Battery heating control method and system, medium and vehicle

Abstract

The invention relates to the technical field of battery heating, in particular to a battery heating control method and system, a medium and a vehicle. The method comprises the following steps: collecting the current temperature and the residual electric quantity of a power battery, determining the available electric quantity of the power battery according to the current temperature and the residual electric quantity, obtaining the target discharge power of the power battery according to the current temperature and the residual electric quantity, and obtaining the required electric quantity and the required power of a vehicle in a preset travel; and performing heating control on the power battery according to the required electric quantity, the required power, the available electric quantity and the target discharge power. In the application, whether to heat the power battery or not is judged according to the required electric quantity and the required power of the vehicle, and if the required electric quantity and the required power can meet the navigation planning path, the power battery does not need to be actively heated, so that extra power consumption caused by heating of the power battery is avoided, and the endurance mileage is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery heating, and in particular to a battery heating control method, system, medium and vehicle. Background Art

[0002] When new energy vehicles are used in winter, low temperatures will reduce the electrochemical activity of the battery, significantly reduce the charging and discharging capabilities and capacity, and significantly reduce the driving range and reduce the vehicle's power performance. To improve the impact of low battery temperatures, active heating solutions are currently used, that is, when the battery temperature is below the temperature threshold, the battery energy is consumed through heat pumps, self-heating, etc. Such technical solutions will still affect the range. Summary of the invention

[0003] Based on this, it is necessary to provide a battery heating control method, system, medium and vehicle to address the above technical issues, so as to solve the problem of reduced cruising range of new energy vehicles when used in winter.

[0004] A first aspect of an embodiment of the present application provides a battery heating control method, including: Collecting the current temperature and the remaining power of the power battery, and determining the available power of the power battery according to the current temperature and the remaining power; Obtaining a target discharge power of the power battery according to the current temperature and the remaining power; The required power and required power of the vehicle under a preset travel range are obtained, and heating of the power battery is controlled according to the required power, the required power, the available power and the target discharge power.

[0005] A second aspect of an embodiment of the present application provides a battery heating control system, including: A determination module, used to collect the current temperature and the remaining power of the power battery, and determine the available power of the power battery according to the current temperature and the remaining power; An obtaining module, used for obtaining a target discharge power of the power battery according to the current temperature and the remaining power; The control module is used to obtain the required power and required power of the vehicle under a preset journey, and to control the heating of the power battery according to the required power, the required power, the available power and the target discharge power.

[0006] A third aspect of 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 battery heating control method described in the first aspect is implemented.

[0007] A fourth aspect of an embodiment of the present application provides a vehicle, comprising the battery heating control system described in the second aspect.

[0008] Compared with the prior art, the present invention has the following beneficial effects: The current temperature and remaining power of the power battery are collected, and the available power of the power battery is determined according to the current temperature and the remaining power. The target discharge power of the power battery is obtained according to the current temperature and the remaining power, and the required power and required power of the vehicle under the preset journey are obtained. The power battery is heated and controlled according to the required power, required power, available power and target discharge power. In this application, whether to heat the power battery is determined according to the required power and required power of the vehicle. If the required power and required power can meet the route planned by the navigation, there is no need to actively heat the power battery, thereby avoiding the extra power consumption caused by heating the power battery and improving the cruising range. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0010] Figure 1 This is a flow chart of a battery heating control method provided by Embodiment 1 of the present invention. Figure 2 is a schematic diagram of a mapping relationship between temperature and power of a power battery provided in a second embodiment of the present invention; Figure 3 is a schematic diagram of a mapping relationship between temperature, remaining power and power of a power battery provided in a third embodiment of the present invention; Figure 4 is a structural schematic diagram of a battery heating control system provided by a fourth embodiment of the present invention; Figure 5 is a structural schematic diagram of a computer device provided by Embodiment 5 of the present invention; Figure 6 It is a structural schematic diagram of a vehicle provided in Example 6 of the present invention. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0013] It should also be understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0014] As used in the present specification and the appended claims, the term "if" may be interpreted as "when" or "upon" 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" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]", depending on the context.

[0015] In addition, in the description of the present 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.

[0016] References to "one embodiment" or "some embodiments" etc. described in the present specification mean that one or more embodiments of the present invention 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.

[0017] It should be understood that the order of execution of the steps in the following embodiments does not imply a precedence 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 invention.

[0018] In order to illustrate the technical solution of the present invention, specific embodiments are provided below for illustration.

[0019] See also Figure 1 , is a flow chart of a battery heating control method provided in Embodiment 1 of the present invention, such as Figure 1 As shown, the battery heating control method may include the following steps.

[0020] S101: collecting the current temperature and remaining power of the power battery, and determining the available power of the power battery according to the current temperature and the remaining power.

[0021] In step S101, the current temperature and remaining power of the power battery are collected so as to determine the corresponding power when the vehicle is in a balanced state according to the current temperature, and thus determine the usable power of the power battery according to the corresponding power when the vehicle is in a balanced state and the remaining power, wherein the usable power of the power battery is the power that can be used by the power battery to maintain vehicle driving without heating the power battery.

[0022] In this embodiment, the current temperature and remaining power of the power battery are collected through the vehicle's collection function, and the available power of the power battery is determined according to the current temperature and the remaining power. When determining the available power of the power battery, it can be determined according to the difference between the remaining power and the power corresponding to the power battery when reaching the balance point, that is, the available power is the power that can be used by the vehicle in pure electric mode without heating the power battery.

[0023] Optionally, determining the available power of the power battery according to the current temperature and the remaining power includes: Obtain the mapping relationship between the temperature and power of the power battery; According to the current temperature and the mapping relationship between the temperature and power of the power battery, the balance point power of the power battery is obtained; The available power of the power battery is calculated based on the balance point power and the remaining power.

[0024] See also Figure 2 , is a schematic diagram of a mapping relationship between temperature and power of a power battery provided in the second embodiment of the present invention, such as Figure 2 As shown in the figure, in this embodiment, when the power battery is kept balanced, that is, at the boundary between not heating the power battery and heating the power battery, the mapping relationship between the temperature and the power of the power battery is shown, where the horizontal axis is the temperature of the power battery, the vertical axis is the power of the power battery, and the vertical axis is the percentage of the corresponding power of the power battery. Figure 2It can be seen that as the temperature of the power battery gets higher and higher, the corresponding power battery capacity gets lower and lower, that is, when the power battery temperature gets higher and higher, the power battery corresponding to the balance point gets lower and lower, that is, when the power battery temperature gets higher and higher, when the power battery starts to be heated, the corresponding remaining power of the power battery gets lower and lower.

[0025] After obtaining the mapping relationship between the temperature and the power of the power battery, the balance point power of the power battery is obtained according to the current temperature and the mapping relationship between the temperature and the power of the power battery. Among them, the balance point power can be the power obtained after calculation according to the corresponding percentage. For example, when the temperature of the power battery is -25 degrees Celsius, the corresponding power of the power battery is about 30%. The total power of the battery is obtained, and the balance point power is calculated according to the total power of the corresponding battery and the corresponding percentage of 30%. When the temperature of the power battery is -20 degrees Celsius, the corresponding power of the power battery is about 20%. The balance point power is calculated according to the total power of the corresponding battery and the corresponding percentage of 20%. When the temperature of the power battery is 5 degrees Celsius, the corresponding power of the power battery is about 10%. The balance point power is calculated according to the total power of the corresponding battery and the corresponding percentage of 100%.

[0026] The available power of the power battery is calculated based on the balance point power and the remaining power. When calculating, the available power of the power battery is obtained by subtracting the balance point power from the remaining power. For example, when the temperature of the power battery is -20 degrees Celsius, the corresponding power percentage of the power battery is 20%. If the remaining power percentage is 80%, the available power percentage of the power battery is 60%. The remaining power is calculated based on the power percentage of 60% and the total power of the battery.

[0027] In this embodiment, the available power of the power battery is calculated based on the balance point power and the remaining power, so as to prevent the power battery power from reaching below the balance point power before the power battery is heated, and the critical point of heating the power battery cannot be controlled more accurately, thereby failing to effectively control the heating of the power battery.

[0028] S102: Obtaining a target discharge power of the power battery according to the current temperature and the remaining power.

[0029] In step S102, the target discharge power of the power battery is obtained according to the current temperature and the remaining power, wherein the target discharge power is the maximum power that can be released by the power battery under the current temperature and the remaining power.

[0030] In this embodiment, the target discharge power of the power battery is obtained according to the current temperature and the remaining power. There is a corresponding mapping relationship between the temperature, the remaining power and the power of the power battery, and the corresponding target discharge power can be found from the corresponding mapping relationship.

[0031] Optionally, the target discharge power of the power battery is obtained according to the current temperature and the remaining power, including: Obtain the mapping relationship between the temperature, remaining power and power of the power battery; According to the current temperature and the current remaining power, combined with the mapping relationship between the temperature, remaining power and power of the power battery, the target discharge power of the power battery is obtained.

[0032] See also Figure 3 , is a schematic diagram of a mapping relationship between the temperature, remaining power and power of a power battery provided in the third embodiment of the present invention, such as Figure 3 As shown, different temperatures and power levels correspond to different power areas, and different colors represent different power levels. For example, when the battery temperature is 20 degrees Celsius and the power level is 80%, the power that the power battery can release is 130KW; when the battery temperature is 30 degrees Celsius and the power level is 30%, the power that the power battery can release is 125KW.

[0033] In this embodiment, the target discharge power of the power battery is obtained according to the current temperature and the current remaining power, combined with the mapping relationship between the temperature, remaining power and power of the power battery.

[0034] S103: Obtaining the required power and required power of the vehicle under a preset trip, and controlling the heating of the power battery according to the required power, required power, available power and target discharge power.

[0035] In step S103, the required power and required power of the vehicle under the preset travel are obtained, wherein the required power and required power are the power and power required for the vehicle to complete the corresponding preset travel when driving in pure electric mode. According to the required power, required power, available power and target discharge power, the power battery is heated, that is, whether the vehicle needs to heat the power battery is controlled.

[0036] In this embodiment, the required power and required power of the vehicle under the preset itinerary are obtained, wherein the preset itinerary can be determined according to the navigation plan of the vehicle, that is, the corresponding mileage and driving time are determined according to the navigation plan. The required power and required power under the preset itinerary are determined according to the corresponding mileage and driving time, and the required power, required power, and available power are compared with the target discharge power to determine whether the comparison result meets the condition for heating the power battery. If the comparison result meets the condition for not heating the power battery, the power battery is not heated. If the comparison result does not meet the condition for not heating the power battery, the power battery is heated.

[0037] In this embodiment, the power battery is heated and controlled according to the required power, required power, available power and target discharge power, so as to avoid heating the power battery when it does not need to be heated, thereby causing extra power consumption and affecting the vehicle's cruising range.

[0038] Optionally, obtaining the required electricity and required power of the vehicle under a preset trip includes: Obtain the vehicle's driving distance and driving time; Calculate the average speed of the vehicle based on the driving distance and driving time; Calculate the vehicle's driving resistance based on its average speed; Calculate the required power of the vehicle based on the average speed and driving resistance; Calculate the vehicle's required power based on the required power and driving time.

[0039] In this embodiment, according to the current travel plan of the vehicle, the driving distance and driving time of the vehicle to the destination are obtained, the average speed of the vehicle is calculated according to the driving distance and driving time, and the driving resistance of the vehicle is calculated according to the average speed of the vehicle, wherein the calculation formula of the driving resistance is as follows: in, is the driving resistance, is the average speed, , , is the driving resistance coefficient, is a constant term used to characterize the rolling resistance of the vehicle. is the first-order coefficient, used to characterize the vehicle internal resistance, is the quadratic coefficient, which is used to characterize wind resistance.

[0040] The required power of the vehicle is calculated based on the average speed and driving resistance, where the required power is calculated as follows: in, is the required power, is the driving resistance, is the average speed.

[0041] The required power of the vehicle is calculated based on the required power and driving time. The calculation formula for the required power is as follows: in, is the power demand, is the required power, Additional power refers to the power consumed by other devices in the vehicle, such as the power consumed by the air conditioner. is the driving time.

[0042] Optionally, the power battery is heated and controlled according to the required power, required power, available power and target discharge power, including: When the available power is greater than the required power and the target discharge power is greater than the required power, the vehicle is controlled not to perform heating control on the power battery.

[0043] In this embodiment, when the available power is greater than the required power and the target discharge power is greater than the required power, that is, the vehicle can complete the corresponding preset trip in the pure electric mode, in this case, the vehicle is controlled not to heat the power battery, thereby avoiding unnecessary power consumption.

[0044] Optionally, the power battery is heated and controlled according to the required power, required power, available power and target discharge power, further comprising: When the available power is not greater than the required power consumption and / or the target discharge power is not greater than the required power, the vehicle is controlled to actively heat the power battery.

[0045] In this embodiment, when the available power is not greater than the required power consumption and / or the target discharge power is not greater than the required power, that is, the available power is not greater than the required power consumption, or the target discharge power is not greater than the required power, that is, the available power of the vehicle cannot complete the corresponding preset journey, and it is necessary to control the vehicle to actively heat the power battery during driving.

[0046] It should be noted that when the vehicle is controlled to actively heat the power battery, corresponding heating conditions can be set, and the vehicle starts to be heated when the corresponding heating conditions are met. For example, before the vehicle starts to drive, the power battery is heated until the available power is greater than the required power and the target discharge power is greater than the required power, and the heating stops.

[0047] In another embodiment, the required power and required power of the vehicle under a preset itinerary are obtained, wherein the required power may also include additional power, wherein the additional power is the power corresponding to the power used by other power-consuming devices during the driving of the vehicle, such as the power corresponding to the power used when the vehicle air conditioner is turned on. Therefore, the required power includes the power corresponding to the driving process of the vehicle and the additional power, and the required power is calculated according to the corresponding required power and driving time, and the power battery is heated and controlled according to the required power, required power, available power and target discharge power. When the available power is greater than the required power and the target discharge power is greater than the required power, the vehicle is controlled not to perform heating control on the power battery. When the available power is not greater than the required power consumption or / and the target discharge power is not greater than the required power, the vehicle is controlled to actively perform heating control on the power battery.

[0048] Optionally, after heating the power battery according to the required power, required power, available power and target discharge power, the method further includes: A navigation operation instruction is obtained. If the navigation operation instruction is to re-plan navigation, the step of collecting the temperature of the power battery of the vehicle and the remaining power of the power battery is re-executed.

[0049] In this embodiment, if the preset itinerary is changed during driving of the vehicle, a navigation operation instruction is obtained. If the navigation operation instruction is to re-plan the navigation, the temperature of the power battery of the vehicle at the current moment and the remaining power of the power battery are re-collected, and the usable power of the power battery is determined based on the current temperature and the remaining power. The target discharge power of the power battery is obtained based on the current temperature and the remaining power, and the required power and required power of the vehicle under the preset itinerary after the navigation is re-planned are obtained. The power battery is heated and controlled based on the required power, required power, usable power and target discharge power.

[0050] It should be noted that after re-planning the navigation, it is necessary to re-determine whether the power battery needs to be heated.

[0051] The current temperature and remaining power of the power battery are collected, and the available power of the power battery is determined according to the current temperature and the remaining power. The target discharge power of the power battery is obtained according to the current temperature and the remaining power, and the required power and required power of the vehicle under the preset journey are obtained. The power battery is heated and controlled according to the required power, required power, available power and target discharge power. In this application, whether to heat the power battery is determined according to the required power and required power of the vehicle. If the required power and required power can meet the route planned by the navigation, there is no need to actively heat the power battery, thereby avoiding the extra power consumption caused by heating the power battery and improving the cruising range.

[0052] See also Figure 4, is a schematic diagram of the structure of a battery heating control system provided by the fourth embodiment of the present invention. For the sake of convenience, only the parts related to the embodiment of the present invention are shown. Figure 4 The battery heating control system 40 includes: a determination module 41 , an acquisition module 42 , and a control module 43 .

[0053] The determination module 41 is used to collect the current temperature and remaining power of the power battery, and determine the available power of the power battery according to the current temperature and the remaining power.

[0054] The obtaining module 42 is used to obtain the target discharge power of the power battery according to the current temperature and the remaining power.

[0055] The control module 43 is used to obtain the required power and required power of the vehicle under a preset range, and to control the heating of the power battery according to the required power, required power, available power and target discharge power.

[0056] Optionally, the determination module 41 includes: The first acquisition unit is used to acquire a mapping relationship between the temperature and the power of the power battery.

[0057] The first obtaining unit is used to obtain the balance point power of the power battery according to the current temperature and the mapping relationship between the temperature and power of the power battery.

[0058] The first calculation unit is used to calculate the available power of the power battery according to the balance point power and the remaining power.

[0059] Optionally, the obtaining module 42 includes: The second acquisition unit is used to acquire the mapping relationship between the temperature, remaining power and power of the power battery.

[0060] The second obtaining unit is used to obtain the target discharge power of the power battery according to the current temperature and the current remaining power, combined with the mapping relationship between the temperature, remaining power and power of the power battery.

[0061] Optionally, the control module 43 includes: The third acquisition unit is used to acquire the driving distance and driving time of the vehicle.

[0062] The second calculation unit is used to calculate the average speed of the vehicle according to the driving distance and the driving time.

[0063] The third calculation unit is used to calculate the driving resistance of the vehicle according to the average speed of the vehicle.

[0064] The fourth calculation unit is used to calculate the required power of the vehicle according to the average speed and the driving resistance.

[0065] The fifth calculation unit is used to calculate the required power of the vehicle according to the required power and the driving time.

[0066] Optionally, the control module 43 includes: The first control unit is used to control the vehicle not to heat the power battery when the available power is greater than the required power and the target discharge power is greater than the required power.

[0067] Optionally, the control module 43 includes: The second control unit is used to control the vehicle to actively heat the power battery when the available power is not greater than the required power consumption or / and the target discharge power is not greater than the required power.

[0068] Optionally, the battery heating control system 40 further includes: The acquisition module is used to acquire the navigation operation instruction. If the navigation operation instruction is to re-plan the navigation, the step of collecting the temperature of the power battery of the vehicle and the remaining power of the power battery is re-executed.

[0069] It should be noted that the information interaction, execution process and other contents between the above modules are based on the same concept as the embodiment of the method of the present invention. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0070] Figure 5 Schematic diagram of the structure of a computer device provided by Embodiment 5 of the present invention. Figure 5 As shown, the computer device of this embodiment includes: at least one processor ( Figure 5 Only one is shown in the figure), a memory, and a computer program stored in the memory and executable on at least one processor, and when the processor executes the computer program, the steps in any of the above-mentioned battery heating control method embodiments are implemented. The computer device may include, but is not limited to, a processor and a memory. Those skilled in the art will appreciate that Figure 5 This is merely an example of a computer device and does not constitute a limitation on the computer device. The computer device may include more or fewer components than those shown in the figure, or a combination of certain components, or different components, for example, it may also include a network interface, etc.

[0071] The processor may be a CPU, or other general-purpose processors, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (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.

[0072] The memory includes a readable storage medium, an internal memory, etc., wherein the internal memory may be the memory of a computer device, and the internal memory provides an environment for the operation of the operating system and computer-readable instructions in the readable storage medium. The readable storage medium may be a hard disk of a computer device, and in other embodiments, it may also be an external storage device of the computer device, for example, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the computer device. Further, the memory may also include both an internal storage unit of the computer device and an external storage device. The memory is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of a computer program, etc. The memory may also be used to temporarily store data that has been output or is to be output.

[0073] 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. 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 is 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 into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into 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 the present invention. The specific working process of the units and modules in the above-mentioned device can refer to the corresponding process in the above-mentioned method embodiment, which will not be repeated here. 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 such understanding, the present invention 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, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned method embodiment can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device capable of carrying computer program code, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0074] The present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by a computer program product. When the computer program product runs on a computer device, the computer device can implement the steps in the above-mentioned method embodiment when executing.

[0075] 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.

[0076] Those skilled 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 the present invention.

[0077] In the embodiments provided by the present invention, it should be understood that the disclosed devices / computer equipment and methods can be implemented in other ways. For example, the device / computer equipment embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and 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.

[0078] 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.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those 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 invention, and should be included in the protection scope of the present invention.

[0080] See also Figure 6 , is a schematic diagram of the structure of a vehicle 60 provided in Embodiment 6 of the present invention, wherein the vehicle 60 includes a battery heating control system 40.

Claims

1. A battery heating control method, characterized in that: include: Collecting the current temperature and the remaining power of the power battery, and determining the available power of the power battery according to the current temperature and the remaining power; Obtaining a target discharge power of the power battery according to the current temperature and the remaining power; The required power and required power of the vehicle under a preset travel range are obtained, and heating of the power battery is controlled according to the required power, the required power, the available power and the target discharge power.

2. The battery heating control method according to claim 1, characterized in that: The determining, according to the current temperature and the remaining power, the available power of the power battery includes: Obtaining a mapping relationship between the temperature and power of the power battery; According to the current temperature, combined with the mapping relationship between the temperature and the power battery, the balance point power of the power battery is obtained; The available power of the power battery is calculated according to the balance point power and the remaining power.

3. The battery heating control method according to claim 1, characterized in that: The obtaining, according to the current temperature and the remaining power, a target discharge power of the power battery includes: Obtaining a mapping relationship between the temperature, remaining power and power of the power battery; The target discharge power of the power battery is obtained according to the current temperature and the current remaining power, combined with a mapping relationship among the temperature, remaining power and power of the power battery.

4. The battery heating control method according to claim 1, characterized in that: The obtaining of the required electricity and required power of the vehicle under a preset trip includes: Obtaining the driving distance and driving time of the vehicle; Calculating an average speed of the vehicle according to the driving distance and the driving time; Calculating the running resistance of the vehicle according to the average speed of the vehicle; Calculating the required power of the vehicle according to the average speed and the driving resistance; The required power of the vehicle is calculated according to the required power and the driving time.

5. The battery heating control method according to claim 3, characterized in that: The heating control of the power battery according to the required power, the required power, the available power and the target discharge power includes: When the available electric power is greater than the required electric power and the target discharge power is greater than the required power, the vehicle is controlled not to perform heating control on the power battery.

6. The battery heating control method according to claim 3, characterized in that: The heating control of the power battery according to the required power, the required power, the available power and the target discharge power also includes: When the available power is not greater than the required power consumption or / and the target discharge power is not greater than the required power, the vehicle is controlled to actively heat the power battery.

7. The battery heating control method according to claim 5, characterized in that: After the heating control of the power battery is performed according to the required power, the required power, the available power and the target discharge power, the method further includes: A navigation operation instruction is obtained. If the navigation operation instruction is to re-plan navigation, the step of collecting the temperature of the power battery of the vehicle and the remaining power of the power battery is re-executed.

8. A battery heating control system, characterized in that: include: A determination module, used to collect the current temperature and the remaining power of the power battery, and determine the available power of the power battery according to the current temperature and the remaining power; An obtaining module, used for obtaining a target discharge power of the power battery according to the current temperature and the remaining power; The control module is used to obtain the required power and required power of the vehicle under a preset journey, and to control the heating of the power battery according to the required power, the required power, the available power and the target discharge power.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the battery heating control method according to claims 1 to 7 is implemented.

10. A vehicle, characterized in that: The vehicle includes the battery heating control system of claim 8 .

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