Electric vehicle charging control method, device and vehicle

Abstract

The present application provides an electric vehicle charging control method, device and vehicle, belonging to the field of automobile technology. It includes: when detecting that the vehicle is connected to a charging device, obtaining various information related to charging; based on the power consumption of the thermal management system in each charging mode and various information, confirming the input power actually received by the battery system in each charging mode; according to the input power actually received by the battery system and the power required by the battery system, confirming the charging time and energy consumption required for each charging mode. Using the electric vehicle charging control method and device provided by the present application, by calculating the power consumption of the thermal management system in the entire charging process, confirming the input power actually received by the battery system in each charging mode, and accurately calculating the charging time of the battery system, the problem of multiple jumps in the remaining charging time caused by multiple starts and stops of the thermal management system in a single charging process, which affects the user experience, is solved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of automobile technology, and more specifically, to a charging control method, device and vehicle for an electric vehicle. Background Art

[0002] With the progress of the times, the per capita car ownership in China continues to increase, and consumers have higher and higher requirements for vehicle performance. How to improve user experience has also become a major research topic for major automobile manufacturers.

[0003] Batteries have different charging efficiencies at different temperatures. Therefore, existing vehicles are equipped with thermal management systems for battery systems. The thermal management system is used to heat or cool the battery system so that the battery system can work within a suitable temperature range. The most common control method is for the thermal management system to control the system through temperature thresholds. However, the thermal management system may start and stop multiple times during a single charge, and changes in the power consumption of the thermal management system will affect the calculation of the remaining charging time, causing the remaining charging time to jump and affect the user experience. Therefore, the thermal management system starts and stops multiple times during a single charge, causing multiple jumps in the remaining charging time, affecting the user experience, which is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present application provide an electric vehicle charging control method, device and vehicle, aiming to solve the problem that the thermal management system is started and stopped multiple times during a single charging process, causing multiple jumps in the remaining charging time and affecting the user experience.

[0005] A first aspect of an embodiment of the present application provides an electric vehicle charging control method, comprising:

[0006] When detecting that the vehicle is connected to the charging device, obtaining various information related to charging, wherein the various information at least includes the power consumption of components of the vehicle being turned on, the output power of the charging device, and the power required by the battery system on the vehicle;

[0007] determining input power actually received by the battery system in each of the multiple charging modes based on power usage of the thermal management system in each of the multiple charging modes and the multiple information;

[0008] The charging time and energy consumption required for each of the multiple charging modes are determined based on the input power actually received by the battery system and the power required by the battery system.

[0009] Optionally, the method further comprises:

[0010] Outputting a charging selection interface according to the charging time and energy consumption required for each of the multiple charging modes, the charging selection interface including selection controls corresponding to the multiple charging modes respectively;

[0011] In response to the user's selection of the target selection control, the vehicle is charged according to the charging mode corresponding to the target selection control.

[0012] Optionally, the method further comprises:

[0013] During the charging process, the output power of the charging device, the battery system capacity, the power consumption of the thermal management system, and the battery system temperature are obtained in real time;

[0014] The distribution scheme of the output power of the charging device is adjusted in real time according to the output power of the charging device, the capacity of the battery system, the power consumption of the thermal management system and the temperature of the battery system.

[0015] Optionally, the power consumption of the thermal management system in each of the multiple charging modes is obtained by the following steps:

[0016] Obtaining charging parameters, where the charging parameters include one or more of ambient temperature, battery system temperature, battery average specific heat capacity, battery system mass, and battery system self-heating rate;

[0017] For each charging mode, the power consumption of the thermal management system of the charging mode is determined according to the charging parameters and the heating rate and target temperature of the thermal management system of the charging mode.

[0018] Optionally, the multiple charging modes include a custom charging mode, and the custom charging mode is obtained by following the steps:

[0019] Output charging setting selection interface, the charging setting selection interface includes selection setting controls corresponding to the charging target power of the battery system and the charging time of the battery system;

[0020] In response to a user's selection and setting of a target selection setting control, the vehicle is charged according to a custom charging mode corresponding to the target selection setting control.

[0021] Optionally, the method further comprises:

[0022] Obtain the output power of the charging device in real time;

[0023] When the output power of the charging device is not greater than the output power threshold of the charging device, a prompt message is output to prompt the user whether to continue charging.

[0024] Optionally, the method further comprises:

[0025] Get charging time in real time;

[0026] When the charging time is not less than the charging time threshold, a prompt message is output to prompt the user whether to continue charging.

[0027] A second aspect of the present application provides an electric vehicle charging control device, the device comprising:

[0028] A first acquisition module: used to acquire various information related to charging when detecting that the vehicle is connected to the charging device, wherein the various information at least includes the power consumption of the components being turned on in the vehicle, the output power of the charging device, and the power required by the battery system on the vehicle;

[0029] A first confirmation module: used to confirm the input power actually received by the battery system in each of the multiple charging modes based on the power consumption of the thermal management system in each of the multiple charging modes and multiple information;

[0030] The second confirmation module is used to confirm the charging time and energy consumption required for each of the multiple charging modes according to the input power actually received by the battery system and the power required by the battery system.

[0031] Optionally, the device further comprises:

[0032] A first output module: used for outputting a charging selection interface according to the charging time and energy consumption required for each of the multiple charging modes, wherein the charging selection interface includes selection controls corresponding to the multiple charging modes respectively;

[0033] The first control module is used to charge the vehicle according to the charging mode corresponding to the target selection control in response to the user's selection of the target selection control.

[0034] The third aspect of the present application provides a car, which is provided with an electric vehicle charging control device as provided in the second aspect of the present application, and the electric vehicle charging control device is used to execute the electric vehicle charging control method provided in the first aspect of the present application.

[0035] Beneficial effects:

[0036] The electric vehicle charging control method provided by the present application, when detecting that the vehicle is connected to the charging device, the vehicle obtains a variety of information related to charging. Through the obtained information, before the battery system is charged, the total thermal management system power consumption in the entire charging process is comprehensively calculated to confirm the input power actually received by the battery system in each charging mode, and then accurately calculate the charging time of the battery system. In this way, it can provide users with the option of selecting a certain charging mode. After the user selects, the vehicle can be charged according to the charging mode selected by the user, instead of calculating the power consumption of each thermal management system according to each start and stop of the thermal management system during the charging process, thereby reducing or eliminating the problem of information jumps such as charging time caused by changes in the working state of the thermal management system, which affects the user experience, and solves the problem of multiple jumps in the remaining charging time caused by multiple starts and stops of the thermal management system in a single charging process, which affects the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application 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 any creative labor.

[0038] Figure 1 is a flowchart of the steps of an electric vehicle charging control method proposed in one embodiment of the present application;

[0039] Figure 2 It is a structural block diagram of an electric vehicle charging control device proposed in one embodiment of the present application. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] In the related technology, the more common control method is that the thermal management system controls the system through the temperature threshold, but the thermal management system may start and stop multiple times during a single charging process, and the change in the power consumption of the thermal management system will affect the calculation of the remaining charging time during charging, causing the remaining charging time to jump and affect the user experience. Therefore, the thermal management system starts and stops multiple times during a single charging process, causing multiple jumps in the remaining charging time, affecting the user experience, which is a technical problem that needs to be solved urgently.

[0042] In view of this, the electric vehicle charging control method provided by the present application, when detecting that the vehicle is connected to the charging device, the vehicle obtains a variety of information related to charging. Through the obtained information, before the battery system is charged, the total thermal management system power consumption in the entire charging process is comprehensively calculated to confirm the input power actually received by the battery system in each charging mode, and then accurately calculate the charging time of the battery system. In this way, it can provide users with the option of selecting a certain charging mode. After the user selects, the vehicle can be charged according to the charging mode selected by the user, instead of calculating the power consumption of each thermal management system according to each start and stop of the thermal management system during the charging process, thereby reducing or eliminating the problem of information jumps such as charging time caused by changes in the working state of the thermal management system, which affects the user experience, and solves the problem of multiple jumps in the remaining charging time caused by multiple starts and stops of the thermal management system in a single charging process, which affects the user experience.

[0043] Embodiment 1

[0044] Reference Figure 1 , shows a flowchart of the steps of an electric vehicle charging control method of the present application, such as Figure 1 As shown, the electric vehicle charging control method includes:

[0045] Step S1: when it is detected that the vehicle is connected to the charging device, a variety of information related to charging is obtained, wherein the various information at least includes the power consumption of the components of the vehicle being turned on, the output power of the charging device, and the power required by the battery system on the vehicle.

[0046] In this embodiment, when it is detected that the vehicle is connected to a charging device, the vehicle can obtain basic information of the charging device, and the basic information of the charging device includes at least the output power of the charging device; the power consumption of the components of the vehicle being turned on refers to the power consumption of all components in the vehicle that are using electricity. For example: the components of the vehicle being turned on may include high-voltage power components such as the air conditioner in the vehicle and the low-voltage control system in the vehicle; the required power of the battery system on the vehicle is calculated by the current initial power of the battery system and the target power of the battery system.

[0047] Step S2: based on the power consumption of the thermal management system in each of the multiple charging modes and multiple information, confirm the input power actually received by the battery system in each of the multiple charging modes.

[0048] In this embodiment, based on different charging modes, the thermal management system uses different power in each charging mode. The thermal management system is used to heat or cool the battery system so that the battery system can operate within an appropriate temperature range. Therefore, the operation of the thermal management system is fragmented. The prior art calculates the time based on each start and stop of the thermal management system, which will cause the problem of frequent jumps in the remaining charging time at the moment of start and stop. By calculating the power used by the thermal management system during the entire charging process, the charging time of the battery system can be accurately calculated, thereby reducing or eliminating the problem of information jumps such as charging time caused by changes in the working state of the thermal management system, which affects the user experience.

[0049] The output power of the charging device is the total input power received by the vehicle. The output power of the charging device is used to charge the battery system on the vehicle, provide power for the components of the vehicle that are being turned on, and provide power for thermal management. Therefore, the input power actually received by the battery system = the output power of the charging device - the power of the components of the vehicle that are being turned on - the power of the thermal management system.

[0050] Step S3: according to the input power actually received by the battery system and the power required by the battery system, the charging time and energy consumption required for each of the multiple charging modes are determined.

[0051] In this embodiment, the actual input power received by the battery system is W1, and the power required by the battery system is P B , charging time is t b , then t b =∫P B / dW1.

[0052] The electric vehicle charging control method provided by the present application, when detecting that the vehicle is connected to the charging device, the vehicle obtains a variety of information related to charging. Through the obtained information, before the battery system is charged, the total thermal management system power consumption in the entire charging process is comprehensively calculated to confirm the input power actually received by the battery system in each charging mode, and then accurately calculate the charging time of the battery system. In this way, it can provide users with the option of selecting a certain charging mode. After the user selects, the vehicle can be charged according to the charging mode selected by the user, instead of calculating the power consumption of each thermal management system according to each start and stop of the thermal management system during the charging process, thereby reducing or eliminating the problem of information jumps such as charging time caused by changes in the working state of the thermal management system, which affects the user experience, and solves the problem of multiple jumps in the remaining charging time caused by multiple starts and stops of the thermal management system in a single charging process, which affects the user experience.

[0053] Based on the above-mentioned electric vehicle charging control method, the present application provides the following examples of specific implementable embodiments. Under the premise of not conflicting with each other, the various examples can be combined arbitrarily to form another electric vehicle charging control method. It should be understood that the other electric vehicle charging control method formed by combining any examples should fall within the protection scope of the present application.

[0054] In a feasible implementation manner, the electric vehicle charging control method further includes:

[0055] Step S4: outputting a charging selection interface according to the charging time and energy consumption required for each of the multiple charging modes, wherein the charging selection interface includes selection controls corresponding to the multiple charging modes respectively.

[0056] The multiple charging modes include at least a high-efficiency charging mode, a fast charging mode and a long-life charging mode; the high-efficiency charging mode is a charging mode in which energy consumption is the priority control factor during the charging process, the fast charging mode is a charging mode in which the charging rate is the priority control factor during the charging process; the long-life charging mode is a charging mode in which the battery life is the priority control factor during the charging process.

[0057] The charging selection interface includes selection controls corresponding to a plurality of charging modes, and the selection controls corresponding to the plurality of charging modes include at least a charging mode, and a charging time and energy consumption corresponding to the charging mode.

[0058] Step S5: In response to the user's selection of the target selection control, the vehicle is charged according to the charging mode corresponding to the target selection control.

[0059] The vehicle is charged according to the charging mode corresponding to the target selection control selected by the user.

[0060] The electric vehicle charging control method provided in the present application has a human-computer interaction function. By accurately calculating the charging time and energy consumption required for each charging mode, a charging selection interface is output, and users can select the corresponding charging mode according to their needs, thereby improving the user experience.

[0061] In one feasible implementation manner, the vehicle presets a default charging mode, and the default charging mode is one of multiple charging modes. If the user does not select the target selection control within a preset time, the vehicle automatically controls to charge the vehicle according to the default charging mode.

[0062] In a feasible implementation manner, the electric vehicle charging control method further includes:

[0063] Step S6: During the charging process, the output power of the charging device, the capacity of the battery system, the power consumption of the thermal management system, and the temperature of the battery system are obtained in real time.

[0064] During the charging process, as the charging device continuously outputs electricity to the battery system, the output power of the charging device is constantly changing. The battery system has different capacities and service lives at different temperatures. Therefore, during the charging process, the battery system temperature, the battery system capacity at that temperature, the output power of the charging device, and the power consumption of the thermal management system are acquired in real time to accurately control the charging process.

[0065] Step S7: adjusting the distribution scheme of the output power of the charging device in real time according to the output power of the charging device, the capacity of the battery system, the power consumption of the thermal management system and the temperature of the battery system.

[0066] The real-time heat exchange during the charging process is calculated based on the output power of the charging device, the capacity of the battery system, and the power consumption of the thermal management system. The output power distribution plan of the charging device is adjusted in real time based on the battery system temperature and the charging performance of the battery system at that temperature.

[0067] For example: the output power of the charging device is 6000W, and the battery system capacity is 5000W. The extra 1000W can be used for thermal management by the thermal management system.

[0068] For example: the output power of the charging device is 5000W, and the battery system capacity is 6000W. There is no excess output power at this time. At this time, consider the charging efficiency of the battery system at the battery temperature and the self-heating rate of the battery system to determine whether a thermal management system must be used to heat the battery system. If the battery self-heating can achieve the heating purpose, the thermal management system can be controlled not to start; if the self-heating cannot achieve the heating purpose, part of the output power will be allocated for thermal management.

[0069] By obtaining the output power of the charging device, the capacity of the battery system, and the power consumption of the thermal management system in real time, the real-time heat exchange during the charging process is calculated. Combined with the battery system temperature and the charging performance of the battery system at that temperature, the output power distribution plan of the charging device is adjusted in real time to reasonably distribute the output power of the charging device, avoiding unnecessary thermal management energy consumption, and accurately controlling the entire charging process.

[0070] In another feasible implementation manner, the power consumption of the thermal management system in each of the multiple charging modes is obtained by the following steps:

[0071] Step S21: acquiring charging parameters, where the charging parameters include one or more of ambient temperature, battery system temperature, battery system average specific heat capacity, battery system mass, and battery system self-heating rate.

[0072] Obtain charging parameters, the ambient temperature is T2, the battery system temperature is T3, the average specific heat capacity of the battery system is C, the mass of the battery system is m, and the self-heating rate of the battery system is V3.

[0073] Step S22: for each charging mode, determine the power consumption of the thermal management system of the charging mode according to the charging parameters and the heating rate and target temperature of the thermal management system of the charging mode.

[0074] Different charging modes have different heating rates and target temperatures of the thermal management system. The heating rate V2 and target temperature T1 of the thermal management system are obtained for each charging mode. The heat conduction rate V1 dissipated to the environment during the thermal management of the battery system is calculated through the target temperature and ambient temperature. At this time, the thermal management time t = C*m*(T1-T3) / (V2+V3-V1). The power consumption of the thermal management system is calculated through the thermal management time.

[0075] For each charging mode, the power consumption of the thermal management system during the entire charging process is accurately calculated, the actual input power received by the battery system is confirmed, and the charging time of the battery system is accurately calculated, thereby reducing or eliminating the problem of information jumps such as charging time caused by changes in the working state of the thermal management system, which affects the user experience. This solves the problem of multiple jumps in the remaining charging time caused by multiple starts and stops of the thermal management system during a single charging process, affecting the user experience.

[0076] In another feasible implementation manner, the multiple charging modes include a custom charging mode, and the custom charging mode is obtained by the following steps:

[0077] Step S23: outputting a charging setting selection interface, wherein the charging setting selection interface includes selection setting controls corresponding to a charging target power of the battery system and a charging time of the battery system.

[0078] Output charging setting selection interface, users can set the charging target power or set the charging time of the battery system based on factors such as vehicle usage.

[0079] Step S24: In response to the user's selection and setting of the target selection and setting control, the vehicle is charged according to the custom charging mode corresponding to the target selection and setting control.

[0080] According to the user's selection and setting of the target selection setting control, a corresponding custom charging mode is generated, and the vehicle is charged according to the generated custom charging mode.

[0081] Users can set the charging time or charging target power according to their own needs, and generate a custom charging mode to charge the vehicle according to the user's settings. This fully considers user needs, improves the user's sense of control over vehicle charging, and enhances the user experience.

[0082] In a feasible implementation manner, the electric vehicle charging control method further includes:

[0083] Step S8: Obtain the output power of the charging device in real time.

[0084] During the charging process, as the charging device continuously outputs electricity to the battery system, the output power of the charging device is constantly changing. The output power of the charging device is acquired in real time to accurately grasp the output power of the charging device during the charging process.

[0085] Step S9: When the output power of the charging device is not greater than the output power threshold of the charging device, output a prompt message for prompting the user whether to continue charging.

[0086] When the output power of the charging device is not greater than the output power threshold of the charging device, it indicates that the charging capacity of the charging device is too low, so a prompt message is output to prompt the user to confirm whether to continue charging. For example, the output power threshold may be 0.5KW.

[0087] The output power of the charging device is obtained in real time. When the charging capacity of the charging device cannot meet the charging performance of the battery system, a prompt message is automatically output to prompt the user to confirm whether to continue charging, thus avoiding the problem of affecting the user experience due to the low charging capacity of the charging device.

[0088] In another feasible implementation, the electric vehicle charging control method further includes:

[0089] Step S10: Obtain charging time in real time.

[0090] Get the charging time in real time and accurately grasp the charging time during the charging process.

[0091] Step S11: when the charging time is not less than the charging time threshold, output a prompt message for prompting the user whether to continue charging.

[0092] When the charging time is not less than the charging time threshold, it indicates that too many electrical devices in the vehicle are turned on, causing the charging time to be too long, so a prompt message is output to prompt the user to confirm whether to continue charging. For example, the charging time threshold may be 10 hours.

[0093] The charging time is obtained in real time. When too many electrical devices in the car are turned on and the charging time is too long, a prompt message is automatically output to prompt the user to confirm whether to continue charging, avoiding the problem of affecting the user experience due to long charging time.

[0094] Embodiment 2

[0095] Based on the same inventive concept, another embodiment of the present application provides an electric vehicle charging control device, the device is used to execute the electric vehicle charging control method provided in the first embodiment of the present application; Figure 2 , shows a structural block diagram of an electric vehicle charging control device, such as Figure 2 Shown include:

[0096] The first acquisition module 11 is used to acquire various information related to charging when detecting that the vehicle is connected to the charging device, wherein the various information at least includes the power consumption of the components of the vehicle being turned on, the output power of the charging device, and the power required by the battery system on the vehicle;

[0097] A first confirmation module 12 is used to confirm the input power actually received by the battery system in each of the multiple charging modes based on the power consumption of the thermal management system in each of the multiple charging modes and multiple information;

[0098] The second confirmation module 13 is used to confirm the charging time and energy consumption required for each of the multiple charging modes according to the input power actually received by the battery system and the power required by the battery system.

[0099] The electric vehicle charging control device provided by the present application obtains a variety of charging-related information when the vehicle detects that the vehicle is connected to the charging device. Through the obtained information, before the battery system is charged, the total thermal management system power consumption in the entire charging process is comprehensively calculated to confirm the input power actually received by the battery system in each charging mode, and then accurately calculate the charging time of the battery system. In this way, it can provide users with the option of selecting a certain charging mode. After the user makes a selection, the vehicle can be charged according to the charging mode selected by the user, instead of calculating the power consumption of each thermal management system according to each start and stop of the thermal management system during the charging process. This reduces or eliminates the problem of information jumps such as charging time caused by changes in the working state of the thermal management system, which affects the user experience, and solves the problem of multiple jumps in the remaining charging time caused by multiple starts and stops of the thermal management system in a single charging process, which affects the user experience.

[0100] In a feasible implementation manner, the electric vehicle charging control device further includes:

[0101] The first output module 14 is used to output a charging selection interface according to the charging time and energy consumption required for each of the multiple charging modes, and the charging selection interface includes selection controls corresponding to the multiple charging modes respectively;

[0102] The first control module 15 is configured to charge the vehicle according to a charging mode corresponding to the target selection control in response to a user's selection of the target selection control.

[0103] The electric vehicle charging control method provided in the present application has a human-computer interaction function. By accurately calculating the charging time and energy consumption required for each charging mode, a charging selection interface is output, and users can select the corresponding charging mode according to their needs, thereby improving the user experience.

[0104] In a feasible implementation manner, the electric vehicle charging control device further includes:

[0105] The second acquisition module 16 is used to acquire the output power of the charging device, the capacity of the battery system, the power consumption of the thermal management system and the temperature of the battery system in real time during the charging process.

[0106] The second control module 17 is used to adjust the distribution scheme of the output power of the charging device in real time according to the output power of the charging device, the capacity of the battery system, the power consumption of the thermal management system and the temperature of the battery system.

[0107] By obtaining the output power of the charging device, the capacity of the battery system, and the power consumption of the thermal management system in real time, the real-time heat exchange during the charging process is calculated. Combined with the battery system temperature and the charging performance of the battery system at that temperature, the output power distribution plan of the charging device is adjusted in real time to reasonably distribute the output power of the charging device, avoiding unnecessary thermal management energy consumption, and accurately controlling the entire charging process.

[0108] In a feasible implementation manner, the first confirmation module 12 includes:

[0109] The first acquisition unit 121 is used to acquire charging parameters, where the charging parameters include one or more of the ambient temperature, the battery system temperature, the average specific heat capacity of the battery system, the battery system mass, and the battery system self-heating rate.

[0110] The first determining unit 122 is used to determine the power consumption of the thermal management system of each charging mode according to the charging parameters and the heating rate and target temperature of the thermal management system of the charging mode.

[0111] For each charging mode, the power consumption of the thermal management system during the entire charging process is accurately calculated, the actual input power received by the battery system is confirmed, and the charging time of the battery system is accurately calculated, thereby reducing or eliminating the problem of information jumps such as charging time caused by changes in the working state of the thermal management system, which affects the user experience. This solves the problem of multiple jumps in the remaining charging time caused by multiple starts and stops of the thermal management system during a single charging process, affecting the user experience.

[0112] In a feasible implementation manner, the first confirmation module 12 further includes:

[0113] The first output unit 123 is used to output a charging setting selection interface, wherein the charging setting selection interface includes selection setting controls corresponding to a charging target power of the battery system and a charging time of the battery system.

[0114] The first control unit 124 is configured to charge the vehicle according to a custom charging mode corresponding to the target selection setting control in response to the user's selection setting of the target selection setting control.

[0115] Users can set the charging time or charging target power according to their own needs, and generate a custom charging mode to charge the vehicle according to the user's settings. This fully considers user needs, improves the user's sense of control over vehicle charging, and enhances the user experience.

[0116] In a feasible implementation manner, the electric vehicle charging control device further includes:

[0117] The third acquisition module 18 is used to acquire the output power of the charging device in real time.

[0118] The second output module 19 is used for outputting prompt information for prompting the user whether to continue charging when the output power of the charging device is not greater than the output power threshold of the charging device.

[0119] The output power of the charging device is obtained in real time. When the charging capacity of the charging device cannot meet the charging performance of the battery system, a prompt message is automatically output to prompt the user to confirm whether to continue charging, thus avoiding the problem of affecting the user experience due to the low charging capacity of the charging device.

[0120] In a feasible implementation manner, the electric vehicle charging control device further includes:

[0121] The fourth acquisition module 110 is used to acquire the charging time in real time.

[0122] The third output module 111 is used for outputting prompt information for prompting the user whether to continue charging when the charging time is not less than the charging time threshold.

[0123] The charging time is obtained in real time. When too many electrical devices in the car are turned on and the charging time is too long, a prompt message is automatically output to prompt the user to confirm whether to continue charging, avoiding the problem of affecting the user experience due to long charging time.

[0124] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0125] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0126] Embodiment 3

[0127] An embodiment of the present application also provides a car, which may include an electric vehicle charging control device as provided in Embodiment 2 of the present application, and the electric vehicle charging control device is used to execute the electric vehicle charging control method provided in Embodiment 1 of the present application.

[0128] In a car provided by the present application, when it is detected that the vehicle is connected to a charging device, the vehicle obtains a variety of information related to charging. Through the obtained information, before the battery system is charged, the total thermal management system power consumption in the entire charging process is calculated as a whole, and the input power actually received by the battery system in each charging mode is confirmed, and then the charging time of the battery system is accurately calculated. In this way, a user can be provided with an option to select a charging mode. After the user selects, the vehicle can be charged according to the charging mode selected by the user, instead of calculating the power consumption of each thermal management system according to each start and stop of the thermal management system during the charging process. This reduces or eliminates the problem of information jumps such as charging time caused by changes in the working state of the thermal management system, which affects the user experience, and solves the problem of multiple jumps in the remaining charging time caused by multiple starts and stops of the thermal management system in a single charging process, which affects the user experience.

[0129] It should be understood that although the present specification has described the preferred embodiments of the present invention, those skilled in the art may make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0130] The above is a detailed introduction to an electric vehicle charging control method, device and vehicle provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for controlling charging of an electric vehicle, characterized in that: The method comprises: When detecting that the vehicle is connected to a charging device, obtaining a variety of information related to charging, wherein the various information at least includes the power consumption of components of the vehicle being turned on, the output power of the charging device, and the power required by the battery system on the vehicle; Based on the power consumption of the thermal management system in each of the multiple charging modes and the multiple information, determining the input power actually received by the battery system in each of the multiple charging modes; Determining the charging time and energy consumption required for each of the multiple charging modes according to the input power actually received by the battery system and the power required by the battery system; During the charging process, the output power of the charging device, the battery system capacity, the power consumption of the thermal management system, and the battery system temperature are obtained in real time; Adjusting the distribution scheme of the output power of the charging device in real time according to the output power of the charging device, the capacity of the battery system, the power consumption of the thermal management system and the temperature of the battery system; The allocation scheme of adjusting the output power of the charging device in real time according to the output power of the charging device, the capacity of the battery system, the power consumption of the thermal management system and the temperature of the battery system includes: When the output power of the charging device is greater than the capacity of the battery system, the excess of the output power of the charging device over the capacity of the battery system is used for thermal management by a thermal management system; When the output power of the charging device is less than or equal to the capacity of the battery system, the charging efficiency of the battery system at the temperature of the battery system and the self-heating rate of the battery system are considered to determine whether it is necessary to use a thermal management system to heat the battery system. If the self-heating of the battery can achieve the heating purpose, the thermal management system is controlled not to start; if the self-heating cannot achieve the heating purpose, part of the output power is allocated for thermal management.

2. The method according to claim 1, characterized in that The method further comprises: Outputting a charging selection interface according to the charging time and energy consumption required for each of the multiple charging modes, wherein the charging selection interface includes selection controls corresponding to the multiple charging modes respectively; In response to a user's selection of a target selection control, the vehicle is charged according to a charging mode corresponding to the target selection control.

3. The method according to claim 1, characterized in that The power consumption of the thermal management system in each of the multiple charging modes is obtained by the following steps: Acquiring charging parameters, wherein the charging parameters include one or more of ambient temperature, battery system temperature, battery average specific heat capacity, battery system mass, and battery system self-heating rate; For each charging mode, the power consumption of the thermal management system of the charging mode is determined according to the charging parameters and the heating rate and target temperature of the thermal management system of the charging mode.

4. The method according to claim 1, characterized in that: The multiple charging modes include a custom charging mode, and the custom charging mode is obtained by following steps: Outputting a charging setting selection interface, the charging setting selection interface including selection setting controls corresponding to a charging target power of the battery system and a charging time of the battery system respectively; In response to a user's selection and setting of a target selection setting control, the vehicle is charged according to a custom charging mode corresponding to the target selection setting control.

5. The method according to claim 1, characterized in that: The method further comprises: Acquiring the output power of the charging device in real time; When the output power of the charging device is not greater than the output power threshold of the charging device, a prompt message is output to prompt the user whether to continue charging.

6. The method according to claim 1, characterized in that The method further comprises: Acquiring the charging time in real time; When the charging time is not less than the charging time threshold, a prompt message is outputted to prompt the user whether to continue charging.

7. An electric vehicle charging control device, characterized in that: The device comprises: A first acquisition module: used to acquire various information related to charging when detecting that the vehicle is connected to the charging device, wherein the various information at least includes the power consumption of the components of the vehicle being turned on, the output power of the charging device, and the power required by the battery system on the vehicle; A first confirmation module: used for confirming the input power actually received by the battery system in each of the multiple charging modes based on the power consumption of the thermal management system in each of the multiple charging modes and the multiple information; A second confirmation module: used to confirm the charging time and energy consumption required for each of the multiple charging modes according to the input power actually received by the battery system and the power required by the battery system; The second acquisition module is used to obtain the output power of the charging device, the battery system capacity, the power consumption of the thermal management system and the battery system temperature in real time during the charging process; The second control module is used to adjust the distribution scheme of the output power of the charging device in real time according to the output power of the charging device, the capacity of the battery system, the power consumption of the thermal management system and the temperature of the battery system; The allocation scheme of adjusting the output power of the charging device in real time according to the output power of the charging device, the capacity of the battery system, the power consumption of the thermal management system and the temperature of the battery system includes: When the output power of the charging device is greater than the capacity of the battery system, the excess of the output power of the charging device over the capacity of the battery system is used for thermal management by a thermal management system; When the output power of the charging device is less than or equal to the capacity of the battery system, the charging efficiency of the battery system at the temperature of the battery system and the self-heating rate of the battery system are considered to determine whether it is necessary to use a thermal management system to heat the battery system. If the self-heating of the battery can achieve the heating purpose, the thermal management system is controlled not to start; if the self-heating cannot achieve the heating purpose, part of the output power is allocated for thermal management.

8. The device according to claim 7, characterized in that The device also includes: A first output module: configured to output a charging selection interface according to the charging time and energy consumption required for each of the multiple charging modes, wherein the charging selection interface includes selection controls corresponding to the multiple charging modes respectively; The first control module is configured to charge the vehicle according to a charging mode corresponding to a target selection control in response to a user's selection of the target selection control.

9. A car, characterized in that: An electric vehicle charging control device as described in any one of claims 7-8 is provided, and the electric vehicle charging control device is used to execute the electric vehicle charging control method as described in any one of claims 1-6.

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