Battery heating control method, system, medium, and vehicle

Abstract

The present application relates to the technical field of battery heating, and particularly relates to a battery heating control method, system, medium and vehicle. The current temperature and residual capacity of a power battery are collected, the available capacity of the power battery is determined according to the current temperature and residual capacity, the target discharge power of the power battery is obtained according to the current temperature and residual capacity, the required capacity and required power of the vehicle under a preset journey are acquired, and the power battery is controlled to heat according to the required capacity, required power, available capacity and target discharge power. In the present application, whether the power battery is heated is determined according to the required capacity and required power of the vehicle, if the required capacity and required power can meet the path of navigation planning, the power battery does not need to be actively heated, thus avoiding extra power consumption caused by power battery heating and improving the cruising range.

Description

Technical Field

[0001] This invention relates to the field of battery heating technology, and in particular to a battery heating control method, system, medium, and vehicle. Background Technology

[0002] When new energy vehicles are used in winter, low temperatures reduce the electrochemical activity of the battery, significantly decreasing its charging and discharging capabilities and capacity, resulting in a substantial reduction in driving range and a decline in vehicle performance. To mitigate the impact of low temperatures on the battery, current solutions primarily employ active heating, which utilizes heat pumps or self-heating to dissipate battery energy when the battery temperature falls below a certain threshold. However, these technologies still impact driving range. Summary of the Invention

[0003] Therefore, it is necessary to provide a battery heating control method, system, medium, and vehicle to address the aforementioned technical problems and solve the issue of reduced driving range of new energy vehicles during winter use.

[0004] A first aspect of this application provides a battery heating control method, including: The current temperature and remaining charge of the power battery are collected, and the usable charge of the power battery is determined based on the current temperature and remaining charge. The target discharge power of the power battery is obtained based on the current temperature and the remaining charge. The required power and energy of the vehicle under a preset trip are obtained, and the heating of the power battery is controlled according to the required power, the required energy, the usable power and the target discharge power.

[0005] A second aspect of this application provides a battery heating control system, including: The determination module is used to collect the current temperature and remaining charge of the power battery, and determine the usable charge of the power battery based on the current temperature and remaining charge. The module is used to obtain the target discharge power of the power battery based on the current temperature and the remaining power. The control module is used to acquire the required electricity and power of the vehicle under a preset trip, and to control the heating of the power battery based on the required electricity, the required power, the usable electricity and the target discharge power.

[0006] A third aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the battery heating control method described in the first aspect.

[0007] A fourth aspect of this application provides a vehicle that includes the battery heating control system described in the second aspect above.

[0008] The advantages of this invention compared to the prior art are: The system collects the current temperature and remaining charge of the power battery. Based on these data, it determines the usable charge of the power battery and the target discharge power. It also obtains the vehicle's required charge and power for a preset trip. Finally, it controls the heating of the power battery based on the required charge, power, usable charge, and target discharge power. In this application, the system determines whether to heat the power battery based on the vehicle's required charge and power. If the required charge and power are sufficient for the planned navigation route, active heating of the power battery is unnecessary, avoiding the extra power consumption associated with battery heating and improving driving range. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a flowchart illustrating a battery heating control method provided in Embodiment 1 of the present invention. Figure 2 This is a schematic diagram illustrating the mapping relationship between temperature and charge of a power battery according to Embodiment 2 of the present invention; Figure 3 This is a schematic diagram illustrating the mapping relationship between temperature, remaining charge, and power of a power battery according to Embodiment 3 of the present invention; Figure 4 This is a schematic diagram of the structure of a battery heating control system provided in Embodiment 4 of the present invention; Figure 5 This is a schematic diagram of the structure of a computer device provided in Embodiment 5 of the present invention; Figure 6 This is a structural schematic diagram of a vehicle provided in Embodiment Six of the present invention. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

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

[0013] It should also be understood that the term “and / or” as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0014] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0015] Furthermore, in the description of this invention and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0016] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of the invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0017] It should be understood that the sequence number of each step in the following embodiments does not imply 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 invention.

[0018] To illustrate the technical solution of the present invention, specific embodiments are described below.

[0019] See Figure 1 This is a schematic flowchart of a battery heating control method provided in Embodiment 1 of the present invention, as shown below. Figure 1 As shown, the battery heating control method may include the following steps.

[0020] S101: Collects the current temperature and remaining charge of the power battery, and determines the usable charge of the power battery based on the current temperature and remaining charge.

[0021] In step S101, the current temperature and remaining charge of the power battery are collected so as to determine the corresponding charge when the vehicle is in a balanced state based on the current temperature. Then, based on the corresponding charge and remaining charge when the vehicle is in a balanced state, the usable charge of the power battery is determined. The usable charge of the power battery is the charge that the power battery can use to maintain the vehicle's operation without heating the power battery.

[0022] In this embodiment, the vehicle's data acquisition function collects the current temperature and remaining charge of the power battery. Based on the current temperature and remaining charge, the usable charge of the power battery is determined. Specifically, the usable charge can be determined based on the difference between the remaining charge and the charge level at the battery's equilibrium point; that is, the usable charge is the amount of electricity the vehicle can use in pure electric mode without heating the power battery.

[0023] Optionally, the usable capacity of the power battery is determined based on the current temperature and remaining charge, including: Obtain the mapping relationship between the temperature and the charge of the power battery; Based on the current temperature and the mapping relationship between the temperature and charge of the power battery, the equilibrium charge of the power battery is obtained. The usable capacity of the power battery is calculated based on the balance point charge and the remaining charge.

[0024] See Figure 2 This is a schematic diagram illustrating the mapping relationship between temperature and charge of a power battery according to Embodiment 2 of the present invention. Figure 2 As shown in this embodiment, under the condition of maintaining the balance of the power battery, that is, at the boundary between not heating the power battery and heating the power battery, the mapping relationship between the temperature and the charge of the power battery is shown. The horizontal axis represents the temperature of the power battery, and the vertical axis represents the charge of the power battery, which is the percentage of the corresponding charge of the power battery. From... Figure 2It can be seen that as the temperature of the power battery increases, the corresponding amount of power battery charge decreases. That is, as the temperature of the power battery increases, the amount of power battery charge at the equilibrium point decreases. In other words, when the power battery temperature increases and heating begins, the remaining power battery charge decreases.

[0025] After obtaining the mapping relationship between the battery's temperature and charge level, the equilibrium point charge level of the battery is obtained based on the current temperature and this mapping relationship. The equilibrium point charge level can be calculated as a percentage. For example, when the battery temperature is -25 degrees Celsius, the battery charge level is approximately 30%. The total battery charge level is obtained, and the equilibrium point charge level is calculated based on this total charge level and the corresponding percentage of 30%. When the battery temperature is -20 degrees Celsius, the battery charge level is approximately 20%. The equilibrium point charge level is calculated based on this total charge level and the corresponding percentage of 20%. When the battery temperature is 5 degrees Celsius, the battery charge level is approximately 10%. The equilibrium point charge level is calculated based on this total charge level and the corresponding percentage of 100%.

[0026] The usable capacity of the power battery is calculated based on the balance point charge and the remaining charge. The calculation involves subtracting the balance point charge from the remaining charge to obtain the usable capacity. For example, if the power battery temperature is -20 degrees Celsius and the corresponding charge percentage is 20%, and the remaining charge percentage is 80%, then the usable charge percentage is 60%. The remaining charge is then calculated based on this 60% charge percentage and the battery's total charge.

[0027] In this embodiment, the usable 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 falling below the balance point power before heating the power battery, which would make it impossible to accurately control the critical point of heating the power battery and thus fail to effectively control the heating of the power battery.

[0028] S102: Based on the current temperature and remaining charge, obtain the target discharge power of the power battery.

[0029] In step S102, the target discharge power of the power battery is obtained based on the current temperature and the remaining charge. The target discharge power is the maximum power that the power battery can release under the current temperature and remaining charge conditions.

[0030] In this embodiment, the target discharge power of the power battery is obtained based on the current temperature and the remaining charge. There is a corresponding mapping relationship between the temperature, remaining charge and 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 based on the current temperature and remaining charge, including: Obtain the mapping relationship between the temperature, remaining charge, and power of the power battery; Based on the current temperature and remaining charge, and combining the mapping relationship between the battery's temperature, remaining charge, and power, the target discharge power of the battery is obtained.

[0032] See Figure 3 This is a schematic diagram illustrating the mapping relationship between temperature, remaining charge, and power of a power battery according to Embodiment 3 of the present invention. Figure 3 As shown, different temperatures and battery levels correspond to different power zones, with different colors representing different power levels. For example, when the battery temperature is 20 degrees Celsius and the battery level is 80%, the power that the battery can release is 130KW; when the battery temperature is 30 degrees Celsius and the battery level is 30%, the power that the battery can release is 125KW.

[0033] In this embodiment, the target discharge power of the power battery is obtained based on 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: Obtain the required electricity and power of the vehicle under a preset trip, and control the heating of the power battery based on the required electricity, required power, usable electricity and target discharge power.

[0035] In step S103, the required energy and power of the vehicle under a preset journey are obtained. The required energy and power refer to the energy and power needed for the vehicle to complete the corresponding preset journey when driving in pure electric mode. Based on the required energy, required power, usable energy, and target discharge power, heating control is applied to the power battery to determine whether the vehicle needs to heat the power battery.

[0036] In this embodiment, the required electricity and power of the vehicle under a preset trip are obtained. The preset trip can be determined based on the vehicle's navigation plan, that is, the corresponding driving mileage and driving time are determined according to the navigation plan. The required electricity and power under the preset trip are determined based on the corresponding driving mileage and driving time. The required electricity, required power, usable electricity and target discharge power are compared with the target discharge power to determine whether the comparison result meets the conditions for heating the power battery. If the comparison result meets the conditions for not heating the power battery, then the power battery is not heated. If the comparison result does not meet the conditions for not heating the power battery, then the power battery is heated.

[0037] In this embodiment, the heating of the power battery is controlled according to the required power, required power, usable power and target discharge power. This can avoid heating the power battery when it does not need to be heated, thereby avoiding additional power consumption and affecting the vehicle's driving range.

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

[0039] In this embodiment, based on the vehicle's current travel plan, the travel distance and time to the destination are obtained. The average speed of the vehicle is calculated based on the travel distance and time. Based on the average speed, the vehicle's driving resistance is calculated. The formula for calculating the driving resistance is as follows: in, For driving resistance, For average speed, , , This is the drag coefficient. This is a constant term used to characterize the rolling resistance of the vehicle. The coefficient of the first-order term is used to characterize the internal resistance of the vehicle. The coefficient of the quadratic term is used to characterize wind resistance.

[0040] The required power of the vehicle is calculated based on the average speed and driving resistance. The formula for calculating the required power is as follows: in, For the required power, For driving resistance, This represents the average speed.

[0041] Calculate the vehicle's required electricity based on the power demand and driving time. The formula for calculating the required electricity is as follows: in, To meet the power demand, For the required power, Additional power refers to the power required by other devices in the vehicle, such as the power consumed by the air conditioner. This refers to the travel time.

[0042] Optionally, the power battery is heated according to the required power, required power, usable 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 will not control the heating of the power battery.

[0043] In this embodiment, when the usable power is greater than the required power and the target discharge power is greater than the required power, i.e., the vehicle is in pure electric mode and can complete the corresponding preset journey, the vehicle is controlled not to heat the power battery. This avoids unnecessary power consumption.

[0044] Optionally, the heating control of the power battery based on the required power, required power, usable power and 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 actively controls the heating of the power battery.

[0045] In this embodiment, when the usable power is not greater than the required power consumption or / and the target discharge power is not greater than the required power, that is, when the usable power is not greater than the required power consumption or the target discharge power is not greater than the required power, the vehicle's usable power 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 controlling the vehicle to actively heat the power battery, corresponding heating conditions can be set. Heating will begin when these conditions are met. For example, the power battery can be heated before the vehicle starts moving, continuing until the usable capacity exceeds the required capacity and the target discharge power exceeds the required power, at which point heating will stop.

[0047] In another embodiment, the required electricity and power of the vehicle during a preset trip are obtained. The required power may further include additional power, which is the power consumed by other power-consuming devices during vehicle operation, such as the power consumed when the vehicle's air conditioning is turned on. Therefore, the required power includes the power consumed during vehicle operation and the additional power. Based on the corresponding required power and driving time, the required electricity is calculated. The power battery is then heated according to the required electricity, required power, usable electricity, and target discharge power. When the usable electricity is greater than the required electricity and the target discharge power is greater than the required power, the vehicle is controlled not to heat the power battery. When the usable electricity is not greater than the required electricity consumption and / or the target discharge power is not greater than the required power, the vehicle is controlled to actively heat the power battery.

[0048] Optionally, after controlling the heating of the power battery based on the required power, required power, usable power, and target discharge power, the method further includes: Obtain navigation operation instructions. If the navigation operation instructions are to replan the navigation, then repeat the steps of collecting the temperature and remaining charge of the vehicle's power battery.

[0049] In this embodiment, if the preset route is changed during vehicle operation, a navigation operation command is obtained. If the navigation operation command is to replan the navigation, the temperature and remaining charge of the vehicle's power battery at the current moment are collected again. Based on the current temperature and remaining charge, the usable charge of the power battery is determined. Based on the current temperature and remaining charge, the target discharge power of the power battery is obtained. The required charge and required power of the vehicle under the preset route after replanning the navigation are obtained. Based on the required charge, required power, usable charge and target discharge power, the power battery is heated and controlled.

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

[0051] The system collects the current temperature and remaining charge of the power battery. Based on these data, it determines the usable charge of the power battery and the target discharge power. It also obtains the vehicle's required charge and power for a preset trip. Finally, it controls the heating of the power battery based on the required charge, power, usable charge, and target discharge power. In this application, the system determines whether to heat the power battery based on the vehicle's required charge and power. If the required charge and power are sufficient for the planned navigation route, active heating of the power battery is unnecessary, avoiding the extra power consumption associated with battery heating and improving driving range.

[0052] See Figure 4This is a schematic diagram of a battery heating control system provided in Embodiment 4 of the present invention. For ease of explanation, only the parts related to the embodiments of the present invention are shown. See also Figure 4 The battery heating control system 40 includes: a determining module 41, an obtaining 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 usable power of the power battery based on the current temperature and remaining power.

[0054] Module 42 is used to obtain the target discharge power of the power battery based on the current temperature and remaining charge.

[0055] The control module 43 is used to obtain the required electricity and power of the vehicle under a preset trip, and to control the heating of the power battery based on the required electricity, required power, usable electricity and target discharge power.

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

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

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

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

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

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

[0062] The second calculation unit is used to calculate the vehicle's average speed based on the distance traveled and the travel time.

[0063] The third calculation unit is used to calculate the vehicle's driving resistance based on the vehicle's average speed.

[0064] The fourth calculation unit is used to calculate the vehicle's required power based on the average speed and driving resistance.

[0065] The fifth calculation unit is used to calculate the vehicle's required electricity based on the required power and 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 navigation operation commands. If the navigation operation command is to replan the navigation, the steps of collecting the temperature and remaining charge of the vehicle's power battery will be executed again.

[0069] It should be noted that the information interaction and execution process between the above modules are based on the same concept as the method embodiments of the present invention. For details on their specific functions and technical effects, please refer to the method embodiments section, which will not be repeated here.

[0070] Figure 5 This is a schematic diagram of the structure of a computer device provided in 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 diagram), a memory, and a computer program stored in the memory and executable on at least one processor, which, when executed by the processor, implements the steps in any of the above-described battery heating control method embodiments. This computer device may include, but is not limited to, a processor and memory. Those skilled in the art will understand that... Figure 5 The examples of computer devices are merely examples and do not constitute a limitation on computer devices. Computer devices may include more or fewer components than shown in the illustration, or combinations of certain components, or different components, such as network interfaces.

[0071] The processor referred to can be a CPU, but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0072] Memory includes readable storage media, internal memory, etc., wherein internal memory can be the RAM of a computer device, providing an environment for the operation of the operating system and computer-readable instructions stored in the readable storage media. The readable storage media can be the hard drive of a computer device, or in other embodiments, it can be an external storage device of the computer device, such as a plug-in hard drive, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card. Furthermore, memory can include both internal storage units and external storage devices of the computer device. Memory is used to store the operating system, applications, bootloader, data, and other programs, such as program code for computer programs. Memory can also be used to temporarily store data that has been output or will be output.

[0073] Those skilled in the art will understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the functions described above can be assigned to 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 embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this invention. The specific working process of the units and modules in the above device can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here. If the integrated unit is implemented as 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 invention can implement all or part of the processes in the methods of the above embodiments by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the above method embodiments. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. A computer-readable medium can include at least: any entity or device capable of carrying computer program code, a recording medium, a computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0074] The present invention can implement all or part of the processes in the methods of the above embodiments, or it can be accomplished by a computer program product. When the computer program product is run on a computer device, the computer device executes the steps in the above method embodiments.

[0075] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0076] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0077] In the embodiments provided by this invention, it should be understood that the disclosed apparatus / computer devices and methods can be implemented in other ways. For example, the apparatus / computer device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0078] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0079] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

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

Claims

1. A battery heating control method, characterized in that, include: The current temperature and remaining charge of the power battery are collected, and the usable charge of the power battery is determined based on the current temperature and remaining charge. Obtain the mapping relationship between the temperature, remaining charge, and power of the power battery; Based on the current temperature and the remaining charge, and combined with the mapping relationship between the temperature, remaining charge and power of the power battery, the target discharge power of the power battery is obtained, wherein the target discharge power is the maximum power released by the power battery under the current temperature and remaining charge conditions; The required power and energy of the vehicle under a preset trip are obtained, and the heating of the power battery is controlled according to the required power, the required energy, the usable power and the target discharge power. The heating control of the power battery based on the required power, the required power, the usable power, and the target discharge power includes: 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 heat the power battery; the available power is determined based on the difference between the remaining power and the power battery at the equilibrium point. When the available power is not greater than the required power or / and the target discharge power is not greater than the required power, the vehicle is controlled to actively heat the power battery.

2. The battery heating control method as described in claim 1, characterized in that, The step of determining the usable capacity of the power battery based on the current temperature and the remaining power includes: Obtain the mapping relationship between the temperature and the charge of the power battery; Based on the current temperature and the mapping relationship between the temperature and charge of the power battery, the balance point charge of the power battery is obtained. The usable power of the power battery is calculated based on the balance point power and the remaining power.

3. The battery heating control method as described in claim 1, characterized in that, The step of obtaining the vehicle's required electricity and power for a preset trip includes: Obtain the distance traveled and the travel time of the vehicle; Calculate the average speed of the vehicle based on the distance traveled and the travel 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 the driving resistance; The required electricity for the vehicle is calculated based on the required power and the driving time.

4. The battery heating control method as described in claim 1, characterized in that, After controlling the heating of the power battery based on the required power, the required power, the usable power, and the target discharge power, the method further includes: Obtain navigation operation instructions. If the navigation operation instructions are to replan the navigation, then re-execute the steps of collecting the temperature of the vehicle's power battery and the remaining power of the power battery.

5. A battery heating control system, characterized in that, include: The determination module is used to collect the current temperature and remaining charge of the power battery, and determine the usable charge of the power battery based on the current temperature and remaining charge. The module is used to obtain the mapping relationship between the temperature, remaining charge and power of the power battery; based on the current temperature and the remaining charge, and combined with the mapping relationship between the temperature, remaining charge and power of the power battery, the target discharge power of the power battery is obtained, wherein the target discharge power is the maximum power released by the power battery under the current temperature and remaining charge conditions; The control module is used to acquire the vehicle's required power and energy during a preset trip, and to control the heating of the power battery based on the required power, the required energy, the available power, and the target discharge power. The heating control of the power battery based on the required power, the required power, the usable power, and the target discharge power includes: 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 heat the power battery; the available power is determined based on the difference between the remaining power and the power battery at the equilibrium point. When the available power is not greater than the required power or / and the target discharge power is not greater than the required power, the vehicle is controlled to actively heat the power battery.

6. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the battery heating control method as described in any one of claims 1 to 4.

7. A vehicle, characterized in that, The vehicle includes the battery heating control system as described in claim 5.

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