Battery charging method and device based on bidirectional pulse current regulation and control

Abstract

The invention relates to a battery charging method and device based on bidirectional pulse current regulation and control. The method comprises the steps that charging demand information of a user, battery state information of a target battery and charging strategies of all charging working conditions of a charging pile are acquired, and based on the charging strategies of all the charging working conditions, charging processes and charging demands of all the charging working conditions are recognized; through a bidirectional current strategy, adjusting to obtain a bidirectional charging process of each charging condition, and constructing a battery model of the target battery; based on the charging demand and the bidirectional charging process corresponding to each charging working condition, battery health state information corresponding to each charging working condition is obtained through simulation through a battery model, so that a bidirectional current dynamic regulation and control strategy of each charging working condition is identified; and charging the target battery based on a target bidirectional charging process corresponding to the bidirectional current dynamic regulation and control strategy of the target charging working condition to complete the charging process of the target battery. By adopting the method, the service life of the battery can be prolonged in the charging process.

Description

Technical Field

[0001] The present application relates to the technical field of bidirectional pulse current regulation fast charging, and in particular to a battery charging method and device based on bidirectional pulse current regulation. Background Art

[0002] During the use of lithium-ion batteries, as the number of cycles and storage time increase, aging problems will inevitably occur. The external characteristics are capacity decay and internal resistance increase, which leads to the decline of stored energy and peak power, further causing life decay, affecting the performance of the battery and the safety of the lithium battery application system. However, for typical application scenarios such as fast charging at the end of the pile and V2G for vehicles, high frequency, high rate, long time and other harsh charging and discharging conditions seriously accelerate the decline of battery life. Therefore, how to improve the service life of the battery by changing the charging strategy is the current research focus.

[0003] The traditional battery charging strategy uses charging piles to directly charge electricity based on different charging needs of users, including fast charging and normal charging. However, this method charges the battery under harsh charging and discharging conditions such as high frequency, high rate, and long time, and only focuses on the battery charging efficiency and whether the battery is fully charged, which seriously accelerates the battery life decline, resulting in a lower battery life during the charging and discharging process. Summary of the invention

[0004] Based on this, it is necessary to provide a battery charging method, device, computer equipment, computer-readable storage medium and computer program product based on bidirectional pulse current regulation to address the above technical problems.

[0005] In a first aspect, the present application provides a battery charging method based on bidirectional pulse current regulation, comprising:

[0006] Obtaining the user's charging demand information, the battery status information of the target battery, and the charging strategy of each charging condition of the charging pile, and identifying the charging process of each charging condition and the charging demand corresponding to each charging condition based on the charging strategy of each charging condition;

[0007] By using a bidirectional current strategy, the charging process of each charging condition is adjusted to obtain a bidirectional charging process of each charging condition, and a battery model of the target battery is constructed based on the battery status information of the target battery;

[0008] Based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, the charging process of each charging condition is simulated through the battery model to obtain the battery health status information corresponding to each charging condition, and based on the battery health status information corresponding to each charging condition, the bidirectional current dynamic control strategy of each charging condition is identified;

[0009] The target charging condition corresponding to the charging demand information of the user is identified, and based on the target bidirectional charging process corresponding to the bidirectional current dynamic control strategy of the target charging condition, the target battery is charged to complete the charging process of the target battery.

[0010] Optionally, the charging strategy based on each of the charging conditions, identifying the charging process of each of the charging conditions, and the charging demand corresponding to each of the charging conditions, includes:

[0011] For each charging condition, query the historical charging log information of the charging pile in the charging condition and the charging restriction condition of the charging pile in the charging condition in the historical database of the charging pile, and identify the charging process information of the charging pile for each battery model based on the historical charging log information;

[0012] Based on the charging process information of the charging pile for each battery model, a sub-charging process of the charging pile for each battery model is generated, and the sub-charging process of the charging pile for all battery models is used as the charging process of the charging pile;

[0013] Based on the charging restriction condition of the charging operating condition, restriction information of a restriction type of the charging operating condition is identified, and the restriction information of the restriction type is used as the charging demand corresponding to the charging operating condition.

[0014] Optionally, the bidirectional current strategy is used to adjust the charging process of each charging condition to obtain the bidirectional charging process of each charging condition, including:

[0015] For each charging condition, based on the sub-charging process of each battery model according to the charging condition, identifying each charging parameter information of each sub-charging process;

[0016] Based on the bidirectional current strategy and each of the charging parameter information, generate bidirectional charging parameter information corresponding to each of the charging parameter information, and based on each of the bidirectional charging parameter information, generate a sub-bidirectional charging process corresponding to each sub-charging process;

[0017] The sub-bidirectional charging processes of all battery models are used as the charging process of the charging condition.

[0018] Optionally, constructing a battery model of the target battery based on the battery status information of the target battery includes:

[0019] Based on the battery status information of the target battery, identifying the target battery model of the target battery and the battery aging degree of the target battery;

[0020] In the model database, an initial battery model of the target battery model is retrieved, and based on the battery aging degree of the target battery, model parameters in the initial battery model are adjusted to obtain a battery model of the target battery.

[0021] Optionally, based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, the charging process of each charging condition is simulated through the battery model to obtain the battery health status information corresponding to each charging condition, including:

[0022] For each charging condition, based on the charging demand corresponding to the charging condition, identifying the charging adjustment restriction condition of the target bidirectional charging process corresponding to the target battery model, and generating each simulated bidirectional charging process of the battery model based on the charging adjustment restriction condition of the target bidirectional charging process;

[0023] Based on each of the simulated bidirectional charging processes, the charging process of the charging condition is simulated through the battery model to obtain the sub-battery health status information corresponding to each simulated bidirectional charging process;

[0024] The sub-battery health status information corresponding to all simulated bidirectional charging processes is used as the battery health status information corresponding to the charging condition.

[0025] Optionally, the identifying the bidirectional current dynamic control strategy for each charging condition based on the battery health status information corresponding to each charging condition includes:

[0026] For each simulated bidirectional charging process, identify the key factor value of each key factor type of the simulated bidirectional charging process, and based on the key factor value of each key factor type corresponding to each simulated bidirectional charging process and the sub-battery health status information of each simulated bidirectional charging process, identify the impact information between each key factor type and battery aging;

[0027] Based on the influence information between each key factor type and battery aging, a bidirectional current dynamic control strategy for the charging condition is identified.

[0028] Optionally, the method further includes:

[0029] Acquire the shelf battery state of the target battery in the battery shelf stage and the battery model of the target battery, and based on the shelf battery state, simulate the battery health state change process of the target battery under the conditions of each bidirectional current strategy in the battery shelf stage through each bidirectional current strategy of the battery model, and obtain the battery health state change distribution information of each bidirectional current factor of the target battery in the battery shelf stage;

[0030] Based on the battery health status change distribution information of each of the bidirectional current factors, a target bidirectional current strategy for the target battery in the battery shelving stage is generated, and based on the target bidirectional current strategy, battery maintenance processing is performed on the target battery in the battery shelving state to complete the battery maintenance task of the target battery in the battery shelving stage.

[0031] In a second aspect, the present application also provides a battery charging device based on bidirectional pulse current regulation, comprising:

[0032] An acquisition module is used to acquire the user's charging demand information, the battery status information of the target battery, and the charging strategy of each charging condition of the charging pile, and based on the charging strategy of each charging condition, identify the charging process of each charging condition and the charging demand corresponding to each charging condition;

[0033] A construction module, used to adjust the charging process of each charging condition through a bidirectional current strategy, obtain the bidirectional charging process of each charging condition, and construct a battery model of the target battery based on the battery status information of the target battery;

[0034] an identification module, for simulating the charging process of each charging condition through the battery model based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, obtaining the battery health status information corresponding to each charging condition, and identifying the bidirectional current dynamic control strategy of each charging condition based on the battery health status information corresponding to each charging condition;

[0035] The charging module is used to identify the target charging condition corresponding to the user's charging demand information, and based on the target bidirectional charging process corresponding to the bidirectional current dynamic control strategy of the target charging condition, charge the target battery to complete the charging process of the target battery.

[0036] Optionally, the acquisition module is specifically used to:

[0037] For each charging condition, query the historical charging log information of the charging pile in the charging condition and the charging restriction condition of the charging pile in the charging condition in the historical database of the charging pile, and identify the charging process information of the charging pile for each battery model based on the historical charging log information;

[0038] Based on the charging process information of the charging pile for each battery model, a sub-charging process of the charging pile for each battery model is generated, and the sub-charging process of the charging pile for all battery models is used as the charging process of the charging pile;

[0039] Based on the charging restriction condition of the charging operating condition, restriction information of a restriction type of the charging operating condition is identified, and the restriction information of the restriction type is used as the charging demand corresponding to the charging operating condition.

[0040] Optionally, the building module is specifically used to:

[0041] For each charging condition, based on the sub-charging process of each battery model according to the charging condition, identifying each charging parameter information of each sub-charging process;

[0042] Based on the bidirectional current strategy and each of the charging parameter information, generate bidirectional charging parameter information corresponding to each of the charging parameter information, and based on each of the bidirectional charging parameter information, generate a sub-bidirectional charging process corresponding to each sub-charging process;

[0043] The sub-bidirectional charging processes of all battery models are used as the charging process of the charging condition.

[0044] Optionally, the building module is specifically used to:

[0045] Based on the battery status information of the target battery, identifying the target battery model of the target battery and the battery aging degree of the target battery;

[0046] In the model database, an initial battery model of the target battery model is retrieved, and based on the battery aging degree of the target battery, model parameters in the initial battery model are adjusted to obtain a battery model of the target battery.

[0047] Optionally, the identification module is specifically used to:

[0048] For each charging condition, based on the charging demand corresponding to the charging condition, identifying the charging adjustment restriction condition of the target bidirectional charging process corresponding to the target battery model, and generating each simulated bidirectional charging process of the battery model based on the charging adjustment restriction condition of the target bidirectional charging process;

[0049] Based on each of the simulated bidirectional charging processes, the charging process of the charging condition is simulated through the battery model to obtain the sub-battery health status information corresponding to each simulated bidirectional charging process;

[0050] The sub-battery health status information corresponding to all simulated bidirectional charging processes is used as the battery health status information corresponding to the charging condition.

[0051] Optionally, the identification module is specifically used to:

[0052] For each simulated bidirectional charging process, identify the key factor value of each key factor type of the simulated bidirectional charging process, and based on the key factor value of each key factor type corresponding to each simulated bidirectional charging process and the sub-battery health status information of each simulated bidirectional charging process, identify the impact information between each key factor type and battery aging;

[0053] Based on the influence information between each key factor type and battery aging, a bidirectional current dynamic control strategy for the charging condition is identified.

[0054] Optionally, the device further comprises:

[0055] A simulation module, used to obtain the shelf battery state of the target battery in the battery shelf stage and the battery model of the target battery, and based on the shelf battery state, simulate the battery health state change process of the target battery under the conditions of each bidirectional current strategy in the battery shelf stage through each bidirectional current strategy of the battery model, and obtain the battery health state change distribution information of each bidirectional current factor of the target battery in the battery shelf stage;

[0056] A generation module is used to generate a target bidirectional current strategy for the target battery in the battery shelving stage based on the battery health status change distribution information of each bidirectional current factor, and based on the target bidirectional current strategy, perform battery maintenance processing on the target battery in the battery shelving state to complete the battery maintenance task of the target battery in the battery shelving stage.

[0057] In a third aspect, the present application provides a computer device, wherein the computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of any one of the methods in the first aspect are implemented.

[0058] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of any one of the methods in the first aspect are implemented.

[0059] In a fifth aspect, the present application provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the steps of any one of the methods in the first aspect are implemented.

[0060] The battery charging method and device based on bidirectional pulse current control obtain the user's charging demand information, the battery status information of the target battery, and the charging strategy of each charging condition of the charging pile, and identify the charging process of each charging condition and the charging demand corresponding to each charging condition based on the charging strategy of each charging condition; adjust the charging process of each charging condition through the bidirectional current strategy to obtain the bidirectional charging process of each charging condition, and construct the battery model of the target battery based on the battery status information of the target battery; based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, simulate the charging process of each charging condition through the battery model to obtain the battery health status information corresponding to each charging condition, and identify the bidirectional current dynamic control strategy of each charging condition based on the battery health status information corresponding to each charging condition; identify the target charging condition corresponding to the user's charging demand information, and based on the target bidirectional charging process corresponding to the bidirectional current dynamic control strategy of the target charging condition, charge the target battery to complete the charging process of the target battery. This solution replaces the traditional DC transmission strategy with a bidirectional current strategy, so that the target battery can be charged with a bidirectional current based on pulse conditions. Since the bidirectional current increases the current in both the forward and reverse directions, it replaces the traditional unidirectional charging method, so that the target battery can be charged and discharged under bidirectional current conditions under set conditions. After modeling the battery, this solution simulates and implements different bidirectional charging processes to analyze the impact of different bidirectional charging currents on the life cycle of the target battery, so as to select the bidirectional current dynamic control strategy corresponding to the target bidirectional charging current suitable for the target battery. Finally, this solution is a classification study of different charging conditions to ensure that under different charging conditions and static states, the impact of continuous high-frequency, high-rate, and long-term charging and discharging on the battery life cycle can be improved, thereby comprehensively improving the safety protection effect of the charging and discharging process on the battery and effectively extending the battery life. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0062] Figure 1 It is a schematic flow chart of a battery charging method based on bidirectional pulse current control in one embodiment;

[0063] Figure 2Schematic diagram of experimental data of a battery model simulation process for controlling bidirectional current rate change in one embodiment

[0064] Figure 3 Schematic diagram of experimental data of a battery model simulation process for controlling bidirectional current frequency change in one embodiment

[0065] Figure 4 Schematic diagram of experimental data of a battery model simulation process for controlling the change of bidirectional current loading time in one embodiment

[0066] Figure 5 A schematic diagram of a process flow of a battery charging example based on bidirectional pulse current regulation in one embodiment;

[0067] Figure 6 is a structural block diagram of a battery charging device based on bidirectional pulse current control in one embodiment;

[0068] Figure 7 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0069] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0070] The battery charging method based on bidirectional pulse current regulation provided in the embodiment of the present application can be applied to the application environment where the vehicle-mounted battery is charged by a charging pile. Among them, the method can be applied to the terminal, can also be applied to the server, can also be applied to the system including the terminal and the server, and is realized through the interaction between the terminal and the server. Among them, the terminal can be, but is not limited to, various personal computers, laptops, etc. Among them, after the terminal models the battery, it simulates and implements different bidirectional charging processes to analyze the impact of different bidirectional charging currents on the life cycle of the target battery, so as to screen the bidirectional current dynamic regulation strategy corresponding to the target bidirectional charging current suitable for the target battery. Finally, this scheme is a classification study conducted through different charging conditions, so as to ensure that under different charging conditions and static conditions, the problem of the impact of continuous high frequency, high rate, and long-term charging and discharging on the battery life cycle can be improved, thereby comprehensively improving the safety protection effect of the charging and discharging process on the battery, and effectively extending the service life of the battery.

[0071] In an exemplary embodiment, Figure 1 As shown, a battery charging method based on bidirectional pulse current regulation is provided, and the method is applied to a terminal as an example for explanation, including the following steps S101 to S104. Among them:

[0072] Step S101, obtaining the user's charging demand information, the battery status information of the target battery, and the charging strategy of each charging condition of the charging pile, and based on the charging strategy of each charging condition, identifying the charging process of each charging condition and the charging demand corresponding to each charging condition.

[0073] In this embodiment, the terminal obtains the user's charging demand information in response to the user's selection operation, wherein the user's charging demand information includes the user's demand information for the charging condition, that is, the target charging condition selected by the user, and then the terminal detects the battery status information of the target battery to be charged by the user through the connection information between the battery. Among them, the battery status information of the target battery includes the current remaining power of the target battery and the current capacity threshold of the target battery. Then, the terminal queries the charging strategy of each charging condition in the database of the charging device. Among them, the charging condition includes but is not limited to ordinary charging condition, fast charging condition, and vehicle charging condition, wherein the ordinary charging condition is to charge the battery through normal current value and voltage value, and the time is long, which is suitable for charging when the battery is not in a hurry to use; the fast charging condition is to charge the battery through high frequency, high rate current value, and high voltage value charging method within a fixed time, and the charging time is short; the vehicle charging condition is to charge while using the battery in the battery use state, at this time, the battery will simultaneously bear the simultaneous loss caused by charging and discharging, which is suitable for instant charging in office, leisure, entertainment and other environments. Among them, the main loss of the battery under normal charging conditions comes from the loss of the battery due to long-term charging; the main loss of the battery under fast charging conditions comes from the loss of the battery due to high frequency, large rate current value, and high voltage value; the loss of the battery under vehicle charging conditions is the loss of the battery due to frequent charging and discharging. Finally, the terminal identifies the charging process of each charging condition and the charging requirements corresponding to each charging condition based on the charging strategy of each charging condition. Among them, the charging requirements corresponding to the charging condition are the charging restriction information of the charging condition. For example, the charging restriction information of the normal charging condition is to limit the upper limit of the charging current value and the charging fluctuation frequency range. The charging restrictions of the fast charging condition are charging time restrictions and charging amount restrictions. The charging restriction information of the vehicle charging condition is charging rate restrictions, etc. The specific identification process will be described in detail later.

[0074] Step S102, adjusting the charging process of each charging condition through a bidirectional current strategy, obtaining a bidirectional charging process of each charging condition, and constructing a battery model of the target battery based on the battery status information of the target battery.

[0075] In this embodiment, the terminal adjusts the charging process of each charging condition through a bidirectional current strategy, obtains a bidirectional charging process for each charging condition, and constructs a battery model of the target battery based on the battery status information of the target battery. The bidirectional charging process is to add a certain bidirectional charging process to some process stages of the traditional unidirectional charging process, thereby reducing the high-frequency, high-rate, and long-term charging problems of the entire charging process. For example, the fast charging condition intersperses a bidirectional current with a certain strategy on the basis of charging the same amount of electricity in the same time to obtain a bidirectional charging process for the fast charging condition; the vehicle charging condition intersperses a bidirectional current with a certain strategy in the charging process when the electric vehicle idle storage state is met, and obtains a bidirectional charging process for the vehicle charging condition. Among them, the bidirectional charging process also needs to ensure that the target battery always meets a certain SOC (State of Charge) range. The process of building a battery model for the target battery will be described in detail later.

[0076] Step S103, based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, the charging process of each charging condition is simulated through the battery model to obtain the battery health status information corresponding to each charging condition, and based on the battery health status information corresponding to each charging condition, the bidirectional current dynamic control strategy of each charging condition is identified.

[0077] In this embodiment, based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, the terminal simulates the charging process of each charging condition through the battery model, obtains the battery health status information corresponding to each charging condition, and identifies the bidirectional current dynamic control strategy for each charging condition based on the battery health status information corresponding to each charging condition. Among them, the bidirectional current dynamic control strategy is to apply bidirectional current with different current data at different process stages of the bidirectional charging process, so as to ensure that the entire bidirectional charging process can reduce the degree of damage to the target battery and improve the durability of the battery. The specific simulation process will be described in detail later.

[0078] Step S104, identifying the target charging condition corresponding to the user's charging demand information, and charging the target battery based on the target bidirectional charging process corresponding to the bidirectional current dynamic control strategy of the target charging condition to complete the charging process of the target battery.

[0079] In this embodiment, the terminal identifies the target charging condition corresponding to the user's charging demand information, and charges the target battery based on the target bidirectional charging process corresponding to the bidirectional current dynamic control strategy of the target charging condition to complete the charging process of the target battery.

[0080] Based on the above scheme, after modeling the battery, different bidirectional charging processes are simulated and implemented to analyze the impact of different bidirectional charging currents on the life cycle of the target battery, so as to screen the bidirectional current dynamic control strategy corresponding to the target bidirectional charging current suitable for the target battery. Finally, this scheme is a classification study of different charging conditions to ensure that under different charging conditions and static states, the impact of continuous high-frequency, high-rate, and long-term charging and discharging on the battery life cycle can be improved, thereby comprehensively improving the safety protection effect of the charging and discharging process on the battery and effectively extending the battery life.

[0081] Optionally, based on the charging strategy of each charging condition, the charging process of each charging condition and the charging demand corresponding to each charging condition are identified, including: for each charging condition, in the historical database of the charging pile, querying the historical charging log information of the charging pile in the charging condition and the charging restriction conditions of the charging pile in the charging condition, and based on the historical charging log information, identifying the charging process information of the charging pile for each battery model; based on the charging process information of the charging pile for each battery model, generating a sub-charging process of the charging pile for each battery model, and using the sub-charging process of the charging pile for all battery models as the charging process of the charging pile; based on the charging restriction conditions of the charging condition, identifying the restriction information of the restriction type of the charging condition, and using the restriction information of the restriction type as the charging demand corresponding to the charging condition.

[0082] In this embodiment, for each charging condition, the terminal queries the historical charging log information of the charging pile in the charging condition and the charging restriction conditions of the charging pile in the charging condition in the historical database of the charging pile, and identifies the charging process information of the charging pile for each battery model based on the historical charging log information. Among them, the historical charging log information includes the charging log information of each battery model, and then the charging process information corresponding to the charging log information with the most identical charging processes is selected from the charging log information of each battery model as the charging process information of the battery model. Among them, the difference between different battery models lies in the different applicable current value ranges, different applicable voltage value ranges, different battery capacities, and different ratios of charging rate to current value and voltage value, etc. Therefore, the discussion by battery model can ensure the comprehensiveness and accuracy of the analysis of the target battery. Then, based on the charging process information of the charging pile for each battery model, the terminal generates the sub-charging process of the charging pile for each battery model, and uses the sub-charging process of the charging pile for all battery models as the charging process of the charging pile. Finally, the terminal identifies the restriction information of the restriction type of the charging condition based on the charging restriction condition of the charging condition, and uses the restriction information of the restriction type as the charging demand corresponding to the charging condition. The restriction types include current restriction type, voltage restriction type, charging time restriction type, charging power restriction type, and charging rate restriction type.

[0083] Based on the above solution, the charging process information of each battery model is identified through historical charging log information, which improves the comprehensiveness and accuracy of identifying the charging process information. Then, the terminal analyzes the restriction information of each restriction type of each charging condition to identify the charging demand corresponding to the charging condition, which improves the comprehensiveness of the analysis of different charging conditions.

[0084] Optionally, the charging process of each charging condition is adjusted through a bidirectional current strategy to obtain a bidirectional charging process for each charging condition, including: for each charging condition, based on the sub-charging process for each battery model according to the charging condition, identifying each charging parameter information of each sub-charging process; based on the bidirectional current strategy and each charging parameter information, generating bidirectional charging parameter information corresponding to each charging parameter information, and based on each bidirectional charging parameter information, generating a sub-bidirectional charging process corresponding to each sub-charging process; using the sub-bidirectional charging processes of all battery models as the charging process of the charging condition.

[0085] In this embodiment, the terminal identifies each charging parameter information of each sub-charging process for each charging condition based on the sub-charging process of each battery model under the charging condition. The charging parameter information includes, but is not limited to, parameter information such as current frequency, current rate, current loading time, current voltage value, etc. The charging parameter information of the sub-charging process is the charging parameter information of each charging stage of the sub-charging process. Each charging stage is a time stage marked in advance by the staff in each sub-charging process. Then, the terminal generates bidirectional charging parameter information corresponding to each charging parameter information based on the bidirectional current strategy and each charging parameter information, and generates a sub-bidirectional charging process corresponding to each sub-charging process based on each bidirectional charging parameter information. The process of adding bidirectional current in this step is the process of replacing unidirectional current with all bidirectional currents. The charging parameter information of each current of the bidirectional current is half of that of the unidirectional current. Finally, the terminal uses the sub-bidirectional charging process of all battery models as the charging process of the charging condition. The bidirectional current strategy is to change the unidirectional current to the bidirectional current, and divide the charging parameter information of the electric box current into the bidirectional current to obtain the charging parameter information of the bidirectional current.

[0086] Based on the above scheme, the charging parameter information of each charging stage of the sub-charging process is identified and converted into a bidirectional current, thereby improving the conversion accuracy of the bidirectional current.

[0087] Optionally, based on the battery status information of the target battery, a battery model of the target battery is constructed, including: based on the battery status information of the target battery, identifying the target battery model and the battery aging degree of the target battery; in a model database, retrieving the initial battery model of the target battery model, and based on the battery aging degree of the target battery, adjusting the model parameters in the initial battery model to obtain the battery model of the target battery.

[0088] In this embodiment, the terminal identifies the target battery model of the target battery and the battery aging degree of the target battery based on the battery status information of the target battery. The battery aging degree is the ratio between the current maximum capacity of the target battery and the standard maximum capacity of the target battery. In the model database, the initial battery model of the target battery model is retrieved, and based on the battery aging degree of the target battery, the model parameters in the initial battery model are adjusted to obtain the battery model of the target battery. The adjustment process is that the terminal identifies the battery capacity parameters corresponding to different battery aging degrees in the model database, thereby replacing the battery capacity parameters in the initial battery model with the battery capacity parameters to obtain the battery model. The model database includes battery models obtained by the staff based on model construction of each battery model. The battery model includes multiple battery parameters, such as maximum capacity parameters, input current range parameters, input voltage range parameters, current rate parameters, current frequency parameters, current loading time parameters, etc.

[0089] Based on the above solution, the battery model of the target battery is constructed by identifying the battery model and battery aging degree of the target battery, thereby improving the accuracy of constructing the battery model.

[0090] Optionally, based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, the charging process of each charging condition is simulated through a battery model to obtain battery health status information corresponding to each charging condition, including: for each charging condition, based on the charging demand corresponding to the charging condition, identifying the charging adjustment restriction conditions of the target bidirectional charging process corresponding to the target battery model, and based on the charging adjustment restriction conditions of the target bidirectional charging process, generating each simulated bidirectional charging process of the battery model; based on each simulated bidirectional charging process, simulating the charging process of the charging condition through a battery model to obtain sub-battery health status information corresponding to each simulated bidirectional charging process; using the sub-battery health status information corresponding to all simulated bidirectional charging processes as the battery health status information corresponding to the charging condition.

[0091] In this embodiment, for each charging condition, the terminal identifies the charging adjustment restriction conditions of the target bidirectional charging process corresponding to the target battery model based on the charging demand corresponding to the charging condition, and generates each simulated bidirectional charging process of the battery model based on the charging adjustment restriction conditions of the target bidirectional charging process. The process of generating each simulated bidirectional charging current of the battery model is to adjust the data of each key factor affecting the battery life based on the charging adjustment restriction conditions to obtain each simulated bidirectional charging current.

[0092] Then, based on each simulated bidirectional charging process, the terminal simulates the charging process of the charging condition through the battery model, and obtains the sub-battery health status information corresponding to each simulated bidirectional charging process. Finally, the terminal uses the sub-battery health status information corresponding to all simulated bidirectional charging processes as the battery health status information corresponding to the charging condition. Among them, the sub-battery health status information corresponding to the simulated bidirectional charging process obtained by the simulated charging condition of this scheme is the SEI interface (solid electrolyte interface) side reaction rate of the target battery at different charging time points, and the lithium dendrite growth side reaction rate of the target battery at different charging time points. Among them, according to experimental research, the main characteristics of battery aging and life decline are the growth of the negative electrode SEI film (i.e., solid electrolyte interface film) and the LLI (loss of lithium ion inventory, lithium ion loss / battery capacity decay) induced by the large-scale lithium dendrite growth at the end of life decline. Therefore, the faster the growth rate of the SEI film and the faster the growth of lithium dendrites, the faster the battery aging / life decline rate.

[0093] Based on the above scheme, each simulated bidirectional charging process is generated through the restriction information of each charging condition, which improves the comprehensiveness and accuracy of the analysis of battery health status information.

[0094] Optionally, based on the battery health status information corresponding to each charging condition, the bidirectional current dynamic control strategy for each charging condition is identified, including: for each simulated bidirectional charging process, identifying the key factor values ​​of each key factor type of the simulated bidirectional charging process, and based on the key factor values ​​of each key factor type corresponding to each simulated bidirectional charging process and the sub-battery health status information of each simulated bidirectional charging process, identifying the impact information between each key factor type and battery aging; based on the impact information between each key factor type and battery aging, identifying the bidirectional current dynamic control strategy for the charging condition.

[0095] In this embodiment, the terminal identifies the key factor value of each key factor type of the simulated bidirectional charging process for each simulated bidirectional charging process. The key factor value of the key factor type here is the key factor type corresponding to each key factor data in the previous step, and the key factor value of the key factor type.

[0096] The terminal identifies the impact information between each key factor type and battery aging based on the key factor values ​​of each key factor type corresponding to each simulated bidirectional charging process and the sub-battery health status information of each simulated bidirectional charging process. The impact information includes the ratio between the change in the key factor value of each key factor type and the change in the battery life decay value at each charging stage. The battery life decay value is characterized by the SEI interface (solid electrolyte interface) side reaction rate and the lithium dendrite growth side reaction rate in the liquid lithium-ion battery. Thus, the key factor values ​​of each key factor type with the lowest side reaction rate in each charging stage are screened, thereby improving the battery durability in each charging stage. Finally, the terminal identifies the bidirectional current dynamic control strategy of the charging condition based on the impact information between each key factor type and battery aging. The bidirectional current dynamic control strategy is the key factor value of each bidirectional current in each key factor type sorted in the order of each charging stage.

[0097] During the experimental study, the bidirectional pulse experimental group can better improve the re-embedding process of the negative electrode active Li+, and there is no obvious lithium dendrite growth at the negative electrode, which effectively reduces the LLI (lithium ion loss, loss of lithiumion inventory) of the battery throughout its life cycle, so that the battery life is improved and a high capacity retention rate is maintained. The control group did not frequently deintercalate lithium during the fixed SOC storage period, and the positive electrode LAM (loss of active material) was small, but obvious lithium dendrite precipitation was found on the negative electrode surface, indicating that there was obvious lithium dendrite growth on the surface of the control group, showing large-scale lithium precipitation induced severe LLI. Due to frequent lithium deintercalation, the positive electrode LAM of the experimental group increased slightly, but by regulating the active lithium on the negative electrode surface, the LLI was reduced, effectively offsetting the influence of the positive electrode LAM, and the capacity retention rate was high relative to the control group. In summary, based on medium and high frequency bidirectional pulses, the influence of battery polarization can be effectively reduced by regulating the battery voltage and negative electrode potential, so that the SEI side reaction and lithium precipitation side reaction rates dominated by internal decay are always lower than those of the control group, thereby delaying the battery capacity decay.

[0098] Based on the above scheme, through the classification research of different charging conditions, it is ensured that under different charging conditions, the problems of continuous high-frequency, high-rate and long-time charging and discharging can be avoided, thereby comprehensively improving the safety protection effect of the battery during the charging and discharging process.

[0099] Optionally, the method also includes: acquiring a shelved battery state of the target battery during the battery shelving stage, and a battery model of the target battery, and based on the shelved battery state, simulating the battery health state change process of the target battery under the conditions of each bidirectional current strategy of the battery model during the battery shelving stage, and obtaining the battery health state change distribution information of each bidirectional current factor of the target battery during the battery shelving stage; based on the battery health state change distribution information of each bidirectional current factor, generating a target bidirectional current strategy for the target battery during the battery shelving stage, and based on the target bidirectional current strategy, performing battery maintenance processing on the target battery in the battery shelving state, and completing the battery maintenance task of the target battery during the battery shelving stage.

[0100] In this embodiment, when the target battery is in a battery shelving state, the terminal obtains the current battery state of the target battery, and uses the current battery state as the shelved battery state of the target battery. The battery shelving stage is a time period outside the normal charging and discharging drive of the battery. The shelved battery state characterizes the operation mode of the internal current of the target battery during the battery shelving stage. Then, in response to the model upload operation of the staff, the terminal obtains the battery model corresponding to the operation mode of the internal current of the target battery during the battery shelving stage.

[0101] Among them, the bidirectional current strategy includes the factor values ​​of bidirectional current factors such as the SOC area, bidirectional current frequency, bidirectional current rate, and bidirectional current loading time of the target battery. Then, the terminal adjusts the factor value of each bidirectional current factor respectively through the principle of single variable method to obtain each bidirectional current strategy. The terminal uses the idle battery state of the target battery as a comparison group and each bidirectional current strategy as an experimental group. Through the battery model of the target battery, the terminal simulates the battery health state change process of the target battery in each bidirectional current strategy.

[0102] The specific process is as follows:

[0103] Step 1: Adjust the SOC area. After the battery completes x times of simulated CCCV / DC normal use, adjust the battery's SOC to 10%, (50%) 70% and 90% SOC areas respectively, where 10% SOC simulates the regulation effect under a lower SOC, 50% and 70% SOC simulate the regulation effect under medium SOC, and 90% SOC simulates the regulation effect under a higher SOC.

[0104] Step 2: Adjust the bidirectional current magnification. Based on Step 1, load a certain strategy of battery bidirectional current magnification, such as Figure 2 As shown: 0.1C, 0.5C, 1C, 2C, 4C and other different magnifications simulate the current size under bidirectional pulse.

[0105] Step 3: Adjust the bidirectional current frequency. Based on Step 2, load a certain strategy of battery bidirectional current frequency, such as Figure 3 As shown: 1 / 120 ~ 1 Hz several different time intervals simulate the frequency of the current under bidirectional pulses.

[0106] Step 4: Adjust the bidirectional current loading time, such as Figure 4 Based on Step 3, a certain strategy of battery bidirectional current time is loaded: the total bidirectional current loading time is 0.5 times, 1 times and 1.5 times of the CCCV / DC usage time respectively.

[0107] Step 5: After adjusting the experimental group, adjust the control group. After the battery completes x times of simulated CCCV / DC normal use, adjust the battery SOC to 0% to simulate the optimal life retention condition. Then, set aside 0.5 times, 1 times, and 1.5 times the CCCV / DC usage time respectively to compare the life decay of the control group with that of the bidirectional current control group.

[0108] Then, the terminal distributes and sorts the battery health status change process of each bidirectional current strategy obtained from the above experiment according to each bidirectional current factor, and obtains the battery health status change distribution information of each bidirectional current factor. Finally, based on the battery health status change distribution information of each bidirectional current factor, the terminal selects the target factor value such as current frequency, current rate, current loading time, etc. that minimizes the battery degradation, and uses the target factor value of each bidirectional current factor as the target bidirectional current strategy for the target battery in the battery shelving stage, and based on the target bidirectional current strategy, performs battery maintenance processing on the target battery in the battery shelving state, completing the battery maintenance task of the target battery in the battery shelving stage.

[0109] Based on the above scheme, by applying pulse charge and discharge currents of different cycles during the battery storage period, the capacity attenuation during the battery storage period is reduced, thereby improving the battery life during the battery storage period.

[0110] The present application also provides an example of battery charging based on bidirectional pulse current regulation, such as Figure 5 As shown, the specific processing process includes the following steps:

[0111] Step S501, obtaining the user's charging demand information, the battery status information of the target battery, and the charging strategy of each charging condition of the charging pile.

[0112] Step S502, for each charging condition, query the historical charging log information of the charging pile in the charging condition and the charging restriction conditions of the charging pile in the charging condition in the historical database of the charging pile, and identify the charging process information of the charging pile for each battery model based on the historical charging log information.

[0113] Step S503, based on the charging process information of the charging pile for each battery model, generate a sub-charging process of the charging pile for each battery model, and use the sub-charging process of the charging pile for all battery models as the charging process of the charging pile.

[0114] Step S504: based on the charging restriction condition of the charging condition, identifying restriction information of the restriction type of the charging condition, and using the restriction information of the restriction type as the charging demand corresponding to the charging condition.

[0115] Step S505 , for each charging condition, based on the sub-charging process for each battery model according to the charging condition, identifying each charging parameter information of each sub-charging process.

[0116] Step S506, based on the bidirectional current strategy and each charging parameter information, generating bidirectional charging parameter information corresponding to each charging parameter information, and based on each bidirectional charging parameter information, generating a sub-bidirectional charging process corresponding to each sub-charging process.

[0117] Step S507: The sub-bidirectional charging processes of all battery models are used as the charging process of the charging condition.

[0118] Step S508 , identifying the target battery model of the target battery and the battery aging degree of the target battery based on the battery status information of the target battery.

[0119] Step S509: retrieve the initial battery model of the target battery model from the model database, and adjust the model parameters in the initial battery model based on the battery aging degree of the target battery to obtain the battery model of the target battery.

[0120] Step S510, for each charging condition, based on the charging demand corresponding to the charging condition, identifying the charging adjustment restriction conditions of the target bidirectional charging process corresponding to the target battery model, and based on the charging adjustment restriction conditions of the target bidirectional charging process, generating each simulated bidirectional charging process of the battery model.

[0121] Step S511, based on each simulated bidirectional charging process, the charging process of the charging condition is simulated through the battery model to obtain the sub-battery health status information corresponding to each simulated bidirectional charging process.

[0122] Step S512: The sub-battery health status information corresponding to all simulated bidirectional charging processes is used as the battery health status information corresponding to the charging condition.

[0123] Step S513, for each simulated bidirectional charging process, identify the key factor values ​​of each key factor type of the simulated bidirectional charging process, and based on the key factor values ​​of each key factor type corresponding to each simulated bidirectional charging process and the sub-battery health status information of each simulated bidirectional charging process, identify the impact information between each key factor type and battery aging.

[0124] Step S514: identifying a bidirectional current dynamic control strategy for a charging condition based on the impact information between each key factor type and battery aging.

[0125] Step S515, identifying the target charging condition corresponding to the user's charging demand information, and charging the target battery based on the target bidirectional charging process corresponding to the bidirectional current dynamic control strategy of the target charging condition to complete the charging process of the target battery.

[0126] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0127] Based on the same inventive concept, the embodiment of the present application also provides a battery charging device based on bidirectional pulse current regulation for implementing the battery charging method based on bidirectional pulse current regulation involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more embodiments of the battery charging device based on bidirectional pulse current regulation provided below can refer to the limitations of the battery charging method based on bidirectional pulse current regulation above, and will not be repeated here.

[0128] In an exemplary embodiment, Figure 6 As shown, a battery charging device based on bidirectional pulse current regulation is provided, including: an acquisition module 610, a construction module 620, an identification module 630 and a charging module 640, wherein:

[0129] The acquisition module 610 is used to acquire the user's charging demand information, the battery status information of the target battery, and the charging strategy of each charging condition of the charging pile, and identify the charging process of each charging condition and the charging demand corresponding to each charging condition based on the charging strategy of each charging condition;

[0130] A construction module 620 is used to adjust the charging process of each charging condition through a bidirectional current strategy, obtain a bidirectional charging process of each charging condition, and construct a battery model of the target battery based on the battery status information of the target battery;

[0131] An identification module 630 is used to simulate the charging process of each charging condition through the battery model based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, obtain the battery health status information corresponding to each charging condition, and identify the bidirectional current dynamic control strategy of each charging condition based on the battery health status information corresponding to each charging condition;

[0132] The charging module 640 is used to identify the target charging condition corresponding to the user's charging demand information, and based on the target bidirectional charging process corresponding to the bidirectional current dynamic control strategy of the target charging condition, charge the target battery to complete the charging process of the target battery.

[0133] Optionally, the acquisition module 610 is specifically configured to:

[0134] For each charging condition, query the historical charging log information of the charging pile in the charging condition and the charging restriction condition of the charging pile in the charging condition in the historical database of the charging pile, and identify the charging process information of the charging pile for each battery model based on the historical charging log information;

[0135] Based on the charging process information of the charging pile for each battery model, a sub-charging process of the charging pile for each battery model is generated, and the sub-charging process of the charging pile for all battery models is used as the charging process of the charging pile;

[0136] Based on the charging restriction condition of the charging operating condition, restriction information of a restriction type of the charging operating condition is identified, and the restriction information of the restriction type is used as the charging demand corresponding to the charging operating condition.

[0137] Optionally, the construction module 620 is specifically used to:

[0138] For each charging condition, based on the sub-charging process of each battery model according to the charging condition, identifying each charging parameter information of each sub-charging process;

[0139] Based on the bidirectional current strategy and each of the charging parameter information, generate bidirectional charging parameter information corresponding to each of the charging parameter information, and based on each of the bidirectional charging parameter information, generate a sub-bidirectional charging process corresponding to each sub-charging process;

[0140] The sub-bidirectional charging processes of all battery models are used as the charging process of the charging condition.

[0141] Optionally, the construction module 620 is specifically used to:

[0142] Based on the battery status information of the target battery, identifying the target battery model of the target battery and the battery aging degree of the target battery;

[0143] In the model database, an initial battery model of the target battery model is retrieved, and based on the battery aging degree of the target battery, model parameters in the initial battery model are adjusted to obtain a battery model of the target battery.

[0144] Optionally, the identification module 630 is specifically configured to:

[0145] For each charging condition, based on the charging demand corresponding to the charging condition, identifying the charging adjustment restriction condition of the target bidirectional charging process corresponding to the target battery model, and generating each simulated bidirectional charging process of the battery model based on the charging adjustment restriction condition of the target bidirectional charging process;

[0146] Based on each of the simulated bidirectional charging processes, the charging process of the charging condition is simulated through the battery model to obtain the sub-battery health status information corresponding to each simulated bidirectional charging process;

[0147] The sub-battery health status information corresponding to all simulated bidirectional charging processes is used as the battery health status information corresponding to the charging condition.

[0148] Optionally, the identification module 630 is specifically configured to:

[0149] For each simulated bidirectional charging process, identify the key factor value of each key factor type of the simulated bidirectional charging process, and based on the key factor value of each key factor type corresponding to each simulated bidirectional charging process and the sub-battery health status information of each simulated bidirectional charging process, identify the impact information between each key factor type and battery aging;

[0150] Based on the influence information between each key factor type and battery aging, a bidirectional current dynamic control strategy for the charging condition is identified.

[0151] Optionally, the device further comprises:

[0152] A simulation module, used to obtain the shelf battery state of the target battery in the battery shelf stage and the battery model of the target battery, and based on the shelf battery state, simulate the battery health state change process of the target battery under the conditions of each bidirectional current strategy in the battery shelf stage through each bidirectional current strategy of the battery model, and obtain the battery health state change distribution information of each bidirectional current factor of the target battery in the battery shelf stage;

[0153] A generation module is used to generate a target bidirectional current strategy for the target battery in the battery shelving stage based on the battery health status change distribution information of each bidirectional current factor, and based on the target bidirectional current strategy, perform battery maintenance processing on the target battery in the battery shelving state to complete the battery maintenance task of the target battery in the battery shelving stage.

[0154] Each module in the battery charging device based on bidirectional pulse current control can be implemented in whole or in part by software, hardware and their combination. Each module can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0155] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 7As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a battery charging method based on bidirectional pulse current regulation is realized. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0156] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0157] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the steps of any one of the methods in the first aspect are implemented.

[0158] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any one of the methods in the first aspect are implemented.

[0159] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the steps of any one of the methods in the first aspect.

[0160] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0161] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0162] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0163] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A battery charging method based on bidirectional pulse current control, characterized in that: The method comprises: Obtaining the user's charging demand information, the battery status information of the target battery, and the charging strategy of each charging condition of the charging pile, and identifying the charging process of each charging condition and the charging demand corresponding to each charging condition based on the charging strategy of each charging condition; By using a bidirectional current strategy, the charging process of each charging condition is adjusted to obtain a bidirectional charging process of each charging condition, and a battery model of the target battery is constructed based on the battery status information of the target battery; Based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, the charging process of each charging condition is simulated through the battery model to obtain the battery health status information corresponding to each charging condition, and based on the battery health status information corresponding to each charging condition, the bidirectional current dynamic control strategy of each charging condition is identified; The target charging condition corresponding to the charging demand information of the user is identified, and based on the target bidirectional charging process corresponding to the bidirectional current dynamic control strategy of the target charging condition, the target battery is charged to complete the charging process of the target battery.

2. The method according to claim 1, characterized in that The charging strategy based on each of the charging conditions, identifying the charging process of each of the charging conditions, and the charging demand corresponding to each of the charging conditions, includes: For each charging condition, query the historical charging log information of the charging pile in the charging condition and the charging restriction condition of the charging pile in the charging condition in the historical database of the charging pile, and identify the charging process information of the charging pile for each battery model based on the historical charging log information; Based on the charging process information of the charging pile for each battery model, a sub-charging process of the charging pile for each battery model is generated, and the sub-charging process of the charging pile for all battery models is used as the charging process of the charging pile; Based on the charging restriction condition of the charging operating condition, restriction information of a restriction type of the charging operating condition is identified, and the restriction information of the restriction type is used as the charging demand corresponding to the charging operating condition.

3. The method according to claim 2, characterized in that The bidirectional current strategy is used to adjust the charging process of each charging condition to obtain the bidirectional charging process of each charging condition, including: For each charging condition, based on the sub-charging process for each battery model according to the charging condition, identifying each charging parameter information of each sub-charging process; Based on the bidirectional current strategy and each of the charging parameter information, generate bidirectional charging parameter information corresponding to each of the charging parameter information, and based on each of the bidirectional charging parameter information, generate a sub-bidirectional charging process corresponding to each sub-charging process; The sub-bidirectional charging processes of all battery models are used as the charging process of the charging condition.

4. The method according to claim 1, characterized in that: The step of constructing a battery model of the target battery based on the battery status information of the target battery includes: Based on the battery status information of the target battery, identifying the target battery model of the target battery and the battery aging degree of the target battery; In the model database, the initial battery model of the target battery model is retrieved, and based on the battery aging degree of the target battery, the physical properties of the target battery, and the battery life change mechanism, the model parameters in the initial battery model are adjusted to obtain the battery model of the target battery.

5. The method according to claim 4, characterized in that The charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition are simulated through the battery model to obtain the battery health status information corresponding to each charging condition, including: For each charging condition, based on the charging demand corresponding to the charging condition, identifying the charging adjustment restriction condition of the target bidirectional charging process corresponding to the target battery model, and generating each simulated bidirectional charging process of the battery model based on the charging adjustment restriction condition of the target bidirectional charging process; Based on each of the simulated bidirectional charging processes, the charging process of the charging condition is simulated through the battery model to obtain the sub-battery health status information corresponding to each simulated bidirectional charging process; The sub-battery health status information corresponding to all simulated bidirectional charging processes is used as the battery health status information corresponding to the charging condition.

6. The method according to claim 5, characterized in that The method of identifying the bidirectional current dynamic control strategy for each charging condition based on the battery health status information corresponding to each charging condition includes: For each simulated bidirectional charging process, identify the key factor value of each key factor type of the simulated bidirectional charging process, and based on the key factor value of each key factor type corresponding to each simulated bidirectional charging process and the sub-battery health status information of each simulated bidirectional charging process, identify the impact information between each key factor type and battery aging; Based on the influence information between each key factor type and battery aging, a bidirectional current dynamic control strategy for the charging condition is identified.

7. The method according to claim 1, characterized in that The method further comprises: Acquire the shelf battery state of the target battery in the battery shelf stage and the battery model of the target battery, and based on the shelf battery state, simulate the battery health state change process of the target battery under the conditions of each bidirectional current strategy in the battery shelf stage through each bidirectional current strategy of the battery model, and obtain the battery health state change distribution information of each bidirectional current factor of the target battery in the battery shelf stage; Based on the battery health status change distribution information of each of the bidirectional current factors, a target bidirectional current strategy for the target battery in the battery shelving stage is generated, and based on the target bidirectional current strategy, battery maintenance processing is performed on the target battery in the battery shelving state to complete the battery maintenance task of the target battery in the battery shelving stage.

8. A battery charging device based on bidirectional pulse current regulation, characterized in that: The device comprises: An acquisition module is used to acquire the user's charging demand information, the battery status information of the target battery, and the charging strategy of each charging condition of the charging pile, and based on the charging strategy of each charging condition, identify the charging process of each charging condition and the charging demand corresponding to each charging condition; A construction module, used to adjust the charging process of each charging condition through a bidirectional current strategy, obtain the bidirectional charging process of each charging condition, and construct a battery model of the target battery based on the battery status information of the target battery; an identification module, for simulating the charging process of each charging condition through the battery model based on the charging demand corresponding to each charging condition and the bidirectional charging process of each charging condition, obtaining the battery health status information corresponding to each charging condition, and identifying the bidirectional current dynamic control strategy of each charging condition based on the battery health status information corresponding to each charging condition; The charging module is used to identify the target charging condition corresponding to the user's charging demand information, and based on the target bidirectional charging process corresponding to the bidirectional current dynamic control strategy of the target charging condition, charge the target battery to complete the charging process of the target battery.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

11. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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