Thermal management method, electronic device, and computer-readable storage medium

Abstract

A thermal management method, an electronic device, and a computer-readable storage medium, which relate to the field of batteries. The thermal management method comprises: acquiring a control condition, wherein the control condition is determined on the basis of a combination relationship between the value range of a first variable of a battery (12) and the value range of a second variable of the battery (12); and on the basis of the control condition, controlling a thermal management apparatus (15) for the battery (12). The method can reduce the adverse impact of a single control variable on thermal management, thereby realizing precise control over battery thermal management and improving the charging speed of supercharging.

Description

Thermal management method, electronic device, and computer-readable storage medium

[0001] The present application claims priority to the Chinese patent application No. 202411394666.X, filed on September 30, 2024, and entitled "Thermal management method, electronic device, and computer-readable storage medium", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of batteries, and in particular to a thermal management method, an electronic device, and a computer-readable storage medium. BACKGROUND

[0003] With the popularization of new energy vehicles, super charging technology is also developing. Super charging is a high-power charging technology that usually uses direct current charging method to provide a large amount of electric energy for electric vehicles in a short time. Most of the current new energy vehicles are equipped with super charging function, which can significantly improve the charging efficiency and speed when charging the vehicle using the super charging function. Therefore, in long-distance driving or emergency application scenarios, the super charging function becomes the first choice of users.

[0004] Usually, during the charging process of the vehicle, the temperature of the battery needs to be controlled through thermal management. For vehicles equipped with super charging function, if the thermal management method in the ordinary charging process is used, it may affect the charging speed of super charging, thereby affecting the user experience. TECHNICAL PROBLEM

[0005] The present application provides a kind of energy storage device, energy storage system and redundancy control method, effectively improve the stability and reliability of energy storage system operation. TECHNICAL SOLUTION

[0006] The present application provides a thermal management method, an electronic device, and a computer-readable storage medium, which helps to improve the charging speed of super charging.

[0007] To achieve the above purpose, the present application adopts the following technical solutions:

[0008] In a first aspect, a thermal management method is provided, comprising:

[0009] obtaining a control condition, wherein the control condition is determined according to the combination relationship between the value range of the first variable of the battery and the value range of the second variable of the battery;

[0010] controlling the thermal management device of the battery according to the control condition.

[0011] In the embodiments of the application, the control condition is set by combination of multiple battery variables, and the heat management device is controlled according to the control condition. Through the above method, the false influence of a single control variable on heat management can be reduced, accurate control of battery heat management is realized, the charging speed of supercharging is improved, and user experience is improved.

[0012] In an implementation form of the first aspect, the control condition is determined according to a combination relationship between the first range and the second range.

[0013] The value range of a second variable of the battery is obtained, to obtain a second range.

[0014] The value range of a second variable of the battery is obtained, to obtain a second range.

[0015] The value range of a second variable of the battery is obtained, to obtain a second range.

[0016] In the embodiments of the application, the control condition is set by combination of the value ranges of two battery variables, multiple factors affecting the battery temperature are considered, the false influence of a single variable on heat management can be reduced, and accurate control of battery heat management is realized.

[0017] In an implementation form of the first aspect, the control condition is determined according to a combination relationship between the first range and the second range.

[0018] The first range is divided into at least one numerical interval according to a preset control gear, to obtain a first numerical interval corresponding to each control gear.

[0019] The second range is divided into at least one numerical interval according to the control gear, to obtain a second numerical interval corresponding to each control gear.

[0020] The first numerical interval and the second numerical interval corresponding to each control gear are combined to generate a first condition in the control condition of each control gear; wherein the first condition corresponding to the control gear is used to indicate entering the control gear.

[0021] In the embodiments of the application, the control condition is set by combination of multiple battery variables, and the heat management device is controlled according to the control condition. Through the above method, the false influence of a single control variable on heat management can be reduced, accurate control of battery heat management is realized, the charging speed of supercharging is improved, and user experience is improved.

[0022] In an implementation form of the first aspect, the control condition is determined according to a combination relationship between the first range and the second range.

[0023] determining, according to the first numerical interval corresponding to each control gear, a third numerical interval corresponding to each control gear;

[0024] determining, according to the second numerical interval corresponding to each control gear, a fourth numerical interval corresponding to each control gear;

[0025] combining the third numerical interval and the fourth numerical interval corresponding to each control gear to generate a second condition in the control condition of each control gear; wherein the second condition corresponding to the control gear is used to indicate a jump to an adjacent gear of the control gear.

[0026] The control condition is set by the combination of the plurality of battery variables, and the thermal management device is controlled according to the control condition. Through the above method, the false influence of a single control variable on thermal management can be reduced, accurate control of battery thermal management is achieved, the charging speed of supercharging is improved, and user experience is improved.

[0027] In an implementation form of the first aspect, for at least one control gear, the first condition corresponding to the control gear is that the monitored value of the first variable meets the first numerical interval corresponding to the control gear, and the monitored value of the second variable meets the second numerical interval corresponding to the control gear.

[0028] For at least one control gear, the second condition corresponding to the control gear is that the monitored value of the first variable meets the first numerical interval corresponding to the control gear, and the monitored value of the second variable meets the second numerical interval corresponding to the control gear.

[0029] It can be understood that when the first condition corresponding to the control gear is the AND combination of the first numerical interval and the second numerical interval corresponding to the control gear, it means that the monitored values of the two variables of the battery need to meet the respective numerical intervals at the same time to trigger the corresponding control gear. Since the numerical values of the first numerical interval and the second numerical interval corresponding to the lowest gear are relatively small, in this case, setting the first condition corresponding to the lowest gear as the AND combination of the first numerical interval and the second numerical interval can make the battery temperature in a relatively low temperature interval (such as the first numerical interval corresponding to the lowest gear) and the battery charge at a low charging rate. When the battery temperature rises to a high temperature interval (such as the first numerical interval corresponding to the middle gear or the highest gear), or the battery charges at a high charging rate, the thermal management is intervened, thereby effectively increasing the proportion of time that the battery works in the temperature interval of the maximum charging rate during the supercharging process, which is beneficial to improve the charging speed of supercharging.

[0030] In an implementation form of the first aspect, for at least one of the control gears, the first condition corresponding to the control gear is that the monitored value of the first variable satisfies a first numerical interval corresponding to the control gear or the monitored value of the second variable satisfies a second numerical interval corresponding to the control gear.

[0031] For at least one of the control gears, the second condition corresponding to the control gear is that the monitored value of the first variable satisfies a first numerical interval corresponding to the control gear or the monitored value of the second variable satisfies a second numerical interval corresponding to the control gear.

[0032] It can be understood that, when the first condition corresponding to a control gear is an or combination of the first numerical interval and the second numerical interval corresponding to the control gear, it means that the monitored value of either of the two variables of the battery satisfies the respective numerical interval, so that the corresponding control gear is triggered. Since the numerical values of the first numerical interval and the second numerical interval corresponding to the highest gear are relatively large, in this case, the first condition corresponding to the highest gear is set to be an or combination of the first numerical interval and the second numerical interval, so that the thermal management can be quickly intervened when the battery temperature is high or the charging rate is large after the supercharging starts, so as to control the rapid increase of the battery temperature, thereby effectively increasing the proportion of time during which the battery works in the temperature interval of the maximum charging rate in the supercharging process, and facilitating the improvement of the charging speed of the supercharging.

[0033] In an implementation form of the first aspect, in a case where the second condition corresponding to the first gear is used to indicate a jump to the second gear, the minimum value of the first numerical interval in the first condition corresponding to the first gear is greater than the maximum value of the third numerical interval in the second condition corresponding to the first gear;

[0034] The minimum value of the second numerical interval in the first condition corresponding to the first gear is greater than the maximum value of the fourth numerical interval in the second condition corresponding to the first gear;

[0035] The first gear is any one of the control gears, and the second gear is a neighboring gear of the first gear and has a control level lower than that of the first gear.

[0036] In an implementation form of the first aspect, in a case where the second condition corresponding to the first gear is used to indicate a jump to the third gear, the maximum value of the first numerical interval in the first condition corresponding to the first gear is less than the minimum value of the third numerical interval in the second condition corresponding to the first gear;

[0037] The maximum value of the second numerical interval in the first condition corresponding to the first gear is less than the minimum value of the fourth numerical interval in the second condition corresponding to the first gear;

[0038] The first gear is any one of the control gears, and the third gear is a gear adjacent to the first gear and has a control level higher than that of the first gear.

[0039] It can be understood that if the difference between the critical values of adjacent gears is too large, the control accuracy is low, and if the difference between the critical values of adjacent gears is too small, the gear switching is frequent. Through the above manner, the difference between the critical values of adjacent gears is greater than 0, so that the jump between adjacent gears will not be too frequent, and the control accuracy can be improved.

[0040] In an implementation form of the first aspect, the method further comprises:

[0041] obtaining the control parameter of the thermal management device corresponding to each control gear;

[0042] obtaining monitoring data of the battery, wherein the monitoring data comprises a monitoring value of the first variable and a monitoring value of the second variable;

[0043] controlling the thermal management device of the battery according to the monitoring data, the control condition corresponding to each control gear and the control parameter.

[0044] Through the above manner, different control parameters are set for each control gear, and when the control conditions corresponding to different control gears are met, the thermal management can be performed according to the current state of the battery, which helps to achieve more accurate control.

[0045] In an implementation form of the first aspect, the method further comprises:

[0046] If the monitoring data meets the first condition corresponding to the control gear, the thermal management device is controlled according to the control parameter corresponding to the control gear.

[0047] Through the above manner, when the control conditions corresponding to different control gears are met, the thermal management can be performed according to the control parameter corresponding to the control gear, which helps to achieve more accurate control.

[0048] In an implementation form of the first aspect, the method further comprises:

[0049] In the process of controlling the thermal management device according to the control parameter corresponding to the control gear, if the monitoring data meets the second condition of the control gear, the thermal management device is controlled according to the control parameter corresponding to the gear adjacent to the control gear.

[0050] In the above manner, the gear can be flexibly switched in the heat management process, so as to realize flexible control of the heat management device.

[0051] In an implementation form of the first aspect, the method further includes:

[0052] In the process of controlling the heat management device according to the control parameter corresponding to the control gear, if the monitoring data does not satisfy the first condition of the control gear and does not satisfy the second condition of the control gear, the heat management device is turned off.

[0053] In the above manner, in the process of heat management, when it is monitored that the monitoring value of the variable does not satisfy the control condition, the heat management device can be turned off in time, which helps to realize accurate control of heat management.

[0054] In an implementation form of the first aspect, the number of control gears is greater than 1.

[0055] It can be understood that the more control gears, the more smooth and accurate the control of heat management will be. Especially for a multi-charging pile, when the charging states of other several charging guns change, the charging current of the user's vehicle increases. In this case, multiple control gears are used to intervene in heat management more quickly and accurately, so as to increase the proportion of time in the temperature range working at the maximum charging rate in the supercharging process, which helps to improve the charging speed of supercharging.

[0056] In an implementation form of the first aspect, the first variable is the temperature of the battery; and the second variable is the charging current of the battery.

[0057] Since the temperature of the battery is a direct factor, the size of the charging current of the battery can affect the battery temperature. For example, when the battery is charged at a high charging rate, the battery temperature may quickly rise. In the embodiment of the application, the control condition is determined by the direct variable and the indirect variable affecting the battery temperature, and various factors affecting the battery temperature are considered, which helps to realize accurate control of battery heat management.

[0058] In an implementation form of the first aspect, the obtaining of the control condition includes:

[0059] In the case where the battery is in the first charging mode, if a preset condition is satisfied, the control condition is obtained.

[0060] The charging mode of the battery includes the first charging mode and the second charging mode, and the charging power of the first charging mode is higher than that of the second charging mode.

[0061] In the above manner, the heat management method of the present application is executed when the vehicle is supercharged and the battery temperature reaches the preset temperature; if the above conditions are not met, the existing heat management method is executed to manage the battery. Through the above manner, the vehicle can adapt to different charging modes, and charging can be performed in an optimal state under different charging modes.

[0062] In a second aspect, the embodiments of the present application provide an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the heat management method according to any one of the first aspect when executing the computer program.

[0063] In a third aspect, the embodiments of the present application provide a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the heat management method according to any one of the first aspect.

[0064] In a fifth aspect, the embodiments of the present application provide a computer program product, which, when running on a terminal device, enables the terminal device to execute the heat management method according to any one of the first aspect.

[0065] It can be understood that the beneficial effects of the above-mentioned second aspect to the fifth aspect can be referred to the related description in the first aspect, which will not be repeated here.

[0066] The above description is only a summary of the technical solutions of the present application, in order to enable the technical means of the present application to be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0067] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the attached drawings indicate the same or similar elements. In the drawings:

[0068] FIG. 1 is a schematic diagram of a heat management system according to an embodiment of the present application;

[0069] FIG. 2 is a flowchart of a heat management method according to an embodiment of the present application;

[0070] FIG. 3 is a schematic diagram of a control gear according to an embodiment of the present application;

[0071] FIG. 4 is a flowchart of a heat management method according to an embodiment of the present application;

[0072] FIG. 5 is a structural schematic diagram of an electronic device provided by an embodiment of the present application. Embodiments of the present application

[0073] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0074] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0075] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0076] In this paper, the reference to "embodiments" means that the specific features, structures or properties described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0077] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0078] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0079] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0080] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0081] With the popularization of new energy vehicles, super charging technology is also developing. Super charging is a high-power charging technology that can provide a large amount of electric energy for electric vehicles in a short time. Most of the current new energy vehicles are equipped with super charging function, which can significantly improve the charging efficiency and speed when charging the vehicle with super charging function, so in long-distance driving or emergency application scenarios, the super charging function becomes the first choice of users.

[0082] The temperature range of the maximum charging rate of the battery is small, usually 35-45℃. Among them, the charging rate refers to the current value required by the battery to charge to its rated capacity within a specified time, usually represented by C, C represents the rated capacity of the battery. The calculation formula of the charging rate C is: charging rate = charging current (A) / battery rated capacity (Ah). The larger the charging rate, the faster the battery charging and discharging speed. For example, 1C means charging and discharging the battery with 1 times the rated capacity of the current value, and 1.6C means charging and discharging the battery with 1.6 times the rated capacity of the current value.

[0083] When the battery is charged at a high charging rate, the battery temperature will rise. Both too high and too low battery temperature can cause battery performance to decline, and even pose a safety hazard, so battery thermal management is particularly important.

[0084] In the related art, the battery temperature is usually used as a control variable for thermal management of the battery. For example, when the battery temperature reaches a certain threshold (e.g., 38℃), the thermal management of the battery is started. During the process of ordinary charging (or slow charging) of the vehicle, the battery temperature rises slowly, so the proportion of time that the battery works in the temperature range of the maximum charging rate is high.

[0085] The supercharging function usually uses a direct current charging method, and the maximum power of a direct current charging pile is about 3KW-500KW. The maximum charging rate corresponding to the supercharging function can reach 4C, 5C or higher. During the process of supercharging of the vehicle, the battery temperature rises quickly, and if not cooled in time, the battery temperature can rise to 45℃ or even above 50℃ in a short time. When the battery temperature is high, the charging rate will be quickly reduced, which seriously affects the charging speed and affects the battery life.

[0086] For example, as shown in Table 1, an example of the charging rate of the battery is shown.

[0087] Table 1

[0088] As shown in Table 1, when the battery temperature is between 35℃ and 45℃, the proportion of time that the battery works in the temperature range of the maximum charging rate is high. When the battery temperature exceeds 50℃, the charging rate is quickly reduced. As shown in Table 1, when the battery temperature is 60℃, the charging rate is reduced to 0.5C. It can be seen that when the battery temperature is high, the proportion of time that the battery works in the temperature range of the maximum charging rate is low, which will greatly reduce the charging speed of supercharging.

[0089] To solve the above problems, in some implementations, for the supercharging function, the battery temperature is still used as a control variable for thermal management of the battery, but the threshold of the battery temperature needs to be lowered (e.g., 25℃).

[0090] The above implementation can improve the charging speed of supercharging, but when the vehicle is performing ordinary charging, the thermal management will be started when the battery temperature is low, which will cause the battery temperature to be cooled too low, which will still affect the proportion of time that the battery works in the temperature range of the maximum charging rate, and waste the thermal management resources.

[0091] Therefore, in the embodiments of the present application, other battery variables are introduced as control variables on the basis of using a single battery variable as a control variable, and the control conditions are set by combining the multiple battery variables, and the thermal management device is controlled according to the control conditions. Through the above method, the false influence of the single control variable on the thermal management can be reduced, the precise control of the battery thermal management can be realized, the charging speed of supercharging can be improved, and the user experience can be improved.

[0092] Referring to FIG. 1, a schematic diagram of a thermal management system is shown. As an example but not limitation, the thermal management system can include an electronic device 11, a battery 12, a first sensor 13, a second sensor 14, and a thermal management device 15, as shown in FIG. 1.

[0093] During the thermal management, the electronic device 11 acquires a monitoring value of a first variable of the battery 12 from the first sensor 13, acquires a monitoring value of a second variable of the battery 12 from the second sensor 14, and then executes the thermal management method according to the acquired monitoring values to control the thermal management device 15 to cool or heat the battery 12.

[0094] For example, when the first variable is the battery temperature and the second variable is the charging current of the battery, the first sensor 13 can be a temperature sensor, and the second sensor 14 can be a current sensor.

[0095] It can be understood that only two sensors (the first sensor 13 and the second sensor 14) are shown in FIG. 1, and when more battery variables are needed for thermal management, sensors corresponding to the battery variables can be added. The number of battery variables involved in the thermal management method and the number of sensors in the thermal management system are not limited in the embodiments of the present application.

[0096] Optionally, the thermal management device 15 can include a circulating pump and a cooler. The cooler is used to cool the battery by a cooling liquid. The circulating pump is used to control the circulation of the cooling liquid.

[0097] It should be noted that the thermal management device 15 cools the battery by the liquid, and can also cool the battery by other ways, such as air cooling, natural cooling, or thermoelectric cooling, etc. When other cooling technologies are used, the thermal management device 15 includes corresponding devices. The way of thermal management and the devices in the thermal management device 15 are not limited in the embodiments of the present application.

[0098] It should be noted that the thermal management of the battery not only includes battery cooling, but also includes battery heating. For example, when the outdoor temperature is low, the battery temperature is also low, at this time, the battery needs to be heated to an appropriate temperature range to ensure the normal charging and discharging of the battery. Therefore, the thermal management device 15 described above can also include devices for heating the battery, such as a heater, etc. Since the thermal management method provided by the embodiments of the present application is applicable to both battery heating and battery cooling, and the thermal management methods in the two cases are essentially the same. In order to facilitate the description, the embodiments of the present application are described by taking the case of battery cooling as an example. For the thermal management method in the case of battery heating, please refer to the description of the thermal management method in the case of battery cooling in the following embodiments, and the embodiments of the present application will not be repeated.

[0099] Based on the thermal management system shown in FIG. 1, the thermal management method of the embodiments of the present application is introduced as follows.

[0100] Referring to FIG. 2, it is a flowchart of the thermal management method provided by the embodiments of the present application. As an example but not limitation, as shown in FIG. 2, the thermal management method can include the following steps:

[0101] S201, obtaining a control condition.

[0102] The control condition is determined according to the combination relationship between the value range of the first variable of the battery and the value range of the second variable of the battery.

[0103] Since the temperature of the battery is a direct factor, the size of the charging current of the battery can affect the battery temperature, for example, when the battery is charged at a high charging rate, the battery temperature can quickly rise. Based on this, in some embodiments, the first variable is the battery temperature, and the second variable is the charging current of the battery.

[0104] In the embodiments of the present application, the control condition is determined by the direct variable and the indirect variable that affect the battery temperature, considering various factors that affect the battery temperature, which is helpful to realize accurate control of the battery thermal management.

[0105] It should be noted that there can be other variables that indirectly affect the battery temperature in actual application, and the control condition can also be determined according to three or more variables that can affect the battery temperature, which is not limited in the embodiments of the present application.

[0106] For the convenience of description, in the following embodiments, the first variable is taken as the battery temperature, and the second variable is taken as the charging current as an example.

[0107] Generally, a vehicle has both supercharging function and ordinary charging function. The supercharging function usually adopts direct current charging, and the ordinary charging function usually adopts alternating current charging. In order to enable the vehicle to adapt to different charging modes, in some embodiments, when the vehicle is supercharged, the thermal management method of the embodiments of the present application is adopted; when the vehicle is normally charged, the existing thermal management method is still adopted. Specifically:

[0108] In the case that the battery is in the first charging mode, if a preset condition is met, the control condition is obtained.

[0109] The charging mode of the battery includes the first charging mode and the second charging mode, and the charging power of the first charging mode is higher than that of the second charging mode.

[0110] For example, the first charging mode is supercharging, and the second charging mode is ordinary charging. Or, the first charging mode is direct current charging, and the second charging mode is alternating current charging.

[0111] Optionally, the preset condition is that the battery temperature is greater than a preset temperature. For example, the preset temperature is 25°C.

[0112] In the above manner, the thermal management method of the present application is executed when the vehicle is performing supercharging and the battery temperature reaches the preset temperature. If the above conditions are not met, the existing thermal management method is executed to manage the battery. Through the above manner, the vehicle can adapt to different charging modes, and charging can be performed in an optimal state under different charging modes.

[0113] In S202, the thermal management device of the battery is controlled according to the control condition.

[0114] The specific implementation of S202 can be referred to the description in the following embodiments.

[0115] In the embodiments of the present application, the control condition is set by combining a plurality of battery variables, and the thermal management device is controlled according to the control condition. Through the above method, the influence of a single control variable on the thermal management can be reduced, and accurate control of the battery thermal management can be achieved, which helps to improve the charging speed of supercharging and thus improves the user experience.

[0116] In some embodiments, the control condition in S201 can include:

[0117] The value range of the first variable of the battery is obtained, and a first range is obtained.

[0118] The value range of the second variable of the battery is obtained, and a second range is obtained.

[0119] The control condition is determined according to the combination relationship between the first range and the second range.

[0120] Taking the battery temperature as the first variable, the first range can be the theoretical range of the battery temperature. As described in the above embodiments, when the preset condition is met, the thermal management method of the present application is used. When the preset condition is that the battery temperature reaches the preset temperature, the first range in the present application refers to the part of the theoretical range of the battery temperature that is greater than or equal to the preset temperature. For example, when the preset temperature is 25°C, the first range can be 25°C-60°C.

[0121] Taking the charging current of the battery as the second variable, the charging current can be represented by the charging rate. Correspondingly, the second range can be the theoretical range of the charging rate, such as 0.1C-5C.

[0122] The combination relationship between the first range and the second range can be the sum or combination of a certain numerical interval in the first range and a certain numerical interval in the second range. It can be understood that the control condition includes a certain numerical interval in the first range and / or a certain numerical interval in the second range.

[0123] In the embodiments of the present application, the control condition is determined by the combination of the value range of the two battery variables, considering multiple factors affecting the battery temperature, which can reduce the false influence of a single variable on thermal management, and help to achieve precise control of battery thermal management.

[0124] In the embodiments of the present application, the control condition can include a first condition and a second condition. The first condition is used to indicate entering a control gear, and the second condition is used to indicate jumping to an adjacent gear of the control gear.

[0125] In some implementations of determining the first condition, it can include:

[0126] According to the preset control gear, the first range is divided into at least one numerical interval, and the first numerical interval corresponding to each control gear is obtained;

[0127] According to the control gear, the second range is divided into at least one numerical interval, and the second numerical interval corresponding to each control gear is obtained;

[0128] According to the first numerical interval and the second numerical interval corresponding to each control gear, the first condition in the control condition of each control gear is generated.

[0129] The first condition corresponding to the control gear is used to indicate entering the control gear.

[0130] In order to achieve more precise control of battery thermal management, optionally, the number of control gears is greater than 1.

[0131] It can be understood that the more control gears, the more smooth and precise the control of thermal management will be. Especially for one-to-many charging piles, when the charging state of other several charging guns changes, the charging current of the user's vehicle increases. In this case, using multiple control gears can more quickly and accurately intervene in thermal management to improve the time proportion of working in the temperature range of the maximum charging rate during supercharging, which is beneficial to improve the charging speed of supercharging.

[0132] For example, referring to FIG. 3, it is a schematic diagram of the control gear provided by the embodiments of the present application. As an example but not limitation, as shown in FIG. 3, it includes three control gears: the lowest gear (or called gear one), the middle gear (or called gear two) and the highest gear (or called gear three).

[0133] Correspondingly, the first range is divided into three numerical intervals, and each numerical interval corresponds to a control gear. For example, the first numerical interval corresponding to the lowest gear is (t0℃, t1℃], the first numerical interval corresponding to the middle gear is (t1℃, t2℃], and the first numerical interval corresponding to the highest gear is (t2℃, tmax℃]. Wherein, t0 is greater than or equal to T1, T1 is a preset temperature; tmax is the maximum value of the first range.

[0134] Correspondingly, the second range is divided into three numerical intervals, and each numerical interval corresponds to a control gear. For example, the second numerical interval corresponding to the lowest gear is [Cmin, C1], the second numerical interval corresponding to the middle gear is (C1, C2], and the second numerical interval corresponding to the highest gear is (C2, Cmax]. Wherein, Cmin is the minimum value of the second range, and Cmax is the maximum value of the second range.

[0135] After the first numerical interval and the second numerical interval are combined, it can be:

[0136] The first condition corresponding to the lowest gear includes t∈(t0℃, t1℃] and Ic∈[Cmin, C1].

[0137] The first condition corresponding to the middle gear includes t∈(t1℃, t2℃] and Ic∈(C1, C2].

[0138] The first condition corresponding to the highest gear includes t∈(t2℃, Tmax℃] and Ic∈(C2, Cmax].

[0139] Wherein, t is the monitoring value of the battery temperature (the first variable), and Ic is the monitoring value of the charging rate (the second variable).

[0140] In the above examples, the first condition corresponding to each control gear is the and combination of the first numerical interval and the second numerical interval corresponding to the control gear.

[0141] In some implementations, the first condition corresponding to at least one control gear can be the and combination of the first numerical interval and the second numerical interval corresponding to the control gear, and the first condition corresponding to at least one control gear can be the or combination of the first numerical interval and the second numerical interval corresponding to the control gear. For the first condition corresponding to other gears, it can be the and combination of the first numerical interval and the second numerical interval corresponding to the gear, or the or combination of the first numerical interval and the second numerical interval corresponding to the gear.

[0142] Continuing the above example, the first condition corresponding to the lowest gear can be a combination of the first value interval and the second value interval corresponding to the highest gear, and the first condition corresponding to the highest gear can be a combination of the first value interval and the second value interval corresponding to the highest gear. For the first condition corresponding to the middle gear, it can be a combination of the first value interval and the second value interval corresponding to the middle gear, or a combination of the first value interval and the second value interval corresponding to the middle gear.

[0143] For example, the first condition corresponding to each gear after combination is as follows:

[0144] The first condition corresponding to the lowest gear includes t∈(t0℃, t1℃] and Ic∈[Cmin, C1].

[0145] The first condition corresponding to the middle gear includes t∈(t1℃, t2℃] and Ic∈(C1, C2], or the first condition includes t∈(t1℃, t2℃] or Ic∈(C1, C2].

[0146] The first condition corresponding to the highest gear includes t∈(t2℃, Tmax℃] and Ic∈(C2, Cmax].

[0147] It can be understood that when the first condition corresponding to the control gear is a combination of the first value interval and the second value interval corresponding to the control gear, it means that the monitoring values of the two variables of the battery need to satisfy the respective value intervals at the same time to trigger the corresponding control gear. Since the values of the first value interval and the second value interval corresponding to the lowest gear are relatively small, in this case, setting the first condition corresponding to the lowest gear as a combination of the first value interval and the second value interval can make the battery temperature not immediately intervene in thermal management when the battery is charged at a medium-low charging rate in a relatively low temperature interval (such as the first value interval corresponding to the lowest gear), and only when the battery temperature rises to a medium-high temperature interval (such as the first value interval corresponding to the middle gear or the highest gear) or the battery is charged at a medium-high charging rate, the thermal management will be intervened, thereby effectively increasing the proportion of time that the battery works in the temperature interval of the maximum charging rate during the supercharging process, which is beneficial to improving the charging speed of supercharging.

[0148] When the first condition corresponding to the control gear is an or combination of the first numerical interval and the second numerical interval corresponding to the control gear, it means that either of the monitoring values of the two variables of the battery satisfies the respective numerical interval, and the corresponding control gear is triggered. Since the numerical values of the first numerical interval and the second numerical interval corresponding to the highest gear are relatively large, in this case, the first condition corresponding to the highest gear is set to an or combination of the first numerical interval and the second numerical interval, which can quickly intervene in thermal management when the battery temperature is high or the charging rate is large after the supercharging starts, thereby controlling the rapid increase of the battery temperature, and effectively increasing the proportion of time that the battery works in the temperature interval of the maximum charging rate during the supercharging process, which is beneficial to improving the charging speed of the supercharging.

[0149] In some implementations of determining the second condition, the following can be included:

[0150] According to the first numerical interval corresponding to each control gear, a third numerical interval corresponding to each control gear is determined;

[0151] According to the second numerical interval corresponding to each control gear, a fourth numerical interval corresponding to each control gear is determined;

[0152] According to the combination of the third numerical interval and the fourth numerical interval corresponding to each control gear, a second condition in the control condition of each control gear is generated.

[0153] The second condition corresponding to the control gear is used to indicate a jump to an adjacent gear of the control gear.

[0154] It can be understood that for the intermediate gear, there are two adjacent gears, and therefore there are two second conditions corresponding to the intermediate gear, one second condition is used to indicate a jump from the intermediate gear to an adjacent high gear, and the other second condition is used to indicate a jump from the intermediate gear to an adjacent low gear. For the lowest gear and the highest gear, there is only one adjacent gear, and therefore there is one second condition corresponding to the lowest gear and the highest gear. For the lowest gear, the second condition corresponding to the lowest gear is used to indicate a jump from the lowest gear to an adjacent intermediate gear; for the highest gear, the second condition corresponding to the highest gear is used to indicate a jump from the highest gear to an adjacent intermediate gear.

[0155] Optionally, in the case where the second condition corresponding to the first gear is used to indicate a jump to the second gear, the minimum value of the first numerical interval in the first condition corresponding to the first gear is greater than the maximum value of the third numerical interval in the second condition corresponding to the first gear; and the minimum value of the second numerical interval in the first condition corresponding to the first gear is greater than the maximum value of the fourth numerical interval in the second condition corresponding to the first gear.

[0156] In a case where the second condition corresponding to the first gear is used to indicate a jump to the third gear, a maximum value of the first value interval in the first condition corresponding to the first gear is less than a minimum value of the third value interval in the second condition corresponding to the first gear; and a maximum value of the second value interval in the first condition corresponding to the first gear is less than a minimum value of the fourth value interval in the second condition corresponding to the first gear.

[0157] The first gear is any one control gear, the second gear is a neighboring gear of the first gear and has a control level lower than that of the first gear, and the third gear is a neighboring gear of the first gear and has a control level higher than that of the first gear.

[0158] Continuing with the above example of three control gears, the following applies:

[0159] The first condition corresponding to the lowest gear includes t∈(t0℃, t1℃] and Ic∈[Cmin, C1]. According to the first condition, the second condition corresponding to the lowest gear includes t>t1plus℃ (the third value interval) or Ic>C1plus (the fourth value interval). Here, t1plus is greater than t1, and C1plus is greater than C1.

[0160] The first condition corresponding to the middle gear includes t∈(t1℃, t2℃] and Ic∈(C1, C2]. Since the middle gear is an intermediate gear, it corresponds to two second conditions.

[0161] According to the first condition corresponding to the middle gear, the first second condition A corresponding to the middle gear includes t∈(t0℃, t1minus℃] (the third value interval) and Ic∈[Cmin, C1minus) (the fourth value interval). Here, t1minus is less than t1, and C1minus is less than C1.

[0162] According to the first condition corresponding to the middle gear, the second second condition B corresponding to the middle gear includes t∈(t2℃, Tmax℃] (the third value interval) or Ic∈(C2, Cmax] (the fourth value interval).

[0163] The first condition corresponding to the highest gear includes t∈(t2℃, Tmax℃] or Ic∈(C2, Cmax]. According to the first condition, the second condition corresponding to the highest gear includes t∈(t1℃, t2minus℃] (the third value interval) and Ic∈(C1, C2minus) (the fourth value interval). Here, t2minus is less than t2, and C2minus is less than C2.

[0164] In the above example, the first gear is the middle gear, the second gear is the lowest gear, and the third gear is the highest gear. As can be seen from the above example, the minimum value t1 of the first numerical interval in the first condition corresponding to the middle gear is greater than the maximum value t1minus of the third numerical interval in the second condition corresponding to the middle gear; the minimum value C1 of the second numerical interval in the first condition corresponding to the middle gear is greater than the maximum value C1minus of the fourth numerical interval in the second condition corresponding to the middle gear. The maximum value t2 of the first numerical interval in the first condition corresponding to the middle gear is less than the minimum value of the third numerical interval in the second condition corresponding to the middle gear; the maximum value C2 of the second numerical interval in the first condition corresponding to the middle gear is less than the minimum value of the fourth numerical interval in the second condition corresponding to the middle gear.

[0165] It can be understood that if the difference between the critical values of adjacent gears is too large, the control accuracy is low; if the difference between the critical values of adjacent gears is too small, the gear switching is more frequent. Through the above manner, the difference between the critical values of adjacent gears is greater than 0, so that the jump between adjacent gears will not be too frequent, and the control accuracy can also be improved.

[0166] Optionally, the difference between the temperature critical values of adjacent gears can be 3℃.

[0167] Exemplarily, the critical values of each gear are shown in Table 2.

[0168] Table 2

[0169] It should be noted that the value range of the first condition and the second condition in the example of FIG. 3 is only an example, and the critical values of the first condition and the second condition are not specifically limited in the embodiments of the present application, and can be set according to actual needs.

[0170] Based on the above control conditions, the control process in S202 is introduced below.

[0171] In some embodiments, S202 can include:

[0172] Obtaining the control parameter of the thermal management device corresponding to each control gear;

[0173] Obtaining the monitoring data of the battery, wherein the monitoring data includes the monitoring value of the first variable and the monitoring value of the second variable;

[0174] Controlling the thermal management device of the battery according to the monitoring data, the control condition corresponding to each control gear, and the control parameter.

[0175] Exemplarily, in the case where the thermal management device 15 includes a circulating pump and a cooler, the control parameter of the thermal management device 15 can include the flow of the cooling liquid and the target water temperature. As shown in Table 3, an example of the control parameter corresponding to each gear is shown.

[0176] Table 3

[0177] In this way, different control parameters are set for each control gear, and when the control condition corresponding to the different control gears is met, the heat management can be performed according to the current state of the battery, which helps to achieve more accurate control.

[0178] In some implementations, the battery heat management device is controlled according to the monitoring data, the control condition corresponding to each control gear, and the control parameter, including: if the monitoring data meets the first condition corresponding to the control gear, the heat management device is controlled according to the control parameter corresponding to the control gear.

[0179] For example, as shown in FIG. 3, if t∈(t0℃, t1℃] and Ic∈[Cmin, C1], i.e., the first condition corresponding to the lowest gear is met, the heat management device is controlled according to the control parameter corresponding to the lowest gear.

[0180] If t∈(t1℃, t2℃] and Ic∈(C1, C2], i.e., the first condition corresponding to the middle gear is met, the heat management device is controlled according to the control parameter corresponding to the middle gear.

[0181] If t∈(t2℃, Tmax℃] and Ic∈(C2, Cmax], i.e., the first condition corresponding to the highest gear is met, the heat management device is controlled according to the control parameter corresponding to the highest gear.

[0182] In this way, when the control condition corresponding to the different control gears is met, the heat management can be performed according to the control parameter corresponding to the control gear, which helps to achieve more accurate control.

[0183] In some embodiments, the method further includes:

[0184] In the process of controlling the heat management device according to the control parameter corresponding to the control gear, if the monitoring data meets the second condition of the control gear, the heat management device is controlled according to the control parameter corresponding to the adjacent gear of the control gear.

[0185] In the process of controlling the heat management device according to the control parameter corresponding to the control gear, if the monitoring data does not meet the first condition of the control gear and does not meet the second condition of the control gear, the heat management device is turned off.

[0186] For example, continuing the example in FIG. 3, in the process of controlling the heat management device according to the control parameter corresponding to the lowest gear, if t∈[T1℃, t0minus℃), the current monitoring data does not meet the first condition of the lowest gear and does not meet the second condition of the lowest gear, the heat management device is turned off. Wherein, t0minus is less than t0.

[0187] It can be understood that, since the values of the control conditions of the middle and highest levels are higher than the value of the control condition of the lowest level, when the monitoring data does not satisfy the control condition of the lowest level, the control conditions of the middle and highest levels are also not satisfied.

[0188] If t > t1plus℃ or Ic > C1plus, the lowest level is jumped to the middle level, and the thermal management device is controlled according to the control parameters corresponding to the middle level.

[0189] In the process of controlling the thermal management device according to the control parameters corresponding to the middle level, if t ∈ (t0℃, t1minus℃] and Ic ∈ [C1min, C1minus), the middle level is jumped to the lowest level, and the thermal management device is controlled according to the control parameters corresponding to the lowest level; if t ∈ (t2℃, Tmax℃] or Ic ∈ (C2, Cmax], the middle level is jumped to the highest level, and the thermal management device is controlled according to the control parameters corresponding to the highest level.

[0190] In the process of controlling the thermal management device according to the control parameters corresponding to the highest level, if t ∈ (t1℃, t2minus℃] and Ic ∈ (C1, C2minus), the highest level is jumped to the middle level, and the thermal management device is controlled according to the control parameters corresponding to the middle level.

[0191] In the above manner, the gear can be flexibly switched in the thermal management process, so as to realize flexible control of the thermal management device.

[0192] For example, referring to FIG. 4, which is a flowchart of a thermal management method provided by an embodiment of the present application. As an example but not limitation, as shown in FIG. 4, the flow of the thermal management method can include the following steps:

[0193] S401, detecting whether it is super-charging.

[0194] If it is not super-charging, the thermal management flow of ordinary charging (or slow charging) is performed.

[0195] In one detection manner, it can be judged by the type of the charging gun. For example, if the charging gun is a direct-current charging gun, it is determined to be super-charging; if the charging gun is an alternating-current charging gun, it is determined to be ordinary charging or slow charging.

[0196] S402, if it is super-charging, it is judged whether the current battery temperature is greater than a preset temperature.

[0197] If the current battery temperature is less than or equal to the preset temperature, the battery temperature is continuously monitored.

[0198] S403, if the current battery temperature is greater than the preset temperature, it is judged whether the first condition of the highest level is satisfied.

[0199] If the first condition of the highest level is satisfied, S404 is executed; otherwise, S406 is executed.

[0200] S404, if the first condition of the highest level is satisfied, controlling the thermal management device according to the control parameter of the highest level.

[0201] S405, in the process of controlling the thermal management device according to the control parameter of the highest level, detecting whether the second condition of the highest level is satisfied.

[0202] If the second condition of the highest level is satisfied, S407 is executed; otherwise, it continues to detect whether the second condition of the highest level is satisfied, and continues to control the thermal management device according to the control parameter of the highest level.

[0203] S406, if the first condition of the highest level is not satisfied, judging whether the first condition of the middle level is satisfied.

[0204] If the first condition of the middle level is satisfied, S407 is executed; otherwise, S409 is executed.

[0205] S407, if the first condition of the middle level is satisfied, controlling the thermal management device according to the control parameter corresponding to the middle level.

[0206] S408, in the process of controlling the thermal management device according to the control parameter corresponding to the middle level, judging whether the second condition A of the middle level is satisfied.

[0207] If the second condition A of the middle level is satisfied, S404 is executed; otherwise, it continues to detect whether the second condition of the middle level is satisfied, and continues to control the thermal management device according to the control parameter corresponding to the middle level.

[0208] S409, in the process of controlling the thermal management device according to the control parameter corresponding to the middle level, judging whether the second condition B of the middle level is satisfied.

[0209] If the second condition B of the middle level is satisfied, S411 is executed; otherwise, it continues to detect whether the second condition of the middle level is satisfied, and continues to control the thermal management device according to the control parameter corresponding to the middle level.

[0210] S410, if the first condition of the middle level is not satisfied, judging whether the first condition of the lowest level is satisfied.

[0211] If the first condition of the lowest level is satisfied, S411 is executed; otherwise, S413 is executed.

[0212] S411, controlling the thermal management device according to the control parameter corresponding to the lowest level.

[0213] S412, in the process of controlling the thermal management device according to the control parameter corresponding to the lowest level, judging whether the second condition of the lowest level is satisfied.

[0214] If the second condition of the lowest level is met, S407 is performed; otherwise, it is continuously detected whether the second condition of the lowest level is met, and the heat management device is controlled according to the control parameter corresponding to the lowest level.

[0215] S413, if the first condition of the lowest level is not met, the heat management device is turned off.

[0216] It should be noted that FIG. 4 is only an example of the execution flow of the heat management method. In FIG. 4, it is equivalent to judging from the highest level first. In other embodiments, it can also be judged from the lowest level first. In still other embodiments, the three levels can be judged in parallel. The embodiments of the present application do not make specific limitations on this.

[0217] It should be understood that the size of the serial number of each step in the above embodiments does not mean the order of execution, and the execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0218] FIG. 5 is a structural schematic diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 5, the terminal device 5 of this embodiment includes at least one processor 50 (only one is shown in FIG. 5), a memory 51, and a computer program 52 stored in the memory 51 and executable on the at least one processor 50, wherein the processor 50 implements the steps in any of the above control method embodiments when executing the computer program 52.

[0219] The terminal device can be a desktop computer, a notebook computer, a palm computer, a cloud server, and other computing devices. The terminal device can include, but is not limited to, a processor and a memory. Those skilled in the art can understand that FIG. 5 is only an example of the terminal device 5, and does not constitute a limitation on the terminal device 5, and can include more or fewer components than those shown, or combine certain components, or different components, for example, it can also include input / output devices, network access devices, etc.

[0220] The processor 50 can be a central processing unit (CPU), and the processor 50 can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0221] The memory 51 can be an internal storage unit of the terminal device 5, such as a hard disk or a memory of the terminal device 5 in some embodiments. The memory 51 can also be an external storage device of the terminal device 5, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the terminal device 5 in other embodiments. Further, the memory 51 can include both the internal storage unit and the external storage device of the terminal device 5. The memory 51 is used to store an operating system, an application program, a boot loader, data, and other programs, such as program codes of the computer program, etc. The memory 51 can also be used to temporarily store data that has been output or will be output.

[0222] The computer readable storage medium stores the computer program, and the computer program is executed by the processor to implement the steps in each of the above method embodiments.

[0223] The computer program product is run on the terminal device, so that the terminal device executes the steps in each of the above method embodiments.

[0224] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the present application implements all or part of the processes in the above embodiments, which can be completed by instructing related hardware through a computer program. The computer program can be stored in a computer readable storage medium, and the computer program, when executed by a processor, can implement the steps in each of the above method embodiments. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or some intermediate forms. The computer readable medium at least includes any entity or device capable of carrying the computer program code to the device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. For example, a U disk, a mobile hard disk, a magnetic disk or an optical disk, etc. In some jurisdictions, according to legislation and patent practice, the computer readable medium cannot be an electrical carrier signal and a telecommunications signal.

[0225] In the above embodiments, the description of each embodiment is focused on, and the part not described or recorded in a certain embodiment can be referred to the relevant description of other embodiments.

[0226] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0227] In the embodiments provided in the present application, it should be understood that the disclosed apparatus / terminal device and method can be implemented by other ways. For example, the apparatus / terminal device embodiments described above are only schematic, for example, the division of the modules or units is only a logical function division, and there can be another division way in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection between each other can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0228] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0229] The above described embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A thermal management method, characterized by, The method comprises: obtaining a control condition, wherein the control condition is determined according to a combination relationship between a value range of a first variable of a battery and a value range of a second variable of the battery; controlling a thermal management device of the battery according to the control condition.

2. The thermal management method of claim 1, wherein, The obtaining of the control condition comprises: obtaining the value range of the first variable of the battery to obtain a first range; obtaining the value range of the second variable of the battery to obtain a second range; determining the control condition according to a combination relationship between the first range and the second range.

3. The thermal management method of claim 2, wherein, The determining of the control condition according to the combination relationship between the first range and the second range comprises: dividing the first range into at least one numerical interval according to a preset control gear to obtain a first numerical interval corresponding to each control gear; dividing the second range into at least one numerical interval according to the control gear to obtain a second numerical interval corresponding to each control gear; combining the first numerical interval and the second numerical interval corresponding to each control gear to generate a first condition in the control condition of each control gear; wherein the first condition corresponding to the control gear is used to indicate entering the control gear.

4. The thermal management method of claim 3, wherein, The determining of the control condition according to the combination relationship between the first range and the second range comprises: determining a third numerical interval corresponding to each control gear according to the first numerical interval corresponding to each control gear; determining a fourth numerical interval corresponding to each control gear according to the second numerical interval corresponding to each control gear; combining the third numerical interval and the fourth numerical interval corresponding to each control gear to generate a second condition in the control condition of each control gear; wherein the second condition corresponding to the control gear is used to indicate jumping to an adjacent gear of the control gear.

5. The thermal management method of claim 4, wherein, For at least one control gear, the first condition corresponding to the control gear is that a monitored value of the first variable meets the first numerical interval corresponding to the control gear and a monitored value of the second variable meets the second numerical interval corresponding to the control gear.

6. The thermal management method of claim 4, wherein, For at least one control gear, the second condition corresponding to the control gear is that the monitored value of the first variable meets the first numerical interval corresponding to the control gear or the monitored value of the second variable meets the second numerical interval corresponding to the control gear.

7. The thermal management method of claim 4, wherein, For at least one control gear, the first condition corresponding to the control gear is that the monitored value of the first variable meets the first numerical interval corresponding to the control gear or the monitored value of the second variable meets the second numerical interval corresponding to the control gear.

8. The thermal management method of claim 4, wherein, For at least one control gear, the second condition corresponding to the control gear is that the monitored value of the first variable meets the first numerical interval corresponding to the control gear or the monitored value of the second variable meets the second numerical interval corresponding to the control gear.

9. The thermal management method of claim 4, wherein, In a case where the second condition corresponding to the first gear is used to indicate jumping to the second gear, a minimum value of the first numerical interval in the first condition corresponding to the first gear is greater than a maximum value of the third numerical interval in the second condition corresponding to the first gear. A minimum value of the second numerical interval in the first condition corresponding to the first gear is greater than a maximum value of the fourth numerical interval in the second condition corresponding to the first gear; The first gear is any one of the control gears, and the third gear is an adjacent gear of the first gear and has a higher control level than the first gear.

10. The thermal management method of claim 4, wherein, In a case where the second condition corresponding to the first gear is used to indicate a jump to a third gear, a maximum value of the first numerical interval in the first condition corresponding to the first gear is less than a minimum value of the third numerical interval in the second condition corresponding to the first gear; A maximum value of the second numerical interval in the first condition corresponding to the first gear is less than a minimum value of the fourth numerical interval in the second condition corresponding to the first gear; The first gear is any one of the control gears, and the third gear is an adjacent gear of the first gear and has a higher control level than the first gear.

11. The thermal management method according to any one of claims 4 to 10, characterized in that, The control of the thermal management device of the battery according to the control condition comprises: Obtaining a control parameter of the thermal management device corresponding to each control gear; Obtaining monitoring data of the battery, wherein the monitoring data comprises a monitoring value of the first variable and a monitoring value of the second variable; Controlling the thermal management device of the battery according to the monitoring data, the control condition and the control parameter corresponding to each control gear.

12. The method of claim 11, wherein, The control of the thermal management device of the battery according to the monitoring data, the control condition and the control parameter corresponding to each control gear comprises: If the monitoring data satisfies the first condition corresponding to the control gear, the thermal management device is controlled according to the control parameter corresponding to the control gear.

13. The thermal management method of claim 12, wherein, The method further comprises: In the process of controlling the thermal management device according to the control parameter corresponding to the control gear, if the monitoring data satisfies the second condition of the control gear, the thermal management device is controlled according to the control parameter corresponding to the adjacent gear of the control gear.

14. The thermal management method of claim 12, wherein, The method further comprises: In the process of controlling the thermal management device according to the control parameter corresponding to the control gear, if the monitoring data does not satisfy the first condition of the control gear and does not satisfy the second condition of the control gear, the thermal management device is turned off.

15. The thermal management method of any one of claims 3 to 14, wherein, The number of control gears is greater than 1.

16. The thermal management method of any one of claims 1 to 15, wherein, The first variable is the temperature of the battery.

17. The thermal management method of any one of claims 1 to 16, wherein, The second variable is the charging current of the battery.

18. The thermal management method of any one of claims 1 to 17, wherein, The control condition comprises: If a preset condition is satisfied when the battery is in a first charging mode, the control condition is obtained; The charging mode of the battery comprises the first charging mode and a second charging mode, and the charging power of the first charging mode is higher than that of the second charging mode.

19. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the thermal management method of any one of claims 1 to 18.

20. A computer-readable storage medium, the computer-readable storage medium storing a computer program, characterized in that, The computer program is executed by the processor to implement the thermal management method of any one of claims 1 to 18.

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