temperature is greater than the fifth preset temperature, the method also includes: if the temperature control device 14 is not performing cooling work, then when the temperature control device 14 is performing self-circulation of the heat exchange medium, controlling the temperature control device 14 to maintain the self-circulation of the heat exchange medium; when the temperature control device 14 is not performing self-circulation of the heat exchange medium, controlling the temperature control device 14 to sleep.

[0151] Among them, when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is less than or equal to the third preset battery temperature or the maximum battery temperature is less than or equal to the fourth preset battery temperature, and the maximum battery temperature is greater than the fifth preset temperature, and the temperature regulating device 14 is not performing cooling work, then when the temperature regulating device 14 is performing self-circulation of the heat exchange medium, the temperature regulating device 14 is controlled to maintain the self-circulation of the heat exchange medium.

[0152] When the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is less than or equal to the third preset battery temperature or the maximum battery temperature is less than or equal to the fourth preset battery temperature, and the maximum battery temperature is greater than the fifth preset temperature, and the temperature control device 14 is not performing cooling work, then when the temperature control device 14 is not performing self-circulation of the heat exchange medium, the temperature control device 14 is controlled to stop working.

[0153] In the above technical solution, when the maximum battery temperature is greater than the fifth preset temperature, the temperature control device 14 can be controlled to perform self-circulation of the heat exchange medium or sleep according to the current working state of the temperature control device 14, so as to take into account both temperature control management and energy consumption reduction.

[0154] According to some embodiments of the present application, Figure 2 As shown, when the maximum battery temperature is less than or equal to the fifth preset temperature, the method also includes: if the temperature difference between the maximum battery temperature and the minimum battery temperature is greater than the first preset temperature threshold, controlling the temperature regulating device 14 to perform self-circulation of the heat exchange medium.

[0155] When the maximum battery temperature is less than or equal to the fifth preset temperature, if the absolute value of the difference between the maximum battery temperature and the minimum battery temperature is greater than the first preset temperature threshold, the temperature regulating device 14 can be controlled to perform self-circulation of the heat exchange medium.

[0156] As some optional embodiments of the present application, the first preset temperature threshold may be a single value or a value range. As some optional embodiments of the present application, the first preset temperature threshold may be, but not limited to, any value between 4 degrees Celsius and 6 degrees Celsius, for example, the first preset temperature threshold may be, but not limited to, 4 degrees Celsius, 5 degrees Celsius, or 6 degrees Celsius.

[0157] As some optional embodiments of the present application, when the maximum battery temperature is less than or equal to the fifth preset temperature, if the absolute value of the difference between the maximum battery temperature and the minimum battery temperature is less than or equal to the second preset temperature threshold, the temperature control device 14 can be controlled to sleep.

[0158] As some optional embodiments of the present application, the second preset temperature threshold may be a single value or a value range. As some optional embodiments of the present application, the second preset temperature threshold may be, but not limited to, any value between 3 degrees Celsius and 5 degrees Celsius, for example, the second preset temperature threshold may be, but not limited to, 3 degrees Celsius, 4 degrees Celsius, or 5 degrees Celsius.

[0159] The first preset temperature threshold may be greater than the second preset temperature threshold.

[0160] In the above technical solution, the working state of the temperature regulating device 14 can be controlled according to the temperature difference between the highest battery temperature and the lowest battery temperature, which can make the thermal management logic of the present application more reasonable and enable safer and more reliable temperature management of the energy storage device 13.

[0161] According to some embodiments of the present application, Figure 3As shown, the first heat exchange device 15 includes a first drive pump and a first heat exchange fan, wherein, when the first heat exchange device 15 participates in heat exchange, the method further includes: if the temperature of the heat exchange medium is less than the fifth preset medium temperature, or the temperature regulating device 14 performs refrigeration work, then when the temperature in the energy storage device 13 is greater than the first preset temperature and less than or equal to the second preset temperature, or the temperature in the distribution box 11 is greater than the third preset temperature and less than or equal to the fourth preset temperature, the first heat exchange fan is controlled to be turned on at a first speed and to work according to a first preset duty cycle; when the temperature in the energy storage device 13 is greater than the second preset temperature and less than or equal to the fifth preset temperature, or the temperature in the distribution box 11 is greater than the fourth preset temperature and less than or equal to the sixth preset temperature, the first heat exchange fan is controlled to be turned on at a first speed and to work according to a first preset duty cycle; when the temperature in the energy storage device 13 is greater than the second preset temperature and less than or equal to the fifth preset temperature, or the temperature in the distribution box 11 is greater than the fourth preset temperature and less than or equal to the sixth preset temperature, The first driving pump is turned on, and the first heat exchange fan is controlled to be turned on at a second speed and to operate according to a second preset duty cycle, wherein the second speed is greater than the first speed, and the second preset duty cycle is greater than the first preset duty cycle; when the temperature in the energy storage device 13 is greater than the fifth preset temperature, or the temperature in the distribution box 11 is greater than the sixth preset temperature, the first driving pump is controlled to be turned on, and the first heat exchange fan is controlled to be turned on at a third speed and to operate according to a third preset duty cycle, wherein the third speed is greater than the second speed, and the third preset duty cycle is greater than the second preset duty cycle; when the temperature in the energy storage device 13 is less than or equal to the first preset temperature, and the temperature in the distribution box 11 is less than or equal to the third preset temperature, the first driving pump and the first heat exchange fan are controlled to be turned off respectively.

[0162] The first heat exchange device 15 may include a first driving pump and a first heat exchange fan. The first driving pump can be used to drive the heat exchange medium to flow into the second medium flow path of the first heat exchange device 15 to perform heat exchange with the distribution box 11. The first heat exchange fan can be arranged in the distribution box 11, or the first heat exchange fan can be arranged near the distribution box 11. The first heat exchange fan is suitable for blowing air toward the distribution box 11.

[0163] When the first heat exchange device 15 participates in heat exchange, and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature regulating device 14 is performing cooling work.

[0164] If the temperature inside the energy storage device 13 is greater than the first preset temperature and the temperature inside the energy storage device 13 is less than or equal to the second preset temperature, the control module can control the first heat exchange fan to start at a first speed to blow air toward the distribution box 11, and can control the first heat exchange fan to work according to a first preset duty cycle.

[0165] If the temperature inside the distribution box 11 is greater than the third preset temperature and the temperature inside the distribution box 11 is less than or equal to the fourth preset temperature, the control module can control the first heat exchange fan to turn on at a first speed to blow air toward the distribution box 11, and can control the first heat exchange fan to operate according to a first preset duty cycle, where the duty cycle refers to the proportion of the power-on time to the total time in a pulse cycle.

[0166] The fifth preset medium temperature, the first preset temperature, the second preset temperature, the third preset temperature, the fourth preset temperature, the first preset duty cycle, and the first rotation speed can all be preset.

[0167] The fifth preset medium temperature may be a single value or a range of values, the first preset temperature may be a single value or a range of values, the second preset temperature may be a single value or a range of values, the third preset temperature may be a single value or a range of values, and the fourth preset temperature may be a single value or a range of values. The first speed may be a single value or a range of values, and the first preset duty cycle may be a single percentage or a range of percentages.

[0168] As some optional embodiments of the present application, the fifth preset medium temperature can be but not limited to any value between 24 degrees Celsius and 26 degrees Celsius. For example, the fifth preset medium temperature can be but not limited to 24 degrees Celsius, 25 degrees Celsius, or 26 degrees Celsius.

[0169] As some optional embodiments of the present application, the first preset temperature may be but is not limited to any value between 39 degrees Celsius and 41 degrees Celsius. For example, the first preset temperature may be but is not limited to 39 degrees Celsius, 40 degrees Celsius, or 41 degrees Celsius.

[0170] As some optional embodiments of the present application, the second preset temperature may be, but is not limited to, any value between 59 degrees Celsius and 61 degrees Celsius. For example, the second preset temperature may be, but is not limited to, 59 degrees Celsius, 60 degrees Celsius, or 61 degrees Celsius.

[0171] As some optional embodiments of the present application, the third preset temperature may be but is not limited to any value between 39 degrees Celsius and 41 degrees Celsius. For example, the third preset temperature may be but is not limited to 39 degrees Celsius, 40 degrees Celsius, or 41 degrees Celsius.

[0172] As some optional embodiments of the present application, the fourth preset temperature may be, but is not limited to, any value between 59 degrees Celsius and 61 degrees Celsius. For example, the fourth preset temperature may be, but is not limited to, 59 degrees Celsius, 60 degrees Celsius, or 61 degrees Celsius.

[0173] As some optional embodiments of the present application, the first rotational speed may be, but is not limited to, any rotational speed between 900 r / min and 1100 r / min. For example, the first rotational speed may be, but is not limited to, 900 r / min, 1000 r / min, or 1100 r / min.

[0174] As some optional embodiments of the present application, the first preset duty cycle may be, but is not limited to, any percentage between 45% and 55%. For example, the first preset duty cycle may be, but is not limited to, 45%, 50%, or 55%.

[0175] When the first heat exchange device 15 participates in heat exchange, and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature regulating device 14 is performing cooling work.

[0176] If the temperature inside the energy storage device 13 is greater than the second preset temperature and the temperature inside the energy storage device 13 is less than or equal to the fifth preset temperature, the control module can control the first heat exchange fan to start at the second speed to blow air toward the distribution box 11, and can control the first heat exchange fan to work according to the second preset duty cycle, and can control the first drive pump to start.

[0177] If the temperature inside the distribution box 11 is greater than the fourth preset temperature and the temperature inside the distribution box 11 is less than or equal to the sixth preset temperature, the control module can control the first heat exchange fan to start at the second speed to blow air toward the distribution box 11, and can control the first heat exchange fan to work according to the second preset duty cycle, and can control the first drive pump to start.

[0178] The second speed is greater than the first speed, the second preset duty cycle is greater than the first preset duty cycle, and the fifth preset temperature, the sixth preset temperature, the second preset duty cycle, and the second speed can all be preset.

[0179] The fifth preset temperature may be a single value or a range of values, the sixth preset temperature may be a single value or a range of values, the second rotation speed may be a single value or a range of values, and the second preset duty cycle may be a single percentage or a range of percentages.

[0180] As some optional embodiments of the present application, the fifth preset temperature may be, but is not limited to, any value between 84 degrees Celsius and 86 degrees Celsius. For example, the fifth preset temperature may be, but is not limited to, 84 degrees Celsius, 85 degrees Celsius, or 86 degrees Celsius.

[0181] As some optional embodiments of the present application, the sixth preset temperature may be, but is not limited to, any value between 84 degrees Celsius and 86 degrees Celsius. For example, the sixth preset temperature may be, but is not limited to, 84 degrees Celsius, 85 degrees Celsius, or 86 degrees Celsius.

[0182] As some optional embodiments of the present application, the second rotational speed may be, but is not limited to, any rotational speed between 1900 r / min and 2100 r / min. For example, the second rotational speed may be, but is not limited to, 1900 r / min, 2000 r / min, or 2100 r / min.

[0183] As some optional embodiments of the present application, the second preset duty cycle may be, but is not limited to, any percentage between 75% and 85%. For example, the second preset duty cycle may be, but is not limited to, 75%, 80%, or 85%.

[0184] When the first heat exchange device 15 participates in heat exchange, and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature regulating device 14 is performing cooling work.

[0185] If the temperature inside the energy storage device 13 is greater than the fifth preset temperature, the control module can control the first heat exchange fan to start at the third speed to blow air toward the distribution box 11, and can control the first heat exchange fan to work according to the third preset duty cycle, and can control the first drive pump to start.

[0186] If the temperature inside the distribution box 11 is greater than the sixth preset temperature, the control module can control the first heat exchange fan to start at the third speed to blow air toward the distribution box 11, and can control the first heat exchange fan to work according to the third preset duty cycle, and can control the first drive pump to start.

[0187] The third speed is greater than the second speed, the third preset duty cycle is greater than the second preset duty cycle, and the third preset duty cycle and the third speed can be preset. The third speed can be a single value or a value range, and the third preset duty cycle can be a single percentage or a percentage range.

[0188] As some optional embodiments of the present application, the third speed may be but is not limited to any speed between 2900 r / min-3100 r / min, for example, the third speed may be but is not limited to 2900 r / min, 3000 r / min, 3100 r / min.

[0189] As some optional embodiments of the present application, the third preset duty cycle may be, but is not limited to, any percentage between 95% and 100%. For example, the third preset duty cycle may be, but is not limited to, 95%, 97%, or 100%.

[0190] When the first heat exchange device 15 participates in heat exchange, and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature regulating device 14 is performing cooling work.

[0191] If the temperature in the energy storage device 13 is less than or equal to the first preset temperature, and the temperature in the distribution box 11 is less than or equal to the third preset temperature, the control module can control the first heat exchange fan to turn off, and the control module can control the first drive pump to turn off.

[0192] In the above technical solution, when the first heat exchange device 15 participates in heat exchange and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature control device 14 is performing cooling work, the first heat exchange fan and the first drive pump can be controlled to operate according to the temperature in the energy storage device 13 and / or the temperature in the distribution box 11, so that the temperature of the distribution box 11 can be safely and reliably managed, and the temperature of the distribution box 11 can be kept within an appropriate temperature range.

[0193] According to some embodiments of the present application, Figure 3 As shown, when the temperature of the heat exchange medium is greater than or equal to the fifth preset medium temperature and the temperature regulating device 14 performs heating work, the method also includes: if the temperature in the energy storage device 13 is less than the seventh preset temperature, or the temperature in the distribution box 11 is less than the eighth preset temperature, then the first drive pump and the first heat exchange fan are controlled to be turned on respectively; if the temperature in the energy storage device 13 is greater than or equal to the seventh preset temperature, and the temperature in the distribution box 11 is greater than or equal to the eighth preset temperature, then the first drive pump and the first heat exchange fan are controlled to be turned off respectively.

[0194] Among them, when the first heat exchange device 15 participates in heat exchange, the temperature of the heat exchange medium is greater than or equal to the fifth preset medium temperature, and the temperature adjustment device 14 performs heating work.

[0195] If the temperature in the energy storage device 13 is lower than the seventh preset temperature, the first heat exchange fan can be controlled to start so as to blow air toward the distribution box 11, and the first driving pump can be controlled to start.

[0196] If the temperature in the distribution box 11 is lower than the eighth preset temperature, the first heat exchange fan can be controlled to be turned on to blow air toward the distribution box 11, and the first driving pump can be controlled to be turned on.

[0197] If the temperature in the energy storage device 13 is greater than or equal to the seventh preset temperature, and the temperature in the distribution box 11 is greater than or equal to the eighth preset temperature, the first heat exchange fan can be controlled to be turned off, and the control module can control the first driving pump to be turned off.

[0198] The seventh preset temperature and the eighth preset temperature can be preset. The seventh preset temperature can be a single value or a range of values, and the eighth preset temperature can be a single value or a range of values.

[0199] As some optional embodiments of the present application, the seventh preset temperature may be but is not limited to any value between -9 degrees Celsius and -11 degrees Celsius. For example, the seventh preset temperature may be but is not limited to -9 degrees Celsius, -10 degrees Celsius, or -11 degrees Celsius.

[0200] As some optional embodiments of the present application, the eighth preset temperature may be but is not limited to any value between -9 degrees Celsius and -11 degrees Celsius. For example, the eighth preset temperature may be but is not limited to -9 degrees Celsius, -10 degrees Celsius, or -11 degrees Celsius.

[0201] In the above technical solution, when the first heat exchange device 15 participates in heat exchange, and the temperature of the heat exchange medium is greater than or equal to the fifth preset medium temperature, and the temperature regulating device 14 performs heating work, the first heat exchange fan and the first drive pump can be controlled to work according to the temperature in the energy storage device 13 and / or the temperature in the distribution box 11, so that the temperature of the distribution box 11 can be safely and reliably managed, and it is beneficial to reduce the energy consumption of the energy storage box 100.

[0202] According to some embodiments of the present application, Figure 4 As shown, the second heat exchange device 16 includes a second heat exchange fan, and the method also includes: when the temperature in the main control box 12 is greater than the ninth preset temperature and less than or equal to the tenth preset temperature, controlling the second heat exchange fan to turn on at a fourth speed and to work according to a fourth preset duty cycle; when the temperature in the main control box 12 is greater than the tenth preset temperature and less than or equal to the eleventh preset temperature, controlling the second heat exchange fan to turn on at a fifth speed and to work according to a fifth preset duty cycle, wherein the fifth speed is greater than the fourth speed, and the fifth preset duty cycle is greater than the fourth preset duty cycle; when the temperature in the distribution box 11 is greater than the eleventh preset temperature, controlling the second heat exchange fan to turn on at a sixth speed and to work according to a sixth preset duty cycle, wherein the sixth speed is greater than the fifth speed, and the sixth preset duty cycle is greater than the fifth preset duty cycle; when the temperature in the main control box 12 is less than or equal to the ninth preset temperature, controlling the second heat exchange fan to turn off.

[0203] The second heat exchange device 16 may include a second heat exchange fan, which may be disposed in the main control box 12, or the second heat exchange fan may be disposed near the main control box 12, and the first heat exchange fan is suitable for blowing air toward the main control box 12.

[0204] If the temperature inside the main control box 12 is greater than the ninth preset temperature, and the temperature inside the main control box 12 is less than or equal to the tenth preset temperature, the second heat exchange fan can be controlled to turn on at a fourth speed to blow air toward the main control box 12, and the second heat exchange fan can be controlled to operate according to a fourth preset duty cycle.

[0205] The ninth preset temperature, the tenth preset temperature, the fourth preset duty cycle, and the fourth speed can all be pre-set. The ninth preset temperature can be a single value or a range of values, the tenth preset temperature can be a single value or a range of values, the fourth speed can be a single value or a range of values, and the fourth preset duty cycle can be a single percentage or a range of percentages.

[0206] As some optional embodiments of the present application, the ninth preset temperature may be but is not limited to any value between 40 degrees Celsius and 50 degrees Celsius. For example, the ninth preset temperature may be but is not limited to 40 degrees Celsius, 45 degrees Celsius, or 50 degrees Celsius.

[0207] As some optional embodiments of the present application, the tenth preset temperature may be but is not limited to any value between 55 degrees Celsius and 65 degrees Celsius. For example, the tenth preset temperature may be but is not limited to 55 degrees Celsius, 60 degrees Celsius, or 65 degrees Celsius.

[0208] As some optional embodiments of the present application, the fourth speed may be but is not limited to any speed between 900 r / min-1100 r / min, for example, the fourth speed may be but is not limited to 900 r / min, 1000 r / min, 1100 r / min.

[0209] As some optional embodiments of the present application, the fourth preset duty cycle may be but is not limited to any percentage between 45% and 55%. For example, the fourth preset duty cycle may be but is not limited to 45%, 50%, or 55%.

[0210] If the temperature in the main control box 12 is greater than the tenth preset temperature, and the temperature in the main control box 12 is less than or equal to the eleventh preset temperature, the second heat exchange fan can be controlled to start at the fifth speed to blow air toward the main control box 12, and the second heat exchange fan can be controlled to work according to the fifth preset duty cycle. The fifth speed is greater than the fourth speed, and the fifth preset duty cycle is greater than the fourth preset duty cycle.

[0211] The eleventh preset temperature, the fifth preset duty cycle, and the fifth speed can all be pre-set. The eleventh preset temperature can be a single value or a range of values, the fifth speed can be a single value or a range of values, and the fifth preset duty cycle can be a single percentage or a range of percentages.

[0212] As some optional embodiments of the present application, the eleventh preset temperature may be but is not limited to any value between 80 degrees Celsius and 90 degrees Celsius. For example, the eleventh preset temperature may be but is not limited to 80 degrees Celsius, 85 degrees Celsius, or 90 degrees Celsius.

[0213] As some optional embodiments of the present application, the fifth speed may be but is not limited to any speed between 1900 r / min-2100 r / min, for example, the fifth speed may be but is not limited to 1900 r / min, 2000 r / min, 2100 r / min.

[0214] As some optional embodiments of the present application, the fifth preset duty cycle may be any percentage between 75% and 85%, but not limited to, for example, the fifth preset duty cycle may be 75%, 80%, or 85%, but not limited to, it.

[0215] If the temperature in the main control box 12 is greater than the eleventh preset temperature, the second heat exchange fan can be controlled to start at the sixth speed to blow air toward the main control box 12, and the second heat exchange fan can be controlled to work according to the sixth preset duty cycle. The sixth speed is greater than the fifth speed, and the sixth preset duty cycle is greater than the fifth preset duty cycle.

[0216] The sixth preset duty cycle and the sixth speed can both be preset. The sixth speed can be a single value or a range of values, and the sixth preset duty cycle can be a single percentage or a range of percentages.

[0217] As some optional embodiments of the present application, the sixth speed may be but is not limited to any speed between 2900 r / min-3100 r / min, for example, the sixth speed may be but is not limited to 2900 r / min, 3000 r / min, 3100 r / min.

[0218] As some optional embodiments of the present application, the sixth preset duty cycle may be, but is not limited to, any percentage between 95% and 100%. For example, the sixth preset duty cycle may be, but is not limited to, 95%, 97%, or 100%.

[0219] If the temperature in the main control box 12 is less than or equal to the ninth preset temperature, the second heat exchange fan can be controlled to be turned off.

[0220] In the above technical solution, the operation of the second heat exchange fan can be controlled according to the temperature in the main control box 12, so that the temperature of the main control box 12 can be safely and reliably managed, and the temperature of the main control box 12 can be kept in an appropriate temperature range for a long time.

[0221] According to some embodiments of the present application, Figure 4 As shown, when the temperature in the main control box 12 is greater than the eleventh preset temperature, the method further includes: if the duration exceeds the first preset time, controlling the main control box 12 to perform over-temperature protection.

[0222] Among them, if the temperature in the main control box 12 is greater than the eleventh preset temperature, the second heat exchange fan can be controlled to start at the sixth speed to blow air toward the main control box 12, and the second heat exchange fan can be controlled to work according to the sixth preset duty cycle. If the temperature in the main control box 12 is greater than the eleventh preset temperature for a duration exceeding the first preset time, the main control box 12 can be controlled to perform over-temperature protection. As some optional embodiments of the present application, the over-temperature protection method can be to stop the main control box 12 from working when the temperature is greater than the eleventh preset temperature for a duration exceeding the first preset time.

[0223] As some optional embodiments of the present application, the main control box 12 can be connected to the energy storage device 13, and the connection method includes but is not limited to electrical connection, communication connection, etc. The main control box 12 can control the energy storage device 13. The number of main control boxes 12 can be the same as the number of energy storage devices 13, and the main control boxes 12 can be connected to the energy storage devices 13 in a one-to-one correspondence.

[0224] The first preset time can be preset. The first preset time can be a single value or a range of values. As some optional embodiments of the present application, the first preset time can be but not limited to any speed between 28min-32min, for example, the first preset time can be but not limited to 28min, 30min, 32min.

[0225] In the above technical solution, if the temperature inside the main control box 12 is greater than the eleventh preset temperature for a period of time exceeding the first preset time, the main control box 12 can be controlled to perform over-temperature protection, thereby reducing the probability of the main control box 12 being damaged due to excessive temperature for too long, and the probability of dangerous situations occurring can be reduced.

[0226] According to some embodiments of the present application, Figure 4 As shown, the second heat exchange device 16 also includes a second drive pump, wherein, when the second heat exchange device 16 participates in heat exchange, the method also includes: if the temperature in the main control box 12 is greater than the tenth preset temperature, controlling the second drive pump to start.

[0227] The second driving pump can be used to drive the heat exchange medium to flow into the third medium flow path of the second heat exchange device 16 to perform heat exchange with the main control box 12.

[0228] If the temperature in the main control box 12 is greater than the tenth preset temperature, the second driving pump can be controlled to start, so as to cool down the main control box 12 through the heat exchange medium.

[0229] In the above technical solution, when the temperature inside the main control box 12 is greater than the tenth preset temperature, the main control box 12 can be cooled by a heat exchange medium, thereby quickly reducing the temperature of the main control box 12 and allowing the temperature of the main control box 12 to remain in an appropriate temperature range for a long time.

[0230] According to some embodiments of the present application, Figure 1-Figure 4 As shown, the present application also provides a thermal management method for an energy storage box.

[0231] The energy storage box includes a distribution box, a main control box, an energy storage device, a temperature regulating device, a first heat exchange device and a second heat exchange device. The energy storage device has a first medium flow path. At least part of the first heat exchange device is arranged in the distribution box and exchanges heat with the distribution box. At least part of the second heat exchange device is arranged in the main control box and exchanges heat with the main control box. The temperature regulating device selectively heats or cools the heat exchange medium and selectively communicates with at least two of the first medium flow path, the first heat exchange device and the second heat exchange device to allow the heat exchange medium to flow into at least two of the first medium flow path, the first heat exchange device and the second heat exchange device.

[0232] The energy storage box has a box body, and the distribution box, the main control box and the energy storage device can all be arranged in the box body. The energy storage device has a first medium flow path, and a heat exchange medium flows in the first medium flow path.

[0233] At least part of the first heat exchange device is arranged in the distribution box. As some optional embodiments of the present application, part of the structure of the first heat exchange device is arranged in the distribution box. As some optional embodiments of the present application, the entire structure of the first heat exchange device is arranged in the distribution box. The first heat exchange device has a second medium flow path, and a heat exchange medium flows in the second medium flow path. The first heat exchange device can perform heat exchange with the distribution box to adjust the temperature of the distribution box so that the temperature of the distribution box is in an appropriate temperature range.

[0234] At least part of the second heat exchange device is arranged in the main control box. As some optional embodiments of the present application, part of the structure of the second heat exchange device is arranged in the main control box. As some optional embodiments of the present application, the entire structure of the second heat exchange device is arranged in the main control box. The second heat exchange device has a third medium flow path, and heat exchange medium flows in the third medium flow path. The second heat exchange device can perform heat exchange with the main control box to adjust the temperature of the main control box so that the temperature of the main control box is in an appropriate temperature range.

[0235] The temperature regulating device can heat the heat exchange medium, and the temperature regulating device can also cool the heat exchange medium. Moreover, the temperature regulating device can selectively communicate with at least two of the first medium flow path, the first heat exchange device, and the second heat exchange device to allow the heat exchange medium to flow into at least two of the first medium flow path, the first heat exchange device, and the second heat exchange device.

[0236] As an optional embodiment of the present application, the temperature regulating device can be connected to the first medium flow path and the first heat exchange device to allow the heat exchange medium to flow into the first medium flow path and the first heat exchange device.

[0237] As an optional embodiment of the present application, the temperature regulating device can be connected to the first medium flow path and the second heat exchange device to allow the heat exchange medium to flow into the first medium flow path and the second heat exchange device.

[0238] As an optional embodiment of the present application, the temperature regulating device can be connected to the first heat exchange device and the second heat exchange device so that the heat exchange medium flows into the first heat exchange device and the second heat exchange device.

[0239] As an optional embodiment of the present application, the temperature control device can be connected to the first medium flow path, the first heat exchange device, and the second heat exchange device to allow the heat exchange medium to flow into the first medium flow path, the first heat exchange device, and the second heat exchange device.

[0240] As some optional embodiments of the present application, Figure 6 As shown, the temperature regulating device, the first medium flow path, the second medium flow path and the third medium flow path can be connected in sequence to form a medium circulation flow path.

[0241] As some optional embodiments of the present application, Figure 7 As shown, the number of temperature regulating devices can be set to two, one of which can be connected to the first medium flow path to form a first medium circulation flow path, and the other temperature regulating device, the second medium flow path and the third medium flow path can be connected in sequence to form a second medium circulation flow path.

[0242] As some optional embodiments of the present application, Figure 8 As shown, the temperature regulating device can be connected to the first medium flow path to form a third medium circulation flow path, and the temperature regulating device, the second medium flow path and the third medium flow path can be connected in sequence to form a fourth medium circulation flow path.

[0243] As some optional embodiments of the present application, Fig. 9 As shown, the temperature regulating device can be connected to the second medium flow path to form a fifth medium circulation flow path, and the temperature regulating device, the first medium flow path and the third medium flow path can be connected in sequence to form a sixth medium circulation flow path.

[0244] As some optional embodiments of the present application, Fig.10 As shown, the temperature regulating device can be connected to the third medium flow path to form a seventh medium circulation flow path, and the temperature regulating device, the first medium flow path and the second medium flow path can be connected in sequence to form an eighth medium circulation flow path.

[0245] As some optional embodiments of the present application, Fig.11 As shown, the temperature regulating device can be connected to the first medium flow path to form a ninth medium circulation flow path, the temperature regulating device can be connected to the second medium flow path to form a tenth medium circulation flow path, and the temperature regulating device can be connected to the third medium flow path to form an eleventh medium circulation flow path.

[0246] It needs to be explained that Figure 6-Figure 11 The embodiments shown are only exemplary and do not limit the application to Figure 6-Figure 11 In the embodiment shown, for example, Figure 6 The connectivity and Fig.11 The connection modes are combined to form a new embodiment, that is, the temperature regulating device, the first medium flow path, the second medium flow path and the third medium flow path can be connected in sequence to form a medium circulation flow path, and the temperature regulating device can be connected with the first medium flow path to form a medium circulation flow path, the temperature regulating device can be connected with the second medium flow path to form a medium circulation flow path, and the temperature regulating device can be connected with the third medium flow path to form a medium circulation flow path.

[0247] As some optional embodiments of the present application, the number of energy storage devices can be set to multiple, for example, the number of energy storage devices can be set to but not limited to 3, 4, 5, 6, etc., the first medium flow paths of multiple energy storage devices can be set in series, and the first medium flow paths of multiple energy storage devices can also be set in parallel.

[0248] As some optional embodiments of the present application, the first heat exchange device may include: a first heat exchange element, the first heat exchange element may have a second medium flow path, and the first heat exchange element may be attached to the distribution box.

[0249] As some optional embodiments of the present application, the second heat exchange device may include: a second heat exchange element, the second heat exchange element may have a third medium flow path, and the second heat exchange element may be attached to the main control box.

[0250] The thermal management method of the energy storage tank includes the following steps:

[0251] S1, obtain the temperature information of the battery in the energy storage device, and obtain the temperature of the heat exchange medium. Among them, as some optional embodiments of the present application, the control device can determine whether the temperature control device is faulty. If the temperature control device is faulty, the control device can report the fault level by means of, but not limited to, voice, light, etc., and the control device can selectively control the energy storage box to stop working according to the fault level. If the temperature control device is not faulty, the control device can obtain the temperature information of the battery in the energy storage device, and the control device can obtain the temperature of the heat exchange medium.

[0252] S2, controlling the temperature regulating device according to the temperature information and the temperature of the heat exchange medium to regulate at least one of the temperature in the energy storage device, the temperature in the distribution box, and the temperature in the main control box. The control device can control the temperature regulating device according to the acquired temperature information of the battery in the energy storage device and the temperature of the heat exchange medium, so that the temperature regulating device heats the heat exchange medium, cools the heat exchange medium, or neither heats nor cools the heat exchange medium, so as to control the temperature of the heat exchange medium, so as to regulate at least one of the temperature in the energy storage device, the temperature in the distribution box, and the temperature in the main control box.

[0253] In the above technical solution, at least one of the temperature inside the energy storage device, the temperature inside the distribution box and the temperature inside the main control box can be selectively adjusted, and the temperature of the distribution box, the main control box and the energy storage device can be safely and reliably managed, which is beneficial to improving the safety of use of the energy storage box and reducing the energy consumption of the energy storage box.

[0254] According to some embodiments of the present application, the temperature control device is controlled according to temperature information and the temperature of the heat exchange medium, including: determining at least one of the maximum battery temperature and the minimum battery temperature according to the temperature information; controlling the temperature control device according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium.

[0255] Among them, the control device can obtain the temperature information of the batteries in the energy storage device and the temperature of the heat exchange medium, and the control device can determine at least one of the maximum battery temperature and the minimum battery temperature based on the temperature information of the batteries in the energy storage device. It can be understood that the number of batteries in the energy storage device can be multiple, for example, the number of batteries in the energy storage device can be but not limited to 3, 4, 5, 6, etc., and the control device can control the temperature control device based on at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium.

[0256] As some optional embodiments of the present application, the temperature regulating device may be controlled according to the maximum battery temperature and the temperature of the heat exchange medium. As some optional embodiments of the present application, the temperature regulating device may be controlled according to the minimum battery temperature and the temperature of the heat exchange medium. As some optional embodiments of the present application, the temperature regulating device may be controlled according to the maximum battery temperature, the minimum battery temperature and the temperature of the heat exchange medium.

[0257] In the above technical solution, the temperature control device can be controlled according to multiple parameters, so that the temperature of the distribution box, the main control box and the energy storage device can be managed safely and reliably.

[0258] According to some embodiments of the present application, the temperature control device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, including: when the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the first preset medium temperature, controlling the temperature control device to perform heating until the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, wherein the second preset medium temperature is greater than the first preset medium temperature.

[0259] Among them, the control device can obtain the temperature information of the battery in the energy storage device and determine the minimum battery temperature according to the temperature information of the battery in the energy storage device. When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the first preset medium temperature, the control device can control the temperature regulating device to perform heating work, so that the temperature regulating device heats the heat exchange medium to increase the temperature of the heat exchange medium to be greater than or equal to the second preset medium temperature to adjust the battery temperature. The first preset battery temperature, the first preset medium temperature, and the second preset medium temperature can all be preset. The first preset battery temperature can be a single value or a range of values, the first preset medium temperature can be a single value or a range of values, and the second preset medium temperature can be a single value or a range of values.

[0260] As some optional embodiments of the present application, the first preset battery temperature may be but is not limited to any value between 15 degrees Celsius and 17 degrees Celsius. For example, the first preset battery temperature may be but is not limited to 15 degrees Celsius, 16 degrees Celsius, or 17 degrees Celsius.

[0261] As some optional embodiments of the present application, the first preset medium temperature can be but not limited to any value between 29 degrees Celsius and 31 degrees Celsius. For example, the first preset medium temperature can be but not limited to 29 degrees Celsius, 30 degrees Celsius, or 31 degrees Celsius.

[0262] As some optional embodiments of the present application, the second preset medium temperature can be but not limited to any value between 39 degrees Celsius and 41 degrees Celsius. For example, the second preset medium temperature can be but not limited to 39 degrees Celsius, 40 degrees Celsius, or 41 degrees Celsius.

[0263] In the above technical solution, the temperature control device can be used to perform heating according to the minimum battery temperature and the temperature of the heat exchange medium to increase the temperature of the heat exchange medium, so that the battery temperature can be increased and regulated when the battery temperature is too low to increase the battery temperature, which is beneficial to reduce the time the battery works at low temperature and to increase the service life of the battery.

[0264] According to some embodiments of the present application, Figure 2As shown, the temperature regulating device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than the first preset medium temperature and less than the second preset medium temperature, then when the temperature regulating device is performing heating work, the temperature regulating device is controlled to maintain heating work; when the temperature regulating device is not performing heating work, the temperature regulating device is controlled to perform heat exchange medium self-circulation work.

[0265] Among them, the temperature information of the battery in the energy storage device can be obtained and the minimum battery temperature can be determined according to the temperature information of the battery in the energy storage device. When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than the first preset medium temperature and less than the second preset medium temperature, and the temperature regulating device is performing heating work, the temperature regulating device can be controlled to maintain heating work to adjust the battery temperature.

[0266] When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than the first preset medium temperature and less than the second preset medium temperature, and the temperature control device is not performing heating work, the temperature control device can be controlled to perform self-circulation of the heat exchange medium to adjust the battery temperature.

[0267] Self-circulation operation can be understood as making the heat exchange medium circulate but not heating or cooling the heat exchange medium.

[0268] In the above technical solution, when the minimum battery temperature is less than or equal to the first preset battery temperature, the temperature control device can be controlled according to the temperature of the heat exchange medium and the current working state of the temperature control device, which is beneficial to improve the rationality of the control logic, enable the battery to be in a suitable temperature range for a long time, and help reduce the energy consumption of the energy storage box.

[0269] According to some embodiments of the present application, Figure 2 As shown, the temperature control device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than or equal to the first preset medium temperature, the temperature control device is controlled to perform self-circulation of the heat exchange medium.

[0270] Among them, the temperature information of the battery in the energy storage device can be obtained and the minimum battery temperature can be determined according to the temperature information of the battery in the energy storage device. When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than or equal to the first preset medium temperature, the temperature regulating device can be controlled to perform self-circulation of the heat exchange medium to regulate the battery temperature.

[0271] In the above technical solution, when the minimum battery temperature is less than or equal to the first preset battery temperature, the temperature regulating device can be controlled according to the temperature of the heat exchange medium to perform self-circulation of the heat exchange medium, thereby reducing the energy consumption of the energy storage box while meeting the battery temperature control requirements, which is conducive to improving the rationality of the control logic.

[0272] According to some embodiments of the present application, Figure 2 As shown, the temperature regulating device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, including: when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature regulating device performs heating operation, then when the temperature of the heat exchange medium is less than the second preset medium temperature, the temperature regulating device is controlled to maintain heating operation; when the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature regulating device is controlled to perform heat exchange medium self-circulation operation.

[0273] The temperature information of the battery in the energy storage device may be obtained and the lowest battery temperature may be determined according to the temperature information of the battery in the energy storage device.

[0274] When the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature control device is currently performing heating work and the current temperature of the heat exchange medium is less than the second preset medium temperature, the temperature control device can be controlled to continue the heating work, that is, the temperature control device can be controlled to maintain the current working mode.

[0275] When the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature control device is currently performing heating work and the current temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature control device can be controlled to perform self-circulation of the heat exchange medium.

[0276] The second preset battery temperature is greater than the first preset battery temperature. The second preset battery temperature can be preset. The second preset battery temperature can be a single value or a range of values.

[0277] As some optional embodiments of the present application, the second preset battery temperature may be but is not limited to any value between 17 degrees Celsius and 19 degrees Celsius. For example, the second preset battery temperature may be but is not limited to 17 degrees Celsius, 18 degrees Celsius, or 19 degrees Celsius.

[0278] In the above technical solution, when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, and the temperature control device performs heating work, the temperature control device can be controlled according to the temperature of the heat exchange medium, which is beneficial to improve the rationality of the control logic, enable the battery to be in a suitable temperature range for a long time, and help reduce the energy consumption of the energy storage box.

[0279] According to some embodiments of the present application, Figure 2 As shown, when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, the method also includes: if the temperature control device is not performing heating work, then when the temperature control device is performing self-circulation of the heat exchange medium, controlling the temperature control device to maintain the self-circulation of the heat exchange medium; when the temperature control device is not performing self-circulation of the heat exchange medium, controlling the temperature control device to sleep.

[0280] The temperature information of the battery in the energy storage device may be obtained and the lowest battery temperature may be determined according to the temperature information of the battery in the energy storage device.

[0281] When the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature control device is not performing heating work and the current temperature control device is performing self-circulation of the heat exchange medium, the temperature control device can be controlled to perform self-circulation of the heat exchange medium, that is, the temperature control device can be controlled to maintain the current working mode.

[0282] When the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature control device is not performing heating work and the current temperature control device is not performing self-circulation of the heat exchange medium, the temperature control device can be controlled to sleep, that is, the temperature control device can be controlled to stop working.

[0283] In the above technical solution, when the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, and the temperature control device is not performing heating work, the temperature control device can be controlled according to the current working mode of the temperature control device, which is beneficial to improve the rationality of the control logic and reduce the energy consumption of the energy storage box.

[0284] According to some embodiments of the present application, Figure 2As shown, the temperature control device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, including: when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, then when the temperature of the heat exchange medium is greater than or equal to the third preset medium temperature, the temperature control device is controlled to perform cooling work until the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, wherein the third preset medium temperature is greater than the fourth preset medium temperature, and the third preset battery temperature is greater than the second preset battery temperature.

[0285] The temperature information of the batteries in the energy storage device may be obtained, and the minimum battery temperature and the maximum battery temperature may be determined according to the temperature information of the batteries in the energy storage device.

[0286] When the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, and the temperature of the heat exchange medium is greater than or equal to the third preset medium temperature, the temperature regulating device can be controlled to perform refrigeration so that the temperature regulating device refrigerates the heat exchange medium to reduce the temperature of the heat exchange medium to less than or equal to the fourth preset medium temperature to adjust the battery temperature. The third preset battery temperature, the fourth preset battery temperature, the third preset medium temperature, and the fourth preset medium temperature can all be preset. The third preset battery temperature can be a single value or a range of values, the fourth preset battery temperature can be a single value or a range of values, the third preset medium temperature can be a single value or a range of values, and the fourth preset medium temperature can be a single value or a range of values.

[0287] As some optional embodiments of the present application, the third preset battery temperature may be but is not limited to any value between 19 degrees Celsius and 21 degrees Celsius. For example, the third preset battery temperature may be but is not limited to 19 degrees Celsius, 20 degrees Celsius, or 21 degrees Celsius.

[0288] As some optional embodiments of the present application, the fourth preset battery temperature may be but is not limited to any value between 23 degrees Celsius and 25 degrees Celsius. For example, the fourth preset battery temperature may be but is not limited to 23 degrees Celsius, 24 degrees Celsius, or 25 degrees Celsius.

[0289] As some optional embodiments of the present application, the third preset medium temperature can be but not limited to any value between 20 degrees Celsius and 22 degrees Celsius. For example, the third preset medium temperature can be but not limited to 20 degrees Celsius, 21 degrees Celsius, or 22 degrees Celsius.

[0290] As some optional embodiments of the present application, the fourth preset medium temperature can be but not limited to any value between 9 degrees Celsius and 11 degrees Celsius. For example, the fourth preset medium temperature can be but not limited to 9 degrees Celsius, 10 degrees Celsius, or 11 degrees Celsius.

[0291] The fourth preset battery temperature may be greater than the third preset battery temperature.

[0292] In the above technical solution, the temperature control device can be used to perform refrigeration according to the minimum battery temperature, the maximum battery temperature and the temperature of the heat exchange medium to reduce the temperature of the heat exchange medium, so that the battery can be cooled and regulated when the battery temperature is too high to reduce the battery temperature, which is beneficial to reduce the time the battery works at high temperature and to increase the service life of the battery.

[0293] According to some embodiments of the present application, Figure 2 As shown, the temperature control device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, then when the temperature of the heat exchange medium is less than the third preset medium temperature and greater than the fourth preset medium temperature, if the temperature control device performs cooling work, the temperature control device is controlled to maintain cooling work; if the temperature control device performs cooling work, the temperature control device is controlled to perform heat exchange medium self-circulation work; wherein the third preset battery temperature is greater than the second preset battery temperature.

[0294] The temperature information of the batteries in the energy storage device may be obtained, and the minimum battery temperature and the maximum battery temperature may be determined according to the temperature information of the batteries in the energy storage device.

[0295] When the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, the maximum battery temperature is greater than the fourth preset battery temperature, the temperature of the heat exchange medium is less than the third preset medium temperature and greater than the fourth preset medium temperature, and the temperature control device is performing cooling operation, the temperature control device can be controlled to maintain cooling operation to lower the temperature of the heat exchange medium.

[0296] When the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, the maximum battery temperature is greater than the fourth preset battery temperature, the temperature of the heat exchange medium is less than the third preset medium temperature and greater than the fourth preset medium temperature, and the temperature control device is performing cooling work, the temperature control device can be controlled to perform self-circulation of the heat exchange medium to adjust the battery temperature.

[0297] In the above technical scheme, the temperature control device can be controlled according to the minimum battery temperature, the maximum battery temperature and the temperature of the heat exchange medium, so that the temperature control device maintains cooling operation or the temperature control device performs self-circulation of the heat exchange medium, which is beneficial to improve the rationality of the control logic, can keep the battery in a suitable temperature range for a long time, and is beneficial to reduce the energy consumption of the energy storage box.

[0298] According to some embodiments of the present application, Figure 2 As shown, the temperature control device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature control device is controlled to perform self-circulation of the heat exchange medium.

[0299] Among them, when the lowest battery temperature is greater than the third preset battery temperature and the highest battery temperature is greater than the fourth preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature control device can be controlled to perform self-circulation of the heat exchange medium to adjust the battery temperature.

[0300] In the above technical solution, when the minimum battery temperature is greater than the third preset battery temperature and the maximum battery temperature is greater than the fourth preset battery temperature, the temperature regulating device can be controlled according to the temperature of the heat exchange medium to perform self-circulation of the heat exchange medium, which is beneficial to improve the rationality of the control logic and reduce the energy consumption of the energy storage box.

[0301] According to some embodiments of the present application, Figure 2 As shown, the temperature control device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature, and the temperature of the heat exchange medium, and also includes: when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is less than or equal to the third preset battery temperature, or the maximum battery temperature is less than or equal to the fourth preset battery temperature, then when the maximum battery temperature is greater than the fifth preset temperature, if the temperature control device performs cooling work, then when the temperature of the heat exchange medium is greater than the fourth preset medium temperature, the temperature control device is controlled to maintain cooling work; when the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature control device is controlled to perform heat exchange medium self-circulation work; wherein, the third preset battery temperature is greater than the second preset battery temperature, and the fifth preset battery temperature is less than the fourth preset battery temperature.

[0302] Among them, when the lowest battery temperature is greater than the second preset battery temperature, if the lowest battery temperature is less than or equal to the third preset battery temperature or the highest battery temperature is less than or equal to the fourth preset battery temperature, and the highest battery temperature is greater than the fifth preset temperature, and the temperature regulating device performs cooling work, then if the temperature of the heat exchange medium is greater than the fourth preset medium temperature, the temperature regulating device can be controlled to continue to maintain cooling work to reduce the temperature of the heat exchange medium.

[0303] When the lowest battery temperature is greater than the second preset battery temperature, if the lowest battery temperature is less than or equal to the third preset battery temperature or the highest battery temperature is less than or equal to the fourth preset battery temperature, and the highest battery temperature is greater than the fifth preset temperature, and the temperature regulating device performs cooling work, then if the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature regulating device can be controlled to perform heat exchange medium self-circulation work to adjust the battery temperature.

[0304] The fifth preset battery temperature may be a single value or a range of values. As some optional embodiments of the present application, the fifth preset battery temperature may be, but is not limited to, any value between 20 degrees Celsius and 22 degrees Celsius, for example, the fifth preset battery temperature may be, but is not limited to, 20 degrees Celsius, 21 degrees Celsius, or 22 degrees Celsius.

[0305] In the above technical solution, when the minimum battery temperature is greater than the second preset battery temperature, the temperature control device can be controlled according to the minimum battery temperature, the maximum battery temperature and the temperature of the heat exchange medium, so that the temperature control device maintains cooling operation or the temperature control device performs self-circulation of the heat exchange medium, thereby safely and reliably managing the temperature of the energy storage device.

[0306] According to some embodiments of the present application, Figure 2 As shown, when the maximum battery temperature is greater than the fifth preset temperature, the method also includes: if the temperature device is not performing cooling work, then when the temperature control device is performing self-circulation of the heat exchange medium, controlling the temperature control device to maintain the self-circulation of the heat exchange medium; when the temperature control device is not performing self-circulation of the heat exchange medium, controlling the temperature control device to sleep.

[0307] Among them, when the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is less than or equal to the third preset battery temperature or the maximum battery temperature is less than or equal to the fourth preset battery temperature, and the maximum battery temperature is greater than the fifth preset temperature, and the temperature control device is not performing cooling work, then when the temperature control device is performing self-circulation of the heat exchange medium, the temperature control device is controlled to keep the heat exchange medium in self-circulation operation.

[0308] When the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is less than or equal to the third preset battery temperature or the maximum battery temperature is less than or equal to the fourth preset battery temperature, and the maximum battery temperature is greater than the fifth preset temperature, and the temperature control device is not performing cooling work, then when the temperature control device is not performing self-circulation of the heat exchange medium, the temperature control device is controlled to stop working.

[0309] In the above technical solution, when the maximum battery temperature is greater than the fifth preset temperature, the temperature control device can be controlled to perform self-circulation of the heat exchange medium or sleep according to the current working state of the temperature control device, thereby taking into account both temperature control management and reducing energy consumption.

[0310] According to some embodiments of the present application, Figure 2 As shown, when the maximum battery temperature is greater than the fifth preset temperature, the method further includes: if the temperature difference between the maximum battery temperature and the minimum battery temperature is greater than the first preset temperature threshold, controlling the temperature regulating device to perform self-circulation of the heat exchange medium.

[0311] Among them, when the maximum battery temperature is greater than the fifth preset temperature, if the absolute value of the difference between the maximum battery temperature and the minimum battery temperature is greater than the first preset temperature threshold, the temperature regulating device can be controlled to perform self-circulation of the heat exchange medium.

[0312] As some optional embodiments of the present application, the first preset temperature threshold may be a single value or a value range. As some optional embodiments of the present application, the first preset temperature threshold may be, but not limited to, any value between 4 degrees Celsius and 6 degrees Celsius, for example, the first preset temperature threshold may be, but not limited to, 4 degrees Celsius, 5 degrees Celsius, or 6 degrees Celsius.

[0313] As some optional embodiments of the present application, when the maximum battery temperature is greater than the fifth preset temperature, if the absolute value of the difference between the maximum battery temperature and the minimum battery temperature is less than or equal to the second preset temperature threshold, the temperature regulating device can be controlled to sleep.

[0314] As some optional embodiments of the present application, the second preset temperature threshold may be a single value or a value range. As some optional embodiments of the present application, the second preset temperature threshold may be, but not limited to, any value between 3 degrees Celsius and 5 degrees Celsius, for example, the second preset temperature threshold may be, but not limited to, 3 degrees Celsius, 4 degrees Celsius, or 5 degrees Celsius.

[0315] The first preset temperature threshold may be greater than the second preset temperature threshold.

[0316] In the above technical solution, the working state of the temperature regulating device can be controlled according to the temperature difference between the highest battery temperature and the lowest battery temperature, which can make the thermal management logic of the present application more reasonable and enable safer and more reliable temperature management of the energy storage device.

[0317] According to some embodiments of the present application, Figure 3 As shown, the first heat exchange device includes a first driving pump and a first heat exchange fan, wherein, when the first heat exchange device participates in heat exchange, the method further includes: if the temperature of the heat exchange medium is less than a fifth preset medium temperature, or the temperature regulating device performs refrigeration work, then when the temperature in the energy storage device is greater than the first preset temperature and less than or equal to the second preset temperature, or the temperature in the distribution box is greater than the third preset temperature and less than or equal to the fourth preset temperature, the first heat exchange fan is controlled to be turned on at a first speed and to work according to a first preset duty cycle; when the temperature in the energy storage device is greater than the second preset temperature and less than or equal to the fifth preset temperature, or the temperature in the distribution box is greater than the fourth preset temperature and less than or equal to the sixth preset temperature, the first driving pump .... The first drive pump is turned on, and the first heat exchange fan is controlled to be turned on at a second speed and to operate according to a second preset duty cycle, wherein the second speed is greater than the first speed, and the second preset duty cycle is greater than the first preset duty cycle; when the temperature in the energy storage device is greater than the fifth preset temperature, or the temperature in the distribution box is greater than the sixth preset temperature, the first drive pump is controlled to be turned on, and the first heat exchange fan is controlled to be turned on at a third speed and to operate according to a third preset duty cycle, wherein the third speed is greater than the second speed, and the third preset duty cycle is greater than the second preset duty cycle; when the temperature in the energy storage device is less than or equal to the first preset temperature, and the temperature in the distribution box is less than or equal to the third preset temperature, the first drive pump and the first heat exchange fan are controlled to be turned off respectively.

[0318] The first heat exchange device may include a first drive pump and a first heat exchange fan. The first drive pump can be used to drive the heat exchange medium to flow into the second medium flow path of the first heat exchange device to perform heat exchange with the distribution box. The first heat exchange fan can be arranged in the distribution box, or the first heat exchange fan can be arranged near the distribution box. The first heat exchange fan is suitable for blowing air toward the distribution box.

[0319] When the first heat exchange device participates in heat exchange, and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature regulating device is performing refrigeration work.

[0320] If the temperature inside the energy storage device is greater than the first preset temperature and the temperature inside the energy storage device is less than or equal to the second preset temperature, the first heat exchange fan can be controlled to start at a first speed to blow air toward the distribution box, and the first heat exchange fan can be controlled to operate according to a first preset duty cycle.

[0321] If the temperature inside the distribution box is greater than the third preset temperature and the temperature inside the distribution box is less than or equal to the fourth preset temperature, the first heat exchange fan can be controlled to turn on at a first speed to blow air toward the distribution box, and the first heat exchange fan can be controlled to operate according to a first preset duty cycle, where the duty cycle refers to the proportion of the power-on time to the total time in a pulse cycle.

[0322] The fifth preset medium temperature, the first preset temperature, the second preset temperature, the third preset temperature, the fourth preset temperature, the first preset duty cycle, and the first rotation speed can all be preset.

[0323] The fifth preset medium temperature may be a single value or a range of values, the first preset temperature may be a single value or a range of values, the second preset temperature may be a single value or a range of values, the third preset temperature may be a single value or a range of values, and the fourth preset temperature may be a single value or a range of values. The first speed may be a single value or a range of values, and the first preset duty cycle may be a single percentage or a range of percentages.

[0324] As some optional embodiments of the present application, the fifth preset medium temperature can be but not limited to any value between 24 degrees Celsius and 26 degrees Celsius. For example, the fifth preset medium temperature can be but not limited to 24 degrees Celsius, 25 degrees Celsius, or 26 degrees Celsius.

[0325] As some optional embodiments of the present application, the first preset temperature may be but is not limited to any value between 39 degrees Celsius and 41 degrees Celsius. For example, the first preset temperature may be but is not limited to 39 degrees Celsius, 40 degrees Celsius, or 41 degrees Celsius.

[0326] As some optional embodiments of the present application, the second preset temperature may be, but is not limited to, any value between 59 degrees Celsius and 61 degrees Celsius. For example, the second preset temperature may be, but is not limited to, 59 degrees Celsius, 60 degrees Celsius, or 61 degrees Celsius.

[0327] As some optional embodiments of the present application, the third preset temperature may be but is not limited to any value between 39 degrees Celsius and 41 degrees Celsius. For example, the third preset temperature may be but is not limited to 39 degrees Celsius, 40 degrees Celsius, or 41 degrees Celsius.

[0328] As some optional embodiments of the present application, the fourth preset temperature may be, but is not limited to, any value between 59 degrees Celsius and 61 degrees Celsius. For example, the fourth preset temperature may be, but is not limited to, 59 degrees Celsius, 60 degrees Celsius, or 61 degrees Celsius.

[0329] As some optional embodiments of the present application, the first rotational speed may be, but is not limited to, any rotational speed between 900 r / min and 1100 r / min. For example, the first rotational speed may be, but is not limited to, 900 r / min, 1000 r / min, or 1100 r / min.

[0330] As some optional embodiments of the present application, the first preset duty cycle may be, but is not limited to, any percentage between 45% and 55%. For example, the first preset duty cycle may be, but is not limited to, 45%, 50%, or 55%.

[0331] When the first heat exchange device participates in heat exchange, and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature regulating device is performing refrigeration work.

[0332] If the temperature inside the energy storage device is greater than the second preset temperature and the temperature inside the energy storage device is less than or equal to the fifth preset temperature, the first heat exchange fan can be controlled to start at the second speed to blow air toward the distribution box, and the first heat exchange fan can be controlled to work according to the second preset duty cycle, and the first drive pump can be controlled to start.

[0333] If the temperature inside the distribution box is greater than the fourth preset temperature and the temperature inside the distribution box is less than or equal to the sixth preset temperature, the first heat exchange fan can be controlled to start at the second speed to blow air toward the distribution box, and the first heat exchange fan can be controlled to work according to the second preset duty cycle, and the first drive pump can be controlled to start.

[0334] The second speed is greater than the first speed, the second preset duty cycle is greater than the first preset duty cycle, and the fifth preset temperature, the sixth preset temperature, the second preset duty cycle, and the second speed can all be preset.

[0335] The fifth preset temperature may be a single value or a range of values, the sixth preset temperature may be a single value or a range of values, the second rotation speed may be a single value or a range of values, and the second preset duty cycle may be a single percentage or a range of percentages.

[0336] As some optional embodiments of the present application, the fifth preset temperature may be, but is not limited to, any value between 84 degrees Celsius and 86 degrees Celsius. For example, the fifth preset temperature may be, but is not limited to, 84 degrees Celsius, 85 degrees Celsius, or 86 degrees Celsius.

[0337] As some optional embodiments of the present application, the sixth preset temperature may be, but is not limited to, any value between 84 degrees Celsius and 86 degrees Celsius. For example, the sixth preset temperature may be, but is not limited to, 84 degrees Celsius, 85 degrees Celsius, or 86 degrees Celsius.

[0338] As some optional embodiments of the present application, the second rotational speed may be, but is not limited to, any rotational speed between 1900 r / min and 2100 r / min. For example, the second rotational speed may be, but is not limited to, 1900 r / min, 2000 r / min, or 2100 r / min.

[0339] As some optional embodiments of the present application, the second preset duty cycle may be, but is not limited to, any percentage between 75% and 85%. For example, the second preset duty cycle may be, but is not limited to, 75%, 80%, or 85%.

[0340] When the first heat exchange device participates in heat exchange, and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature regulating device is performing refrigeration work.

[0341] If the temperature inside the energy storage device is greater than the fifth preset temperature, the control module can control the first heat exchange fan to start at the third speed to blow air toward the distribution box, and can control the first heat exchange fan to work according to the third preset duty cycle, and can control the first drive pump to start.

[0342] If the temperature inside the distribution box is greater than the sixth preset temperature, the control module can control the first heat exchange fan to start at the third speed to blow air toward the distribution box, and can control the first heat exchange fan to work according to the third preset duty cycle, and can control the first drive pump to start.

[0343] The third speed is greater than the second speed, the third preset duty cycle is greater than the second preset duty cycle, and the third preset duty cycle and the third speed can be preset. The third speed can be a single value or a value range, and the third preset duty cycle can be a single percentage or a percentage range.

[0344] As some optional embodiments of the present application, the third speed may be but is not limited to any speed between 2900 r / min-3100 r / min, for example, the third speed may be but is not limited to 2900 r / min, 3000 r / min, 3100 r / min.

[0345] As some optional embodiments of the present application, the third preset duty cycle may be, but is not limited to, any percentage between 95% and 100%. For example, the third preset duty cycle may be, but is not limited to, 95%, 97%, or 100%.

[0346] When the first heat exchange device participates in heat exchange, and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature regulating device is performing refrigeration work.

[0347] If the temperature in the energy storage device is less than or equal to the first preset temperature, and the temperature in the distribution box is less than or equal to the third preset temperature, the first heat exchange fan can be controlled to be turned off, and the first drive pump can be controlled to be turned off.

[0348] In the above technical solution, when the first heat exchange device participates in heat exchange and the temperature of the heat exchange medium is lower than the fifth preset medium temperature or the temperature control device is performing cooling work, the first heat exchange fan and the first drive pump can be controlled to operate according to the temperature in the energy storage device and / or the temperature in the distribution box, so that the temperature of the distribution box can be safely and reliably managed, and the temperature of the distribution box can be kept within an appropriate temperature range.

[0349] According to some embodiments of the present application, Figure 3 As shown, when the temperature of the heat exchange medium is greater than or equal to the fifth preset medium temperature and the temperature control device is performing heating work, the method also includes: if the temperature in the energy storage device is less than the seventh preset temperature, or the temperature in the distribution box is less than the eighth preset temperature, then controlling the first drive pump and the first heat exchange fan to be turned on respectively; if the temperature in the energy storage device is greater than or equal to the seventh preset temperature, and the temperature in the distribution box is greater than or equal to the eighth preset temperature, then controlling the first drive pump and the first heat exchange fan to be turned off respectively.

[0350] Among them, when the first heat exchange device participates in heat exchange, the temperature of the heat exchange medium is greater than or equal to the fifth preset medium temperature, and the temperature regulating device performs heating work.

[0351] If the temperature in the energy storage device is lower than the seventh preset temperature, the first heat exchange fan can be controlled to be turned on to blow air toward the distribution box, and the first driving pump can be controlled to be turned on.

[0352] If the temperature in the distribution box is lower than the eighth preset temperature, the first heat exchange fan can be controlled to turn on to blow air toward the distribution box, and the first drive pump can be controlled to turn on.

[0353] If the temperature in the energy storage device is greater than or equal to the seventh preset temperature, and the temperature in the distribution box is greater than or equal to the eighth preset temperature, the first heat exchange fan can be controlled to be turned off, and the first drive pump can be controlled to be turned off.

[0354] The seventh preset temperature and the eighth preset temperature can be preset. The seventh preset temperature can be a single value or a range of values, and the eighth preset temperature can be a single value or a range of values.

[0355] As some optional embodiments of the present application, the seventh preset temperature may be but is not limited to any value between -9 degrees Celsius and -11 degrees Celsius. For example, the seventh preset temperature may be but is not limited to -9 degrees Celsius, -10 degrees Celsius, or -11 degrees Celsius.

[0356] As some optional embodiments of the present application, the eighth preset temperature may be but is not limited to any value between -9 degrees Celsius and -11 degrees Celsius. For example, the eighth preset temperature may be but is not limited to -9 degrees Celsius, -10 degrees Celsius, or -11 degrees Celsius.

[0357] In the above technical solution, when the first heat exchange device participates in heat exchange, and the temperature of the heat exchange medium is greater than or equal to the fifth preset medium temperature, and the temperature control device performs heating work, the first heat exchange fan and the first drive pump can be controlled to work according to the temperature in the energy storage device and / or the temperature in the distribution box, so that the temperature of the distribution box can be safely and reliably managed, and it is beneficial to reduce the energy consumption of the energy storage box.

[0358] According to some embodiments of the present application, Figure 4 As shown, the second heat exchange device includes a second heat exchange fan, and the method also includes: when the temperature in the main control box is greater than the ninth preset temperature and less than or equal to the tenth preset temperature, controlling the second heat exchange fan to turn on at a fourth speed and to work according to a fourth preset duty cycle; when the temperature in the main control box is greater than the tenth preset temperature and less than or equal to the eleventh preset temperature, controlling the second heat exchange fan to turn on at a fifth speed and to work according to a fifth preset duty cycle, wherein the fifth speed is greater than the fourth speed, and the fifth preset duty cycle is greater than the fourth preset duty cycle; when the temperature in the main control box is greater than the eleventh preset temperature, controlling the second heat exchange fan to turn on at a sixth speed and to work according to a sixth preset duty cycle, wherein the sixth speed is greater than the fifth speed, and the sixth preset duty cycle is greater than the fifth preset duty cycle; when the temperature in the main control box is less than or equal to the ninth preset temperature, controlling the second heat exchange fan to turn off.

[0359] The second heat exchange device may include a second heat exchange fan, which may be arranged in the main control box, or the second heat exchange fan may be arranged near the main control box, and the first heat exchange fan is suitable for blowing air toward the main control box.

[0360] If the temperature inside the main control box is greater than the ninth preset temperature and the temperature inside the main control box is less than or equal to the tenth preset temperature, the second heat exchange fan can be controlled to turn on at a fourth speed to blow air toward the main control box, and the second heat exchange fan can be controlled to operate according to a fourth preset duty cycle.

[0361] The ninth preset temperature, the tenth preset temperature, the fourth preset duty cycle, and the fourth speed can all be pre-set. The ninth preset temperature can be a single value or a range of values, the tenth preset temperature can be a single value or a range of values, the fourth speed can be a single value or a range of values, and the fourth preset duty cycle can be a single percentage or a range of percentages.

[0362] As some optional embodiments of the present application, the ninth preset temperature may be but is not limited to any value between 40 degrees Celsius and 50 degrees Celsius. For example, the ninth preset temperature may be but is not limited to 40 degrees Celsius, 45 degrees Celsius, or 50 degrees Celsius.

[0363] As some optional embodiments of the present application, the tenth preset temperature may be but is not limited to any value between 55 degrees Celsius and 65 degrees Celsius. For example, the tenth preset temperature may be but is not limited to 55 degrees Celsius, 60 degrees Celsius, or 65 degrees Celsius.

[0364] As some optional embodiments of the present application, the fourth speed may be but is not limited to any speed between 900 r / min-1100 r / min, for example, the fourth speed may be but is not limited to 900 r / min, 1000 r / min, 1100 r / min.

[0365] As some optional embodiments of the present application, the fourth preset duty cycle may be but is not limited to any percentage between 45% and 55%. For example, the fourth preset duty cycle may be but is not limited to 45%, 50%, or 55%.

[0366] If the temperature in the main control box is greater than the tenth preset temperature, and the temperature in the main control box is less than or equal to the eleventh preset temperature, the second heat exchange fan can be controlled to start at the fifth speed to blow air toward the main control box, and the second heat exchange fan can be controlled to work according to the fifth preset duty cycle. The fifth speed is greater than the fourth speed, and the fifth preset duty cycle is greater than the fourth preset duty cycle.

[0367] The eleventh preset temperature, the fifth preset duty cycle, and the fifth speed can all be pre-set. The eleventh preset temperature can be a single value or a range of values, the fifth speed can be a single value or a range of values, and the fifth preset duty cycle can be a single percentage or a range of percentages.

[0368] As some optional embodiments of the present application, the eleventh preset temperature may be but is not limited to any value between 80 degrees Celsius and 90 degrees Celsius. For example, the eleventh preset temperature may be but is not limited to 80 degrees Celsius, 85 degrees Celsius, or 90 degrees Celsius.

[0369] As some optional embodiments of the present application, the fifth speed may be but is not limited to any speed between 1900 r / min-2100 r / min, for example, the fifth speed may be but is not limited to 1900 r / min, 2000 r / min, 2100 r / min.

[0370] As some optional embodiments of the present application, the fifth preset duty cycle may be any percentage between 75% and 85%, but not limited to, for example, the fifth preset duty cycle may be 75%, 80%, or 85%, but not limited to, it.

[0371] If the temperature in the main control box is greater than the eleventh preset temperature, the second heat exchange fan can be controlled to start at a sixth speed to blow air toward the main control box, and the second heat exchange fan can be controlled to work according to a sixth preset duty cycle. The sixth speed is greater than the fifth speed, and the sixth preset duty cycle is greater than the fifth preset duty cycle.

[0372] The sixth preset duty cycle and the sixth speed can both be preset. The sixth speed can be a single value or a range of values, and the sixth preset duty cycle can be a single percentage or a range of percentages.

[0373] As some optional embodiments of the present application, the sixth speed may be but is not limited to any speed between 2900 r / min-3100 r / min, for example, the sixth speed may be but is not limited to 2900 r / min, 3000 r / min, 3100 r / min.

[0374] As some optional embodiments of the present application, the sixth preset duty cycle may be, but is not limited to, any percentage between 95% and 100%. For example, the sixth preset duty cycle may be, but is not limited to, 95%, 97%, or 100%.

[0375] If the temperature in the main control box is less than or equal to the ninth preset temperature, the second heat exchange fan can be controlled to be turned off.

[0376] In the above technical solution, the operation of the second heat exchange fan can be controlled according to the temperature in the main control box, so that the temperature of the main control box can be safely and reliably managed, and the temperature of the main control box can be kept within an appropriate temperature range for a long time.

[0377] According to some embodiments of the present application, Figure 4 As shown, when the temperature in the main control box is greater than an eleventh preset temperature, the method further includes: if the duration exceeds a first preset time, controlling the main control box to perform over-temperature protection.

[0378] Among them, if the temperature in the main control box is greater than the eleventh preset temperature, the second heat exchange fan can be controlled to start at the sixth speed to blow air toward the main control box, and the second heat exchange fan can be controlled to work according to the sixth preset duty cycle. If the temperature in the main control box is greater than the eleventh preset temperature for a duration exceeding the first preset time, the main control box can be controlled to perform over-temperature protection. As some optional embodiments of the present application, the over-temperature protection method can be to stop the main control box from working when the temperature is greater than the eleventh preset temperature for a duration exceeding the first preset time.

[0379] As some optional embodiments of the present application, the main control box can be connected to the energy storage device, and the connection method includes but is not limited to electrical connection, communication connection, etc. The main control box can control the energy storage device. The number of main control boxes can be the same as the number of energy storage devices, and the main control boxes can be connected to the energy storage devices one by one.

[0380] The first preset time can be preset. The first preset time can be a single value or a range of values. As some optional embodiments of the present application, the first preset time can be but not limited to any speed between 28min-32min, for example, the first preset time can be but not limited to 28min, 30min, 32min.

[0381] In the above technical solution, if the temperature inside the main control box is greater than the eleventh preset temperature for a period of time exceeding the first preset time, the main control box can be controlled to perform over-temperature protection, thereby reducing the probability of the main control box being damaged due to excessive temperature for too long, and the probability of dangerous situations occurring can be reduced.

[0382] According to some embodiments of the present application, Figure 4 As shown, the second heat exchange device also includes a second driving pump, wherein, when the second heat exchange device participates in heat exchange, the method also includes: if the temperature in the main control box is greater than a tenth preset temperature, controlling the second driving pump to start.

[0383] The second driving pump can be used to drive the heat exchange medium to flow into the third medium flow path of the second heat exchange device to perform heat exchange with the main control box.

[0384] If the temperature in the main control box is greater than the tenth preset temperature, the second driving pump can be controlled to start, so as to cool the main control box through the heat exchange medium.

[0385] In the above technical solution, when the temperature inside the main control box is greater than the tenth preset temperature, the main control box can be cooled by a heat exchange medium, thereby quickly reducing the temperature of the main control box and keeping the temperature of the main control box within an appropriate temperature range for a long time.

[0386] According to some embodiments of the present application, the energy storage box includes a distribution box, a main control box, an energy storage device, a temperature regulating device, a first heat exchange device and a second heat exchange device, the energy storage device has a first medium flow path, at least part of the first heat exchange device is arranged in the distribution box and exchanges heat with the distribution box, at least part of the second heat exchange device is arranged in the main control box and exchanges heat with the main control box, the temperature regulating device selectively heats or cools the heat exchange medium, and selectively communicates with at least two of the first medium flow path, the first heat exchange device and the second heat exchange device, so that the heat exchange medium flows into at least two of the first medium flow path, the first heat exchange device and the second heat exchange device. Among them, the energy storage box has a box body, the distribution box, the main control box and the energy storage device can all be arranged in the box body, the energy storage device has a first medium flow path, and the heat exchange medium flows in the first medium flow path.

[0387] like Figure 2 As shown, the thermal management method of the energy storage tank may include the following steps:

[0388] S01, obtaining temperature information of a battery in an energy storage device, and obtaining the temperature of a heat exchange medium.

[0389] S02, determining the minimum battery temperature according to the temperature information, and judging whether the minimum battery temperature is less than or equal to the first preset battery temperature, if so, proceeding to step S03, if not, proceeding to step S09.

[0390] S03, determining whether the temperature of the heat exchange medium is less than or equal to the first preset medium temperature, if so, proceeding to step S04, if not, proceeding to step S05.

[0391] S04, controlling the temperature regulating device to perform heating work until the temperature of the heat exchange medium is greater than or equal to a second preset medium temperature.

[0392] S05, determining whether the temperature of the heat exchange medium is greater than the first preset medium temperature and less than the second preset medium temperature, if so, proceeding to step S06, if not, proceeding to step S07.

[0393] S06, when the temperature regulating device is in heating operation, the temperature regulating device is controlled to maintain the heating operation; when the temperature regulating device is not in heating operation, the temperature regulating device is controlled to perform the self-circulation operation of the heat exchange medium.

[0394] S07, determining whether the temperature of the heat exchange medium is greater than or equal to a second preset medium temperature, if so, proceeding to step S08.

[0395] S08, controlling the temperature regulating device to perform self-circulation of the heat exchange medium.

[0396] S09, determining whether the lowest battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if so, proceeding to step S010, if not, proceeding to step S017.

[0397] S010, determining whether the temperature regulating device is performing heating operation, if so, proceeding to step S011, if not, proceeding to step S014.

[0398] S011, determine whether the temperature of the heat exchange medium is less than the second preset medium temperature, if so, proceed to step S012, if not, proceed to step S013.

[0399] S012, controlling the temperature regulating device to maintain heating operation.

[0400] S013, controlling the temperature regulating device to perform self-circulation of the heat exchange medium.

[0401] S014, determining whether the temperature regulating device performs self-circulation of the heat exchange medium, if so, proceeding to step S015, if not, proceeding to step S016.

[0402] S015, controlling the temperature regulating device to keep the heat exchange medium in self-circulation operation.

[0403] S016, controlling the temperature control device to sleep.

[0404] S017, determine the maximum battery temperature according to the temperature information, and judge whether the minimum battery temperature is greater than the third preset battery temperature and whether the maximum battery temperature is greater than the fourth preset battery temperature. If so, proceed to step S018, if not, proceed to step S026.

[0405] S018, determining whether the temperature of the heat exchange medium is greater than or equal to a third preset medium temperature, if so, proceeding to step S019, if not, proceeding to step S020.

[0406] S019, controlling the temperature regulating device to perform cooling work until the temperature of the heat exchange medium is less than or equal to a fourth preset medium temperature.

[0407] S020, determining whether the temperature of the heat exchange medium is less than the third preset medium temperature and greater than the fourth preset medium temperature, if so, proceeding to step S021, if not, proceeding to step S024.

[0408] S021, determining whether the temperature control device is performing cooling operation, if so, proceeding to step S022, if not, proceeding to step S023.

[0409] S022, controlling the temperature control device to maintain refrigeration operation.

[0410] S023, controlling the temperature regulating device to perform self-circulation of the heat exchange medium.

[0411] S024, determining whether the temperature of the heat exchange medium is less than or equal to a fourth preset medium temperature, if so, proceeding to step S025.

[0412] S025, controlling the temperature regulating device to perform self-circulation of the heat exchange medium.

[0413] S026, determining whether the lowest battery temperature is less than or equal to the third preset battery temperature, or whether the highest battery temperature is less than or equal to the fourth preset battery temperature, if so, proceeding to step S027.

[0414] S027, determining whether the maximum battery temperature is greater than a fifth preset temperature, if so, proceeding to step S028, if not, proceeding to step S035.

[0415] S028, determining whether the temperature regulating device is performing cooling operation, if so, proceeding to step S029, if not, proceeding to step S032.

[0416] S029, determining whether the temperature of the heat exchange medium is greater than a fourth preset medium temperature, if so, proceeding to step S030, if not, proceeding to step S031.

[0417] S030, controlling the temperature control device to maintain cooling operation.

[0418] S031, controlling the temperature regulating device to perform self-circulation of the heat exchange medium.

[0419] S032, determine whether the temperature control device performs self-circulation of the heat exchange medium. If so, proceed to step S033; if not, proceed to step S034.

[0420] S033, controlling the temperature regulating device to keep the heat exchange medium in self-circulation operation.

[0421] S034, controlling the temperature control device to sleep.

[0422] S035, determining whether the temperature difference between the highest battery temperature and the lowest battery temperature is greater than a first preset temperature threshold, and if so, controlling the temperature regulating device to perform self-circulation of the heat exchange medium.

[0423] like Figure 3 As shown, the thermal management method of the energy storage tank may further include the following steps:

[0424] SS01, determine whether the temperature of the heat exchange medium is less than the fifth preset medium temperature, or whether the temperature adjustment device is performing cooling work, if so, enter step SS02, if not, enter step SS10.

[0425] SS02, determine whether the temperature in the energy storage device is greater than the first preset temperature and less than or equal to the second preset temperature, or whether the temperature in the distribution box is greater than the third preset temperature and less than or equal to the fourth preset temperature. If so, proceed to step SS03, if not, proceed to step SS04.

[0426] SS03, control the first heat exchange fan to start at a first speed and operate according to a first preset duty cycle.

[0427] SS04, determine whether the temperature in the energy storage device is greater than the second preset temperature and less than or equal to the fifth preset temperature, or whether the temperature in the distribution box is greater than the fourth preset temperature and less than or equal to the sixth preset temperature. If so, proceed to step SS05, if not, proceed to step SS06.

[0428] SS05, controls the first driving pump to start, and controls the first heat exchange fan to start at a second speed and operate according to a second preset duty cycle.

[0429] SS06, determine whether the temperature in the energy storage device is greater than the fifth preset temperature, or whether the temperature in the distribution box is greater than the sixth preset temperature. If so, proceed to step SS07, if not, proceed to step SS08.

[0430] SS07, controls the first driving pump to start, and controls the first heat exchange fan to start at a third speed and operate according to a third preset duty cycle.

[0431] SS08, determine whether the temperature in the energy storage device is less than or equal to the first preset temperature, and whether the temperature in the distribution box is less than or equal to the third preset temperature. If so, enter step SS09.

[0432] SS09, control the first driving pump and the first heat exchange fan to be turned off respectively.

[0433] SS010, determine whether the temperature of the heat exchange medium is greater than or equal to the fifth preset medium temperature and whether the temperature regulating device is performing heating work. If so, enter step SS011.

[0434] SS011, determine whether the temperature in the energy storage device is lower than the seventh preset temperature, or whether the temperature in the distribution box is lower than the eighth preset temperature. If so, proceed to step SS012; if not, proceed to step SS013.

[0435] SS012, control the first driving pump and the first heat exchange fan to start respectively.

[0436] SS013, determine whether the temperature in the energy storage device is greater than or equal to the seventh preset temperature, and whether the temperature in the distribution box is greater than or equal to the eighth preset temperature. If so, enter step SS014.

[0437] SS014, control the first driving pump and the first heat exchange fan to be turned off respectively.

[0438] like Figure 4 As shown, the thermal management method of the energy storage tank may further include the following steps:

[0439] SSS01, determine whether the temperature in the main control box is greater than the ninth preset temperature and less than or equal to the tenth preset temperature. If so, go to step SSS02, if not, go to step SSS03 and step SSS07.

[0440] SSS02, controls the second heat exchange fan to start at a fourth speed and operate according to a fourth preset duty cycle.

[0441] SSS03, determine whether the temperature in the main control box is greater than the tenth preset temperature and less than or equal to the eleventh preset temperature, if so, go to step SSS04, if not, go to step SSS05.

[0442] SSS04, control the second heat exchange fan to start at the fifth speed and operate according to the fifth preset duty cycle, and control the second drive pump to start.

[0443] SSS05, determine whether the temperature in the main control box is greater than the eleventh preset temperature. If so, go to step SSS06 and step SSS09.

[0444] SSS06, controls the second heat exchange fan to start at a sixth speed and operate according to a sixth preset duty cycle, and controls the second drive pump to start.

[0445] SSS07, determine whether the temperature in the main control box is less than or equal to the ninth preset temperature, if so, go to step SSS08.

[0446] SSS08, controls the second heat exchange fan to shut down.

[0447] SSS09, determines whether the duration exceeds the first preset time, and if so, controls the main control box to perform over-temperature protection.

[0448] According to some embodiments of the present application, the present application further provides a battery management system. The battery management system includes a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above-mentioned thermal management method when executing the computer program.

[0449] In the above technical solution, the temperature of the distribution box, the main control box and the energy storage device can be safely and reliably managed, which is beneficial to improving the safety of the energy storage box and reducing the energy consumption of the energy storage box.

[0450] like Fig.12As shown, the battery management system may include at least one processor 1201, at least one communication interface 1202, at least one memory 1203 and at least one communication bus 1204. In an embodiment of the present application, the number of the processor 1201, the communication interface 1202, the memory 1203 and the communication bus 1204 is at least one, and the processor 1201, the communication interface 1202 and the memory 1203 communicate with each other through the communication bus 1204.

[0451] The memory 1203 may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The memory 1203 is used to store programs, and the processor 1201 executes the program after receiving the execution instruction to implement the steps of the thermal management method of the energy storage box described in the above embodiment.

[0452] Processor 1201 may be an integrated circuit chip with signal processing capabilities. The above-mentioned processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The various methods, steps and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0453] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0454] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0455] According to some embodiments of the present application, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned thermal management method are implemented.

[0456] In the above technical solution, the temperature of the distribution box, the main control box and the energy storage device can be safely and reliably managed, which is beneficial to improving the safety of the energy storage box and reducing the energy consumption of the energy storage box.

[0457] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0458] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A thermal management method for an energy storage tank, characterized in that: The energy storage box includes a distribution box, a main control box, an energy storage device, a temperature regulating device, a first heat exchange device and a second heat exchange device. The energy storage device has a first medium flow path. At least part of the first heat exchange device is arranged in the distribution box and exchanges heat with the distribution box. At least part of the second heat exchange device is arranged in the main control box and exchanges heat with the main control box. The temperature regulating device selectively heats or cools the heat exchange medium and selectively communicates with at least two of the first medium flow path, the first heat exchange device and the second heat exchange device so that the heat exchange medium flows into at least two of the first medium flow path, the first heat exchange device and the second heat exchange device. The method includes: Acquiring temperature information of the battery in the energy storage device and acquiring the temperature of the heat exchange medium; The temperature regulating device is controlled according to the temperature information and the temperature of the heat exchange medium to regulate at least one of the temperature in the energy storage device, the temperature in the distribution box, and the temperature in the main control box.

2. The method according to claim 1, characterized in that Controlling the temperature adjustment device according to the temperature information and the temperature of the heat exchange medium includes: determining at least one of a maximum battery temperature and a minimum battery temperature according to the temperature information; The temperature regulating device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature and the temperature of the heat exchange medium.

3. The method according to claim 2, characterized in that Controlling the temperature regulating device according to at least one of the maximum battery temperature and the minimum battery temperature and the temperature of the heat exchange medium includes: When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the first preset medium temperature, the temperature control device is controlled to perform heating until the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, wherein the second preset medium temperature is greater than the first preset medium temperature.

4. The method according to claim 2, characterized in that: The temperature regulating device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature and the temperature of the heat exchange medium, further comprising: When the minimum battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than the first preset medium temperature and less than the second preset medium temperature, then When the temperature regulating device is performing heating operation, controlling the temperature regulating device to maintain the heating operation; When the temperature regulating device is not performing heating operation, the temperature regulating device is controlled to perform self-circulation operation of the heat exchange medium.

5. The method according to claim 2 or 3, characterized in that: The temperature regulating device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature and the temperature of the heat exchange medium, further comprising: When the lowest battery temperature is less than or equal to the first preset battery temperature, if the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature regulating device is controlled to perform self-circulation of the heat exchange medium.

6. The method according to claim 2, characterized in that Controlling the temperature regulating device according to at least one of the maximum battery temperature and the minimum battery temperature and the temperature of the heat exchange medium includes: When the minimum battery temperature is greater than or equal to the first preset battery temperature and less than or equal to the second preset battery temperature, if the temperature regulating device performs heating operation, then When the temperature of the heat exchange medium is lower than the second preset medium temperature, controlling the temperature regulating device to maintain heating operation; When the temperature of the heat exchange medium is greater than or equal to the second preset medium temperature, the temperature regulating device is controlled to perform self-circulation of the heat exchange medium.

7. The method according to claim 6, characterized in that When the minimum battery temperature is greater than or equal to a first preset battery temperature and less than or equal to a second preset battery temperature, the method further includes: If the temperature control device is not performing heating work, then When the temperature regulating device performs the self-circulation of the heat exchange medium, controlling the temperature regulating device to maintain the self-circulation of the heat exchange medium; When the temperature regulating device does not perform the self-circulation of the heat exchange medium, the temperature regulating device is controlled to be dormant.

8. The method according to claim 2, characterized in that: Controlling the temperature regulating device according to at least one of the maximum battery temperature and the minimum battery temperature and the temperature of the heat exchange medium includes: In the case where the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, then when the temperature of the heat exchange medium is greater than or equal to the third preset medium temperature, the temperature control device is controlled to perform cooling work until the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, wherein the third preset medium temperature is greater than the fourth preset medium temperature, and the third preset battery temperature is greater than the second preset battery temperature.

9. The method according to claim 2, characterized in that: The temperature regulating device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature and the temperature of the heat exchange medium, further comprising: In the case where the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is greater than the third preset battery temperature, and the maximum battery temperature is greater than the fourth preset battery temperature, then in the case where the temperature of the heat exchange medium is less than the third preset medium temperature and greater than the fourth preset medium temperature, If the temperature regulating device performs cooling operation, controlling the temperature regulating device to maintain cooling operation; If the temperature regulating device is not performing cooling work, controlling the temperature regulating device to perform self-circulation of the heat exchange medium; Wherein, the third preset battery temperature is greater than the second preset battery temperature.

10. The method according to claim 8 or 9, characterized in that: The temperature regulating device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature and the temperature of the heat exchange medium, further comprising: When the minimum battery temperature is greater than the third preset battery temperature and the maximum battery temperature is greater than the fourth preset battery temperature, if the temperature of the heat exchange medium is less than or equal to the fourth preset medium temperature, the temperature regulating device is controlled to perform self-circulation of the heat exchange medium.

11. The method according to claim 2, characterized in that The temperature regulating device is controlled according to at least one of the maximum battery temperature and the minimum battery temperature and the temperature of the heat exchange medium, further comprising: In the case where the minimum battery temperature is greater than the second preset battery temperature, if the minimum battery temperature is less than or equal to the third preset battery temperature, or the maximum battery temperature is less than or equal to the fourth preset battery temperature, then in the case where the maximum battery temperature is greater than the fifth preset temperature, if the temperature regulating device performs cooling operation, then When the temperature of the heat exchange medium is greater than a fourth preset medium temperature, controlling the temperature regulating device to maintain refrigeration operation; When the temperature of the heat exchange medium is less than or equal to a fourth preset medium temperature, controlling the temperature regulating device to perform a self-circulation operation of the heat exchange medium; The third preset battery temperature is greater than the second preset battery temperature, and the fifth preset battery temperature is less than the fourth preset battery temperature.

12. The method according to claim 11, characterized in that When the maximum battery temperature is greater than a fifth preset temperature, the method further includes: If the temperature control device does not perform cooling work, then When the temperature regulating device performs the self-circulation of the heat exchange medium, controlling the temperature regulating device to maintain the self-circulation of the heat exchange medium; When the temperature regulating device does not perform the self-circulation of the heat exchange medium, the temperature regulating device is controlled to be dormant.

13. The method according to claim 11, characterized in that When the maximum battery temperature is less than or equal to a fifth preset temperature, the method further includes: If the temperature difference between the highest battery temperature and the lowest battery temperature is greater than a first preset temperature threshold, the temperature regulating device is controlled to perform a self-circulation operation of the heat exchange medium.

14. The method according to claim 1, characterized in that The first heat exchange device includes a first driving pump and a first heat exchange fan, wherein, when the first heat exchange device participates in heat exchange, the method further includes: If the temperature of the heat exchange medium is lower than the fifth preset medium temperature, or the temperature regulating device performs cooling operation, then When the temperature in the energy storage device is greater than the first preset temperature and less than or equal to the second preset temperature, or the temperature in the distribution box is greater than the third preset temperature and less than or equal to the fourth preset temperature, the first heat exchange fan is controlled to be turned on at a first speed and to operate according to a first preset duty cycle; When the temperature in the energy storage device is greater than the second preset temperature and less than or equal to the fifth preset temperature, or the temperature in the distribution box is greater than the fourth preset temperature and less than or equal to the sixth preset temperature, the first driving pump is controlled to start, and the first heat exchange fan is controlled to start at a second speed and operate according to a second preset duty cycle, wherein the second speed is greater than the first speed, and the second preset duty cycle is greater than the first preset duty cycle; When the temperature in the energy storage device is greater than a fifth preset temperature, or the temperature in the distribution box is greater than a sixth preset temperature, the first driving pump is controlled to be turned on, and the first heat exchange fan is controlled to be turned on at a third speed and to operate according to a third preset duty cycle, wherein the third speed is greater than the second speed, and the third preset duty cycle is greater than the second preset duty cycle; When the temperature in the energy storage device is less than or equal to the first preset temperature, and the temperature in the distribution box is less than or equal to the third preset temperature, the first driving pump and the first heat exchange fan are controlled to be turned off respectively.

15. The method according to claim 14, characterized in that When the temperature of the heat exchange medium is greater than or equal to a fifth preset medium temperature and the temperature regulating device performs heating work, the method further includes: If the temperature in the energy storage device is lower than the seventh preset temperature, or the temperature in the power distribution box is lower than the eighth preset temperature, the first driving pump and the first heat exchange fan are controlled to be turned on respectively; If the temperature in the energy storage device is greater than or equal to the seventh preset temperature, and the temperature in the distribution box is greater than or equal to the eighth preset temperature, the first driving pump and the first heat exchange fan are controlled to be turned off respectively.

16. The method according to claim 1, characterized in that The second heat exchange device includes a second heat exchange fan, and the method further includes: When the temperature in the main control box is greater than a ninth preset temperature and less than or equal to a tenth preset temperature, the second heat exchange fan is controlled to be turned on at a fourth speed and to operate according to a fourth preset duty cycle; When the temperature in the main control box is greater than the tenth preset temperature and less than or equal to the eleventh preset temperature, the second heat exchange fan is controlled to be turned on at a fifth speed and to operate according to a fifth preset duty cycle, wherein the fifth speed is greater than the fourth speed, and the fifth preset duty cycle is greater than the fourth preset duty cycle; When the temperature in the main control box is greater than an eleventh preset temperature, the second heat exchange fan is controlled to be turned on at a sixth speed and to operate according to a sixth preset duty cycle, wherein the sixth speed is greater than the fifth speed, and the sixth preset duty cycle is greater than the fifth preset duty cycle; When the temperature in the main control box is less than or equal to a ninth preset temperature, the second heat exchange fan is controlled to be turned off.

17. The method according to claim 16, characterized in that When the temperature in the main control box is greater than an eleventh preset temperature, the method further includes: If the duration exceeds the first preset time, the main control box is controlled to perform over-temperature protection.

18. The method according to claim 16 or 17, characterized in that The second heat exchange device further includes a second driving pump, wherein, when the second heat exchange device participates in heat exchange, the method further includes: If the temperature in the main control box is greater than a tenth preset temperature, the second driving pump is controlled to start.

19. A battery management system, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 18 are implemented.

20. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 18 are implemented.

21. An energy storage box, characterized in that: include: A distribution box, a main control box, an energy storage device, a temperature regulating device, a first heat exchange device and a second heat exchange device, wherein the energy storage device has a first medium flow path, at least part of the first heat exchange device is disposed in the distribution box and exchanges heat with the distribution box, at least part of the second heat exchange device is disposed in the main control box and exchanges heat with the main control box, the temperature regulating device selectively heats or cools a heat exchange medium, and selectively communicates with at least two of the first medium flow path, the first heat exchange device and the second heat exchange device, so that the heat exchange medium flows into at least two of the first medium flow path, the first heat exchange device and the second heat exchange device; A control device is used to obtain temperature information of the battery in the energy storage device and the temperature of the heat exchange medium, and to control the temperature regulating device according to the temperature information and the temperature of the heat exchange medium to regulate at least one of the temperature in the energy storage device, the temperature in the distribution box and the temperature in the main control box.

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