Charging control method and charging equipment

Abstract

The invention provides a charging control method and charging equipment. The charging control method comprises the following steps: acquiring the maximum charging power of protocol handshake with target equipment, and determining a target power supply mode for the target equipment; when the target power supply mode is a first protection mode, charging the target equipment with alternate first charging power and second charging power; wherein the first charging power is smaller than or equal to the maximum charging power; the second charging power is smaller than the first charging power. A user is allowed to select the charging mode in a specific usage scenario to meet the requirement of battery protection by providing a charging mode for charging the device with alternating high power and low power.

Description

Technical Field

[0001] The present application relates to the field of charging control technology, in particular to a charging control method and a charging device. Background Art

[0002] Currently, consumer electronic products (such as smartphones, tablets, and laptops) are usually powered by lithium batteries. In order to meet users' demand for fast charging, major standard organizations and manufacturers have introduced a variety of charging protocols, such as the USB Power Delivery (USB PD) protocol developed by the USB-IF organization and the QC (Quick Charge) and PE (Pump Express) protocols developed by other manufacturers. These protocols tend to increase the charging voltage and current to achieve higher charging power, thereby shortening the charging time and improving the user experience.

[0003] Currently, the USB PD protocol has developed to version 3.1, and its maximum allowed charging power has reached 240W (48V / 5A), which is a significant improvement over the 5V / 1.5A in the BC 1.2 specification. However, a significant problem brought about by high-power fast charging is that lithium batteries generate more heat when charging, and excessive heat will accelerate the aging of lithium batteries, reduce their service life, and may cause waste of raw materials and environmental pollution.

[0004] To address this problem, many manufacturers have adopted a compromise solution when designing charging systems: fast charging at the highest power of the protocol handshake when the battery is low, and gradually reducing the charging voltage and current when the battery reaches a certain level. Although this method reduces battery heat to a certain extent, it cannot provide maximum battery protection because the continuous high power state in the early stage will still cause unnecessary temperature rise. Summary of the invention

[0005] In view of the above-mentioned problems, the present application is proposed to provide a charging control method and a charging device that overcome the problems or at least partially solve the problems, including:

[0006] A charging control method, comprising:

[0007] Obtaining a maximum charging power for a protocol handshake with a target device, and determining a target power supply mode for the target device;

[0008] When the target power supply mode is the first protection mode, the target device is charged with an alternating first charging power and a second charging power; wherein 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, it also includes:

[0010] When the target power supply mode is a default charging mode, charging the target device with the continuous maximum charging power;

[0011] When the target power supply mode is the second protection mode, the target device is charged with a continuous third charging power; wherein the third charging power is less than the maximum charging power.

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

[0013] When receiving the first selection instruction, setting the target power supply mode to a first protection mode;

[0014] When receiving the second selection instruction, setting the target power supply mode to a second protection mode;

[0015] When a first cancel instruction for the first selection instruction is received, setting the target power supply mode to a default charging mode;

[0016] When a second cancel instruction for the second selection instruction is received, the target power supply mode is set as a default charging mode.

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

[0018] When charging the target device, obtaining the interface output power of the connector, and recording the duration of time during which the interface output power is less than or equal to the minimum output power within a preset time period;

[0019] When the duration is greater than the preset duration, the target power supply mode is set as a default power supply mode.

[0020] Preferably, the method further comprises:

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

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

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

[0024] A charging device, comprising: 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 is used to adjust the voltage and current of the input power supply under the control of the charging protocol controller, and output it to the target device through the connector;

[0026] The charging protocol controller is connected to the target device through the connector, and is used to obtain the maximum charging power of the protocol handshake with the target device through the connector, and determine 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 is used to control the buck-boost regulator to charge the target device with alternating first charging power and second charging power; wherein, 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.

[0028] Preferably, when the target power supply mode is a default charging mode, the charging protocol controller is used to control the buck-boost regulator to charge the target device at the continuous maximum charging power;

[0029] When the target power supply mode is the second protection mode, the charging protocol controller is used to control the buck-boost regulator to charge the target device with a continuous third charging power; wherein the third charging power is less than the maximum charging power.

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

[0031] When receiving a first selection instruction from the interaction device, the microprocessor is used to send a first protection notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode to a first protection mode;

[0032] When receiving a second selection instruction from the interaction device, the microprocessor is used to send a second protection notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode to a second protection mode;

[0033] When receiving a first cancellation instruction for the first selection instruction from the interaction device, the microprocessor is used to send a first cancellation notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode to a default charging mode;

[0034] When receiving a second cancellation instruction for the second selection instruction from the interaction device, the microprocessor is used to send a second cancellation notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode as a default charging mode.

[0035] Preferably, when charging the target device, the charging protocol controller is used to obtain the interface output power of the connector and send it to the microprocessor, and the microprocessor is used to record the duration of the interface output power being less than or equal to the minimum output power within a preset duration;

[0036] When the duration is greater than the preset duration, the microprocessor is used to send a default power supply notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode as the default power supply mode.

[0037] Preferably, it also includes an interactive feedback device; the microprocessor is connected to the interactive feedback device;

[0038] When the target power supply mode is a default charging mode, the microprocessor is used to control the interactive feedback device to make a first interactive feedback;

[0039] When the target power supply mode is the first protection mode, the microprocessor is used to control the interactive feedback device to make a second interactive feedback;

[0040] When the target power supply mode is the second protection mode, the microprocessor is used to control the interactive feedback device to make a third interactive feedback.

[0041] This application has the following advantages:

[0042] In response to the problem that existing charging methods cannot provide maximum battery protection, the present application provides a solution that allows the use of alternating high power and low power to charge devices, specifically: obtaining the maximum charging power of the protocol handshake with the target device, and determining the target power supply mode for the target device; when the target power supply mode is the first protection mode, charging the target device with alternating first charging power and second charging power; wherein 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 a charging method for charging the device with alternating high power and low power, the user can select the charging mode in a specific usage scenario to meet the battery protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 is a flowchart of the steps of the first part of the charging control method provided by an embodiment of the present application;

[0046] Figure 2 is a flowchart of the steps of the second part of the charging control method provided by an embodiment of the present application;

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

[0048] Figure 4 It is a first flow chart of a charging control method provided by a specific implementation of the present application;

[0049] Figure 5 It is a second flow chart of a charging control method provided by a specific implementation of the present application.

[0050] The reference numerals in the drawings of the specification are as follows:

[0051] 01. Charging protocol controller; 02. Buck-boost regulator; 03. Connector; 04. Interaction device; 05. Microprocessor; 06. Interaction feedback device. DETAILED DESCRIPTION

[0052] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0053] The inventors have found through analysis of the prior art that users usually charge their devices at night, when sufficient charging time makes fast charging capability unnecessary. Traditional charging devices will automatically select the maximum supported power for charging during the charging protocol handshake, lacking the flexibility for users to select the appropriate charging power. Therefore, it is a reasonable and effective strategy to allow users to use continuous high power or intermittent high power at night when they have plenty of time to reduce temperature rise and extend battery life.

[0054] It should be noted that in any embodiment of the present application, the method and the device are used to charge or power a target device, and the target device is provided with a battery assembly for storing and providing electrical energy, and the battery assembly includes at least one of a lithium-ion battery, a nickel-metal hydride battery and a nickel-cadmium battery, preferably a lithium-ion battery.

[0055] Reference Figure 1 In one embodiment of the present application, a charging control method is provided, comprising:

[0056] S110, obtaining a maximum charging power for a protocol handshake with a target device, and determining a target power supply mode for the target device;

[0057] S120. When the target power supply mode is the first protection mode, the target device is charged with an alternating first charging power and a second charging power; wherein 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 for charging the device with alternating high power and low power, the user can select the charging mode in a specific usage scenario to meet the battery protection requirements.

[0059] Next, the charging control method in this exemplary embodiment will be further described.

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

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

[0062] The target power supply mode is determined according to user instructions or the current situation; wherein the target power supply mode includes: a default charging mode (i.e., continuously using the maximum charging power to quickly replenish electrical energy), a first protection mode (i.e., alternating between two different charging powers to reduce heat generation) and a second protection mode (i.e., continuously using a lower charging power to reduce heat generation).

[0063] As an example, by handshaking with a smartphone protocol, it is identified that the maximum charging power it supports is 45W (15V / 3A). The target power supply mode includes a default charging mode, a first protection mode, and a second protection mode, wherein the initial value (ie, the default option) is the default charging mode.

[0064] As described in step S120, when the target power supply mode is the first protection mode, the target device is charged with an alternating first charging power and a second charging power; wherein 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 alternately using a first charging voltage and a first charging current corresponding to a first charging power, and a second charging voltage and a second charging current corresponding to a second charging power; wherein 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, so as to reduce overall heat.

[0066] As an 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, 7.5W (5V / 1.5A) is used as the first charging power and 5W (5V / 1A) is used as the second charging power, and the charging is performed alternately. In each cycle, 30 seconds of high-power charging is followed by 1 minute of low-power charging.

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

[0068] Reference Figure 2 In one embodiment of the present application, the method further includes:

[0069] S130: When the target power supply mode is a default charging mode, charging the target device with the continuous maximum charging power;

[0070] S140. When the target power supply mode is the second protection mode, charging the target device with a continuous third charging power; wherein the third charging power is less than the maximum charging power.

[0071] By adding two additional protection modes on the basis of the default charging mode, it not only supports the existing charging specifications, but also provides a charging method for charging the device with continuous low power or alternating high power and low power, allowing different charging modes to be selected in different usage scenarios to meet the needs of fast charging or battery protection.

[0072] Next, the charging control method in this exemplary embodiment will be further described.

[0073] As described in step S130, when the target power supply mode is the default charging mode, the target device is charged with the continuous maximum charging power.

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

[0075] As an example, the maximum charging power of the target device is 45W (15V / 3A), and the target power supply mode is the default charging mode, then charging is continued at 45W (15V / 3A).

[0076] As described in step S140, when the target power supply mode is the second protection mode, the target device is charged with a continuous third charging power; wherein the third charging power is less than the maximum charging power.

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

[0078] As an example, 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) is used as the third charging power for continuous charging.

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

[0080] When receiving the first selection instruction, setting the target power supply mode to a first protection mode;

[0081] When receiving the second selection instruction, setting the target power supply mode to a second protection mode;

[0082] When a first cancel instruction for the first selection instruction is received, setting the target power supply mode to a default charging mode;

[0083] When a second cancel instruction for the second selection instruction is received, the target power supply mode is set as a default charging mode.

[0084] It should be noted that the above instructions are all issued by the user operating the interactive device (such as pressing a button, touching a display screen, or filling in application options, etc.). As an example, the user double-clicks the physical button on the charger an odd number of times to issue a first selection instruction, and double-clicks the physical button on the charger an even number of times to issue a first cancellation instruction; long presses the physical button on the charger for 2 seconds an odd number of times to issue a second selection instruction, and long presses the physical button on the charger for 2 seconds an even number of times to issue a second cancellation instruction.

[0085] The method uses the default charging mode as the initial value of the target power supply mode, which can meet the demand for fast charging without receiving user instructions, and meet the demand for battery protection after receiving user instructions.

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

[0087] Acquire the current time, and determine the initial value of the target power supply mode according to the current time;

[0088] When a default selection instruction is received, setting the target power supply mode to a default charging mode;

[0089] When receiving the first selection instruction, setting the target power supply mode to a first protection mode;

[0090] When receiving the second selection instruction, setting the target power supply mode to a second protection mode;

[0091] When a default cancellation instruction for the default selection instruction is received, setting the target power supply mode to an initial value of the target power supply mode;

[0092] When a first cancel instruction for the first selection instruction is received, setting the target power supply mode to a default charging mode;

[0093] When a second cancel instruction for the second selection instruction is received, the target power supply mode is set as a default charging mode.

[0094] Specifically, the current time is detected by a built-in clock; if the current time is between the first time period, the initial value of the target power supply mode is set to the default charging mode; if the current time is between the second time period, the initial value of the target power supply mode is set to the first protection mode; if the current time is between the third time period, the initial value of the target power supply mode is set to the third protection mode; wherein the first time period, the second time period and the third time period respectively correspond to different time periods in a day and constitute a total time period of a day.

[0095] As an example, the current time is obtained through the built-in clock. If the current time is between 08:00 and 22:00 (excluding the starting value), the initial value of the target power supply mode is set to the first protection mode; if the current time is between 22:00 and 06:00 (excluding the starting value), the initial value of the target power supply mode is set to the first protection mode; if the current time is between 06:00 and 08:00 (excluding the starting value), the initial value of the target power supply mode is set to the second protection mode.

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

[0097] In yet another embodiment of the present application, the step of determining a target power supply mode for the target device includes:

[0098] Get the total charging time T set by the user and the energy E required to fully charge the battery (which can be obtained through the battery management system); if the energy E required to fully charge the battery is less than the total charging time T set by the user and the maximum charging power P max The product of (i.e. E <T×P max ), set the target power supply mode to the first protection mode or the second protection mode; if not, set the target power supply mode to the default charging mode; for the two protection modes, the charging plan needs to be set according to the actual situation:

[0099] For the first protection mode, the first charging power P1, the second charging power P2, the first unit time length t1 of the first charging power, and the second unit time length t2 of the second charging power are determined according to the following method:

[0100] Calculate the average power required to fully charge the battery within the total charging time T:

[0101]

[0102] P1=k×P average ; Where k is a predefined coefficient, the value is greater than 1 and less than or equal to (For example, any value in (1,1.3] and The smaller value in the figure) ensures that the first charging power P1 does not exceed the maximum charging power At the same time, speed up charging moderately;

[0103] P2=m×P average ; Wherein, m is a predefined coefficient with a value less than 1 (such as 0 to 0.5), which can reduce the power as much as possible to allow the battery and the device to dissipate heat sufficiently;

[0104] According to power requirements:

[0105] get: Where r is the ratio of t1 to t2,

[0106] According to the time requirement: n(t1+t2)=T; wherein n is a predefined number of cycles, and its value is an integer greater than or equal to 1 (such as an integer from 10 to 20); or, n is positively correlated with the value of T (such as n=α·T, ), the cycle can be reasonably divided to ensure timely heat dissipation;

[0107] get:

[0108] As an example, the maximum charging power P is obtained. max =50W; total charging time T = 3 hours, the total energy required to fully charge the battery E = 100W·h; then

[0109] Predefine k = 1.2, m = 0.6, n = 10; then:

[0110]

[0111] For the second protection mode, the third charging power P3 is determined according to the following method:

[0112] Calculate the average power required to fully charge the battery within the total charging time T:

[0113]

[0114] P3=P average .

[0115] As an example, the maximum charging power P is obtained. max =50W; total charging time T = 3 hours, the total energy required to fully charge the battery E = 100W·h; then

[0116] Through the above method, users can set the total charging time according to their own needs or specific situations. The system will intelligently adjust the charging plan to ensure that the battery charging is basically completed or the battery is charged as much as possible within the time set by the user, while fully considering the needs of battery protection.

[0117] In an embodiment of the present application, the step of determining a target power supply mode for the target device includes:

[0118] When charging the target device, obtaining the interface output power of the connector, and recording the duration of time during which the interface output power is less than or equal to the minimum output power within a preset time period;

[0119] When the duration is less than or equal to the preset duration, recording the battery status of the target device as a charging status;

[0120] When the duration is greater than the preset duration, the battery state of the target device is recorded as a fully charged state, and the target power supply mode is set as a default power supply mode.

[0121] As an example, the preset duration is 120 seconds and the minimum output power is 1W.

[0122] By continuously monitoring the interface output power of the connector during the charging process, the battery charging status is judged based on this data, and when the battery is recorded as fully charged, it is automatically adjusted to the default power supply mode (i.e., bypass power supply mode) instead of the charging mode, thereby avoiding damage to the battery caused by continued charging after it is fully charged.

[0123] In an embodiment of the present application, the method further includes:

[0124] When the target power supply mode is a default charging mode, providing a first interactive feedback;

[0125] When the target power supply mode is the first protection mode, providing a second interactive feedback;

[0126] When the target power supply mode is the second protection mode, a third interactive feedback is performed.

[0127] It should be noted that the above interactive feedback is issued by controlling the interactive feedback device to generate audio-visual content (such as emitting light, sound, and screen display, etc.). As an example, when the target power supply mode is the default charging mode, a blue light is emitted; when the target power supply mode is the first protection mode, a yellow light is emitted; when the target power supply mode is the second protection mode, a green light is emitted.

[0128] The interactive feedback mechanism can convey the current power mode status to the user. This design improves the user experience and enables users to clearly understand the charging process and make adjustments as needed.

[0129] Reference Figure 3 In one embodiment of the present application, a charging device is also provided, including: a charging protocol controller 01, a buck-boost regulator 02 and a connector 03;

[0130] The buck-boost regulator 02 is connected to the input power supply, the charging protocol controller 01 and the connector 03 respectively, and is used 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 through the connector 03;

[0131] The charging protocol controller 01 is connected to the target device through the connector 03, and is used to obtain the maximum charging power of the protocol handshake with the target device through the connector 03, and determine the target power supply mode for the target device;

[0132] When the target power supply mode is the first protection mode, the charging protocol controller 01 is used to control the buck-boost regulator 02 to charge the target device with alternating first charging power and second charging power; wherein, 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.

[0133] In one embodiment of the present application, when the target power supply mode is the default charging mode, the charging protocol controller 01 is used to control the buck-boost regulator 02 to charge the target device at the continuous maximum charging power;

[0134] When the target power supply mode is the second protection mode, the charging protocol controller 01 is used to control the buck-boost regulator 02 to charge the target device with a continuous third charging power; wherein the third charging power is less than the maximum charging power.

[0135] In an embodiment of the present application, the initial value of the target power supply mode is a default charging mode; the device further includes an interaction device 04 and a microprocessor 05; the microprocessor 05 is connected to the interaction device 04 and the charging protocol controller 01 respectively;

[0136] When receiving the first selection instruction from the interaction device 04, the microprocessor 05 is used to send a first protection notification to the charging protocol controller 01, and the charging protocol controller 01 is used to set the target power supply mode to the first protection mode;

[0137] When receiving the second selection instruction from the interaction device 04, the microprocessor 05 is used to send a second protection notification to the charging protocol controller 01, and the charging protocol controller 01 is used to set the target power supply mode to the second protection mode;

[0138] When receiving a first cancellation instruction for the first selection instruction from the interaction device 04, the microprocessor 05 is used to send a first cancellation notification to the charging protocol controller 01, and the charging protocol controller 01 is used to set the target power supply mode to a default charging mode;

[0139] When receiving a second cancel instruction for the second selection instruction from the interaction device 04, the microprocessor 05 is used to send a second cancel notification to the charging protocol controller 01, and the charging protocol controller 01 is used to set the target power supply mode as the default charging mode.

[0140] In one embodiment of the present application, when the target device is charged, the charging protocol controller 01 is used to obtain the interface output power of the connector 03 and send it to the microprocessor 05, and the microprocessor 05 is used to record the duration of the interface output power being less than or equal to the minimum output power within a preset duration;

[0141] When the duration is greater than the preset duration, the microprocessor 05 is used to send a default power supply notification to the charging protocol controller 01, and the charging protocol controller 01 is used to set the target power supply mode as the default power supply mode.

[0142] In one embodiment of the present application, the device further comprises an interactive feedback device 06; the microprocessor 05 is connected to the interactive feedback device 06;

[0143] When the target power supply mode is the default charging mode, the microprocessor 05 is used to control the interactive feedback device 06 to make a first interactive feedback;

[0144] When the target power supply mode is the first protection mode, the microprocessor 05 is used to control the interactive feedback device 06 to make a second interactive feedback;

[0145] When the target power supply mode is the second protection mode, the microprocessor 05 is used to control the interactive feedback device 06 to make a third interactive feedback.

[0146] As for the device embodiment, since it is similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

[0147] Reference Figure 4 ,5 In a specific implementation of the present application, the microprocessor 05 has three built-in charging programs.

[0148] Charging program A is the default mode of the charger, which refers to the default state when the charger is in standby mode after being powered on, or the state that automatically returns after 120 seconds (i.e., the battery is fully charged) because the output power of the charger interface is less than or equal to 1W. This charging program corresponds to the full charging protocol gear of the charging gear of the microprocessor 05, which is also all the charging protocols and corresponding voltage / current that the charger can support. When the charging mode of charging program A is running, the charging protocol controller 01 will perform a charging protocol handshake with the device connected to the USB C interface at the full charging protocol gear. At this time, the LED light is displayed in blue, and when charging starts, the charger will continue to output power without interruption until the charged device is fully charged.

[0149] Charging program B can only be activated by pressing the button switch for 2 seconds. At this time, the microprocessor 05 will start running charging program B, and the LED light will be set to green. The charging program corresponds to the 5W power position of the charging protocol controller 01. This position is called the second protection mode in the above embodiment. Its main principle is to forcibly lock the handshake protocol of the charging protocol controller 01 in DCP, so that the device can only handshake with the charger at 5V voltage, 1A maximum current, and a maximum power of 5W. At this time, the battery temperature of most mobile phones, tablets, and laptop computers will be greatly reduced during charging, so that the temperature of the lithium battery is always kept at a low level, and after starting charging, the charger will monitor the battery charging power value and continue to output power without interruption until the charged device is fully charged.

[0150] The charging program C needs to be activated by double-clicking the button switch. At this time, the microprocessor 05 will start running the charging program C, and the LED light is set to yellow. The charging program corresponds to the 15W power level of the charging protocol controller 01. This level is called the first environmental protection mode in the above embodiment. Its main principle is to adjust the handshake protocol of the charging protocol controller 01, remove the 15V voltage level, and limit the total power of the charger to less than 15W. The charging program has a built-in intermittent power output program. When the charger outputs power for more than a certain period of time, it will stop for a certain period of time and then continue to output power. The purpose of this design is to allow the device battery to obtain higher power when being charged, and at the same time prevent the battery temperature from rising due to long-term charging of the battery.

[0151] When the charger is connected to the power supply, no other operation is required to turn on the power. At this time, the charger's microprocessor 05 will automatically load the default mode to execute the charging program A, and the LED indicator will be blue. At this time, the charging protocol controller 01 of the charger is in the full charging protocol position. If a device is connected to the charger's USB-C interface at this time, the charging voltage / current provided by the full charging protocol will be used to handshake with the device to agree on the final voltage / current.

[0152] After turning on the power, the microprocessor 05 will monitor whether the user presses the button to switch the charging mode. When the user presses the button for 2 seconds, the microprocessor 05 will load the second protection mode to execute the charging program B, and the LED indicator will be green. The microprocessor 05 will send an instruction to the charging protocol controller 01 through I2C to change the charging protocol controller 01 to 5W power level. At this time, the charging protocol handshake between the device and the charger will only be carried out in DCP protocol, and the final output voltage is 5V / maximum current 1A.

[0153] When charging in the second protection mode, the charging protocol controller 01 will send the real-time output voltage / current data to the microprocessor 05 through I2C for judgment. When the USB-C interface power output is greater than 1W, the charging process

[0154] The power output will continue until the USB-C interface power output is ≤1W, and the microprocessor 05 will start timing. When the duration exceeds 120 seconds, the microprocessor 05 will change the charging program, or the user actively presses a button to request exit. At this time, the microprocessor 05 reloads the default mode to execute charging program A.

[0155] When the user double-clicks the button, the microprocessor 05 will load the first protection mode to execute the charging program C, the LED indicator light turns yellow, and the microprocessor 05 will send an instruction to the charging protocol controller 01 through I2C to change the charging protocol controller 01 to the 15W power gear. At this time, when the device shakes hands with the charger charging protocol, the charging voltage / current can only be selected from the voltage / current options supported in the 15W power gear.

[0156] When charging in the first protection mode, the charging protocol controller 01 will send the real-time output voltage / current data to the microprocessor 05 through I2C for judgment. When the USB-C interface power output > 1W, the charging program will not change. At this time, the power supply is in an intermittent output state. After 20 minutes of output each time, the charger will actively stop the power output through the charging protocol and the switch in the DC-DC power supply control module. It will be turned on again after 3 minutes until the USB-C interface power output is ≤1W. The microprocessor 05 will start timing. When the duration exceeds 120 seconds, the microprocessor 05 will change the charging program, or the user actively presses a button to request to exit. At this time, the microprocessor 05 reloads the default mode to execute the charging program A.

[0157] It should be noted that the above embodiments are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0158] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the interpretation of the attached claims includes the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0159] Finally, it should be noted that in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or terminal device including the elements.

[0160] The above is a detailed introduction to the charging control method and charging device provided by the present application. The present specification uses specific embodiments to explain the principles and implementation methods of the present application. The above embodiments are only used to help understand the method and its core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A charging control method, characterized in that: include: Obtaining a maximum charging power for a protocol handshake with a target device, and determining a target power supply mode for the target device; When the target power supply mode is the first protection mode, the target device is charged with an alternating first charging power and a second charging power; wherein 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, characterized in that Also includes: When the target power supply mode is a default charging mode, charging the target device with the continuous maximum charging power; When the target power supply mode is the second protection mode, the target device is charged with a continuous third charging power; wherein 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 a default charging mode; The step of determining a target power supply mode for the target device includes: When receiving the first selection instruction, setting the target power supply mode to a first protection mode; When receiving the second selection instruction, setting the target power supply mode to a second protection mode; When a first cancel instruction for the first selection instruction is received, setting the target power supply mode to a default charging mode; When a second cancel instruction for the second selection instruction is received, the target power supply mode is set as a default charging mode.

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

5. The method according to claim 2, characterized in that: The method further comprises: When the target power supply mode is a default charging mode, providing a first interactive feedback; When the target power supply mode is the first protection mode, providing a second interactive feedback; When the target power supply mode is the second protection mode, a third interactive feedback is performed.

6. A charging device, characterized in that: include: Charging protocol controller, buck-boost regulator and connector; The buck-boost regulator is connected to the input power supply, the charging protocol controller and the connector respectively, and is used to adjust the voltage and current of the input power supply under the control of the charging protocol controller, and output it to the target device through the connector; The charging protocol controller is connected to the target device through the connector, and is used to obtain the maximum charging power of the protocol handshake with the target device through the connector, and determine the target power supply mode for the target device; When the target power supply mode is the first protection mode, the charging protocol controller is used to control the buck-boost regulator to charge the target device with alternating first charging power and second charging power; wherein, 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 device according to claim 6, characterized in that When the target power supply mode is a default charging mode, the charging protocol controller is used to control the buck-boost regulator to charge the target device at the continuous maximum charging power; When the target power supply mode is the second protection mode, the charging protocol controller is used to control the buck-boost regulator to charge the target device with a continuous third charging power; wherein the third charging power is less than the maximum charging power.

8. The device according to claim 7, characterized in that The initial value of the target power supply mode is a default charging mode; the device further includes an interaction device and a microprocessor; the microprocessor is connected to the interaction device and the charging protocol controller respectively; When receiving a first selection instruction from the interaction device, the microprocessor is used to send a first protection notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode to a first protection mode; When receiving a second selection instruction from the interaction device, the microprocessor is used to send a second protection notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode to a second protection mode; When receiving a first cancellation instruction for the first selection instruction from the interaction device, the microprocessor is used to send a first cancellation notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode to a default charging mode; When receiving a second cancellation instruction for the second selection instruction from the interaction device, the microprocessor is used to send a second cancellation notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode as a default charging mode.

9. The device according to claim 8, characterized in that When charging the target device, the charging protocol controller is used to obtain the interface output power of the connector and send it to the microprocessor, and the microprocessor is used to record the duration of the interface output power being less than or equal to the minimum output power within a preset duration; When the duration is greater than the preset duration, the microprocessor is used to send a default power supply notification to the charging protocol controller, and the charging protocol controller is used to set the target power supply mode as the default power supply mode.

10. The device according to claim 8, characterized in that It also includes an interactive feedback device; the microprocessor is connected to the interactive feedback device; When the target power supply mode is a default charging mode, the microprocessor is used to control the interactive feedback device to make a first interactive feedback; When the target power supply mode is the first protection mode, the microprocessor is used to control the interactive feedback device to make a second interactive feedback; When the target power supply mode is the second protection mode, the microprocessor is used to control the interactive feedback device to make a third interactive feedback.

Images