CHARGING PARAMETER ADJUSTMENT METHOD, CONTROLLER, TERMINAL DEVICE, AND STORAGE MEDIUM

Abstract

The embodiments of the present application provide a charging parameter adjustment method, a controller, a terminal device, and a storage medium, which includes the steps of: acquiring a current battery internal resistance of a battery and a level increment voltage between two adjacent output levels (S100); acquiring a variation range of a parameter of an electrical signal of a charging assembly at the level increment voltage according to the battery internal resistance and the level increment voltage (S200); acquiring a current electrical signal parameter of the charging assembly and a threshold parameter corresponding to the electrical signal parameter (S300); acquiring a target output level of a charger according to the electrical signal parameter, the threshold parameter, and the variation range of the parameter, and adjusting the current output level of the charger to the target output level (S400).

Description

[Technical field]

[0001] This application is filed based on a Chinese patent application bearing application number 202111276486.8 and filing date October 29, 2021, and claims priority to the Chinese patent application, the entire contents of which are hereby incorporated by reference into this application.

[0002] The embodiments of the present application relate to, but are not limited to, the technical field of charging, and in particular to a charging parameter adjustment method, a controller, a terminal device, and a computer-readable storage medium. [Background technology]

[0003] Currently, the internal resistance of the battery in terminal devices varies depending on the power capacity, temperature, and deterioration of the battery. In addition, the internal resistance at the time of shipment varies greatly depending on the battery model. Therefore, there is often uncertainty in the battery internal resistance. The uncertainty in the battery internal resistance affects the control accuracy of the charging parameters, which can easily lead to overcurrent voltage and charging parameters that do not reach the optimum state. Summary of the Invention [Problem to be solved by the invention]

[0004] The following is a summary of the subject matter described in detail herein, which is not intended to limit the scope of protection of the claims.

[0005] The embodiments of the present application provide a charging parameter adjustment method, a controller, a terminal device, and a computer-readable storage medium. [Means for solving the problem]

[0006] In a first aspect, an embodiment of the present application provides a charging parameter adjustment method applied to a controller, the controller being in communication with a charging assembly, the charging assembly including a battery and a charger for charging the battery, the charger having multiple output levels set. The charging parameter adjustment method includes: Obtaining a current battery internal resistance of the battery and a level increment voltage between two adjacent output levels; obtaining a variation range of a parameter of the electrical signal of the charging assembly at the level increment voltage based on the battery internal resistance and the level increment voltage; obtaining a current electrical signal parameter of the charging assembly and a threshold parameter corresponding to the electrical signal parameter; obtaining a target output level of the charger based on the electrical signal parameter, the threshold parameter and a variation range of the parameter, and adjusting a current output level of the charger to the target output level.

[0007] In a second aspect, the present embodiment also provides a controller, the controller including a memory, a processor, and a computer program stored in the memory and executable by the processor, the computer program executing the processor to implement the charging parameter adjustment method according to the first aspect.

[0008] In a third aspect, the present embodiment also provides a terminal device, including the controller according to the second aspect above.

[0009] In a fourth aspect, the present embodiment also provides a method for producing a composition comprising: When executed by the processor, The charging parameter adjustment method according to the first aspect is carried out. current A computer-readable storage medium having stored thereon computer-executable instructions for performing the method of the present invention is provided.

[0010] Other features and advantages of the present invention will be set forth in the following specification, and in part will be obvious from the specification, or may be learned by the practice of the present invention. The objectives and other advantages of the present invention may be achieved and obtained by the structure particularly pointed out in the description, claims and drawings.

[0011] The drawings are used to provide a further understanding of the technical solution of the present application, constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical solution of the present application, but are not intended to limit the technical solution of the present application. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is a schematic diagram of a controller for implementing a charging parameter adjustment method according to an embodiment of the present application. [Diagram 2] 2 is a flowchart of a charging parameter adjustment method according to an embodiment of the present application. [Diagram 3] 4 is a flowchart showing a method for acquiring battery internal resistance in a charging parameter adjustment method according to an embodiment of the present application; [Figure 4] 10 is a flowchart showing a method for acquiring battery internal resistance in a charging parameter adjustment method according to another embodiment of the present application; [Diagram 5] 10 is a flowchart showing a method for acquiring battery internal resistance in a charging parameter adjustment method according to another embodiment of the present application; [Figure 6] 4 is a flowchart showing a calculation of a parameter fluctuation range in a stable constant current stage in a charging parameter adjustment method according to an embodiment of the present application; [Figure 7] 4 is a flowchart showing a method for calculating a target output level in a charging parameter adjustment method according to an embodiment of the present application. [Figure 8] 10 is a flowchart showing a method for calculating a target output level in a charging parameter adjustment method according to another embodiment of the present application. [Figure 9]10 is a flowchart showing a method for calculating a target output level in a charging parameter adjustment method according to another embodiment of the present application. [Figure 10] 1 is a flowchart illustrating selection of a target output level from a plurality of target levels in a charging parameter adjustment method according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] In order to more clearly understand the objectives, technical solutions and advantages of the present application, the technical solutions of the present application will be described in more detail below with reference to the drawings and examples, in which the specific examples described in the present application are only used to explain the technical solutions of the present application, and are not used to limit the technical solutions of the present application.

[0014] Although a functional module division is shown in the schematic diagram of the device and a logical order is shown in the flowchart, in some cases the module division within the device may differ, or the steps shown or described may be performed in a different order than shown in the flowchart. The terms "first," "second," etc. in the specification, claims, or above drawings are not used to describe a particular order or priority, but are used to distinguish between similar objects.

[0015] In the related art, for the battery of the terminal device, the internal resistance of the battery changes under the influence of the power amount of the battery, the temperature of the battery, the degree of deterioration of the battery, etc., for example, the internal resistance of the same model of battery changes according to the following three conditions, including but not limited to: First, as the power amount of the battery increases, the internal resistance of the battery increases. Second, as the temperature of the battery decreases, the internal resistance of the battery increases. Third, as the battery deteriorates, the internal resistance of the battery increases. In addition, there is a large difference in the internal resistance at the time of shipment depending on the battery model. Therefore, there is often uncertainty in the internal resistance of the battery. The uncertainty of the internal resistance of the battery affects the control accuracy of the charging parameters by the control software, so it is easy to cause overcurrent voltage and charging parameters not to reach the optimal state. In addition, the battery calibration data is also affected by floating voltage, etc., so only a relatively close impedance value can be found, and it is not possible to ensure that the software voltage adjustment algorithm is still accurate after the battery deteriorates.

[0016] Based on the above situation, the embodiment of the present application provides a charging parameter adjustment method, a controller, a terminal device, and a computer-readable storage medium. The charging parameter adjustment method is applied to a controller. The controller communicates with a charging assembly. The charging assembly includes a battery and a charger for charging the battery, in which multiple output levels are set. The method includes, but is not limited to, the following steps. First, the controller obtains a current battery internal resistance of the battery and a level increment voltage between two adjacent output levels. Next, the controller calculates a fluctuation range of a parameter of an electrical signal of the charging assembly at the level increment voltage based on the battery internal resistance and the level increment voltage. After that, the controller obtains a current electrical signal parameter of the charging assembly and a threshold parameter corresponding to the electrical signal parameter. Finally, the controller obtains a target output level of the charger based on the electrical signal parameter, the threshold parameter, and the fluctuation range of the parameter, and adjusts the current output level of the charger to the target output level. According to the technical solution of the embodiment of the present application, the battery internal resistance is calculated, and the fluctuation range of the charger's parameters such as the battery voltage and battery current fluctuation according to one level is calculated from the battery internal resistance, and the number of output levels to be increased or decreased by controlling the charger is calculated from the parameter fluctuation range, the battery's current true electrical signal parameters and the threshold parameters. Therefore, the embodiment of the present application can solve the problem of inaccurate adjustment of the charger's charging parameters by accurately calculating the battery internal resistance.

[0017] Hereinafter, the embodiments of the present application will be further described with reference to the drawings.

[0018] As shown in FIG. 1, FIG. 1 is a schematic diagram of a controller 110 for implementing a charging parameter adjusting method according to an embodiment of the present application.

[0019] In the example of Figure 1, the controller 110 includes a processor 111 and a memory 112. The processor 111 and the memory 112 may be connected via a bus or other means, and Figure 1 illustrates the connection via a bus.

[0020] The memory 112 may be used as a non-transitory computer-readable storage medium to store non-transitory software programs and non-transitory computer-executable programs. Additionally, the memory 112 may include high-speed random access memory, and may also include non-transitory memory such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory 112 includes memory 112 located remotely relative to the processor 111, which may be connected to the controller 110 via a network. Examples of such networks include, but are not limited to, the Internet, a corporate intranet, a local area network, a mobile communication network, and combinations thereof.

[0021] The controller 110 may be applied to a 3G communication network system, an LTE communication network system, a 5G communication network system, and subsequent evolved mobile communication network systems, and the present embodiment is not particularly limited thereto.

[0022] The controller 110 shown in FIG. 1 is not intended to be limiting of embodiments of the present application and may include more or fewer components than shown, combine some components, or have different component arrangements.

[0023] In the controller 110 shown in FIG. 1, the processor 111 may call up a charging parameter adjustment program stored in the memory 112 to execute a charging parameter adjustment method.

[0024] Based on the above controller 110, various embodiments of the terminal device of the present application are given below.

[0025] A terminal device according to an embodiment of the present application includes, but is not limited to, a charging assembly and the controller described above, where the controller is in communication with the charging assembly, the charging assembly including a battery and a charger with multiple output levels for charging the battery.

[0026] Based on the above terminal devices, various embodiments of the charging parameter adjustment method of the present application are given below.

[0027] As shown in FIG. 2, FIG. 2 is a flow chart of a charging parameter adjustment method according to an embodiment of the present application. The charging parameter adjustment method is applied to a controller. The controller communicates with a charging assembly. The charging assembly includes a battery and a charger with multiple output levels for charging the battery. The charging parameter adjustment method includes, but is not limited to, steps S100, S200, S300, and S400.

[0028] Step S100: Obtain the current battery internal resistance of the battery and the level increment voltage between two adjacent output levels.

[0029] Step S200: Obtain a variation range of a parameter of an electrical signal of a charging assembly at a level increment voltage according to a battery internal resistance and a level increment voltage.

[0030] Step S300: Obtain a current electrical signal parameter of a charging assembly and a threshold parameter corresponding to the electrical signal parameter.

[0031] Step S400: Obtain a target output level of the charger according to the electrical signal parameters, the threshold parameters and the variation range of the parameters, and adjust the current output level of the charger to the target output level.

[0032] In some embodiments of the present application, the battery internal resistance may be calculated, and the variation range of a charger's parameters such as battery voltage and battery current variation at one level may be calculated from the battery internal resistance, and the number of output levels to be increased or decreased by controlling the charger may be calculated from the parameter variation range, the battery's current true electrical signal parameters, and the threshold parameters. Therefore, the embodiments of the present application may solve the problem of inaccurate adjustment of the charger's charging parameters by accurately calculating the battery internal resistance.

[0033] In the embodiment of the present application, the level increment voltage is the difference in output voltage between two adjacent output levels, where the level increment voltage can be either a voltage increase or a voltage decrease. In addition, in the embodiment of the present application, the level increment voltage between any two adjacent output levels is the same. For example, when the output voltage of the first output level of the charger is 1V and the output voltage of the second output level is 1.5V, the level increment voltage of the second output level relative to the first output level is 0.5V, and the level increment voltage of the first output level relative to the second output level is -0.5V.

[0034] In addition, the fluctuation range of the parameters of the electrical signal of the charging assembly at the level increment voltage means, in some embodiments, how much fluctuation range the electrical signal of the charging assembly corresponds to when the charger adjusts one output level.

[0035] The above types of electrical signals, parameter fluctuation ranges, electrical signal parameters, and threshold parameters may include, but are not limited to, the following four cases:

[0036] First case: when the electrical signal is a battery current signal of the battery, the parameter fluctuation range corresponds to the fluctuation range of the battery current parameter, the electrical signal parameter corresponds to the current battery current parameter of the battery, and the threshold parameter corresponds to the battery current threshold parameter of the battery.

[0037] Second case: when the electrical signal is a battery voltage signal of the battery, the parameter fluctuation range corresponds to the fluctuation range of the battery voltage parameter, the electrical signal parameter corresponds to the current battery voltage parameter of the battery, and the threshold parameter corresponds to the battery voltage threshold parameter of the battery.

[0038] Third case: when the electrical signal is a charger output current signal of the charger, the parameter fluctuation range corresponds to the fluctuation range of the charger output current parameter, the electrical signal parameter corresponds to the current charger output current parameter of the charger, and the threshold parameter corresponds to the charger output current threshold parameter of the charger.

[0039] Fourth case: when the electrical signal is a charger output voltage signal of the charger, the parameter fluctuation range corresponds to the fluctuation range of the charger output voltage parameter, the electrical signal parameter corresponds to the current charger output voltage parameter of the charger, and the threshold parameter corresponds to the charger output voltage threshold parameter of the charger.

[0040] Moreover, the threshold parameter may be a preset threshold.

[0041] Furthermore, the current battery internal resistance of the battery may be acquired in step S100 by calculation using any of the methods shown in FIGS.

[0042] As shown in Fig. 3, Fig. 3 is a flowchart illustrating a method for obtaining the battery internal resistance in the charging parameter adjustment method according to an embodiment of the present application. The above step S100 for obtaining the current battery internal resistance of the battery includes, but is not limited to, steps S510, S520, and S530.

[0043] Step S510: While the charger is charging the battery, obtain the charging current of the charging assembly.

[0044] Step S520: When the charging current changes from the first preset threshold to the second preset threshold, obtain the voltage change amount and the current change amount of the battery.

[0045] Step S530: The current internal resistance of the battery is calculated from the voltage change amount and the current change amount.

[0046] Exemplarily, embodiments of the present application may passively calculate the current battery internal resistance of a battery. During the initial stage of charging, i.e., from no charging current to charging current, when the charging current reaches a certain threshold, the battery internal resistance is calculated by the formula Rbatt=ΔVbatt / ΔIbatt, where Rbattt is the battery internal resistance, ΔVbatt is the voltage change, and ΔIbatt is the current change.

[0047] The first and second preset thresholds may be preset thresholds, and the first and second preset thresholds may not be equal. When the first preset threshold is zero, it means that the current battery internal resistance of the battery is calculated during the initial stage of the charging, that is, from the state where there is no charging current to the state where there is charging current.

[0048] Also, as shown in Fig. 4, Fig. 4 is a flowchart illustrating a method for acquiring the battery internal resistance in the charging parameter adjustment method according to an embodiment of the present application. The acquisition of the current battery internal resistance of the battery in the above step S100 includes, but is not limited to, steps S610, S620, and S630.

[0049] Step S610: While the charger is charging the battery, obtain the current fluctuation range of the charging current of the charging assembly.

[0050] Step S620: When the current fluctuation range reaches the first preset fluctuation range, the voltage change amount and the current change amount of the battery in the current fluctuation range are obtained.

[0051] Step S630: The current internal resistance of the battery is calculated from the voltage change amount and the current change amount.

[0052] For example, the present embodiment may passively calculate the current battery internal resistance of the battery. When the charge current fluctuation exceeds a certain threshold due to heat generation or current limit during charging, the voltage change amount and current change amount of the battery in the current fluctuation range may be obtained, and the battery internal resistance may be calculated by Rbatt=ΔVbatt / ΔIbatt, where Rbatt is the battery internal resistance, ΔVbatt is the voltage change amount, and ΔIbatt is the current change amount.

[0053] The first preset fluctuation range may be a preset fluctuation threshold value.

[0054] Also, as shown in Fig. 5, Fig. 5 is a flowchart illustrating a method for acquiring the battery internal resistance in the charging parameter adjustment method according to an embodiment of the present application. The acquisition of the current battery internal resistance of the battery in the above step S100 includes, but is not limited to, steps S710, S720, and S730.

[0055] Step S710: While adjusting the output level of the charger, obtain the charging parameters of the battery after adjustment.

[0056] Step S720: When the absolute value of the difference between the adjusted charging parameters and the target charging parameters reaches a preset difference, the battery voltage change amount and current change amount during the adjustment are obtained.

[0057] Step S730: The current internal resistance of the battery is calculated from the voltage change amount and the current change amount.

[0058] For example, the embodiment of the present application may actively calculate the current battery internal resistance of the battery. After the software algorithm performs voltage regulation, if it finds that the difference between the charging parameters of the battery after voltage regulation and the target charging parameters as the target values ​​is large, it may actively reduce the charging parameters to a certain threshold, obtain the voltage change and current change of the battery during regulation, and calculate the battery internal resistance according to the formula Rbatt=ΔVbatt / ΔIbatt, where Rbatt is the battery internal resistance, ΔVbatt is the voltage change, and ΔIbatt is the current change.

[0059] The above charging parameters may include, but are not limited to, battery voltage parameters or battery current parameters.

[0060] The above-mentioned predetermined difference may be a predetermined threshold value of the difference.

[0061] 6, which is a flowchart of calculating the fluctuation range of the parameter in the stable constant current stage in the charging parameter adjustment method according to an embodiment of the present application. The above step S200 includes, but is not limited to, steps S810 and S820.

[0062] Step S810: Obtain the charging current of the charging assembly.

[0063] Step S820: If the fluctuation range of the charging current within the preset time is smaller than a second preset fluctuation range, obtain a fluctuation range of the parameter of the electrical signal of the charging assembly at the level increment voltage based on the battery internal resistance and the level increment voltage.

[0064] In order to calculate the parameter fluctuation range from the battery internal resistance and the level increment voltage in the stable constant current stage of charging, the embodiment of the present application also obtains the charging current of the charging assembly. If the fluctuation range of the charging current within a preset time is smaller than a second preset fluctuation range, it indicates that the current charging is in the stable constant current stage, so the controller calculates the parameter fluctuation range of the electrical signal of the charging assembly at the level increment voltage from the battery internal resistance and the level increment voltage in the stable constant current stage of charging.

[0065] The second predetermined fluctuation range may be a predetermined fluctuation threshold value.

[0066] In addition, the above electrical signal may include four cases: a battery current signal, a battery voltage signal, a charger output current signal, and a charger output voltage signal, but is not limited to these. Therefore, a method for calculating the parameter fluctuation range for the following four different cases is proposed.

[0067] First case: When the electrical signal is a battery current signal of a battery, the fluctuation width of the battery current parameter is calculated by the formula ΔIbatt'≈(Vchg_step / 2) / Rbatt, where ΔIbatt' is the fluctuation width of the battery current parameter, Vchg_step is the level increment voltage, and Rbatt is the battery internal resistance.

[0068] Second case: When the electrical signal is a battery voltage signal of a battery, the fluctuation range of the battery voltage parameter is calculated by the formula: ΔVbatt'≒Vchg_step / 2+ΔIbatt'*Rbatt, ΔIbatt'≒(Vchg_step / 2) / Rbatt, where ΔVbatt' is the fluctuation range of the battery voltage parameter, Vchg_step is the level increment voltage, ΔIbatt' is the fluctuation range of the battery current parameter, and Rbatt is the battery internal resistance.

[0069] Third case: When the electrical signal is a charger output current signal of the charger, the fluctuation range of the charger output current parameter is calculated by ΔIbus≒ΔIbatt'*2, ΔIbatt'≒(Vchg_step / 2) / Rbatt, where ΔIbus is the fluctuation range of the charger output current parameter, ΔIbatt' is the fluctuation range of the battery current parameter, Vchg_step is the level increment voltage, and Rbatt is the battery internal resistance.

[0070] Fourth case: When the electrical signal is the charger output voltage signal of the charger, the fluctuation range of the charger output voltage parameter is calculated by the following formulas: ΔVbus ≈ ΔVbatt' * 2, ΔVbatt' ≈ Vchg_step / 2 + ΔIbatt' * Rbatt, ΔIbatt' ≈ (Vchg_step / 2) / Rbatt, where ΔVbus is the fluctuation range of the charger output voltage parameter, ΔVbatt' is the fluctuation range of the battery voltage parameter, Vchg_step is the level increment voltage, ΔIbatt' is the fluctuation range of the battery current parameter, and Rbatt is the battery internal resistance.

[0071] Moreover, in the above step S400, the calculation may be performed and acquired using any of the methods shown in FIGS.

[0072] 7, which is a flowchart showing a calculation method of a target output level in the charging parameter adjustment method according to an embodiment of the present application. The above step S400 includes, but is not limited to, steps S910, S920, and S930.

[0073] Step S910: If the threshold parameter is greater than the sum of the electrical signal parameter and the variation range of the parameter, a first difference between the threshold parameter and the electrical signal parameter is calculated.

[0074] Step S920: A first ratio between the first difference and the fluctuation range of the parameter is calculated, and a first target level step number by which the charger is to increase is determined according to the first ratio.

[0075] Step S930: Calculate a target output level of the charger from the first target level step number and the current output level of the charger.

[0076] Also, as shown in Fig. 8, Fig. 8 is a flowchart showing a method for calculating a target output level in a charging parameter adjustment method according to another embodiment of the present application. The above step S400 includes step S1000, but is not limited thereto.

[0077] Step S1000: If the threshold parameter is smaller than the sum of the electrical signal parameter and the parameter variation range, and the threshold parameter is larger than the electrical signal parameter, the current output level of the charger is set as the target output level of the charger.

[0078] 9, which is a flowchart showing a method for calculating a target output level in a charging parameter adjustment method according to another embodiment of the present application. The above step S400 includes, but is not limited to, steps S1110, S1120, and S1130.

[0079] Step S1110: If the threshold parameter is less than the electrical signal parameter, calculate a second difference between the electrical signal parameter and the threshold parameter.

[0080] Step S1120: A second ratio between the second difference and the fluctuation range of the parameter is calculated, and a second target level step number by which the charger is to be lowered is determined according to the second ratio.

[0081] Step S1130: Calculate a target output level of the charger from the second target level step number and the current output level of the charger.

[0082] Based on the three methods of Figures 7 to 9 above, the above electrical signal may include four cases: battery current signal, battery voltage signal, charger output current signal, and charger output voltage signal, but is not limited to these, so we propose a calculation method for the target output level in the following four different cases.

[0083] First, when the electrical signal is a battery current signal, the embodiments of the present application can determine whether to require the charger to step up or step down based on the magnitude Ibatt of the current value of the actual current of the battery at present and the current fluctuation range ΔIbatt’ at one level. When the battery current threshold parameter Ibatt_ocp_alm > Ibatt + ΔIbatt’, the number of levels that the charger needs to increase can be calculated by the formula num = (Ibatt_ocp_alm - Ibatt) / ΔIbatt’. When the battery current threshold parameter Ibatt_ocp_alm < Ibatt + ΔIbatt’ and Ibatt_ocp_alm > Ibatt, the voltage can be maintained constant, that is, the current output level can be maintained constant. When the battery current threshold parameter Ibatt_ocp_alm < Ibatt, the number of levels that the charger needs to decrease can be calculated by the formula num = (Ibatt - Ibatt_ocp_alm) / ΔIbatt’.

[0084] Second, when the electrical signal is a battery voltage signal, the embodiments of the present application can determine whether to require the charger to step up or step down based on the magnitude Vbatt of the actual voltage value of the battery at present and the voltage fluctuation range ΔVbatt’ at one level. When the battery voltage threshold parameter Vbatt_ovp_alm > Vbatt + ΔVbatt’, the number of levels that the charger needs to increase can be calculated by the formula num = (Vbatt_ovp_alm - Vbatt) / ΔVbatt’. When the battery voltage threshold parameter Vbatt_ovp_alm < Vbatt + ΔVbatt’ and Vbatt_ovp_alm > Vbatt, the voltage can be maintained constant, that is, the current output level can be maintained constant. When the battery voltage threshold parameter Vbatt_ovp_alm < Vbatt, the number of levels by which the charger needs to be lowered can be calculated by the formula num = (Vbatt - Vbatt_ovp_alm) / ΔVbatt’.

[0085] Thirdly, when the electrical signal is the charger output current signal, the embodiments of the present application can determine whether to require the charger to step up or step down based on the magnitude Ibus of the current actual current value of the charger and the fluctuation range ΔIbus of the charger output current per level. When the charger output current threshold parameter Ibus_ocp_alm > Ibus + ΔIbus, the number of levels by which the charger needs to be increased can be calculated by the formula num = (Ibus_ocp_alm - Ibus) / ΔIbus. When the charger output current threshold parameter Ibus_ocp_alm < Ibus + ΔIbus and Ibus_ocp_alm > Ibus, the voltage can be maintained constant, that is, the current output level can be maintained constant. When the charger output current threshold parameter Ibus_ocp_alm < Ibus, the number of levels by which the charger needs to be lowered can be calculated by the formula num = (Ibus - Ibus_ocp_alm) / ΔIbus.

[0086] Fourthly, when the electrical signal is the charger output voltage signal, the embodiments of the present application can determine whether to require the charger to step up or step down based on the magnitude Vbus of the current actual voltage value of the charger and the fluctuation range ΔVbus of the charger output voltage per level. When the charger output voltage threshold parameter Vbus_ovp_alm > Vbus + ΔVbus, the number of levels by which the charger needs to be increased can be calculated by the formula num = (Vbus_ovp_alm - Vbus) / ΔVbus. When the charger output voltage threshold parameter Vbus_ovp_alm < Vbus + ΔVbus and Vbus_ovp_alm > Vbus, the voltage can be maintained constant, that is, the current output level can be maintained constant. When the charger output voltage threshold parameter Vbus_ovp_alm < Vbus, the number of levels the charger needs to decrease can be calculated by the formula num = (Vbus - Vbus_ovp_alm) / ΔVbus.

[0087] Also, as shown in FIG. 10, FIG. 10 is a flowchart showing the selection of the target output level from a plurality of target levels in the charging parameter adjustment method according to an embodiment of the present application. When the electrical signal includes a plurality of different electrical signals, the target output level includes a plurality of different target levels, and the plurality of electrical signals and the plurality of target levels correspond one-to-one. The charging parameter adjustment method according to the embodiment of the present application further includes steps S1210 and S1220, but is not limited thereto.

[0088] Step S1210: Obtain a plurality of different target levels.

[0089] Step S1220: Select the target level with the lowest number of levels as the target output level.

[0090] The above electrical signal may include four cases of battery current signal, battery voltage signal, charger output current signal, and charger output voltage signal, but is not limited thereto, so there are corresponding target levels for each case. In contrast, the embodiment of the present application selects, as the number of levels to increase or decrease the minimum value obtained by combining each condition, while ensuring that Ibatt_ocp_alm, Vbatt_ovp_alm, Ibus_ocp_alm, and Vbus_ovp_alm do not exceed the reference value, so as to ensure that the battery can be charged according to the maximum charging parameters.

[0091] Based on the above charging parameter adjustment method, embodiments of the controller, the terminal device, and the computer-readable storage medium of the present application are given below.

[0092] Also, one embodiment of the present application provides a controller, the controller including a memory, a processor, and a computer program stored in the memory and executable by the processor, the computer program being executed by the processor to perform the above-mentioned Charging parameter adjustment method The following will be implemented.

[0093] The processor and memory may be connected via a bus or other means.

[0094] The controller of this embodiment may correspond to the controller in the embodiment shown in FIG. 1, and since both belong to the same concept, both have the same realization principle and beneficial effects, which will not be described in detail here.

[0095] The non-transitory software programs and instructions necessary to realize the detection methods of the above embodiments are stored in a memory, and when executed by a processor, perform the charging parameter adjustment methods of the above embodiments, for example, the method steps of Figures 2 to 10 above.

[0096] The specific embodiments and technical effects of the controller according to the embodiments of the present application may refer to the specific embodiments and technical effects of the charging parameter adjustment method described above.

[0097] Moreover, one embodiment of the present application provides a terminal device including, but not limited to, the above controller.

[0098] The terminal device according to the embodiments of the present application includes the above-mentioned controller, and the above-mentioned controller can execute the above-mentioned charging parameter adjustment method, so that the specific embodiments and technical effects of the terminal device according to the embodiments of the present application may refer to the specific embodiments and technical effects of the above-mentioned charging parameter adjustment method.

[0099] Furthermore, one embodiment of the present application also comprises: When executed by the processor, The above charging parameter adjustment method, for example, the method steps of FIG. 2 to FIG. 10 are performed. current A computer-readable storage medium having stored thereon computer-executable instructions for performing the method of the present invention is provided.

[0100] The embodiment of the present application includes the following steps: First, the controller obtains the current battery internal resistance of the battery and the level increment voltage between the two adjacent output levels. Next, the controller calculates the variation range of the parameter of the electrical signal of the charging assembly at the level increment voltage based on the battery internal resistance and the level increment voltage. After that, the controller obtains the current electrical signal parameter of the charging assembly and the threshold parameter corresponding to the electrical signal parameter. Finally, the controller obtains the target output level of the charger based on the electrical signal parameter, the threshold parameter and the variation range of the parameter, and adjusts the current output level of the charger to the target output level. According to the technical solution of the embodiment of the present application, the battery internal resistance is calculated, and the variation range of the parameter of the charger according to one level, such as the battery voltage and the battery current variation, is calculated from the battery internal resistance, and the number of output levels to be increased or decreased by controlling the charger is calculated from the variation range of the parameter, the current true electrical signal parameter of the battery and the threshold parameter. Therefore, the embodiment of the present application can solve the problem of inaccurate adjustment of the charging parameters of the charger by accurately calculating the battery internal resistance.

[0101] All or a portion of the steps in the methods and systems disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer readable medium, which may include computer storage media (or non-transitory media) and communication media (or transitory media). May The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information (e.g., computer readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and that can be accessed by a computer. Additionally, communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism and may include any information delivery media.

[0102] Although some examples of the present application have been specifically described above, the present application is not limited to the above embodiments. Those skilled in the art may make various equivalent modifications or replacements without departing from the essential spirit of the present application. These various equivalent modifications or replacements are intended to be included within the scope limited by the claims of the present application.

Claims

1. A charging parameter adjustment method applied to a controller, the controller being in communication with a charging assembly, the charging assembly including a battery and a charger for charging the battery, the charger having multiple output levels set thereto; The charging parameter adjustment method includes: Obtaining a current battery internal resistance of the battery and a level increment voltage between two adjacent output levels; obtaining a variation range of a parameter of the electrical signal of the charging assembly at the level increment voltage based on the battery internal resistance and the level increment voltage; obtaining a current electrical signal parameter of the charging assembly and a threshold parameter corresponding to the electrical signal parameter; obtaining a target output level of the charger based on the electrical signal parameter, the threshold parameter, and a variation range of the parameter, and adjusting a current output level of the charger to the target output level.

2. The step of acquiring a current battery internal resistance of the battery includes: obtaining a charging current of the charging assembly while the charger is charging the battery; acquiring a voltage change amount and a current change amount of the battery when the charging current changes from a first preset threshold to a second preset threshold; and calculating a current internal resistance of the battery from the amount of change in voltage and the amount of change in current.

3. The step of acquiring a current battery internal resistance of the battery includes: obtaining a current fluctuation range of a charging current of the charging assembly while the charger is charging the battery; When the current fluctuation range reaches a first preset fluctuation range, acquiring a voltage change amount and a current change amount of the battery within the current fluctuation range; and calculating a current internal resistance of the battery from the amount of change in voltage and the amount of change in current.

4. The step of acquiring a current battery internal resistance of the battery includes: obtaining adjusted charging parameters of the battery while adjusting the output level of the charger; When an absolute value of a difference between the adjusted charging parameters and target charging parameters reaches a preset difference, acquiring a voltage change amount and a current change amount during the adjustment of the battery; and calculating a current internal resistance of the battery from the amount of change in voltage and the amount of change in current.

5. The step of obtaining a variation range of a parameter of the electrical signal of the charging assembly at the level increment voltage based on the battery internal resistance and the level increment voltage includes: obtaining a charging current of the charging assembly; 2. The method of claim 1, further comprising: if the fluctuation range of the charging current within the preset time is smaller than a second preset fluctuation range, obtaining a fluctuation range of a parameter of the electrical signal of the charging assembly at the level increment voltage based on the battery internal resistance and the level increment voltage.

6. obtaining a target output level of the charger based on the electrical signal parameter, the threshold parameter, and a variation range of the parameter, if the threshold parameter is greater than the sum of the electrical signal parameter and the variation range of the parameter, calculating a first difference between the threshold parameter and the electrical signal parameter; calculating a first ratio between the first difference and a variation range of the parameter, and determining a first target level step number to which the charger is to increase in response to the first ratio; 2. The method of claim 1, further comprising: calculating a target output level of the charger from the first target level step number and a current output level of the charger.

7. obtaining a target output level of the charger based on the electrical signal parameter, the threshold parameter, and a variation range of the parameter, 2. The method of claim 1, further comprising the step of: setting the current output level of the charger as the target output level of the charger if the threshold parameter is less than the sum of the electrical signal parameter and the variation range of the parameter and if the threshold parameter is greater than the electrical signal parameter.

8. obtaining a target output level of the charger based on the electrical signal parameter, the threshold parameter, and a variation range of the parameter, if the threshold parameter is less than the electrical signal parameter, calculating a second difference between the electrical signal parameter and the threshold parameter; calculating a second ratio between the second difference and a variation range of the parameter, and determining a second target level step by which the charger is to be lowered in response to the second ratio; 2. The method of claim 1, further comprising: calculating a target output level of the charger from the second target level step number and a current output level of the charger.

9. When the electrical signal includes a plurality of different electrical signals, the target output level includes a plurality of different target levels, and the electrical signals and the target levels correspond one-to-one to each other, obtaining a plurality of different target levels; The method of claim 1 , further comprising the step of: selecting the target level with the lowest step number as the target output level.

10. if the electrical signal is a battery current signal of the battery, the variation range of the parameter corresponds to a variation range of a battery current parameter, the electrical signal parameter corresponds to a current battery current parameter of the battery, and the threshold parameter corresponds to a battery current threshold parameter of the battery; or if the electrical signal is a battery voltage signal of the battery, the variation range of the parameter corresponds to a variation range of a battery voltage parameter, the electrical signal parameter corresponds to a current battery voltage parameter of the battery, and the threshold parameter corresponds to a battery voltage threshold parameter of the battery; or If the electrical signal is a charger output current signal of the charger, the variation range of the parameter corresponds to a variation range of a charger output current parameter, the electrical signal parameter corresponds to a current charger output current parameter of the charger, and the threshold parameter corresponds to a charger output current threshold parameter of the charger; or 2. The method of claim 1, comprising one of: when the electrical signal is a charger output voltage signal of the charger, a variation range of the parameter corresponds to a variation range of a charger output voltage parameter, the electrical signal parameter corresponds to a current charger output voltage parameter of the charger, and the threshold parameter corresponds to a charger output voltage threshold parameter of the charger.

11. A controller including a memory, a processor, and a computer program stored in the memory and executable by the processor, the controller implementing the charging parameter adjustment method according to any one of claims 1 to 10 when the processor executes the computer program.

12. A terminal device comprising the controller according to claim 11.

13. A computer-readable storage medium storing computer-executable instructions for, when executed by a processor, realizing a charging parameter adjustment method according to any one of claims 1 to 10.

Images