A method and device for rapid power compensation, a vehicle and a storage medium

Abstract

The application provides a method and device for quickly charging, a vehicle and a storage medium. The method comprises the following steps: acquiring a first maximum output power of an external power supply, a second maximum output power of an internal power supply and a maximum charging power of a target energy storage object; determining a current power distribution strategy of the external power supply and the internal power supply according to the first maximum output power, the second maximum output power, the maximum charging power and a preset constraint rule; determining current actual output powers of the external power supply and the internal power supply respectively according to the current power distribution strategy, and controlling the external power supply and the internal power supply to work at the determined current actual output powers, so as to quickly charge the target energy storage object. In this way, the method can realize safe and quick charging.

Description

Technical Field

[0001] This application relates to the field of power and energy storage technology, and in particular to a method, device, vehicle and storage medium for rapid power replenishment. Background Technology

[0002] With the popularization of new energy vehicles, range-extended electric vehicles (REEVs) have become an important market choice due to their advantages of "pure electric drive and no range anxiety." Their energy replenishment methods mainly include obtaining external grid power through charging stations and generating electricity by consuming fuel through an onboard range extender. Currently, technological developments in the charging process mainly focus on optimizing single charging modes, but existing solutions still have significant shortcomings in complex real-world application scenarios. For example, users have an urgent need for rapid power replenishment in certain specific scenarios (such as during long-distance travel or at public charging stations). However, traditional AC slow charging stations, due to their power limitations, charge too slowly to meet rapid energy replenishment requirements. Although DC fast charging stations can provide higher power, their actual charging capacity is often limited by factors such as the rated power of the charging station itself, grid load, multiple vehicles sharing a power pool, or equipment aging, resulting in their output power not reaching the maximum charging power that the vehicle's battery pack can accept. In this case, the vehicle's high charging capacity is constrained by external conditions, causing unnecessary extensions in charging time and a decline in user experience.

[0003] In conclusion, existing range-extended electric vehicles urgently need an innovative method for rapid charging that can achieve safe and fast charging. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a rapid power replenishment method, device, vehicle, and storage medium, which simultaneously replenishes the target energy storage object by using external power and internal power. During the power replenishment process, the power of each device is considered and constraint rules are set to ensure a more reasonable power distribution between the external and internal power sources, thereby achieving safe and rapid power replenishment.

[0005] This application provides a rapid power replenishment method, the rapid power replenishment method comprising: Obtain the first maximum output power of the external power source, the second maximum output power of the internal power source, and the maximum charging power of the target energy storage object; Based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules, determine the current power allocation strategy for the external power supply and the internal power supply; Based on the current power allocation strategy, the current actual output power of the external power supply and the internal power supply are determined respectively, and the external power supply and the internal power supply are controlled to work according to the determined current actual output power in order to quickly replenish the target energy storage object.

[0006] Optionally, determining the current power allocation strategy for the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules includes: Determine whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; If the output power is not greater than the specified value, the first maximum output power is determined as the current actual output power of the external power supply, and the second maximum output power is determined as the current actual output power of the internal power supply.

[0007] Optionally, determining the current power allocation strategy for the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules includes: Determine whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; If it is greater than the specified value, the current actual output power of the external power supply and the internal power supply shall be determined according to the principle of lowest charging cost.

[0008] Optionally, determining the current actual output power of the external power supply and the internal power supply based on the principle of lowest charging cost includes: The power margin is determined based on the difference between the sum of the first maximum output power and the second maximum output power and the maximum charging power. The traversal step size is determined based on the power margin and the preset number of traversal steps. During each traversal, the first current candidate output power of the external power supply is determined based on the first initial power, the current traversal step number, and the traversal step size. The second current candidate output power of the internal power supply is determined based on the second initial power and the current candidate output power of the external power supply. The first initial power is determined based on the first maximum output power and the power margin, and the second initial power is determined based on the maximum charging power. Based on the first current candidate output power of the external power source and its corresponding electricity billing rules, and the current candidate output power of the internal power source and its corresponding electricity billing rules, the predicted charging cost for this traversal is determined. The first current candidate output power corresponding to the minimum predicted charging cost is determined as the current actual output power of the external power supply, and the second current candidate output power corresponding to the minimum predicted charging cost is determined as the current actual output power of the internal power supply.

[0009] Optionally, before obtaining the first maximum output power of the external power source, the second maximum output power of the internal power source, and the maximum charging power of the target energy storage object, the rapid power replenishment method further includes: It can identify in real time whether the user issues a rapid power replenishment command.

[0010] Optionally, when the current actual output power of the external power supply and the internal power supply is determined based on the principle of minimizing charging costs, and the external power supply and the internal power supply are controlled to operate according to the determined current actual output power, the rapid power replenishment method further includes: The electricity billing rules for the external power source are monitored in real time to determine whether there are any updates to the electricity billing rules. If present, the current actual output power of the external power supply and the internal power supply is re-determined based on the principle of lowest charging cost, and the external power supply and the internal power supply are controlled to operate according to the re-determined current actual output power.

[0011] Optionally, when applied to range-extended electric vehicles, the rapid charging method includes: The first maximum output power of the charging pile, the second maximum output power of the range extender, and the maximum charging power of the charging battery inside the range-extended electric vehicle are obtained. The current power allocation strategy for the charging pile and the range extender is determined based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules. Based on the current power allocation strategy, the current actual output power of the charging pile and the range extender are determined respectively, and the charging pile and the range extender are controlled to work according to the determined current actual output power in order to quickly replenish the charging battery.

[0012] This application embodiment also provides a rapid power replenishment device, the rapid power replenishment device comprising: The acquisition module is used to acquire the first maximum output power of the external power supply, the second maximum output power of the internal power supply, and the maximum charging power of the target energy storage object. The determination module is used to determine the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power and the preset constraint rules. The control module is used to determine the current actual output power of the external power supply and the internal power supply according to the current power allocation strategy, and control the external power supply and the internal power supply to work according to the determined current actual output power, so as to quickly replenish the target energy storage object.

[0013] Optionally, when determining the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules, the determining module is used to: Determine whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; If the output power is not greater than the specified value, the first maximum output power is determined as the current actual output power of the external power supply, and the second maximum output power is determined as the current actual output power of the internal power supply.

[0014] Optionally, when determining the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules, the determining module is used to: Determine whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; If it is greater than the specified value, the current actual output power of the external power supply and the internal power supply shall be determined according to the principle of lowest charging cost.

[0015] Optionally, when determining the current actual output power of the external power supply and the internal power supply based on the principle of lowest charging cost, the determining module is used to: The power margin is determined based on the difference between the sum of the first maximum output power and the second maximum output power and the maximum charging power. The traversal step size is determined based on the power margin and the preset number of traversal steps. During each traversal, the first current candidate output power of the external power supply is determined based on the first initial power, the current traversal step number, and the traversal step size. The second current candidate output power of the internal power supply is determined based on the second initial power and the current candidate output power of the external power supply. The first initial power is determined based on the first maximum output power and the power margin, and the second initial power is determined based on the maximum charging power. Based on the first current candidate output power of the external power source and its corresponding electricity billing rules, and the current candidate output power of the internal power source and its corresponding electricity billing rules, the predicted charging cost for this traversal is determined. The first current candidate output power corresponding to the minimum predicted charging cost is determined as the current actual output power of the external power supply, and the second current candidate output power corresponding to the minimum predicted charging cost is determined as the current actual output power of the internal power supply.

[0016] Optionally, the fast charging device further includes an identification module, which is used for: Before acquiring the first maximum output power of the external power source, the second maximum output power of the internal power source, and the maximum charging power of the target energy storage object, the system identifies in real time whether the user has issued a rapid power replenishment command.

[0017] Optionally, when the current actual output power of the external power supply and the internal power supply is determined based on the principle of lowest charging cost, the control module, in controlling the operation of the external power supply and the internal power supply according to the determined current actual output power, is further configured to: The electricity billing rules for the external power source are monitored in real time to determine whether there are any updates to the electricity billing rules. If present, the current actual output power of the external power supply and the internal power supply is re-determined based on the principle of lowest charging cost, and the external power supply and the internal power supply are controlled to operate according to the re-determined current actual output power.

[0018] Optionally, when applied to range-extended electric vehicles, the rapid charging device is also used for: The first maximum output power of the charging pile, the second maximum output power of the range extender, and the maximum charging power of the charging battery inside the range-extended electric vehicle are obtained. The current power allocation strategy for the charging pile and the range extender is determined based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules. Based on the current power allocation strategy, the current actual output power of the charging pile and the range extender are determined respectively, and the charging pile and the range extender are controlled to work according to the determined current actual output power in order to quickly replenish the charging battery.

[0019] This application embodiment also provides a vehicle, including: a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the vehicle is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, the steps of the fast charging method described above are performed.

[0020] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the rapid power replenishment method described above.

[0021] This application provides a method, apparatus, vehicle, and storage medium for rapid power replenishment. The method includes: acquiring a first maximum output power of an external power source, a second maximum output power of an internal power source, and a maximum charging power of a target energy storage object; determining a current power allocation strategy for the external power source and the internal power source based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules; determining the current actual output power of the external power source and the internal power source respectively based on the current power allocation strategy, and controlling the external power source and the internal power source to operate according to the determined current actual output power to rapidly replenish the target energy storage object. Thus, when a target energy storage device needs to be rapidly powered, this application first determines the maximum output power of the external power source and the internal power source, as well as the maximum charging power that the target energy storage device can withstand; then, based on the power of the three and the constraints, it determines the most suitable power allocation strategy; finally, based on the determined power allocation strategy, it determines the current actual output power of the external power source and the internal power source, and controls the external power source and the internal power source to work according to the determined output power, so as to achieve safe and rapid power replenishment of the target energy storage device.

[0022] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A flowchart illustrating a rapid power replenishment method provided in an embodiment of this application; Figure 2 A schematic diagram of a process for predicting and determining charging costs provided in this application; Figure 3 A schematic diagram illustrating the process of determining the current actual output power of the external power supply and the internal power supply based on the principle of lowest charging cost, as provided in this application. Figure 4 Example 1 of an electricity billing rule for an external power source provided in this application; Figure 5 Example 2 of an electricity billing rule for an external power source provided in this application; Figure 6 A schematic diagram illustrating the power redistribution results provided for this application; Figure 7 This application also provides a schematic diagram of the structure of a range-extended electric vehicle; Figure 8 This is one of the structural schematic diagrams of a fast power replenishment device provided in the embodiments of this application; Figure 9 This is a second schematic diagram of the structure of a fast power replenishment device provided in an embodiment of this application; Figure 10 This is a structural schematic diagram of a vehicle provided in an embodiment of this application. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. Based on the embodiments of this application, every other embodiment obtained by those skilled in the art without inventive effort falls within the scope of protection of this application.

[0026] First, the applicable application scenarios of this application are introduced. This application can be applied to a carrier that includes a target energy storage object and an internal power source, and the target energy storage object can be replenished with power by an external power source and / or an internal power source. For example, the carrier can be a range-extended electric vehicle.

[0027] Research has found that with the popularization of new energy vehicles, range-extended electric vehicles (REEVs) have become an important market choice due to their advantages of "pure electric drive and no range anxiety." Their energy replenishment methods mainly include obtaining external grid power through charging stations and generating electricity by consuming fuel through an onboard range extender. Currently, technological developments in the charging process mainly focus on optimizing single charging modes, but existing solutions still have significant shortcomings in complex real-world application scenarios. For example, users have an urgent need for rapid power replenishment in certain specific scenarios (such as during long-distance travel or at public charging stations). However, traditional AC slow charging stations, due to their power limitations, charge too slowly to meet rapid energy replenishment requirements. Although DC fast charging stations can provide higher power, their actual charging capacity is often limited by factors such as the rated power of the charging station itself, grid load, multiple vehicles sharing a power pool, or equipment aging, resulting in their output power not reaching the maximum charging power that the vehicle's battery pack can accept. In this case, the vehicle's high charging capacity is constrained by external conditions, causing unnecessary extensions in charging time and a decline in user experience.

[0028] In conclusion, existing range-extended electric vehicles urgently need an innovative method for rapid charging that can achieve safe and fast charging.

[0029] Based on this, embodiments of this application provide a method, apparatus, vehicle, and storage medium for rapid power replenishment, so as to achieve safe and rapid power replenishment.

[0030] Please see Figure 1 , Figure 1 This is a flowchart illustrating a rapid power replenishment method provided in an embodiment of this application. Figure 1 As shown in the embodiments of this application, the fast power replenishment method includes: S101. Obtain the first maximum output power of the external power source, the second maximum output power of the internal power source, and the maximum charging power of the target energy storage object.

[0031] S102. Determine the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and the preset constraint rules.

[0032] S103. Based on the current power allocation strategy, determine the current actual output power of the external power supply and the internal power supply respectively, and control the external power supply and the internal power supply to work according to the determined current actual output power, so as to quickly replenish the target energy storage object.

[0033] The exemplary steps of the embodiments of this application are described below: In one embodiment provided in this application, prior to executing step S101, the rapid power replenishment method further includes: real-time identification of whether the user has issued a rapid power replenishment command; and when a rapid power replenishment command sent by the user is received, step S101 is executed.

[0034] Here, the quick charging command can be issued by the user by clicking virtual buttons such as "Quick Charging" or "Charging Mode" on the user interaction interface such as the vehicle screen, mobile APP, or instrument panel menu.

[0035] When the target object to be quickly charged is the rechargeable battery in a range-extended electric vehicle, the quick charge command can first be sent to the cockpit domain controller in the range-extended electric vehicle, and then the cockpit domain controller sends the quick charge command to the power controller via the CAN bus, and the power controller executes step S101.

[0036] In addition, it should be noted that before executing step S101, the carrier of the target energy storage object that needs to be quickly recharged is already connected to the external power source and can perform the normal charging process, that is, the external charging process.

[0037] For step S101, this step specifically includes: obtaining the maximum output power that the external power source can currently provide, i.e., obtaining the first maximum output power; obtaining the maximum output power that the internal power source can currently provide, i.e., obtaining the second maximum output power; and obtaining the maximum charging power that the target energy storage object can currently receive.

[0038] Here, both the internal power source and the target energy storage object are located inside the target carrier.

[0039] For example, when the target vehicle is a range-extended electric vehicle, the internal power source can be a range extender, the target energy storage object can be the rechargeable battery included in the range-extended electric vehicle, and the external power source can be a charging pile. Therefore, step S101 can specifically be: obtaining the first maximum output power of the charging pile, the second maximum output power of the range extender, and the maximum charging power of the rechargeable battery in the range-extended electric vehicle.

[0040] Here, the current maximum output power of the charging pile can be determined based on the type and status information of the charging pile. The type of charging pile can include slow charging and fast charging; when the type of charging pile is slow charging, the maximum output power of the charging pile can be determined by the power controller and power management system through hard-wired signals to identify the type and status of the charging pile.

[0041] The maximum output power of the range extender depends on the current state of the engine, generator, and related components in the vehicle.

[0042] The current maximum charging power of the rechargeable battery can be determined by the battery management system based on the current state data of the battery.

[0043] Regarding step S102, the preset constraint rule is a preset rule that determines different power allocation strategies based on different situations of the first maximum output power, the second maximum output power, and the maximum charging power.

[0044] The principle behind setting the preset constraint rules is to ensure that the battery can operate safely when it is being charged at maximum power.

[0045] When it is necessary to recharge the battery in a range-extended electric vehicle, the specific steps may be as follows: determine the current power allocation strategy of the charging pile and the range extender based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules.

[0046] For example, this application provides two different power allocation strategies: In one embodiment provided in this application, determining the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules includes: determining whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; if not, determining the first maximum output power as the current actual output power of the external power supply, and determining the second maximum output power as the current actual output power of the internal power supply.

[0047] Here, if the sum of the first and second maximum output powers is determined to be no greater than the maximum charging power, it indicates that the target energy storage device can still operate safely when receiving power from two power sources simultaneously at their maximum output power. Therefore, to replenish the power as quickly as possible, both the external and internal power sources can be configured to operate at their maximum output power.

[0048] In another embodiment provided in this application, the step of determining the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules includes: determining whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; if it is greater, determining the current actual output power of the external power supply and the internal power supply according to the principle of lowest charging cost.

[0049] Here, if the sum of the first and second maximum output powers is greater than the maximum charging power, it indicates that the target energy storage device cannot operate safely when receiving power from two sources simultaneously at their maximum output power. Therefore, in this case, power reallocation is required, and the rule for power allocation can be based on the principle of minimizing charging costs.

[0050] Furthermore, in one embodiment provided in this application, determining the current actual output power of the external power supply and the internal power supply according to the principle of lowest charging cost includes: S1021. Determine the power margin based on the difference between the sum of the first maximum output power and the second maximum output power and the maximum charging power.

[0051] S1022. Determine the traversal step size based on the power margin and the preset traversal step number.

[0052] S1023. During each traversal, the first current candidate output power of the external power supply is determined based on the first initial power, the current traversal step number, and the traversal step size. The second current candidate output power of the internal power supply is determined based on the second initial power and the current candidate output power of the external power supply.

[0053] S1024. Determine the predicted charging cost for this traversal based on the first current candidate output power of the external power supply and its corresponding electricity billing rule, the current candidate output power of the internal power supply and its corresponding electricity billing rule.

[0054] S1025. The first current candidate output power corresponding to the minimum predicted charging cost is determined as the current actual output power of the external power supply, and the second current candidate output power corresponding to the minimum predicted charging cost is determined as the current actual output power of the internal power supply.

[0055] Specifically, step S1021 may include: using the first maximum output power ( ) and second maximum output power ( Add the values ​​together to determine the total output power; subtract the maximum charging power from the total output power. The difference after () is determined as the power margin () ).

[0056] Specifically, step S1022 may include: utilizing the power margin ( The value obtained by dividing the number of traversal steps (N) by the preset number of traversal steps is determined as the traversal step size (step).

[0057] Regarding step S1023, here, the first initial power ( According to the first maximum output power ( ) and power margin ( ) Determined, specifically can be ,in .

[0058] Second initial power ( According to the maximum charging power ( ) Determined, specifically can be .

[0059] Regarding step S1023, the step of determining the first initial power ( ), current traversal step number ( i ) and traversal step size step, to determine the first current candidate output power of the external power supply ( Specifically, it can be: ,Right now .

[0060] The step of determining the second current candidate output power of the internal power supply based on the second initial power and the current candidate output power of the external power supply can specifically be as follows: ,Right now .

[0061] Specifically, step S1024 may include: determining a first charging cost required for charging using the external power source based on the first current candidate output power of the external power source and its corresponding electricity billing rules; determining a second charging cost required for charging using the internal power source based on the current candidate output power of the internal power source and its corresponding electricity billing rules; and determining the sum of the first charging cost and the second charging cost as the predicted charging cost for this iteration.

[0062] For an example, please refer to Figure 2 , Figure 2 This application provides a schematic diagram of a process for predicting and determining charging costs. Figure 2 As shown in the figure, the straight line in the left figure represents the electricity billing rule for external power supply (fixed cost), and the curve in the right figure represents the electricity billing rule for internal power supply (the cost of supplementing power per unit of energy varies with power). The area S1 represents the external power supply with the current candidate output power ( The cost required to charge the target energy storage object, and area S2 represents the internal power supply at the current candidate output power ( The cost required to charge the target energy storage object, i.e., the predicted charging cost determined in this traversal, is S1+S2. Specifically, determining the current actual output power of the external power source and the internal power source based on the principle of minimizing charging costs actually requires finding... , The method that minimizes the value of S1+S2 is the lowest-cost method for allocating supplementary power.

[0063] For step S1025, this step may specifically include: selecting the minimum value from the determined N predicted charging costs, and then calculating the value corresponding to the selected minimum value. The current actual output power of the external power supply is determined, and the minimum value corresponding to the selected value is... Determine the current actual output power of the internal power supply.

[0064] The minimum predicted charging cost can also be determined by comparing the predicted charging cost determined in the current traversal with the minimum charging cost determined in the previous traversal after each traversal to determine whether it is the minimum predicted charging cost. In this way, when the traversal reaches the last one, the minimum predicted charging cost can be determined at the same time.

[0065] For an example, please refer to Figure 3 , Figure 3 This application provides a schematic diagram illustrating the process of determining the current actual output power of the external and internal power supplies based on the principle of minimizing charging costs. Figure 3 As shown, it specifically includes: S1, Start; S2, Set the number of steps for traversal. traversal range = Set the traversal step size = / S3, Initialize traversal count Set the first initial power Second initial power ,initialization To minimize the predicted charging cost, For external power supply The unit price for output power during operation. For internal power supply The unit price for output power during operation; S4, the i Second traversal, set , , ; For the first i The predicted charging cost is determined in the second iteration; S5, determine If yes, proceed to step S6; otherwise, proceed to step S7. S6: Record. , , S7 S8, Confirm If yes, proceed to step S9; otherwise, return to step S4. S9, End.

[0066] For step S103, this step specifically includes: determining the current actual output power of the external power supply and the current actual output power of the internal power supply according to the determined current power allocation strategy; and then controlling the external power supply and the internal power supply to work according to their respective determined current actual output power in order to quickly replenish the target energy storage object.

[0067] Here, when the target energy storage object is the rechargeable battery of a range-extended electric vehicle, this step may specifically involve determining the current actual output power of the charging pile and the range extender according to the current power allocation strategy, and controlling the charging pile and the range extender to work according to the determined current actual output power in order to quickly replenish the rechargeable battery.

[0068] In addition, the electricity billing rules for external power sources may vary depending on the charging time, and therefore may change during the replenishment of the target energy storage object.

[0069] For an example, please refer to Figure 4 , Figure 5 , Figure 4 Example 1 of an electricity billing rule for an external power source provided in this application. Figure 5 Example 2 of an external power supply billing rule provided for this application. As shown in the figure, there may be two situations regarding the external power supply billing rule: 1. The billing rule changes with power (e.g., Figure 4 As shown), power reallocation is not required at this time. 2. Electricity billing rules change over time (e.g. Figure 5 As shown in the figure, power redistribution is required at this point.

[0070] In order to ensure Figure 5 Even in the event of an accident, the charging cost can still be minimized. In one embodiment provided in this application, when the current actual output power of the external power supply and the internal power supply is determined according to the principle of minimizing charging cost, and the external power supply and the internal power supply are controlled to operate according to the determined current actual output power, the rapid charging method further includes: real-time monitoring of the electricity billing rules of the external power supply to determine whether there is an update to the electricity billing rules; if so, re-determining the current actual output power of the external power supply and the internal power supply based on the principle of minimizing charging cost, and controlling the external power supply and the internal power supply to operate according to the re-determined current actual output power.

[0071] For an example, please refer to Figure 6 , Figure 6A schematic diagram illustrating the power redistribution results provided in this application. (See diagram below.) Figure 6 As shown, when the electricity billing rules for the external power supply change, and the current actual output power of the external power supply and the internal power supply is determined based on the principle of the lowest charging cost, it is necessary to re-determine the current actual output power of the external power supply and the internal power supply to ensure the lowest charging cost.

[0072] In addition, please see Figure 7 , Figure 7 This application also provides a structural schematic of a range-extended electric vehicle. (Through...) Figure 7 This application explains the principle of coordinated operation between various components during the rapid power replenishment process. For example... Figure 7 As shown, MDCU is the power controller, IDCU is the cockpit domain controller, PMS is the power management system, BMS is the battery management system, GCU is the generator controller, and EMS is the engine management system. The charging station uses slow charging. During rapid charging, the process includes: MDCU hard-wired detection of user charging needs (plugging in, swiping a card, etc.); MDCU, in coordination with PMS and BMS via CAN2, initiating the normal charging process; user requesting rapid charging via UI operation; IDCU sending the rapid charging request to MDCU via CAN1; MDCU, in coordination with GCU and EMS via CAN2, controlling the range extender to start and generate electricity; MDCU and PMS jointly identify the charging station type and status via hard-wired signals and calculate the maximum output power of the charging station. The data is then aggregated into the MDCU; the MDCU uses CAN2 to monitor the status of the engine, generator, and related components, and calculates the maximum output power of the range extender. The BMS detects the current state of the battery system and calculates the maximum charging power of the battery. And send it to MDCU via CAN2; MDCU controls the output power of the charging gun by sending commands to PMS, and controls the output power of the range extender by sending commands to GCU and EMS; if + ≤ Then the power of the charging pile is controlled as follows: Control the power of the range extender to ;if + ≥ Therefore, based on the principle of economic efficiency (the principle of lowest charging cost), They are allocated to charging stations and range extenders.

[0073] Thus, when a target energy storage device needs to be rapidly powered, this application first determines the maximum output power of the external power source and the internal power source, as well as the maximum charging power that the target energy storage device can withstand; then, based on the power of the three and the constraints, it determines the most suitable power allocation strategy; finally, based on the determined power allocation strategy, it determines the current actual output power of the external power source and the internal power source, and controls the external power source and the internal power source to work according to the determined output power, so as to achieve safe and rapid power replenishment of the target energy storage device.

[0074] Based on the same inventive concept, this application also provides a fast power replenishment device corresponding to the fast power replenishment method. Since the principle of the device in this application is similar to the fast power replenishment method described above in this application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be described again.

[0075] Please see Figure 8 , Figure 9 , Figure 8 This is one of the structural schematic diagrams of a fast power replenishment device provided in the embodiments of this application. Figure 9 This is a second schematic diagram of a fast power replenishment device provided in an embodiment of this application. Figure 8 As shown, the rapid power replenishment device 800 includes: The acquisition module 810 is used to acquire the first maximum output power of the external power supply, the second maximum output power of the internal power supply, and the maximum charging power of the target energy storage object. The determination module 820 is used to determine the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power and the preset constraint rules. The control module 830 is used to determine the current actual output power of the external power supply and the internal power supply respectively according to the current power allocation strategy, and control the external power supply and the internal power supply to work according to the determined current actual output power, so as to quickly replenish the target energy storage object.

[0076] Optionally, when determining the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules, the determining module 820 is used to: Determine whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; If the output power is not greater than the specified value, the first maximum output power is determined as the current actual output power of the external power supply, and the second maximum output power is determined as the current actual output power of the internal power supply.

[0077] Optionally, when determining the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules, the determining module 820 is used to: Determine whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; If it is greater than the specified value, the current actual output power of the external power supply and the internal power supply shall be determined according to the principle of lowest charging cost.

[0078] Optionally, when determining the current actual output power of the external power supply and the internal power supply according to the principle of lowest charging cost, the determining module 820 is used to: The power margin is determined based on the difference between the sum of the first maximum output power and the second maximum output power and the maximum charging power. The traversal step size is determined based on the power margin and the preset number of traversal steps. During each traversal, the first current candidate output power of the external power supply is determined based on the first initial power, the current traversal step number, and the traversal step size. The second current candidate output power of the internal power supply is determined based on the second initial power and the current candidate output power of the external power supply. The first initial power is determined based on the first maximum output power and the power margin, and the second initial power is determined based on the maximum charging power. Based on the first current candidate output power of the external power source and its corresponding electricity billing rules, and the current candidate output power of the internal power source and its corresponding electricity billing rules, the predicted charging cost for this traversal is determined. The first current candidate output power corresponding to the minimum predicted charging cost is determined as the current actual output power of the external power supply, and the second current candidate output power corresponding to the minimum predicted charging cost is determined as the current actual output power of the internal power supply.

[0079] Optional, as shown on the right Figure 9 As shown, the rapid power replenishment device 800 further includes an identification module 840, which is used for: Before acquiring the first maximum output power of the external power source, the second maximum output power of the internal power source, and the maximum charging power of the target energy storage object, the system identifies in real time whether the user has issued a rapid power replenishment command.

[0080] Optionally, when the current actual output power of the external power supply and the internal power supply is determined based on the principle of lowest charging cost, when the control module 830 controls the external power supply and the internal power supply to operate according to the determined current actual output power, the control module 830 is further configured to: The electricity billing rules for the external power source are monitored in real time to determine whether there are any updates to the electricity billing rules. If present, the current actual output power of the external power supply and the internal power supply is re-determined based on the principle of lowest charging cost, and the external power supply and the internal power supply are controlled to operate according to the re-determined current actual output power.

[0081] Optionally, when applied to range-extended electric vehicles, the rapid charging device 800 is further used for: The first maximum output power of the charging pile, the second maximum output power of the range extender, and the maximum charging power of the charging battery inside the range-extended electric vehicle are obtained. The current power allocation strategy for the charging pile and the range extender is determined based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules. Based on the current power allocation strategy, the current actual output power of the charging pile and the range extender are determined respectively, and the charging pile and the range extender are controlled to work according to the determined current actual output power in order to quickly replenish the charging battery. Please see Figure 10 , Figure 10 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application. Figure 10 As shown, the vehicle 1000 includes a processor 1010, a memory 1020, and a bus 1030.

[0082] The memory 1020 stores machine-readable instructions executable by the processor 1010. When the vehicle 1000 is running, the processor 1010 communicates with the memory 1020 via the bus 1030. When the machine-readable instructions are executed by the processor 1010, they can perform the operations described above. Figures 1 to 7 The steps in the method embodiment shown are specifically implemented in the method embodiment and will not be repeated here.

[0083] 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. Figures 1 to 7 The steps in the method embodiment shown are specifically implemented in the method embodiment and will not be repeated here.

[0084] 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.

[0085] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0086] 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.

[0087] In addition, 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.

[0088] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, 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 a portion 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 described in 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.

[0089] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, 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, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rapid power replenishment method, characterized in that, The rapid power replenishment method includes: Obtain the first maximum output power of the external power source, the second maximum output power of the internal power source, and the maximum charging power of the target energy storage object; Based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules, the current power allocation strategy of the external power supply and the internal power supply is determined; specifically, it includes: determining whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; if it is greater, the current actual output power of the external power supply and the internal power supply is determined according to the principle of lowest charging cost; The step of determining the current actual output power of the external power supply and the internal power supply according to the principle of minimum charging cost includes: determining a power margin based on the difference between the sum of the first maximum output power and the second maximum output power and the maximum charging power; determining a traversal step size based on the power margin and a preset traversal step number; determining a first current candidate output power of the external power supply based on a first initial power, the current traversal step number, and the traversal step size during each traversal, and determining a second current candidate output power of the internal power supply based on a second initial power and the current candidate output power of the external power supply; wherein the first initial power is determined based on the first maximum output power and the power margin, and the second initial power is determined based on the maximum charging power; determining the predicted charging cost for this traversal based on the first current candidate output power of the external power supply and its corresponding electricity billing rules, and the current candidate output power of the internal power supply and its corresponding electricity billing rules; determining the first current candidate output power corresponding to the minimum predicted charging cost as the current actual output power of the external power supply, and determining the second current candidate output power corresponding to the minimum predicted charging cost as the current actual output power of the internal power supply; Based on the current power allocation strategy, the current actual output power of the external power supply and the internal power supply are determined respectively, and the external power supply and the internal power supply are controlled to work according to the determined current actual output power in order to quickly replenish the target energy storage object.

2. The rapid power replenishment method according to claim 1, characterized in that, The step of determining the current power allocation strategy for the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules includes: Determine whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; If the output power is not greater than the specified value, the first maximum output power is determined as the current actual output power of the external power supply, and the second maximum output power is determined as the current actual output power of the internal power supply.

3. The rapid power replenishment method according to claim 1, characterized in that, Before acquiring the first maximum output power of the external power source, the second maximum output power of the internal power source, and the maximum charging power of the target energy storage object, the rapid power replenishment method further includes: It can identify in real time whether the user issues a rapid power replenishment command.

4. The rapid power replenishment method according to claim 1, characterized in that, When the current actual output power of the external power supply and the internal power supply is determined according to the principle of lowest charging cost, and the external power supply and the internal power supply are controlled to operate according to the determined current actual output power, the rapid power replenishment method further includes: The electricity billing rules for the external power source are monitored in real time to determine whether there are any updates to the electricity billing rules. If present, the current actual output power of the external power supply and the internal power supply is re-determined based on the principle of lowest charging cost, and the external power supply and the internal power supply are controlled to operate according to the re-determined current actual output power.

5. The rapid power replenishment method according to claim 1, characterized in that, The rapid charging method, applied to range-extended electric vehicles, includes: The first maximum output power of the charging pile, the second maximum output power of the range extender, and the maximum charging power of the charging battery inside the range-extended electric vehicle are obtained. The current power allocation strategy for the charging pile and the range extender is determined based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules. Based on the current power allocation strategy, the current actual output power of the charging pile and the range extender are determined respectively, and the charging pile and the range extender are controlled to work according to the determined current actual output power in order to quickly replenish the charging battery.

6. A rapid power replenishment device, characterized in that, The rapid power replenishment device includes: The acquisition module is used to acquire the first maximum output power of the external power supply, the second maximum output power of the internal power supply, and the maximum charging power of the target energy storage object. The determining module is configured to determine the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules. When determining the current power allocation strategy of the external power supply and the internal power supply based on the first maximum output power, the second maximum output power, the maximum charging power, and preset constraint rules, the determining module is configured to: determine whether the sum of the first maximum output power and the second maximum output power is greater than the maximum charging power; if it is greater, determine the current actual output power of the external power supply and the internal power supply according to the principle of lowest charging cost. When determining the current actual output power of the external power supply and the internal power supply according to the principle of lowest charging cost, the determining module is configured to: determine a power margin based on the difference between the sum of the first maximum output power and the second maximum output power and the maximum charging power; determine a traversal step size based on the power margin and a preset traversal step number; at each traversal, determine a first current candidate output power of the external power supply based on a first initial power, the current traversal step number, and the traversal step size, and determine a second current candidate output power of the internal power supply based on a second initial power and the current candidate output power of the external power supply; wherein the first initial power is determined based on the first maximum output power and the power margin, and the second initial power is determined based on the maximum charging power; determine the predicted charging cost for this traversal based on the first current candidate output power of the external power supply and its corresponding electricity billing rules, and the current candidate output power of the internal power supply and its corresponding electricity billing rules; determine the first current candidate output power corresponding to the minimum predicted charging cost as the current actual output power of the external power supply, and determine the second current candidate output power corresponding to the minimum predicted charging cost as the current actual output power of the internal power supply; The control module is used to determine the current actual output power of the external power supply and the internal power supply according to the current power allocation strategy, and control the external power supply and the internal power supply to work according to the determined current actual output power, so as to quickly replenish the target energy storage object.

7. A vehicle, characterized in that, include: The system includes a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the vehicle is in operation, the processor communicates with the memory via the bus. The machine-readable instructions are executed by the processor to perform the steps of the fast charging method as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps of the fast power replenishment method as described in any one of claims 1 to 5.

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