Vehicle boost charging control method and device, electronic equipment and storage medium

Abstract

The invention discloses a vehicle boost charging control method and device, electronic equipment and a storage medium, and relates to the technical field of vehicle detection.The method comprises the steps that when a vehicle is subjected to boost charging, a boost module is started based on a first electrical parameter output by a charging pile, a second electrical parameter input by the boost module and a charging demand parameter of a power battery; determining the type of a device limiting boost charging of the vehicle; for any device type, target charging request voltage output by the charging pile is determined based on the limited electrical parameters corresponding to the devices and a preset boost efficiency mapping table, and the target charging request voltage is used for representing voltage actually output by the charging pile; the target charging request voltage is input to the boosting module, so that the boosting module completes boosting charging of the power battery, the charging efficiency is improved, and waste of the charging time and the charging cost is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle testing technology, and in particular to a control method, device, electronic device, and storage medium for vehicle boost charging. Background Technology

[0002] Currently, with social development and technological progress, more and more users are starting to use new energy vehicles for transportation, and the number of charging piles compatible with new energy vehicles is also increasing. However, with the popularization of electric vehicles with an 800V voltage platform, about half of the charging piles on the market have a maximum voltage of 750V or below. This means that when the vehicle voltage is greater than the maximum voltage of the charging pile, a boost module needs to be added to increase the voltage of the charging pile to the vehicle voltage to meet the charging requirements.

[0003] However, the efficiency improvement of traditional charging pile voltage boosting operations does not take into account the impact of different charging scenarios and different device input and output operating conditions on the overall charging power and efficiency of the vehicle, thus affecting charging efficiency and resulting in wasted charging time and costs. Summary of the Invention

[0004] This application provides a control method, device, electronic device, and storage medium for vehicle boost charging. The embodiments provided by this application solve the technical problem that the prior art does not consider the improvement of the overall charging power and efficiency of the vehicle under different charging scenarios and different device input and output working conditions, which affects the charging efficiency and causes a waste of charging time and charging costs. The embodiments provided by this application improve the charging efficiency and reduce the waste of charging time and charging costs.

[0005] In a first aspect, this application provides a control method for boost charging of a vehicle, applied to a vehicle including a boost module. The input terminal of the boost module is connected to a charging pile during vehicle charging, and the output terminal of the boost module is connected to a power battery in the vehicle. The control method for boost charging of the vehicle includes: When the vehicle is undergoing boost charging, the type of device that restricts the vehicle from undergoing boost charging is determined based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery. For any of the device types, based on the limiting electrical parameters of the device and a preset boost efficiency mapping table, the target charging request voltage output by the charging pile is determined, wherein the target charging request voltage is used to characterize the actual output voltage of the charging pile; The target charging request voltage is input to the boost module so that the boost module can complete the boost charging of the power battery.

[0006] In one feasible implementation, determining the type of device restricting the vehicle from performing boost charging based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery includes: Determine the first output power in the first electrical parameter, the second input power in the second electrical parameter, and the charging power in the charging demand parameter; The minimum value among the first output power, the second input power, and the charging power is determined as the limiting charging power that restricts the vehicle from performing boost charging. When the limiting charging power is the first output power, the type of device that limits the vehicle from performing boost charging is determined to be the charging pile; When the limiting charging power is the second input power, the device type that limits the vehicle from performing boost charging is determined to be the boost module; When the limiting charging power is the charging power, the device type that limits the vehicle from performing boost charging is determined to be the power battery.

[0007] In one feasible implementation, the first electrical parameter includes the rated voltage of the charging pile, the limiting electrical parameter includes the limiting charging power, and the determination of the target charging request voltage output by the charging pile based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table includes: When the device type is the charging pile, the limited charging power corresponding to the charging pile is determined to be the first output power; Based on the rated voltage of the charging pile, the first output power, and the current voltage of the power battery in the charging demand parameters, the first voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table. The preset boost efficiency mapping table is used to characterize the boost efficiency of the boost module under different power, different current voltage, and different charging request voltage combinations. The first voltage value is determined as the target charging request voltage output by the charging pile.

[0008] In one feasible implementation, the limiting electrical parameters include limiting charging power, and the first electrical parameter further includes limiting the charging pile current. Determining the target charging request voltage output by the charging pile based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table includes: When the device type is the boost module, the limited charging power of the boost module is determined to be the second input power; Based on the second input power and the charging pile limiting current, the first lower limit voltage of the boost module is determined; Based on the first lower limit voltage, the second input power, and the current voltage of the power battery in the charging demand parameters, the second voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table; The second voltage value is determined as the target charging request voltage output by the charging pile.

[0009] In one feasible implementation, the limiting electrical parameters include limiting charging power, and the first electrical parameter further includes limiting the charging pile current. Determining the target charging request voltage output by the charging pile based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table includes: When the device type is the boost module, the limited charging power of the boost module is determined to be the second input power; Based on the second input power and the charging pile limiting current, the first lower limit voltage of the boost module is determined; Based on the first lower limit voltage, the second input power, and the current voltage of the power battery in the charging demand parameters, the second voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table; The second voltage value is determined as the target charging request voltage output by the charging pile.

[0010] In one feasible implementation, the limiting electrical parameters include limiting charging power, and the first electrical parameter further includes limiting the charging pile current. Determining the target charging request voltage output by the charging pile based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table includes: When the device type is the power battery, the limited charging power of the power battery is determined to be the third output power; Based on the third output power, the initial preset boost efficiency of the boost module, and the charging pile limiting current, the second lower limit voltage of the boost module is determined; Based on the second lower limit voltage, the third output power, and the current voltage of the power battery in the charging demand parameters, the third voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table; The third voltage value is determined as the target charging request voltage output by the charging pile.

[0011] In one feasible implementation, determining the second lower limit voltage of the boost module based on the third output power, the initial preset boost efficiency of the boost module, and the charging pile limiting current includes: The ratio of the third output power to the initial preset boost efficiency is determined as the third actual output power; The ratio of the third actual output power to the charging pile limiting current is determined as the second lower limit voltage of the boost module.

[0012] In one feasible implementation, before inputting the target charging request voltage to the boost module, the method further includes: Obtain the maximum output voltage of the charging pile and the maximum input voltage of the boost module; The target charging request voltage is adjusted based on the minimum value between the maximum output voltage and the maximum input voltage.

[0013] In a second aspect, this application provides a vehicle boost charging control device. The vehicle boost charging control device is configured in a vehicle including a boost module. The input terminal of the boost module is connected to a charging pile during vehicle charging, and the output terminal of the boost module is connected to a power battery in the vehicle. The vehicle boost charging control device includes: The first determining module is used to determine the type of device that restricts the vehicle from performing boost charging based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery when the vehicle is being boost charged. The second determining module is used to determine the target charging request voltage output by the charging pile for any of the device types, based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table, wherein the target charging request voltage is used to characterize the voltage actually output by the charging pile; An input module is used to input the target charging request voltage to the boost module so that the boost module can complete the boost charging of the power battery.

[0014] In a third aspect of this application, an electronic device is provided, comprising: a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus, and the machine-readable instructions are executed by the processor to perform the steps of the vehicle boost charging control method described above.

[0015] Compared with the prior art, the vehicle boost charging control method, device, electronic equipment, and storage medium provided in this application, when the vehicle is undergoing boost charging, determine the type of device that restricts the vehicle from boost charging based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery; for any device type, determine the target charging request voltage output by the charging pile based on the corresponding limiting electrical parameters of the device and a preset boost efficiency mapping table, wherein the target charging request voltage is used to characterize the actual output voltage of the charging pile; and input the target charging request voltage to the boost module so that the boost module can complete the boost charging of the power battery. The embodiments provided in this application improve charging efficiency and reduce the waste of charging time and charging costs. Attached Figure Description

[0016] Figure 1 This paper shows a block diagram of the structure of each device in a vehicle boost charging control method provided in an embodiment of this application; Figure 2 A flowchart illustrating a vehicle boost charging control method provided in an embodiment of this application is shown. Figure 3 This paper shows a structural block diagram of a vehicle boost charging control device provided in an embodiment of this application; Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown.

[0017] Figure 3 and Figure 4 The correspondence between the figure labels and figure titles in the accompanying drawings is as follows: 10 Vehicle; 110 Boost module; 120 Power battery; 20 Charging pile; 300 Vehicle boost charging control device; 310 First determination module; 320 Second determination module; 330 Acquisition module; 340 Correction module; 350 Input module; 400 Electronic device; 410 Processor; 420 Memory; 430 Bus. Detailed Implementation

[0018] To better understand the technical solutions provided in the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0019] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. The term "two or more" includes two or more cases.

[0020] First, the applicable application scenarios of this application will be introduced. The embodiments provided in this application are applicable to the field of vehicle detection technology, and in particular relate to a control method, device, electronic device and storage medium for vehicle boost charging.

[0021] Currently, with social development and technological progress, more and more users are starting to use new energy vehicles for transportation, and the number of charging piles compatible with new energy vehicles is also increasing. However, with the popularization of electric vehicles with an 800V voltage platform, about half of the charging piles on the market have a maximum voltage of 750V or below. This means that when the vehicle voltage is greater than the maximum voltage of the charging pile, a boost module needs to be added to increase the voltage of the charging pile to the vehicle voltage to meet the charging requirements.

[0022] However, the efficiency improvement of traditional charging pile voltage boosting operations does not take into account the impact of different charging scenarios and different device input and output operating conditions on the overall charging power and efficiency of the vehicle, thus affecting charging efficiency and resulting in wasted charging time and costs.

[0023] The current typical boost charging method uses a fixed input voltage at the boost converter and the output voltage is the battery voltage. However, in order to be compatible with charging piles with capacities of 500V and 750V, most charging piles on the market generally have their output voltage fixed at around 450V. At this time, the maximum current of the charging pile is 100A, which determines that the charging power of the above charging pile is 45kW. If the voltage requested by the charging pile is increased to 600V, the charging power of the above charging pile will reach 60kW, which is a significant improvement.

[0024] Conventional boost converters have different operating efficiencies depending on the input or output voltage or current, and the typical operating efficiency range of boost converters is between 90% and 98%. If the same input power is 100kW, the power input to the power battery is 90kW with 90% efficiency, while it is 98kW with 98% efficiency. The actual power entering the battery pack will be increased by about 9%.

[0025] Based on this, the embodiments of this application provide a control method, device, electronic device and storage medium for vehicle boost charging. The embodiments provided by this application solve the technical problem in the prior art that the improvement of the overall charging power and efficiency of the vehicle charging is not considered under different actual charging scenarios and different device input and output working conditions, which affects the charging efficiency and causes a waste of charging time and charging costs. The embodiments provided by this application improve the charging efficiency and reduce the waste of charging time and charging costs.

[0026] Figure 1 This illustration shows a structural block diagram of each device in a vehicle boost charging control method provided in an embodiment of this application. For example... Figure 1 As shown, the embodiments provided in this application are applied to a vehicle 10 that includes a boost module 110. The input terminal of the boost module 110 is connected to the charging pile 20 when the vehicle 10 is charging, and the output terminal of the boost module 110 is connected to the power battery 120 in the vehicle 10.

[0027] In the embodiments provided above, the boost module 110 and the power battery 120 are installed inside the vehicle 10, while the charging pile 20 is installed outside the vehicle 10.

[0028] It should be noted that the use and model of the charging pile 20 in the embodiments provided in this application can be customized according to different application scenarios and usage habits. The charging pile 20 in the embodiments provided in this application can be specifically set to 500V or 750V.

[0029] The model and specifications of the boost module 110 in the embodiments provided in this application can also be customized and used according to different application scenarios and usage conditions. The boost module 110 in the embodiments provided in this application can be specifically configured as a booster.

[0030] Figure 2 A flowchart illustrating a vehicle boost charging control method provided in an embodiment of this application is shown. Figure 2 As shown, the control method for vehicle boost charging includes the following steps: S201. When the vehicle is undergoing boost charging, the type of device that restricts the vehicle from undergoing boost charging is determined based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery.

[0031] In this step, when determining to perform boost charging on the aforementioned vehicle, the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery are first obtained. From the electrical parameters of the three devices, it is determined which device limits the maximum charging power, that is, which device restricts the vehicle from performing boost charging.

[0032] It is understood that the first electrical parameters output by the charging pile in the embodiments provided in this application include, but are not limited to, the first output power, denoted by P1, the first maximum charging voltage U1max, the rated voltage of the charging pile U1, and the first maximum output current I1.

[0033] It should be noted that in the embodiments provided in this application, U1 < U1max, and P1 = U1 * I1.

[0034] In the embodiments provided in this application, the second electrical parameters output by the boost module include, but are not limited to, the second input power, denoted by P2, the second maximum charging voltage U2max, the boost module rated voltage U2, and the second maximum input current I2.

[0035] It should be noted that in the embodiments provided in this application, U2 < U2max, and P2 = U2 * I2, and the initial preset boost efficiency of the boost module in the embodiments provided in this application is represented by η.

[0036] As mentioned above, the preset boost efficiency will vary depending on the charging voltage and current. The preset boost efficiency mapping table is used to characterize the boost efficiency of the boost module under different power, different current voltage and different charging request voltage combinations.

[0037] Here, in the embodiments provided in this application, the charging demand parameters of the power battery include, but are not limited to, the charging power, denoted by P3, the third maximum charging voltage U3max, the current voltage U3 of the power battery in the charging demand parameters, and the third maximum output current I3.

[0038] It should be noted that in the embodiments provided in this application, U3 < U3max, and P3 = U3 * I3, and the initial preset boost efficiency of the boost module in the embodiments provided in this application is represented by η.

[0039] Here, U1max, U2max, and U3max are used to characterize the maximum output voltage, while U1, U2, and U3 are used to characterize the optimal operating voltage of the device.

[0040] In the embodiments provided in this application, the above-mentioned operations of obtaining the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery are repeatedly performed at a preset period. In the embodiments provided in this application, the preset period setting can be customized and used according to different application scenarios and usage conditions. The preset period in the embodiments provided in this application can be specifically set to 10s.

[0041] S202. For any device type, based on the limiting electrical parameters of the device and the preset boost efficiency mapping table, determine the target charging request voltage output by the charging pile, wherein the target charging request voltage is used to characterize the actual output voltage of the charging pile.

[0042] In this step, the device types provided in the embodiments of this application only include Figure 1 The three devices mentioned are a boost module, a charging pile, and a power battery. The embodiments provided in this application dynamically calculate and select the "most cost-effective" target charging request voltage to request the charging pile output based on the limited charging power in the limited electrical parameters of the boost module, the charging pile, and the power battery, and a preset boost efficiency mapping table, so as to maximize the working efficiency of the boost module.

[0043] It is understandable that the target charging request voltage is the actual output voltage of the charging pile and the actual input voltage of the boost module, denoted by Uin.

[0044] It should be noted that the actual output voltage of the boost module in the embodiments provided in this application is represented by Uout, which is also the current voltage U3 of the power battery, and Uout = U3.

[0045] S203. Input the target charging request voltage to the boost module so that the boost module can complete the boost charging of the power battery.

[0046] In this step, in the embodiments provided in this application, after determining the target charging request voltage, the charging pile is requested to output or the boost module is requested to input the target charging request voltage so as to complete the boost charging of the power battery according to the first output power or the second input power or the charging power.

[0047] It is understandable that after the target charging request voltage is input to the boost module so that the boost module can complete the boost charging of the power battery, the embodiments provided in this application will also update the preset boost efficiency mapping table based on the actual operating parameters of the boost module.

[0048] Compared with the prior art, the vehicle boost charging control method provided in this application determines the type of device that restricts the vehicle from boost charging based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery. For any device type, the target charging request voltage output by the charging pile is determined based on the corresponding limiting electrical parameters and a preset boost efficiency mapping table. The target charging request voltage is used to characterize the actual output voltage of the charging pile. The target charging request voltage is input to the boost module so that the boost module can complete the boost charging of the power battery. The embodiment provided in this application improves charging efficiency, reduces the waste of charging time and charging costs, and thus reduces the waste of charging resources and energy loss.

[0049] In one feasible implementation, based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery, the type of device restricting the vehicle from performing boost charging is determined, including: The system determines the first output power in the first electrical parameter, the second input power in the second electrical parameter, and the charging power in the charging demand parameter; it then determines the minimum value among the first output power, the second input power, and the charging power as the limiting charging power for the vehicle to perform boost charging; when the limiting charging power is the first output power, the device type for limiting the vehicle to perform boost charging is determined to be the charging pile; when the limiting charging power is the second input power, the device type for limiting the vehicle to perform boost charging is determined to be the boost module; and when the limiting charging power is the charging power, the device type for limiting the vehicle to perform boost charging is determined to be the power battery.

[0050] It is understood that the embodiments provided in this application need to determine the smallest of the first output power and the second input power as the limiting charging power for the vehicle to perform boost charging, that is, to determine min (P1, P2, P3). When the limiting charging power for the vehicle to perform boost charging is determined to be the first output power, the device type for limiting the vehicle to perform boost charging is determined to be a charging pile, that is, the charging pile is the bottleneck for limiting vehicle charging.

[0051] It should be noted that when the limiting charging power for the vehicle to perform boost charging is determined to be the second input power, the device type that limits the vehicle to perform boost charging is determined to be the boost module, that is, the boost module is the bottleneck that limits the vehicle charging.

[0052] Specifically, when determining the limiting charging power for vehicles to perform boost charging as the charging power, the type of device that limits vehicles to perform boost charging is determined to be the power battery, meaning that the power battery itself is the bottleneck limiting vehicle charging.

[0053] In this application, by identifying the charging bottlenecks under different operating conditions and application scenarios, i.e. the types of devices that limit the vehicle from boost charging, the target charging request voltage output by the subsequent charging pile is adjusted accordingly. This ensures that the current charging bottleneck can achieve the maximum charging power under the current mode, thereby improving the working efficiency of the boost module and ensuring that the final charging power of the power battery is the maximum and fastest, thus improving the charging efficiency in different scenarios.

[0054] In one feasible implementation, the first electrical parameter includes the rated voltage of the charging pile, and the limiting electrical parameter includes the limiting charging power. Based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table, the target charging request voltage output by the charging pile is determined, including: When the device type is a charging pile, the limited charging power corresponding to the charging pile is determined as the first output power; based on the rated voltage of the charging pile, the first output power, and the current voltage of the power battery in the charging demand parameters, the first voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table, wherein the preset boost efficiency mapping table is used to characterize the boost efficiency of the boost module under different power, different current voltage, and different charging request voltage combinations; the first voltage value is determined as the target charging request voltage output by the charging pile.

[0055] It is understood that, in the embodiments provided in this application, a preset boost efficiency mapping table is first determined to characterize the boost efficiency of the boost module under different power pins, different current voltages U3, and different charging request voltage combinations.

[0056] When the device type is determined to be a charging pile, i.e., when min(P1, P2, P3) = P1, the limited charging power corresponding to the charging pile is the first output power. That is, the charging efficiency of the power battery is limited by the charging pile. At this time, in order to reach the first output power P1 corresponding to the charging pile, it is necessary to ensure that the first voltage value is greater than or equal to the rated voltage of the charging pile, i.e., Uin≥U1. By determining that the three conditions of Pin=P1, Uout=U3, and Uin≥U1 are met, the first voltage value under the maximum boost efficiency is queried in the preset boost efficiency mapping table by interpolation and given to the charging pile. The first voltage value is then determined as the target charging request voltage output by the charging pile.

[0057] In this application, when the device type is a charging pile, charging is achieved by determining the first voltage value of the boost module at the maximum boost efficiency, thereby enabling charging with the maximum charging power.

[0058] In one feasible implementation, the limiting electrical parameters include limiting charging power, and the first electrical parameter further includes limiting the charging pile current. Based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table, the target charging request voltage output by the charging pile is determined, including: When the device type is a boost module, the limited charging power of the boost module is determined to be the second input power; based on the second input power and the charging pile's limited current, the first lower limit voltage of the boost module is determined; based on the first lower limit voltage, the second input power, and the current voltage of the power battery in the charging demand parameters, the second voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table; the second voltage value is determined as the target charging request voltage output by the charging pile.

[0059] When the device type is determined to be a boost module, i.e., when min(P1, P2, P3) = P2, the limited charging power corresponding to the boost module is the second output power. That is, the charging efficiency of the power battery is limited by the boost module. At this time, in order to reach the second output power P2 corresponding to the boost module, it is necessary to ensure that the second voltage value is greater than or equal to the first lower limit voltage U2, i.e., Uin≥U2. By determining that the three conditions of Pin=P2, Uout=U2, and Uin≥U2 are met, the second voltage value under the maximum boost efficiency is queried in the preset boost efficiency mapping table by interpolation and given to the charging pile. The second voltage value is then determined as the target charging request voltage output by the charging pile.

[0060] It should be noted that, based on the second input power and the charging pile's current limiting, the first lower limit voltage of the boost module is determined, including: The ratio of the second input power to the charging pile's limiting current is determined as the first lower limit voltage of the boost module.

[0061] In the above, the charging pile limiting current in the embodiments provided in this application is specifically the first maximum output current, represented by I1, where U2 = P2 / I1.

[0062] In this application, when the device type is a boost module, charging is achieved by determining the second voltage value of the boost module at the maximum boost efficiency, thereby enabling charging with the maximum charging power.

[0063] In one feasible implementation, the limiting electrical parameters include limiting charging power, and the first electrical parameter further includes limiting the charging pile current. Based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table, the target charging request voltage output by the charging pile is determined, including: When the device type is a power battery, the limited charging power of the power battery is determined as the third output power; based on the third output power, the initial preset boost efficiency of the boost module, and the charging pile limiting current, the second lower limit voltage of the boost module is determined; based on the second lower limit voltage, the third output power, and the current voltage of the power battery in the charging demand parameters, the third voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table; the third voltage value is determined as the target charging request voltage output by the charging pile.

[0064] It is understandable that when the device type is determined to be a power battery, i.e., when min(P1, P2, P3) = P3, the limited charging power corresponding to the power battery is the third output power. That is, the charging efficiency of the power battery is limited by the power battery itself. At this time, if the third output power P3 corresponding to the power battery is to be reached, the third voltage value Uin needs to be greater than or equal to the second lower limit voltage U3, i.e., Uin≥U3. By determining that the three conditions of Pin=P3, Uout=U3, and Uin≥P3 / η / I1 are met, the second voltage value under the maximum boost efficiency is queried in the preset boost efficiency mapping table by interpolation and given to the charging pile. The third voltage value is then determined as the target charging request voltage output by the charging pile.

[0065] Specifically, the second lower limit voltage is determined as follows: the ratio of the third output power to the initial preset boost efficiency is determined as the third actual output power; and the ratio of this ratio to the charging pile limiting current is determined as the second lower limit voltage of the boost module.

[0066] It is understandable that the second lower limit voltage = P3 / η / I1.

[0067] In this application, when the device type is a power battery, charging is achieved by determining the third voltage value of the boost module at the maximum boost efficiency, thereby enabling charging with the maximum charging power.

[0068] In one feasible implementation, the method further includes, before inputting the target charging request voltage to the boost module: Obtain the maximum output voltage of the charging pile and the maximum input voltage of the boost module; based on the minimum value between the maximum output voltage and the maximum input voltage, correct the target charging request voltage.

[0069] It is understood that the embodiments provided in this application ensure that the target charging request voltage calculated by the algorithm does not exceed the safety limit of the maximum output voltage required by the physical hardware, i.e., the charging pile, by designing a safety boundary correction step.

[0070] It should be noted that the embodiments provided in this application perform the following two tasks: 1. Obtain the safety red line: obtain the maximum output voltage of the charging pile, such as 750V. This is the absolute upper limit that the charging pile hardware can output. Exceeding the maximum output voltage will cause an error or damage. Also obtain the maximum input voltage of the boost module, such as 1000V. This is the absolute upper limit that the input terminal of the boost module can withstand. Exceeding this value may damage vehicle components.

[0071] 2. Based on the minimum of the two voltage values ​​mentioned above, the target charging request voltage is adjusted.

[0072] In this application, by modifying the target charging request voltage, the target charging request voltage is ensured to be within a range that is safe and acceptable to both hardware components, thereby reducing potential safety hazards to the vehicle.

[0073] Figure 3 A structural block diagram of a vehicle boost charging control device provided in an embodiment of this application is shown. Figure 3 As shown, a vehicle boost charging control device 300 is configured in a vehicle containing a boost module. The boost module's input terminal is connected to a charging pile during vehicle charging, and its output terminal is connected to the vehicle's power battery. The vehicle boost charging control device 300 includes: The first determining module 310 is used to determine the type of device that restricts the vehicle from performing boost charging based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery when the vehicle is performing boost charging.

[0074] The second determining module 320 is used to determine the target charging request voltage output by the charging pile for any device type, based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table, wherein the target charging request voltage is used to characterize the actual output voltage of the charging pile.

[0075] The acquisition module 330 is used to acquire the maximum output voltage of the charging pile and the maximum input voltage of the boost module.

[0076] The correction module 340 is used to correct the target charging request voltage based on the minimum of the maximum output voltage and the maximum input voltage.

[0077] The input module 350 is used to input the target charging request voltage to the boost module so that the boost module can complete the boost charging of the power battery.

[0078] In one feasible embodiment, the first determining module 310 is specifically used for: Determine the first output power in the first electrical parameter, the second input power in the second electrical parameter, and the charging power in the charging demand parameter.

[0079] The minimum value among the first output power, the second input power, and the charging power is determined as the limiting charging power that restricts the vehicle from performing boost charging.

[0080] When the charging power is limited to the first output power, the type of device that restricts the vehicle from performing boost charging is determined to be a charging pile.

[0081] When the charging power is limited to the second input power, the device type that limits the vehicle to boost charging is determined to be a boost module.

[0082] When the charging power is limited to the charging power, the type of device that limits the vehicle from performing boost charging is determined to be the power battery.

[0083] In one feasible embodiment, the first electrical parameter includes the rated voltage of the charging pile, the limiting electrical parameter includes the limiting charging power, and the second determining module 320 is specifically used for: When the device type is a charging pile, the limited charging power corresponding to the charging pile is determined to be the first output power.

[0084] Based on the charging pile's rated voltage, the first output power, and the current voltage of the power battery in the charging demand parameters, the first voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table. The preset boost efficiency mapping table is used to characterize the boost efficiency of the boost module under different power, different current voltage, and different charging request voltage combinations.

[0085] The first voltage value is determined as the target charging request voltage output by the charging pile.

[0086] In one feasible embodiment, limiting electrical parameters includes limiting charging power, and the first electrical parameter further includes limiting the charging pile current. The second determining module 320 is specifically used for: When the device type is a boost module, the limit charging power of the boost module is determined to be the second input power.

[0087] Based on the second input power and the charging pile's current limit, the first lower limit voltage of the boost module is determined.

[0088] Based on the first lower limit voltage, the second input power, and the current voltage of the power battery in the charging demand parameters, the second voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table.

[0089] The second voltage value is determined as the target charging request voltage output by the charging pile.

[0090] In one feasible embodiment, determining the first lower limit voltage of the boost module based on the second input power and the charging pile limiting current includes: The ratio of the second input power to the charging pile's limiting current is determined as the first lower limit voltage of the boost module.

[0091] In one feasible embodiment, limiting electrical parameters includes limiting charging power, and the first electrical parameter further includes limiting the charging pile current. The second determining module 320 is specifically used for: When the device type is a power battery, the limit charging power of the power battery is determined to be the third output power.

[0092] Based on the third output power, the initial preset boost efficiency of the boost module, and the charging pile current limit, the second lower limit voltage of the boost module is determined.

[0093] Based on the second lower limit voltage, the third output power, and the current voltage of the power battery in the charging demand parameters, the third voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table.

[0094] The third voltage value is determined as the target charging request voltage output by the charging pile.

[0095] In one feasible embodiment, the second lower limit voltage of the boost module is determined based on the third output power, the initial preset boost efficiency of the boost module, and the charging pile limiting current, including: The ratio of the third output power to the initial preset boost efficiency is determined as the third actual output power.

[0096] The ratio of this ratio to the charging pile's current limit is determined as the second lower limit voltage of the boost module.

[0097] The vehicle boost charging control device 300 provided in this application embodiment, compared with the prior art, determines the type of device restricting the vehicle from boost charging based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery when the vehicle is boost charging. For any device type, the target charging request voltage output by the charging pile is determined based on the corresponding limiting electrical parameters and a preset boost efficiency mapping table. The target charging request voltage is used to characterize the actual output voltage of the charging pile. The target charging request voltage is input to the boost module so that the boost module can complete the boost charging of the power battery. The embodiment provided in this application improves charging efficiency, reduces the waste of charging time and charging costs, and thus reduces the waste of charging resources and energy loss.

[0098] Please see Figure 4 , Figure 4 This application provides a schematic diagram of the structure of an electronic device according to an embodiment of the present application. Figure 4 As shown, the electronic device 400 includes a processor 410, a memory 420, and a bus 430.

[0099] Memory 420 stores machine-readable instructions executable by processor 410. When electronic device 400 is running, processor 410 and memory 420 communicate via bus 430. When the machine-readable instructions are executed by processor 410, they can perform the operations described above. Figure 2 The steps of the vehicle boost charging control method in the illustrated embodiment can be found in the method embodiment for specific implementation, and will not be repeated here.

[0100] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can perform the above-described actions. Figure 2 The steps of the vehicle boost charging control method in the illustrated embodiment can be found in the method embodiment for specific implementation, and will not be repeated here.

[0101] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0102] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0103] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-readable program code.

[0104] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0105] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0106] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0107] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to execute a process of a vehicle boost charging control method.

[0108] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0109] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0110] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between devices or units, and may be electrical, mechanical, or other forms.

[0111] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0112] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0113] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0114] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

[0115] Although preferred embodiments have been described in this specification, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this specification.

[0116] Obviously, those skilled in the art can make various modifications and variations to this specification without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, this specification is also intended to include such modifications and variations.

Claims

1. A control method for boost charging of a vehicle, applied to a vehicle including a boost module, characterized in that, The input terminal of the boost module is connected to the charging pile during vehicle charging, and the output terminal of the boost module is connected to the power battery in the vehicle. The control method for boost charging of the vehicle includes: When the vehicle is undergoing boost charging, the type of device that restricts the vehicle from undergoing boost charging is determined based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery. For any of the device types, based on the limiting electrical parameters of the device and a preset boost efficiency mapping table, the target charging request voltage output by the charging pile is determined, wherein the target charging request voltage is used to characterize the actual output voltage of the charging pile; The target charging request voltage is input to the boost module so that the boost module can complete the boost charging of the power battery.

2. The control method for vehicle boost charging according to claim 1, characterized in that, The method for determining the types of devices that restrict the vehicle from performing boost charging, based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery, includes: Determine the first output power in the first electrical parameter, the second input power in the second electrical parameter, and the charging power in the charging demand parameter; The minimum value among the first output power, the second input power, and the charging power is determined as the limiting charging power that restricts the vehicle from performing boost charging. When the limiting charging power is the first output power, the type of device that limits the vehicle from performing boost charging is determined to be the charging pile; When the limiting charging power is the second input power, the device type that limits the vehicle from performing boost charging is determined to be the boost module; When the limiting charging power is the charging power, the device type that limits the vehicle from performing boost charging is determined to be the power battery.

3. The control method for vehicle boost charging according to claim 2, characterized in that, The first electrical parameter includes the rated voltage of the charging pile, and the limiting electrical parameter includes the limiting charging power. The determination of the target charging request voltage output by the charging pile based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table includes: When the device type is the charging pile, the limited charging power corresponding to the charging pile is determined to be the first output power; Based on the rated voltage of the charging pile, the first output power, and the current voltage of the power battery in the charging demand parameters, the first voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table. The preset boost efficiency mapping table is used to characterize the boost efficiency of the boost module under different power, different current voltage, and different charging request voltage combinations. The first voltage value is determined as the target charging request voltage output by the charging pile.

4. The control method for vehicle boost charging according to claim 2, characterized in that, The limiting electrical parameters include limiting charging power, and the first electrical parameter also includes limiting the charging pile current. The determination of the target charging request voltage output by the charging pile based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table includes: When the device type is the boost module, the limited charging power of the boost module is determined to be the second input power; Based on the second input power and the charging pile limiting current, the first lower limit voltage of the boost module is determined; Based on the first lower limit voltage, the second input power, and the current voltage of the power battery in the charging demand parameters, the second voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table; The second voltage value is determined as the target charging request voltage output by the charging pile.

5. The control method for vehicle boost charging according to claim 4, characterized in that, The step of determining the first lower limit voltage of the boost module based on the second input power and the charging pile limiting current includes: The ratio of the second input power to the charging pile limiting current is determined as the first lower limit voltage of the boost module.

6. The control method for vehicle boost charging according to claim 2, characterized in that, The limiting electrical parameters include limiting charging power, and the first electrical parameter also includes limiting the charging pile current. The determination of the target charging request voltage output by the charging pile based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table includes: When the device type is the power battery, the limited charging power of the power battery is determined to be the third output power; Based on the third output power, the initial preset boost efficiency of the boost module, and the charging pile limiting current, the second lower limit voltage of the boost module is determined; Based on the second lower limit voltage, the third output power, and the current voltage of the power battery in the charging demand parameters, the third voltage value of the boost module at the maximum boost efficiency is determined from the preset boost efficiency mapping table; The third voltage value is determined as the target charging request voltage output by the charging pile.

7. The control method for vehicle boost charging according to claim 6, characterized in that, The step of determining the second lower limit voltage of the boost module based on the third output power, the initial preset boost efficiency of the boost module, and the charging pile limiting current includes: The ratio of the third output power to the initial preset boost efficiency is determined as the third actual output power; The ratio of the third actual output power to the charging pile limiting current is determined as the second lower limit voltage of the boost module.

8. The control method for vehicle boost charging according to claim 1, characterized in that, Before inputting the target charging request voltage to the boost module, the method further includes: Obtain the maximum output voltage of the charging pile and the maximum input voltage of the boost module; The target charging request voltage is adjusted based on the minimum value between the maximum output voltage and the maximum input voltage.

9. A control device for vehicle boost charging, wherein the vehicle boost charging control device is disposed in a vehicle including a boost module, characterized in that, The input terminal of the boost module is connected to the charging pile during vehicle charging, and the output terminal of the boost module is connected to the power battery in the vehicle. The control device for vehicle boost charging includes: The first determining module is used to determine the type of device that restricts the vehicle from performing boost charging based on the first electrical parameters output by the charging pile, the second electrical parameters input by the boost module, and the charging demand parameters of the power battery when the vehicle is being boost charged. The second determining module is used to determine the target charging request voltage output by the charging pile for any of the device types, based on the limiting electrical parameters corresponding to the device and a preset boost efficiency mapping table, wherein the target charging request voltage is used to characterize the voltage actually output by the charging pile; An input module is used to input the target charging request voltage to the boost module so that the boost module can complete the boost charging of the power battery.

10. An electronic device, characterized in that, include: The device includes a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. The machine-readable instructions are executed by the processor to perform the steps of the vehicle boost charging control method as described in any one of claims 1-8.

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