Charging control method and charging device

Abstract

To provide a charging control method and charging device that maximize battery protection. [Solution] The method involves obtaining the maximum charging power through a protocol handshake with the target device, determining the target power supply mode of the target device, and, if the target power supply mode is the first protection mode, charging the target device using the first charging power and the second charging power alternately. Here, the first charging power is less than or equal to the maximum charging power, and the second charging power is less than the first charging power. By providing a charging mode that alternates between high and low power, the user can select the charging mode in specific usage scenarios, thereby meeting the need for battery protection.

Description

[Technical Field]

[0001] The present invention belongs to the technical field of charge control, and more particularly relates to a charge control method and a charge device. [Background technology]

[0002] Currently, consumer electronic devices such as smartphones, tablets, and laptops are typically powered by lithium batteries. To meet users' demand for fast charging, various charging protocols have been developed, including the USB Power Delivery (USB PD) protocol developed by the USB Implementers Forum (USB-IF), and other protocols developed by other manufacturers, such as the Quick Charge (QC) protocol and the Pump Express (PE) protocol. These protocols aim to improve charging power, reduce charging time, and enhance the user experience by increasing charging voltage and current.

[0003] Currently, the USB PD protocol has evolved to version 3.1, with a maximum allowable charging power of 240W (48V / 5A). This represents a significant improvement compared to the 5V / 1.5A specified in BC 1.2. However, high-power fast charging presents challenges. Specifically, lithium batteries can generate excessive heat during charging, which accelerates battery degradation and shortens their lifespan. This can also lead to waste of raw materials and negative environmental impacts.

[0004] To address this challenge, many manufacturers have adopted a compromise when designing their charging systems. Specifically, this involves fast charging at maximum power during the protocol handshake when the battery level is low, and then gradually reducing the charging voltage and current once the battery level reaches a certain level. While this method can suppress battery heat to some extent, it cannot completely prevent unnecessary temperature increases caused by continuous high power in the initial stages, making it difficult to achieve maximum battery protection.

[0005] The present invention provides a charging control method and a charging device for solving, or at least partially solving, the above-mentioned problems, and includes the following:

[0006] Charging control method The charging control method includes the following:

[0007] The maximum charging power is obtained through a protocol handshake with the target device, and the target power supply mode for that device is determined.

[0008] When the target power supply mode is the first protection mode, the target device is charged alternately using the first charging power and the second charging power; where the first charging power is less than or equal to the maximum charging power, and the second charging power is less than the first charging power.

[0009] Preferably, the charging control method further includes:

[0010] If the target power supply mode is the default charging mode, the device will be continuously charged using the maximum charging power.

[0011] If the target power supply mode is the second protection mode, the target device is continuously charged using the third charging power; where the third charging power is less than the maximum charging power.

[0012] Preferably, the initial value of the target power supply mode is the default charging mode; the step of determining the target power supply mode for the target device includes the following:

[0013] When a first selection command is received, set the target power supply mode to the first protection mode;

[0014] When a second selection command is received, set the target power supply mode to the second protection mode;

[0015] When a first cancellation command for the first selection command is received, set the target power supply mode to the default charging mode;

[0016] When a second cancellation command for the second selection command is received, set the target power supply mode to the default charging mode.

[0017] Preferably, the step of determining the target power supply mode for the target device includes the following:

[0018] When charging the target device, obtain the interface output power of the connector and record the duration during which the interface output power within the preset time is below the minimum output power;

[0019] When the duration is equal to the preset time, set the target power supply mode to the default power supply mode.

[0020] Preferably, the method further includes the following:

[0021] When the target power supply mode is the default charging mode, perform the first interactive feedback;

[0022] When the target power supply mode is the first protection mode, perform the second interactive feedback;

[0023] When the target power supply mode is the second protection mode, perform the third interactive feedback.

[0024] Charging device The charging device includes the following: a charging protocol controller, a buck-boost regulator, and a connector;

[0025] The buck-boost regulator is connected to the input power supply, the charging protocol controller, and the connector respectively, and under the control of the charging protocol controller, adjusts the voltage and current of the input power supply and outputs it to the target device via the connector;

[0026] The charging protocol controller is connected to the target device via the connector, obtains the maximum charging power through protocol handshake with the target device through the connector, and determines the target power supply mode for the target device;

[0027] When the target power supply mode is the first protection mode, the charging protocol controller controls the buck-boost regulator to charge the target device alternately using the first charging power and the second charging power; here, the first charging power is not more than the maximum charging power, and the second charging power is smaller than the first charging power.

[0028] Preferably, when the target power supply mode is the default charging mode, the charging protocol controller controls the buck-boost regulator to continuously charge the target device using the maximum charging power;

[0029] When the target power supply mode is the second protection mode, the charging protocol controller controls the buck-boost regulator to continuously charge the target device using the third charging power; here, the third charging power is smaller than the maximum charging power.

[0030] Preferably, the initial value of the target power supply mode is the default charging mode; the charging device further includes an interaction device and a microprocessor; the microprocessor is connected to the interaction device and the charging protocol controller respectively;

[0031] When the microprocessor receives a first selection command from the interaction device, it sends a first protection notification to the charging protocol controller, and the charging protocol controller sets the target power supply mode to the first protection mode;

[0032] When the microprocessor receives a second selection command from the interaction device, it sends a second protection notification to the charging protocol controller, which then sets the target power supply mode to the second protection mode.

[0033] When the interaction device receives a first release command in response to a first selection command, the microprocessor sends a first release notification to the charging protocol controller, and the charging protocol controller sets the target power supply mode to the default charging mode;

[0034] When the interaction device receives a second release command in response to a second selection command, the microprocessor sends a second release notification to the charging protocol controller, and the charging protocol controller sets the target power supply mode to the default charging mode.

[0035] Preferably, when charging the target device, the charging protocol controller acquires the interface output power of the connector and transmits it to the microprocessor, and the microprocessor records the duration during which the interface output power is less than or equal to the minimum output power within a preset time;

[0036] If the duration is equal to the preset time, the microprocessor sends a default power supply notification to the charging protocol controller, and the charging protocol controller sets the target power supply mode to the default power supply mode.

[0037] Preferably, the charging device further includes an interaction feedback device; the microprocessor is connected to the interaction feedback device;

[0038] If the target power supply mode is the default charging mode, the microprocessor controls the interaction feedback device to provide first interactive feedback;

[0039] If the target power supply mode is the first protection mode, the microprocessor controls the interaction feedback device to provide a second interactive feedback;

[0040] If the target power supply mode is the second protection mode, the microprocessor controls the interaction feedback device to perform a third interactive feedback.

[0041] The advantages of this application are as follows:

[0042] In response to the problem that conventional charging methods cannot provide maximum battery protection, this application provides a solution that enables charging a device using alternating high and low power. Specifically, the maximum charging power is obtained through a protocol handshake with the target device, and a target power supply mode for the target device is determined; if the target power supply mode is a first protection mode, the target device is charged using a first charging power and a second charging power alternately; where the first charging power is less than or equal to the maximum charging power, and the second charging power is less than the first charging power.

[0043] By providing charging modes that alternate between high and low power, users can select the appropriate charging mode for specific usage scenarios and meet their battery protection requirements. [Brief explanation of the drawing]

[0044] To more clearly illustrate the technical solutions of this application, the drawings necessary for the description of this application are briefly presented below. As is evident, the following drawings represent only a limited number of embodiments of this application, and it is possible for a person of ordinary skill in the art to obtain other drawings based on these without any creative effort.

[0045] [Figure 1] This is a step flow diagram of the first part of a charging control method in one embodiment of the present application;

[0046] [Figure 2] (This is a step flowchart of the second part of the charging control method in one embodiment of the present application;

[0047] [Figure 3] This is a structural block diagram of a charging device in one embodiment of the present application;

[0048] [Figure 4] This is the first flowchart of the charging control method in a specific implementation of this application;

[0049] [Figure 5] This is a second flowchart of the charging control method in a specific implementation of this application.

[0050] The reference numbers for the drawings in this specification are as follows:

[0051] 01: Charging protocol controller, 02: Step-up / step-down regulator, 03: Connector, 04: Interactive device, 05: Microprocessor, 06: Interactive feedback device. Detailed implementation method.

[0052] To make the purpose, features, and advantages of this application clearer and easier to understand, the application will be described in more detail below, with a combination of drawings and specific embodiments. Clearly, the embodiments described are only a selection of embodiments of this application and do not encompass all embodiments. All other embodiments that can be obtained by a person of the ordinary skill of the art based on the embodiments of this application without creative effort are also included in the scope of protection of this application.

[0053] In analyzing prior art, the inventors discovered that when users typically charge their devices overnight, sufficient charging time is available, making fast charging functionality not necessarily required. However, conventional charging devices automatically select the maximum supported power during the charging protocol handshake, lacking the flexibility for users to choose the appropriate charging power themselves. Therefore, it is considered a rational and effective strategy to enable continuous low power or intermittent high power charging when there is ample time, such as at night, in order to suppress temperature rise and extend battery life.

[0054] In any embodiment of this application, the method and apparatus are applied to charging or supplying power to a target device, the target device being provided with a battery component for storing and supplying power. The battery component includes at least one of a lithium-ion battery, a nickel-metal hydride battery, and a nickel-cadmium battery, and is preferably a lithium-ion battery.

[0055] Referring to Figure 1, one embodiment of this application provides a charging control method including the following:

[0056] S110: Obtain the maximum charging power through a protocol handshake with the target device and determine the target power supply mode for the target device.

[0057] S120: If the target supply mode is the first protection mode, the target device is charged alternately using the first charging power and the second charging power; where the first charging power is less than or equal to the maximum charging power, and the second charging power is less than the first charging power.

[0058] By providing a charging method that alternates between high and low power to charge the device, users can select this charging mode in specific usage scenarios to meet their battery protection needs.

[0059] The charging control method in this embodiment will be described further below.

[0060] As described in step S110, the maximum charging power is obtained through a protocol handshake with the target device, and the target power supply mode for the target device is determined.

[0061] Specifically, the charging protocol supported by the target device (e.g., USB PD, QC, etc.) is detected, and the corresponding maximum charging voltage and maximum charging current are determined. By communicating with the target device (i.e., performing a protocol handshake), the maximum charging power that the charging device can provide and that the target device can accept, as well as the corresponding maximum charging voltage and maximum charging current, are identified. Specifically, the charging protocol supported by the target device (e.g., USB PD, QC, etc.) is detected, and the maximum charging power and the corresponding maximum charging voltage and maximum charging current are identified.

[0062] Based on user instructions or current conditions, the system determines the target power supply mode, which includes: default charging mode (i.e., a mode that rapidly replenishes power by continuously using maximum charging power), first protection mode (i.e., a mode that suppresses heat generation by alternately using two different levels of charging power), and second protection mode (i.e., a mode that suppresses heat generation by continuously using lower charging power).

[0063] As an example, through a protocol handshake with a certain smartphone, it is identified that the maximum supported charging power is 45W (15V / 3A). The target power supply modes include default charging mode, first protection mode, and second protection mode, with the initial value (i.e., default option) being default charging mode.

[0064] As described in step S120, if the target power supply mode is the first protection mode, the target device is charged alternately using the first charging power and the second charging power; where the first charging power is less than or equal to the maximum charging power, and the second charging power is less than the first charging power.

[0065] When the target power supply mode is the first protection mode, the target device is charged using alternately the first charging voltage and first charging current corresponding to the first charging power and the second charging voltage and second charging current corresponding to the second charging power; where the first charging power is less than or equal to the maximum charging power, and the second charging power is less than the first charging power and is used to reduce the overall heat generation.

[0066] For example, if the maximum charging power of the target device is 45W (15V / 3A) and the target power supply mode is the first protection mode, then 7.5W (5V / 1.5A) will be used as the first charging power, and 5W (5V / 1A) will be used as the second charging power, and charging will be performed alternately. In each cycle, charging will be performed at high power for 30 seconds, followed by charging at low power for 1 minute.

[0067] As another example, if the target device has a maximum charging power of 45W (15V / 3A) and the target power supply mode is the first protection mode, charging is performed alternately using 7.5W (5V / 1.5A) as the first charging power and 0W (0V / 0A) as the second charging power (i.e., no power supply). In each cycle, charging is performed at high power for 20 seconds, followed by a 3-minute pause.

[0068] Referring to Figure 2, in one embodiment of this application, the method further includes:

[0069] S130: If the target power supply mode is the default charging mode, the target device is continuously charged using the maximum charging power.

[0070] S140: If the target power supply mode is the second protection mode, the target device is continuously charged using the third charging power; where the third charging power is less than the maximum charging power.

[0071] Building upon the default charging mode, two additional protection modes are added, not only supporting existing charging standards but also providing charging methods that use continuous low power or alternating high and low power to charge the device. This allows users to select different charging modes for different usage scenarios, meeting the needs for fast charging and battery protection.

[0072] The charging control method in this embodiment will be described in more detail below.

[0073] As described in step S130, if the target power supply mode is the default charging mode, the target device is continuously charged using the maximum charging power.

[0074] If the target power supply mode is the default charging mode, the device will be charged using the maximum charging voltage and maximum charging current corresponding to the maximum charging power.

[0075] For example, if the target device has a maximum charging power of 45W (15V / 3A) and the target power supply mode is the default charging mode, then charging will be performed continuously using 45W (15V / 3A).

[0076] As described in step S140, if the target power supply mode is the second protection mode, the target device is continuously charged using the third charging power; where the third charging power is less than the maximum charging power.

[0077] If the target power supply mode is the second protection mode, the target device is continuously charged using the third charging voltage and third charging current corresponding to the third charging power; where the third charging power is less than the maximum charging power and is used to reduce heat generation.

[0078] For example, if the maximum charging power of the target device is 45W (15V / 3A) and the target power supply mode is the second protection mode, then 5W (5V / 1A) will be used as the third charging power, and charging will be performed continuously.

[0079] In one embodiment of this application, the initial value of the target power supply mode is the default charging mode; the step of determining the target power supply mode for the device includes:

[0080] When the first selection command is received, the target power supply mode is set to the first protection mode.

[0081] When a second selection command is received, the target power supply mode is set to the second protection mode.

[0082] When the first release command is received in response to the first selection command, the target power supply mode is set to the default charging mode.

[0083] When a second release command is received in response to a second selection command, the target power supply mode is set to the default charging mode.

[0084] All of the above commands are issued by the user through an interaction device (e.g., pressing a button, operating a touch display, or entering application options). For example, the user issues the first selection command by double-clicking the physical button on the charger an odd number of times, and the first deactivation command by double-clicking an even number of times; and the second selection command by pressing and holding the physical button on the charger for two seconds an odd number of times, and the second deactivation command by pressing and holding it an even number of times.

[0085] This method sets the default charging mode as the initial value of the target power supply mode, thereby meeting the need for fast charging even when no user commands are received, and meeting the need for battery protection when user commands are received.

[0086] In another embodiment of this application, the step of determining a target power supply mode for the device under consideration includes:

[0087] The current time is obtained, and the initial value of the target power supply mode is determined based on that current time.

[0088] When a default selection command is received, the target power supply mode is set to the default charging mode.

[0089] When the first selection command is received, the target power supply mode is set to the first protection mode.

[0090] When a second selection command is received, the target power supply mode is set to the second protection mode.

[0091] When a default deselection command is received in response to a default selection command, the target power supply mode is set to the initial value of the target power supply mode.

[0092] When the first release command is received in response to the first selection command, the target power supply mode is set to the default charging mode.

[0093] When a second release command is received in response to a second selection command, the target power supply mode is set to the default charging mode.

[0094] Specifically, the system detects the current time using its internal clock; if the current time is in the first time zone, it sets the initial value of the target power supply mode to the default charging mode; if the current time is in the second time zone, it sets the initial value of the target power supply mode to the first protection mode; and if the current time is in the third time zone, it sets the initial value of the target power supply mode to the second protection mode. Here, the first, second, and third time zones each correspond to different time zones within a day, making up the entire day's time zones.

[0095] As an example, the system uses the internal clock to obtain the current time; if the current time is between 08:00 and 22:00 (excluding the start time), it sets the initial value of the target power supply mode to the default charging mode; if the current time is between 22:00 and 06:00 (excluding the start time), it sets the initial value of the target power supply mode to the first protection mode; and if the current time is between 06:00 and 08:00 (excluding the start time), it sets the initial value of the target power supply mode to the second protection mode.

[0096] This method combines intelligent system settings with active user selection to manage the charging process more efficiently and intelligently, improving the user experience and optimizing battery health.

[0097] In another embodiment of this application, a method for determining a target power supply mode for a device under consideration includes:

[0098] The total charging time T set by the user and the energy E required to fully charge the battery are obtained (this can be obtained through the battery management system). The energy E required to fully charge the battery is obtained from the total charging time T set by the user and the maximum charging power P. max If the product is less than (i.e., E < T × P) max ), set the target power supply mode to either the first protection mode or the second protection mode. Otherwise, set the target power supply mode to the default charging mode. Furthermore, in the case of the two protection modes, you need to set the charging plan according to the actual situation:

[0099] In the first protection mode, the first charging power P1, the second charging power P2, the unit time t1 of the first charging power, and the unit time t2 of the second charging power are determined based on the following method:

[0100] The average charging power E required to fully charge the battery within the total charging time T is calculated using the following formula: P average = E / T.

[0101] Set the first charging power P1 by the following formula: P1 = k × P average . Here, the coefficient k is a pre-defined value, greater than 1, and P max / P average takes a value within the following range (for example, a value within the range from 1 to 1.3, or the smaller of the two values of P max / P average . With this setting, it is ensured that the first charging power P1 does not exceed the maximum charging power P max , and the charging speed is moderately accelerated.

[0102] Set the second charging power P2 by the following formula: P2 = m × P average . Here, the coefficient m is a pre-defined value, taking a value within a range less than 1 (for example, from 0 to 0.5). With this setting, the power is reduced as much as possible to enable sufficient heat dissipation for the battery and the device.

[0103] Based on the power requirement of the following formula: (P1×t1 + P2×t2) / (t1 + t2) = P average derive the following formula: t1 = r·t2 = (1 - m) / (k - 1)·t2; where r is the ratio of t1 to t2, represented by the following formula: r = (1 - m) / (k - 1)

[0104] Based on the time requirement, set the following formula: n(t1 + t2) = T; where n is a pre-defined number of cycles, taking an integer value of 1 or greater (for example, an integer from 10 to 20). Alternatively, n is directly proportional to the numerical value of T (for example, n = α·T, α = 10 / 3h). This cycle is appropriately divided to ensure efficient heat dissipation.

[0105] Derive the following formula: t1 = (r / (r + 1))·(T / n) = (1 - m) / ((1 - m)+(k - 1))·(T / n); t2 = (1 / (r + 1))·(T / n) = (k - 1) / ((1 - m)+(k - 1))·(T / n).

[0106] Derive the following formula: t1 = (r / (r + 1))·(T / n) = (1 - m) / ((1 - m)+(k - 1))·(T / n); t2 = (1 / (r + 1))·(T / n) = (k - 1) / ((1 - m)+(k - 1))·(T / n).

[0107] As an example, maximum charging power P max Assuming a power consumption of 50W, a total charging time T=3 hours, and the energy required to fully charge the battery E=100W·h, the average charging power is calculated as follows: P average =E / T=100 / 3 W;

[0108] Using predefined coefficient values ​​of k=1.2, m=0.6, and n=10:

[0109] P1 = k × P average = 1.2 × 100 / 3 = 40W

[0110] P2 = m × P average = 0.6 × 100 / 3 W = 20W

[0111] t1=(1-m) / ((1-m)+(k-1) )·T / n=(1-0.6) / ((1-0.6)+(1.2-1) )·3 / 10=0.2 hours

[0112] t2=(k-1) / ((1-m)+(k-1) )·T / n=(1.2-1) / ((1-0.6)+(1.2-1) )·3 / 10=0.1 hour

[0113] In the second protection mode, the third charging power P3 is determined based on the following method:

[0114] The average charging power is calculated based on the energy E required to fully charge the battery within the total charging time T as follows: P average =E / T

[0115] Set the third charging power P3 as follows: P3 = P average

[0116] As an example, maximum charging power P max Assuming a power consumption of 50W, a total charging time T=3 hours, and the energy required to fully charge the battery E=100W·h:

[0117] 3rd charging power P3=P average = 100 / 3 W.

[0118] Through the method described above, users can set the total charging time according to their needs and specific circumstances, and the system intelligently adjusts the charging plan. This ensures that the battery is basically fully charged, or charged as much as possible, within the time set by the user, while also taking into full consideration the need for battery protection.

[0119] In one embodiment of this application, the step of determining the target power supply mode for the device in question includes the following:

[0120] When charging the target device, the interface output power of the connector is acquired, and the duration during which the interface output power is below the minimum output power within a preset time is recorded;

[0121] If the duration is less than the preset time, the battery status of the target device will be recorded as charged;

[0122] If the duration is equal to the preset time, the battery state of the target device is recorded as fully charged, and the target power supply mode is set to the default power supply mode.

[0123] For example, let's set the preset time to 120 seconds and the minimum output power to 1W.

[0124] During the charging process, the connector interface output power is continuously monitored, and based on this data, the battery's charge status is determined. Once the battery is recorded as fully charged, it automatically switches to the default power supply mode (i.e., bypass power supply mode). This prevents damage to the battery from continued charging after it has fully charged.

[0125] In one embodiment of this application, the method further includes:

[0126] If the target power supply mode is the default charging mode, provide the first interactive feedback;

[0127] If the target power supply mode is the first protection mode, provide the second interactive feedback;

[0128] If the target power supply mode is the second protection mode, a third interactive feedback is provided.

[0129] These interactive feedback features are implemented by controlling an interactive feedback device to generate visual and auditory content (e.g., lights turning on, sounds, screen displays, etc.). For example, a blue light is turned on when the target power supply mode is the default charging mode, a yellow light is turned on when it is the first protection mode, and a green light is turned on when it is the second protection mode.

[0130] The interactive feedback mechanism allows the user to be informed of the current power supply mode. This design improves the user experience, allowing the user to clearly understand the charging process and adjust as needed.

[0131] Referring to Figure 3, one embodiment of this application provides a charging device comprising the following configurations: a charging protocol controller 01, a step-up / step-down regulator 02, and a connector 03.

[0132] The step-up / step-down regulator 02 is connected to the input power supply, the charging protocol controller 01, and the connector 03, respectively, and is configured to adjust the voltage and current of the input power supply under the control of the charging protocol controller 01 and output it to the target device via the connector 03.

[0133] The charging protocol controller 01 is connected to the target device via connector 03 and is configured to obtain the maximum charging power through a protocol handshake with the target device via connector 03 and to determine the target power supply mode for the target device.

[0134] When the target power supply mode is the first protection mode, the charging protocol controller 01 controls the buck-boost regulator 02 to charge the target device using the first charging power and the second charging power alternately; where the first charging power is less than or equal to the maximum charging power, and the second charging power is less than the first charging power.

[0135] In one embodiment of this application, when the target power supply mode is the default charging mode, the charging protocol controller 01 controls the buck-boost regulator 02 to continuously charge the target device using the maximum charging power;

[0136] If the target power supply mode is the second protection mode, the charging protocol controller 01 controls the buck-boost regulator 02 to configure the target device to be charged using a third charging power continuously; where the third charging power is less than the maximum charging power.

[0137] In one embodiment of this application, the initial value of the target power supply mode is set to the default charging mode, and the device includes the following configuration: interaction device 04 and microprocessor 05; the microprocessor 05 is connected to the interaction device 04 and the charging protocol controller 01, respectively.

[0138] When the microprocessor 05 receives a first selection command from the interaction device 04, it sends a first protection notification to the charging protocol controller 01, and the charging protocol controller 01 sets the target power supply mode to the first protection mode;

[0139] When the microprocessor 05 receives a second selection command from the interaction device 04, it sends a second protection notification to the charging protocol controller 01, and the charging protocol controller 01 sets the target power supply mode to the second protection mode;

[0140] When the interaction device 04 receives a first cancellation command for the first selection command, the microprocessor 05 sends a first cancellation notification to the charging protocol controller 01, and the charging protocol controller 01 sets the target power supply mode to the default charging mode;

[0141] When the interaction device 04 receives a second cancellation command in response to a second selection command, the microprocessor 05 sends a second cancellation notification to the charging protocol controller 01, and the charging protocol controller 01 sets the target power supply mode to the default charging mode.

[0142] In one embodiment of this application, when charging the target device, the charging protocol controller 01 acquires the interface output power of the connector 03 and transmits it to the microprocessor 05, and the microprocessor 05 records the duration during which the interface output power is less than or equal to the minimum output power within a preset time;

[0143] If the duration is equal to the preset time, the microprocessor 05 sends a default power supply notification to the charging protocol controller 01, and the charging protocol controller 01 sets the target power supply mode to the default power supply mode.

[0144] In one embodiment of this application, the apparatus further includes an interaction feedback device 06; the microprocessor 05 is connected to the interaction feedback device 06.

[0145] If the target power supply mode is the default charging mode, the microprocessor 05 controls the interaction feedback device 06 to perform first interaction feedback;

[0146] If the target power supply mode is the first protection mode, the microprocessor 05 controls the interaction feedback device 06 to perform the second interaction feedback;

[0147] If the target power supply mode is the second protection mode, the microprocessor 05 controls the interaction feedback device 06 to perform the third interaction feedback.

[0148] Since the apparatus examples are similar to the method examples, the description should be brief, and relevant sections should be referred to the method examples.

[0149] Referring to Figures 4 and 5, in a specific implementation of this application, three types of charging programs are incorporated into the microprocessor 05.

[0150] Charging program A is the default mode for the charger and automatically returns to this state when the charger is in standby mode after being connected to a power source, or when the charger's interface output power remains below 1W for 120 seconds (i.e., when the battery is fully charged). This charging program corresponds to all charging protocol levels at the charging level of the microprocessor 05 and applies to all charging protocols and corresponding voltages / currents that the charger can support. When executing the charging mode of charging program A, the charging protocol controller 01 performs a charging protocol handshake with the device connected to the USB-C interface at all charging protocol levels, and illuminates the LED indicator blue at this time. In addition, the charger will continuously output power at the start of charging and will not automatically interrupt until the device is fully charged.

[0151] Charging program B is activated only by pressing and holding the switch for 2 seconds. In this case, the microprocessor 05 executes charging program B and illuminates the LED indicator green. This charging program corresponds to the 5W power level of the charging protocol controller 01, which is referred to as "second protection mode" in the above embodiment. Its main principle is to force the handshakeable protocol of the charging protocol controller 01 to be fixed to DCP, setting the device to only be able to handshake with a voltage of 5V, a maximum current of 1A, and a maximum power of 5W. In this mode, the battery temperature is significantly reduced when charging devices such as smartphones, tablets, and laptops, and the lithium-ion battery temperature is kept consistently low. In addition, after charging starts, the charger monitors the battery's charging power and continuously outputs power until the device is fully charged.

[0152] Charging program C is activated only by double-clicking the switch. In this case, the microprocessor 05 executes charging program C and illuminates the LED indicator yellow. This charging program corresponds to the 15W power level of the charging protocol controller 01, which is referred to as the "first protection mode" in the above embodiment. Its main principle is to adjust the handshakeable protocol of the charging protocol controller 01 to exclude the 15V voltage level and limit the total power of the charger to within 15W. This charging program incorporates a program that performs intermittent power output, so that after the charger outputs power for a certain period of time, it temporarily stops outputting and then resumes outputting again. This design is intended to supply high power to the battery during charging while preventing the battery temperature from rising due to prolonged charging.

[0153] The charger can be started simply by connecting it to a power source, requiring no special operation. In this case, the charger's microprocessor 05 automatically reads the default mode, executes charging program A, and illuminates the LED indicator blue. In this state, the charging protocol controller 01 is set to all charging protocol levels, so when a device is connected to the USB-C interface, it performs a charging voltage / current handshake to determine the final voltage / current.

[0154] The microprocessor 05 monitors the user's button operation to switch charging modes after power is connected. When the user presses and holds the button for 2 seconds, the microprocessor 05 loads the second protection mode and executes charging program B, illuminating the LED indicator green. At this time, the microprocessor 05 sends a command to the charging protocol controller 01 via I2C, causing the charging protocol controller 01 to change to a 5W power level. In this case, the charging protocol handshake between the device and the charger is performed using only the DCP protocol, and the final output is a voltage of 5V / maximum current of 1A.

[0155] When charging in the second protection mode, the charging protocol controller 01 sends real-time output voltage / current data to the microprocessor 05 via I2C, which the microprocessor 05 then evaluates. If the output power of the USB-C interface exceeds 1W, the charging program is not changed and output continues. When the output power of the USB-C interface falls below 1W, the microprocessor 05 starts a timer, and if this condition persists for 120 seconds or more, the charging program is changed. Alternatively, if the user requests to exit the mode by pressing a button, the microprocessor 05 reloads the default mode and executes charging program A.

[0156] When the user double-clicks the button, the microprocessor 05 loads the first protection mode and executes the charging program C, illuminating the LED indicator yellow. At this time, the microprocessor 05 sends a command to the charging protocol controller 01 via I2C, changing the charging protocol controller 01 to a 15W power level. In this case, the charging protocol handshake between the device and the charger is performed using only the voltage / current options supported by the 15W power level.

[0157] When charging in the first protection mode, the charging protocol controller 01 sends real-time output voltage / current data to the microprocessor 05 via I2C, which the microprocessor 05 then evaluates. If the output power of the USB-C interface exceeds 1W, the charging program is not changed, and this intermittent output state is maintained. Specifically, after 20 minutes of output, the charger temporarily stops outputting via the charging protocol and a switch in the DC-DC power control module, and then resumes outputting after 3 minutes. In this process, when the output power of the USB-C interface falls below 1W, the microprocessor 05 activates a timer, and if this state persists for 120 seconds or more, the charging program is changed. Alternatively, if the user requests to exit the mode by pressing a button, the microprocessor 05 reloads the default mode and executes charging program A.

[0158] All of the above embodiments are described in a step-by-step manner, and each embodiment focuses on the differences from the other embodiments. Common or similar parts between embodiments should be cross-referenced.

[0159] While preferred embodiments of this application have been described, those skilled in the art may make further changes and modifications to these embodiments after grasping the basic creative concept. Therefore, the attached claims include both preferred embodiments and all changes and modifications that fall within the scope of the embodiments of this application.

[0160] Finally, in this specification, relational terms such as “first” and “second” are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, “contains,” “includes,” or any variation thereof are intended to be non-exclusive inclusions, meaning that a process, method, article, or terminal device containing a set of elements includes not only those elements but also other elements not explicitly listed, and elements inherently present in that process, method, article, or terminal device. Unless further restrictions exist, an element defined in the phrase “contains one ~” does not preclude the presence of other identical elements in a process, method, article, or terminal device containing that element.

[0161] The charging control method and charging device provided in this application have been described in detail above. While this specification has described the principles and embodiments of this application using specific examples, these descriptions are solely for the purpose of understanding the method and core ideas of this application. A person of general skill in the art may modify specific embodiments and scope of application based on the ideas of this application. Therefore, the contents of this specification should not be construed as limitations of this application. Cross-references to related applications.

[0162] This application claims priority under Chinese Patent Application No. 202411572578.4, filed on November 5, 2024, and its contents are incorporated herein by reference in their entirety.

Claims

1. A charging control method, characterized by including the following: A step of obtaining the maximum charging power based on a protocol handshake with the target device and determining the target power supply mode for the target device; If the target power supply mode is the first protection mode, the device is charged by alternately using the first charging power and the second charging power; where the first charging power is less than or equal to the maximum charging power, and the second charging power is less than the first charging power.

2. The method according to claim 1, further comprising: If the target power supply mode is the default charging mode, the step is to continuously charge the target device at maximum charging power; If the target power supply mode is the second protection mode, the device is continuously charged with a third charging power; where the third charging power is less than the maximum charging power.

3. The method according to claim 2, characterized in that the initial value of the target power supply mode is the default charging mode, and the step of determining the target power supply mode of the target device includes the following: When the first selection command is received, the target power supply mode is set to the first protection mode; When a second selection command is received, the target power supply mode is set to the second protection mode; If a first cancellation command is received in response to a first selection command, the target power supply mode is set to the default charging mode; If a second cancellation command is received in response to a second selection command, the target power supply mode is set to the default charging mode.

4. The method according to claim 2, characterized in that the step of determining the target power supply mode of the target device includes the following: When the target device is charging, the interface output power of the connector is acquired, and the time during which the interface output power is less than or equal to the minimum output power within a preset period is recorded; if that time is equal to the preset period, the target power supply mode is set to the default power supply mode.

5. The method according to claim 2, further comprising: If the target power supply mode is the default charging mode, perform the first interaction feedback; If the target power supply mode is the first protection mode, perform the second interaction feedback; If the target power supply mode is the second protection mode, a third interaction feedback is performed.

6. A charging device comprising a charging protocol controller, a step-up / step-down regulator, and a connector: The step-up / step-down regulator is connected to the input power supply, the charging protocol controller, and the connector, respectively, and is configured to adjust the voltage and current of the input power supply under the control of the charging protocol controller and output them to the target device via the connector; The charging protocol controller is connected to the target device via a connector and is configured to obtain the maximum charging power based on a protocol handshake with the target device via the connector, and to determine the target power supply mode of the target device; When the target power supply mode is the first protection mode, the charging protocol controller is configured to control the buck-boost regulator to charge the charging protocol controller using a first charging power and a second charging power alternately; where the first charging power is less than or equal to the maximum charging power, and the second charging power is less than the first charging power.

7. The apparatus according to claim 6, characterized by the following: If the target power supply mode is the default power supply mode, the charging protocol controller is configured to control the buck-boost regulator to continuously charge the target device at maximum charging power; When the target power supply mode is the second protection mode, the charging protocol controller is configured to control the buck-boost regulator to continuously charge the target device with a third charging power, where the third charging power is less than the maximum charging power.

8. The apparatus according to claim 7, characterized by the following: The initial value of the target power supply mode is the default charging mode; The device further includes an interactive device and a microprocessor; The microprocessor is connected to the interactive device and the charging protocol controller, respectively; When the microprocessor receives a first selection command from the interactive device, it is configured to send a first protection notification to the charging protocol controller, which then sets the target power supply mode to the first protection mode; When the microprocessor receives a second selection command from the interactive device, it is configured to send a second protection notification to the charging protocol controller, which then sets the target power supply mode to the second protection mode; When the interactive device receives a first release command for a first selection command, the microprocessor is configured to send a first release notification to the charging protocol controller, which sets the target power supply mode to the default charging mode; When the interactive device receives a second release command in response to a second selection command, the microprocessor is configured to send a second release notification to the charging protocol controller, which then sets the target power supply mode to the default charging mode.

9. The apparatus according to claim 8, characterized by the following: The charging protocol controller is configured to acquire the interface output power of the connector when the target device is charging and to send it to the microprocessor, which is configured to record the time within a preset period when the interface output power is less than or equal to the minimum output power; If that time is equal to a preset period, the microprocessor sends a default power supply notification to the charging protocol controller, which is configured to set the target power supply mode as the default power supply mode.

10. The apparatus according to claim 8, further comprising an interactive feedback device: The microprocessor is connected to an interactive feedback device and is configured as follows: If the target power supply mode is the default charging mode, the microprocessor controls the interactive feedback device to provide first interactive feedback; If the target power supply mode is the first protection mode, the microprocessor controls the interactive feedback device to perform a second interactive feedback; If the target power supply mode is the second protection mode, the microprocessor controls the interactive feedback device to perform a third interactive feedback.

Images