Battery charging preheating control method and system, electronic equipment and medium

Abstract

The invention provides a battery charging preheating control method and system, electronic equipment and a medium, and belongs to the technical field of new energy automobiles. The method comprises the steps that the power battery temperature provided by a power battery management system is obtained; the temperature of the power battery is compared with a preset temperature threshold value, and whether the whole vehicle is in a charging allowing state or not is judged; when the temperature of the power battery is smaller than a preset temperature threshold value and the whole vehicle is in a charging allowing state, a preheating control process is started; and determining to enter a low-power-consumption charging preheating stage or a normal charging preheating stage according to a comparison result of the SOC of the power battery and a preset value. The charging preheating control stage strategy is divided by considering the temperature of the power battery and the SOC of the power battery, the charging preheating control stage strategy is divided into the low-power-consumption charging preheating stage and the normal charging preheating stage, the charging preheating function is further optimized, and the preheating rate during charging is optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a battery charging preheating control method, system, electronic equipment and medium. Background Art

[0002] Since batteries are easily affected by environmental factors during charging, resulting in slow charging and long charging times, preheating the battery is currently a common method to reduce charging time.

[0003] With the increasing popularity of new energy vehicles, the ambient temperature range of vehicle operation is expanding. For example, in northern winter, after a vehicle has been parked for an extended period, the low ambient temperature can cause the vehicle's battery pack to lose power. In this case, when the battery is charged, the battery heating function is activated, and the vehicle consumes power from the charging pile. However, when the charging pile power is lower than the vehicle's power consumption, the battery power is consumed. This can easily cause the battery to continue discharging to the discharge cut-off voltage during the heating period, terminating charging and causing difficulties in vehicle operation. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art and proposes a battery charging preheating control method, system, electronic device and medium.

[0005] In a first aspect, an embodiment of the present invention provides a battery charging preheating control method, comprising:

[0006] Get the power battery temperature provided by the power battery management system;

[0007] Comparing the power battery temperature with a preset temperature threshold and determining whether the vehicle is in a state allowing charging;

[0008] When the temperature of the power battery is lower than a preset temperature threshold and the vehicle is in a state where charging is permitted, a preheating control process is started;

[0009] The comparison result of the power battery SOC with the preset value determines whether to enter the low-power charging preheating stage or the normal charging preheating stage.

[0010] In some embodiments, the starting preheating control process includes:

[0011] Send slow charging instructions to the car charger;

[0012] Activate the battery heating function.

[0013] In some embodiments, determining whether to enter the low-power charging preheating stage or the normal charging preheating stage based on a comparison result of the power battery SOC and a preset value includes:

[0014] Determine whether the power battery SOC is less than the preset value;

[0015] When the power battery SOC is less than the preset value, the system enters a low-power charging and preheating phase;

[0016] When the power battery SOC is greater than or equal to the preset value, the normal charging and preheating phase is entered.

[0017] In some embodiments, entering the low-power charging preheating stage includes:

[0018] Calculate the total power of the thermal management accessories during the low-power charging preheating phase;

[0019] Determine the difference between the on-board charger input power and the power correction value;

[0020] Controlling the total power of the thermal management accessory to be less than or equal to the difference;

[0021] The PTC heater is started to heat the power battery, and the heating power of the PTC heater is adjusted according to the temperature of the power battery to increase the temperature of the power battery.

[0022] In some embodiments, entering the normal charging preheating stage includes:

[0023] Remove power limits from thermal management accessories;

[0024] The real-time temperature of the power battery is obtained, and the heating power of the PTC heater is adjusted according to the real-time temperature.

[0025] In some embodiments, the thermal management accessories include a water pump, a compressor, and a PTC heater.

[0026] In some embodiments, the method further comprises:

[0027] During the battery charging and preheating process, the power battery temperature is monitored in real time;

[0028] When the temperature of the power battery reaches the preset charging temperature, the charging preheating phase ends and the slow charging process begins.

[0029] In a second aspect, an embodiment of the present invention provides a battery charging preheating control system, comprising:

[0030] Temperature acquisition module, used to obtain the power battery temperature provided by the power battery management system;

[0031] A temperature comparison module is used to compare the power battery temperature with a preset temperature threshold and determine whether the vehicle is in a state where charging is allowed;

[0032] A preheating start module is used to start the preheating control process when the temperature of the power battery is lower than a preset temperature threshold and the vehicle is in a state where charging is allowed;

[0033] The preheating control module is used to determine whether to enter the low-power charging preheating stage or the normal charging preheating stage based on the comparison result of the power battery SOC and the preset value.

[0034] In a third aspect, an embodiment of the present invention provides an electronic device, including:

[0035] one or more processors;

[0036] a memory for storing one or more programs;

[0037] When the one or more programs are executed by the one or more processors, the one or more processors implement any of the methods described above.

[0038] In a fourth aspect, an embodiment of the present invention provides a computer-readable medium having a computer program stored thereon, wherein the computer program implements the steps in any of the methods described above when executed by a processor.

[0039] The battery charging preheating control method provided by the present invention includes: obtaining the power battery temperature provided by the power battery management system; comparing the power battery temperature with a preset temperature threshold and determining whether the vehicle is in a state allowing charging; initiating a preheating control process when the power battery temperature is less than the preset temperature threshold and the vehicle is in a state allowing charging; and determining whether to enter a low-power charging preheating phase or a normal charging preheating phase based on the comparison result of the power battery SOC with a preset value. The present invention divides the charging preheating control phase strategy into two phases, a low-power charging preheating phase and a normal charging preheating phase, by considering the power battery temperature and the power battery SOC. This further optimizes the charging preheating function and the preheating rate during charging, thereby resolving the problem of the vehicle consuming more power than the charging pile input power when the charging preheating function is activated in low-temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A flowchart of a battery charging preheating control method provided by an embodiment of the present invention;

[0041] Figure 2 This is a flowchart of an optional specific implementation method of step S4 in an embodiment of the present invention;

[0042] Figure 3 This is a flowchart of an optional specific implementation method of step S42 in an embodiment of the present invention;

[0043] Figure 4A structural block diagram of a battery charging and preheating control system provided by an embodiment of the present invention;

[0044] Figure 5 This is a structural block diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0045] To enable those skilled in the art to better understand the technical solutions of the present invention, exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding. These details should be considered merely exemplary. Therefore, those skilled in the art should recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0046] In the absence of conflict, the various embodiments of the present invention and the various features therein may be combined with each other.

[0047] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0048] The terms used herein are only used to describe specific embodiments and are not intended to limit the present invention. As used herein, the singular forms "a" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. It will also be understood that when the terms "comprising" and / or "made of" are used in this specification, the presence of the features, wholes, steps, operations, elements and / or components is specified, but the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof is not excluded. Similar words such as "connected" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0049] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present invention, and will not be interpreted as having an idealized or overly formal meaning unless expressly defined as such herein.

[0050] The collection, storage, use, processing, transmission, provision, and disclosure of user personal information in the technical solution of this invention complies with relevant laws and regulations and does not violate public order and good morals. The use of user data in this technical solution complies with relevant national laws and regulations (e.g., the "Information Security Technology Personal Information Security Specification"). For example, appropriate measures are implemented to control access to personal information; the display of personal information is subject to prescribed restrictions; the purpose of using personal information does not exceed the scope of direct or reasonable relevance; and when using personal information, explicit identification is eliminated to avoid pinpointing specific individuals.

[0051] In related technologies, preheating of the charging plug is controlled by: determining whether the target vehicle meets the plug preheating conditions based on the vehicle status; if so, actively activating the plug preheating function, receiving an estimate of the plug preheating duration, and determining a wake-up time based on the estimate, so as to wake up the components to be awakened according to the wake-up time; obtaining the current state of the target vehicle to determine whether the target vehicle meets the heating activation conditions based on the current state; if the target vehicle meets the heating activation conditions, controlling the battery management system to heat the target vehicle's battery. The heating activation conditions include receiving a heating permission instruction and a charging permission instruction, and the battery temperature being below a first preset temperature threshold. This technical solution only indicates that the heating power will be adjusted according to the current battery SOC when the charging heating function is activated. It does not address the problem that the slow charging station has a low output power and consumes the battery's own power during the low-temperature charging preheating stage of the entire vehicle. When the battery SOC and temperature are both low, the battery will quickly discharge to the external discharge cutoff voltage, resulting in a failure to charge.

[0052] The battery charging preheating control method designed in the present invention solves the problem that when the charging preheating function is turned on in a low-temperature environment, the power consumption of the entire vehicle is greater than the input power of the charging pile; when the charging heating function is turned on, the heating power is adjusted according to the current battery SOC; the charging preheating function is further optimized. By adjusting the power of the accessories, the power is prioritized at low temperatures and low SOC, and the heating power is increased when the battery temperature or SOC is high. This not only ensures the continuity of the charging function, but also can quickly heat the battery temperature and reduce the charging waiting time.

[0053] In order to solve at least one of the technical problems existing in the above-mentioned related technologies, the present invention provides a battery charging preheating control method. Figure 1 A flowchart of a battery charging preheating control method provided by an embodiment of the present invention.

[0054] As an embodiment of the present invention, Figure 1 As shown, the battery charging preheating control method includes:

[0055] Step S1: Obtaining the power battery temperature provided by the power battery management system;

[0056] Step S2: comparing the power battery temperature with a preset temperature threshold, and determining whether the vehicle is in a state where charging is permitted;

[0057] Step S3: When the power battery temperature is lower than a preset temperature threshold and the vehicle is in a state where charging is permitted, a preheating control process is started;

[0058] Step S4: Determine whether to enter the low-power charging and preheating stage or the normal charging and preheating stage according to the comparison result of the power battery SOC and the preset value.

[0059] It should be noted that the execution subject in this embodiment may be an electronic device, which may be a computer device with data processing capabilities, or other devices that can achieve the same or similar functions. This embodiment does not limit this. In this embodiment, the execution subject is taken as the power domain controller PDCU as an example for explanation.

[0060] Specifically, this embodiment provides a charging preheating control strategy, comprising a power domain controller (PDCU), an onboard charger (OBC), a direct current converter (DCDC), a battery management system (BMS), an air conditioning control system, and related sensors and actuators. The PDCU is the control center of the entire system, responsible for coordinating and managing the electric vehicle's power system. For example, the PDCU receives temperature data and other system status information from the battery management system (BMS), and controls the operation of the OBC, DC converter (DCDC), air conditioning control system, and PTC heater based on this information.

[0061] For example, the onboard charger (OBC) converts external AC power into DC suitable for battery charging. The PDCU controls the start and stop of the OBC and the charging current. During the preheating process, the OBC's input power affects the available power for the heater. The DC / DC converter (DCDC) converts high-voltage DC power into low-voltage DC power to power other electronic devices in the vehicle. The battery management system (BMS) monitors and manages battery status, including voltage, current, temperature, and SOC (State of Charge). For example, the BMS provides the PDCU with battery temperature and SOC data, which are crucial information for preheating control strategies. Sensors and actuators: Sensors monitor vehicle and environmental conditions, such as temperature, pressure, and current. Actuators execute control commands, such as turning the heater on or off. Sensor data is used by the PDCU to make control decisions, and the actuators execute specific actions based on these decisions, such as heating the battery.

[0062] In some embodiments, the power battery temperature provided by the power battery management system is obtained; the power battery temperature is compared with a preset temperature threshold, and it is determined whether the entire vehicle is in a state allowing charging.

[0063] Specifically, the power domain controller (PDCU) determines whether preheating is required based on the battery temperature provided by the BMS. If so, the PDCU controls the OBC to begin charging and activates the PTC heater to preheat the battery. The PDCU dynamically adjusts the charging current and heating power based on the battery's real-time temperature and SOC, as well as the vehicle's energy requirements.

[0064] In some embodiments, when the power battery temperature is less than a preset temperature threshold and the vehicle is in a state where charging is permitted, a preheating control process is initiated. Initiating the preheating control process includes: sending a slow charge instruction to the vehicle charger; and activating a battery heating function.

[0065] For example, when entering the slow charging process, the power domain controller PDCU receives the power battery temperature sent by the power battery management system BMS. When it is determined that the power battery temperature is lower than a certain value (preset temperature threshold) and the entire vehicle is in a charging state, the power domain controller PDCU can control the battery heating while controlling the start of slow charging.

[0066] It is understood that the power domain controller (PDCU) can receive temperature data from the power battery management system (BMS) via the communication network. The BMS monitors key battery parameters such as temperature, voltage, current, and SOC. A preset temperature threshold (preset temperature threshold) can be set based on actual conditions. If the power battery temperature falls below this threshold, it indicates that the battery may be too cold and outside the optimal operating temperature range. In this case, direct charging may affect battery performance or even damage the battery. A vehicle is in a chargeable state, meaning that the electric vehicle is ready for charging and no other system or safety-related restrictions prevent the charging process from commencing. Once the PDCU confirms that the power battery temperature is below the preset temperature threshold and the vehicle is ready for charging, it simultaneously initiates two control actions: initiating a slow charge process, instructing the onboard charger (OBC) to begin charging the battery from an external power source; and activating a battery heating function, such as using a PTC heater, to raise the battery temperature to an appropriate charging temperature. The battery heating system may include a water pump, water valve, PTC, various controllers, and corresponding piping.

[0067] In this embodiment, the purpose of adopting this preheating control strategy is to ensure that the battery begins charging at an appropriate temperature, thereby improving charging efficiency, reducing battery aging, and ensuring that the battery provides optimal performance during the charging process. The preheating process is typically performed before charging begins to ensure that the battery maintains a stable temperature range during charging. The control strategy described in this embodiment is particularly important for electric vehicles used in cold environments.

[0068] As another embodiment of the present invention, Figure 2 As shown, another embodiment of the battery charging preheating control method of the present invention is proposed based on an embodiment, and the step S4 includes:

[0069] Step S41: Determine whether the power battery SOC is less than a preset value;

[0070] Step S42: When the power battery SOC is less than the preset value, entering the low-power charging preheating stage;

[0071] Step S43: When the power battery SOC is greater than or equal to the preset value, the normal charging and preheating phase is entered.

[0072] It should be noted that when the battery heating function is enabled, the PDCU will adjust the PTC heating power according to the current battery temperature. The lower the power battery temperature, the higher the PTC heating power. At this time, the power consumption of the entire vehicle mainly comes from the input power of the charging pile. When the input power of the charging pile is insufficient to support the power consumption of the entire vehicle, the power of the power battery will be consumed.

[0073] Specifically, the PDCU determines that battery preheating is necessary and activates the battery heating function. The PDCU adjusts the PTC heater power based on the current battery temperature. The PDCU monitors the battery temperature in real time and adjusts the power output of the PTC heater based on the temperature level. A PTC heater is a heating element that can adjust its power output based on its own temperature. If the battery temperature is low, more heat is required to heat it to a suitable operating temperature, so the PDCU increases the PTC heater power output. Conversely, if the battery temperature is high, the PTC heater power is reduced to prevent overheating. During the preheating phase, the vehicle's energy consumption primarily comes from the power provided by the external charging station. This power is used for battery heating and possibly other vehicle functions (such as air conditioning). If the power provided by the external charging station is insufficient to meet the vehicle's energy needs (for example, when both battery heating and air conditioning are running simultaneously), the power stored in the power battery must be used to make up the difference. This means that the battery's state of charge (SOC) may decrease during the preheating process because some of the battery's energy is used for heating rather than charging.

[0074] In this embodiment, charging preheating is divided into two stages: a low-power charging preheating stage and a normal charging preheating stage. When the battery SOC is low, the low-power charging preheating stage begins, and the normal charging preheating stage begins after the battery SOC reaches a certain value. During the preheating stage, the method described in this embodiment balances the input power from the charging pile with the energy demand of the entire vehicle to ensure that the battery reaches a suitable operating temperature during the preheating process without excessively consuming the battery's electrical energy. In this way, charging efficiency and battery life can be optimized.

[0075] As another embodiment of the present invention, Figure 3 As shown, another embodiment of the battery charging preheating control method of the present invention is proposed based on one embodiment, and the step S42 includes:

[0076] Step S421: When the power battery SOC is less than the preset value, calculating the total power of the thermal management accessory;

[0077] Step S422: determining the difference between the vehicle charger input power and the power correction value;

[0078] Step S423: controlling the total power of the thermal management accessory to be less than or equal to the difference;

[0079] Step S424: starting the PTC heater to heat the power battery, and adjusting the heating power of the PTC heater according to the temperature of the power battery to increase the temperature of the power battery.

[0080] In some embodiments, entering the normal charging preheating stage includes: releasing the power limit of the thermal management accessory; obtaining the real-time temperature of the power battery, and adjusting the heating power of the PTC heater according to the real-time temperature.

[0081] Specifically, thermal management accessories include a water pump, a compressor, and a PTC heater. In this embodiment, charging preheating is divided into two phases: a low-power charging preheating phase and a normal charging preheating phase. When the battery SOC is low (less than a preset value), the low-power charging preheating phase begins. During this phase, the power of thermal management accessories, such as the water pump, compressor, and PTC, is calculated. The sum of the power of each thermal management accessory (the total power of each thermal management accessory) is limited to less than or equal to (OBC input power minus power correction value). Because the power battery's initial temperature is very low, a higher heating power is required to heat the battery. Heating takes priority at this stage to ensure the battery's temperature rises. Once the battery SOC reaches a certain value (preset value), the normal charging preheating phase begins. At this point, the thermal management accessory power limit is lifted, and heating power is controlled based on the power battery's temperature.

[0082] For example, the charging preheating process is divided into two distinct phases: a low-power charging preheating phase and a normal charging preheating phase to accommodate different charging requirements and battery conditions. When the battery SOC is low, indicating low energy storage, the low-power charging preheating phase begins, during which preheating should minimize energy consumption. During this phase, the power requirements of various accessories in the vehicle's thermal management system (such as the water pump, compressor, and PTC heater) are first calculated. The total power of the thermal management system accessories is limited to the on-board charger (OBC) input power minus a power correction value. This correction value accounts for the energy requirements of other vehicle systems to ensure overall energy balance. If the initial battery temperature is very low, the PTC heater power is set to a higher value to quickly heat the battery to a suitable operating temperature. During this phase, battery heating is prioritized. When the battery SOC reaches a preset value, indicating that the battery has a sufficient amount of energy storage, the normal preheating phase can begin. During this phase, the power restrictions on the thermal management system accessories are lifted, allowing heating power to be adjusted based on the battery's real-time temperature. This allows for appropriate heating based on the battery's actual needs, avoiding overheating or underheating.

[0083] This staged preheating control strategy is designed to optimize charging efficiency and battery life, while ensuring that the vehicle's energy needs are met throughout the charging process. By dynamically adjusting the preheating strategy to adapt to different environments and battery conditions, a more efficient and safer charging process is achieved.

[0084] In some embodiments, the method further includes: during the battery charging and preheating process, monitoring the power battery temperature in real time; when the power battery temperature reaches a preset charging temperature, ending the charging and preheating phase and entering a slow charging process.

[0085] Specifically, after the battery SOC reaches a certain value, it enters the normal charging preheating stage. At this time, the power limit of the thermal management accessory is released and the heating power is controlled according to the power battery temperature.

[0086] In this embodiment, this solution can optimize the preheating rate during charging, adjust the power consumption of the thermal management accessories at different stages of charging and preheating, and in the low-power charging and preheating stage, limit the power of the thermal management accessories to make the OBC input power greater than the power consumption of the entire vehicle, thereby preventing the battery from discharging to the external discharge cut-off voltage when the battery power is low, resulting in the inability to charge. When the battery power is high, the heating power is increased to reduce the battery heating time.

[0087] The battery charging preheating control method provided in this embodiment solves the problem of vehicle power consumption exceeding the charging pile input power when the charging preheating function is activated in low-temperature environments. When the charging heating function is activated, the heating power is adjusted according to the current battery SOC. This embodiment further optimizes the charging preheating function by adjusting the power of the thermal management system accessories, prioritizing battery capacity at low temperatures and low SOC, and increasing heating power at high battery temperatures or SOC. This ensures the continuity of the charging function while quickly heating the battery and reducing charging wait time. This strategy ensures that the battery is charged in optimal conditions, thereby extending battery life, improving charging efficiency, and improving vehicle performance.

[0088] Reference Figure 4 , Figure 4 This is a structural block diagram of an embodiment of the battery charging preheating control system of the present invention. Figure 4 As shown, the battery charging preheating control system includes:

[0089] The temperature acquisition module 10 is used to obtain the power battery temperature provided by the power battery management system;

[0090] The temperature comparison module 20 is used to compare the power battery temperature with a preset temperature threshold and determine whether the vehicle is in a state where charging is allowed;

[0091] A preheating start module 30 is configured to start a preheating control process when the power battery temperature is lower than a preset temperature threshold and the vehicle is in a state where charging is permitted;

[0092] The preheating control module 40 is used to determine whether to enter the low-power charging preheating stage or the normal charging preheating stage according to the comparison result of the power battery SOC and the preset value.

[0093] Specifically, the battery charging and preheating control system includes a temperature acquisition module 10, a temperature comparison module 20, a preheating initiation module 30, and a preheating control module 40. The temperature acquisition module 10 may include a battery management system (BMS) status detection submodule for obtaining the power battery temperature provided by the BMS. The battery charging and preheating control system employs a charging and preheating control strategy that comprehensively considers battery temperature and SOC, including monitoring the operating status of various thermal management control components and reading information from various sensors.

[0094] Exemplarily, the preheating control module 40 may include a thermal management accessory power calculation submodule, a vehicle power consumption calculation submodule, and a thermal management control submodule. In this embodiment, the charging preheating control strategy is divided into two phases, a low-power charging preheating phase and a normal charging preheating phase, based on battery temperature and SOC. The thermal management accessory power calculation submodule, the vehicle power consumption calculation submodule, and the thermal management control submodule enable the system to enter the low-power charging preheating phase when the battery SOC is low (less than a preset value). During this phase, the power of thermal management accessories, such as the water pump, compressor, and PTC, is calculated, and the sum of the power of each thermal management accessory (the total power of each thermal management accessory) is limited to less than or equal to (OBC input power minus power correction value). Because the power battery's initial temperature is very low, a higher heating power is required to heat the battery. During this phase, heating takes priority to ensure the battery's temperature rises. Once the battery SOC reaches a certain value (preset value), the system enters the normal charging preheating phase, at which point the thermal management accessory power limit is lifted and heating power is controlled based on the power battery temperature.

[0095] The battery charging preheating control system provided in this embodiment divides the charging preheating control stage strategy into two stages: a low-power charging preheating stage and a normal charging preheating stage by considering the power battery temperature and the power battery SOC. This further optimizes the charging preheating function and the preheating rate during charging, thereby solving the problem of the vehicle power consumption exceeding the charging pile input power when the charging preheating function is turned on in a low-temperature environment.

[0096] In addition, for technical details not fully described in the embodiment of the battery charging and preheating control system, reference can be made to the battery charging and preheating control method provided in any embodiment of the present invention, and will not be repeated here.

[0097] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device. Figure 5 This is a structural block diagram of an electronic device provided by an embodiment of the present invention. Figure 5 As shown, an embodiment of the present invention provides an electronic device including: one or more processors 101, a memory 102, and one or more I / O interfaces 103. The memory 102 stores one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement any of the battery charging preheating control methods described in the above embodiments. The one or more I / O interfaces 103 are connected between the processor and the memory and are configured to implement information exchange between the processor and the memory.

[0098] Among them, the processor 101 is a device with data processing capabilities, including but not limited to a central processing unit (CPU); the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically such as SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read-write interface) 103 is connected between the processor 101 and the memory 102, and can realize information interaction between the processor 101 and the memory 102, including but not limited to a data bus (Bus), etc.

[0099] In some embodiments, the processor 101 , the memory 102 , and the I / O interface 103 are connected to each other via a bus 104 , and further connected to other components of the computing device.

[0100] In some embodiments, the one or more processors 101 include a field programmable gate array.

[0101] An embodiment of the present invention further provides a computer-readable medium. The computer-readable medium stores a computer program, wherein, when executed by a processor, the program implements the steps of any of the battery charging preheating control methods described in the above embodiments. The computer-readable storage medium can be volatile or non-volatile.

[0102] An embodiment of the present invention also provides a computer program product, including computer-readable code, or a non-volatile computer-readable storage medium carrying computer-readable code. When the computer-readable code runs in a processor of an electronic device, the processor in the electronic device executes the above-mentioned battery charging preheating control method.

[0103] Those skilled in the art will appreciate that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, or appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable storage medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transient medium).

[0104] As is known to those skilled in the art, the term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information, such as computer-readable program instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), flash memory or other memory technology, portable compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and that can be accessed by a computer. Furthermore, as is known to those skilled in the art, communication media typically embodies computer-readable program instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0105] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions to be stored in the computer-readable storage medium in each computing / processing device.

[0106] The computer program instructions for performing the operations of the present invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state-setting data, or source or object code written in any combination of one or more programming languages, including object-oriented programming languages such as Smalltalk, C++, and conventional procedural programming languages such as "C" or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, the state information of the computer-readable program instructions is used to personalize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), so that the electronic circuit can execute the computer-readable program instructions, thereby implementing various aspects of the present invention.

[0107] The computer program product described herein may be implemented in hardware, software, or a combination thereof. In one embodiment, the computer program product is implemented as a computer storage medium. In another embodiment, the computer program product is implemented as a software product, such as a software development kit (SDK).

[0108] Various aspects of the present invention are described herein with reference to flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present invention. It should be understood that each block of the flowcharts and / or block diagrams, and combinations of blocks in the flowcharts and / or block diagrams, can be implemented by computer-readable program instructions.

[0109] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, so that when these instructions are executed by the processor of the computer or other programmable data processing device, a device is generated that implements the functions / actions specified in one or more blocks in the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium, where these instructions cause the computer, programmable data processing device, and / or other device to operate in a specific manner. Thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing various aspects of the functions / actions specified in one or more blocks in the flowchart and / or block diagram.

[0110] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operational steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more blocks in the flowchart and / or block diagram.

[0111] The flow charts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a part of a module, program segment or instruction, and the part of the module, program segment or instruction includes one or more executable instructions for realizing the logical function of the specification. In some alternative implementations, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the function or action of the specification, or can be implemented with a combination of dedicated hardware and computer instructions.

[0112] Example embodiments have been disclosed herein, and although specific terms are employed, they are used and should be interpreted only in a general illustrative sense and not for purposes of limitation. In some instances, it will be apparent to those skilled in the art that, unless otherwise expressly indicated, features, characteristics, and / or elements described in conjunction with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments. Therefore, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the scope of the invention as set forth in the appended claims.

Claims

1. A battery charging preheating control method, characterized in that: include: Get the power battery temperature provided by the power battery management system; Comparing the power battery temperature with a preset temperature threshold and determining whether the vehicle is in a state allowing charging; When the temperature of the power battery is lower than a preset temperature threshold and the vehicle is in a state where charging is permitted, a preheating control process is started; The comparison result of the power battery SOC with the preset value determines whether to enter the low-power charging preheating stage or the normal charging preheating stage.

2. The method according to claim 1, characterized in that The start-up preheating control process includes: Send slow charging instructions to the car charger; Activate the battery heating function.

3. The method according to claim 1, characterized in that The step of determining whether to enter the low-power charging and preheating stage or the normal charging and preheating stage according to the comparison result of the power battery SOC and the preset value includes: Determine whether the power battery SOC is less than the preset value; When the power battery SOC is less than the preset value, the system enters a low-power charging and preheating phase; When the power battery SOC is greater than or equal to the preset value, the normal charging and preheating phase is entered.

4. The method according to claim 3, characterized in that The step of entering the low-power charging preheating stage includes: Calculate the total power of the thermal management accessories during the low-power charging preheating phase; Determine the difference between the on-board charger input power and the power correction value; Controlling the total power of the thermal management accessory to be less than or equal to the difference; The PTC heater is started to heat the power battery, and the heating power of the PTC heater is adjusted according to the temperature of the power battery to increase the temperature of the power battery.

5. The method according to claim 3, characterized in that The normal charging preheating stage includes: Remove power limits from thermal management accessories; The real-time temperature of the power battery is obtained, and the heating power of the PTC heater is adjusted according to the real-time temperature.

6. The method according to claim 4 or 5, characterized in that The thermal management accessories include a water pump, a compressor and a PTC heater.

7. The method according to claim 1, characterized in that The method further comprises: During the battery charging and preheating process, the power battery temperature is monitored in real time; When the temperature of the power battery reaches the preset charging temperature, the charging preheating phase ends and the slow charging process begins.

8. A battery charging preheating control system, characterized in that: include: Temperature acquisition module, used to obtain the power battery temperature provided by the power battery management system; A temperature comparison module is used to compare the power battery temperature with a preset temperature threshold and determine whether the vehicle is in a state where charging is allowed; A preheating start module is used to start the preheating control process when the temperature of the power battery is lower than a preset temperature threshold and the vehicle is in a state where charging is allowed; The preheating control module is used to determine whether to enter the low-power charging preheating stage or the normal charging preheating stage based on the comparison result of the power battery SOC and the preset value.

9. An electronic device, characterized in that: include: one or more processors; a memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 7.

10. A computer-readable medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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