Battery cooling control method, device and terminal equipment

Abstract

The present application is applicable to the field of battery charging technology, and provides a battery cooling control method, device and terminal equipment. The battery cooling control method includes: obtaining a first temperature value, a second temperature value, a third temperature value and a remaining power value of the battery; the first temperature value is the temperature value of the battery's surrounding environment, the second temperature value is the temperature value of the battery body, and the third temperature value is the temperature value of the oil; when the remaining power value is less than the first preset power value, the first temperature value is less than the first preset temperature value, and the second temperature value is greater than or equal to the second preset temperature value, determining the target speed of the compressor according to the third temperature value; controlling the compressor to adjust the speed to the target speed. The battery cooling control method provided in this embodiment can realize the control of the compressor to operate at the optimal speed, prevent damage to the compressor, and thus increase the service life of the compressor.

Description

Technical Field

[0001] The present application belongs to the field of battery charging technology, and in particular, relates to a battery temperature reduction control method, device and terminal equipment. Background Art

[0002] The batteries of new energy vehicles have temperature requirements, generally requiring the battery temperature to be between 25℃-35℃, which means that the battery needs to be cooled in summer and heated in winter.

[0003] The inventor found that because the battery has the function of heat preservation or heating, the temperature of the battery can reach about 10°C in winter. In addition, the premise of fast charging of the battery is that the temperature of the battery must reach a temperature that can be fast charged (about 10°C). Therefore, whether it is winter or summer, the starting temperature point of fast charging of the battery is roughly the same, and the required cooling amount of the battery is roughly the same. Even when charging the battery in winter, it is necessary to cool it down. However, when cooling the battery in winter, if the air conditioner is used to cool the battery, at low temperatures (for example, the ambient temperature is about -5°C), the oil inside the air conditioning system has poor fluidity due to the low temperature. If the compressor is still running at the rated speed, it will cause damage to the compressor and affect the service life of the compressor. Summary of the invention

[0004] The embodiments of the present application provide a battery cooling control method, device and terminal equipment, which can solve the problem of damage caused by the compressor running at the rated speed due to poor oil fluidity when using air conditioning to cool the battery in winter.

[0005] In a first aspect, an embodiment of the present application provides a battery temperature reduction control method, comprising:

[0006] Acquire a first temperature value, a second temperature value, a third temperature value and a remaining power value of the battery; the first temperature value is a temperature value of the surrounding environment of the battery, the second temperature value is a temperature value of the battery body, and the third temperature value is a temperature value of the oil;

[0007] When the remaining power value is less than a first preset power value, the first temperature value is less than a first preset temperature value, and the second temperature value is greater than or equal to a second preset temperature value, determining a target speed of the compressor according to the third temperature value;

[0008] The compressor is controlled to adjust the rotation speed to the target rotation speed.

[0009] In a possible implementation manner of the first aspect, the battery temperature reduction control method further includes:

[0010] When the remaining power value is less than a first preset power value, the first temperature value is greater than or equal to a third preset temperature value, and the second temperature value is greater than or equal to a fourth preset temperature value, the rated speed of the compressor is determined to be the target speed.

[0011] In a possible implementation manner of the first aspect, the battery temperature reduction control method further includes:

[0012] When the remaining power value is less than a first preset power value, the first temperature value is between the first preset temperature value and a third preset temperature value, and the second temperature value is greater than or equal to a fourth preset temperature value, the motor radiator is controlled to cool the battery.

[0013] In a possible implementation manner of the first aspect, the battery temperature reduction control method further includes:

[0014] When the remaining power value is less than a second preset power value and the second temperature value is greater than or equal to a fourth preset temperature value, the charging power of the battery is controlled to be reduced.

[0015] In a possible implementation manner of the first aspect, the acquiring the first temperature value, the second temperature value, the third temperature value, and the remaining power value of the battery includes:

[0016] Determine whether the battery plug function is activated;

[0017] When the battery plug function is activated, the first temperature value, the second temperature value, the third temperature value and the remaining power value are acquired.

[0018] In a possible implementation manner of the first aspect, controlling the compressor to adjust the speed to the target speed includes:

[0019] Controlling the compressor to start, and obtaining the real-time rotation speed of the compressor;

[0020] When the real-time rotation speed is greater than the target rotation speed, the rotation speed of the compressor is controlled to decrease from the real-time rotation speed to the target rotation speed.

[0021] In a possible implementation manner of the first aspect, determining the target speed of the compressor according to the third temperature value includes:

[0022] determining a target temperature range according to the third temperature value;

[0023] The corresponding target rotation speed is determined according to the target temperature range.

[0024] In a second aspect, an embodiment of the present application provides a battery temperature reduction control device, comprising:

[0025] an acquisition module, used to acquire a first temperature value, a second temperature value, a third temperature value and a remaining power value of the battery; the first temperature value is a temperature value of the environment surrounding the battery, the second temperature value is a temperature value of the battery body, and the third temperature value is a temperature value of the oil;

[0026] a first target speed determination module, configured to determine a target speed of the compressor according to the third temperature value when the remaining power value is less than a first preset power value, the first temperature value is less than a first preset temperature value, and the second temperature value is greater than or equal to a second preset temperature value;

[0027] The first control module is used to control the compressor to adjust the speed to the target speed.

[0028] In a third aspect, an embodiment of the present application provides a terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any one of the methods described in the first aspect when executing the computer program.

[0029] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the first aspects is implemented.

[0030] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when executed on a terminal device, enables the terminal device to execute any of the methods described in the first aspect above.

[0031] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0032] When the remaining power value is less than the first preset power value, the battery can be quickly charged. The first temperature value is less than the first preset temperature value, which means that the ambient temperature at this time is low. When the second temperature value is greater than or equal to the second preset temperature value, it means that the temperature of the battery body is high and needs to be cooled. Then, the target speed of the compressor is determined according to the third temperature value (the temperature value of the oil), and finally the compressor is controlled to operate at the target speed to cool the battery, ensuring that the compressor runs at the optimal speed, preventing damage caused by excessively high speed of the compressor, and thus increasing the service life of the compressor.

[0033] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 is a flow chart of a battery temperature reduction control method provided in an embodiment of the present application;

[0036] Figure 2 is a flow chart of a battery temperature reduction control method provided by another embodiment of the present application;

[0037] Figure 3 is a flow chart of a battery temperature reduction control method provided by another embodiment of the present application;

[0038] Figure 4 is a flow chart of a battery temperature reduction control method provided by another embodiment of the present application;

[0039] Figure 5 is a flow chart of a battery temperature reduction control method provided by another embodiment of the present application;

[0040] Figure 6 is a structural schematic diagram of a battery temperature reduction control device provided in an embodiment of the present application;

[0041] Figure 7 It is a schematic diagram of the structure of the terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0043] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0044] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0045] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0046] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0047] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0048] Figure 1 FIG. 1 is a flow chart of a battery temperature reduction control method provided by an embodiment of the present application. Figure 1 As shown, the battery temperature reduction control method includes steps S101 to S103.

[0049] Step S101, obtaining a first temperature value, a second temperature value, a third temperature value and a remaining power value of the battery; the first temperature value is the temperature value of the environment surrounding the battery, the second temperature value is the temperature value of the battery body, and the third temperature value is the temperature value of the oil.

[0050] Specifically, the first temperature value, the second temperature value, and the third temperature value may be acquired by a temperature sensor installed on the vehicle, and the remaining power value of the battery may be acquired by a battery parameter detection device installed on the vehicle.

[0051] In one embodiment of the present application, step S101 includes step S1010 and step S1011.

[0052] Step S1010, determining whether the battery plug function is activated.

[0053] Step S1011, when the battery plug function is activated, obtaining a first temperature value, a second temperature value, a third temperature value and a remaining power value.

[0054] Specifically, when the battery is connected to the charging pile, the charging pile exchanges information with the controller on the vehicle. The controller on the vehicle detects whether the battery plug function is activated. When the battery plug function is activated, the charging pile can quickly charge the battery. At this time, the controller on the vehicle starts to obtain the first temperature value, the second temperature value, the third temperature value and the remaining power value to realize the control of the battery charging.

[0055] Step S102, when the remaining power value is less than the first preset power value, the first temperature value is less than the first preset temperature value, and the second temperature value is greater than or equal to the second preset temperature value, determine the target speed of the compressor according to the third temperature value.

[0056] Specifically, when the remaining power value is less than the first preset power value, the battery can be quickly charged. Designers can set the specific value of the first preset power value according to actual conditions, for example, the first preset power value is set to 95% of the rated capacity of the battery. When the remaining power value of the detected battery is less than 95%, the battery can be quickly charged, which may cause the temperature of the battery body to be too high. When the temperature of the battery body is too high, the battery needs to be cooled down.

[0057] The first temperature value is the temperature value of the environment around the battery, that is, the temperature value of the environment. By collecting the first temperature value and comparing the first temperature value with the first preset temperature value, it can be determined whether the ambient temperature at this time is too low, thereby judging whether there is a hidden danger of damage when the compressor is working at a high speed. If the first temperature value is less than the first preset temperature value, it means that the ambient temperature at this time is low, which may cause the fluidity of the oil inside the compressor to deteriorate. If the compressor works at a high speed, it will cause damage to the compressor. Among them, the designer can set the specific value of the first preset temperature value according to the actual situation, for example, setting the first preset temperature value to -5°C. When the collected first temperature value is less than -5°C, it means that the ambient temperature at this time is low, and there is a hidden danger of damage to the compressor when working at a high speed.

[0058] The second temperature value is the temperature value of the battery body. When the battery is charged, the temperature of the battery body will gradually increase. If the temperature of the battery body is too high, it will cause damage to the battery. Therefore, when the temperature of the battery body is too high, the battery body needs to be cooled down. The second temperature value can be obtained by a temperature sensor installed on the battery body. When the second temperature value is greater than or equal to the second preset temperature value, it means that the temperature of the battery body is too high, and the battery body needs to be cooled down.

[0059] The second temperature value is less than the critical temperature value when the battery needs to be cooled down. Designers can set the specific value of the second preset temperature value according to actual conditions. For example, when the critical temperature value for cooling the battery is 35°C, when the temperature value of the battery body is greater than or equal to 35°C, the battery body needs to be cooled down; when the temperature value of the battery body is less than 35°C, the battery body does not need to be cooled down. At this time, the second temperature value can be set to 20°C. When the battery is quickly charged in a low temperature environment, when the second temperature value (the temperature value of the battery body) is greater than or equal to 20°C, the compressor is controlled to cool down the battery body, thereby achieving early cooling of the battery body and allowing the compressor to work at a lower speed to cool down the battery body.

[0060] When the remaining power value is less than the first preset power value, the first temperature value is less than the first preset temperature value, and the second temperature value is greater than or equal to the second preset temperature value, it means that when the battery is fast charged in a low temperature environment, the temperature of the battery body is too high, and the compressor needs to be controlled to start the refrigeration system to cool the battery body. At this time, the target speed of the compressor is determined according to the third temperature value, and the target speed of the compressor is determined according to the temperature value of the oil, which can ensure that the compressor works at an appropriate speed and prevent damage caused by excessive compressor speed. The lower the third temperature value (the temperature value of the oil), the smaller the target speed is; the higher the third temperature value, the larger the target speed is.

[0061] In one embodiment of the present application, step S102 includes step S1021 and step S1022.

[0062] Step S1021, determining a target temperature range according to the third temperature value.

[0063] Step S1022, determining the corresponding target rotation speed according to the target temperature range.

[0064] Specifically, the designer can obtain the corresponding relationship between the oil temperature range and the compressor speed through the test method, that is, each oil temperature range corresponds to a compressor speed, and then store the corresponding relationship. When controlling the compressor, first determine the temperature range where the third temperature is located, and the determined temperature range is the target temperature range. When the target temperature range is determined, the corresponding target speed is determined through the corresponding relationship, thereby achieving the determination of the target speed.

[0065] Exemplarily, the corresponding relationship between the oil temperature range and the compressor speed is as follows:

[0066] Oil temperature range ≤-10℃ -10℃～-5℃ -5℃～-0℃ 0℃～10℃ ≥10℃ Compressor speed 1000rpm 1500rpm 2000rpm 5000rpm 6000rpm

[0067] When the third temperature value is -2°C, the target rotation speed of the compressor is determined to be 1000 rpm; when the third temperature value is 5°C, the target rotation speed is determined to be 5000 rpm.

[0068] Step S103, controlling the compressor to adjust the speed to the target speed.

[0069] Specifically, when the target speed is determined, the compressor is controlled to adjust the speed to the target speed, so that the compressor can operate at a suitable speed and prevent the compressor from being damaged due to excessively high speed.

[0070] In one embodiment of the present application, step S103 includes step S1031 and step S1032.

[0071] Step S1031, control the compressor to start, and obtain the real-time speed of the compressor.

[0072] Step S1032: when the real-time speed is greater than the target speed, the speed of the compressor is controlled to decrease from the real-time speed to the target speed.

[0073] Specifically, when the target speed of the compressor is determined, the compressor is controlled to start. After the compressor is started, the real-time speed of the compressor is obtained. When the real-time speed of the compressor is greater than the target speed, the speed of the compressor is controlled to decrease from the real-time speed to the target speed; when the speed of the compressor is less than the target speed, the speed of the compressor is controlled to increase from the real-time speed to the target speed, thereby realizing the control and adjustment of the compressor speed to ensure that the compressor works at the target speed.

[0074] Figure 2 FIG. 2 is a flow chart of a battery temperature reduction control method provided by another embodiment of the present application. Figure 2 As shown, the battery temperature reduction control method further includes step S104.

[0075] Step S104, when the remaining power value is less than the first preset power value, the first temperature value is greater than or equal to the third preset temperature value, and the second temperature value is greater than or equal to the fourth preset temperature value, determine that the rated speed of the compressor is the target speed.

[0076] Specifically, when the remaining power value is less than the first preset power value, the battery can be quickly charged. When the first temperature value is greater than or equal to the third preset temperature value, the ambient temperature is high, the fluidity of the oil is good, and the compressor will not cause damage when operating at a high speed. Designers can set the specific value of the third preset temperature value according to actual conditions. For example, the third preset temperature value is set to 5°C. When the first temperature value is greater than or equal to 5°C, it means that the ambient temperature is high and the compressor will not cause damage when operating at a high speed.

[0077] The fourth preset temperature value is the critical temperature value at which the battery needs to be cooled. When the second temperature value is greater than or equal to the fourth preset temperature value, the battery body needs to be cooled; when the second temperature value is less than the fourth preset temperature value, the battery body does not need to be cooled. Designers can set the specific value of the fourth preset temperature value according to actual conditions. For example, if the fourth preset temperature value is set to 35°C, when the temperature value of the battery body is greater than or equal to 35°C, the battery body needs to be cooled; when the temperature value of the battery body is less than 35°C, the battery body does not need to be cooled.

[0078] When the remaining power value is less than the first preset power value, the first temperature value is greater than or equal to the third preset temperature value, and the second temperature value is greater than or equal to the fourth preset temperature value, it means that the battery is fast charged in a high temperature environment and the temperature of the battery body is too high. At this time, the rated speed of the compressor is determined as the target speed, so that the compressor works at the rated speed to cool the battery body and achieve a good cooling effect.

[0079] Figure 3 FIG. 2 is a flow chart of a battery temperature reduction control method provided by another embodiment of the present application. Figure 3 As shown, the battery temperature reduction control method further includes step S105.

[0080] Step S105, when the remaining power value is less than the first preset power value, the first temperature value is between the first preset temperature value and the third preset temperature value, and the second temperature value is greater than or equal to the fourth preset temperature value, control the motor radiator to cool the battery.

[0081] Specifically, the first temperature value is between the first preset temperature value and the third preset temperature value, indicating that the ambient temperature at this time is at an intermediate temperature. When the temperature of the battery body is too high, the motor radiator can be used to cool the battery body, and the compressor is no longer needed, thereby achieving the effect of reducing energy consumption.

[0082] Figure 4 FIG. 2 is a flow chart of a battery temperature reduction control method provided by another embodiment of the present application. Figure 4 The battery cooling control method also includes step S106.

[0083] Step S106, when the remaining power value is less than the second preset power value and the second temperature value is greater than or equal to the fourth preset temperature value, control to reduce the charging power of the battery.

[0084] Specifically, when the remaining power value is less than the second preset power value and the second temperature value is greater than or equal to the fourth preset temperature value, it means that the compressor operation does not meet the requirements for cooling the battery body and the temperature of the battery body is still too high. At this time, the charging power of the battery is controlled to be reduced to reduce the temperature rise of the battery body and achieve cooling of the battery body.

[0085] In order to clearly explain the working principle of the battery temperature reduction control method, a specific embodiment is used as an example for explanation. Figure 5 As shown, in this embodiment, the first preset temperature value is -5°C, the second preset temperature value is 20°C, the third preset temperature value is 5°C, the fourth preset temperature value is 35°C, and the first preset power value is 95% of the rated capacity of the battery.

[0086] (1) After the charging pile and the vehicle's battery are connected, the vehicle's controller is powered on and determines whether the battery plug function is activated. If the battery plug function is not activated, the battery will not be fast charged. When the battery plug function is activated, the controller determines whether the remaining battery power is greater than 95%. If the remaining battery power is greater than or equal to 95%, the battery will not be fast charged. If the remaining battery power is less than 95%, the battery will be fast charged.

[0087] (2) When the battery is fast charged, when the first temperature value is greater than or equal to 5°C and the second temperature value is greater than or equal to 35°C, the compressor is controlled to operate at the rated speed to cool the battery. At this time, the oil temperature is relatively high and the high-speed rotation of the compressor will not cause damage. When the second temperature value is less than 35°C, the battery cooling is stopped.

[0088] (3) When the battery is fast charged and the first temperature value is less than 5° C., it is determined whether the first temperature value is greater than -5° C. When the first temperature value is greater than or equal to -5° C. and the second temperature value is greater than or equal to 35° C., the motor radiator is controlled to cool the battery.

[0089] (4) When the first temperature value is less than -5°C, it indicates that the ambient temperature is low. At this time, determine whether the second temperature value is greater than 20°C. When the second temperature value is less than 20°C, stop cooling the battery. When the second temperature value is greater than or equal to 20°C, determine the target speed based on the third temperature value, control the compressor to start, and adjust the compressor speed to the target speed to cool the battery, thereby achieving early cooling of the battery and reducing the power requirement of the compressor, allowing the compressor to operate at a target speed lower than the rated speed.

[0090] (5) When the compressor is operating at the target speed to cool the battery, determine whether the second temperature value is greater than 35°C. When the second temperature value is greater than or equal to 35°C, it means that the compressor cannot meet the cooling effect of the battery. At this time, determine whether the remaining battery power is greater than 80%. If the remaining battery power is greater than or equal to 80%, continue to charge the battery at the original power, because the battery can be fully charged in a shorter time at this time, and the short-term high temperature will not cause damage to the battery. If the remaining battery power is less than 80% at this time, control to reduce the battery charging power to reduce the temperature rise of the battery and prevent the battery temperature from being too high and causing battery damage.

[0091] (6) When the compressor is operating at the target speed to cool the battery, if the second temperature value is less than 35°C, it is determined whether the second temperature value is greater than 15°C. If the second temperature value is less than 15°C, the battery cooling is stopped. If the second temperature value is greater than or equal to 15°C, the compressor is still controlled to operate at the target speed to cool the battery.

[0092] (7) During the rapid charging process of the battery, when the remaining power of the battery is greater than or equal to 99%, it means that the battery is fully charged. At this time, the controller controls the rapid exit and completes the battery charging.

[0093] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0094] Figure 6 The schematic diagram of the structure of the battery temperature reduction control device provided in the embodiment of the present application is shown. Figure 6 As shown, the battery temperature reduction control device includes:

[0095] An acquisition module 61 is used to acquire a first temperature value, a second temperature value, a third temperature value and a remaining power value of the battery; the first temperature value is a temperature value of the surrounding environment of the battery, the second temperature value is a temperature value of the battery body, and the third temperature value is a temperature value of the oil;

[0096] A first target speed determination module 62, configured to determine a target speed of the compressor according to the third temperature value when the remaining power value is less than a first preset power value, the first temperature value is less than a first preset temperature value, and the second temperature value is greater than or equal to a second preset temperature value;

[0097] The first control module 63 is used to control the compressor to adjust the speed to the target speed.

[0098] In one embodiment of the present application, the battery temperature reduction control device further includes:

[0099] The second target speed determination module is used to determine that the rated speed of the compressor is the target speed when the remaining power value is less than the first preset power value, the first temperature value is greater than or equal to the third preset temperature value, and the second temperature value is greater than or equal to the fourth preset temperature value.

[0100] In one embodiment of the present application, the battery temperature reduction control device further includes:

[0101] The second control module is used to control the motor radiator to cool the battery when the remaining power value is less than the first preset power value, the first temperature value is between the first preset temperature value and the third preset temperature value, and the second temperature value is greater than or equal to the fourth preset temperature value.

[0102] In one embodiment of the present application, the battery temperature reduction control device further includes:

[0103] The third control module is used to control the reduction of the charging power of the battery when the remaining power value is less than the second preset power value and the second temperature value is greater than or equal to a fourth preset temperature value.

[0104] In one embodiment of the present application, the acquisition module 61 includes:

[0105] A judgment unit, used to judge whether the battery plug-in function is activated;

[0106] An acquisition unit is used to acquire the first temperature value, the second temperature value, the third temperature value and the remaining power value when the battery plug function is activated.

[0107] In one embodiment of the present application, the first control module 63 includes:

[0108] A starting unit, used to control the starting of the compressor and obtain the real-time speed of the compressor;

[0109] A control unit is used to control the speed of the compressor to decrease from the real-time speed to the target speed when the real-time speed is greater than the target speed.

[0110] In one embodiment of the present application, the first target speed determination module 62 includes:

[0111] a target temperature range determining unit, configured to determine a target temperature range according to the third temperature value;

[0112] The target speed determination unit is used to determine the corresponding target speed according to the target temperature range.

[0113] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0114] in addition, Figure 6 The battery temperature reduction control device shown may be a software unit, a hardware unit, or a combination of software and hardware units built into an existing terminal device, or may be integrated into the terminal device as an independent pendant, or may exist as an independent terminal device.

[0115] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0116] Figure 7 This is a schematic diagram of the structure of the terminal device provided in the embodiment of the present application. Figure 7 As shown, the terminal device 7 of this embodiment may include: at least one processor 70 ( Figure 7 Only one processor 70 is shown in the figure), a memory 71, and a computer program 72 stored in the memory 71 and executable on the at least one processor 70. When the processor 70 executes the computer program 72, the steps in any of the above-mentioned method embodiments are implemented, for example Figure 1 Steps S101 to S103 in the illustrated embodiment. Alternatively, when the processor 70 executes the computer program 72, the functions of each module / unit in the above-mentioned device embodiments are implemented, for example Figure 6 The functions of modules 61 to 63 are shown.

[0117] Exemplarily, the computer program 72 may be divided into one or more modules / units, which are stored in the memory 71 and executed by the processor 70 to implement the present invention. The one or more modules / units may be a series of computer program 72 instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program 72 in the terminal device 7.

[0118] The terminal device 7 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The terminal device 7 may include, but is not limited to, a processor 70 and a memory 71. Those skilled in the art will appreciate that Figure 7 It is only an example of the terminal device 7 and does not constitute a limitation on the terminal device 7. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, it may also include input and output devices, network access devices, etc.

[0119] The processor 70 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0120] In some embodiments, the memory 71 may be an internal storage unit of the terminal device 7, such as a hard disk or memory of the terminal device 7. In other embodiments, the memory 71 may also be an external storage device of the terminal device 7, 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 7. Further, the memory 71 may also include both an internal storage unit and an external storage device of the terminal device 7. The memory 71 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program 72. The memory 71 may also be used to temporarily store data that has been output or is to be output.

[0121] The embodiment of the present application further provides a computer-readable storage medium, which stores a computer program 72. When the computer program 72 is executed by the processor 70, the steps in the above-mentioned method embodiments can be implemented.

[0122] An embodiment of the present application provides a computer program product. When the computer program product runs on a mobile terminal, the mobile terminal can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0123] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program 72, and the computer program 72 can be stored in a computer-readable storage medium. When the computer program 72 is executed by the processor 70, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program 72 includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the terminal device, a recording medium, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, RandomAccess Memory), an electric carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0124] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0125] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0126] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0127] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0128] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A battery cooling control method, It is characterized in that include: Acquiring a first temperature value, a second temperature value, a third temperature value, and a remaining power value of the battery; The first temperature value is the temperature value of the environment around the battery, the second temperature value is the temperature value of the battery body, and the third temperature value is the temperature value of the oil inside the air conditioning system; When the remaining power value is less than a first preset power value, the first temperature value is less than a first preset temperature value, and the second temperature value is greater than or equal to a second preset temperature value, determining a target speed of the compressor according to the third temperature value; Controlling the compressor to adjust the speed to the target speed; The step of determining the target speed of the compressor according to the third temperature value comprises: determining a target temperature range according to the third temperature value; The corresponding target rotation speed is determined according to the target temperature range.

2. The battery temperature reduction control method according to claim 1, It is characterized in that The battery temperature reduction control method further includes: When the remaining power value is less than a first preset power value, the first temperature value is greater than or equal to a third preset temperature value, and the second temperature value is greater than or equal to a fourth preset temperature value, the rated speed of the compressor is determined to be the target speed.

3. The battery temperature reduction control method according to claim 1, It is characterized in that The battery temperature reduction control method further includes: When the remaining power value is less than a first preset power value, the first temperature value is between the first preset temperature value and a third preset temperature value, and the second temperature value is greater than or equal to a fourth preset temperature value, the motor radiator is controlled to cool the battery.

4. The battery temperature reduction control method according to claim 1, It is characterized in that The battery temperature reduction control method further includes: When the remaining power value is less than a second preset power value and the second temperature value is greater than or equal to a fourth preset temperature value, the charging power of the battery is controlled to be reduced.

5. The battery temperature reduction control method according to any one of claims 1 to 4, It is characterized in that The obtaining of the first temperature value, the second temperature value, the third temperature value and the remaining power value of the battery includes: Determine whether the battery plug function is activated; When the battery plug function is activated, the first temperature value, the second temperature value, the third temperature value and the remaining power value are acquired.

6. The battery temperature reduction control method according to any one of claims 1 to 4, It is characterized in that The controlling the compressor to adjust the rotation speed to the target rotation speed comprises: Controlling the compressor to start, and obtaining the real-time rotation speed of the compressor; When the real-time rotation speed is greater than the target rotation speed, the rotation speed of the compressor is controlled to decrease from the real-time rotation speed to the target rotation speed.

7. A battery cooling control device, It is characterized in that include: An acquisition module, used to acquire a first temperature value, a second temperature value, a third temperature value and a remaining power value of the battery; The first temperature value is the temperature value of the environment around the battery, the second temperature value is the temperature value of the battery body, and the third temperature value is the temperature value of the oil inside the air conditioning system; a first target speed determination module, configured to determine a target speed of the compressor according to the third temperature value when the remaining power value is less than a first preset power value, the first temperature value is less than a first preset temperature value, and the second temperature value is greater than or equal to a second preset temperature value; A first control module, used for controlling the compressor to adjust the speed to the target speed; The first target speed determination module includes: a target temperature range determining unit, configured to determine a target temperature range according to the third temperature value; The target speed determination unit is used to determine the corresponding target speed according to the target temperature range.

8. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, It is characterized in that When the processor executes the computer program, the method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium storing a computer program. It is characterized in that When the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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