A dual-gun charging control method and device, electronic equipment and readable storage medium

Abstract

This application provides a dual-gun charging control method, apparatus, electronic device, and readable storage medium. The method includes: determining the current charging mode of the power battery by detecting the connection status of the charging guns, and calculating the first charging request current currently required by the power battery; in the dual-gun charging mode, identifying a first difference in the instantaneous current output capabilities of the two charging guns, and determining whether the first difference is greater than the first preset threshold; when the first difference is greater than the first preset threshold, allocating a second charging request current to each charging gun based on the instantaneous current output capability of that charging gun and the first charging request current; and sending the second charging request current corresponding to each charging gun to that charging gun, so that the charging gun uses the second charging request current to charge the power battery. This method helps to improve the charging speed of the power battery.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle charging technology, and in particular to a dual-gun charging control method, device, electronic equipment, and readable storage medium. Background Technology

[0002] As the new energy vehicle market continues to expand, the requirements for charging speed of power batteries are becoming increasingly stringent. However, there are relatively few high-power DC charging stations on the market. Since the lower the power of a DC charging station, the slower the charging speed of the power battery, the current DC charging stations on the market have relatively slow charging speeds.

[0003] Furthermore, with technological advancements, the charging rate of power batteries is gradually increasing. A higher charging rate allows the power battery to receive a larger charging current, resulting in faster charging speeds. However, with this increased charging rate, the current output capability (the instantaneous current output of a DC charging station) is limited. DC charging stations cannot meet the need for rapid charging of power batteries, thus failing to maximize battery performance and address current demands for faster charging speeds. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a dual-gun charging control method, device, electronic device and readable storage medium to improve the charging speed of power batteries.

[0005] In a first aspect, embodiments of this application provide a dual-gun charging control method, including:

[0006] By detecting the connection status of the charging gun, the current charging mode of the power battery is determined, and the first charging request current required by the power battery is calculated based on the highest temperature, lowest temperature, maximum single cell voltage, minimum single cell voltage, and state of charge of the power battery.

[0007] If the current charging mode is a dual-gun charging mode, the first difference in the instantaneous current output capability of the two charging guns is identified to determine whether the first difference is greater than a first preset threshold.

[0008] When the first difference is greater than the first preset threshold, for each charging gun, a second charging request current is allocated to the charging gun according to the magnitude of the instantaneous current output capability of the charging gun and the first charging request current, so that the second charging request current of each charging gun is within the range of its corresponding instantaneous current output capability.

[0009] For each of the charging guns, the second charging request current corresponding to that charging gun is sent to that charging gun so that the charging gun uses the second charging request current to charge the power battery.

[0010] In conjunction with the first aspect, embodiments of this application provide a first possible implementation of the first aspect, which further includes:

[0011] When the first difference is not greater than the first preset threshold, the first charging request current is evenly distributed to the two charging guns to obtain the second charging request current corresponding to each of the two charging guns, so that the second charging request current corresponding to each of the two charging guns is the same.

[0012] In conjunction with the first aspect or the first possible implementation of the first aspect, embodiments of this application provide a second possible implementation of the first aspect, wherein, for each of the charging guns, sending the second charging request current corresponding to that charging gun to the charging gun so that the charging gun uses the second charging request current to charge the power battery, includes:

[0013] For each of the charging guns, the second charging request current corresponding to the charging gun is sent to the charging gun so that the charging gun uses the second charging request current to charge the power battery, and the instantaneous current actually output by the charging gun is detected;

[0014] Determine whether the second difference between the instantaneous current actually output by the charging gun and the second charging request current corresponding to the charging gun is greater than a second preset threshold.

[0015] If the second difference is greater than the second preset threshold, then the second charging request current corresponding to the charging gun is reduced to obtain a new second charging request current corresponding to the charging gun, and the second charging request current corresponding to another charging gun other than the charging gun is increased to obtain a new second charging request current corresponding to the other charging gun.

[0016] For each of the charging guns, a new second charging request current corresponding to that charging gun is sent to that charging gun so that the charging gun uses the new second charging request current to charge the power battery.

[0017] In conjunction with the first aspect, this application provides a third possible implementation of the first aspect, wherein, after sending the second charging request current corresponding to each charging gun to the charging gun so that the charging gun uses the second charging request current to charge the power battery, the method further includes:

[0018] The actual instantaneous charging current of the power battery is collected, and for each charging gun, the actual instantaneous current output by the charging gun is detected to obtain the total instantaneous current actually output by the two charging guns.

[0019] Calculate the third difference between the actual instantaneous charging current of the power battery and the total instantaneous current actually output by the two charging guns, in order to determine whether the third difference is greater than a third preset threshold.

[0020] When the third difference is greater than the third preset threshold, the charging current stability of the actual instantaneous charging current of the power battery is determined.

[0021] When the stability of the charging current is greater than the fourth preset threshold, the corresponding current compensation method is determined according to the relationship between the first difference and the first preset threshold.

[0022] The determined current compensation method is used to reduce the fourth difference between the sum of the second charging request currents corresponding to the two charging guns and the actual instantaneous charging current of the power battery. The second charging request current corresponding to each charging gun is compensated to obtain the third charging request current corresponding to each charging gun, so that each charging gun uses its own corresponding third charging request current to charge the power battery.

[0023] In conjunction with the first aspect, this application provides a fourth possible implementation of the first aspect, which further includes:

[0024] For each of the charging guns, the instantaneous current actually output by the charging gun is detected in real time to determine whether the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time length.

[0025] If the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than the fifth preset threshold, then the fourth charging request current is sent to the charging gun so that the charging gun uses the fourth charging request current to charge the power battery; wherein, the second charging request current corresponding to the charging gun is greater than the fourth charging request current;

[0026] If the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than the sixth preset threshold, then the charging gun will be stopped from charging the power battery; the sixth preset threshold is greater than the fifth preset threshold.

[0027] In conjunction with the first aspect, this application provides a fifth possible implementation of the first aspect, which further includes:

[0028] For each of the charging guns, check whether the communication with the charging gun is normal;

[0029] If communication with the charging gun is abnormal, re-establish communication with the charging gun.

[0030] When communication is successfully re-established, the second charging request current corresponding to the charging gun is sent to the charging gun so that the charging gun uses the second charging request current to charge the power battery.

[0031] When communication reconstruction fails, the first charging request current is sent to another charging gun other than the charging gun itself, so that the other charging gun can use the first charging request current to charge the power battery.

[0032] In conjunction with the first aspect, this application provides a sixth possible implementation of the first aspect, which further includes:

[0033] When a first fault is detected in the power battery, a first charging stop message is sent to each charging gun to stop charging the power battery.

[0034] For each of the charging guns, when a second charging stop message is received from the charging gun, the charging gun is stopped from charging the power battery; and the first charging request current is sent to another charging gun other than the charging gun, so that the other charging gun uses the first charging request current to charge the power battery.

[0035] When a second fault is detected in the power battery and it is necessary to derate the power battery, the fifth charging request current required by the power battery is recalculated based on the power battery's highest temperature, lowest temperature, maximum single-cell voltage, minimum single-cell voltage, battery state of charge, and the second fault; the fifth charging request current is less than the first charging request current.

[0036] When the first difference is greater than the first preset threshold, for each charging gun, according to the magnitude of the instantaneous current output capability of the charging gun and the fifth charging request current, the sixth charging request current is reallocated to the charging gun so that the sixth charging request current of each charging gun is within the range of its corresponding instantaneous current output capability.

[0037] For each of the charging guns, the sixth charging request current corresponding to that charging gun is sent to that charging gun so that the charging gun uses the sixth charging request to charge the power battery.

[0038] Secondly, embodiments of this application also provide a dual-gun charging control device, comprising:

[0039] The first determining module is used to determine the current charging mode of the power battery by detecting the connection status of the charging gun, and to calculate the first charging request current required by the power battery based on the highest temperature, lowest temperature, maximum single cell voltage, minimum single cell voltage, and state of charge of the power battery.

[0040] The identification module is used to identify the first difference in the instantaneous current output capability of the two charging guns if the current charging mode is a dual-gun charging mode, so as to determine whether the first difference is greater than a first preset threshold.

[0041] The first allocation module is used to allocate a second charging request current to each charging gun according to the instantaneous current output capability of the charging gun and the first charging request current when the first difference is greater than the first preset threshold, so that the second charging request current of each charging gun is within the range of its corresponding instantaneous current output capability.

[0042] The first charging module is configured to send the second charging request current corresponding to each of the charging guns to the charging guns, so that the charging guns use the second charging request current to charge the power battery.

[0043] In conjunction with the second aspect, embodiments of this application provide a first possible implementation of the second aspect, which further includes:

[0044] The second allocation module is used to distribute the first charging request current equally to the two charging guns when the first difference is not greater than the first preset threshold, so as to obtain the second charging request current corresponding to each of the two charging guns, so that the second charging request current corresponding to each of the two charging guns is the same.

[0045] In conjunction with the second aspect or the first possible implementation of the second aspect, this application provides a second possible implementation of the second aspect, wherein, when the first charging module is used to send the second charging request current corresponding to each charging gun to the charging gun so that the charging gun uses the second charging request current to charge the power battery, it is specifically used for:

[0046] For each of the charging guns, the second charging request current corresponding to the charging gun is sent to the charging gun so that the charging gun uses the second charging request current to charge the power battery, and the instantaneous current actually output by the charging gun is detected;

[0047] Determine whether the second difference between the instantaneous current actually output by the charging gun and the second charging request current corresponding to the charging gun is greater than a second preset threshold.

[0048] If the second difference is greater than the second preset threshold, then the second charging request current corresponding to the charging gun is reduced to obtain a new second charging request current corresponding to the charging gun, and the second charging request current corresponding to another charging gun other than the charging gun is increased to obtain a new second charging request current corresponding to the other charging gun.

[0049] For each of the charging guns, a new second charging request current corresponding to that charging gun is sent to that charging gun so that the charging gun uses the new second charging request current to charge the power battery.

[0050] In conjunction with the second aspect, this application provides a third possible implementation of the second aspect, which further includes:

[0051] The acquisition module is used to acquire the actual instantaneous charging current of the power battery, and for each charging gun, to detect the actual instantaneous current output by the charging gun, so as to obtain the total instantaneous current actually output by the two charging guns.

[0052] The calculation module is used to calculate the third difference between the actual instantaneous charging current of the power battery and the total instantaneous current actually output by the two charging guns, so as to determine whether the third difference is greater than a third preset threshold.

[0053] The judgment module is used to determine the charging current stability of the actual instantaneous charging current of the power battery when the third difference is greater than the third preset threshold.

[0054] The second determining module is used to determine the corresponding current compensation method based on the relationship between the first difference and the first preset threshold when the stability of the charging current is greater than the fourth preset threshold.

[0055] The compensation module is used to reduce the fourth difference between the sum of the second charging request currents corresponding to the two charging guns and the actual instantaneous charging current of the power battery by using a determined current compensation method. The module performs current compensation on the second charging request current corresponding to each charging gun to obtain the third charging request current corresponding to each charging gun, so that each charging gun uses its own corresponding third charging request current to charge the power battery.

[0056] In conjunction with the second aspect, this application provides a fourth possible implementation of the second aspect, which further includes:

[0057] The first detection module is used to detect the instantaneous current actually output by each charging gun in real time, so as to determine whether the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time length.

[0058] The first sending module is configured to send a fourth charging request current to the charging gun if the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and a fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than a fifth preset threshold, so that the charging gun uses the fourth charging request current to charge the power battery; wherein the second charging request current corresponding to the charging gun is greater than the fourth charging request current;

[0059] The first stop module is configured to stop using the charging gun to charge the power battery if the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than the sixth preset threshold; the sixth preset threshold is greater than the fifth preset threshold.

[0060] In conjunction with the second aspect, this application provides a fifth possible implementation of the second aspect, which further includes:

[0061] The second detection module is used to detect whether the communication with each of the charging guns is normal.

[0062] The reconstruction module is used to re-establish communication with the charging gun if communication with the charging gun is abnormal.

[0063] The successful reconstruction module is used to send the second charging request current corresponding to the charging gun to the charging gun when the communication is successfully reconstructed, so that the charging gun uses the second charging request current to charge the power battery.

[0064] The reconstruction failure module is used to send the first charging request current to another charging gun other than the current charging gun when communication reconstruction fails, so that the other charging gun can use the first charging request current to charge the power battery.

[0065] In conjunction with the second aspect, this application provides a sixth possible implementation of the second aspect, which further includes:

[0066] The second sending module is used to send a first charging stop message to each charging gun when a first fault is detected in the power battery, so as to stop charging the power battery.

[0067] The second stop module is configured to, for each of the charging guns, stop using the charging gun to charge the power battery when a second charging stop message is received from the charging gun; and send the first charging request current to another charging gun other than the charging gun, so that the other charging gun uses the first charging request current to charge the power battery.

[0068] The limit module is used to recalculate the fifth charging request current required by the power battery when a second fault is detected and the power battery needs to be derated for charging. This recalculates the fifth charging request current required by the power battery based on the highest temperature, lowest temperature, maximum single-cell voltage, minimum single-cell voltage, battery state of charge, and the second fault. The fifth charging request current is less than the first charging request current.

[0069] The third allocation module is used to reallocate a sixth charging request current to each charging gun based on the instantaneous current output capability of the charging gun and the fifth charging request current when the first difference is greater than the first preset threshold, so that the sixth charging request current of each charging gun is within its corresponding instantaneous current output capability range.

[0070] The second charging module is used to send the sixth charging request current corresponding to each charging gun to the charging gun, so that the charging gun uses the sixth charging request to charge the power battery.

[0071] Thirdly, embodiments of this application also provide an electronic device, including: a processor, a memory, and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor communicates with the memory via the bus, and when the machine-readable instructions are executed by the processor, the steps in any of the possible implementations of the first aspect described above are performed.

[0072] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps in any of the possible implementations of the first aspect described above.

[0073] This application provides a dual-gun charging control method, apparatus, electronic device, and readable storage medium. In dual-gun charging mode, two charging guns are used to charge the power battery. Compared to using a single charging gun, using two guns improves charging speed. Furthermore, when the first difference in the instantaneous current output capability of the two charging guns exceeds a first preset threshold, indicating a significant difference in their instantaneous current output capabilities, a corresponding second charging request current is allocated to each charging gun based on its instantaneous current output capability. This ensures that the second charging request current of each charging gun is within its respective instantaneous current output capability range, maximizing the capacity of each charging gun and thus improving the charging speed of the power battery.

[0074] 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

[0075] 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.

[0076] Figure 1 A flowchart of a dual-gun charging control method provided in an embodiment of this application is shown;

[0077] Figure 2 A schematic diagram of a dual-gun charging mode provided in an embodiment of this application is shown;

[0078] Figure 3 This paper shows a schematic diagram of the structure of a dual-gun charging control device provided in an embodiment of this application;

[0079] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown. Detailed Implementation

[0080] 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. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0081] Considering the current problem of slow charging speed of power batteries, this application provides a dual-gun charging control method, device, electronic device, and readable storage medium to improve the charging speed of power batteries. The following is a description through embodiments.

[0082] Example 1:

[0083] To facilitate understanding of this embodiment, a detailed description of a dual-gun charging control method disclosed in this application will be provided first. This method is applied to new energy electric vehicles, specifically to the control system of new energy electric vehicles. Figure 1 A flowchart of a dual-gun charging control method provided in an embodiment of this application is shown, as follows: Figure 1 As shown, it includes the following steps:

[0084] S101: By detecting the connection status of the charging gun, determine the current charging mode of the power battery, and calculate the first charging request current required by the power battery based on the highest temperature, lowest temperature, maximum single cell voltage, minimum single cell voltage, and state of charge of the battery.

[0085] In this embodiment, the charging gun is specifically connected to the vehicle charging port of the new energy electric vehicle, and the vehicle charging port is connected to the rechargeable battery. The connection status of the charging guns is detected. When one charging gun is detected connected to the vehicle charging port, it is determined to be a single-gun connection. When the parameters of the charging gun are successfully configured, the current charging mode of the power battery is determined to be a single-gun charging mode. When two charging guns are detected connected to the vehicle charging port, it is determined to be a dual-gun connection. When the parameters of both charging guns are successfully configured, the current charging mode of the power battery is determined to be a dual-gun charging mode. Alternatively, in single-gun charging mode, when a second charging gun is detected connected to the vehicle charging port, it is determined to be a dual-gun connection. When the parameters of the second charging gun are successfully configured, the current charging mode of the power battery is determined to be a dual-gun charging mode.

[0086] In this embodiment, Figure 2 The diagram illustrates a dual-gun charging mode provided in an embodiment of this application, as shown below. Figure 2 As shown, when two charging guns are connected to the vehicle's charging port, these two charging guns can come from the same charging station or from different charging stations.

[0087] A power battery is a battery in a new energy electric vehicle used to power all the electrical equipment in the vehicle. A power battery contains multiple cells, each with its own temperature. The highest and lowest temperatures of a power battery refer to the highest and lowest temperatures of each individual cell.

[0088] The state of charge (SOC) of a battery is the ratio of its remaining capacity to its capacity when fully charged, usually expressed as a percentage. Its value ranges from 0 to 1; when SOC = 0, the battery is fully discharged; when SOC = 1, the battery is fully charged.

[0089] The first charging request current refers to the instantaneous charging current that the power battery currently wants to request from all charging guns, or the instantaneous current that the power battery wants to input at each moment.

[0090] S102: If the current charging mode is dual-gun charging mode, identify the first difference in the instantaneous current output capability of the two charging guns to determine whether the first difference is greater than the first preset threshold.

[0091] In this embodiment, the instantaneous current output capability of the charging gun refers to the maximum instantaneous current that the charging gun can output at any given moment. The instantaneous current output capabilities of the two charging guns are identified to calculate a first difference between their instantaneous current output capabilities. For example, the first preset threshold can be 20A.

[0092] S103: When the first difference is greater than the first preset threshold, for each charging gun, according to the magnitude of the instantaneous current output capability of the charging gun and the first charging request current, a second charging request current is allocated to the charging gun so that the second charging request current of each charging gun is within the range of its corresponding instantaneous current output capability.

[0093] When the difference in instantaneous current output capability between the two charging guns exceeds a first preset threshold, it indicates a significant difference in their charging capabilities. In this case, a corresponding second charging request current is allocated to each charging gun based on the first charging request current and the instantaneous current output capability of each charging gun. The second charging request current of a charging gun refers to the instantaneous charging current that the power battery requests from that charging gun, or in other words, the instantaneous output current that the charging gun needs to output at any given moment. In dual-gun charging mode, the sum of the second charging request currents corresponding to each of the two charging guns equals the first charging request current. Therefore, the stronger the instantaneous current output capability of a charging gun, the larger the second charging request current allocated to it; conversely, the weaker the instantaneous current output capability of a charging gun, the smaller the second charging request current allocated to it.

[0094] For example, in dual-gun charging mode, when the first charging request current is 300A, if the instantaneous current output capability of charging gun B1 is 350A and the instantaneous current output capability of charging gun B2 is 150A, since the first difference in the instantaneous current output capability of these two charging guns is 200A, which is greater than the first preset threshold of 20A, the current allocated to each charging gun is adjusted according to the instantaneous current output capability of each charging gun. For example, 200A of the first charging request current can be allocated to charging gun B1, and the remaining 100A can be allocated to charging gun B2. At this time, the second charging request current of charging gun B1 is 200A, and the second charging request current of charging gun B2 is 100A. The second charging request current of both charging guns is within the range of their respective instantaneous current output capabilities.

[0095] In this embodiment, if the current charging mode is single-gun charging mode, the first charging request current is used as the second charging request current of the charging gun corresponding to the single-gun charging mode.

[0096] S104: For each charging gun, send the second charging request current corresponding to the charging gun to the charging gun so that the charging gun uses the second charging request current to charge the power battery.

[0097] In this embodiment, for each charging gun, the second charging request current corresponding to the charging gun can be sent to the charging pile where the charging gun is located, so that the charging pile controls the charging gun to use the second charging request current to charge the power battery.

[0098] In one possible implementation, after performing step S102, the following can be further implemented: when the first difference is not greater than the first preset threshold, the first charging request current is evenly distributed to the two charging guns to obtain the second charging request current corresponding to each of the two charging guns, so that the second charging request current corresponding to each of the two charging guns is the same.

[0099] In this embodiment, after the first charging request current is evenly distributed to the two charging guns, the second charging request currents corresponding to the two charging guns are the same, and the sum of the second charging request currents of the two charging guns is equal to the first charging request current.

[0100] In one possible implementation, factors such as charging load may cause the instantaneous current actually output by the charging gun (i.e., the instantaneous output current) to be less than the second charging request current of the charging gun in some cases. In this case, if the charging gun is used continuously to charge the power battery, the charging speed of the power battery will be slow. Therefore, in order to solve the above problem, in this embodiment, when performing step S104, the following steps S1041-S1044 can be specifically performed:

[0101] S1041: For each charging gun, send the second charging request current corresponding to the charging gun to the charging gun so that the charging gun uses the second charging request current to charge the power battery, and detect the instantaneous current actually output by the charging gun.

[0102] In this embodiment, after the second charging request current of the charging gun is sent to the charging gun, the instantaneous current actually output by the charging gun is detected in real time during the process of the charging gun using the second charging request current to charge the power battery.

[0103] S1042: Determine whether the second difference between the instantaneous current actually output by the charging gun and the second charging request current corresponding to the charging gun is greater than a second preset threshold.

[0104] In this embodiment, it is determined whether the instantaneous current actually output by the charging gun is less than the second charging request current corresponding to the charging gun, and whether the second difference between the instantaneous current actually output by the charging gun and the second charging request current corresponding to the charging gun is greater than a second preset threshold.

[0105] S1043: If the second difference is greater than the second preset threshold, then reduce the second charging request current corresponding to the charging gun to obtain a new second charging request current corresponding to the charging gun, and increase the second charging request current corresponding to another charging gun other than the charging gun to obtain a new second charging request current corresponding to the other charging gun.

[0106] In this embodiment, if the instantaneous current actually output by the charging gun is less than the second charging request current corresponding to the charging gun, and the second difference is greater than the second preset threshold, then the second charging request current corresponding to the charging gun is reduced to obtain a new second charging request current corresponding to the charging gun. That is, the new second charging request current corresponding to the charging gun is less than the original second charging request current of the charging gun. At the same time, the second charging request current corresponding to another charging gun is increased to obtain a new second charging request current corresponding to another charging gun. At this time, the new second charging request current corresponding to the other charging gun is greater than the original second charging request current of the other charging gun.

[0107] After adjusting the second charging request current of the two charging guns to obtain the new second charging request current for each of the two charging guns, the sum of the two new second charging request currents is equal to the first charging request current.

[0108] For example, in dual-gun charging mode, if the second charging request current of charging gun B1 is 200A and the second charging request current of charging gun B2 is 100A, when the instantaneous current actually output by charging gun B1 is 150A, in order to ensure the charging capacity of the power battery, the second charging request current of charging gun B1 is reduced to 150A (new second charging request current), and the second charging request current of charging gun B2 is increased to 150A (new second charging request current).

[0109] S1044: For each charging gun, send the new second charging request current corresponding to the charging gun to the charging gun so that the charging gun uses the new second charging request current to charge the power battery.

[0110] In this embodiment, when the instantaneous current actually output by the charging gun (i.e., the instantaneous output current) is less than the second charging request current of the charging gun, and the second difference between the instantaneous current actually output by the charging gun and the second charging request current corresponding to the charging gun is greater than the second preset threshold, the instantaneous total output current of the two charging guns is guaranteed to be the first charging request current by reducing the second charging request current of the charging gun and increasing the second charging request current of the other charging gun, which is beneficial to ensuring the charging speed of the power battery.

[0111] In one possible implementation, if other electrical devices in the new energy electric vehicle are running while the charging guns are charging the power battery, these devices will consume a portion of the instantaneous current actually output by the charging guns. This will result in the instantaneous current actually input into the power battery being less than the instantaneous current actually output by the power battery, thus affecting the charging speed of the power battery. Therefore, to solve the above problem, in this embodiment, after executing step S104, the following steps S1051-S1055 can also be executed:

[0112] S1051: Collect the actual instantaneous charging current of the power battery, and for each charging gun, detect the actual instantaneous current output by that charging gun to obtain the total instantaneous current output by the two charging guns.

[0113] In this implementation, the actual instantaneous charging current of the power battery is collected in real time, and the actual instantaneous current output by each charging gun is detected in real time. The sum of the actual instantaneous current output by the two charging guns is taken as the total instantaneous current output by the two charging guns.

[0114] S1052: Calculate the third difference between the actual instantaneous charging current of the power battery and the total instantaneous current actually output by the two charging guns, in order to determine whether the third difference is greater than the third preset threshold.

[0115] In this embodiment, when the actual instantaneous charging current of the power battery is less than the total instantaneous current actually output by the two charging guns, a third difference between the actual instantaneous charging current of the power battery and the total instantaneous current actually output by the two charging guns is calculated, and it is determined whether the third difference is greater than a third preset threshold.

[0116] S1053: When the third difference is greater than the third preset threshold, determine the charging current stability of the actual instantaneous charging current of the power battery.

[0117] In this embodiment, the third preset threshold serves as the current compensation threshold. When the actual instantaneous charging current of the power battery is less than the total instantaneous output current of the two charging guns, and the third difference between the actual instantaneous charging current of the power battery and the total instantaneous output current of the two charging guns is greater than the third preset threshold, it indicates that the total instantaneous output current of the two charging guns differs significantly from the actual instantaneous charging current of the power battery. This suggests that other electrical devices in the new energy electric vehicle are currently consuming power. In other words, the actual instantaneous charging current of the power battery is less than the first charging request current required by the power battery, necessitating current compensation. Before performing current compensation, it is necessary to determine the stability of the actual instantaneous charging current of the power battery.

[0118] In this embodiment, the charging current stability of the actual instantaneous charging current of the power battery can be determined in the following way: within a preset time period, if the difference between the maximum and minimum actual instantaneous charging current of the power battery is not greater than (less than or equal to) the stability threshold, it indicates that the charging current stability of the actual instantaneous charging current of the power battery is relatively strong. In other words, the charging current stability of the actual instantaneous charging current of the power battery is greater than the fourth preset threshold at this time.

[0119] If the difference between the maximum and minimum instantaneous charging current of the power battery is greater than the stability threshold, it indicates that the charging current stability of the power battery is low. In other words, the charging current stability of the power battery is not greater than (less than or equal to) the fourth preset threshold.

[0120] S1054: When the charging current stability is greater than the fourth preset threshold, determine the corresponding current compensation method according to the relationship between the first difference and the first preset threshold.

[0121] In this embodiment, when the charging current stability is greater than the fourth preset threshold, if the first difference in the instantaneous current output capability of the two charging guns is not greater than the first preset threshold, that is, when the difference in the instantaneous current output capability of the two charging guns is small, the current compensation method is determined to be the first current compensation method.

[0122] When the charging current stability is greater than the fourth preset threshold, if the first difference in the instantaneous current output capability of the two charging guns is greater than the first preset threshold, that is, when the difference in the instantaneous current output capability of the two charging guns is large, the current compensation method is determined to be the second current compensation method.

[0123] S1055: Using the determined current compensation method, with the aim of reducing the fourth difference between the sum of the second charging request currents corresponding to the two charging guns and the actual instantaneous charging current of the power battery, current compensation is performed on the second charging request current corresponding to each charging gun to obtain the third charging request current corresponding to each charging gun, so that each charging gun uses its own corresponding third charging request current to charge the power battery.

[0124] In this embodiment, the first current compensation method is as follows: the third difference between the actual instantaneous charging current of the power battery and the total instantaneous output current of the two charging guns is used as the total compensation current. The total compensation current is evenly distributed to the two charging guns so that each charging gun receives a compensation current (half of the total compensation current). For each charging gun, the current is gradually increased from 0 based on the second charging request current of that charging gun, and the sum of the second charging request current and the increased current is obtained. This sum of currents is used as the third charging request current for that charging gun. The maximum value of the increased current for each charging gun is the compensation current of that charging gun. For example, for charging gun B1, if the second charging request current of charging gun B1 is 200A and the compensation current is 50A, then the third charging request current of charging gun B1 is gradually increased from 0 based on 200A, with a maximum increase of 50A. That is, the third charging request current of charging gun B1 is successively 200A, 201A, 202A...250A. The third charging request current refers to the amount of current the power battery wants to request from the charging gun, which is the instantaneous current that the charging gun needs to output. The third charging request current of the charging gun is greater than the second charging request current.

[0125] In one scenario, for each charging gun, if the increase in the third charging request current of that charging gun fails to reach the compensation current during its increase, and if the difference between the actual instantaneous charging current of the power battery and the first charging request current is detected to be less than a certain threshold, then the current increase is stopped, and the current third charging request current is taken as the final third charging request current for that charging gun, allowing the charging gun to maintain this third charging request current to charge the power battery. For example, when the third charging request current of the charging gun is 220A, the current increase is 20A. If, while the charging gun is using 220A to charge the power battery (at the same time, another charging gun is also using its corresponding third charging request current to charge the power battery), and the difference between the actual instantaneous charging current of the power battery and the first charging request current is less than a certain threshold, then the current increase is stopped, and 220A is taken as the final third charging request current for that charging gun, allowing the charging gun to continuously use 220A to charge the power battery.

[0126] In another scenario, for each charging gun, as the third charging request current of that charging gun increases (the charging gun uses the current third charging request current to charge the power battery), if, when the increased current reaches the compensation current, the difference between the actual instantaneous charging current of the power battery and the first charging request current is still not less than a certain threshold, then the current increase is stopped. The sum of the second charging request current and the compensation current is used as the final third charging request current for that charging gun, allowing the charging gun to maintain this third charging request current to charge the power battery (at this time, another charging gun also uses its corresponding third charging request current to charge the power battery). For example, when the third charging request current is 250A, the increased current is 50A (compensation current). If, when the charging gun is using 250A to charge the power battery, the difference between the actual instantaneous charging current of the power battery and the first charging request current is still not less than a certain threshold, then the current increase is stopped, and 250A is used as the final third charging request current for that charging gun, allowing the charging gun to continuously use 250A to charge the power battery.

[0127] In this compensation method, by increasing the second charging request current of each charging gun to the third charging request current, the instantaneous current output by the charging gun can reduce the impact of the electrical equipment's power consumption on the charging of the power battery while supplying power to the electrical equipment in the new energy electric vehicle, thereby improving the charging speed of the power battery.

[0128] The second current compensation method is as follows: The charging gun with the stronger instantaneous current output capability is selected as the target charging gun from the two charging guns. The third difference between the actual instantaneous charging current of the power battery and the total instantaneous current output by the two charging guns is used as the compensation current of the target charging gun. Based on the second charging request current of the target charging gun, the current is gradually increased from 0, resulting in the sum of the second charging request current and the increased current. This sum is used as the third charging request current corresponding to the target charging gun. The maximum value of the increased current of the target charging gun is the compensation current. For example, if the second charging request current of the target charging gun is 200A and the compensation current is 100A, then the third charging request current of the target charging gun is gradually increased from 0 based on 200A, with a maximum increase of 100A. That is, the third charging request current of the target charging gun is successively 200A, 201A, 202A...300A. Here, the third charging request current refers to the magnitude of the current that the power battery wants to request from the target charging gun, that is, the magnitude of the instantaneous current that the target charging gun needs to output. The third charging request current of the target charging gun is greater than the second charging request current.

[0129] In one scenario, when the target charging gun's third charging request current is increasing (the target charging gun uses the current third charging request current to charge the power battery), and the increased current does not reach the compensation current, if the difference between the actual instantaneous charging current of the power battery and the first charging request current is detected to be less than a certain threshold, then the current increase is stopped, and the current third charging request current is used as the target charging gun's final third charging request current, allowing the target charging gun to maintain this third charging request current to charge the power battery. For example, when the third charging request current is 250A, the increased current is 50A (less than the compensation current of 100A). If the target charging gun is using 250A to charge the power battery (while another charging gun is simultaneously using its corresponding second charging request current to charge the power battery), and the difference between the actual instantaneous charging current of the power battery and the first charging request current is less than a certain threshold, then the current increase is stopped, and 250A is used as the target charging gun's final third charging request current, allowing the target charging gun to continuously use 250A to charge the power battery.

[0130] In another scenario, as the third charging request current of the target charging gun increases, if the difference between the actual instantaneous charging current of the power battery and the first charging request current is not less than a certain threshold when the increased current reaches the compensation current, the current increase is stopped. The sum of the second charging request current and the compensation current is taken as the final third charging request current of the target charging gun, so that the target charging gun maintains this third charging request current to charge the power battery (at the same time, another charging gun uses its corresponding second charging request current to charge the power battery). For example, when the third charging request current is 300A (the sum of the second charging request current 200A and the compensation current 100A), the current added at this time is 100A (compensation current). If the target charging gun is using 300A to charge the power battery (while another charging gun is simultaneously using its corresponding second charging request current to charge the power battery), and the difference between the actual instantaneous charging current of the power battery and the first charging request current is still not less than a certain threshold, then the current is stopped from being increased further, and 300A is used as the final third charging request current of the target charging gun, so that the target charging gun continues to use 300A to charge the power battery.

[0131] In this embodiment, by increasing the second charging request current of the target charging gun with a stronger instantaneous current output capability to the third charging request current, while keeping the second charging request current of the target charging gun with a weaker instantaneous current output capability unchanged, the instantaneous current output by the charging gun can reduce the impact of the electrical equipment's power consumption on the charging of the power battery while supplying power to the electrical equipment in the new energy electric vehicle, thereby improving the charging speed of the power battery.

[0132] In one possible implementation, after performing step S104, the following steps S1061-S1063 may also be performed:

[0133] S1061: For each charging gun, the instantaneous current actually output by the charging gun is detected in real time to determine whether the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time length.

[0134] In this embodiment, during the charging process of the power battery using a charging gun, the instantaneous current actually output by each charging gun is detected in real time.

[0135] S1062: If the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than the fifth preset threshold, then the fourth charging request current is sent to the charging gun so that the charging gun uses the fourth charging request current to charge the power battery; wherein, the second charging request current corresponding to the charging gun is greater than the fourth charging request current.

[0136] In this embodiment, when the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time length, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than the fifth preset threshold and less than the sixth preset threshold within the preset time length, it indicates that the charging gun has experienced a first charging overcurrent situation.

[0137] When the charging gun experiences a first overcurrent condition, the fourth charging request current is obtained by multiplying the second charging request current corresponding to the charging gun by a first limit coefficient. The first limit coefficient can be greater than 0 and less than 1; specifically, it can be greater than 0.6 and less than 1. For example, the first limit coefficient can be 0.9.

[0138] In this embodiment, timing begins when the charging gun uses the fourth charging request current to charge the power battery. It is determined whether the charging gun experiences a first charging overcurrent condition again within a preset time period. If no first charging overcurrent condition occurs, the charging gun resumes using the second charging request current to charge the power battery. If a first charging overcurrent condition occurs again, the second charging request current corresponding to the charging gun is multiplied by a second limit coefficient to obtain a new fourth charging request current for the charging gun. The second limit coefficient is less than the first limit coefficient, and is greater than 0 and less than 1. Specifically, the second limit coefficient can be greater than 0 and less than 0.6; for example, the second limit coefficient can be 0.5.

[0139] S1063: If the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than the sixth preset threshold, then the charging gun shall be stopped from being used to charge the power battery; the sixth preset threshold is greater than the fifth preset threshold.

[0140] In this embodiment, when the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than a sixth preset threshold, it indicates that a second charging overcurrent situation has occurred. When a second charging overcurrent situation is detected, the charging gun is stopped from charging the power battery. The second charging overcurrent situation is more severe than the first charging overcurrent situation.

[0141] In one possible implementation, after performing step S104, the following steps S1071-S1074 may also be performed:

[0142] S1071: For each charging gun, check whether the communication with that charging gun is normal.

[0143] In this embodiment, for each charging gun, while the charging gun is charging the power battery using the second charging request current, it is in real time to detect whether the communication between the new energy electric vehicle (or the control system in the new energy electric vehicle) and the charging gun is normal.

[0144] S1072: If communication with the charging gun is abnormal, re-establish communication with the charging gun.

[0145] In this embodiment, when a communication timeout is detected between the new energy electric vehicle (or the control system in the new energy electric vehicle) and the charging gun, it indicates that the communication between the new energy electric vehicle (or the control system in the new energy electric vehicle) and the charging gun is abnormal. At this time, the new energy electric vehicle (or the control system in the new energy electric vehicle) needs to re-establish communication with the charging gun.

[0146] S1073: When communication is successfully re-established, the second charging request current corresponding to the charging gun is sent to the charging gun so that the charging gun uses the second charging request current to charge the power battery.

[0147] In this embodiment, when it is detected that the communication between the new energy electric vehicle (or the control system in the new energy electric vehicle) and the charging gun has been successfully re-established, the second charging request current corresponding to the charging gun is sent to the charging gun so that the charging gun uses the second charging request current to charge the power battery.

[0148] S1074: When communication reconstruction fails, the first charging request current is sent to another charging gun other than the charging gun, so that the other charging gun uses the first charging request current to charge the power battery.

[0149] In this embodiment, when a communication reconstruction failure is detected between the new energy electric vehicle (or the control system in the new energy electric vehicle) and the charging gun, it indicates that the charging gun cannot continue to charge the power battery. At this time, only another charging gun is charging the power battery, which will affect the charging speed of the power battery. Therefore, in order to improve the charging speed of the power battery, in this embodiment, a first charging request current is sent to another charging gun so that the other charging gun uses the first charging request current to charge the power battery, thereby ensuring the charging speed of the power battery.

[0150] In one possible implementation, after performing step S104, the following steps S1081-S1084 may also be performed:

[0151] S1081: When a first fault is detected in the power battery, a first charging stop message is sent to each charging gun to stop charging the power battery.

[0152] In this embodiment, in dual-gun charging mode, the system continuously monitors the power battery for faults. When a first fault is detected, a first charging stop message is sent to each charging gun. Upon receiving the first charging stop message, each charging gun stops charging the power battery. The first fault indicates that the power battery has malfunctioned and cannot continue charging.

[0153] S1082: For each charging gun, when a second charging stop message is received from the charging gun, the charging gun is stopped from charging the power battery; and a first charging request current is sent to another charging gun other than the charging gun, so that the other charging gun uses the first charging request current to charge the power battery.

[0154] In this embodiment, for each charging gun, when the charging gun (or the charging pile where the charging gun is located) malfunctions, or when the user swipes their card to suspend the use of the charging gun for charging, the charging gun sends a second charging stop message to the new energy electric vehicle (or the control system in the new energy electric vehicle) and stops supplying current to the power battery.

[0155] Since the charging gun stops charging the power battery, only another charging gun besides the one that is charging the power battery will charge it. This will affect the charging speed of the power battery. In this embodiment, in order to ensure the charging speed of the power battery, the new energy electric vehicle (or the control system in the new energy electric vehicle) sends a first charging request current to the other charging gun so that the other charging gun can use the first charging request current to charge the power battery, thereby ensuring the charging speed of the power battery.

[0156] S1083: When a second fault is detected in the power battery and the power battery needs to be derated, the fifth charging request current required by the power battery is recalculated based on the power battery's highest temperature, lowest temperature, maximum single cell voltage, minimum single cell voltage, battery state of charge, and the second fault; the fifth charging request current is less than the first charging request current.

[0157] In this embodiment, the second fault indicates that the power battery needs to reduce the charging request current due to a malfunction. For example, the second fault could be that the power battery temperature is too high.

[0158] The fifth charging request current refers to the instantaneous charging current that the power battery wants to request from all charging guns after the second fault occurs, or the instantaneous current that the power battery wants to input at each moment.

[0159] S1084: When the first difference is greater than the first preset threshold, for each charging gun, according to the magnitude of the instantaneous current output capability of the charging gun and the fifth charging request current, the sixth charging request current is reallocated to the charging gun so that the sixth charging request current of each charging gun is within the range of its corresponding instantaneous current output capability.

[0160] In this embodiment, after calculating the fifth charging request current of the power battery, in dual-gun charging mode, the sixth charging request current of each charging gun needs to be recalculated. The sixth charging request current of a charging gun refers to the instantaneous charging current that the power battery wants to request from that charging gun after a second fault occurs, or in other words, the instantaneous output current that the charging gun needs to output at each moment. In dual-gun charging mode, the sum of the sixth charging request currents corresponding to the two charging guns equals the fifth charging request current. Therefore, the stronger the instantaneous current output capability of a charging gun, the larger the sixth charging request current allocated to that charging gun; the weaker the instantaneous current output capability of a charging gun, the smaller the sixth charging request current allocated to that charging gun.

[0161] S1085: For each charging gun, send the sixth charging request current corresponding to the charging gun to the charging gun so that the charging gun uses the sixth charging request to charge the power battery.

[0162] In this embodiment, there is no fixed requirement for the execution order of steps S1081, S1082, and S1083-S1085. Steps S1081, S1082, or S1083-S1085 can be executed individually.

[0163] Example 2:

[0164] Based on the same technical concept, this application also provides a dual-gun charging control device. Figure 3 This application provides a schematic diagram of the structure of a dual-gun charging control device according to an embodiment of the present application. Figure 3 As shown, the device includes:

[0165] The first determining module 301 is used to determine the current charging mode of the power battery by detecting the connection status of the charging gun, and to calculate the first charging request current required by the power battery based on the highest temperature, lowest temperature, maximum single cell voltage, minimum single cell voltage, and state of charge of the power battery.

[0166] The identification module 302 is used to identify the first difference in the instantaneous current output capability of the two charging guns if the current charging mode is a dual-gun charging mode, so as to determine whether the first difference is greater than a first preset threshold.

[0167] The first allocation module 303 is used to allocate a second charging request current to each charging gun according to the magnitude of the instantaneous current output capability of the charging gun and the first charging request current when the first difference is greater than the first preset threshold, so that the second charging request current of each charging gun is within the range of its corresponding instantaneous current output capability.

[0168] The first charging module 304 is used to send the second charging request current corresponding to each charging gun to the charging gun, so that the charging gun uses the second charging request current to charge the power battery.

[0169] Optional, also includes:

[0170] The second allocation module is used to distribute the first charging request current equally to the two charging guns when the first difference is not greater than the first preset threshold, so as to obtain the second charging request current corresponding to each of the two charging guns, so that the second charging request current corresponding to each of the two charging guns is the same.

[0171] Optionally, when the first charging module 304 sends the second charging request current corresponding to each charging gun to that charging gun so that the charging gun uses the second charging request current to charge the power battery, it is specifically used for:

[0172] For each of the charging guns, the second charging request current corresponding to the charging gun is sent to the charging gun so that the charging gun uses the second charging request current to charge the power battery, and the instantaneous current actually output by the charging gun is detected;

[0173] Determine whether the second difference between the instantaneous current actually output by the charging gun and the second charging request current corresponding to the charging gun is greater than a second preset threshold.

[0174] If the second difference is greater than the second preset threshold, then the second charging request current corresponding to the charging gun is reduced to obtain a new second charging request current corresponding to the charging gun, and the second charging request current corresponding to another charging gun other than the charging gun is increased to obtain a new second charging request current corresponding to the other charging gun.

[0175] For each of the charging guns, a new second charging request current corresponding to that charging gun is sent to that charging gun so that the charging gun uses the new second charging request current to charge the power battery.

[0176] Optional, also includes:

[0177] The acquisition module is used to acquire the actual instantaneous charging current of the power battery, and for each charging gun, to detect the actual instantaneous current output by the charging gun, so as to obtain the total instantaneous current actually output by the two charging guns.

[0178] The calculation module is used to calculate the third difference between the actual instantaneous charging current of the power battery and the total instantaneous current actually output by the two charging guns, so as to determine whether the third difference is greater than a third preset threshold.

[0179] The judgment module is used to determine the charging current stability of the actual instantaneous charging current of the power battery when the third difference is greater than the third preset threshold.

[0180] The second determining module is used to determine the corresponding current compensation method based on the relationship between the first difference and the first preset threshold when the stability of the charging current is greater than the fourth preset threshold.

[0181] The compensation module is used to reduce the fourth difference between the sum of the second charging request currents corresponding to the two charging guns and the actual instantaneous charging current of the power battery by using a determined current compensation method. The module performs current compensation on the second charging request current corresponding to each charging gun to obtain the third charging request current corresponding to each charging gun, so that each charging gun uses its own corresponding third charging request current to charge the power battery.

[0182] Optional, also includes:

[0183] The first detection module is used to detect the instantaneous current actually output by each charging gun in real time, so as to determine whether the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time length.

[0184] The first sending module is configured to send a fourth charging request current to the charging gun if the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and a fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than a fifth preset threshold, so that the charging gun uses the fourth charging request current to charge the power battery; wherein the second charging request current corresponding to the charging gun is greater than the fourth charging request current;

[0185] The first stop module is configured to stop using the charging gun to charge the power battery if the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than the sixth preset threshold; the sixth preset threshold is greater than the fifth preset threshold.

[0186] Optional, also includes:

[0187] The second detection module is used to detect whether the communication with each of the charging guns is normal.

[0188] The reconstruction module is used to re-establish communication with the charging gun if communication with the charging gun is abnormal.

[0189] The successful reconstruction module is used to send the second charging request current corresponding to the charging gun to the charging gun when the communication is successfully reconstructed, so that the charging gun uses the second charging request current to charge the power battery.

[0190] The reconstruction failure module is used to send the first charging request current to another charging gun other than the current charging gun when communication reconstruction fails, so that the other charging gun can use the first charging request current to charge the power battery.

[0191] Optional, also includes:

[0192] The second sending module is used to send a first charging stop message to each charging gun when a first fault is detected in the power battery, so as to stop charging the power battery.

[0193] The second stop module is configured to, for each of the charging guns, stop using the charging gun to charge the power battery when a second charging stop message is received from the charging gun; and send the first charging request current to another charging gun other than the charging gun, so that the other charging gun uses the first charging request current to charge the power battery.

[0194] The limit module is used to recalculate the fifth charging request current required by the power battery when a second fault is detected and the power battery needs to be derated for charging. This recalculates the fifth charging request current required by the power battery based on the highest temperature, lowest temperature, maximum single-cell voltage, minimum single-cell voltage, battery state of charge, and the second fault. The fifth charging request current is less than the first charging request current.

[0195] The third allocation module is used to reallocate a sixth charging request current to each charging gun based on the instantaneous current output capability of the charging gun and the fifth charging request current when the first difference is greater than the first preset threshold, so that the sixth charging request current of each charging gun is within its corresponding instantaneous current output capability range.

[0196] The second charging module is used to send the sixth charging request current corresponding to each charging gun to the charging gun, so that the charging gun uses the sixth charging request to charge the power battery.

[0197] Example 3:

[0198] Figure 4 A schematic diagram of an electronic device provided in this application embodiment includes: a processor 401, a memory 402, and a bus 403. The memory 402 stores machine-readable instructions executable by the processor 401. When the electronic device runs the above-described information processing method, the processor 401 and the memory 402 communicate through the bus 403. The processor 401 executes the machine-readable instructions to perform the steps of the method described in Embodiment 1.

[0199] Example 4:

[0200] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps described in Embodiment 1.

[0201] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, electronic devices, and computer-readable storage media described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0202] In the several embodiments provided in this application, it should be understood that the disclosed methods, apparatus, electronic devices, and computer-readable storage media can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0203] 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.

[0204] 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.

[0205] 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.

[0206] 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 protection of the claims.

Claims

1. A dual-gun charging control method, characterized in that, include: By detecting the connection status of the charging gun, the current charging mode of the power battery is determined, and the first charging request current required by the power battery is calculated based on the highest temperature, lowest temperature, maximum single cell voltage, minimum single cell voltage, and state of charge of the power battery. If the current charging mode is a dual-gun charging mode, the first difference in the instantaneous current output capability of the two charging guns is identified to determine whether the first difference is greater than a first preset threshold. When the first difference is greater than the first preset threshold, for each charging gun, a second charging request current is allocated to the charging gun according to the magnitude of the instantaneous current output capability of the charging gun and the first charging request current, so that the second charging request current of each charging gun is within the range of its corresponding instantaneous current output capability. For each of the charging guns, the second charging request current corresponding to that charging gun is sent to that charging gun so that the charging gun uses the second charging request current to charge the power battery; After sending the second charging request current corresponding to each charging gun to the charging gun so that the charging gun uses the second charging request current to charge the power battery, the method further includes: The actual instantaneous charging current of the power battery is collected, and for each charging gun, the actual instantaneous current output by the charging gun is detected to obtain the total instantaneous current actually output by the two charging guns. When the actual instantaneous charging current of the power battery is less than the total instantaneous current actually output by the two charging guns, calculate the third difference between the actual instantaneous charging current of the power battery and the total instantaneous current actually output by the two charging guns, and determine whether the third difference is greater than the third preset threshold. When the third difference is greater than the third preset threshold, the charging current stability of the actual instantaneous charging current of the power battery is determined. When the stability of the charging current is greater than the fourth preset threshold, if the first difference in the instantaneous output capability of the two charging guns is not greater than the first preset threshold, the current compensation method is determined to be the first current compensation method; if the first difference in the instantaneous output capability of the two charging guns is greater than the first preset threshold, the current compensation method is determined to be the second current compensation method. The first current compensation method is: the third difference between the actual instantaneous charging current of the power battery and the total instantaneous output current of the two charging guns is used as the total compensation current, and the total compensation current is evenly distributed to the two charging guns so that each charging gun receives a compensation current. The second current compensation method is: the charging gun with the stronger instantaneous current output capability is determined from the two charging guns as the target charging gun, and the third difference between the actual instantaneous charging current of the power battery and the total instantaneous output current of the two charging guns is used as the compensation current of the target charging gun. The determined current compensation method is used to reduce the fourth difference between the sum of the second charging request currents corresponding to the two charging guns and the actual instantaneous charging current of the power battery. The second charging request current corresponding to each charging gun is compensated to obtain the third charging request current corresponding to each charging gun, so that each charging gun uses its own corresponding third charging request current to charge the power battery.

2. The method according to claim 1, characterized in that, Also includes: When the first difference is not greater than the first preset threshold, the first charging request current is evenly distributed to the two charging guns to obtain the second charging request current corresponding to each of the two charging guns, so that the second charging request current corresponding to each of the two charging guns is the same.

3. The method according to claim 1 or 2, characterized in that, The step of sending the second charging request current corresponding to each charging gun to that charging gun, so that the charging gun uses the second charging request current to charge the power battery, includes: For each of the charging guns, the second charging request current corresponding to the charging gun is sent to the charging gun so that the charging gun uses the second charging request current to charge the power battery, and the instantaneous current actually output by the charging gun is detected; Determine whether the instantaneous current actually output by the charging gun is less than the second charging request current corresponding to the charging gun, and determine whether the second difference between the instantaneous current actually output by the charging gun and the second charging request current corresponding to the charging gun is greater than a second preset threshold. If the instantaneous current actually output by the charging gun is less than the second charging request current corresponding to the charging gun, and the second difference is greater than the second preset threshold, then the second charging request current corresponding to the charging gun is reduced to obtain a new second charging request current corresponding to the charging gun, and the second charging request current corresponding to another charging gun other than the charging gun is increased to obtain a new second charging request current corresponding to the other charging gun. For each of the charging guns, a new second charging request current corresponding to that charging gun is sent to that charging gun so that the charging gun uses the new second charging request current to charge the power battery.

4. The method according to claim 1, characterized in that, Also includes: For each of the charging guns, the instantaneous current actually output by the charging gun is detected in real time to determine whether the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time length. If the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than the fifth preset threshold, then the fourth charging request current is sent to the charging gun so that the charging gun uses the fourth charging request current to charge the power battery; wherein, the second charging request current corresponding to the charging gun is greater than the fourth charging request current; If the instantaneous current actually output by the charging gun is continuously greater than the second charging request current corresponding to the charging gun within a preset time period, and the fourth difference between the instantaneous current actually output by the charging gun and the second charging request current is continuously greater than the sixth preset threshold, then the charging gun will be stopped from charging the power battery; the sixth preset threshold is greater than the fifth preset threshold.

5. The method according to claim 1, characterized in that, Also includes: For each of the charging guns, check whether the communication with the charging gun is normal; If communication with the charging gun is abnormal, re-establish communication with the charging gun. When communication is successfully re-established, the second charging request current corresponding to the charging gun is sent to the charging gun so that the charging gun uses the second charging request current to charge the power battery. When communication reconstruction fails, the first charging request current is sent to another charging gun other than the charging gun itself, so that the other charging gun can use the first charging request current to charge the power battery.

6. The method according to claim 1, characterized in that, Also includes: When a first fault is detected in the power battery, a first charging stop message is sent to each charging gun to stop charging the power battery. For each of the charging guns, when a second charging stop message is received from the charging gun, the charging gun is stopped from charging the power battery; and the first charging request current is sent to another charging gun other than the charging gun, so that the other charging gun uses the first charging request current to charge the power battery. When a second fault is detected in the power battery and the power battery needs to be derated, the fifth charging request current required by the power battery is recalculated based on the power battery's highest temperature, lowest temperature, maximum single-cell voltage, minimum single-cell voltage, battery state of charge, and the second fault. The fifth charging request current is less than the first charging request current; When the first difference is greater than the first preset threshold, for each charging gun, according to the magnitude of the instantaneous current output capability of the charging gun and the fifth charging request current, the sixth charging request current is reallocated to the charging gun so that the sixth charging request current of each charging gun is within the range of its corresponding instantaneous current output capability. For each of the charging guns, the sixth charging request current corresponding to that charging gun is sent to that charging gun so that the charging gun uses the sixth charging request to charge the power battery.

7. A dual-gun charging control device, characterized in that, include: The first determining module is used to determine the current charging mode of the power battery by detecting the connection status of the charging gun, and to calculate the first charging request current required by the power battery based on the highest temperature, lowest temperature, maximum single cell voltage, minimum single cell voltage, and state of charge of the power battery. The identification module is used to identify the first difference in the instantaneous current output capability of the two charging guns if the current charging mode is a dual-gun charging mode, so as to determine whether the first difference is greater than a first preset threshold. The first allocation module is used to allocate a second charging request current to each charging gun according to the instantaneous current output capability of the charging gun and the first charging request current when the first difference is greater than the first preset threshold, so that the second charging request current of each charging gun is within the range of its corresponding instantaneous current output capability. The first charging module is configured to send the second charging request current corresponding to each charging gun to the charging gun, so that the charging gun uses the second charging request current to charge the power battery. Also includes: The acquisition module is used to acquire the actual instantaneous charging current of the power battery, and for each charging gun, to detect the actual instantaneous current output by the charging gun, so as to obtain the total instantaneous current actually output by the two charging guns. The calculation module is used to calculate a third difference between the actual instantaneous charging current of the power battery and the total instantaneous output current of the two charging guns when the actual instantaneous charging current of the power battery is less than the total instantaneous output current of the two charging guns, so as to determine whether the third difference is greater than a third preset threshold. The judgment module is used to determine the charging current stability of the actual instantaneous charging current of the power battery when the third difference is greater than the third preset threshold. The second determining module is used to determine the current compensation method as a first current compensation method when the charging current stability is greater than a fourth preset threshold and the first difference between the instantaneous current output capabilities of the two charging guns is not greater than a first preset threshold; and to determine the current compensation method as a second current compensation method when the first difference between the instantaneous current output capabilities of the two charging guns is greater than a first preset threshold. The first current compensation method is to use the third difference between the actual instantaneous charging current of the power battery and the total instantaneous current actually output by the two charging guns as the total compensation current, and to distribute the total compensation current equally to the two charging guns so that each charging gun receives a compensation current. The second current compensation method is to determine the charging gun with the stronger instantaneous current output capability from the two charging guns as the target charging gun, and to use the third difference between the actual instantaneous charging current of the power battery and the total instantaneous current actually output by the two charging guns as the compensation current of the target charging gun. The compensation module is used to reduce the fourth difference between the sum of the second charging request currents corresponding to the two charging guns and the actual instantaneous charging current of the power battery by using a determined current compensation method. The module performs current compensation on the second charging request current corresponding to each charging gun to obtain the third charging request current corresponding to each charging gun, so that each charging gun uses its own corresponding third charging request current to charge the power battery.

8. An electronic device, characterized in that, include: The device includes a processor, a memory, and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is in operation, the processor communicates with the memory via the bus, and the machine-readable instructions, when executed by the processor, perform the steps of the method as described in any one of claims 1 to 6.

9. 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 method as described in any one of claims 1 to 6.

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