Dynamic adjustment method and system of charging current, charging module and storage medium

Abstract

The application discloses a kind of dynamic adjustment method, system of charging current, charging module and storage medium, real-time monitoring is acted on the charging action of charging interface, and first acquisition signal is generated when identifying;Real-time acquisition input voltage at both ends of charging wire;Whether the pressure difference of input voltage is in the preset pressure difference range, if yes, second acquisition signal is generated, otherwise first adjustment signal is generated;Real-time acquisition current charging voltage and / or charging current acting on battery module at current time;Whether the charging voltage at current time is lower than preset charging low voltage and / or the charging current at current time is higher than preset maximum current, if yes, first adjustment signal is generated, otherwise second adjustment signal is generated;Current charging current is adjusted to preset threshold range according to preset amplitude, and battery module is charged with adjusted current, to realize the dynamic adjustment of charging current, ensure the normal progress of charging and prolong the service life of battery.

Description

Technical Field

[0001] This invention relates to the field of charging management technology, and in particular to a method, system, charging module, and storage medium for dynamically adjusting charging current. Background Technology

[0002] Electronic products typically rely on lithium batteries for power, allowing for repeated charging and multiple uses when the battery is depleted. Currently, lithium batteries are usually charged via a charging chip connected to a charging adapter and / or charging cable. However, the market offers a wide variety of charging adapters and cables, resulting in variations in output voltage and internal resistance. This leads to fluctuations in the charging voltage received by the charging chip during lithium battery charging. When the voltage falls below the minimum required by the charging chip, charging will fail, significantly impacting the user experience.

[0003] In addition, fluctuations in the external voltage connected to the charging head also affect the stability of the charging chip. Since current charging chips cannot dynamically adjust the charging current in the circuit, they always charge in a constant voltage or constant current manner, which leads to problems such as damage to the lifespan of lithium batteries. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method, system, charging module and storage medium for dynamic adjustment of charging current, so as to solve the problems of low voltage and failure to charge normally and the damage to the lifespan of lithium batteries caused by charging lithium batteries in a constant voltage or constant current manner in the prior art.

[0005] To achieve the above objectives, a first aspect of the present invention provides a method for dynamically adjusting the charging current, specifically including the following steps:

[0006] Real-time monitoring of charging actions applied to the charging interface, and generation of a first acquisition signal when the charging action is detected;

[0007] In response to the first acquisition signal, the input voltage at both ends of the charging cable is acquired in real time;

[0008] Determine whether the input voltage difference is within the preset voltage difference range. If so, generate a second acquisition signal; otherwise, generate a first adjustment signal.

[0009] In response to the second acquisition signal, the charging voltage and / or charging current acting on the battery module at the current moment are acquired in real time.

[0010] Determine whether the current charging voltage is lower than the preset low charging voltage and / or whether the current charging current is higher than the preset maximum current. If so, generate the first adjustment signal; otherwise, generate a second adjustment signal.

[0011] In response to the first adjustment signal or the second adjustment signal, the charging current at the current moment is adjusted to a preset threshold range according to a preset amplitude, and the battery module is continuously charged with the adjusted current.

[0012] Furthermore, in the step of real-time monitoring of charging actions applied to the charging interface and generating a first acquisition signal upon detecting the charging action, the specific method for identifying the charging action is as follows:

[0013] The charging interface level is collected in real time at various moments. When the level changes from a first level to a second level, the first acquisition signal is generated, wherein the second level is at least higher than the first level by a preset level value.

[0014] Furthermore, after the step of real-time monitoring of charging actions applied to the charging interface and generating a first acquisition signal upon detecting the charging action, the method further includes the following steps:

[0015] In response to the first acquisition signal, the battery voltage at the current moment is acquired;

[0016] The charging mode is determined based on the current battery voltage, and the battery module is charged in the determined charging mode.

[0017] Furthermore, in the step of determining the charging mode based on the current battery voltage and charging the battery module in the determined charging mode, the charging mode includes at least a first low-current charging mode, a second low-current charging mode, a constant-current charging mode, a constant-voltage charging mode, and a cutoff mode.

[0018] Furthermore, in the step of determining whether the input voltage difference is within a preset voltage difference range, if so, generating a second acquisition signal; otherwise, generating a first adjustment signal, the specific method is as follows:

[0019] The system acquires the first input voltage at the charging head interface of the charging cable and the second input voltage at the battery module interface of the charging cable at the current moment. It calculates the voltage difference between the first and second input voltages and determines whether the voltage difference is within a preset voltage difference range. If the voltage difference is within the preset voltage difference range, a second acquisition signal is generated. If the voltage difference is not within the preset voltage difference range, a first adjustment signal is generated.

[0020] Furthermore, in the step of adjusting the charging current at the current moment to a preset threshold range according to a preset amplitude in response to the first adjustment signal or the second adjustment signal, and continuously charging the battery module with the adjusted current, the specific method is as follows:

[0021] In response to the first adjustment signal, the preset charging current of the current charging mode is obtained, and the charging current at the current moment is reduced in a cyclic step according to the first preset ratio of the corresponding preset charging current until the charging voltage at the current moment exceeds the preset low charging voltage, and the battery module is continuously charged with the adjusted current.

[0022] or

[0023] In response to the second adjustment signal, the preset charging current of the current charging mode is obtained, and the charging current at the current moment is increased by cyclic steps according to the second preset ratio of the corresponding preset charging current, and the battery module is continuously charged with the adjusted current.

[0024] A second aspect of the present invention provides a dynamic adjustment system for charging current, comprising:

[0025] The charging action monitoring module is used to monitor the charging action applied to the charging interface in real time, and generate a first acquisition signal when the charging action is detected.

[0026] The first electrical signal acquisition module is used to acquire the input voltage at both ends of the charging cable in real time based on the first acquisition signal;

[0027] The first judgment module is used to determine whether the voltage difference is within a preset voltage difference range based on the input voltage at both ends of the charging cable. If so, a second acquisition signal is generated; otherwise, a first adjustment signal is generated.

[0028] The second electrical signal acquisition module is used to acquire the charging voltage and / or charging current applied to the battery module in real time based on the second acquisition signal.

[0029] The second judgment module is used to determine whether the current charging voltage is lower than a preset low charging voltage and / or whether the current charging current is higher than a preset maximum current. If so, it generates the first adjustment signal; otherwise, it generates a second adjustment signal.

[0030] The current adjustment module is used to adjust the charging current at the current moment to a preset threshold range according to the first adjustment signal or the second adjustment signal, and to continuously charge the battery module with the adjusted current.

[0031] A third aspect of the present invention provides a charging module, comprising:

[0032] The first charging interface is used to connect the input voltage when the charging action occurs;

[0033] A charging chip is used to acquire the current charging voltage and current in real time; and

[0034] The MCU control chip is used to acquire the battery voltage of the battery module, determine the charging mode based on the battery voltage, and control the charging chip to charge the battery module in the determined charging mode. It is also used to dynamically adjust the charging current of the input battery module based on the input voltage, the current charging voltage, and the charging current.

[0035] A fourth aspect of the present invention provides a charging module, comprising:

[0036] The second charging interface is used to connect the input voltage when charging occurs; and

[0037] The charging control module is used to acquire the current charging voltage and current in real time, and dynamically adjust the current of the input battery module according to the input voltage, the current charging voltage and current, and to charge the battery module according to the battery voltage and the corresponding charging mode.

[0038] A fifth aspect of the present invention provides a computer storage medium having an executable computer program stored thereon, wherein the computer program, when executed by a processor, implements the dynamic adjustment method for charging current as described above.

[0039] This invention calculates the voltage difference between the charging interface and the charging line by acquiring the input voltage flowing into the charging interface and the charging module via the charging interface and charging line. The calculated voltage difference, the real-time acquired charging current and charging voltage of the battery module at the current moment are then iteratively compared with corresponding preset values ​​or preset ranges. Based on the comparison results, the charging current at the current moment is cyclically reduced in steps according to a first preset ratio to avoid exceeding the maximum charging current value or falling below the minimum charging voltage value set for the current charging mode. Alternatively, based on the comparison results, the charging current at the current moment is cyclically increased in steps according to a second preset ratio, so that the charging current approaches the set maximum charging current value or the set minimum charging voltage value infinitely from the side less than the set maximum charging current value for the current charging mode, or infinitely approaches the set minimum charging voltage value from the side greater than the set minimum charging voltage value for the current charging mode. This achieves dynamic adjustment of the charging current during the charging process, thereby optimizing charging parameters, completing charging quickly, effectively ensuring charging safety and stability, and extending the battery module's lifespan. Attached Figure Description

[0040] Figure 1 This is a structural block diagram of the charging module according to Embodiment 1 of the present invention.

[0041] Figure 2 This is a structural block diagram of the charging module in Embodiment 2 of the present invention.

[0042] Figure 3 This is a flowchart of the dynamic adjustment method for charging current according to Embodiment 3 of the present invention.

[0043] Figure 4 The equivalent diagram of the internal resistance model of the charging cable.

[0044] Figure 5 This is a system block diagram of the dynamic adjustment system for charging current according to Embodiment 4 of the present invention. Detailed Implementation

[0045] The following detailed description illustrates the specific implementation method:

[0046] Example 1

[0047] In this embodiment, the charging module is built into the atomizing device and connected to the battery module (specifically, a lithium battery) also built into the atomizing device. The charging module charges the battery module and acquires and judges the charging voltage and current during the charging process, dynamically adjusting the charging current to always charge the battery module with optimal charging parameters, ensuring charging stability and protecting battery life. Although this embodiment uses a charging module built into an atomizing device as an example, it should be understood that the charging module in this embodiment is not limited to dynamically adjusting the charging current of the battery module in an atomizing device; it can also be used for other electronic products powered by battery modules.

[0048] like Figure 1 The diagram shown is a structural block diagram of a charging module according to this embodiment. The charging module of this embodiment includes a charging chip 101, a first charging interface 102 electrically connected to the charging chip 101 via a charging cable, and an MCU control chip 103 electrically connected to the charging chip 101. The charging chip 101 can monitor in real time the second input voltage flowing into the first charging interface 102 and the charging cable, as well as the current charging voltage and charging current on the battery module 100 during the charging process. The MCU control chip 103 can monitor the first input voltage flowing into the first charging interface 102 at the initial moment of charging, and make a comprehensive judgment based on the first and second input voltages and the current charging voltage and charging current, dynamically adjusting the current charging current to ensure the stability of charging the battery module 100 and prevent damage to the battery module 100 during charging.

[0049] The first charging interface 102 is formed at one end of the charging cable and connected to the interface on the charging head or power strip to receive a first input voltage when charging occurs. This first input voltage is the voltage received at the first charging interface 102 when the charging module begins charging. Since the input current is zero at this time, a relatively accurate first input voltage can be detected. The other end of the charging cable has a third charging interface connected to the charging port on the atomizing device. The first input current flows sequentially through the first charging interface 102 and the charging cable, and a second input voltage is formed due to voltage loss on the charging cable. The third charging interface inputs the second input voltage to the charging chip 101 via the charging interface on the atomizing device, thus establishing an electrical connection between the first charging interface 102 and the charging chip 101. In this embodiment, the first charging interface 102 is either a micro USB interface or a type-C interface, and the third charging interface is either a type-C interface, a USB-C interface, or a Lightning interface. Understandably, in some other embodiments, the first charging interface 102 and the second charging interface may also be other types of interfaces, as long as they can enable the first input voltage to be connected to the charging chip 101.

[0050] The charging chip 101 is connected to the MCU control chip 103, the battery module 100, and the third charging interface. It can collect the second input voltage flowing into the battery module 100 through the third charging interface in real time, as well as the charging voltage and charging current at the current moment. Under the control of the MCU control chip 103, it can reduce or increase the charging current at the current moment according to a first preset ratio or a second preset ratio to achieve dynamic adjustment of the charging current, thereby charging the battery module 100.

[0051] The MCU control chip 103 can identify the charging action acting on the first charging interface 102. When the charging action is identified, it collects the first input voltage input to the first charging interface 102, and at the same time controls the charging chip 101 to collect the second input voltage, the charging voltage at the current moment and the charging current. On the one hand, the MCU control chip 103 can calculate the voltage loss on the charging line based on the first input voltage and the second input voltage, thereby obtaining the real-time voltage difference between the first input voltage and the second input voltage. By comparing this real-time voltage difference with a pre-stored preset voltage difference range, and judging whether the charging current input to the charging module is too large or too small based on the comparison result, the MCU control chip 101 is controlled to reduce or increase the charging current at the current moment. On the other hand, the MCU control chip 103 can also compare the current charging voltage and charging current with the pre-stored preset low charging voltage and preset maximum current, respectively, and judge whether the current input to the charging module is too large or too small based on the comparison result, thereby controlling the charging chip 101 to reduce or increase the charging current at the current moment. This achieves dynamic adjustment of the charging current, thereby ensuring that the battery module 100 is charged normally while charging with the optimal charging current.

[0052] In this embodiment, when the first charging interface 102 is connected to an external power source, the MCU control chip 103 can detect a level transition on the first charging interface 102. By monitoring the level transition, it can determine whether the charging action has occurred. Specifically, the MCU control chip 103 can continuously scan the level on the first charging interface 102 at various times. When, at two adjacent moments before and after, the level on the first charging interface 102 transitions from a first level (low level, such as 0V in this embodiment) to a second level (high level, such as 4V or higher in this embodiment) that is higher than the first level by a preset level value (4V in this embodiment), it is identified as the charging action having occurred.

[0053] In a preferred embodiment, the MCU control chip 103 is also connected to the battery module 100 to collect the current battery voltage of the battery module 100, determine the charging mode based on the collected battery voltage, and control the charging chip 101 to charge the battery module 100 in the determined charging mode. In this embodiment, the charging mode, depending on the battery voltage, includes at least a first low-current charging mode, a second low-current charging mode, a constant-current charging mode, a constant-voltage charging mode, and a cutoff mode.

[0054] When the battery voltage is 0 to 0.7V, the charging module operates in the first low-current charging mode. In this charging mode, the charging module charges the battery module 100 with a first constant low current with a maximum charging current of 22mA. During this process, the charging current increases stepwise from the first initial current value to 22mA according to the first ratio. If the charging current is increased by 5% of the initial current value of 10mA, after the first step, the charging current is 10mA + 10 * 5% mA = 10(1 + 5%) mA. After the second step, the charging current is (10mA + 10mA * 5%) + (10mA + 10mA * 5%) * 5% = 10(1 + 5%)2mA. And so on, the charging current is 10(1 + 5%)nmA after each step (where n is the number of steps the charging current increases). When the charging current reaches the maximum value of 22mA, the battery module 100 is continuously charged at 22mA until the battery voltage reaches 0.7V.

[0055] When the battery voltage is between 0.7 and 2.8V, the charging module operates in a second low-current charging mode. In this mode, the charging module charges the battery module 100 with a second constant low current, with a maximum charging current of 85mA. During this process, the charging current increases in steps from a second initial current value to 85mA according to a second ratio. In this embodiment, the second initial current value is the charging current at the end of the first low-current charging mode, and its value is less than or equal to 22mA. The second ratio may be the same as or different from the first ratio. The process of increasing the charging current in the second low-current charging mode refers to that in the first low-current charging mode. After the charging current reaches its maximum value of 85mA, the battery module 100 is continuously charged at 85mA until the battery voltage reaches 2.8V. The specific process is not described in detail here.

[0056] When the battery voltage is between 2.8 and 4.1V, the charging module operates in constant current charging mode. In this charging mode, the charging module charges the battery module 100 with a constant current of 1032mA at its maximum value. During this process, the charging current increases in steps from a third initial current value to 1032mA according to a third ratio. In this embodiment, the third initial current value is the charging current at the end of the second low-current charging mode, and its value is less than or equal to 85mA. The third ratio may be the same as or different from the first ratio and / or the second ratio. The current step increase process of the constant current charging mode refers to the first low-current charging mode or the second low-current charging mode. After the charging current reaches its maximum value of 1032mA, the battery module 100 is continuously charged at 1032mA until the battery voltage reaches 4.1V. The specific process is not described in detail here.

[0057] When the battery voltage is 4.1 to 4.2V, the charging module operates in constant voltage charging mode. In this charging mode, the charging module charges the battery module 100 with a constant charging voltage of 4.2V. During this process, since the charging voltage remains constant, as charging continues, the battery voltage increases continuously, and the voltage difference between the battery and the charging voltage decreases continuously, resulting in a smaller and smaller charging current (during this process, the charging current varies between 710mA and 750mA) until the battery voltage reaches 4.2V.

[0058] When the battery voltage is 4.3V, the charging module operates in the off mode. At this time, the battery module 100 is fully charged. When the charging module is disconnected, the charging current is 0.

[0059] In the initial stage of charging the battery module 100 (in the first low-current charging mode and the second low-current charging mode), because the battery voltage of the battery module 100 is relatively low, a charging current with a maximum value not exceeding the first and second constant low currents is used to charge the battery module 100, thereby reducing damage to the battery module 100. Furthermore, when the battery voltage reaches a certain value (i.e., when entering constant current charging mode), the charging current increases to improve the charging speed. Throughout the entire process, the charging current increases gradually according to a corresponding step ratio, avoiding large changes in the charging current caused by fluctuations in the charging voltage, further reducing damage to the battery module 100.

[0060] Of course, the embodiments listed above are only preferred embodiments for charging the battery module 100 of the atomizing device in this embodiment, and are not intended to limit the scope of protection of this embodiment. It is understood that in other embodiments, the battery voltage threshold and the maximum charging current of the charging module entering the corresponding charging mode may be different from the values ​​listed above.

[0061] The charging module in this embodiment uses an independent charging chip 101 and an MCU control chip 103 to collect charging voltage, charging current, input voltage, and battery voltage during the charging process. The MCU control chip 103 comprehensively judges the charging voltage, charging current, input voltage, and battery voltage to determine the charging mode. This allows for dynamic adjustment of the charging current at the current moment based on the maximum charging current or a constant voltage value under each charging mode, optimizing charging parameters and effectively ensuring charging safety and stability while extending the lifespan of the battery module 100. Furthermore, by using independent charging chip 101 and MCU control chip 103 within the atomizing device, the two chips operate independently without interference. Individual optimization of one chip is possible, or replacement of a damaged chip is possible, reducing maintenance costs.

[0062] Example 2

[0063] like Figure 2 The diagram shown is a structural block diagram of the charging module in this embodiment. The charging module in this embodiment includes a second charging interface 201 with the same or similar structure and function as the first charging interface 102 in Embodiment 1, which is used to identify charging actions and connect an input voltage when a charging action is identified.

[0064] This embodiment also includes a charging control module 202, which integrates a charging logic unit 202A and a main control unit 202B. In this embodiment, the structure and function of the charging logic unit 202A are the same as or similar to those of the charging chip in Embodiment 1, and the structure and function of the main control unit 202B are the same as or similar to those of the MCU control chip 103 in Embodiment 1. The charging logic unit 202A can monitor in real time the second input voltage flowing into the second charging interface 201 and the charging cable, as well as the current charging voltage and charging current on the battery module 100 during the charging process. The main control unit 202B can monitor the first input voltage flowing into the second charging interface 201 at the initial moment of charging, and make a comprehensive judgment based on the first input voltage, the second input voltage, and the current charging voltage and charging current to dynamically adjust the current charging current to ensure the stability of charging the battery module 100 and avoid damage to the battery module 100 during the charging process. For a detailed description of the second charging interface 201, the charging logic unit 202A, and the main control unit 202B in this embodiment, please refer to the relevant description of the first charging interface, the charging chip, and the MCU control chip 103 in Embodiment 1. This embodiment will not repeat the description.

[0065] The charging module in this embodiment integrates a charging control module 202 with data acquisition, logic judgment, and control functions. The charging logic unit 202A and main control unit 202B integrated on the charging control module 202 collect and comprehensively judge the charging voltage, charging current, input voltage, and battery voltage during the charging process to determine the charging mode. This allows for dynamic adjustment of the charging current at the current moment based on the maximum charging current or a constant voltage value under each charging mode, optimizing charging parameters and effectively ensuring charging safety and stability while extending the lifespan of the battery module 100. Furthermore, the integration of the charging logic unit 202A and main control unit 202B into a single module in this embodiment helps reduce the overall size of the atomizing device, thus facilitating its miniaturization.

[0066] Example 3

[0067] like Figure 3The diagram shown is a flowchart of a dynamic adjustment method for charging current according to this embodiment. This dynamic adjustment method for charging current is implemented based on the charging module of Embodiment 1 or Embodiment 2 to dynamically adjust the charging current during the charging process. The following description uses the charging module of Embodiment 1 as an example to illustrate the method of this embodiment, which includes the following steps:

[0068] S301: Monitors charging activity and generates the first acquisition signal.

[0069] Specifically, the charging action on the charging interface 31 is monitored in real time, and a first acquisition signal is generated when the charging action is detected. Then, steps S302 and S303 are executed respectively. In this embodiment, when an external power source is connected to the charging interface 31, a level change can be detected on the charging interface 31. By collecting the level on the charging interface 31 at various times in real time, when the level changes from a first level to a second level (and the second level is at least higher than the first level by a preset level value), it can be determined whether the charging action has occurred.

[0070] In this embodiment, the MCU control chip 103 scans the voltage levels on the charging interface 31 at various times. When the current time is a first voltage level and the next time is a second voltage level, and the second voltage level is higher than the first voltage level by a preset value, the charging action is detected, and a first acquisition signal is generated. For example, if the MCU control chip 103 detects a low voltage level (e.g., 0V) on the charging interface 31 at time t, and a high voltage level (e.g., 4V or higher) on the charging interface 31 at time t+1, the charging action occurs. During detection, the second voltage level is higher than the first voltage level by a preset value (4V in this embodiment). This avoids the MCU control chip 103 misidentifying the charging action due to voltage fluctuations on the charging interface 31 caused by environmental factors, thereby preventing the charging module from being accidentally started and causing the battery module 100 to frequently connect or disconnect from the power supply, which helps reduce battery wear.

[0071] S302: Obtain the input voltage and battery voltage based on the first acquisition signal.

[0072] In response to the first acquisition signal, the battery voltage of the battery module 100 and the input voltage at both ends of the charging cable 32 are acquired synchronously or sequentially. Specifically, the MCU control chip 103 acquires the battery voltage on the battery module 100 and the first input voltage of the input charging interface 31 and the second input voltage flowing through the charging interface 31 and the charging cable 32 and into the charging chip 101.

[0073] S303: Determines the charging mode and charges based on the battery voltage.

[0074] The charging mode of the charging module is determined based on the current battery voltage, and the battery module 100 is charged in the determined charging mode. In this way, the battery module 100 is charged in stages in a suitable charging mode, thereby further reducing the wear and tear on the battery module 100.

[0075] In this embodiment, the charging modes include at least a first low-current charging mode, a second low-current charging mode, a constant-current charging mode, a constant-voltage charging mode, and a cutoff mode. When the charging module operates in the first low-current charging mode, the second low-current charging mode, and the constant-current charging mode, in the initial stage of charging in each charging mode, the charging current gradually increases in a corresponding step ratio until it reaches the maximum charging current set in that mode, after which constant-current charging is performed at the corresponding maximum charging current. When the charging module operates in the constant-voltage charging mode, the charging current gradually decreases until the charging current is less than a certain value, at which point the battery module 100 is considered to be fully charged.

[0076] S304: Determine whether the differential pressure is within the preset differential pressure range.

[0077] like Figure 4 The diagram shown is an equivalent model of the internal resistance of the charging cable 32. When the first input voltage is input to the charging chip 101 via the charging interface 31 and the charging cable 32, voltage loss will occur on the charging cable 32 due to its internal resistance. This results in a voltage difference between the second input voltage detected on the charging chip 101 (i.e., the voltage that can actually be input into the battery module 100) and the first input voltage. This voltage difference is related to the internal resistance of the charging cable 32 and the input current. Since the internal resistance of the charging cable 32 is constant, the larger the current, the greater the voltage loss and the greater the voltage difference. If the voltage difference is large enough, the second input voltage input to the charging chip 101 will be lower than the preset low charging voltage, which will prevent the battery module 100 from being charged normally. Therefore, it is necessary to first determine the magnitude of the voltage difference to ensure that the charging module can charge the battery module 100 normally.

[0078] Specifically, the system acquires in real time the first input voltage at the charging head interface of the charging cable 32 and the second input voltage at the current moment at the battery module 100 interface of the charging cable 32. Based on the first and second input voltages, it calculates the voltage difference between the charging interface 31 and the charging cable 32. Then, it determines whether the voltage difference is within a preset voltage difference range. If the voltage difference is within the preset range, it indicates that the voltage of the battery module 100 is sufficient to maintain normal charging of the battery module 100 by the charging module. A second acquisition signal is then generated, and step S305 is executed. If the voltage difference is not within the preset range, it indicates that the voltage of the battery module 100 is too low to maintain normal charging of the battery module 100 by the charging module. The charging current needs to be adjusted to reduce the voltage difference between the first and second input voltages, making the voltage of the battery module 100 higher than the preset low charging voltage. Therefore, a first adjustment signal is generated, and step S307 is executed.

[0079] S305: Obtain the charging voltage and / or charging current at the current moment based on the second acquisition signal.

[0080] Specifically, in response to the second acquisition signal, the charging chip 101 acquires the charging voltage and / or charging current on the battery module 100 in real time, wherein the charging voltage and / or charging current are the actual charging voltage and / or charging current acting on the battery module 100.

[0081] S306: Determine whether the charging voltage and / or charging current meet the conditions.

[0082] Fluctuations in external power supply or environmental factors (such as temperature) can directly or indirectly cause changes in the charging voltage or equivalent resistance in the charging circuit, leading to changes in the charging current and affecting the normal charging of the battery module 100 by the charging module. To avoid the influence of fluctuations in external power supply or environmental factors (such as temperature), it is necessary to monitor the charging voltage and / or charging current in real time to adjust the charging current accordingly.

[0083] Specifically, the system determines whether the current charging voltage is lower than a preset low charging voltage and / or whether the current charging current is higher than a preset maximum current. If the current charging voltage is lower than the preset low charging voltage and / or the current charging current is higher than the preset maximum current, the first adjustment signal is generated. If the current charging voltage is higher than the preset low charging voltage and the current charging current is lower than the preset maximum current, the second adjustment signal is generated.

[0084] In this embodiment, the preset low charging voltage and preset maximum current can be a range close to the low charging voltage and maximum current. When the value of the charging voltage or charging current is within this range, it is considered that the charging voltage is lower than the preset low charging voltage or the charging current is higher than the preset maximum current. This can avoid the battery module 100 from being damaged when the charging voltage is lower than the actual preset low charging voltage or when the charging current is higher than the preset maximum current.

[0085] S307: Dynamically adjusts the charging current.

[0086] In response to the first adjustment signal or the second adjustment signal, the charging current at the current moment is adjusted to a preset threshold range according to a preset amplitude, and the battery module 100 is continuously charged with the adjusted current.

[0087] Specifically, when it is necessary to reduce the charging current, in response to the first adjustment signal, firstly, a preset charging current for the current charging mode is obtained, wherein the preset charging current is the initial current value of the corresponding charging mode or the charging current at the current moment. Then, the charging current at the current moment is reduced in a cyclical step according to a first preset ratio corresponding to the preset charging current, until the charging voltage at the current moment exceeds a preset low charging voltage (i.e., greater than the maximum value of the preset low charging voltage). Finally, the battery module 100 is continuously charged with the adjusted current.

[0088] When an increase in charging current is required, in response to a second adjustment signal, firstly, a preset charging current for the current charging mode is acquired. This preset charging current is either the initial current value in the corresponding charging mode or the charging current at the current moment. Then, the charging current at the current moment is increased in cyclic steps according to a second preset ratio corresponding to the preset charging current, until the charging current approaches the maximum charging current value in the current charging mode while the charging voltage remains higher than the preset low charging voltage. Finally, the battery module 100 is continuously charged with the adjusted current, achieving dynamic adjustment of the charging current.

[0089] The dynamic adjustment method for charging current in this embodiment obtains the first input voltage and the second input voltage at both ends of the charging cable 32 and calculates the voltage difference between them, as well as obtains the charging voltage and / or charging current at the current moment. By comprehensively judging the calculated voltage difference and the obtained charging voltage and / or charging current, the charging current in the circuit is dynamically adjusted, thereby optimizing the charging parameters, completing the charging quickly, and effectively ensuring charging safety and stability as well as extending the service life of the battery module 100.

[0090] Example 4

[0091] like Figure 5The diagram shown is a control block diagram of a dynamic charging current adjustment system according to this embodiment. This dynamic charging current adjustment system is used to implement the dynamic charging current adjustment method of Embodiment 3. Specifically, this embodiment includes a charging action monitoring module 401, a first electrical signal acquisition module 402, a first judgment module 403, a second electrical signal acquisition module 404, a second judgment module 405, and a current adjustment module 406. Wherein:

[0092] The charging action monitoring module 401 monitors the charging action applied to the charging interface in real time and generates a first acquisition signal when the charging action is detected. In this embodiment, when an external power source is connected to the charging interface, a level change can be detected on the charging interface. By collecting the level on the charging interface at various times in real time, when the level changes from a first level to a second level (and the second level is at least higher than the first level by a preset level value), it can be determined whether the charging action has occurred.

[0093] The first electrical signal acquisition module 402 acquires the battery voltage of the battery module at the current moment, the first input voltage of the input charging interface, and the second input voltage flowing through the charging interface and the charging cable and into the charging chip, based on the first acquisition signal generated by the charging action monitoring module 401.

[0094] The first judgment module 403 calculates the voltage difference between the charging interface and the charging line based on the first input voltage and the second input voltage obtained by the first electrical signal acquisition module 402, and then determines whether the voltage difference is within a preset voltage difference range. If the voltage difference is within the preset voltage difference range, a second acquisition signal is generated; if the voltage difference is not within the preset voltage difference range, a first adjustment signal is generated.

[0095] The second electrical signal acquisition module 404 acquires the charging voltage and / or charging current on the battery module in real time according to the second acquisition signal. The charging voltage and / or charging current are the actual charging voltage and / or charging current acting on the battery module.

[0096] The second judgment module 405 determines whether the current charging voltage is lower than the preset low charging voltage and / or the current charging current is higher than the preset maximum current based on the charging voltage and / or charging current obtained by the second electrical signal acquisition module 404. If so, the first adjustment signal is generated; otherwise, a second adjustment signal is generated.

[0097] The current adjustment module 406 obtains the preset charging current of the current charging mode according to the first adjustment signal generated by the first judgment module 403 or the second judgment module 405, and performs cyclic steps according to the first preset ratio of the corresponding preset charging current to reduce the charging current at the current moment until the charging voltage at the current moment exceeds the preset low charging voltage, and continuously charges the battery module with the adjusted current; and according to the second adjustment signal generated by the second judgment module 405, obtains the preset charging current of the current charging mode, and performs cyclic steps according to the second preset ratio of the corresponding preset charging current to increase the charging current at the current moment until the charging current is infinitely close to the maximum charging current of the current charging mode while the charging voltage is always higher than the preset low charging voltage, and continuously charges the battery module with the adjusted current, thereby realizing dynamic adjustment of the charging current.

[0098] The dynamic adjustment system for charging current in this embodiment acquires the first and second input voltages at both ends of the charging cable, as well as the charging voltage and charging current acting on the battery module, through a first acquisition module and a second acquisition module. A first judgment module 403 determines whether and how to adjust the charging current based on the first and second input voltages, and a second judgment module 405 determines whether and how to adjust the charging current based on the charging voltage and / or charging current. Finally, a current adjustment module 406 dynamically adjusts the charging current based on the judgment results of the first and second judgment modules 403 and 405 to ensure normal charging.

[0099] As another embodiment of the present invention, a computer storage medium is also provided, the computer storage medium storing computer-executable instructions, which, when called and executed by a processor, cause the processor to implement the dynamic adjustment method of charging current as described in Embodiment 3.

Claims

1. A method for dynamically adjusting charging current, characterized in that, Includes the following steps: Real-time monitoring of charging actions applied to the charging interface, and generation of a first acquisition signal when the charging action is detected; In response to the first acquisition signal, the input voltage at both ends of the charging cable and the current battery voltage are acquired in real time; the charging mode is determined based on the current battery voltage, and the battery module is charged in the determined charging mode; Determine whether the input voltage difference is within the preset voltage difference range. If so, generate a second acquisition signal; otherwise, generate a first adjustment signal. In response to the second acquisition signal, the charging voltage and / or charging current acting on the battery module at the current moment are acquired in real time. Determine whether the current charging voltage is lower than the preset low charging voltage and / or whether the current charging current is higher than the preset maximum current. If so, generate the first adjustment signal; otherwise, generate a second adjustment signal. In response to the first adjustment signal or the second adjustment signal, the charging current at the current moment is adjusted to a preset threshold range according to a preset amplitude, and the battery module is continuously charged with the adjusted current; wherein, in response to the first adjustment signal, the preset charging current of the current charging mode is obtained, and the charging current at the current moment is reduced in a cyclic step according to a first preset ratio of the corresponding preset charging current until the charging voltage at the current moment exceeds the preset low charging voltage, and the battery module is continuously charged with the adjusted current; or In response to the second adjustment signal, the preset charging current of the current charging mode is obtained, and the charging current at the current moment is increased by cyclic steps according to the second preset ratio of the corresponding preset charging current, and the battery module is continuously charged with the adjusted current.

2. The method for dynamically adjusting the charging current according to claim 1, characterized in that, In the step of real-time monitoring of charging actions applied to the charging interface and generating a first acquisition signal upon detection of the charging action, the specific method for identifying the charging action is as follows: The charging interface level is collected in real time at various moments. When the level changes from a first level to a second level, the first acquisition signal is generated, wherein the second level is at least higher than the first level by a preset level value.

3. The method for dynamically adjusting the charging current according to claim 1, characterized in that, In the step of determining the charging mode based on the current battery voltage and charging the battery module in the determined charging mode, the charging mode includes at least a first low-current charging mode, a second low-current charging mode, a constant current charging mode, a constant voltage charging mode, and a cutoff mode.

4. The method for dynamically adjusting the charging current according to claim 1, characterized in that, In the step of determining whether the input voltage difference is within a preset voltage difference range, if so, generating a second acquisition signal; otherwise, generating a first adjustment signal, the specific method is as follows: The system acquires the first input voltage at the charging head interface of the charging cable and the second input voltage at the battery module interface of the charging cable at the current moment. It calculates the voltage difference between the first and second input voltages and determines whether the voltage difference is within a preset voltage difference range. If the voltage difference is within the preset voltage difference range, a second acquisition signal is generated. If the voltage difference is not within the preset voltage difference range, a first adjustment signal is generated.

5. A dynamic adjustment system for charging current, comprising dynamically adjusting the charging current using the method described in any one of claims 1 to 4, characterized in that, include: The charging action monitoring module is used to monitor the charging action applied to the charging interface in real time, and generate a first acquisition signal when the charging action is detected. The first electrical signal acquisition module is used to acquire the input voltage at both ends of the charging cable in real time based on the first acquisition signal; The first judgment module is used to determine whether the voltage difference is within a preset voltage difference range based on the input voltage at both ends of the charging cable. If so, a second acquisition signal is generated; otherwise, a first adjustment signal is generated. The second electrical signal acquisition module is used to acquire the charging voltage and / or charging current applied to the battery module in real time based on the second acquisition signal. The second judgment module is used to determine whether the current charging voltage is lower than the preset low charging voltage and / or whether the current charging current is higher than the preset maximum current. If so, the first adjustment signal is generated; otherwise, a second adjustment signal is generated. as well as The current adjustment module is used to adjust the charging current at the current moment to a preset threshold range according to the first adjustment signal or the second adjustment signal, and to continuously charge the battery module with the adjusted current.

6. A charging module, characterized in that, include: The first charging interface is used to connect the input voltage when the charging action occurs; The charging chip is used to obtain the charging voltage and charging current at the current moment in real time. as well as An MCU control chip is configured to perform the method of any one of claims 1 to 4 to dynamically adjust the charging current, for obtaining the battery voltage of the battery module, determining the charging mode according to the battery voltage and controlling the charging chip to charge the battery module in the determined charging mode, and for comprehensively judging and controlling the charging chip to dynamically adjust the charging current of the input battery module according to the input voltage, the charging voltage at the current moment and the charging current.

7. A charging module, characterized in that, include: The second charging interface is used to connect the input voltage when the charging action occurs; as well as A charging control module is used to acquire the charging voltage and charging current at the current moment in real time, and to dynamically adjust the current of the input battery module based on the input voltage, the charging voltage and charging current at the current moment in any one of claims 1 to 4, and to charge the battery module according to the battery voltage of the battery module in a corresponding charging mode.

8. A computer storage medium having an executable computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the dynamic adjustment method of charging current as described in any one of claims 1 to 4.

Images