Charging method and device, computer equipment and storage medium

Abstract

The invention relates to a charging method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining a charging mode of a battery at a charging tail end under the condition that the battery reaches the charging tail end; wherein the charging current of the battery changes dynamically in the charging mode; and then, based on the charging mode and the state information of the battery, determining an electrical parameter value required by charging of the battery at the charging tail end, and finally, sending the electrical parameter value to a charging pile of the battery until a charging cut-off condition of the battery is met. The method can reduce the charging duration of the battery at the charging end.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a charging method, device, computer equipment and storage medium. Background Art

[0002] With the development of new energy, more and more electrical devices are powered by batteries.

[0003] In the related technology, taking electric vehicles as an example, in order to improve the safety of electric vehicle charging and reduce the risks of lithium deposition and overcharging of electric vehicle batteries during charging, the batteries are usually charged with a small current at the end of the battery charging.

[0004] However, the charging method at the battery charging terminal in the related art has the problem of too long charging time. Summary of the invention

[0005] Based on this, it is necessary to provide a charging method, device, computer equipment and storage medium to address the above technical problems, which can reduce the charging time at the battery charging terminal.

[0006] In a first aspect, an embodiment of the present application provides a charging method, including:

[0007] When the battery reaches the charging end, obtain the charging mode of the battery at the charging end; the charging current of the battery changes dynamically under the charging mode;

[0008] Based on the charging method and the battery status information, determine the electrical parameter values ​​required for charging the battery at the charging terminal;

[0009] The electrical parameter value is sent to the battery charging station until the battery charging cut-off condition is reached.

[0010] In an embodiment of the present application, when the battery reaches the charging terminal, the charging mode of the battery at the charging terminal is obtained; wherein the charging current of the battery changes dynamically under the charging mode; then, based on the charging mode and the status information of the battery, the electrical parameter values ​​required for charging the battery at the charging terminal are determined, and finally the electrical parameter values ​​are sent to the charging pile of the battery until the charging cut-off condition of the battery is reached. In this embodiment, when the charging process of the battery enters the charging terminal, the charging mode of the battery at the charging terminal is determined, and the charging current of the battery changes dynamically under this charging mode, which is equivalent to the dynamic change of the charging current during the charging process at the battery charging terminal; and, since the battery status information can reflect the current state of the battery, the battery charging mode is combined with the battery status information to determine the electrical parameter values ​​required for charging the battery at the charging terminal, so that when the charging pile charges the battery at the battery charging terminal, it will not damage the battery and dynamically adjust the charging current of the battery, giving full play to the charging capacity of the battery at the charging terminal, thereby reducing the charging time of the battery at the charging terminal; and, charging terminal protection conditions and charging cut-off conditions are set for the battery, so that the battery can be charged in time through the charging mode that protects the charging terminal, and when the battery is full, the charging is stopped in time, so that the battery will not have problems of overcharging and lithium precipitation, thereby improving the safety and reliability of the battery charging at the charging terminal.

[0011] In one embodiment, the method further comprises:

[0012] In the case where the battery voltage of the battery reaches a first voltage threshold, determining that the battery has reached the end of charging; and / or,

[0013] In the event that the battery capacity of the battery reaches a first capacity threshold, it is determined that the battery reaches the end of charging.

[0014] In the embodiment of the present application, when the battery voltage of the battery reaches the first voltage threshold, it is determined that the battery has reached the charging terminal; and / or, when the battery capacity of the battery reaches the first capacity threshold, it is determined that the battery has reached the charging terminal. In this embodiment, since the battery voltage gradually increases during the charging process, whether the battery voltage reaches the first voltage threshold is used as a criterion for judging whether the battery has reached the charging terminal protection condition, so that it is possible to accurately determine whether the battery charging has entered the charging terminal, thereby improving the accuracy and safety of the battery charging at the charging terminal; in addition, using the battery capacity as an indicator can more intuitively and accurately judge whether the battery has reached the charging terminal protection condition, thereby improving the accuracy and reliability of the battery charging at the charging terminal.

[0015] In one embodiment, obtaining a charging mode of a battery at a charging terminal includes:

[0016] Get the response information of the charging pile;

[0017] Determine the response speed of the charging pile according to the response information of the charging pile;

[0018] Determine the charging method of the battery at the charging terminal based on the response speed of the charging pile.

[0019] In the embodiment of the present application, the response information of the charging pile is obtained, and the response speed of the charging pile is determined according to the response information of the charging pile, and then the charging mode of the battery at the charging terminal is determined according to the response speed of the charging pile. In this embodiment, since the response speed reflects the speed at which the charging pile charges the battery through the received electrical parameter value, the charging mode of the battery at the charging terminal is determined by the response speed of the charging pile, and a suitable charging mode can be selected for the battery at the charging terminal to maximize the charging speed of the battery at the charging terminal and reduce the charging time.

[0020] In one embodiment, determining the response speed of the charging pile according to the response information of the charging pile includes:

[0021] According to the response information of the charging pile, a first moment of sending the historical electrical parameter value to the charging pile and a second moment of charging the battery with the target electrical parameter through the charging pile are obtained; the absolute value of the difference between the historical electrical parameter and the target electrical parameter is less than a preset difference threshold;

[0022] Determine the duration for the charging pile to charge the battery according to the first moment and the second moment;

[0023] Determine the response speed of the charging pile based on the duration.

[0024] In the embodiment of the present application, first, according to the response information of the charging pile, the first moment of sending the historical electrical parameter value to the charging pile and the second moment of charging the battery with the target electrical parameter by the charging pile are obtained; wherein the absolute value of the difference between the historical electrical parameter and the target electrical parameter is less than the preset difference threshold; then, according to the first moment and the second moment, the duration of charging the battery by the charging pile is determined, and finally, according to the duration, the response speed of the charging pile is determined. In this embodiment, the charging pile needs to process the electrical parameter value sent by the battery management system. Therefore, by evaluating the duration of the charging pile responding to the electrical parameter value requested by the battery management system, the response speed of the charging pile is determined, which improves the accuracy of the response speed of the charging pile, making the subsequent determination of the charging method of the battery at the charging terminal more reliable.

[0025] In one embodiment, determining the charging mode of the battery at the charging terminal according to the response speed of the charging pile includes:

[0026] When the response speed of the charging pile is greater than a preset speed threshold, it is determined that the charging mode of the battery at the charging terminal is constant power charging.

[0027] In the embodiment of the present application, since constant power charging is an efficient charging method, the battery is charged at constant power when the response speed of the charging pile is faster, so that the charging pile can maintain charging stability more quickly, thereby improving the charging efficiency of the battery charging terminal.

[0028] In one embodiment, obtaining a charging mode of a battery at a charging terminal includes:

[0029] Obtain characteristic information of the battery;

[0030] The charging method of the battery at the charging terminal is determined based on the characteristic information of the battery.

[0031] In the embodiment of the present application, characteristic information of the battery is obtained, and the charging method of the battery at the charging terminal is determined according to the characteristic information of the battery. In this embodiment, since the characteristic information represents the state and charging characteristics of the battery, the charging method of the battery at the charging terminal is determined according to the characteristic information of the battery, and the charging capacity of the battery at the charging terminal can be fully utilized through the determined charging method, the charging rate of the battery at the charging terminal can be increased, and the charging time of the battery at the charging terminal can be reduced.

[0032] In one embodiment, the characteristic information includes a current temperature of the battery; and determining a charging method of the battery at the charging terminal according to the characteristic information of the battery includes:

[0033] When the current temperature of the battery is greater than a preset temperature threshold, it is determined that the charging mode of the battery at the charging terminal is constant voltage charging.

[0034] In this embodiment, the temperature of the battery is greater than the preset temperature threshold, indicating that the temperature of the battery at the charging terminal is too high. In this case, the temperature of the battery should be gradually lowered during charging at the charging terminal. However, in the process of the battery decreasing from high temperature to normal temperature, the battery response characteristics change greatly, which is not conducive to control. The constant voltage charging method can minimize the impact of the response battery characteristic changes on the battery, thereby reducing the charging time at the battery charging terminal while improving the reliability of the battery charging at the charging terminal.

[0035] In one embodiment, the characteristic information includes a battery type; and determining a charging method of the battery at a charging terminal according to the characteristic information of the battery includes:

[0036] Obtaining a charging method corresponding to the battery type from a preset charging method calibration table; the charging method calibration table includes a correspondence between a plurality of different battery types and charging methods;

[0037] The charging method corresponding to the battery type is determined as the charging method of the battery at the charging terminal.

[0038] In the embodiment of the present application, the charging mode corresponding to the battery type is obtained from a preset charging mode calibration table, and the charging mode corresponding to the battery type is determined as the charging mode of the battery at the charging terminal; wherein the charging mode calibration table includes a plurality of correspondences between different battery types and charging modes. In this embodiment, by pre-calibrating the correspondences between a plurality of battery types and charging modes, the charging mode calibration table is directly used to determine the best charging mode of the battery at the charging terminal, which simplifies the process of determining the charging mode of the battery at the charging terminal and improves the response speed of charging the battery by the charging mode at the charging terminal.

[0039] In one embodiment, based on the charging mode and the battery status information, determining the electrical parameter value required for charging the battery at the charging terminal includes:

[0040] Get the interaction parameter type between the charging pile and the battery;

[0041] According to the charging mode, determining a battery charging parameter value indicated by the charging mode;

[0042] According to the interaction parameter type and the battery status information, the battery charging parameter value is converted into the electrical parameter value required for charging the battery at the charging terminal.

[0043] In the embodiment of the present application, the interaction parameter type between the charging pile and the battery is first obtained, and the battery charging parameter value indicated by the charging method is determined according to the charging method, and the battery charging parameter value is converted into the real-time electrical parameter value required for the battery to be charged at the charging terminal according to the interaction parameter type and the battery status information. In this embodiment, the charging method can indicate the way in which the battery is charged, the battery status information can indicate the real-time status of the battery, and the interaction parameter type can indicate the interaction method between the charging pile and the battery. Therefore, according to the charging method, the battery charging parameter value indicated by the charging method can be determined, making the battery charging parameter value more reliable; and according to the interaction parameter type between the charging pile and the battery and the battery status information, the battery charging parameter value is converted into the electrical parameter value required by the battery, which can accurately control the charging process of the battery at the charging terminal, dynamically adjust the charging current of the battery at the charging terminal, maximize the charging capacity of the battery at every moment at the charging terminal, and improve the charging speed of the battery at the charging terminal, thereby reducing the charging time of the battery at the charging terminal.

[0044] In one embodiment, obtaining the interaction parameter type between the charging pile and the battery includes:

[0045] Obtain multiple charging parameter types currently available for the charging pile and the usage rate of each charging parameter type;

[0046] The charging parameter type whose usage rate meets the preset condition is determined as the interaction parameter type between the charging pile and the battery.

[0047] In the embodiment of the present application, multiple charging parameter types currently available for the charging pile and the usage rate of each charging parameter type are obtained, and the charging parameter type whose usage rate meets the preset conditions is determined as the interaction parameter type between the charging pile and the battery. In this embodiment, the preset conditions can be set in advance by the user. Therefore, by selecting the charging parameter type whose usage rate meets the preset conditions as the interaction parameter type between the charging pile and the battery, the user's charging experience and charging efficiency can be improved.

[0048] In one of the embodiments, when the charging mode is constant power charging, the battery charging parameter value indicated by the charging mode is a constant charging power;

[0049] According to the charging mode, determining the battery charging parameter value indicated by the charging mode, including:

[0050] Obtaining a power value corresponding to a battery type of the battery from a preset type-power relationship; the type-power relationship includes a correspondence between multiple different battery types and power values;

[0051] The power value corresponding to the battery type is determined as the constant charging power.

[0052] In the embodiment of the present application, the power value corresponding to the battery type of the battery is obtained from the preset type-power relationship, and the power value corresponding to the battery type is determined as the constant charging power; wherein the type-power relationship table includes a correspondence between a plurality of different battery types and power values. In this embodiment, the constant charging power of the battery under the constant power charging mode is determined by a pre-calibrated method, which simplifies the process of calculating the constant charging power and improves the charging efficiency; and the constant charging power can be the full charge cut-off power, and the battery charging terminal is charged by the full charge cut-off power, and the charging current is dynamically adjusted, which can increase the charging rate of the battery charging terminal without damaging the battery, thereby reducing the charging time of the charging terminal.

[0053] In one of the embodiments, when the charging mode is constant voltage charging, the battery charging parameter value indicated by the charging mode is a constant charging voltage;

[0054] According to the charging mode, determining the battery charging parameter value indicated by the charging mode, including:

[0055] Obtaining a voltage value corresponding to a battery type of the battery from a preset type-voltage relationship; the type-voltage relationship table includes a correspondence between a plurality of different battery types and voltage values;

[0056] The voltage value corresponding to the battery type is determined as the constant charging voltage.

[0057] In the embodiment of the present application, the voltage value corresponding to the battery type of the battery is obtained from the preset type-voltage relationship, and the voltage value corresponding to the battery type is determined as the constant charging voltage; wherein the type-voltage relationship table includes a plurality of corresponding relationships between different battery types and voltage values. In this embodiment, the constant charging voltage of the battery under constant voltage charging is determined by a pre-calibrated method, which simplifies the process of calculating the constant charging voltage and improves the charging efficiency; and the constant charging voltage can be the full charge cut-off voltage, and the battery charging terminal is charged by the full charge cut-off voltage, and the charging current is dynamically adjusted, which can increase the charging rate of the battery charging terminal without damaging the battery, thereby reducing the charging time of the charging terminal.

[0058] In one embodiment, according to the interaction parameter type and the battery status information, converting the battery charging parameter value into the electrical parameter value required for charging the battery at the charging terminal includes:

[0059] When the interactive parameter type is current, the battery charging parameter value is converted into a charging current value required for charging the battery at the charging terminal according to the battery status information;

[0060] When the interactive parameter type is voltage, the charging parameter value of the battery is converted into the charging voltage value required for charging the battery at the charging terminal according to the battery status information;

[0061] When the interactive parameter type is power, the charging parameter value of the battery is converted into a real-time charging power value required for charging the battery at the charging terminal according to the battery status information.

[0062] In the embodiment of the present application, when the interactive parameter type is current, the battery charging parameter value is converted into the charging current value required for the battery to be charged at the charging terminal according to the battery status information; when the interactive parameter type is voltage, the battery charging parameter value is converted into the charging voltage value required for the battery to be charged at the charging terminal according to the battery status information; when the interactive parameter type is power, the battery charging parameter value is converted into the real-time charging power value required for the battery to be charged at the charging terminal according to the battery status information. In this embodiment, the battery charging parameter is converted into the charging parameter value required by the battery, and the charging parameter value corresponding to the battery charging parameter type is sent to the charging pile, which improves the effectiveness of the interaction with the charging pile; and, because the battery status information can reflect the current state of the battery, the charging parameter value determined by the current battery status information can give full play to the charging capacity of the battery at the charging terminal, improve the charging speed of the battery at the charging terminal, and thus reduce the charging time of the battery at the charging terminal.

[0063] In one embodiment, the method further comprises:

[0064] Detecting the charging status of the battery while sending the electrical parameter value to the charging pile;

[0065] When the charging state of the battery is abnormal, the interaction parameter type between the charging pile and the battery is obtained again to obtain a new interaction parameter type;

[0066] According to the new interaction parameter type and the battery status information, the battery charging parameter value is converted into a new electrical parameter value required for charging the battery at the charging terminal.

[0067] In the embodiment of the present application, when sending an electrical parameter value to the charging pile, the charging state of the battery is detected, and when there is an abnormality in the charging state of the battery, the interaction parameter type between the charging pile and the battery is obtained again, a new interaction parameter type is obtained, and finally, according to the new interaction parameter type and the battery status information, the battery charging parameter value is converted into a new electrical parameter value required for charging the battery at the charging terminal. In this embodiment, when there is an abnormality in the charging state of the battery, the charging parameter type is re-obtained and the charging parameter value is converted, which can reduce the abnormality of the battery during the charging process, thereby protecting the safety and life of the battery.

[0068] In one embodiment, the charging cut-off condition includes at least one of the following:

[0069] The battery voltage of the battery reaches a second voltage threshold;

[0070] The battery capacity of the battery reaches a second capacity threshold.

[0071] In the embodiment of the present application, the charging cut-off condition includes at least one of the following: the battery voltage of the battery reaches the second voltage threshold; the battery capacity of the battery reaches the second capacity threshold. In this embodiment, since the longer the battery charging time is, the higher the voltage is, the battery voltage and / or battery capacity are used as judgment indicators to judge whether the battery reaches the charging cut-off condition, thereby reducing the risk of overcharging, lithium deposition, etc. during battery charging, and improving the safety and reliability of battery charging.

[0072] In a second aspect, an embodiment of the present application further provides a charging device, including:

[0073] The acquisition module is used to acquire the charging mode of the battery at the charging end when the battery reaches the charging end; the dynamic change of the charging current of the battery under the charging mode;

[0074] A determination module, used to determine the electrical parameter value required for charging the battery at the charging terminal based on the charging mode and the battery status information;

[0075] The sending module is used to send the electrical parameter value to the charging pile of the battery until the charging cut-off condition of the battery is reached.

[0076] In a third aspect, an embodiment of the present application provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method provided in any embodiment of the first aspect when executing the computer program.

[0077] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method provided in any embodiment of the first aspect above.

[0078] In a fifth aspect, an embodiment of the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the method provided in any embodiment of the first aspect above.

[0079] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0081] Figure 1 A schematic diagram of current and voltage changes of an LFP battery at the end of charging in one embodiment;

[0082] Figure 2 A diagram showing an application environment of a charging method in an embodiment;

[0083] Figure 3 is a schematic flow chart of a charging method in one embodiment;

[0084] Figure 4 is a schematic flow chart of a charging method in another embodiment;

[0085] Figure 5 is a schematic flow chart of a charging method in another embodiment;

[0086] Figure 6 is a schematic flow chart of a charging method in another embodiment;

[0087] Figure 7 is a schematic flow chart of a charging method in another embodiment;

[0088] Figure 8is a schematic flow chart of a charging method in another embodiment;

[0089] Fig. 9 is a schematic flow chart of a charging method in another embodiment;

[0090] Fig.10 is a schematic flow chart of a charging method in another embodiment;

[0091] Fig.11 is a schematic flow chart of a charging method in another embodiment;

[0092] Fig.12 is a schematic flow chart of a charging method in another embodiment;

[0093] Fig.13 is a schematic flow chart of a charging method in another embodiment;

[0094] Fig.14 is a schematic flow chart of a charging method in another embodiment;

[0095] Fig.15 is a structural block diagram of a charging device in one embodiment;

[0096] Fig.16 is a structural block diagram of a charging device in another embodiment;

[0097] Fig.17 is a structural block diagram of a charging device in another embodiment;

[0098] Fig.18 is a structural block diagram of a charging device in another embodiment;

[0099] Fig.19 is a structural block diagram of a charging device in another embodiment;

[0100] Fig. 20 is a structural block diagram of a charging device in another embodiment;

[0101] Fig.21 is a structural block diagram of a charging device in another embodiment;

[0102] Fig. 22 is a structural block diagram of a charging device in another embodiment;

[0103] Fig.23 is a structural block diagram of a charging device in another embodiment;

[0104] Fig.24 is a structural block diagram of a charging device in another embodiment;

[0105] Fig.25 is a structural block diagram of a charging device in another embodiment;

[0106] Fig.26 is a structural block diagram of a charging device in another embodiment;

[0107] Fig. 27 is a structural block diagram of a charging device in another embodiment;

[0108] Fig.28 is a structural block diagram of a charging device in another embodiment;

[0109] Fig.29 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0110] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0111] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0112] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined. The reference to "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0113] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0114] With the development of new energy, electric vehicles are being used more and more widely.

[0115] At present, due to the risks of battery lithium plating, overcharging, etc., when charging the batteries of electric vehicles, they are usually charged with a small current at the charging end of the battery. However, this charging method causes the charging time at the charging end of the battery to be too long.

[0116] Take the battery as a 101Ah lithium iron phosphate (LiFePO4, LFP) battery, and the charging end is charged with a charging current of 0.1C. Figure 1 As shown, Figure 1 Schematic diagram of the current and voltage changes of the LFP battery at the end of charging, where the end of charging is the charging process from 98% state of charge (SOC) to 100% SOC; Figure 1 It can be seen that the charging time of the LFP battery at the end of charging is 654.4 seconds, the actual charging ampere-hours are 1.7 ampere-hours, and the charging power is 5.9 watts.

[0117] As the battery SOC increases, the battery voltage increases and the battery charging capacity decreases; therefore, in essence, the LFP battery can accept a current of 0.1C at a cut-off voltage of 3.65V, and should be able to accept a larger current at the beginning of the charging end when the voltage is about 3.4V, thus having a stronger charging capacity. However, with the current charging method, these charging capacities are wasted.

[0118] Based on the above considerations, in order to make full use of the charging capacity of the battery at the charging terminal and reduce the charging time of the battery at the charging terminal, the present application provides a charging method, which determines a charging mode in which the charging current of the battery at the charging terminal changes dynamically when the electrical equipment reaches the charging terminal protection condition; then determines the real-time electrical parameter value required for charging the battery at the charging terminal based on the charging mode and the battery status information, and charges the battery with the real-time electrical parameter value until the charging cut-off condition of the battery is reached, and stops charging the battery.

[0119] In such a charging method, the charging current of the battery at the charging terminal of the battery changes dynamically, which makes full use of the charging capacity of the battery at the charging terminal and reduces the charging time of the battery at the charging terminal; and, based on the battery status information and charging method, the real-time electrical parameter value required by the battery at the charging terminal is determined, so that the charging terminal of the battery will not be damaged when charging with the real-time electrical parameter value, while reducing the charging time of the charging terminal.

[0120] Of course, it should be understood that the technical effects that can be achieved by the charging method provided in the embodiments of the present application are not limited to these, and other technical effects can also be achieved, for example, charging terminal protection conditions and charging cut-off conditions are set for the battery, so that the battery can enter the charging mode of protecting the charging terminal charging and exit charging in time, so that the battery will not have problems such as overcharging and lithium deposition, and the safety and reliability of battery charging are improved, etc. The specific technical effects that can be achieved in the embodiments of the present application can be found in the following embodiments.

[0121] It should be noted that the above-mentioned LFP battery is only an example and may be other types of batteries. The present application does not limit the type of battery, and the charging method in the embodiment of the present application can be applied to all types of batteries.

[0122] The battery disclosed in the embodiments of the present application can be used in, but is not limited to, electrical equipment such as vehicles, ships or aircraft.

[0123] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0124] For the convenience of description, the following embodiments are described using an electrical device according to an embodiment of the present application. Figure 2 As shown, Figure 2 1 is a schematic diagram of the structure of an electric device 100 provided in an embodiment of the present application, wherein a battery 102 is a power source of the electric device 100 .

[0125] The following describes the charging method of the battery at the charging terminal by taking the battery management system in the electrical equipment as the execution subject. Figure 2 The battery management system is not shown).

[0126] In an exemplary embodiment, Figure 3 As shown, a charging method is provided, which is applied to Figure 2 The battery management system of the power-consuming equipment in FIG. 1 is taken as an example to illustrate, including the following steps:

[0127] S301, when the battery reaches the charging terminal, obtaining the charging mode of the battery at the charging terminal; the charging current of the battery changes dynamically under the charging mode.

[0128] The end of charging can be the period when the battery is about to be fully charged, and the end of charging is the end of charging during the charging process; for example, the battery charging process can be divided into the initial charging period, the middle charging period and the end of charging; among them, the battery from the start time of charging to the first charging time is regarded as the initial charging period of the battery; the battery from the end time of the initial charging period to the second charging time is regarded as the middle charging period of the battery; the battery from the end time of the middle charging period to the time when the battery is fully charged is regarded as the end of charging. For example, the period when the battery power is between 98% and 100% can be determined as the end of charging, that is, when the battery power reaches 98%, it is determined that the battery has reached the end of charging.

[0129] Optionally, reaching the charging terminal may also mean that the charging time of the battery reaches a preset time; for example, when the charging time of the battery reaches a preset time, it is determined that the battery reaches the charging terminal.

[0130] The charging mode of the battery at the charging terminal has been pre-set in the battery management system. Therefore, when the battery reaches the charging terminal protection condition, the charging mode of the battery at the charging terminal can be directly obtained from the storage library of the battery management system; wherein, the charging current of the battery at the charging terminal changes dynamically under this charging mode.

[0131] The charging mode may include the change of the charging current of the battery at the charging terminal, and therefore, the change of the charging current of the battery at the charging terminal may be directly obtained from the storage library of the battery management system.

[0132] For example, the charging current change of the battery at the charging end may be a linear change or a nonlinear change, etc.; the charging current change of the battery at the charging end may also carry the starting charging current and the cutting-off charging current of the battery at the charging end, and dynamically change between the starting charging current and the cutting-off charging current.

[0133] S302, based on the charging method and the battery status information, determine the electrical parameter values ​​required for charging the battery at the charging terminal.

[0134] The battery status information may be the battery status when being charged at the current moment, and the battery status information may include the battery temperature, SOC, voltage, and the like.

[0135] Based on the above charging method and battery status information, the electrical parameter values ​​required by the battery at the charging end are determined; wherein the electrical parameter values ​​may change in real time with the battery charging method and battery status information; the electrical parameter values ​​may be current values, voltage values, power values, etc.

[0136] The method for determining the electrical parameter values ​​required for charging the battery at the charging terminal may be to determine the electrical parameter values ​​required for charging the battery at the charging terminal based on the charging method and the battery status information through a pre-trained parameter calculation model; specifically, the charging method and the battery status information are input into the parameter calculation model, the charging method of the battery at the charging terminal and the battery status information at the current moment are analyzed through the parameter calculation model, and the electrical parameter values ​​required for charging the battery at the charging terminal are output.

[0137] Optionally, the electrical parameter value required for charging the battery at the charging terminal may be determined through a pre-set corresponding relationship; for example, the corresponding relationship includes electrical parameter values ​​corresponding to various status information of the battery under different charging methods; the electrical parameter value corresponding to the charging method of the battery at the charging terminal and the status information of the battery at the current moment may be obtained from the corresponding relationship, and the electrical parameter value is determined as the electrical parameter value required by the battery at the charging terminal at the current moment.

[0138] It should be noted that the electrical parameter values ​​required for charging the battery at the charging terminal may change in real time according to different battery status information.

[0139] S303, sending the electrical parameter value to the charging pile of the battery until the charging cut-off condition of the battery is reached.

[0140] After determining the electrical parameter value required for charging the battery at the charging end, the electrical parameter value can be sent to the charging pile corresponding to the battery, so that the charging pile charges the battery according to the electrical parameter value until the battery's charging cut-off condition is reached, instructing the charging pile to stop charging the battery.

[0141] Among them, after the battery management system sends the electrical parameter value to the charging pile of the battery, the charging pile charges the battery with the electrical parameter value. During the charging process of the battery at the charging terminal, the battery status information changes in real time. Therefore, after the battery management system detects that the battery status information has changed, the battery management system can re-determine the electrical parameter value required for charging the battery at the charging terminal based on the charging method of the battery at the charging terminal and the battery status information, and send the electrical parameter value to the charging pile of the battery until the battery management system detects that the battery has reached the charging cut-off condition, and then instructs the charging pile to stop charging the battery.

[0142] The charging cut-off condition may include at least one of the conditions of timing cut-off, voltage cut-off, current cut-off and temperature cut-off. For example, timing cut-off may indicate that the charging time of the charging pile for charging the battery at the charging end of the battery reaches a preset cut-off time; voltage cut-off may indicate that the voltage of the battery reaches a preset voltage threshold; current cut-off may indicate that the current of the battery reaches a preset current threshold; and temperature cut-off may indicate that the temperature of the battery reaches a preset temperature threshold.

[0143] In the charging method provided in the embodiment of the present application, when the battery reaches the charging terminal, the charging mode of the battery at the charging terminal is obtained; wherein the charging current of the battery changes dynamically under the charging mode; then based on the charging mode and the status information of the battery, the electrical parameter values ​​required for charging the battery at the charging terminal are determined, and finally the electrical parameter values ​​are sent to the charging pile of the battery until the charging cut-off condition of the battery is reached. In the method, when the charging process of the battery enters the charging terminal, the charging mode of the battery at the charging terminal is determined, and the charging current of the battery changes dynamically under the charging mode, which is equivalent to the dynamic change of the charging current during the charging process of the battery charging terminal; and, because the state information of the battery can reflect the current state of the battery, the charging mode of the battery is combined with the state information of the battery to determine the electrical parameter value required for charging the battery at the charging terminal, so that when the charging pile charges the battery at the battery charging terminal, it will not damage the battery and dynamically adjust the charging current of the battery, giving full play to the charging capacity of the battery at the charging terminal, thereby reducing the charging time of the battery charging terminal; and, the charging terminal protection condition and the charging cut-off condition are set for the battery, so that the battery can be charged in time through the charging mode that protects the charging terminal, and when the battery is full, the charging is stopped in time, so that the battery will not have the problem of overcharging and lithium precipitation, thereby improving the safety and reliability of the battery charging at the charging terminal.

[0144] How to determine whether a battery has reached the end of charging is described below through an embodiment. In an exemplary embodiment, the embodiment includes: determining that the battery has reached the end of charging when the battery voltage of the battery reaches a first voltage threshold; and / or determining that the battery has reached the end of charging when the battery capacity of the battery reaches a first capacity threshold.

[0145] Among them, the battery management system collects various status information of the batteries of electrical equipment in real time, including battery voltage, current, temperature and capacity.

[0146] Since the battery voltage gradually increases during the charging process, the battery voltage can be used as an indicator of whether the battery has reached the end of charging.

[0147] The battery management system can collect the battery voltage in real time through the voltage sensor; when the battery management system detects that the battery voltage of the battery reaches a first voltage threshold, it can determine that the battery has reached the end of charging.

[0148] Taking LFP battery as an example, the first voltage threshold may be 3.6V; if the battery is a nickel cobalt manganese oxide (Ni, Co, Mn; NCM) battery, the first voltage threshold may be 4.23V.

[0149] It should be noted that the value of the first voltage threshold may be different for different battery types; the specific value of the first voltage threshold may be determined through experiments or the charging capacity of the battery.

[0150] The end of battery charging indicates the stage when the battery power is about to reach the rated capacity. It can indicate the degree of battery charge. Therefore, the battery capacity can also be used as an indicator of whether the battery has reached the end of charging.

[0151] The battery capacity may represent the current available power of the battery; the battery capacity may be represented by the actual available power of the battery, or may be represented by the ratio of the actual available power of the battery to the rated capacity of the battery (SOC).

[0152] The battery management system will collect the actual available power of the battery in the power-consuming device in real time. Therefore, the battery management system can directly determine the collected actual available power of the battery as the battery capacity; the battery management system can also calculate the ratio of the actual available power to the rated capacity of the battery after collecting the actual available power of the battery, and determine the ratio as the battery capacity of the power-consuming device. The actual power of the battery can be collected by a battery capacity tester.

[0153] When the battery management system detects that the battery capacity has reached a first capacity threshold, it can determine that the battery has reached the end of charging.

[0154] Taking the battery capacity as SOC as an example, the first capacity threshold may be 98%. When the battery capacity reaches 98% SOC, it is determined that the battery of the electrical device reaches the charging end protection condition.

[0155] It should be noted that the value of the first capacity threshold may be different depending on the rated capacity of the battery; the specific value of the first capacity threshold may be determined through experiments or according to the rated capacity of the battery.

[0156] In the charging method provided in the embodiment of the present application, when the battery voltage of the battery reaches the first voltage threshold, it is determined that the battery has reached the charging terminal; and / or, when the battery capacity of the battery reaches the first capacity threshold, it is determined that the battery has reached the charging terminal. In this method, since the battery voltage will gradually increase during the charging process, whether the battery voltage reaches the first voltage threshold is used as a measure to determine whether the battery has reached the charging terminal protection condition, so that it is possible to accurately determine whether the battery charging has entered the charging terminal, thereby improving the accuracy and safety of the battery charging at the charging terminal; in addition, using the battery capacity as an indicator can more intuitively and accurately determine whether the battery has reached the charging terminal protection condition, thereby improving the accuracy and reliability of the battery charging at the charging terminal.

[0157] When the battery reaches the end of charge, the charging mode of the battery at the end of charge is determined. In an exemplary embodiment, Figure 4 As shown, obtaining the charging mode of the battery at the charging terminal includes the following steps:

[0158] S401, obtaining response information from the charging pile.

[0159] Among them, the response information of the charging pile may include the maximum output power, maximum output current, current output power, current output current, etc. supported by the charging pile.

[0160] During the interaction between the charging pile and the battery, the charging pile can send the response information of the charging pile to the battery management system in real time, and the battery management system can directly receive the response information of the charging pile sent by the charging pile.

[0161] S402, determining the response speed of the charging pile according to the response information of the charging pile.

[0162] The response speed of the charging pile can reflect the response time of the charging pile to the request of the battery management system. It can indicate the time required for the charging pile to start executing the corresponding request after the battery management system sends the request to the charging pile.

[0163] The response information of the charging pile may include the response speed of the charging pile, and therefore, the response speed of the charging pile may be directly acquired from the response information.

[0164] Optionally, the response speed of the charging pile may also be determined based on information included in the response information of the charging pile. Figure 5 As shown, according to the response information of the charging pile, determining the response speed of the charging pile includes the following steps:

[0165] S501, according to the response information of the charging pile, obtaining the first time of sending the historical electrical parameter value to the charging pile and the second time of charging the battery with the target electrical parameter through the charging pile.

[0166] The absolute value of the difference between the historical electrical parameter and the target electrical parameter is less than a preset difference threshold.

[0167] The historical electrical parameter value is the electrical parameter value required for battery charging determined by the battery management system at a historical moment, and the battery management system sends the historical electrical parameter value to the charging pile. The battery management system determines the moment when the historical electrical parameter value is sent to the charging pile as the first moment.

[0168] The charging pile responds to the historical electrical parameter values, and then charges the battery based on the historical electrical parameter values. However, the actual electrical parameters output by the charging pile in the early stage of charging the battery with the historical electrical parameters are unstable, and the charging pile may charge the battery with parameter values ​​lower than or higher than the historical electrical parameters. Therefore, the battery management system can detect in real time the moment when the charging pile charges the battery with the target electrical parameter, and determine the moment when the battery is charged with the target electrical parameter value as the second moment; wherein the target electrical parameter can be an electrical parameter range, for example, the battery management system sends a current value of 1A to the charging pile, and the target electrical parameter can be a current value of 0.9A-1.1A, that is, the moment when the current value of 1A is sent to the charging pile is determined as the first moment, and the moment when the battery is detected to be charged with a current value between 0.9A-1.1A is determined as the second moment.

[0169] Optionally, the second moment may also be the moment when the charging pile stably charges the battery with the target electrical parameters, that is, the second moment is the moment when the target electrical parameter value output by the charging pile is stable and close to the historical electrical parameter value; for example, the battery management system sends a current value of 1A to the charging pile, and the target electrical parameter may be a current value of 0.9A-1.1A, that is, the moment when the current value of 1A is sent to the charging pile is determined as the first moment, and the moment when the battery is charged with a current value between 0.9A-1.1A within the preset time period is determined as the second moment.

[0170] S502: Determine the duration for the charging pile to charge the battery according to the first moment and the second moment.

[0171] The time interval between the second moment and the first moment is determined as the duration of the charging pile charging the battery. The duration can be expressed as the duration of the charging pile executing and stably outputting the electrical parameter value after the battery management system sends the electrical parameter value to the charging pile, that is, the duration of the charging pile responding to the electrical parameter value sent by the battery management system.

[0172] S503, determining the response speed of the charging pile according to the duration.

[0173] The longer the duration is, the slower the response speed of the charging pile is, and the shorter the duration is, the faster the response speed of the charging pile is; therefore, the response speed of the charging pile can be determined based on the duration.

[0174] The response speed of the charging pile can be directly represented by the reciprocal of the time length, that is, the reciprocal of the time length is determined as the response speed of the charging pile.

[0175] Optionally, the duration may be substituted into a preset response speed calculation formula, and the calculation result of the response speed calculation formula may be determined as the response speed of the charging pile.

[0176] In the embodiment of the present application, first, according to the response information of the charging pile, the first moment of sending the historical electrical parameter value to the charging pile and the second moment of charging the battery with the target electrical parameter by the charging pile are obtained; wherein the absolute value of the difference between the historical electrical parameter and the target electrical parameter is less than the preset difference threshold; then, according to the first moment and the second moment, the duration of charging the battery by the charging pile is determined, and finally, according to the duration, the response speed of the charging pile is determined. In this embodiment, the charging pile needs to process the electrical parameter value sent by the battery management system. Therefore, by evaluating the duration of the charging pile responding to the electrical parameter value requested by the battery management system, the response speed of the charging pile is determined, which improves the accuracy of the response speed of the charging pile, making the subsequent determination of the charging method of the battery at the charging terminal more reliable.

[0177] S403, determining the charging method of the battery at the charging terminal according to the response speed of the charging pile.

[0178] In one embodiment, the charging mode of the battery at the charging terminal is determined according to the response speed of the charging pile, including: when the response speed of the charging pile is greater than a preset speed threshold, determining that the charging mode of the battery at the charging terminal is constant power charging.

[0179] That is, when the response speed of the charging pile is greater than a preset speed threshold, the battery can be charged in a constant power charging manner at the charging terminal of the battery.

[0180] In this embodiment, since constant power charging is an efficient charging method, the battery is charged at constant power when the response speed of the charging pile is faster, so that the charging pile can maintain charging stability more quickly, thereby improving the charging efficiency of the battery charging terminal.

[0181] It should be noted that the preset speed threshold can be determined according to actual conditions or charging tests.

[0182] In the charging method provided in the embodiment of the present application, the response information of the charging pile is obtained, and the response speed of the charging pile is determined according to the response information of the charging pile, and then the charging mode of the battery at the charging terminal is determined according to the response speed of the charging pile. In this method, since the response speed reflects the speed at which the charging pile charges the battery through the received electrical parameter value, the charging mode of the battery at the charging terminal is determined by the response speed of the charging pile, and a suitable charging mode can be selected for the battery at the charging terminal to maximize the charging speed of the battery at the charging terminal and reduce the charging time.

[0183] In the above embodiment, the charging mode of the battery at the charging terminal is determined by the response information of the charging pile. In actual situations, the charging mode of the battery at the charging terminal can also be determined by the battery status information. The specific process of determining the charging mode of the battery at the charging terminal by the current battery status information is described below through an embodiment.

[0184] The above embodiment determines the charging mode of the battery at the charging terminal by the response speed of the charging pile. The following is an embodiment to illustrate the implementation method of determining the charging mode of the battery by the characteristic information of the battery. In an exemplary embodiment, Figure 6 As shown, obtaining the charging mode of the battery at the charging terminal includes the following steps:

[0185] S601, obtaining characteristic information of the battery.

[0186] Among them, the characteristic information of the battery may include status information such as the battery's current, voltage, temperature, etc., and may also include attribute information such as the battery's charging characteristics, temperature characteristics, and battery type at the charging terminal; for example, the charging characteristics may include the charging rate of the battery during the charging process at the charging terminal, and the temperature characteristics may include the temperature changes of the battery during the charging process at the charging terminal.

[0187] The battery management system can collect the battery status information in real time through the status sensor; the battery attribute information may be pre-calibrated before the battery is charged and pre-stored in the battery management system, and the battery attribute information can be directly obtained from the storage library of the battery management system.

[0188] S602: Determine a charging method of the battery at the charging terminal according to the characteristic information of the battery.

[0189] During the battery charging process, if the battery temperature is too high, the battery's charging capacity will decrease. Therefore, the battery temperature can be used to select a suitable charging method for the battery at the charging end, which can maximize the battery's charging capacity at the charging end and increase the battery's charging speed at the charging end.

[0190] Therefore, when the characteristic information includes the current temperature of the battery, the charging method of the battery at the charging terminal is determined according to the characteristic information of the battery, including: when the current temperature of the battery is greater than a preset temperature threshold, determining that the charging method of the battery at the charging terminal is constant voltage charging.

[0191] That is, when the current temperature of the battery is greater than the preset temperature threshold, the battery can be charged at the charging end of the battery in a constant voltage charging manner. It should be noted that the preset temperature threshold can be determined according to actual conditions or charging tests.

[0192] In this embodiment, the temperature of the battery is greater than the preset temperature threshold, indicating that the temperature of the battery at the charging terminal is too high. In this case, the temperature of the battery should be gradually lowered during charging at the charging terminal. However, in the process of the battery decreasing from high temperature to normal temperature, the electrical response characteristics change greatly, which is not conducive to control. The constant voltage charging method can minimize the impact of the response characteristic changes on the battery, thereby reducing the charging time at the charging terminal of the battery while improving the reliability of charging at the charging terminal.

[0193] In the case where the characteristic information includes the battery type, in an exemplary embodiment, Figure 7 As shown, according to the characteristic information of the battery, determining the charging mode of the battery at the charging terminal includes the following steps:

[0194] S701, obtaining a charging method corresponding to a battery type from a preset charging method calibration table; the charging method calibration table includes a correspondence between a plurality of different battery types and charging methods.

[0195] The battery type can also be stored in the battery management system in advance. When the battery management system obtains the charging method of the battery at the charging terminal, it can directly obtain the battery type of the battery and obtain the charging method corresponding to the battery type from a pre-set charging method calibration table.

[0196] The charging method calibration table includes the correspondence between various battery types and charging methods; different battery types may have different charging methods at the charging terminal.

[0197] The process of constructing the charging mode calibration table may be to determine the charging mode of each battery at the charging terminal according to the charging capacity of each battery at the charging terminal, associate the type corresponding to each battery with the charging mode, obtain the correspondence between multiple different battery types and charging modes, and construct the charging mode calibration table according to the correspondence between multiple different battery types and charging modes.

[0198] It should be noted that the charging method corresponding to the battery can be determined according to the charging capacity of the battery at the charging terminal. The battery may include multiple types of batteries, and each type of battery includes multiple types. Even if the battery type is the same, the charging capacity of the battery at the charging terminal may be different. Therefore, the charging method of the battery at the charging terminal can be determined according to the battery type of the battery.

[0199] S702: Determine the charging method corresponding to the battery type as the charging method of the battery at the charging terminal.

[0200] The charging mode corresponding to the battery type obtained from the charging mode calibration table is determined as the charging mode of the battery at the charging terminal.

[0201] Among them, the charging method may include constant power charging, constant voltage charging, or a charging method combining constant voltage and constant power; for example, the charging method combining constant voltage and constant power may include: at the battery charging end, first performing constant voltage charging and then constant power charging, or first performing constant power charging and then constant voltage charging.

[0202] In the charging method provided in the embodiment of the present application, the charging method corresponding to the battery type is obtained from a preset charging method calibration table, and the charging method corresponding to the battery type is determined as the charging method of the battery at the charging terminal; wherein the charging method calibration table includes a plurality of correspondences between different battery types and charging methods. In this method, by pre-calibrating the correspondences between a plurality of battery types and charging methods, the charging method calibration table is directly used to determine the best charging method for the battery at the charging terminal, which simplifies the process of determining the charging method of the battery at the charging terminal and improves the response speed of charging the battery by the charging method at the charging terminal.

[0203] In the charging method provided in the embodiment of the present application, characteristic information of the battery is obtained, and the charging method of the battery at the charging terminal is determined based on the characteristic information of the battery. In this method, since the characteristic information represents the state and charging characteristics of the battery, the charging method of the battery at the charging terminal is determined based on the characteristic information of the battery, and the charging capacity of the battery at the charging terminal can be fully utilized through the determined charging method, the charging rate of the battery at the charging terminal can be increased, and the charging time of the battery at the charging terminal can be reduced.

[0204] The above embodiment describes that at the battery charging end, when the response speed of the charging pile is greater than a preset speed threshold, a constant power charging method is used to charge the battery, and when the current temperature of the battery is greater than a preset temperature threshold, a constant voltage charging method is used. The following is an embodiment to illustrate the situation where both of the above two situations are met or not met.

[0205] In an exemplary embodiment, when the response speed of the charging pile is greater than a preset speed threshold and the current temperature of the battery is greater than a preset temperature threshold, or when the response speed of the charging pile is less than or equal to the preset speed threshold and the current temperature of the battery is less than or equal to the preset temperature threshold, the priority of the constant power charging and constant voltage charging charging modes can be pre-set, and the charging mode with a higher priority can be used as the corresponding charging mode.

[0206] For example, when the response speed of the charging pile is greater than a preset speed threshold and the current temperature of the battery is greater than a preset temperature threshold, it is determined that the charging mode of the battery at the charging terminal is constant voltage charging; when the response speed of the charging pile is less than or equal to the preset speed threshold and the current temperature of the battery is less than or equal to the preset temperature threshold, it is determined that the charging mode of the battery at the charging terminal is constant power charging.

[0207] It should be noted that the specific charging method determined by priority in the embodiment of the present application can also be determined according to charging tests or actual needs.

[0208] The above embodiments are all about how to obtain the charging mode of the battery at the charging terminal. The following is about how to determine the real-time electrical parameter value required for charging the battery at the charging terminal. In an exemplary embodiment, Figure 8 As shown, based on the charging mode and the battery status information, determining the electrical parameter value required for charging the battery at the charging terminal includes the following steps:

[0209] S801, obtaining the interaction parameter type between the charging pile and the battery.

[0210] Among them, the interaction parameter type between the charging pile and the battery may include current, voltage and / or power. For example, if the charging pile responds to the current value sent by the battery management system, the interaction parameter type between the charging pile and the battery is current; if the charging pile responds to the voltage value sent by the battery management system, the interaction parameter type between the charging pile and the battery is voltage; if the charging pile responds to the power value sent by the battery management system, the interaction parameter type between the charging pile and the battery is power.

[0211] The way to obtain the interaction parameter type between the charging pile and the battery may be that before the charging pile charges the battery, the charging pile sends a response parameter type of the charging pile to the battery management system, that is, the interaction parameter type between the charging pile and the battery.

[0212] The method of obtaining the interaction parameter type between the charging pile and the battery may also be to obtain the transmission parameter type sent by the battery management system to the charging pile, and determine the transmission parameter type as the interaction parameter type between the charging pile and the battery.

[0213] S802: Determine a battery charging parameter value indicated by the charging mode according to the charging mode.

[0214] The battery charging parameter value indicated by the charging mode may indicate that the battery is charged with the battery charging parameter value under the charging mode.

[0215] The charging method is described as constant power charging. In the case where the charging method is constant power charging, the battery charging parameter value indicated by the charging method is a constant charging power. In an exemplary embodiment, Fig. 9 As shown, according to the charging mode, determining the battery charging parameter value indicated by the charging mode includes the following steps:

[0216] S901: Obtain a power value corresponding to a battery type of a battery from a preset type-power relationship.

[0217] The type-power relationship includes a correspondence between a plurality of different battery types and power values; the power value in the type-power relationship may represent the charging power required by the battery of the corresponding battery type at the charging terminal.

[0218] Therefore, when the charging mode of the charging terminal of the battery is constant power charging, the power value corresponding to the battery type of the battery can be obtained from the preset type-power relationship.

[0219] Among them, by performing charging tests on batteries of various different battery types at the charging terminal, the power value required for the corresponding battery at the charging terminal can be determined, and the type corresponding to each battery can be associated with the power value to obtain the corresponding relationship between the various different types and power values. According to the corresponding relationship between the various different battery types and power values, a type-power relationship can be constructed; the power value corresponding to the battery can be determined according to the charging capacity of the battery at the charging terminal.

[0220] The power value corresponding to the battery can be the full charge cut-off power that the battery can accept at the end of charging; Figure 1 For example, the full charge cut-off power that the battery can accept during the charging process at the end of the charging process is: 3.65×0.1×101=36.865 watts; therefore, the power value corresponding to the LFP battery can be determined as 36.865 watts.

[0221] S902: Determine the power value corresponding to the battery type as a constant charging power.

[0222] The power value corresponding to the battery type is determined as a constant charging power. The constant charging power is a constant charging power at the battery charging end. At the battery charging end, the battery can be charged with the constant charging power.

[0223] For example, the battery is charged at the battery charging terminal with a charging power of 36.865 watts, and 5.9 watt-hours of electricity need to be charged at the charging terminal. Therefore, it takes 576 seconds to charge 5.9 watt-hours of electricity through this constant charging power, which saves 12% of time compared to charging the battery with a small current of 0.1C at the charging terminal.

[0224] In the embodiment of the present application, the power value corresponding to the battery type of the battery is obtained from the preset type-power relationship, and the power value corresponding to the battery type is determined as the constant charging power; wherein the type-power relationship includes the correspondence between a plurality of different battery types and power values. In this method, the constant charging power of the battery under the constant power charging mode is determined by a pre-calibrated method, which simplifies the process of calculating the constant charging power and improves the charging efficiency; and the constant charging power is the full charge cut-off power, and the battery charging terminal is charged by the full charge cut-off power, and the charging current is dynamically adjusted, which can increase the charging rate of the battery charging terminal without damaging the battery, thereby reducing the charging time of the charging terminal.

[0225] In the case where the charging mode is constant voltage charging, the battery charging parameter value indicated by the charging mode is a constant charging voltage. In an exemplary embodiment, Fig.10 As shown, according to the charging mode, determining the battery charging parameter value indicated by the charging mode includes the following steps:

[0226] S1001, obtaining a voltage value corresponding to a battery type of a battery from a preset type-voltage relationship.

[0227] The type-voltage relationship includes the corresponding relationship between various battery types and voltage values.

[0228] The type-voltage relationship includes a correspondence between a plurality of different types and voltage values; the voltage value in the type-voltage relationship may represent a charging voltage required for a battery of the corresponding battery type at the charging end.

[0229] Therefore, when the charging mode of the charging terminal of the battery is constant voltage charging, the voltage value corresponding to the battery type of the battery can be obtained from the preset type-voltage relationship.

[0230] By performing charging tests on batteries of various different battery types at the charging terminal, the voltage value required for the corresponding battery at the charging terminal can be determined, and the type corresponding to each battery can be associated with the voltage value to obtain the corresponding relationship between the various different types and voltage values. According to the corresponding relationship between the various different battery types and voltage values, a type-voltage relationship can be constructed; the voltage value corresponding to the battery can be the full charge cut-off voltage of the battery.

[0231] S1002, determining a voltage value corresponding to the battery type as a constant charging voltage.

[0232] The voltage value corresponding to the battery type is determined as a constant charging voltage. The constant charging voltage is a constant charging voltage at the battery charging end. At the battery charging end, the battery can be charged with the constant charging voltage.

[0233] In the embodiment of the present application, the voltage value corresponding to the battery type of the battery is obtained from the preset type-voltage relationship, and the voltage value corresponding to the battery type is determined as the constant charging voltage; wherein the type-voltage relationship includes a correspondence between a plurality of different battery types and voltage values. In this embodiment, the constant charging voltage of the battery under constant voltage charging is determined by a pre-calibrated method, which simplifies the process of calculating the constant charging voltage and improves the charging efficiency; and the constant charging voltage can be the full charge cut-off voltage, and the battery charging terminal is charged by the full charge cut-off voltage, and the charging current is dynamically adjusted, which can increase the charging rate of the battery charging terminal without damaging the battery, thereby reducing the charging time of the charging terminal.

[0234] S803: Convert the battery charging parameter value into an electrical parameter value required for charging the battery at the charging terminal according to the interaction parameter type and the battery status information.

[0235] The parameter type of the electrical parameter value may be an interactive parameter type, and the battery may be charged according to the electrical parameter value required by the battery at the charging terminal; the battery status information may be the status information corresponding to the moment when the electrical parameter value required by the battery at the charging terminal is calculated. At different charging moments at the charging terminal, the battery status information changes, and the electrical parameter value required by the battery may also change.

[0236] The battery charging parameter values ​​can be converted into the electrical parameter values ​​required for charging the battery at the charging terminal through a preset parameter type conversion model; specifically, the interaction parameter type and the battery status information, as well as the battery charging parameter value are input into the parameter type conversion model, and the battery charging parameter value is converted based on the interaction parameter type and the status information through the parameter type conversion model, and the electrical parameter value is output, and the electrical parameter value output by the parameter type conversion model is determined as the electrical parameter value required for charging the battery at the charging terminal.

[0237] In the charging method provided in the embodiment of the present application, the interaction parameter type between the charging pile and the battery is first obtained, and the battery charging parameter value indicated by the charging method is determined according to the charging method, and the battery charging parameter value is converted into the real-time electrical parameter value required for the battery to be charged at the charging terminal according to the interaction parameter type and the battery status information. In this method, the charging method can indicate how the battery is charged, the battery status information can indicate the real-time status of the battery, and the interaction parameter type can indicate the interaction method between the charging pile and the battery. Therefore, according to the charging method, the battery charging parameter value indicated by the charging method can be determined, making the battery charging parameter value more reliable; and according to the interaction parameter type between the charging pile and the battery and the battery status information, the battery charging parameter value is converted into the electrical parameter value required by the battery, which can accurately control the charging process of the battery at the charging terminal, dynamically adjust the charging current of the battery at the charging terminal, maximize the charging capacity of the battery at every moment at the charging terminal, and improve the charging speed of the battery at the charging terminal, thereby reducing the charging time of the battery at the charging terminal.

[0238] In an exemplary embodiment, Fig.11 As shown, obtaining the interaction parameter type between the charging pile and the battery includes the following steps:

[0239] S1101, obtaining multiple charging parameter types currently available for the charging pile and the usage rate of each charging parameter type.

[0240] Among them, the charging parameter type of the charging pile can indicate what parameter type the charging pile can use to charge the battery. The charging parameter type may include current, voltage and / or power. The usage rate of the charging parameter type may indicate the frequency of charging the battery with the corresponding charging parameter type when the charging pile charges the battery.

[0241] The battery management system can interact with the charging pile and send a request to the charging pile, and the charging pile sends the currently available charging parameter types and the usage rate of the charging parameter types to the battery management system.

[0242] S1102: Determine the charging parameter type whose usage rate meets the preset condition as the interaction parameter type between the charging pile and the battery.

[0243] The preset conditions may include the highest usage rate, the lowest usage rate, or the usage rate being greater than a preset usage rate threshold.

[0244] The most frequently used charging parameter type in the charging pile can be determined as the interaction parameter type between the charging pile and the battery; for example, if the currently available charging parameter types of the charging pile are current and voltage, and the usage rate of current charging is greater than the usage rate of voltage charging, then current is used as the charging parameter type between the charging pile and the battery, that is, the charging pile and the battery interact through current, and the battery management system sends the current value required by the battery to the charging pile, and the charging pile charges the battery with this current value.

[0245] The charging parameter type with the lowest usage rate in the charging pile can also be determined as the interaction parameter type between the charging pile and the battery; for example, if the charging parameter types currently available in the charging pile are voltage and power, and the usage rate of power charging is greater than the usage rate of voltage charging, then voltage is used as the charging parameter type between the charging pile and the battery, that is, the charging pile and the battery interact through voltage, and the battery management system sends the voltage value required by the battery to the charging pile, and the charging pile charges the battery at this voltage value.

[0246] It should be noted that if there are multiple charging parameter types that meet the preset conditions, the interaction parameter type between the charging pile and the battery can be determined from the multiple charging parameter types that meet the preset conditions according to the priority of the charging parameter type.

[0247] In the charging method provided in the embodiment of the present application, multiple charging parameter types currently available for the charging pile and the usage rate of each charging parameter type are obtained, and the charging parameter type whose usage rate meets the preset conditions is determined as the interaction parameter type between the charging pile and the battery. In this method, the preset conditions can be set in advance by the user. Therefore, by selecting the charging parameter type whose usage rate meets the preset conditions as the interaction parameter type between the charging pile and the battery, the user's charging experience and charging efficiency can be improved.

[0248] In an exemplary embodiment, Fig.12 As shown, according to the interaction parameter type and the battery status information, converting the battery charging parameter value into the electrical parameter value required for charging the battery at the charging terminal includes the following steps:

[0249] S1201: When the interactive parameter type is current, convert the battery charging parameter value into a charging current value required for charging the battery at a charging terminal according to the battery status information.

[0250] If the interaction parameter type is current, it can indicate that the charging pile responds to a current signal. Therefore, when the battery management system interacts with the charging pile, it needs to send a current value to the charging pile. The charging pile responds to the current value sent by the battery management system and charges the battery with the received current value.

[0251] Therefore, if the interactive parameter type is current, the electrical parameter value should be a charging current value. In the case where the interactive parameter type is current, the battery charging parameter value is converted into a charging current value required for charging the battery at the charging terminal according to the battery status information.

[0252] Among them, based on the above embodiments, it can be known that the charging mode includes constant power charging and constant voltage charging. Accordingly, the battery charging parameter value may include constant charging power and constant charging voltage.

[0253] Specifically, when the battery charging parameter value is a constant charging power, the constant charging power is converted into a charging current value required by the battery at the charging terminal according to the battery status information. For example, the battery status information may include the charging voltage of the battery, and the ratio of the constant charging power to the charging voltage of the battery may be determined as the charging current of the battery, that is, the charging current value required for charging the battery at the charging terminal; the charging current value may also be determined by, after obtaining the ratio of the constant charging power to the charging voltage of the battery, determining the sum of the ratio and a preset current compensation value as the charging current value required for charging the battery at the charging terminal.

[0254] When the battery charging parameter value is a constant charging voltage, the constant charging voltage is converted into a charging current value required by the battery at the charging end according to the battery status information. For example, the battery status information and the constant charging voltage are input into a preset control algorithm, and the charging current value required by the battery at the charging end is output. The control algorithm takes the charging voltage and status information of the battery as input and the current as output. The control algorithm may be a control algorithm that controls by proportional, integral and differential (PID); the battery status information may include information such as the battery capacity.

[0255] In an embodiment of the present application, when the interaction parameter type is current, the battery charging parameter is converted into a charging current value, and the charging current value is sent to the charging pile, thereby improving the effectiveness of the interaction with the charging pile; and, since the battery status information can reflect the current state of the battery, the charging current value determined by the current status information of the battery can fully exert the charging capacity of the battery at the charging terminal, improve the charging speed of the battery at the charging terminal, thereby reducing the charging time of the battery at the charging terminal.

[0256] S1202: When the interactive parameter type is voltage, convert the charging parameter value of the battery into a charging voltage value required for charging the battery at a charging terminal according to the battery status information.

[0257] If the interaction parameter type is voltage, it can indicate that the charging pile responds to a voltage signal. Therefore, when the battery management system interacts with the charging pile, it needs to send a voltage value to the charging pile. The charging pile responds to the voltage value sent by the battery management system and charges the battery with the received voltage value.

[0258] Therefore, if the interactive parameter type is voltage, the real-time electrical parameter value is the charging voltage value. In the case where the interactive parameter type is voltage, the battery charging parameter value is converted into the charging voltage value required for charging the battery at the charging terminal according to the battery status information.

[0259] Among them, based on the above embodiments, it can be known that the charging mode includes constant power charging and constant voltage charging. Accordingly, the battery charging parameter value may include constant charging power and constant charging voltage.

[0260] Specifically, when the battery charging parameter value is a constant charging power, the constant charging power is converted into a charging voltage value required by the battery at the charging terminal according to the battery status information. For example, the battery status information may include the charging current of the battery, and the ratio of the constant charging power to the charging current of the battery may be determined as the charging voltage of the battery, that is, the charging voltage value required for charging the battery at the charging terminal; the charging voltage value may also be determined by obtaining the ratio of the constant charging voltage to the charging current of the battery, and then determining the sum of the ratio and a preset voltage compensation value as the charging voltage value required for charging the battery at the charging terminal.

[0261] When the battery charging parameter value is a constant charging voltage, the constant charging voltage of the battery can be directly determined as the charging voltage value required for charging the battery at the charging terminal; or the real-time voltage compensation value for charging the battery at a constant charging voltage can be determined based on the battery status information, and the sum of the real-time voltage compensation value and the constant charging voltage can be determined as the charging voltage value required for charging the battery at the charging terminal.

[0262] The battery status information may be substituted into the voltage compensation algorithm to obtain a real-time voltage compensation value, wherein the battery status information may include information such as the battery temperature and capacity.

[0263] In an embodiment of the present application, when the interaction parameter type is voltage, the battery charging parameter is converted into a charging voltage value, and the charging voltage value is sent to the charging pile, thereby improving the effectiveness of the interaction with the charging pile; and, since the battery status information can reflect the current state of the battery, the charging voltage value determined by the current status information of the battery can fully exert the charging capacity of the battery at the charging terminal, improve the charging speed of the battery at the charging terminal, thereby reducing the charging time of the battery at the charging terminal.

[0264] S1203: When the interaction parameter type is power, convert the charging parameter value of the battery into a charging power value required for charging the battery at the charging terminal according to the battery status information.

[0265] If the interaction parameter type is power, it can indicate that the charging pile responds to a power signal. Therefore, when the battery management system interacts with the charging pile, it needs to send a power value to the charging pile. The charging pile responds to the power value sent by the battery management system and charges the battery with the received power value.

[0266] Therefore, if the interactive parameter type is power, the real-time electrical parameter value is the charging power value. In the case where the interactive parameter type is power, the battery charging parameter value is converted into the charging power value required for charging the battery at the charging terminal according to the battery status information.

[0267] Among them, based on the above embodiments, it can be known that the charging mode includes constant power charging and constant voltage charging. Accordingly, the battery charging parameter value may include constant charging power and constant charging voltage.

[0268] Specifically, when the battery charging parameter value is a constant charging power, the constant charging power of the battery can be directly determined as the charging power value required for the battery to be charged at the charging terminal; or the real-time power compensation value for charging the battery at a constant charging power can be determined based on the battery status information, and the sum of the real-time power compensation value and the constant charging power can be determined as the charging power value required for the battery to be charged at the charging terminal.

[0269] The battery status information may be substituted into the power compensation algorithm to obtain a real-time power compensation value; wherein the battery status information may include information such as the battery temperature and capacity.

[0270] In an embodiment of the present application, when the interaction parameter type is power, the battery charging parameter is converted into a charging power value, and the charging power value is sent to the charging pile, thereby improving the effectiveness of the interaction with the charging pile; and, since the battery status information can reflect the current state of the battery, the charging power value determined by the current status information of the battery can fully exert the charging capacity of the battery at the charging terminal, improve the charging speed of the battery at the charging terminal, thereby reducing the charging time of the battery at the charging terminal.

[0271] In the charging method provided in the embodiment of the present application, when the interactive parameter type is current, the battery charging parameter value is converted into the charging current value required for the battery to be charged at the charging terminal according to the battery status information; when the interactive parameter type is voltage, the battery charging parameter value is converted into the charging voltage value required for the battery to be charged at the charging terminal according to the battery status information; when the interactive parameter type is power, the battery charging parameter value is converted into the real-time charging power value required for the battery to be charged at the charging terminal according to the battery status information. In this method, the battery charging parameter is converted into the charging parameter value required by the battery, and the charging parameter value corresponding to the battery charging parameter type is sent to the charging pile, thereby improving the effectiveness of the interaction with the charging pile; and, since the battery status information can reflect the current state of the battery, the charging parameter value determined by the current battery status information can give full play to the charging capacity of the battery at the charging terminal, improve the charging speed of the battery at the charging terminal, and thus reduce the charging time of the battery at the charging terminal.

[0272] In an exemplary embodiment, Fig.13 As shown, this embodiment includes the following steps:

[0273] S1301, detecting the charging state of the battery while sending the electrical parameter value to the charging pile.

[0274] After sending the electrical parameter value to the charging pile, the battery management system can detect the charging state of the battery, that is, it can detect whether the battery is charged with the electrical parameter value.

[0275] When it is detected that the battery is charged with the electrical parameter value, it is determined that the charging state of the battery is normal; when it is detected that the battery is not charged with the electrical parameter value, it is determined that the charging state of the battery is abnormal.

[0276] It should be noted that, taking into account the loss during the charging process of the charging pile to the battery, the detection that the battery is charged with a candidate electrical parameter value can be determined as the battery being charged with an electrical parameter value; wherein the candidate electrical parameter value represents a value that fluctuates around the electrical parameter value.

[0277] S1302: When the charging state of the battery is abnormal, re-execute the step of obtaining the interaction parameter type between the charging pile and the battery to obtain a new interaction parameter type.

[0278] When the charging state of the battery is abnormal, the step of obtaining the interaction parameter type between the charging pile and the battery may be performed again to obtain a new interaction parameter type.

[0279] When there is an abnormality in the battery charging status, it can be determined that the corresponding charging parameter type is not available in the charging pile. The multiple charging parameter types currently available to the charging pile and the usage rate of each available charging parameter type can be re-acquired, and the charging parameter type whose usage rate meets the preset conditions can be determined as the new interaction parameter type between the charging pile and the battery.

[0280] It should be noted that the implementation method of re-obtaining multiple charging parameter types currently available to the charging pile and the usage rate of each available charging parameter type in the embodiment of the present application, and determining the charging parameter type whose usage rate meets the preset conditions as the new interaction parameter type between the charging pile and the battery, is the same as the principle of obtaining multiple charging parameter types currently available to the charging pile and the usage rate of each charging parameter type, and determining the charging parameter type whose usage rate meets the preset conditions as the new interaction parameter type between the charging pile and the battery in the above-mentioned embodiment, and the embodiments of the present application will not be repeated here.

[0281] S1303: Convert the battery charging parameter value into a new electrical parameter value required for charging the battery at the charging terminal according to the new interaction parameter type and the battery status information.

[0282] In the embodiment of the present application, the implementation method of converting the battery charging parameter value into the new electrical parameter value required for charging the battery at the charging terminal according to the new interaction parameter type and the battery status information is the same as the implementation method of converting the battery charging parameter value into the electrical parameter value required for charging the battery at the charging terminal according to the interaction parameter type and the battery status information in the above embodiment, and the embodiment of the present application will not be repeated here.

[0283] In the charging method provided in the embodiment of the present application, when sending an electrical parameter value to the charging pile, the charging state of the battery is detected, and when there is an abnormality in the charging state of the battery, the interaction parameter type between the charging pile and the battery is obtained again, a new interaction parameter type is obtained, and finally, according to the new interaction parameter type and the battery status information, the battery charging parameter value is converted into a new electrical parameter value required for charging the battery at the charging terminal. In this method, when there is an abnormality in the charging state of the battery, the charging parameter type is re-obtained and the charging parameter value is converted, which can reduce the abnormality of the battery during the charging process, thereby protecting the safety and life of the battery.

[0284] In the process of charging the battery at the battery charging terminal, the real-time electrical parameter value required for charging the battery at the charging terminal is determined according to the charging method of the battery at the charging terminal and the real-time status information of the battery, and the real-time electrical parameter value is sent to the charging pile, so that the charging pile charges the battery according to the real-time electrical parameter value. If the battery does not reach the charging cut-off condition, the charging pile is controlled to charge the battery with the real-time electrical parameter value updated in real time until the battery reaches the charging cut-off condition, and the charging pile is controlled to stop charging the battery.

[0285] In an exemplary embodiment, the charging cut-off condition includes at least one of the following: the battery voltage of the battery reaches a second voltage threshold; the battery capacity of the battery reaches a second capacity threshold.

[0286] In an optional embodiment, the battery management system determines that the battery of the electrical equipment has reached the charging cut-off condition when it detects that the battery voltage of the battery has reached a second voltage threshold; the second voltage threshold may be the charging cut-off voltage of the battery, and when the battery voltage reaches the second voltage threshold, it determines that the battery is fully charged.

[0287] If the battery is an LFP battery, the second voltage threshold may be 3.65 volts; if the battery is an NCM battery, the second voltage threshold may be 4.3 volts.

[0288] It should be noted that the value of the second voltage threshold may be different for different battery types; the specific value of the second voltage threshold may be determined through experiments or the charging capacity of the battery.

[0289] In another optional embodiment, the battery management system determines that the battery of the electrical equipment has reached the charging cut-off condition when it detects that the battery capacity of the battery has reached a second capacity threshold; if the battery capacity is the actual available power of the battery, the second capacity threshold may be the rated capacity of the battery; if the battery capacity is expressed as the SOC of the battery, the second capacity threshold may be 100% SOC.

[0290] In the charging method provided in the embodiment of the present application, the charging cut-off condition includes at least one of the following: the battery voltage of the battery reaches the second voltage threshold; the battery capacity of the battery reaches the second capacity threshold. In this method, since the longer the battery charging time is, the higher the voltage is, the battery voltage and / or battery capacity are used as judgment indicators to judge whether the battery reaches the charging cut-off condition, thereby reducing the risk of overcharging, lithium deposition, etc. during battery charging, and improving the safety and reliability of battery charging.

[0291] In an exemplary embodiment, the present application also provides a charging method, such as Fig.14 As shown, this embodiment includes the following steps:

[0292] S1401, during the battery charging process, detecting whether the battery has reached the charging end.

[0293] If the battery voltage of the battery reaches a first voltage threshold, it is determined that the battery has reached the charging end; if the battery voltage of the battery does not reach the first voltage threshold, it is determined that the battery has not reached the charging end.

[0294] S1402: When the battery reaches the charging terminal, obtain the temperature of the battery and the response speed of the charging pile.

[0295] S1403: When the response speed of the charging pile is greater than a preset speed threshold, determine that the charging mode of the battery at the charging terminal is constant power charging, and obtain a pre-calibrated constant charging power value.

[0296] S1404: When the temperature of the battery is greater than a preset temperature threshold, determine that the charging mode of the battery at the charging terminal is constant voltage charging, and obtain a pre-calibrated constant charging voltage value.

[0297] It should be noted that when the response speed of the charging pile is greater than the preset speed threshold and the temperature of the battery is greater than the preset temperature threshold, or when the response speed of the charging pile is less than or equal to the preset speed threshold and the temperature of the battery is less than or equal to the preset temperature threshold, the charging mode of the battery at the charging terminal is determined by the preset priority as constant power charging or constant voltage charging.

[0298] S1405: Convert the constant charging voltage value or constant charging power value of the battery into a real-time electrical parameter value according to the interaction parameter type between the charging pile and the battery.

[0299] Among them, the parameter type of the real-time charging parameter is an interactive parameter type; if the interactive parameter type is current, the real-time electrical parameter value is the real-time charging current value; if the interactive parameter type is voltage, the real-time electrical parameter value is the real-time charging voltage value; if the interactive parameter type is power, the real-time electrical parameter value is the real-time charging power value.

[0300] S1406, sending the real-time electrical parameter value to the charging pile, so that the charging pile charges the battery according to the real-time electrical parameter value until the battery reaches the battery charging cut-off condition.

[0301] If the battery voltage of the battery reaches a second voltage threshold, it is determined that the battery reaches a charging cut-off condition of the battery; and the second voltage threshold is greater than the first voltage threshold.

[0302] In an embodiment of the present application, a charging mode of constant power charging or constant voltage charging of the battery at the charging terminal is pre-set, and the real-time electrical parameter value is determined by the interactive parameter type with the charging pile, and the battery is charged by the charging pile with the real-time electrical parameter value; in this way, constant power charging or constant voltage charging of the battery at the charging terminal is achieved through the real-time electrical parameter value.

[0303] 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.

[0304] Based on the same inventive concept, the embodiment of the present application also provides a charging device for implementing the above-mentioned charging method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more charging device embodiments provided below can refer to the limitations on the charging method above, and will not be repeated here.

[0305] In an exemplary embodiment, Fig.15 As shown, a charging device 1500 is provided, including: an acquisition module 1501, a determination module 1502 and a sending module 1503, wherein:

[0306] The acquisition module 1501 is used to acquire the charging mode of the battery at the charging end when the battery reaches the charging end; the charging current of the battery changes dynamically under the charging mode;

[0307] A determination module 1502, configured to determine an electrical parameter value required for charging the battery at a charging terminal based on the charging mode and the battery status information;

[0308] The sending module 1503 is used to send the electrical parameter value to the charging pile of the battery until the charging cut-off condition of the battery is reached.

[0309] In one embodiment, Fig.16 As shown, the device 1500 also includes:

[0310] The first judgment module 1602 is used to determine that the battery has reached the end of charging when the battery voltage of the battery reaches a first voltage threshold.

[0311] The second judgment module 1602 is used to determine that the battery has reached the end of charging when the battery capacity of the battery reaches a first capacity threshold.

[0312] In one embodiment, Fig.17 As shown, the acquisition module 1501 includes:

[0313] The first acquisition unit 1701 is used to acquire response information of the charging pile;

[0314] The first determining unit 1702 is used to determine the response speed of the charging pile according to the response information of the charging pile;

[0315] The second determining unit 1703 is used to determine the charging mode of the battery at the charging terminal according to the response speed of the charging pile.

[0316] In one embodiment, Fig.18 As shown, the first determining unit 1702 includes:

[0317] The first acquisition subunit 1801 is used to acquire, according to the response information of the charging pile, a first moment of sending the historical electrical parameter value to the charging pile and a second moment of charging the battery with the target electrical parameter through the charging pile; the absolute value of the difference between the historical electrical parameter and the target electrical parameter is less than a preset difference threshold;

[0318] The first determining subunit 1802 is used to determine the duration for the charging pile to charge the battery according to the first moment and the second moment;

[0319] The second determining subunit 1803 is used to determine the response speed of the charging pile according to the duration.

[0320] In one embodiment, Fig.19 As shown, the second determining unit 1703 includes:

[0321] The third determining subunit 1901 is used to determine that the charging mode of the battery at the charging terminal is constant power charging when the response speed of the charging pile is greater than a preset speed threshold.

[0322] In one embodiment, Fig. 20 As shown, the acquisition module 1501 includes:

[0323] The second acquisition unit 2001 is used to acquire characteristic information of the battery;

[0324] The third determining unit 2002 is used to determine the charging mode of the battery at the charging terminal according to the characteristic information of the battery.

[0325] In one embodiment, Fig.21 As shown, the characteristic information includes the current temperature of the battery; the third determination unit 2002 includes:

[0326] The fourth determining subunit 2101 is used to determine that the charging mode of the battery at the charging terminal is constant voltage charging when the current temperature of the battery is greater than a preset temperature threshold.

[0327] In one embodiment, Fig. 22 As shown, the characteristic information includes the battery type; the third determination unit 2002 includes:

[0328] The second acquisition subunit 2201 is used to obtain the charging method corresponding to the battery type from a preset charging method calibration table; the charging method calibration table includes a correspondence between multiple different battery types and charging methods;

[0329] The fifth determining subunit 2202 is used to determine the charging mode corresponding to the battery type as the charging mode of the battery at the charging terminal.

[0330] In one embodiment, Fig.23 As shown, the determination module 1502 includes:

[0331] The third acquisition unit 2301 is used to acquire the interaction parameter type between the charging pile and the battery;

[0332] The fourth determining unit 2302 is used to determine the battery charging parameter value indicated by the charging mode according to the charging mode;

[0333] The conversion unit 2303 is used to convert the battery charging parameter value into the electrical parameter value required for charging the battery at the charging terminal according to the interaction parameter type and the battery status information.

[0334] In one embodiment, Fig.24 As shown, the third acquisition unit 2301 includes:

[0335] The third acquisition subunit 2401 is used to acquire multiple charging parameter types currently available to the charging pile and the usage rate of each charging parameter type;

[0336] The sixth determining subunit 2402 is configured to determine the charging parameter type whose usage rate meets a preset condition as the interaction parameter type between the charging pile and the battery.

[0337] In one embodiment, Fig.25 As shown, when the charging mode is constant power charging, the battery charging parameter value indicated by the charging mode is constant charging power; the fourth determining unit 2302 includes:

[0338] The fourth acquisition subunit 2501 is used to acquire the power value corresponding to the battery type of the battery from the preset type-power relationship; the type-power relationship includes the correspondence between multiple different battery types and power values;

[0339] The seventh determining subunit 2502 is configured to determine the power value corresponding to the battery type as a constant charging power.

[0340] In one embodiment, Fig.26As shown, when the charging mode is constant voltage charging, the battery charging parameter value indicated by the charging mode is a constant charging voltage; the fourth determining unit 2302 includes:

[0341] The fifth acquisition subunit 2601 is used to acquire a voltage value corresponding to a battery type of the battery from a preset type-voltage relationship; the type-voltage relationship includes a correspondence between multiple different battery types and voltage values;

[0342] The eighth determining subunit 2602 is configured to determine the voltage value corresponding to the battery type as a constant charging voltage.

[0343] In one embodiment, Fig. 27 As shown, the conversion unit 2303 includes:

[0344] The first conversion subunit 2701 is used for converting the battery charging parameter value into the charging current value required for charging the battery at the charging terminal according to the battery status information when the interactive parameter type is current.

[0345] The second conversion subunit 2702 is used to convert the charging parameter value of the battery into the charging voltage value required for charging the battery at the charging terminal according to the battery status information when the interactive parameter type is voltage.

[0346] The third conversion subunit 2703 is used to convert the charging parameter value of the battery into the charging power value required for charging the battery at the charging terminal according to the battery status information when the interaction parameter type is power.

[0347] In one embodiment, Fig.28 As shown, the device 1500 also includes:

[0348] The detection module 2801 is used to detect the charging state of the battery when sending the electrical parameter value to the charging pile;

[0349] An updating module 2802 is used to re-execute the acquisition of the interaction parameter type between the charging pile and the battery to acquire a new interaction parameter type when the charging state of the battery is abnormal;

[0350] The conversion module 2803 is used to convert the battery charging parameter value into a new electrical parameter value required for charging the battery at the charging terminal according to the new interaction parameter type and the battery status information.

[0351] In one embodiment, the charging cut-off condition includes at least one of the following: the battery voltage of the battery reaches a second voltage threshold; the battery capacity of the battery reaches a second capacity threshold.

[0352] Each module in the above charging device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each module.

[0353] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Fig.29 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, 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, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store charging data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the steps of the charging method provided in any of the above embodiments of the present application are implemented.

[0354] Those skilled in the art will understand that Fig.29 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.

[0355] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0356] The implementation principles and technical effects of each step implemented by the processor in this embodiment are similar to those of the above-mentioned charging method and will not be repeated here.

[0357] 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 in the above-mentioned method embodiments are implemented.

[0358] The implementation principles and technical effects of the steps implemented when the computer program in this embodiment is executed by the processor are similar to the principles of the above-mentioned charging method and will not be repeated here.

[0359] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0360] The implementation principles and technical effects of the steps implemented when the computer program in this embodiment is executed by the processor are similar to the principles of the above-mentioned charging method and will not be repeated here.

[0361] It should be noted that the data involved in this application (including but not limited to data used for analysis, stored data, displayed data, etc.) 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.

[0362] 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 the present 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.

[0363] 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.

[0364] 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 charging method, characterized in that: The method comprises: When the battery reaches the charging terminal, obtaining a charging mode of the battery at the charging terminal; and dynamically changing the charging current of the battery under the charging mode; Determining electrical parameter values ​​required for charging the battery at the charging terminal based on the charging method and the state information of the battery; The electrical parameter value is sent to a charging station of the battery until a charging cut-off condition of the battery is reached.

2. The method according to claim 1, characterized in that: The method further comprises: In the case where the battery voltage of the battery reaches a first voltage threshold, determining that the battery has reached the charging end; and / or, In a case where the battery capacity of the battery reaches a first capacity threshold, it is determined that the battery reaches the charging terminal.

3. The method according to claim 1 or 2, characterized in that: The obtaining of the charging mode of the battery at the charging terminal includes: Obtaining response information of the charging pile; Determining a response speed of the charging pile according to the response information of the charging pile; The charging mode of the battery at the charging terminal is determined according to the response speed of the charging pile.

4. The method according to claim 3, characterized in that The step of determining the response speed of the charging pile according to the response information of the charging pile includes: According to the response information of the charging pile, a first time when the historical electrical parameter value is sent to the charging pile and a second time when the battery is charged with the target electrical parameter by the charging pile are obtained; the absolute value of the difference between the historical electrical parameter and the target electrical parameter is less than a preset difference threshold; Determining the duration for the charging pile to charge the battery according to the first moment and the second moment; According to the duration, a response speed of the charging pile is determined.

5. The method according to claim 3, characterized in that: The step of determining the charging mode of the battery at the charging terminal according to the response speed of the charging pile includes: When the response speed of the charging pile is greater than a preset speed threshold, it is determined that the charging mode of the battery at the charging terminal is constant power charging.

6. The method according to claim 1 or 2, characterized in that: The obtaining of the charging mode of the battery at the charging terminal includes: Acquiring characteristic information of the battery; A charging method of the battery at the charging terminal is determined according to the characteristic information of the battery.

7. The method according to claim 6, characterized in that The characteristic information includes the current temperature of the battery; and determining the charging mode of the battery at the charging terminal according to the characteristic information of the battery includes: When the current temperature of the battery is greater than a preset temperature threshold, it is determined that the charging mode of the battery at the charging terminal is constant voltage charging.

8. The method according to claim 6, characterized in that The characteristic information includes a battery type; and determining a charging method of the battery at the charging terminal according to the characteristic information of the battery includes: Obtaining a charging method corresponding to the battery type from a preset charging method calibration table; the charging method calibration table includes a correspondence between a plurality of different battery types and charging methods; The charging mode corresponding to the battery type is determined as the charging mode of the battery at the charging terminal.

9. The method according to claim 1 or 2, characterized in that: The determining, based on the charging mode and the state information of the battery, the electrical parameter value required for charging the battery at the charging terminal includes: Obtaining the interaction parameter type between the charging pile and the battery; According to the charging mode, determining a battery charging parameter value indicated by the charging mode; The battery charging parameter value is converted into an electrical parameter value required for charging the battery at the charging terminal according to the interaction parameter type and the status information of the battery.

10. The method according to claim 9, characterized in that The obtaining the interaction parameter type between the charging pile and the battery includes: Obtain multiple charging parameter types currently available for the charging pile and the usage rate of each charging parameter type; The charging parameter type whose usage rate meets the preset condition is determined as the interaction parameter type between the charging pile and the battery.

11. The method according to claim 9, characterized in that When the charging mode is constant power charging, the battery charging parameter value indicated by the charging mode is constant charging power; The step of determining, according to the charging mode, a battery charging parameter value indicated by the charging mode includes: Obtaining a power value corresponding to the battery type of the battery from a preset type-power relationship; The type-power relationship includes a correspondence between a plurality of different battery types and power values; A power value corresponding to the battery type is determined as the constant charging power.

12. The method according to claim 9, characterized in that When the charging mode is constant voltage charging, the battery charging parameter value indicated by the charging mode is a constant charging voltage; The step of determining, according to the charging mode, a battery charging parameter value indicated by the charging mode includes: Obtaining a voltage value corresponding to the battery type of the battery from a preset type-voltage relationship; the type-voltage relationship includes a correspondence between a plurality of different battery types and voltage values; A voltage value corresponding to the battery type is determined as the constant charging voltage.

13. The method according to claim 9, characterized in that The converting the battery charging parameter value into an electrical parameter value required for charging the battery at the charging terminal according to the interaction parameter type and the battery status information includes: In the case where the interactive parameter type is current, converting the battery charging parameter value into a charging current value required for charging the battery at the charging terminal according to the battery status information; In the case where the interactive parameter type is voltage, converting the charging parameter value of the battery into a charging voltage value required for charging the battery at the charging terminal according to the state information of the battery; In the case where the interaction parameter type is power, the charging parameter value of the battery is converted into a charging power value required for charging the battery at the charging terminal according to the state information of the battery.

14. The method according to claim 9, characterized in that The method further comprises: In the case of sending the electrical parameter value to the charging pile, detecting the charging state of the battery; When the charging state of the battery is abnormal, re-executing the step of obtaining the interaction parameter type between the charging pile and the battery to obtain a new interaction parameter type; The battery charging parameter value is converted into a new electrical parameter value required for charging the battery at the charging terminal according to the new interaction parameter type and the battery status information.

15. The method according to claim 1 or 2, characterized in that: The charging cut-off condition includes at least one of the following: The battery voltage of the battery reaches a second voltage threshold; The battery capacity of the battery reaches a second capacity threshold.

16. A charging device, characterized in that: The device comprises: An acquisition module, used for acquiring, when the battery reaches a charging terminal, a charging mode of the battery at the charging terminal; and a dynamic change of the charging current of the battery under the charging mode; A determination module, configured to determine an electrical parameter value required for charging the battery at the charging terminal based on the charging mode and the state information of the battery; The sending module is used to send the electrical parameter value to the charging pile of the battery until the charging cut-off condition of the battery is reached.

17. 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 15 are implemented.

18. 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 15 are implemented.

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