Charging control methods, devices, batteries, vehicles and software products

Abstract

This disclosure relates to a charging control method, device, battery, vehicle, and software product, belonging to the field of battery charging technology. The method includes: determining a target temperature for the battery based on the actual maximum output power of the charging pile; determining the actual heat generation power of the battery when the actual temperature is greater than or equal to the target temperature, wherein the actual heat generation power is the average heat generation power of the battery within the most recent target time period; determining target cooling parameters based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator; and controlling the cooling actuator to cool the battery according to the target cooling parameters. By using the actual maximum output power of the charging pile, a more reasonable target temperature for battery cooling can be obtained based on the charging capacity of the charging pile, and by combining this with the actual heat generation power of the battery, a more accurate target cooling parameter can be obtained, thereby improving the charging speed and reducing charging energy consumption while achieving the purpose of cooling the battery.

Description

Technical Field

[0001] This disclosure relates to the field of battery charging technology, and in particular to a charging control method, device, battery, vehicle, and program product. Background Technology

[0002] With the increasing popularity of electric vehicles, the safe and efficient use of batteries has gradually attracted attention. Battery thermal issues are key factors determining their performance, safety, lifespan, and operating costs. Excessive battery temperature can easily lead to safety problems such as overheating, combustion, and explosion, and also poses significant challenges to the vehicle's power and energy consumption. Prolonged exposure to high temperatures can also cause battery lifespan to decline. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a charging control method, device, battery, vehicle, and program product, so as to obtain a more reasonable target temperature for battery cooling based on the charging capacity of the charging pile, and obtain more accurate target cooling parameters by combining the actual heat generation power of the battery, so as to achieve the global optimization of charging speed and charging energy consumption while achieving the purpose of cooling the battery.

[0004] According to a first aspect of the present disclosure, a charging control method is provided, comprising: Determine the target temperature of the battery based on the actual maximum output power of the charging station; If the actual temperature of the battery is greater than or equal to the target temperature, the actual heat generation power of the battery is determined, and the actual heat generation power is the average heat generation power of the battery in the most recent target time period; The target cooling parameters are determined based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator. The cooling actuator is controlled to cool the battery according to the target cooling parameters.

[0005] Optionally, determining the target temperature of the battery based on the actual maximum output power of the charging pile includes: The target charging power is determined based on the maximum output power of the charging pile and the charging power threshold of the battery, wherein the charging power threshold is the maximum charging power of the battery at different temperatures; Based on the correlation between charging power and battery temperature, the target temperature corresponding to the target charging power is determined.

[0006] Optionally, determining the target charging power based on the maximum output power of the charging pile and the charging power threshold of the battery includes: The smaller of the maximum output power of the charging pile and the charging power threshold of the battery is determined as the target charging power.

[0007] Optionally, determining the actual heat generation power of the battery includes: Obtain the target operating parameters of the battery within the most recent target time period, the target operating parameters including current, open circuit voltage and terminal voltage; Based on the target operating parameters, the average heat generation power of the battery within the most recent target duration is determined to obtain the actual heat generation power.

[0008] Optionally, the cooling actuator is a heat exchange system, the actual cooling parameters include the actual coolant temperature and the actual coolant flow rate, and the target cooling parameters include the target coolant temperature and the target coolant flow rate; The step of determining the target cooling parameters based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator includes: The target coolant temperature is determined based on the actual heat output, the target temperature, and the actual coolant temperature. The target coolant flow rate is determined based on the actual heat generation power and the actual coolant flow rate.

[0009] Optionally, the method further includes: If the actual temperature of the battery is lower than the target temperature, the cooling actuator is controlled to stop cooling the battery.

[0010] Optionally, the method further includes: If the actual temperature of the battery is lower than the target temperature, the maximum allowable charging power of the battery is determined based on the actual temperature of the battery. If the actual maximum output power is greater than the maximum allowable charging power, the heating request power is determined based on the actual maximum output power and the maximum allowable charging power. Determine the target heating parameters based on the requested heating power; The heating actuator is controlled to heat the battery according to the target heating parameters.

[0011] Optionally, before determining the target temperature of the battery based on the actual maximum output power of the charging pile, the method further includes: The actual maximum output power of the charging pile is determined based on the actual output power of the charging pile and the maximum allowable output power of the charging pile.

[0012] According to a second aspect of the present disclosure, a charging control device is provided, comprising: The first determining module is configured to determine the target temperature of the battery based on the actual maximum output power of the charging pile; The second determining module is configured to determine the actual heat generation power of the battery when the actual temperature of the battery is greater than or equal to the target temperature, wherein the actual heat generation power is the average heat generation power of the battery in the most recent target time period; The third determining module is configured to determine the target cooling parameters based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator; The first control module is configured to control the cooling actuator to cool the battery according to the target cooling parameters.

[0013] According to a third aspect of the present disclosure, a battery is provided, including a battery management system configured to perform the steps of the charging control method provided in the first aspect of the present disclosure when executed.

[0014] According to a fourth aspect of the present disclosure, a vehicle is provided, comprising: processor; Memory used to store processor-executable instructions; The processor is configured to execute the steps of the charging control method provided in the first aspect of this disclosure.

[0015] According to a fifth aspect of the present disclosure, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the charging control method provided in the first aspect of the present disclosure.

[0016] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: Based on the actual maximum output power of the charging pile, the target temperature of the battery is determined. If the actual temperature of the battery is greater than or equal to the target temperature, the actual heat generation power of the battery is determined. This actual heat generation power is the average heat generation power of the battery within the most recent target time period. Then, based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator, the target cooling parameters are determined, and the cooling actuator is controlled to cool the battery according to the target cooling parameters.

[0017] By using the actual maximum output power of the charging pile, a more reasonable target temperature for battery cooling can be obtained based on the charging capacity of the charging pile. Combined with the actual heat generation power of the battery, more accurate target cooling parameters can be obtained. This achieves the global optimization of charging speed and charging energy consumption while cooling the battery, thereby improving charging speed and reducing charging energy consumption.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0020] Figure 1 This is a schematic diagram illustrating an application scenario of a charging control method according to an exemplary embodiment.

[0021] Figure 2 This is a flowchart illustrating a charging control method according to an exemplary embodiment.

[0022] Figure 3 This is a flowchart illustrating a method for determining a target temperature according to an exemplary embodiment.

[0023] Figure 4 This is a block diagram illustrating a charging control device according to an exemplary embodiment.

[0024] Figure 5 This is a block diagram illustrating a vehicle according to an exemplary embodiment. Detailed Implementation

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description relating to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements.

[0026] The embodiments described in the following examples of this disclosure are not representative of all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0027] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0028] With the increasing popularity of electric vehicles, the safe and efficient use of batteries has gradually attracted attention. Battery thermal issues are key factors determining their performance, safety, lifespan, and operating costs. Excessive battery temperature can easily lead to safety problems such as overheating, combustion, and explosion, and also poses significant challenges to the vehicle's power and energy consumption. Prolonged exposure to high temperatures can also cause battery lifespan to decline.

[0029] To ensure batteries remain below a reasonable temperature, manufacturers design battery cooling systems. Common cooling methods include air cooling, water cooling, and direct cooling, with water cooling being the most widely used. When the BMS (Battery Management System) determines that the battery temperature exceeds a certain temperature threshold, it sends a cooling request. When the BMS determines that the battery temperature is below a certain temperature threshold, it stops sending cooling requests. However, the temperature threshold relies on offline calibration, making it impossible to obtain a more reasonable temperature value. Consequently, it is impossible to obtain more reasonable control parameters, affecting charging speed and resulting in higher charging energy consumption.

[0030] To address the aforementioned technical problems, this disclosure provides a charging control method, device, battery, vehicle, and software product. By utilizing the actual maximum output power of the charging pile, a more reasonable target temperature for battery cooling can be obtained based on the charging capacity of the charging pile. Furthermore, by combining the actual heat generation power of the battery, more accurate target cooling parameters can be obtained. This achieves global optimization of charging speed and charging energy consumption while cooling the battery, thereby improving charging speed and reducing charging energy consumption.

[0031] Figure 1 This is a schematic diagram illustrating an application scenario of a charging control method according to an exemplary embodiment, such as... Figure 1 As shown, the charging pile 101 controls the charging gun 103 to output electrical energy to the vehicle 104 via the charging controller 102 to charge the vehicle 104, or outputs it to the heat exchange system 106 to heat the battery, etc. The battery may include a battery management system 105 to control the charging of the battery.

[0032] Figure 2 This is a flowchart illustrating a charging control method according to an exemplary embodiment, such as... Figure 2 As shown, this method can be used in vehicles and may include the following steps.

[0033] In step S201, the target temperature of the battery is determined based on the actual maximum output power of the charging pile.

[0034] In this embodiment, by obtaining a more accurate actual maximum output power of the charging pile, a more accurate target temperature of the battery can be obtained based on the accurate actual maximum output power of the charging pile. This target temperature is the temperature at which the battery's charging power is maximized.

[0035] In step S202, if the actual temperature of the battery is greater than or equal to the target temperature, the actual heat generation power of the battery is determined. This actual heat generation power is the average heat generation power of the battery within the most recent target time period.

[0036] In this embodiment, if the actual battery temperature is greater than or equal to the target temperature, it is determined that the battery needs to be cooled to reduce its temperature to the target temperature. If the cooling actuator is in the off state, it can be controlled to turn on to cool the battery. If the cooling actuator is in the on state, it can be controlled to remain on until the battery temperature reaches the target temperature. During the battery cooling process, it is necessary to determine the control parameters corresponding to the cooling actuator. To improve the accuracy of the control parameters, the heat generation of the battery can be taken into account. The actual heat generation power of the battery can be obtained based on the average heat generation power of the battery within the most recent target time period, so as to determine more accurate control parameters.

[0037] In step S203, the target cooling parameters are determined based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator.

[0038] In this embodiment, the actual cooling parameters of the cooling actuator are used as a reference, the target temperature is used as the control target, and the actual heat generation power of the battery is combined to obtain more accurate control parameters for the cooling actuator, namely the target cooling parameters.

[0039] In step S204, the cooling actuator is controlled to cool the battery according to the target cooling parameters.

[0040] In this embodiment, the cooling actuator can be controlled by the target cooling parameters to cool the battery so that the battery temperature is reduced to the target temperature. This achieves the global optimization of charging speed and charging energy consumption while cooling the battery, thereby improving the charging speed and reducing the charging energy consumption.

[0041] Figure 3 This is a flowchart illustrating a method for determining a target temperature according to an exemplary embodiment, such as... Figure 3 As shown, in one possible implementation, determining the target temperature of the battery based on the actual maximum output power of the charging station includes: In step S301, the target charging power is determined based on the maximum output power of the charging pile and the charging power threshold of the battery. The charging power threshold is the maximum charging power of the battery at different temperatures.

[0042] In step S302, the target temperature corresponding to the target charging power is determined based on the correspondence between charging power and battery temperature.

[0043] In this embodiment, the battery's maximum charging power varies with battery temperature. The maximum charging power of the battery at different temperatures can be determined; that is, the maximum charging power the battery can achieve by adjusting its temperature is obtained, thus providing a battery charging power threshold. The maximum output power of the charging station is then compared with the battery's charging power threshold to determine the target charging power based on the comparison result.

[0044] In one possible implementation, if the maximum output power of the charging pile is greater than or equal to the battery's charging power threshold, then regardless of how the battery temperature is adjusted, the battery's maximum charging power can only reach the charging power threshold. If the maximum output power of the charging pile is less than the battery's charging power threshold, then the battery's maximum charging power can only reach the charging pile's maximum output power. That is, the smaller of the charging pile's maximum output power and the battery's charging power threshold is determined as the target charging power.

[0045] Different charging powers correspond to different battery temperatures. After obtaining the target charging power, the corresponding target temperature can be found based on the relationship between the target charging power and the battery temperature, thus determining the target temperature that the battery needs to cool down. By using a more accurate estimate of the actual maximum output power of the charging station, a more precise cooling target can be obtained, ensuring that the battery temperature is always maintained at a more suitable charging temperature and improving the charging speed.

[0046] In one possible implementation, before determining the target temperature of the battery based on the actual maximum output power of the charging station, the method further includes: The actual maximum output power of the charging pile is determined based on its actual output power and its maximum allowable output power.

[0047] In this embodiment, the actual output power of the charging pile is the power that the charging pile outputs to the vehicle in real time, which can be calculated based on the output current and output voltage of the charging pile. The requested power of the battery is the power demanded by the battery to the charging pile in real time. The maximum allowable output power of the charging pile is the rated maximum output power of the charging pile, which can be determined based on the maximum allowable output current and maximum allowable output voltage of the charging pile; that is, the maximum allowable output power of the charging pile can be the product of the maximum allowable output current and maximum allowable output voltage of the charging pile. The actual maximum output power of the charging pile can be determined based on the actual output power of the charging pile, as well as the magnitude and stability of the maximum allowable output power of the charging pile. Therefore, the true maximum output power of the charging pile can be accurately estimated in real time, without relying on the maximum allowable output current and maximum allowable output voltage sent by the charging pile, resulting in a more accurate actual maximum output power of the charging pile.

[0048] In one possible implementation, the method for determining the actual maximum output power of the charging pile based on its actual output power and its maximum permissible output power may include: If the actual output power of the charging pile is less than the requested power of the battery and remains stable, obtain the real-time output power of the charging pile. The minimum of the real-time output power and the maximum allowable output power of the charging pile is determined as the actual maximum output power of the charging pile.

[0049] In this embodiment, after the vehicle sends a power request from the battery to the charging station, the charging station can output power to the vehicle based on its current output power, with the requested power as the output target. During this process, if the actual output power of the charging station is less than the requested power of the battery and remains stable, it indicates that the charging station has reached its output power limit and cannot further increase its output power to reach the requested power. At this time, the real-time output power of the charging station when it is stable can be obtained, and then compared with the maximum allowable output power of the charging station. The minimum value between the real-time output power and the maximum allowable output power of the charging station is determined as the actual maximum output power of the charging station.

[0050] In one possible implementation, determining the actual maximum output power of the charging pile based on its actual output power and its maximum permissible output power includes: When the actual output power of the charging pile is less than the requested power of the battery and continues to change, the maximum allowable output power of the charging pile is determined as the actual maximum output power of the charging pile.

[0051] In this embodiment, when the actual output power of the charging pile is less than the requested power of the battery and continues to change, and the requested power of the battery is greater than the actual output power of the charging pile, the charging pile can continuously increase its output power to meet the battery's requested power. If the actual output power of the charging pile continues to change, the output power of the charging pile is still increasing, and the charging pile has not yet reached its power output limit. In this case, the maximum output power of the charging pile cannot be determined based on its actual output power; instead, the maximum allowable output power of the charging pile can be determined as its actual maximum output power.

[0052] In one possible implementation, the method for determining the actual maximum output power of the charging pile based on its actual output power and its maximum allowable output power can be as follows: If the actual output power of the charging pile is greater than or equal to the requested power of the battery, the maximum allowable output power of the charging pile shall be determined as the actual maximum output power of the charging pile.

[0053] In this embodiment, if the actual output power of the charging pile is greater than or equal to the requested power of the battery, it indicates that the charging pile can meet the battery's requested power. However, it cannot be determined that the current output power of the charging pile is its output limit, and the maximum output power of the charging pile cannot be determined based on its actual output power. The maximum allowable output power of the charging pile can be determined as its actual maximum output power.

[0054] In one possible implementation, determining the actual heat generation power of the battery includes: Obtain the target operating parameters of the battery within the most recent target duration, including current, open-circuit voltage, and terminal voltage; based on the target operating parameters, determine the average heat generation power of the battery within the most recent target duration to obtain the actual heat generation power.

[0055] In this embodiment, the target duration can be determined according to the actual situation, such as 1 minute. The target operating parameters of the battery within the most recent target duration can be obtained, that is, the target operating parameters within the time period from 1 minute away from the current time to the current time. Specifically, the target operating parameters may include the battery current, open circuit voltage and terminal voltage.

[0056] The formula for calculating actual heat production power can be:

[0057] in, For actual heat production capacity, For time, For the target duration, For the battery current, This is the open-circuit voltage of the battery. This is the battery's terminal voltage. The entropy coefficient is the heat coefficient, which can be obtained experimentally.

[0058] In one possible implementation, the method for determining the average heat generation power of the battery over the most recent target time period based on target operating parameters to obtain the actual heat generation power can be as follows: The target operating parameters of the acquired battery within the most recent target duration are uniformly sampled at time intervals to obtain target operating parameters corresponding to multiple time points. For example, sampling once per second yields target operating parameters corresponding to 60 time points. Each time point corresponds to a set of battery current, open-circuit voltage, and terminal voltage.

[0059] Then, the heat generation power at each time point is calculated and summed to obtain the total heat generation power corresponding to multiple time points. Next, based on the total heat generation power and the number of time points, the total heat generation power is divided by the number of time points to obtain the average heat generation power of the battery within the most recent target time period, thus obtaining the actual heat generation power.

[0060] In one possible implementation, the cooling actuator is a heat exchange system, and the actual cooling parameters include the actual coolant temperature and the actual coolant flow rate, while the target cooling parameters include the target coolant temperature and the target coolant flow rate.

[0061] Based on the actual heat output, target temperature, and actual cooling parameters of the cooling actuator, determine the target cooling parameters, including: The target coolant temperature is determined based on the actual heat output, target temperature, and actual coolant temperature; the target coolant flow rate is determined based on the actual heat output and actual coolant flow rate.

[0062] In this embodiment, the cooling actuator can be a heat exchange system, which can be a water-cooling system capable of cooling or heating. Actual cooling parameters may include actual coolant temperature and actual coolant flow rate, while target cooling parameters may include target coolant temperature and target coolant flow rate, so as to accurately control the cooling of the battery using coolant temperature and flow rate.

[0063] Specifically, the target coolant temperature can be determined based on the actual heat output, the target temperature, and the mapping relationship between the actual coolant temperature and the target coolant temperature.

[0064] The formula for calculating the target coolant temperature is as follows:

[0065] in, The target coolant temperature, For actual heat production capacity, For the target temperature, This is the actual coolant temperature. This represents the mapping relationship between actual heat output, target temperature, and actual coolant temperature and target coolant temperature.

[0066] Specifically, the target coolant flow rate can be determined based on the mapping relationship between the actual heat output, the actual coolant flow rate, and the target coolant flow rate.

[0067] The formula for calculating the target coolant flow rate can be:

[0068] in, For the target coolant flow rate, For actual heat production capacity, This represents the actual coolant flow rate. This represents the mapping relationship between actual heat output, actual coolant flow rate, and target coolant flow rate.

[0069] In one possible implementation, if the actual temperature of the battery is lower than the target temperature, the cooling actuator is controlled to stop cooling the battery.

[0070] In this embodiment, within this control cycle, after determining the target temperature of the battery, if the actual temperature of the battery is lower than the target temperature, the cooling actuator can be controlled to stop cooling the battery. Alternatively, after controlling the cooling actuator to cool the battery according to the target cooling parameters, if the actual temperature of the battery is lower than the target temperature, cooling of the battery can be stopped, and the cooling actuator can be controlled to stop cooling the battery.

[0071] In one possible implementation, if the actual temperature of the battery is lower than the target temperature, a heating actuator can be controlled to heat the battery to reach the target temperature. Specifically, this can be achieved by: If the actual battery temperature is lower than the target temperature, determine the maximum allowable charging power of the battery based on the actual battery temperature; if the actual maximum output power is greater than the maximum allowable charging power, determine the heating request power based on the actual maximum output power and the maximum allowable charging power; determine the target heating parameters based on the heating request power; and control the heating actuator to heat the battery based on the target heating parameters.

[0072] In this embodiment, the maximum allowable charging power of the battery can be determined based on its actual temperature and state of charge (SBC). Specifically, the actual temperature and SBC of the battery can be acquired in real time, and the maximum allowable charging power corresponding to the battery can be obtained based on these parameters. The battery corresponds to different maximum allowable charging powers under different temperatures and SBCs. The maximum allowable charging power at the current actual temperature and SBC can be determined based on a pre-established correspondence between temperature, SBC, and the battery's maximum allowable charging power. This correspondence between temperature, SBC, and the battery's maximum allowable charging power can be obtained through experiments or modeling simulations.

[0073] Then, based on the actual maximum output power and the battery's maximum allowable charging power, a heating control strategy for the battery is determined. This allows for a more reasonable heating control strategy based on actual conditions, achieving global optimization of the on / off decision for charging heating, and thus global optimization of the charging speed, thereby improving the charging rate.

[0074] The heating request power can be determined based on the actual maximum output power and the maximum allowed charging power. This heating request power can be the remaining power of the charging pile under the condition that the maximum allowed charging power is met; that is, the heating request power can be determined by the difference between the actual maximum output power and the maximum allowed charging power.

[0075] If the actual maximum output power exceeds the maximum allowable charging power, and the heating request power is greater than 0, it indicates that the charging pile currently has surplus power. Battery heating can then be activated to increase the battery's maximum allowable charging power. Based on the magnitude of the heating request power, target heating parameters are determined. The heating actuator is then controlled to heat the battery according to these target heating parameters, thereby improving the battery's charging efficiency. The heating actuator can be a heat exchange system.

[0076] If the requested heating power is less than or equal to 0, it means that the charging pile does not have any spare power. Turning on the battery heating will not increase the maximum allowable charging power of the battery and will cause some power to be used for heating, resulting in a loss of charging power for the battery pack. In this case, the battery heating can be turned off so that all the power of the charging pile can be used for charging the battery pack, thereby improving the charging speed of the battery.

[0077] Figure 4 This is a block diagram illustrating a charging control device according to an exemplary embodiment. (Refer to...) Figure 4 The charging control device 400 includes a first determining module 401, a second determining module 402, a third determining module 403, and a first control module 404.

[0078] The first determining module 401 is configured to determine the target temperature of the battery based on the actual maximum output power of the charging pile; The second determining module 402 is configured to determine the actual heat generation power of the battery when the actual temperature of the battery is greater than or equal to the target temperature, wherein the actual heat generation power is the average heat generation power of the battery in the most recent target time period; The third determining module 403 is configured to determine the target cooling parameters based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator; The first control module 404 is configured to control the cooling actuator to cool the battery according to the target cooling parameters.

[0079] Optionally, the first determining module 401 includes: The first determining submodule is configured to determine a target charging power based on the maximum output power of the charging pile and the charging power threshold of the battery, wherein the charging power threshold is the maximum charging power of the battery at different temperatures; The second determining submodule is configured to determine the target temperature corresponding to the target charging power based on the correspondence between charging power and battery temperature.

[0080] Optionally, the first determining submodule includes: The determining unit is configured to determine the target charging power as the smaller of the maximum output power of the charging pile and the charging power threshold of the battery.

[0081] Optionally, the second determining module 402 includes: The third determining submodule is configured to acquire the target operating parameters of the battery within the most recent target duration, the target operating parameters including current, open circuit voltage and terminal voltage; The fourth determining submodule is configured to determine the average heat generation power of the battery within the most recent target duration based on the target operating parameters, so as to obtain the actual heat generation power.

[0082] Optionally, the cooling actuator is a heat exchange system, the actual cooling parameters include the actual coolant temperature and the actual coolant flow rate, and the target cooling parameters include the target coolant temperature and the target coolant flow rate; The third determining module 403 includes: The fifth determining submodule is configured to determine the target coolant temperature based on the actual heat generation power, the target temperature, and the actual coolant temperature; The sixth determining submodule is configured to determine the target coolant flow rate based on the actual heat generation power and the actual coolant flow rate.

[0083] Optionally, the charging control device 400 further includes: The second control module is configured to control the cooling actuator to stop cooling the battery when the actual temperature of the battery is lower than the target temperature.

[0084] Optionally, the charging control device 400 further includes: The fourth determining module is configured to determine the maximum allowable charging power of the battery based on the actual temperature of the battery when the actual temperature of the battery is lower than the target temperature. The fifth determining module is configured to determine the heating request power based on the actual maximum output power and the maximum allowable charging power when the actual maximum output power is greater than the maximum allowable charging power. The sixth determining module is configured to determine the target heating parameters based on the requested heating power. The third control module is configured to control the heating actuator to heat the battery according to the target heating parameters.

[0085] Optionally, the charging control device 400 further includes: The seventh determining module is configured to determine the actual maximum output power of the charging pile based on the actual output power of the charging pile and the maximum allowable output power of the charging pile.

[0086] Regarding the charging control device 400 in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated here.

[0087] This disclosure also provides a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the steps of the charging control method provided in this disclosure.

[0088] Figure 5 This is a block diagram illustrating a vehicle according to an exemplary embodiment. For example, vehicle 500 can be a hybrid vehicle, a non-hybrid vehicle, an electric vehicle, a fuel cell vehicle, or other types of vehicle. Vehicle 500 can be an autonomous vehicle, a semi-autonomous vehicle, or a non-autonomous vehicle.

[0089] Reference Figure 5 The vehicle 500 may include various subsystems, such as an infotainment system 510, a perception system 520, a decision control system 530, a drive system 540, and a computing platform 550. The vehicle 500 may also include more or fewer subsystems, and each subsystem may include multiple components. Furthermore, each subsystem and component of the vehicle 500 can be interconnected via wired or wireless means.

[0090] In some embodiments, the infotainment system 510 may include a communication system, an entertainment system, and a navigation system, etc.

[0091] The perception system 520 may include several sensors for sensing information about the environment surrounding the vehicle 500. For example, the perception system 520 may include a global positioning system (which may be GPS, BeiDou, or other positioning systems), an inertial measurement unit (IMU), lidar, millimeter-wave radar, ultrasonic radar, and a camera device.

[0092] The decision control system 530 may include a computing system, a vehicle controller, a steering system, a throttle, and a braking system.

[0093] The drive system 540 may include components that provide powered motion to the vehicle 500. In one embodiment, the drive system 540 may include an engine, an energy source, a transmission system, and wheels. The engine may be one or a combination of internal combustion engines, electric motors, and compressed air engines. The engine is capable of converting energy provided by the energy source into mechanical energy.

[0094] Some or all of the functions of vehicle 500 are controlled by computing platform 550. Computing platform 550 may include at least one processor 551 and memory 552, and processor 551 may execute instructions 553 stored in memory 552.

[0095] The processor 551 can be any conventional processor, such as a commercially available CPU. The processor may also include graphics processing units (GPUs), field-programmable gate arrays (FPGAs), systems on chips (SoCs), application-specific integrated circuits (ASICs), or combinations thereof.

[0096] The memory 552 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0097] In addition to instruction 553, memory 552 can also store data, such as road maps, route information, vehicle position, direction, speed, and other data. The data stored in memory 552 can be used by computing platform 550.

[0098] In this embodiment of the present disclosure, the processor 551 may execute instructions 553 to complete all or part of the steps of the above-described charging control method.

[0099] In another exemplary embodiment, a battery is also provided, the battery including a battery management system configured to implement the charging control method described above when executed.

[0100] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented through hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this application.

[0101] In the above detailed description, terms such as "center," "upper," "lower," "left," and "right" indicate direction or positional relationship. Since components of the described device can be positioned in multiple different orientations, these directional terms are for illustrative purposes and not restrictive. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of this disclosure. Therefore, the following detailed description should not be considered limiting.

[0102] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other.

[0103] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0104] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0105] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0106] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0107] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A charging control method, characterized in that, include: The actual maximum output power of the charging pile is determined based on its actual output power and its maximum allowable output power. Determine the target temperature of the battery based on the actual maximum output power of the charging station; If the actual temperature of the battery is greater than or equal to the target temperature, the actual heat generation power of the battery is determined, and the actual heat generation power is the average heat generation power of the battery in the most recent target time period; The target cooling parameters are determined based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator. The cooling actuator is controlled to cool the battery according to the target cooling parameters; The step of determining the actual maximum output power of the charging pile based on its actual output power and its maximum allowable output power includes: When the actual output power of the charging pile is less than the requested power of the battery and remains stable, the real-time output power of the charging pile is obtained, and the minimum value between the real-time output power and the maximum allowable output power of the charging pile is determined as the actual maximum output power of the charging pile.

2. The charging control method according to claim 1, characterized in that, Determining the target battery temperature based on the actual maximum output power of the charging pile includes: The target charging power is determined based on the actual maximum output power of the charging pile and the charging power threshold of the battery. The charging power threshold is the maximum charging power of the battery at different temperatures. Based on the correlation between charging power and battery temperature, the target temperature corresponding to the target charging power is determined.

3. The charging control method according to claim 2, characterized in that, Determining the target charging power based on the actual maximum output power of the charging pile and the charging power threshold of the battery includes: The smaller of the actual maximum output power of the charging pile and the charging power threshold of the battery is determined as the target charging power.

4. The charging control method according to claim 1, characterized in that, Determining the actual heat generation power of the battery includes: Obtain the target operating parameters of the battery within the most recent target time period, the target operating parameters including current, open circuit voltage and terminal voltage; Based on the target operating parameters, the average heat generation power of the battery within the most recent target duration is determined to obtain the actual heat generation power.

5. The charging control method according to claim 1, characterized in that, The cooling actuator is a heat exchange system, the actual cooling parameters include the actual coolant temperature and the actual coolant flow rate, and the target cooling parameters include the target coolant temperature and the target coolant flow rate. The step of determining the target cooling parameters based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator includes: The target coolant temperature is determined based on the actual heat output, the target temperature, and the actual coolant temperature. The target coolant flow rate is determined based on the actual heat generation power and the actual coolant flow rate.

6. The charging control method according to any one of claims 1 to 5, characterized in that, The method further includes: If the actual temperature of the battery is lower than the target temperature, the cooling actuator is controlled to stop cooling the battery.

7. The charging control method according to any one of claims 1 to 5, characterized in that, The method further includes: If the actual temperature of the battery is lower than the target temperature, the maximum allowable charging power of the battery is determined based on the actual temperature of the battery. If the actual maximum output power is greater than the maximum allowable charging power, the heating request power is determined based on the actual maximum output power and the maximum allowable charging power. Determine the target heating parameters based on the requested heating power; The heating actuator is controlled to heat the battery according to the target heating parameters.

8. The charging control method according to any one of claims 1 to 5, characterized in that, The step of determining the actual maximum output power of the charging pile based on its actual output power and its maximum allowable output power further includes: If the actual output power of the charging pile is less than the requested power of the battery and continues to change, the maximum allowable output power of the charging pile shall be determined as the actual maximum output power of the charging pile.

9. The charging control method according to any one of claims 1 to 5, characterized in that, The step of determining the actual maximum output power of the charging pile based on its actual output power and its maximum allowable output power further includes: If the actual output power of the charging pile is greater than or equal to the requested power of the battery, the maximum allowable output power of the charging pile shall be determined as the actual maximum output power of the charging pile.

10. A charging control device, characterized in that, include: The seventh determining module is configured to determine the actual maximum output power of the charging pile based on the actual output power of the charging pile and the maximum allowable output power of the charging pile. The first determining module is configured to determine the target temperature of the battery based on the actual maximum output power of the charging pile; The second determining module is configured to determine the actual heat generation power of the battery when the actual temperature of the battery is greater than or equal to the target temperature, wherein the actual heat generation power is the average heat generation power of the battery in the most recent target time period; The third determining module is configured to determine the target cooling parameters based on the actual heat generation power, the target temperature, and the actual cooling parameters of the cooling actuator; The first control module is configured to control the cooling actuator to cool the battery according to the target cooling parameters; The seventh determining module is configured to, when the actual output power of the charging pile is less than the requested power of the battery and remains stable, obtain the real-time output power of the charging pile, and determine the minimum value between the real-time output power and the maximum allowable output power of the charging pile as the actual maximum output power of the charging pile.

11. A battery, characterized in that, The system includes a battery management system configured to implement the steps of the charging control method according to any one of claims 1 to 9 when executed.

12. A vehicle, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the steps of the charging control method according to any one of claims 1 to 9.

13. A computer program product, characterized in that, It includes a computer program that, when executed by a processor, implements the steps of the charging control method according to any one of claims 1 to 9.

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