Charging method, device, equipment and medium for forklift of factory

Abstract

The application discloses a charging method, device, equipment and medium for electric forklifts in a factory, and belongs to the technical field of new energy. The method comprises the following steps: acquiring, at a current time, a demand power of a production line of the factory at a next time and a maximum power that can be provided by the factory; if the demand power is less than the maximum power, determining an available charging power of the electric forklift according to a difference between the maximum power and the demand power, the available charging power being less than or equal to the difference and being positively correlated with the difference; and controlling an actual total charging power of all charging forklifts to be less than or equal to the available charging power, the charging forklift being an electric forklift in a charging state. The method can limit the actual total charging power of all charging forklifts according to the demand power of the production line of the factory, so that the sum of the demand power and the actual total charging power is less than the maximum power that can be provided by the factory, the total line instantaneous current of the factory will not be overlimited, and the continuous and safe power utilization of the whole factory is ensured.

Description

Technical Field

[0001] This application relates to the field of energy technology, and in particular to a charging method, apparatus, equipment and medium for electric forklifts used in factories. Background Technology

[0002] Electric forklifts are material handling equipment that uses batteries as a power source to convert chemical energy into electrical energy. The charging problem of electric forklifts has gradually become a key concern.

[0003] In the prior art, when the battery of an electric forklift used in a factory is low, a charger converts the high-voltage AC power in the factory's power grid into DC power to charge the electric forklift's battery.

[0004] However, when a large number of electric forklifts are charging at the same time, it can cause an excessive instantaneous current in the factory's total incoming line, resulting in a power outage and shutdown of production equipment. Summary of the Invention

[0005] In view of the above problems, this application is made to provide a charging method, apparatus, equipment and medium for electric forklifts in factories that solves the above problems. It can limit the actual total charging power of all forklifts that are charging according to the power demand of the factory's production line, so that the sum of the demand power and the actual total charging power is less than the maximum power that the factory can provide, so that the instantaneous current of the factory's total incoming line will not exceed the limit, thereby ensuring continuous and safe power use for the entire factory and improving the operating efficiency of production equipment.

[0006] In a first aspect, this application provides a charging method for an electric forklift used in a factory, the method comprising: The power demand of the factory's production line at the current moment and the maximum power that the factory can provide at the next moment are obtained. If the required power is less than the maximum power, the available charging power of the electric forklift is determined based on the difference between the maximum power and the required power. The available charging power is less than or equal to the difference and is positively correlated with the difference. The actual total charging power of all forklifts that are charging is controlled to be less than or equal to the available charging power, wherein the forklifts that are charging are electric forklifts that are in a charging state.

[0007] Optionally, obtaining the power demand of the factory's production line at the next moment includes: Obtain the historical power of the factory's production line at each moment within a set time period, wherein the end time of the set time period is the current moment; Based on all historical power data, determine the power demand of the factory's production lines at the next moment.

[0008] Optionally, determining the power demand of the factory's production line at the next moment based on all historical power data includes: Based on all the historical power, determine the rate of change of power at the current moment; Based on the power change rate and the current power at the current moment, determine the power demand of the factory's production line at the next moment.

[0009] Optionally, controlling the actual total charging power of all positively charging forklifts to be less than or equal to the available charging power includes: Obtain the remaining battery power and charging time for each forklift that is currently charging; Based on the remaining battery power and the charging time of each forklift that is charging, a charging priority coefficient is determined for each forklift that is charging, and the sum of all charging priority coefficients is less than or equal to 1. The product of the charging priority coefficient of each positively charging forklift and the available charging power is determined as the single-vehicle charging power of each positively charging forklift, so that the actual total charging power of all positively charging forklifts is less than or equal to the available charging power. The actual total charging power is the sum of the charging power of all individual vehicles.

[0010] Optionally, after controlling the actual total charging power of all positively charging forklifts to be less than or equal to the available charging power, the method further includes: The communication status of the charger in the charging state is obtained, including communication failure status and communication normal status, and the charger is used to charge the electric forklift. If the communication status is the communication failure status, then obtain the number of each target charging forklift. Different electric forklifts have different numbers. The target charging forklift is the charging forklift that is charging on the charger in the communication failure status. Based on the number of each target forklift that is charging, the delay duration of the charger corresponding to each target forklift is determined, and the output power of the charger is reduced after the corresponding delay duration begins when the charger is in the communication failure state.

[0011] Optionally, determining the available charging power of the electric forklift based on the difference between the maximum power and the required power includes: Obtain the power safety margin of the factory; Calculate the difference between the maximum power and the required power to obtain the idle power; If the idle power is greater than the power safety margin, the difference between the idle power and the power safety margin is determined as the available charging power of the electric forklift.

[0012] Optionally, after obtaining the power demand of the factory production line at the next moment and the maximum power that the factory can provide, the method further includes: If the required power is greater than or equal to the maximum power, the electric forklift is not allowed to charge.

[0013] Secondly, this application provides a charging device for an electric forklift used in a factory, the device comprising: The acquisition module is used to acquire the power demand of the factory's production line in the next moment, as well as the maximum power that the factory can provide; The determination module is used to determine the available charging power of the electric forklift based on the difference between the maximum power and the required power if the required power is less than the maximum power. The available charging power is less than or equal to the difference and is positively correlated with the difference. The first control module is used to control the actual total charging power of all positively charging forklifts to be less than or equal to the available charging power, wherein the positively charging forklifts are electric forklifts in a charging state.

[0014] Thirdly, this application provides an electronic device, including: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the method as described in the first aspect.

[0015] Fourthly, this application provides a computer-readable storage medium storing computer instructions for causing the computer to perform the method described in the first aspect.

[0016] The technical solutions provided in this application embodiment have at least the following technical effects or advantages: This application provides a charging method, apparatus, equipment, and medium for electric forklifts in a factory. It first obtains the power demand of the factory's production line for the next moment, as well as the maximum power the factory can provide. If the demand power is less than the maximum power, it indicates that the factory has spare power to charge the electric forklifts. Then, based on the difference between the maximum power and the demand power, the available charging power for the electric forklifts is determined. The available charging power is less than or equal to the difference and is positively correlated with it. The actual total charging power of all charging forklifts is controlled to be less than or equal to the available charging power, preventing the total power of the charging forklifts and the production line from exceeding the factory's maximum power, thus ensuring that the factory's total incoming instantaneous current does not exceed limits and guaranteeing continuous and safe power supply throughout the factory, thereby improving the operating efficiency of production equipment. The charging forklifts are electric forklifts in a charging state.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a flowchart of a charging method for an electric forklift used in a factory, provided in an embodiment of this application; Figure 2 This is a structural block diagram of a charging device for an electric forklift used in a factory, provided in an embodiment of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. It should be understood that the embodiments of this disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. Unless otherwise specified, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0020] Figure 1 This is a flowchart illustrating a charging method for an electric forklift used in a factory, as provided in an embodiment of this application. Figure 1 As shown, the method includes: Step S110: Obtain the power demand of the factory's production line at the current moment and the maximum power that the factory can provide at the next moment.

[0021] In this embodiment, the power demand at the next moment is not real, but predicted. The time difference between the next moment and the current moment can be set according to the actual situation.

[0022] The maximum power that the factory can provide is the maximum load that the factory can withstand. It can be the rated power of the factory's total transformer or a value less than that rated power. The specific value can be set according to the actual situation.

[0023] Step S120: If the required power is less than the maximum power, then determine the available charging power of the electric forklift based on the difference between the maximum power and the required power.

[0024] Among them, the available charging power is less than or equal to the difference and is positively correlated with the difference.

[0025] In this embodiment, if the required power is less than the maximum power, it means that while the factory is meeting the power requirements of the production line, there is still spare power available for charging the electric forklift. The difference between the maximum power and the required power is the spare power, and the portion of the spare power that can be used to charge the electric forklift is the available charging power.

[0026] Step S130: Control the actual total charging power of all positively charging forklifts to be less than or equal to the available charging power.

[0027] Among them, a positive charging forklift is an electric forklift that is in the charging state.

[0028] In this embodiment of the application, in order to ensure that the instantaneous total current of the factory transformer does not exceed the standard, it is necessary to control the actual total charging power of all forklifts charging to be less than or equal to the available charging power. That is, no matter how many electric forklifts are charging, as long as the actual total charging power of all forklifts charging is not greater than the available charging power, the sum of the power demand of the factory's production line and the actual total charging power of the electric forklifts will not exceed the maximum power that the factory can provide. This will ensure that the instantaneous total current of the factory does not exceed the standard, guarantee the continuous and safe use of electricity throughout the factory, and improve the operating efficiency of the production equipment.

[0029] It should be noted that since the power demand of the production line may vary, the available charging power will also change with the power demand. This makes the available charging power of the electric forklift dynamic, which not only makes full use of the factory's idle power when the power demand is low, but also ensures that the factory's instantaneous total current does not exceed the standard when the power demand is high.

[0030] Optionally, step S110 includes: Step S1101: Obtain the historical power of the factory production line at each moment within the set time period.

[0031] The end time of the set time period is the current time.

[0032] This can be understood as detecting the historical power (historical load) of the production line over a period of time.

[0033] Step S1102: Based on all historical power data, determine the power demand of the factory production line at the next moment.

[0034] In this embodiment of the application, historical power can reflect the load situation of the production line over a period of time. Then, based on the past load situation, the subsequent load situation can be predicted, that is, the power demand at the next moment can be predicted.

[0035] Optionally, step S1102 includes: Based on all historical power data, determine the power change rate at the current moment; based on the power change rate and the current power at the current moment, determine the power demand of the factory production line at the next moment.

[0036] In this embodiment of the application, all historical power can be curve fitted, with the horizontal axis of the curve representing time, the vertical axis representing historical power, the slope of the curve representing the rate of power change, and the slope of the curve corresponding to the current moment representing the rate of power change at the current moment.

[0037] Next, the power demand of the factory production line at the next moment is calculated according to formula (1), which is as follows: P 需求 = P 当前 +k×t; In the formula, k represents the rate of change of power, and P 当前 P represents the current power. 需求 Let t represent the required power, and t represent the time difference between the current moment and the next moment.

[0038] Optionally, step S120 includes: The first step is to obtain the factory's power safety margin.

[0039] In this embodiment, the power safety margin is preset to ensure the safe and stable operation of the factory power system and to guarantee the power supply quality.

[0040] The second step is to calculate the difference between the maximum power and the required power to obtain the idle power.

[0041] In this embodiment of the application, idle power refers to the amount of usable power in the factory after deducting the power required by the production line.

[0042] The third step is to determine the available charging power of the electric forklift if the idle power is greater than the power safety margin.

[0043] In the embodiments of this application, if the idle power is greater than the power safety margin, it means that there is still excess idle power after removing the power safety margin. This excess idle power is used as the available charging power for charging the electric forklift.

[0044] In this embodiment of the application, if the idle power is less than or equal to the power safety margin, the available charging power of the electric forklift is 0, that is, the electric forklift is not allowed to charge.

[0045] Optionally, after step S110, the method further includes: Electric forklifts are not allowed to charge if the required power is greater than or equal to the maximum power.

[0046] In this embodiment of the application, if the required power is greater than or equal to the maximum power, it means that the maximum power that the factory can provide is no longer able to meet the needs of the production line. Therefore, charging of electric forklifts is not allowed to avoid excessive load on the factory caused by charging of electric forklifts and excessive instantaneous current in the total incoming line.

[0047] Optionally, step S130 includes: Step S1301: Obtain the remaining battery power and charging time for each forklift that is currently charging.

[0048] In this embodiment of the application, the remaining battery power and charging time of the forklift being charged are counted in real time.

[0049] Step S1302: Determine the charging priority coefficient of each forklift based on its remaining battery power and charging time.

[0050] Among them, the sum of all charging priority coefficients is less than or equal to 1.

[0051] In this embodiment of the application, a charging priority is assigned to each forklift that is charging. Forklifts with higher charging priority can be charged first. The charging priority can be determined based on the remaining power and the charging time.

[0052] Specifically, for each forklift currently charging, a weight is assigned to the remaining battery power and the waiting time for charging. Then, the remaining battery power and the charging time are weighted and summed to obtain a charging priority score. Next, the sum of the charging priority scores of all forklifts currently charging is calculated to obtain a total score. The ratio of each charging priority score to the total score is used as the charging priority coefficient for each forklift currently charging. At this point, the sum of all charging priority coefficients is 1.

[0053] The charging priority score can be calculated using formula (2), which is as follows: S i =[W1×(1-SOC i )] + (W2× T 等待 ); In the formula, S i Let W1 represent the charging priority score of the i-th forklift that is currently charging, and SOC represent the weight of the remaining battery power. i T represents the remaining battery power of the i-th forklift that is currently charging, W2 represents the weight of the charging time, and T represents the remaining battery power of the forklift that is currently charging. i This represents the charging time of the i-th forklift that is currently charging.

[0054] In this embodiment, the weights of remaining battery power and long charging time can be set according to actual conditions. Generally, if W1 is set larger, the available charging power will be tilted towards the forklift with the lowest battery power that is currently charging; if W2 is set larger, it will be more inclined to give priority to the forklift that arrives first and is currently charging.

[0055] Step S1303: Multiply the charging priority coefficient of each positive charging forklift by the available charging power to determine the single-vehicle charging power of each positive charging forklift, so that the actual total charging power of all positive charging forklifts is less than or equal to the available charging power.

[0056] The actual total charging power is the sum of the charging power of all individual vehicles.

[0057] In this embodiment, the available charging power is allocated to each charging difference according to the charging priority coefficient. The higher the charging priority coefficient, the greater the allocated charging power. Finally, all available charging power is used to charge the forklift in the positive charging stage, making full use of the factory's idle power and improving charging efficiency.

[0058] It should be noted that when the sum of all charging priority coefficients is 1, the actual total charging power of all forklifts charging is equal to the available charging power.

[0059] Optionally, after step S130, the method further includes: Step S140: Obtain the communication status of the charger that is in the charging state.

[0060] The communication status includes communication failure status and communication normal status. The charger is used to charge the forklift that is currently charging.

[0061] In this embodiment of the application, the communication status of the charger directly affects the charging safety, so it is necessary to obtain the communication status of the charger that is charging normally in real time.

[0062] Step S150: If the communication status is a communication failure status, obtain the number of each target charging forklift. Different electric forklifts have different numbers.

[0063] Among them, the target positive charging forklift is a positive charging forklift that is charging on a charger that is in a communication failure state.

[0064] In this embodiment of the application, when the charger communication fails, it is necessary to perform a protection action. This requires obtaining the number of each target forklift that is charging and determining how to perform the protection action based on these numbers.

[0065] Step S160: Based on the number of each target charging forklift, determine the delay time of the charger corresponding to each target charging forklift, and reduce the output power of the charger after the corresponding delay time has elapsed since the charger is in a communication failure state.

[0066] In this embodiment, the protection action involves controlling the charger to stop charging the forklift. However, if multiple high-power forklifts stop charging simultaneously, a reverse voltage surge can occur. Therefore, based on their numbers, the forklifts are controlled to stop charging in batches, gradually reducing the total output power of all chargers.

[0067] Specifically, a base number is determined based on the total number of target charging forklifts. The remainder obtained by dividing the number of each target charging forklift by the base number is used as the initial duration. The initial duration is then multiplied by a preset standard duration to obtain the delay duration. The base number is positively correlated with the total number.

[0068] For example, there are 50 target positive charging forklifts, with a base number set to 10; and 20 target positive charging forklifts, with a base number set to 4. If there are 50 target positive charging forklifts, with a base number set to 10, and a standard duration of 0.5 seconds, the delay duration for the target positive charging forklift numbered 11 is (11 mod 10) × 0.5 = 0.5.

[0069] In this embodiment, reducing the output power of the charger includes: reducing the output power of the charger at a set rate so that the output power decreases uniformly to a safe value, thereby extending the service life of the electrical equipment. The rate can be 20% per second, and the safe value can be 0.

[0070] Based on the same concept, embodiments of the present invention also provide a charging device for electric forklifts in factories. Figure 2 This is a structural block diagram of a charging device for an electric forklift used in a factory, provided in an embodiment of this application. Figure 2 As shown, the device 200 includes an acquisition module 201, a determination module 202, and a control module 203.

[0071] The acquisition module 201 is used to acquire the power demand of the factory's production line in the next moment, as well as the maximum power that the factory can provide; The determination module 202 is used to determine the available charging power of the electric forklift based on the difference between the maximum power and the required power if the required power is less than the maximum power. The available charging power is less than or equal to the difference and is positively correlated with the difference. The first control module 203 is used to control the actual total charging power of all positively charging forklifts to be less than or equal to the available charging power. Positively charging forklifts are electric forklifts that are in the charging state. Optionally, the acquisition module 201 includes: The acquisition unit is used to acquire the historical power of the factory production line at each moment within a set time period, with the end time of the set time period being the current moment. The determination unit is used to determine the power demand of the factory production line at the next moment based on all historical power data.

[0072] Optionally, the determining unit is also used for: Determine the rate of change of power at the current moment based on all historical power data; Based on the power change rate and the current power at the current moment, determine the power demand of the factory production line at the next moment.

[0073] Optionally, the first control module 203 is also used for: Obtain the remaining battery power and charging time for each forklift that is currently charging; Based on the remaining battery power and charging time of each forklift that is currently charging, a charging priority coefficient is determined for each forklift that is currently charging, and the sum of all charging priority coefficients is less than or equal to 1. The charging priority coefficient of each positive charging forklift is multiplied by the available charging power to determine the single-vehicle charging power of each positive charging forklift, so that the actual total charging power of all positive charging forklifts is less than or equal to the available charging power. The actual total charging power is the sum of the charging power of all individual vehicles.

[0074] Optionally, the device 200 also includes a lowering module for: Obtain the communication status of the charger that is in the charging state. The communication status includes communication failure status and communication normal status. The charger is used to charge the electric forklift. If the communication status is a communication failure status, then obtain the number of each target charging forklift. Different electric forklifts have different numbers. The target charging forklift is the charging forklift that is charging on the charger in the communication failure status. Based on the number of each target forklift that is charging, determine the delay time of the charger corresponding to each target forklift that is charging, and reduce the output power of the charger after the corresponding delay time, starting from the time the charger is in a communication failure state.

[0075] Optionally, the determining module 202 is also used for: Obtain the factory's power safety margin; Calculate the difference between the maximum power and the required power to obtain the idle power; If the idle power is greater than the power safety margin, the difference between the idle power and the power safety margin is determined as the available charging power of the electric forklift.

[0076] Optionally, the device 200 further includes a second control module for: Electric forklifts are not allowed to charge if the required power is greater than or equal to the maximum power.

[0077] It is understood that the device provided in the above embodiments is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0078] This invention also provides an electronic device that may include a processor and a memory, wherein the processor and the memory may be interconnected via a bus or other means.

[0079] The processor can be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application, or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or other chips, or combinations of the above types of chips.

[0080] Memory may include mass storage for data or instructions. For example, and not limitingly, memory may include hard disk drives (HDDs), floppy disk drives, flash memory, optical disks, magneto-optical disks, magnetic tape, or Universal Serial Bus (USB) drives, or combinations of two or more of these. Where appropriate, memory may include removable or non-removable (or fixed) media. Where appropriate, memory may be internal or external to an electronic device. In a particular embodiment, memory may be non-volatile solid-state memory.

[0081] In one instance, the memory may be read-only memory (ROM). In one instance, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0082] The processor implements any of the charging methods for electric forklifts in the factory described above by reading and executing computer program instructions stored in the memory.

[0083] In one example, the electronic device may further include a communication interface and a bus. The processor, memory, and communication interface are connected via the bus to communicate with each other. The communication interface is primarily used to enable communication between the various modules, devices, units, and / or equipment in the embodiments of this application. Where appropriate, the bus may include one or more buses.

[0084] Furthermore, in conjunction with the charging method for electric forklifts used in factories described in the above embodiments, this invention can be implemented using a computer-readable storage medium. This computer-readable storage medium stores computer program instructions; when executed by a processor, these computer program instructions implement any of the charging methods for electric forklifts used in factories described in the above embodiments.

[0085] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. The storage medium can be read-only memory (ROM), random access memory (RAM), flash memory, hard disk drive (HDD), or solid-state drive (SSD), etc.; the storage medium can also include combinations of the above types of memory.

[0086] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: This application provides a charging method, apparatus, equipment, and medium for electric forklifts in a factory. It first obtains the power demand of the factory's production line for the next moment, as well as the maximum power the factory can provide. If the demand power is less than the maximum power, it indicates that the factory has spare power to charge the electric forklifts. Then, based on the difference between the maximum power and the demand power, the available charging power for the electric forklifts is determined. The available charging power is less than or equal to the difference and is positively correlated with it. The actual total charging power of all charging forklifts is controlled to be less than or equal to the available charging power, preventing the total power of the charging forklifts and the production line from exceeding the factory's maximum power, thus ensuring that the factory's total incoming instantaneous current does not exceed limits and guaranteeing continuous and safe power supply throughout the factory, thereby improving the operating efficiency of production equipment. The charging forklifts are electric forklifts in a charging state.

[0087] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0088] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0089] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

Claims

1. A charging method for an electric forklift used in a factory, characterized in that, The method includes: The power demand of the factory's production line at the current moment and the maximum power that the factory can provide at the next moment are obtained. If the required power is less than the maximum power, the available charging power of the electric forklift is determined based on the difference between the maximum power and the required power. The available charging power is less than or equal to the difference and is positively correlated with the difference. The actual total charging power of all positively charging forklifts is controlled to be less than or equal to the available charging power, wherein the positively charging forklifts are electric forklifts in a charging state.

2. The charging method for an electric forklift used in a factory according to claim 1, characterized in that, The process of obtaining the power demand of the factory's production line at the next moment includes: Obtain the historical power of the factory's production line at each moment within a set time period, wherein the end time of the set time period is the current moment; Based on all historical power data, determine the power demand of the factory's production lines at the next moment.

3. The charging method for an electric forklift used in a factory according to claim 2, characterized in that, Determining the power demand of the factory's production line at the next moment based on all historical power data includes: Based on all the historical power, determine the rate of change of power at the current moment; Based on the power change rate and the current power at the current moment, determine the power demand of the factory's production line at the next moment.

4. The charging method for an electric forklift used in a factory according to claim 1, characterized in that, The control of the actual total charging power of all positively charging forklifts to be less than or equal to the available charging power includes: Obtain the remaining battery power and charging time for each forklift that is currently charging; Based on the remaining battery power and the charging time of each forklift that is charging, a charging priority coefficient is determined for each forklift that is charging, and the sum of all charging priority coefficients is less than or equal to 1. The product of the charging priority coefficient of each positively charging forklift and the available charging power is determined as the single-vehicle charging power of each positively charging forklift, so that the actual total charging power of all positively charging forklifts is less than or equal to the available charging power. The actual total charging power is the sum of the charging power of all individual vehicles.

5. The charging method for an electric forklift used in a factory according to claim 1, characterized in that, After controlling the actual total charging power of all positively charging forklifts to be less than or equal to the available charging power, the method further includes: The communication status of the charger in the charging state is obtained, including communication failure status and communication normal status, and the charger is used to charge the electric forklift. If the communication status is the communication failure status, then obtain the number of each target positive charging forklift. Different electric forklifts have different numbers. The target positive charging forklift is a positive charging forklift that is charging on the charger in the communication failure status. Based on the number of each target forklift that is charging, the delay duration of the charger corresponding to each target forklift that is charging is determined, and the output power of the charger is reduced after the corresponding delay duration begins from when the charger is in the communication failure state.

6. The charging method for an electric forklift used in a factory according to claim 1, characterized in that, Determining the available charging power of the electric forklift based on the difference between the maximum power and the required power includes: Obtain the power safety margin of the factory; Calculate the difference between the maximum power and the required power to obtain the idle power; If the idle power is greater than the power safety margin, the difference between the idle power and the power safety margin is determined as the available charging power of the electric forklift.

7. The charging method for an electric forklift used in a factory according to claim 1, characterized in that, After obtaining the power demand of the factory production line at the next moment and the maximum power that the factory can provide, the method further includes: If the required power is greater than or equal to the maximum power, the electric forklift is not allowed to charge.

8. A charging device for an electric forklift in a factory, characterized in that, The device includes: The acquisition module is used to acquire the power demand of the factory's production line in the next moment, as well as the maximum power that the factory can provide; The determination module is used to determine the available charging power of the electric forklift based on the difference between the maximum power and the required power if the required power is less than the maximum power. The available charging power is less than or equal to the difference and is positively correlated with the difference. The first control module is used to control the actual total charging power of all positively charging forklifts to be less than or equal to the available charging power, wherein the positively charging forklifts are electric forklifts in a charging state.

9. An electronic device, characterized in that, include: A memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, the processor executing the computer instructions to perform the method of any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the method of any one of claims 1-7.

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