A battery charging control method, device and system

Abstract

The present invention discloses a battery charging control method, device and system. The method is based on a battery system formed by connecting multiple unit energy storage batteries in parallel, and includes: obtaining a charging curve of the unit energy storage battery, which is recorded as a first charging curve; obtaining a charging curve of the battery system, which is recorded as a second charging curve; charging each unit energy storage battery independently according to the first charging curve until the energy storage of each unit energy storage battery reaches 80%; after determining that the energy storage of all unit energy storage batteries reaches 80%, charging the battery system according to the second charging curve until it is fully charged. The method of the present invention divides the charging process into two parts, the first part adopts a separate charging strategy, and the second part adopts an overall charging strategy. In this way, the energy storage rate of the unit energy storage batteries in the entire battery system can reach the optimal state. It is mainly used in the field of battery management technology.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery management, and in particular relates to a battery charging control method, device and system. Background Art

[0002] Existing unit energy storage batteries are generally composed of multiple unit batteries, which are then grouped and connected in parallel to form a battery block. When controlling these battery blocks, for example, charging the battery block, it is generally adopted to directly charge the battery block by monitoring the current or voltage. However, this charging method cannot fully charge each unit battery to the greatest extent. As a result, the energy storage efficiency of the entire battery block is not high. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the above-mentioned prior art. To this end, the present invention provides a battery charging control method, device and system.

[0004] On the one hand, a battery charging control method is provided, which is based on a battery system formed by connecting multiple unit energy storage batteries in parallel, including: obtaining a charging curve of the unit energy storage battery, which is recorded as a first charging curve; obtaining a charging curve of the battery system, which is recorded as a second charging curve; charging each unit energy storage battery independently according to the first charging curve until the energy storage capacity of each unit energy storage battery reaches 80%; after determining that the energy storage capacity of all unit energy storage batteries reaches 80%, charging the battery system according to the second charging curve until it is fully charged.

[0005] Preferably, the acquiring of the charging curve of the unit energy storage battery specifically comprises: acquiring the model of the unit energy storage battery, and sending the model to a first remote server, and obtaining the charging curve corresponding to the model through feedback from the first remote server; wherein the first remote server records a table of relationships between models and unit energy storage battery charging curves that have been tested in advance, and the first remote server queries the table of relationships between models and unit energy storage battery charging curves according to the model to obtain the charging curve corresponding to the unit energy storage battery of the model, and feeds back the charging curve.

[0006] Preferably, obtaining the charging curve of the battery system specifically includes: obtaining the model of the battery system, and sending the model to a second remote server, and obtaining the charging curve corresponding to the model through feedback from the second remote server; wherein the second remote server records a relationship table between the model and the charging curve of the battery system that has been tested in advance, and the second remote server queries the relationship table between the model and the charging curve of the battery system according to the model to obtain the charging curve corresponding to the battery system of the model, and feeds back the charging curve.

[0007] The unit energy storage battery includes a solid sulfide electrolyte film. The preparation method of the solid sulfide electrolyte film is as follows: sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin are mixed and dispersed as component A; an auxiliary agent is used as component B, an organic solvent is used as component C, and then component A, component B and component C are mixed and dispersed, the obtained mixture is coated on a substrate, allowed to stand, and dried to obtain the solid sulfide electrolyte film; the lithium salt is selected from at least one of lithium bis(trifluoromethanesulfonyl imide), lithium bis(trifluoromethanesulfonyl imide), and lithium bis(oxalatoborate).

[0008] Preferably, the weight ratio of the sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin and hydroxy acrylic resin is 10: (0.1-1): (0.5-2): (1-5): (0.1-1): (5-15): (1-5), and more preferably 10: (0.1-0.6): (0.8-1.2): (1-2.5): (0.3-0.8): (5-10): (1-4).

[0009] Preferably, the weight ratio of component A, component B and component C is 1:(0.05-0.8):(1.5-5), and more preferably 1:(0.1-0.3):(2.5-5).

[0010] Preferably, the auxiliary agent is selected from at least one of toluene diisocyanate, hexamethylene diisocyanate, and at least one of hexamethylenediamine, diethylenetriamine, and triethylenetetramine.

[0011] Preferably, the auxiliary agent also includes sodium laurate polyether sulfate, which helps to improve the dispersion uniformity of each component.

[0012] Preferably, the auxiliary agent, by weight, includes 0.5-1.5 parts of toluene diisocyanate, 0.5-1.5 parts of hexamethylene diisocyanate, 0.5-4 parts of diethylenetriamine, 0.5-4 parts of triethylenetetramine, and 0.5-2 parts of sodium laurate polyether sulfate; further preferably, the auxiliary agent, by weight, includes 0.5-1 parts of toluene diisocyanate, 0.5-1 parts of hexamethylene diisocyanate, 1.5-2 parts of diethylenetriamine, 1.5-2 parts of triethylenetetramine, and 0.5-2 parts of sodium laurate polyether sulfate.

[0013] Preferably, the epoxy resin is selected from bisphenol A epoxy resin and / or bisphenol F epoxy resin.

[0014] Preferably, the sulfide is selected from Li3PS4, Li7P3S 11 At least one of .

[0015] Preferably, the organic solvent includes at least one of ethyl acetate, dimethyl carbonate and ethanol.

[0016] Preferably, the substrate comprises a polytetrafluoroethylene plate.

[0017] Preferably, the preparation method of the solid sulfide electrolyte film is: sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin are mixed and dispersed at a mixing and dispersing speed of 1000-2000 rpm and a mixing and dispersing time of 30-60 minutes as component A; an auxiliary agent is used as component B, and an organic solvent is used as component C, and then component A, component B and component C are mixed and dispersed at a mixing and dispersing speed of 500-800 rpm and a mixing and dispersing time of 20-40 minutes, the obtained mixture is coated on a substrate, left to stand for 2-4 hours, vacuum dried at 40-80°C for 3-6 hours, and the film is peeled off from the substrate to obtain the solid sulfide electrolyte film;

[0018] The weight ratio of the sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin is 10: (0.1-0.6): (0.8-1.2): (1-2.5): (0.3-0.8): (5-10): (1-4);

[0019] The auxiliary agent includes, by weight, 0.5-1.5 parts of toluene diisocyanate, 0.5-1.5 parts of hexamethylene diisocyanate, 0.5-4 parts of diethylenetriamine, 0.5-4 parts of triethylenetetramine, and 0.5-2 parts of sodium laurate polyether sulfate;

[0020] The weight ratio of the component A, the component B and the component C is 1:(0.05-0.6):(2-5).

[0021] Preferably, the film peeled off from the substrate has a thickness of 150-200 μm.

[0022] Preferably, after the film is peeled off from the substrate, the film is subjected to a rolling thinning process using a roller machine, which is a conventional process in the art.

[0023] Preferably, the thickness of the solid sulfide electrolyte film is 100-130 μm, more preferably 100-120 μm.

[0024] On the other hand, a battery charging control device is provided, comprising: a processor and a memory; the memory is used to store a computer-readable program; when the computer-readable program is executed by the processor, the processor implements the battery charging control method as described in any one of the above technical solutions.

[0025] On the other hand, a battery charging control system is provided, comprising: a first acquisition module, a second acquisition module, an independent charging module and an overall charging module;

[0026] The first acquisition module is used to: acquire a charging curve of the unit energy storage battery, where the charging curve is recorded as a first charging curve;

[0027] The second acquisition module is used to: acquire a charging curve of the battery system, where the charging curve is recorded as a second charging curve;

[0028] The independent charging module is used to independently charge each unit energy storage battery according to the first charging curve until the energy storage capacity of each unit energy storage battery reaches 80%;

[0029] The overall charging module is used to: after determining that the energy storage capacity of all unit energy storage batteries has reached 80%, charge the battery system according to the second charging curve until it is fully charged.

[0030] Compared with the prior art, the present invention has the following beneficial effects: the method of the present invention divides the charging process into two parts, the first part adopts a separate charging strategy, and the second part adopts an overall charging strategy. In this way, the energy storage rate of the unit energy storage battery in the entire battery system can be optimized. At the same time, the present invention also provides a corresponding device and system, the beneficial effects of which are similar to those of the method, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0032] Figure 1 is a flow chart of steps of a battery charging control method;

[0033] Figure 2 It is a schematic diagram of the device structure of a battery charging control device;

[0034] Figure 3 It is a system structure diagram of a battery charging control system. DETAILED DESCRIPTION

[0035] In order to make the technical scheme of the present invention more clearly understood by those skilled in the art, the following embodiments are listed for illustration. It should be pointed out that the following embodiments do not limit the protection scope of the present invention.

[0036] Unless otherwise specified, the raw materials, reagents or devices used in the following examples can be obtained from conventional commercial sources or by existing known methods.

[0037] refer to Figure 1 , Figure 1 It is a flowchart of the steps of the battery charging control method.

[0038] The battery charging control method is mainly aimed at a battery system composed of multiple unit energy storage batteries connected in parallel. The charging control method can be executed by a smart device. When the smart device executes it, the steps implemented include:

[0039] Step 1: Obtain a charging curve of a unit energy storage battery, where the charging curve is recorded as a first charging curve.

[0040] When the battery system needs to be charged, the smart device needs to obtain the charging curve and charge according to the charging curve. The charging curve refers to the optimal charging solution for a specific energy storage system obtained through testing in advance. In this specific embodiment, the first charging curve is the optimal charging solution for the unit energy storage battery. The smart device can obtain the charging curve from a local device or a remote server. In some further specific embodiments, the smart device obtains the model of the unit energy storage battery and transmits the model to the first remote server.

[0041] The first remote server records a table of relationships between models and unit energy storage battery charging curves that have been tested in advance, and the first remote server queries the table of relationships between models and unit energy storage battery charging curves according to the model to obtain a charging curve corresponding to the unit energy storage battery of the model, and feeds back the charging curve to the smart device, so that the smart device obtains a first charging curve.

[0042] Step 2: Obtain a charging curve of the battery system, which is recorded as a second charging curve.

[0043] In addition to obtaining the first charging curve, the smart device also needs to obtain a second charging curve. The second charging curve is the optimal charging solution for the entire battery system. The smart device can obtain the charging curve from a local device or a remote server. In some further specific embodiments, the smart device obtains the model of the battery system and transmits the model to a second remote server.

[0044] The second remote server records a table of relationships between models and battery system charging curves that have been tested in advance. The second remote server queries the table of relationships between models and battery system charging curves according to the model to obtain a charging curve corresponding to the battery system of the model, and feeds back the charging curve to the smart device, so that the smart device obtains a second charging curve.

[0045] Step 3: Charge each unit energy storage battery independently according to the first charging curve until the energy storage capacity of each unit energy storage battery reaches 80%.

[0046] After the smart device determines that it has received the first charging curve, it can charge each unit energy storage battery independently. Among them, each unit energy storage battery has an independent charging circuit. The independent charging circuit allows the unit energy storage battery to be charged independently. In order to enable each unit energy storage battery to achieve the maximum energy storage effect, the smart device will use the first charging curve to charge each unit energy storage battery independently. Through testing, it can be known that when the energy storage capacity of the unit energy storage battery reaches 80%, its charging speed will decrease. In order to maintain a certain charging speed, the independent charging of the unit energy storage battery only needs to reach 80% of the unit energy storage battery. When one unit energy storage battery is charged, the next unit energy storage battery can be charged until the energy storage capacity of all unit energy storage batteries reaches 80%.

[0047] Step 4: After determining that the energy storage capacity of all unit energy storage batteries has reached 80%, the battery system is charged according to the second charging curve until it is fully charged.

[0048] After the smart device confirms that the second charging curve has been received and confirms that the energy storage capacity of each unit energy storage battery has reached 80%, the entire battery system can be charged. The battery system has a parallel circuit, which allows all unit energy storage batteries to be connected in parallel for overall charging. In order to complete the charging of the battery system, the smart device will charge the battery system as a whole through the second charging curve so that the battery system is fully charged and the entire charging process is completed.

[0049] The present invention divides the charging process into two parts, the first part adopts a separate charging strategy, and the second part adopts an overall charging strategy. In this way, the energy storage rate of the unit energy storage battery in the entire battery system can be optimized.

[0050] Among them, each unit energy storage battery has an independent charging circuit. The independent charging circuit allows the unit energy storage battery to be charged independently. In order to enable each unit energy storage battery to achieve the maximum energy storage effect, the smart device will use the first charging curve to independently charge each unit energy storage battery. Through testing, it can be known that when the energy storage capacity of the unit energy storage battery reaches 80%, its charging speed will decrease. In order to maintain a certain charging speed, the independent charging of the unit energy storage battery only needs to reach 80% of the unit energy storage battery. When one unit energy storage battery is charged, the next unit energy storage battery can be charged until the energy storage capacity of all unit energy storage batteries reaches 80%.

[0051] In some advanced specific embodiments, the unit energy storage battery includes a solid sulfide electrolyte film, and the preparation method of the solid sulfide electrolyte film is: sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin are mixed and dispersed as component A; the auxiliary agent is used as component B, and the organic solvent is used as component C, and then component A, component B and component C are mixed and dispersed, and the obtained mixture is coated on a substrate, allowed to stand, and dried to obtain the solid sulfide electrolyte film; the lithium salt is selected from at least one of lithium bis(trifluoromethanesulfonyl imide), lithium bis(trifluoromethanesulfonyl imide), and lithium dioxalatoborate.

[0052] The weight ratio of the sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin and hydroxy acrylic resin is 10: (0.1-1): (0.5-2): (1-5): (0.1-1): (5-15): (1-5).

[0053] The weight ratio of the A component, the B component and the C component is 1: (0.05-0.8): (1.5-5); and / or the auxiliary agent is selected from at least one of toluene diisocyanate, hexamethylene diisocyanate, and at least one of hexamethylenediamine, diethylenetriamine and triethylenetetramine. The auxiliary agent also includes sodium laurate polyether sulfate.

[0054] In some embodiments, Example 1, the preparation method of the solid sulfide electrolyte film is: sulfide (Li3PS4), carbon nanotubes, lithium p-styrene sulfonate, lithium salt (lithium bistrifluoromethanesulfonyl imide), lithium titanate, epoxy resin (bisphenol A type epoxy resin), and hydroxy acrylic resin are mixed and dispersed at a mixing and dispersing speed of 1000 rpm and a mixing and dispersing time of 40 minutes as component A; the auxiliary agent is used as component B, and the organic solvent is used as component C, and then component A, component B and component C are mixed and dispersed at a mixing and dispersing speed of 600 rpm and a mixing and dispersing time of 30 minutes, and the obtained mixture is coated on a substrate (polytetrafluoroethylene plate), allowed to stand for 2 hours, vacuum dried at 70°C for 5 hours, the film is peeled off from the substrate, and a roller mill is used for roller thinning to obtain a 120 μm thick solid sulfide electrolyte film;

[0055] The weight ratio of sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin is 10:0.2:0.9:1.2:0.4:8:3;

[0056] The auxiliary agent, by weight, is composed of 0.5 parts of toluene diisocyanate, 0.5 parts of hexamethylene diisocyanate, 0.8 parts of diethylenetriamine, 0.6 parts of triethylenetetramine, and 0.8 parts of sodium laurate polyether sulfate;

[0057] The weight ratio of component A, component B and component C is 1:0.1:2.

[0058] In some embodiments, in Example 2, the method for preparing the solid sulfide electrolyte film is: 11 ), carbon nanotubes, lithium p-styrene sulfonate, lithium salt (lithium bistrifluoromethanesulfonyl imide), lithium titanate, epoxy resin (bisphenol F type epoxy resin), and hydroxy acrylic resin are mixed and dispersed at a mixing and dispersing speed of 1000 rpm and a mixing and dispersing time of 40 minutes as component A; the auxiliary agent is used as component B, and the organic solvent is used as component C, and then component A, component B and component C are mixed and dispersed at a mixing and dispersing speed of 800 rpm and a mixing and dispersing time of 30 minutes, and the obtained mixture is coated on a substrate (polytetrafluoroethylene plate), allowed to stand for 2 hours, vacuum dried at 70°C for 5 hours, the film is peeled off from the substrate, and a roller mill is used to perform roller thinning treatment to obtain a 110 μm thick solid sulfide electrolyte film;

[0059] The weight ratio of sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin is 10:0.2:0.9:1.2:0.4:8:3;

[0060] The auxiliary agent, by weight, is composed of 0.5 parts of toluene diisocyanate, 0.5 parts of hexamethylene diisocyanate, 0.8 parts of diethylenetriamine, 0.6 parts of triethylenetetramine, and 0.8 parts of sodium laurate polyether sulfate;

[0061] The weight ratio of component A, component B and component C is 1:0.15:2.

[0062] In some embodiments, in Example 3, the method for preparing the solid sulfide electrolyte film is: 11 ), carbon nanotubes, lithium p-styrene sulfonate, lithium salt (lithium bistrifluoromethanesulfonyl imide), lithium titanate, epoxy resin (bisphenol A type epoxy resin), and hydroxy acrylic resin are mixed and dispersed at a mixing and dispersing speed of 1000 rpm and a mixing and dispersing time of 40 minutes as component A; an auxiliary agent is used as component B, and an organic solvent is used as component C, and then component A, component B and component C are mixed and dispersed at a mixing and dispersing speed of 800 rpm and a mixing and dispersing time of 30 minutes, and the obtained mixture is coated on a substrate (polytetrafluoroethylene plate), allowed to stand for 2 hours, vacuum dried at 70°C for 5 hours, the film is peeled off from the substrate, and a roll mill is used to perform a roller-thinning process to obtain a 115 μm thick solid sulfide electrolyte film;

[0063] The weight ratio of sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin is 10:0.4:0.8:1.8:0.3:6:2;

[0064] The auxiliary agent, by weight, is composed of 0.6 parts of toluene diisocyanate, 0.6 parts of hexamethylene diisocyanate, 0.8 parts of diethylenetriamine, 0.7 parts of triethylenetetramine, and 0.8 parts of sodium laurate polyether sulfate;

[0065] The weight ratio of component A, component B and component C is 1:0.2:2.

[0066] Comparative Example 1;

[0067] Compared with Example 1, the difference of Comparative Example 1 is that an equal amount of lithium bistrifluoromethanesulfonyl imide is used to replace lithium p-styrene sulfonate, and the rest of the process is the same as Example 1.

[0068] Comparative Example 2;

[0069] Compared with Example 1, the difference of Comparative Example 2 is that the epoxy resin, the hydroxylated acrylic resin and the auxiliary agent are replaced by an equal amount of polyvinylidene fluoride, and the rest of the process is the same as that of Example 1.

[0070] Comparative Example 3;

[0071] Compared with Example 1, the difference of Comparative Example 3 is that an equal amount of graphene oxide is used to replace carbon nanotubes, and the rest of the process is the same as that of Example 1.

[0072] Product effect testing

[0073] The solid sulfide electrolyte films prepared in Examples 1-2 and Comparative Examples 1-3 were tested for ionic conductivity at 25° C. using a conventional AC impedance method in the art. The results are shown in Table 1.

[0074] Table 1

[0075]

[0076] It can be seen from Table 1 that the ionic conductivity of the solid sulfide electrolyte film prepared in Examples 1-2 of the present invention is significantly higher than that of Comparative Examples 1-3. Moreover, it can be seen from the results of Example 1 and Comparative Examples 1-3 that the ionic conductivity of the solid sulfide electrolyte film prepared in Example 1 of the present invention is significantly higher than that of Comparative Examples 1-3 because lithium bistrifluoromethanesulfonyl imide is used to replace lithium p-styrenesulfonate, carbon nanotubes, epoxy resin, hydroxy acrylic resin and auxiliary agents.

[0077] In the preparation process of the solid sulfide electrolyte film of the present invention, sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, hydroxy acrylic resin, auxiliary agent, and organic solvent are used to mix sulfide with carbon nanotubes, lithium p-styrene sulfonate, lithium salt, and lithium titanate, disperse them in epoxy resin and hydroxy acrylic resin, and then solidify them with auxiliary agent to make sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, and lithium titanate uniformly dispersed in the mesh film formed after solidification. The use of sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, and lithium titanate forms a good lithium-conducting channel in the mesh film, thereby significantly improving the ionic conductivity of the solid sulfide electrolyte film. The preparation method of the present invention can make the carbon nanotubes have good dispersion performance, which is conducive to the formation of lithium-conducting channels. Li3PS4, Li7P3S 11 The ionic conductivity before being treated by the method of the present invention is about 1.9×10 -4 S / cm, 3.4×10 -3 S / cm. After being treated by the method of the present invention, the ionic conductivity of the corresponding solid sulfide electrolyte film can even reach 1.0×10 -2 S / cm.

[0078] On the other hand, reference Figure 2 , Figure 2 It is a schematic diagram of the structure of a battery charging control device.

[0079] A battery charging control device is provided, comprising: a processor and a memory; wherein the memory is used to store a computer-readable program. When the computer-readable program is executed by the processor, the processor implements the battery charging control method as described in any one of the above technical solutions.

[0080] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. As is well known to those skilled in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0081] refer to Figure 3 , Figure 3 It is a system structure diagram of a battery charging control system.

[0082] In another aspect, a battery charging control system is provided, which includes a first acquisition module, a second acquisition module, an independent charging module and an overall charging module.

[0083] The first acquisition module is used to: acquire a charging curve of the unit energy storage battery, and the charging curve is recorded as a first charging curve.

[0084] The second acquisition module is used to acquire a charging curve of the battery system, where the charging curve is recorded as a second charging curve.

[0085] The independent charging module is used to independently charge each unit energy storage battery according to a first charging curve until the energy storage capacity of each unit energy storage battery reaches 80%.

[0086] The overall charging module is used to: after determining that the energy storage capacity of all unit energy storage batteries has reached 80%, charge the battery system according to the second charging curve until it is fully charged.

[0087] In a fourth aspect, a computer-readable storage medium is provided, in which a program executable by a processor is stored. When the program executable by the processor is executed by the processor, it is used to implement the battery charging control method as described in any one of the above specific embodiments.

[0088] An embodiment of the present application also discloses a computer program product, including a computer program or computer instructions, wherein the computer program or computer instructions are stored in a computer-readable storage medium, a processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device executes the battery charging control method described in any of the previous embodiments.

[0089] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0090] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0091] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0092] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0093] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0094] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0095] Although the description of the present application has been quite detailed and specifically describes several described embodiments, it is not intended to be limited to any of these details or embodiments or any particular embodiment, but should be regarded as providing a broad possible interpretation of these claims by reference to the attached claims, taking into account the prior art, so as to effectively cover the intended scope of the present application. In addition, the above description of the present application is based on the embodiments foreseeable by the inventor, and its purpose is to provide a useful description, and those non-substantial changes to the present application that have not yet been foreseen may still represent equivalent changes to the present application.

Claims

1. A battery charging control method, based on a battery system formed by connecting multiple unit energy storage batteries in parallel, characterized in that: include: Acquire a charging curve of the unit energy storage battery, where the charging curve is recorded as a first charging curve; Obtaining a charging curve of the battery system, the charging curve being recorded as a second charging curve; charging each unit energy storage battery independently according to the first charging curve until the energy storage capacity of each unit energy storage battery reaches 80%; after determining that the energy storage capacity of all unit energy storage batteries reaches 80%, charging the battery system according to the second charging curve until it is fully charged; The unit energy storage battery includes a solid sulfide electrolyte film, and the preparation method of the solid sulfide electrolyte film is as follows: sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin are mixed and dispersed as component A; an auxiliary agent is used as component B, and an organic solvent is used as component C, and then component A, component B and component C are mixed and dispersed, and the obtained mixture is coated on a substrate, allowed to stand, and dried to obtain the solid sulfide electrolyte film; the lithium salt is selected from at least one of lithium bistrifluoromethanesulfonyl imide, lithium bistrifluoromethanesulfonyl imide, and lithium bis(trifluoromethanesulfonyl)imide; The weight ratio of the sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin is 10: (0.1-1): (0.5-2): (1-5): (0.1-1): (5-15): (1-5); The obtaining of the charging curve of the unit energy storage battery specifically includes: obtaining the model of the unit energy storage battery, and sending the model to a first remote server, and obtaining the charging curve corresponding to the model through feedback from the first remote server; wherein the first remote server records a table of relationships between the model and the charging curve of the unit energy storage battery that has been tested in advance, and the first remote server queries the table of relationships between the model and the charging curve of the unit energy storage battery according to the model, so as to obtain the charging curve corresponding to the unit energy storage battery of the model, and feeds back the charging curve; The method of obtaining the charging curve of the battery system specifically includes: obtaining the model of the battery system, and sending the model to a second remote server, and obtaining the charging curve corresponding to the model through feedback from the second remote server; wherein the second remote server records a relationship table between the model and the charging curve of the battery system that has been tested in advance, and the second remote server queries the relationship table between the model and the charging curve of the battery system according to the model to obtain the charging curve corresponding to the battery system of the model, and feeds back the charging curve.

2. A battery charging control method according to claim 1, characterized in that: The weight ratio of the component A, the component B and the component C is 1: (0.05-0.8): (1.5-5); and / or the auxiliary agent is selected from at least one of toluene diisocyanate, hexamethylene diisocyanate, and at least one of hexamethylenediamine, diethylenetriamine and triethylenetetramine.

3. A battery charging control method according to claim 1, characterized in that: The auxiliary agent also includes sodium laurate polyether sulfate.

4. A battery charging control method according to claim 3, characterized in that: The preparation method of the solid sulfide electrolyte film is as follows: sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin are mixed and dispersed at a mixing and dispersing speed of 1000-2000 rpm and a mixing and dispersing time of 30-60 minutes as component A; an auxiliary agent is used as component B, and an organic solvent is used as component C, and then component A, component B, and component C are mixed and dispersed at a mixing and dispersing speed of 500-800 rpm and a mixing and dispersing time of 20-40 minutes, the obtained mixture is coated on a substrate, left to stand for 2-4 hours, vacuum dried at 40-80° C. for 3-6 hours, and the film is peeled off from the substrate to obtain the solid sulfide electrolyte film; The weight ratio of the sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin and hydroxy acrylic resin is 10: (0.1-0.6): (0.8-1.2): (1-2.5): (0.3-0.8): (5-10): (1-4); The auxiliary agent includes, by weight, 0.5-1.5 parts of toluene diisocyanate, 0.5-1.5 parts of hexamethylene diisocyanate, 0.5-4 parts of diethylenetriamine, 0.5-4 parts of triethylenetetramine, and 0.5-2 parts of sodium laurate polyether sulfate; The weight ratio of the component A, the component B and the component C is 1:(0.05-0.6):(2-5).

5. A battery charging control device, characterized in that: include: processor; A memory for storing a computer readable program; When the computer-readable program is executed by the processor, the processor implements the battery charging control method according to any one of claims 1 to 4.

6. A battery charging control system, characterized in that: include: A first acquisition module, a second acquisition module, an independent charging module and an overall charging module; The first acquisition module is used to: acquire a charging curve of the unit energy storage battery, where the charging curve is recorded as a first charging curve; The second acquisition module is used to: acquire a charging curve of the battery system, where the charging curve is recorded as a second charging curve; The independent charging module is used to independently charge each unit energy storage battery according to the first charging curve until the energy storage capacity of each unit energy storage battery reaches 80%; The overall charging module is used to: after determining that the energy storage capacity of all unit energy storage batteries has reached 80%, charge the battery system according to the second charging curve until it is fully charged; The unit energy storage battery comprises a solid sulfide electrolyte film, and the preparation method of the solid sulfide electrolyte film is as follows: sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin are mixed and dispersed as component A; an auxiliary agent is used as component B, and an organic solvent is used as component C, and then component A, component B, and component C are mixed and dispersed, and the obtained mixture is coated on a substrate, allowed to stand, and dried to obtain the solid sulfide electrolyte film; the lithium salt is selected from at least one of lithium bis(trifluoromethanesulfonyl imide), lithium bis(trifluoromethanesulfonyl imide, and lithium dioxalate borate; The weight ratio of the sulfide, carbon nanotubes, lithium p-styrene sulfonate, lithium salt, lithium titanate, epoxy resin, and hydroxy acrylic resin is 10: (0.1-1): (0.5-2): (1-5): (0.1-1): (5-15): (1-5); The obtaining of the charging curve of the unit energy storage battery specifically includes: obtaining the model of the unit energy storage battery, and sending the model to a first remote server, and obtaining the charging curve corresponding to the model through feedback from the first remote server; wherein the first remote server records a table of relationships between the model and the charging curve of the unit energy storage battery that has been tested in advance, and the first remote server queries the table of relationships between the model and the charging curve of the unit energy storage battery according to the model, so as to obtain the charging curve corresponding to the unit energy storage battery of the model, and feeds back the charging curve; The method of obtaining the charging curve of the battery system specifically includes: obtaining the model of the battery system, and sending the model to a second remote server, and obtaining the charging curve corresponding to the model through feedback from the second remote server; wherein the second remote server records a relationship table between the model and the charging curve of the battery system that has been tested in advance, and the second remote server queries the relationship table between the model and the charging curve of the battery system according to the model to obtain the charging curve corresponding to the battery system of the model, and feeds back the charging curve.

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