Vehicle charging control method and device, vehicle and electronic equipment

Abstract

The invention relates to a vehicle charging control method and device, a vehicle and electronic equipment, relates to the technical field of vehicle control, and aims to improve the vehicle charging efficiency in a low-temperature environment. The method comprises the steps that in response to a received charging connection signal, whether a battery meets a pulse heating starting condition or not is determined based on state information of the battery; in response to determining that the battery meets the pulse heating starting condition, performing pulse heating on the battery; and after the pulse heating is completed, the vehicle is controlled to enter the charging mode, so that automatic connection of the pulse heating and the charging process in the low-temperature environment can be realized, and the charging efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a vehicle charging control method, device, vehicle, and electronic equipment. Background Art

[0002] In the field of new energy vehicles, the low-temperature performance of batteries is one of the key technical bottlenecks restricting their widespread application. In low-temperature environments, the conductivity of the power battery electrolyte decreases significantly, and the internal resistance increases significantly, which in turn leads to reduced charging efficiency.

[0003] To meet this challenge, pulse heating technology has become an important means to ensure battery performance in low-temperature environments. Compared with traditional external heating methods, pulse heating has the advantages of high energy utilization, low system complexity, and fast heating speed. For example, a related technology proposes to use pulse heating to achieve rapid and uniform heating of the battery, with high energy utilization, reducing the complexity and cost of the heating system. Another related technology proposes to determine the saturation current of the motor based on the maximum negative electrode potential, and further determine the maximum pulse heating current of the motor, which can maximize the heating rate of the battery while ensuring battery safety, thereby improving the performance of the battery in low-temperature environments.

[0004] However, pulse heating relies on manual activation by the user and is not intelligent enough. Moreover, after confirming that the heating is finished, the user needs to manually start the charging operation, which is complicated and may affect the charging efficiency due to heating delay. Summary of the Invention

[0005] The present application provides a vehicle charging control method, device, vehicle and electronic equipment, which can realize the automatic connection between pulse heating and charging process in a low-temperature environment and improve charging efficiency.

[0006] According to a first aspect of the present application, a vehicle charging control method is provided, comprising: in response to receiving a charging connection signal, determining, based on battery status information, whether the battery meets a pulse heating activation condition. In response to determining that the battery meets the pulse heating activation condition, pulse heating the battery. After the pulse heating is completed, controlling the vehicle to enter a charging mode.

[0007] According to the above technical means, in a low temperature environment, the viscosity of the battery electrolyte increases, the migration rate of lithium ions decreases, and the conductivity of the battery decreases, which in turn leads to a decrease in charging efficiency. Therefore, when the present application determines that the battery meets the pulse heating start-up conditions, the battery temperature is raised to an appropriate range through pulse heating before charging, and the charging mode is automatically entered after the pulse heating is completed. This can not only improve the charging efficiency and make the charging process safer and more efficient, but also improve the convenience of charging. In addition, based on the dynamic judgment of whether to turn on pulse heating based on the battery status information, meaningless heating processes can be avoided and energy waste can be reduced. At the same time, by detecting the charging connection signal, it is automatically determined whether the heating conditions are met, without the need for additional user operations, which greatly simplifies the usage process.

[0008] In one possible approach, the aforementioned status information includes the battery's state of charge (SOC), battery temperature, battery voltage, and a heating fault status value. Based on this information, a determination is made as to whether the battery meets the pulse heating activation conditions, including determining a maximum allowable duration for pulse heating of the battery. Based on the SOC and battery temperature, a charge time benefit is determined; the charge time benefit represents the estimated reduction in charge time associated with performing pulse heating prior to charging. Based on the battery temperature, battery voltage, heating fault status value, maximum allowable duration, and charge time benefit, a determination is made as to whether the battery meets the pulse heating activation conditions.

[0009] According to the above technical means, this application can avoid the risk of battery material aging or thermal runaway caused by excessive heating time and ensure battery safety by determining the maximum allowable time for pulse heating. Quantifying the charging time benefit based on the state of charge and battery temperature can provide a basis for subsequent judgment on whether to heat. Finally, through multi-dimensional status monitoring such as the maximum allowable time limit, charging time benefit, battery temperature, battery voltage, and heating fault status value, pulse heating can be accurately triggered to avoid ineffective energy consumption.

[0010] In one possible approach, determining whether the battery meets the pulse heating start-up conditions is based on the battery temperature, battery voltage, heating fault status value, maximum allowed time and charging time benefit, including: determining that the battery meets the pulse heating start-up conditions in response to determining that the battery temperature is less than or equal to a first temperature threshold, the battery voltage is greater than or equal to a first voltage threshold, the heating fault status value indicates that the battery does not have a heating fault, the maximum allowed time is greater than or equal to a first time threshold and the charging time benefit is greater than or equal to a second time threshold.

[0011] According to the above technical means, the present application will only turn on pulse heating when the above five conditions are met at the same time, so as to avoid misoperation caused by single parameter judgment and improve charging safety and charging efficiency. Among them, through the dual constraints of the first time threshold and the second time threshold, it is ensured that the total charging time after heating (i.e. heating time + charging time after heating) is significantly lower than direct cold charging and cannot exceed the maximum allowable heating time. By setting the first voltage threshold, the risk of battery damage caused by forced heating when the battery voltage is insufficient can be prevented. By setting the first temperature threshold, meaningless heating in a normal temperature environment can be avoided. By monitoring the heating fault state, the risk of thermal runaway caused by forced heating during battery failure can be avoided.

[0012] In one possible approach, determining the charging time benefit based on the state of charge and battery temperature includes: estimating a first charging time based on the state of charge and battery temperature; wherein the first charging time is the charging time of the battery without pulse heating; estimating a pulse heating time when the battery is heated from the battery temperature to a target temperature based on the temperature rise rate; estimating a second charging time; wherein the second charging time is the charging time when the battery is charged at the target temperature; and determining the charging time benefit based on the first charging time, the second charging time, and the pulse heating time.

[0013] According to the above technical means, the present application can scientifically evaluate the charging time benefit brought by pulse heating by combining the first charging time, pulse heating time and second charging time, and provide a basis for whether to perform pulse heating.

[0014] In one possible approach, determining the charging time benefit based on the first charging time, the second charging time, and the pulse heating time includes determining the target total charging time as the sum of the pulse heating time and the second charging time, and determining the charging time benefit as the difference between the first charging time and the target total charging time.

[0015] In one possible embodiment, the method further includes: during the pulse heating of the battery, in response to determining that the battery meets a pulse heating shutdown condition, exiting the pulse heating.

[0016] Based on the above technical means, this application uses real-time monitoring of multiple dimensions such as temperature, voltage, fault status, and time to intelligently exit the pulse heating mode when it determines that the battery meets the pulse heating shutdown conditions to protect the health of the battery.

[0017] In one possible embodiment, the pulse heating shutdown condition includes any one of the following: the battery temperature of the battery is greater than or equal to a second temperature threshold; the battery voltage of the battery is less than or equal to a second voltage threshold for a first preset time continuously; the battery fault status value of the battery indicates that the battery has a heating fault; the pulse heating duration of the battery is greater than the maximum allowable time for pulse heating of the battery.

[0018] According to the above technical means, the present application automatically exits the pulse heating mode when any of the above conditions are met. Among them, when the battery temperature of the battery is greater than or equal to the second temperature threshold, timely exiting the pulse heating can avoid the risk of thermal runaway caused by battery overheating. When the battery voltage of the battery is less than or equal to the second voltage threshold for a first preset time in a row, exiting the pulse heating can avoid battery damage caused by forced heating due to low voltage. Through real-time monitoring of the fault status, it is possible to quickly respond to heating failures in the battery, exit the pulse heating in time, and ensure the safety of the battery system. When the pulse heating duration is greater than the maximum allowed time for pulse heating of the battery, timely exiting the pulse heating can avoid the risk of heat accumulation caused by heating timeout.

[0019] In one possible embodiment, the method further includes: during the pulse heating of the battery, in response to receiving an immediate charging instruction, exiting the pulse heating.

[0020] Based on the above technical means, this application can quickly respond to user charging needs and improve user experience.

[0021] In one possible embodiment, the method further includes: determining the battery temperature of the battery after the pulse heating is completed; in response to the battery temperature of the battery being less than a third temperature threshold after the pulse heating is completed, outputting a prompt message, wherein the prompt message is used to prompt the battery to be heated before charging.

[0022] According to the above technical means, the present application can prompt the user to continue heating if the battery temperature is still too low after pulse heating to ensure charging at an appropriate temperature.

[0023] According to a second aspect provided by the present application, a vehicle charging control device is provided, which includes a determination unit, a heating unit, and a control unit.

[0024] The determining unit is configured to determine whether the battery meets a pulse heating start-up condition based on the battery status information in response to receiving the charging connection signal.

[0025] The heating unit is configured to perform pulse heating on the battery in response to determining that the battery meets a pulse heating start-up condition.

[0026] The control unit is used to control the vehicle to enter the charging mode after the pulse heating is completed.

[0027] In one possible manner, the status information includes the battery's state of charge, battery temperature, battery voltage, and heating fault status value. On this basis, the determination unit further includes a first determination subunit, a second determination subunit, and a third determination subunit. The first determination subunit is used to determine the maximum allowable time for pulse heating of the battery. The second determination subunit is used to determine the charging time benefit based on the state of charge and the battery temperature; wherein the charging time benefit is the expected shortening of the charging time by the charging mode of performing pulse heating before charging. The third determination subunit is used to determine whether the battery meets the pulse heating start-up conditions based on the battery temperature, battery voltage, heating fault status value, maximum allowable time, and charging time benefit.

[0028] In one possible embodiment, the third determination subunit is specifically used to determine that the battery meets the pulse heating start-up conditions in response to determining that the battery temperature is less than or equal to a first temperature threshold, the battery voltage is greater than or equal to a first voltage threshold, the heating fault status value indicates that the battery does not have a heating fault, the maximum allowed time is greater than or equal to a first time threshold, and the charging time gain is greater than or equal to a second time threshold.

[0029] In one possible embodiment, the second determination subunit includes: a first estimation subunit, a second estimation subunit, and a fourth determination subunit. The first estimation subunit is configured to estimate, based on the temperature rise rate, a pulse heating time for heating the battery from the battery temperature to the target temperature. The second estimation subunit is configured to estimate a second charging time; the second charging time is the charging time for charging the battery at the target temperature. The fourth determination subunit is configured to determine a charging time benefit based on the first charging time, the second charging time, and the pulse heating time.

[0030] In one possible embodiment, the fourth determining subunit is specifically configured to determine the sum of the pulse heating time and the second charging time as the target total elapsed time, and determine the difference between the first charging time and the target total elapsed time as the charging time benefit.

[0031] In one possible embodiment, the determination unit further includes a fifth determination subunit and an output subunit. The fifth determination subunit is configured to determine the battery temperature of the battery after the pulse heating is completed. The output subunit is configured to output a prompt message in response to the battery temperature being less than a third temperature threshold after the pulse heating is completed. The prompt message is configured to prompt the user to heat the battery before charging.

[0032] According to a third aspect provided by the present application, a vehicle is provided, wherein the vehicle is equipped with the vehicle charging control device according to the second aspect.

[0033] According to the fourth aspect provided by the present application, an electronic device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute instructions to implement the method of the above-mentioned first aspect and any possible implementation method thereof.

[0034] According to the fifth aspect provided by the present application, a computer-readable storage medium is provided. When the instructions in the computer-readable storage medium are executed by the processor of an electronic device, the electronic device is enabled to execute the method in the above-mentioned first aspect and any possible implementation method thereof.

[0035] According to the sixth aspect provided by the present application, a computer program product is provided, which includes computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes the method of the above-mentioned first aspect and any possible implementation method thereof.

[0036] It should be noted that the technical effects brought about by any implementation method in the second to sixth aspects can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here.

[0037] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of an implementation environment of a vehicle charging control method provided in an embodiment of the present application;

[0039] Figure 2 A flow chart of a vehicle charging control method provided in an embodiment of the present application;

[0040] Figure 3 A flow chart of another vehicle charging control method provided in an embodiment of the present application;

[0041] Figure 4 A schematic structural diagram of a vehicle charging control device provided in an embodiment of the present application;

[0042] Figure 5 A block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to enable ordinary people in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0044] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0045] In the embodiments of this application, words such as "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of this application should not be interpreted as being more preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0046] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0047] The vehicle control method provided in the embodiments of the present application can be applied in a vehicle. A vehicle may also be referred to as a vehicle, a mobile carrier, an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), a fuel cell vehicle (FCV), an autonomous vehicle, an intelligent and connected vehicle (ICV), or a driverless vehicle.

[0048] In the embodiments of this application, the vehicle may be a sedan, a sport utility vehicle (SUV), a truck, an electric vehicle, a motorcycle, a tricycle, a special vehicle (such as an ambulance, fire truck, police car, etc.), a driverless taxi, an intelligent network-connected bus, an autonomous logistics vehicle, an electric truck, etc. Furthermore, this method is also applicable to various special-purpose vehicles, such as agricultural vehicles, mining vehicles, forestry vehicles, airport vehicles, and port vehicles. This application does not impose any specific restrictions on this.

[0049] like Figure 1 As shown, the implementation environment of the vehicle charging control provided by the embodiment of the present application includes: a vehicle charging control device 101 and a battery 102 deployed in a vehicle 100.

[0050] In response to receiving the charging connection signal, the vehicle charging control device 101 can obtain the status information of the battery 102. Based on the status information of the battery 102, the vehicle charging control device 101 can then determine whether the battery 102 meets the pulse heating start-up conditions. If the battery 102 meets the pulse heating start-up conditions, the vehicle charging control device 101 can perform pulse heating on the battery 102. Finally, after the pulse heating is completed, the vehicle charging control device 101 can control the vehicle 100 to enter the charging mode.

[0051] Optionally, Figure 1 The vehicle charging control device 101 may be a terminal, a server, or other types of electronic devices. Figure 1 What is shown in the figure is only an example of the device form of the vehicle charging control device 101 and does not constitute a limitation thereto.

[0052] In the case where the vehicle charging control device 101 is a terminal, the terminal may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection capability, or other processing devices connected to a wireless modem. The terminal may communicate with one or more core networks via a radio access network (RAN). The terminal may be a mobile terminal, such as a computer with a mobile terminal, which exchanges language and / or data with a radio access network, for example, a mobile phone, a tablet computer, a laptop computer, a netbook, a personal digital assistant (PDA). This application does not impose any restrictions on this.

[0053] In the case where the vehicle charging control device 101 is a server, the server can be a single server, or a server cluster composed of multiple servers. In some embodiments, the server cluster can also be a distributed cluster. This application does not impose any restrictions on this.

[0054] It should be noted that the structure illustrated in the embodiments of this application does not limit the vehicle 100. The vehicle 100 may include more or fewer components than shown, or some components may be combined or separated, or arranged differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0055] For ease of understanding, the vehicle charging control method provided in this application is described in detail below with reference to the accompanying drawings.

[0056] like Figure 2 As shown, a vehicle charging control method provided by an embodiment of the present application includes:

[0057] S201 : In response to receiving a charging connection signal, determine whether the battery meets a pulse heating start condition based on battery status information.

[0058] In the embodiments of the present application, the battery status information includes the battery state of charge, battery temperature, battery voltage, and heating fault status value, etc., which are not limited to this. Among them, the battery (i.e., battery pack) contains multiple battery cells, the battery temperature is the lowest temperature among the multiple battery cell temperatures, and the battery voltage is the lowest voltage among the multiple battery cell voltages. The heating fault status value can be used to indicate whether the battery has a heating fault. For example, a heating fault status value of 1 indicates that the battery has a heating fault, and a heating fault status value of 0 indicates that the battery does not have a heating fault.

[0059] In some embodiments, a battery management system (BMS) and a vehicle control unit (VCU) are deployed in the vehicle. Upon detecting that a charging gun is plugged into the vehicle's charging port, the VCU can send a charging connection signal to the BMS. Accordingly, the BMS can obtain battery status information in response to receiving the charging connection signal and, based on the status information, determine whether the battery meets the pulse heating activation conditions.

[0060] S202 : In response to determining that the battery meets the pulse heating start-up condition, perform pulse heating on the battery.

[0061] In some embodiments, when the BMS determines that the battery meets the pulse heating start-up conditions, it can send a pulse heating mode instruction to the electric drive system, so that the electric drive system uses the inductance of the motor winding and the internal resistance of the battery to build an LC oscillation circuit, and generates a bidirectional pulse current in the range of ±400 amps (A) through high-frequency PWM modulation, so that the battery can quickly heat up due to heat generated by the internal resistance during the alternating process of discharge (energy storage in the inductor) and energy feedback (energy release from the inductor to the battery).

[0062] During the pulse heating process, the BMS can monitor the battery temperature, battery voltage, remaining pulse heating time and other information in real time, and send this information to the vehicle computer and / or user terminal in real time, so that the user can view the current heating status through the vehicle computer display and / or the application software installed in the user terminal.

[0063] S203: After the pulse heating is completed, control the vehicle to enter the charging mode.

[0064] In some embodiments, after the pulse heating is completed, the BMS can control the vehicle to automatically enter the charging mode.

[0065] In other embodiments, after pulse heating is completed, the BMS may output a card swipe charging prompt to prompt the user to swipe the card. The BMS may then control the vehicle to enter charging mode in response to receiving the charging card swipe instruction.

[0066] Based on the above technical solution, if the battery meets the pulse heating activation conditions, pulse heating is used to raise the battery temperature to an appropriate range before charging, and charging mode is automatically entered after pulse heating is completed. This not only improves charging efficiency, making the charging process safer and more efficient, but also enhances charging convenience. In addition, the dynamic determination of whether to activate pulse heating based on battery status information avoids unnecessary heating processes and reduces energy waste. At the same time, the automatic determination of whether heating conditions are met by detecting the charging connection signal eliminates the need for additional user operation, significantly simplifying the usage process.

[0067] In an optional embodiment, as Figure 3 As shown, the above S201 may specifically include: S301-S303.

[0068] S301: Determine the maximum allowable time for pulse heating of the battery.

[0069] In the embodiment of the present application, the initial maximum allowable time for pulse heating of the battery can be preset according to the physical properties of the battery, such as 15 minutes (min), 16 minutes, etc., and there is no limitation on this.

[0070] In some embodiments, in combination with the above-mentioned initial maximum allowed time, the BMS can determine the pulse heating time used before receiving the charging connection signal, and then determine the difference between the preset initial maximum allowed time and the used pulse heating time as the maximum allowed time (i.e., the remaining pulse heating time).

[0071] For example, assuming that the initial maximum allowed time is 15 minutes, if the used pulse heating time is 5 minutes, the maximum allowed time is 10 minutes.

[0072] S302: Determine charging time benefit based on the state of charge and battery temperature.

[0073] Among them, the charging time benefit is the expected shortening of the charging time by the charging mode of performing pulse heating before charging.

[0074] In some embodiments, the BMS has built-in charging time estimation software. On this basis, the BMS can input the state of charge and battery temperature into the charging time estimation software to obtain the first charging time output by the software. Then, based on the temperature rise rate, the BMS can estimate the pulse heating time when the battery is heated from the battery temperature to the target temperature. The BMS can also estimate the charging time (i.e., the second charging time) when the battery is charged at the target temperature. Finally, the BMS can determine the charging time benefit based on the first charging time, the second charging time, and the pulse heating time.

[0075] The first charging time is the charging time of the battery when pulse heating is not performed, and the second charging time is the charging time of the battery when charging at the target temperature.

[0076] In one example, the BMS may determine the sum of the pulse heating time and the second charging time as the target total charging time, and then determine the difference between the first charging time and the target total charging time as the charging time benefit.

[0077] S303 : Determine whether the battery meets the pulse heating start-up condition based on the battery temperature, battery voltage, heating fault status value, maximum allowable time, and charging time benefit.

[0078] In some embodiments, the BMS may determine that the battery meets the pulse heating start-up conditions in response to determining that the battery temperature is less than or equal to a first temperature threshold, the battery voltage is greater than or equal to a first voltage threshold, the heating fault status value indicates that the battery does not have a heating fault, the maximum allowed time is greater than or equal to a first time threshold, and the charging time benefit is greater than or equal to a second time threshold.

[0079] Optionally, the first temperature threshold, the first voltage threshold, the first time threshold, and the second time threshold can be determined according to actual needs. For example, the first temperature threshold can be -2 degrees Celsius (°C), the first voltage threshold can be 2.5 volts (V), the first time threshold can be 1 second, and the second time threshold can be 5 minutes. This application does not limit this.

[0080] Based on the above technical solution, this application will only turn on pulse heating when the above five conditions are met at the same time, so as to avoid misoperation caused by single parameter judgment and improve charging safety and charging efficiency. Among them, through the dual constraints of the first time threshold and the second time threshold, it is ensured that the total charging time after heating (i.e. heating time + charging time) is significantly lower than direct cold charging and cannot exceed the maximum allowable heating time. By setting the first voltage threshold, the risk of battery damage caused by forced heating when the battery voltage is insufficient can be prevented. By setting the first temperature threshold, meaningless heating in a normal temperature environment can be avoided. By monitoring the heating fault state, the risk of thermal runaway caused by forced heating during battery failure can be avoided.

[0081] In an optional implementation, the method provided in the embodiment of the present application further includes: exiting pulse heating.

[0082] In some embodiments, during pulse heating of a battery, the BMS may exit pulse heating in response to determining that the battery meets a pulse heating shutdown condition.

[0083] The pulse heating shutdown condition includes any of the following:

[0084] 1. The battery temperature of the battery is greater than or equal to a second temperature threshold.

[0085] Optionally, the second temperature threshold can be determined according to actual needs, and the second temperature is greater than or equal to the first temperature threshold. For example, the second temperature threshold can be 0° C., −2° C., etc., which is not limited thereto.

[0086] 2. The battery voltage of the battery is less than or equal to the second voltage threshold for a first preset time period.

[0087] Optionally, the second voltage threshold can be determined according to actual needs, and the second voltage threshold is less than or equal to the first voltage threshold. For example, the second voltage threshold can be 2.3V, 2.5V, etc., which is not limited to this.

[0088] Optionally, the first preset time can be determined according to actual needs. For example, the first preset time can be 2 seconds, 3 seconds, etc., which is not limited to this.

[0089] 3. The battery fault status value of the battery indicates that the battery has a heating fault.

[0090] 4. The duration of pulse heating of the battery is greater than the maximum allowable time for pulse heating of the battery.

[0091] For example, if the maximum allowed time is 10 minutes, the pulse heating of the battery can be exited if the pulse heating duration exceeds 10 minutes.

[0092] In some embodiments, during pulse heating of the battery, the BMS may exit the pulse heating in response to receiving an immediate charge instruction.

[0093] Among them, the immediate charging instruction may include a card swiping charging instruction, an exit heating instruction, etc., which is not limited.

[0094] For example, a user can trigger the heating exit operation by pressing a virtual button on the vehicle computer. In response, the vehicle computer can send an exit heating instruction to the BMS. Accordingly, upon receiving the exit heating instruction, the BMS can stop pulse heating and send an exit heating prompt message or voice prompt to the vehicle computer and / or the user terminal.

[0095] Based on the above technical solution, the present application can automatically exit pulse heating when any pulse heating shutdown condition is met. For example, when the battery temperature of the battery is greater than or equal to the second temperature threshold, timely exiting pulse heating can avoid the risk of thermal runaway caused by battery overheating. When the battery voltage of the battery is less than or equal to the second voltage threshold for a first preset time, exiting pulse heating can avoid battery damage caused by forced heating due to low voltage. Through real-time monitoring of the fault status, it is possible to quickly respond to heating failures in the battery, exit pulse heating in time, and ensure the safety of the battery system. When the pulse heating duration is greater than the maximum allowed time for pulse heating of the battery, timely exiting pulse heating can avoid the risk of heat accumulation caused by heating timeout. In addition, the present application can also quickly respond to user charging needs, exit pulse heating and automatically enter charging mode, thereby improving user experience.

[0096] In an optional embodiment, the method provided in the embodiment of the present application further includes: the BMS may determine the battery temperature of the battery after the pulse heating is completed. Then, the BMS may output a prompt message in response to the battery temperature of the battery being less than a third temperature threshold after the pulse heating is completed.

[0097] The prompt information is used to remind the user to heat the battery before charging.

[0098] Optionally, the third temperature threshold may be determined according to actual needs. For example, the third temperature threshold may be -20°C, which is not limited.

[0099] In one example, the third temperature threshold is -20°C. After pulse heating is complete, if the BMS detects that the battery temperature is less than -20°C, the BMS can send a prompt to the vehicle computer or user terminal to inform the user that the current battery concentration is too low and to initiate other thermal management processes. If the BMS detects that the battery temperature is greater than or equal to -20°C, the BMS can control the vehicle to enter charging mode.

[0100] Optionally, other thermal management in the embodiments of the present application may include pressure controlled thermal (PCT), liquid circulation heating, etc., which are not limited to this.

[0101] like Figure 4 As shown, a vehicle charging control device provided in an embodiment of the present application includes: a determination unit 401, a heating unit 402 and a control unit 403.

[0102] The determining unit 401 is configured to determine whether the battery meets a pulse heating start-up condition based on battery status information in response to receiving a charging connection signal.

[0103] The heating unit 402 is configured to perform pulse heating on the battery in response to determining that the battery meets a pulse heating start condition.

[0104] The control unit 403 is used to control the vehicle to enter the charging mode after the pulse heating is completed.

[0105] In one possible manner, the status information includes the battery's state of charge, battery temperature, battery voltage, and heating fault status value. On this basis, the determination unit 401 also includes a first determination subunit, a second determination subunit, and a third determination subunit. Among them, the first determination subunit is used to determine the maximum allowable time for pulse heating of the battery. The second determination subunit is used to determine the charging time benefit based on the state of charge and the battery temperature; wherein the charging time benefit is the charging time that is expected to be shortened by the charging mode of performing pulse heating before charging. The third determination subunit is used to determine whether the battery meets the pulse heating start-up conditions based on the battery temperature, battery voltage, heating fault status value, maximum allowable time, and charging time benefit.

[0106] In one possible embodiment, the third determination subunit is specifically used to determine that the battery meets the pulse heating start-up conditions in response to determining that the battery temperature is less than or equal to a first temperature threshold, the battery voltage is greater than or equal to a first voltage threshold, the heating fault status value indicates that the battery does not have a heating fault, the maximum allowed time is greater than or equal to a first time threshold, and the charging time gain is greater than or equal to a second time threshold.

[0107] In one possible embodiment, the second determination subunit includes: a first estimation subunit, a second estimation subunit, and a fourth determination subunit. The first estimation subunit is configured to estimate, based on the temperature rise rate, a pulse heating time for heating the battery from the battery temperature to the target temperature. The second estimation subunit is configured to estimate a second charging time; the second charging time is the charging time for charging the battery at the target temperature. The fourth determination subunit is configured to determine a charging time benefit based on the first charging time, the second charging time, and the pulse heating time.

[0108] In one possible embodiment, the fourth determining subunit is specifically configured to determine the sum of the pulse heating time and the second charging time as the target total elapsed time, and determine the difference between the first charging time and the target total elapsed time as the charging time benefit.

[0109] In one possible embodiment, the determining unit 401 further includes a fifth determining subunit and an output subunit. The fifth determining subunit is configured to determine the battery temperature of the battery after the pulse heating is completed. The output subunit is configured to output a prompt message in response to the battery temperature being less than a third temperature threshold after the pulse heating is completed. The prompt message is configured to prompt the user to heat the battery before charging.

[0110] like Figure 5 As shown, an electronic device provided by an embodiment of the present application includes but is not limited to: a processor 501 and a memory 502.

[0111] The memory 502 is used to store executable instructions of the processor 501. It is understandable that the processor 501 is configured to execute instructions to implement the vehicle control method in the above embodiment.

[0112] It should be noted that those skilled in the art can understand that Figure 5 The electronic device structure shown in the figure does not limit the electronic device, and the electronic device may include Figure 5 More or fewer components may be shown, or certain components may be combined, or the components may be arranged differently.

[0113] The processor 501 is the control center of the electronic device. It connects the various parts of the entire electronic device using various interfaces and lines. By running or executing software programs and / or modules stored in the memory 502 and accessing data stored in the memory 502, it performs various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. The processor 501 may include one or more processing units. Optionally, the processor 501 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly handles wireless communications. It is understood that the modem processor may not be integrated into the processor 501.

[0114] The memory 502 can be used to store software programs and various data. The memory 502 may mainly include a program storage area and a data storage area. The program storage area may store an operating system, application programs required by at least one functional module (such as a determination unit, a processing unit, etc.), etc. In addition, the memory 502 may include a high-speed random access memory and a non-volatile memory. For example, the non-volatile memory may include at least one disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0115] In an exemplary embodiment, a computer-readable storage medium including instructions is further provided, such as a memory 502 including instructions. The above instructions can be executed by a processor 501 of an electronic device to implement the method in the above embodiment.

[0116] In actual implementation, Figure 4 The functions of the determination unit 401, the heating unit 402 and the control unit 403 can all be represented by Figure 5 The processor 501 in the embodiment calls the computer program stored in the memory 502. The specific execution process can be referred to the description of the method part in the above embodiment, which will not be repeated here.

[0117] Optionally, the computer-readable storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0118] In an exemplary embodiment, the present application also provides a computer program product including one or more instructions, which can be executed by the processor 501 of the electronic device to implement the method in the above embodiment.

[0119] It should be noted that when the instructions in the above-mentioned computer-readable storage medium or one or more instructions in the computer program product are executed by the processor of the electronic device, the various processes of the above-mentioned method embodiment are implemented and the same technical effect as the above-mentioned method can be achieved. To avoid repetition, they will not be repeated here.

[0120] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0121] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0122] Units described as separate components may or may not be physically separate, and components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0123] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0124] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0125] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A vehicle charging control method, characterized in that: The method comprises: In response to receiving a charging connection signal, determining whether the battery meets a pulse heating start-up condition based on battery status information; In response to determining that the battery meets a pulse heating start-up condition, performing pulse heating on the battery; After the pulse heating is completed, the vehicle is controlled to enter the charging mode.

2. The vehicle charging control method according to claim 1, characterized in that: The state information includes: the state of charge, battery temperature, battery voltage and heating fault state value of the battery; The determining, based on the battery status information, whether the battery meets the pulse heating start-up condition includes: determining a maximum allowable time for pulse heating of the battery; Determining a charging time benefit based on the state of charge and the battery temperature; wherein the charging time benefit is an estimated reduction in charging time by a charging mode that performs pulse heating before charging; It is determined whether the battery meets a pulse heating start-up condition according to the battery temperature, the battery voltage, the heating fault status value, the maximum allowed time, and the charging time benefit.

3. The vehicle charging control method according to claim 2, characterized in that: The determining, based on the battery temperature, the battery voltage, the heating fault status value, the maximum allowable time, and the charging time benefit, whether the battery meets the pulse heating start-up condition includes: In response to determining that the battery temperature is less than or equal to a first temperature threshold, the battery voltage is greater than or equal to a first voltage threshold, the heating fault status value indicates that the battery does not have a heating fault, the maximum allowed time is greater than or equal to a first time threshold, and the charging time benefit is greater than or equal to a second time threshold, it is determined that the battery meets the pulse heating start-up conditions.

4. The vehicle charging control method according to claim 2 or 3, characterized in that: The determining of the charging time benefit based on the state of charge and the battery temperature includes: estimating a first charging time based on the state of charge and the battery temperature; wherein the first charging time is a charging time of the battery when pulse heating is not performed; estimating a pulse heating time for heating the battery from the battery temperature to a target temperature based on the temperature rise rate; estimating a second charging time; wherein the second charging time is the charging time of the battery when charging at the target temperature; The charging time benefit is determined based on the first charging time, the second charging time, and the pulse heating time.

5. The vehicle charging control method according to claim 4, characterized in that: The determining the charging time benefit based on the first charging time, the second charging time, and the pulse heating time includes: Determine the sum of the pulse heating time and the second charging time as the target total charging time; The difference between the first charging time and the target total charging time is determined as the charging time benefit.

6. The vehicle charging control method according to claim 1, characterized in that: The method further comprises: During the pulse heating process of the battery, in response to determining that the battery meets a pulse heating shutdown condition, the pulse heating is exited.

7. The vehicle charging control method according to claim 6, characterized in that: The pulse heating shutdown condition includes any one of the following: A battery temperature of the battery is greater than or equal to a second temperature threshold; The battery voltage of the battery is less than or equal to a second voltage threshold for a first preset time continuously; The battery fault status value of the battery indicates that the battery has a heating fault; The duration of the pulse heating of the battery is greater than a maximum allowed time for pulse heating of the battery.

8. The vehicle charging control method according to claim 1, characterized in that: The method further comprises: During the pulse heating process of the battery, in response to receiving an immediate charging instruction, the pulse heating is exited.

9. The vehicle charging control method according to claim 1, characterized in that: The method further comprises: determining a battery temperature of the battery after pulse heating is completed; In response to the battery temperature of the battery being lower than a third temperature threshold after the pulse heating is completed, a prompt message is output, wherein the prompt message is used to prompt the battery to be heated before charging.

10. A vehicle charging control device, characterized in that: The device comprises: a determining unit, configured to determine, in response to receiving a charging connection signal, whether the battery meets a pulse heating start-up condition based on battery status information; a heating unit, configured to perform pulse heating on the battery in response to determining that the battery meets a pulse heating start-up condition; The control unit is used to control the vehicle to enter the charging mode after the pulse heating is completed.

11. A vehicle, characterized in that: The vehicle is equipped with the vehicle charging control device according to claim 10.

12. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the instructions to implement the vehicle charging control method according to any one of claims 1 to 9.

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