A charging control method and apparatus

Abstract

This disclosure provides a charging control method and apparatus. The charging control method includes: after a powered device and a charging adapter successfully establish a handshake, acquiring the temperature of the charging adapter; when the temperature reaches a preset warning threshold, acquiring the actual power currently output by the charging adapter; wherein the preset warning threshold is less than the temperature protection threshold of the charging adapter; searching for a target power level associated with a first power level currently requested by the powered device from the power levels supported by the charging adapter; determining a required voltage and a required current based on the target power level, the first power level, and the actual power; wherein the power corresponding to the required voltage and the required current is less than the actual power; and controlling the charging adapter to output according to the required voltage and the required current. The charging control method and apparatus provided by this disclosure can minimize the problem of charging interruption due to high temperatures.

Description

Technical Field

[0001] This disclosure relates to the field of charging technology, and in particular to a charging control method and apparatus. Background Technology

[0002] With the development of fast charging technology, charging adapters can provide higher and higher charging power and faster and faster charging speeds. Correspondingly, the heat generation of devices during charging is receiving more and more attention. Summary of the Invention

[0003] This disclosure provides a charging control method and apparatus to address the shortcomings of related technologies.

[0004] According to a first aspect of the present disclosure, a charging control method is provided, the method comprising:

[0005] After the powered device and the charging adapter successfully establish a handshake, the temperature of the charging adapter is obtained;

[0006] When the temperature reaches a preset warning threshold, the actual power output of the charging adapter is obtained; wherein the preset warning threshold is less than the temperature protection threshold of the charging adapter.

[0007] Find the target power level associated with the first power level currently requested by the powered device from the power levels supported by the charging adapter;

[0008] Based on the target power level, the first power level, and the actual power, the required voltage and required current are determined; wherein the power corresponding to the required voltage and the required current is less than the actual power;

[0009] The charging adapter is controlled to output according to the required voltage and the required current.

[0010] According to a second aspect of the present disclosure, a charging control method is provided, the method being applied to a powered device, the method comprising:

[0011] After successfully handshaking with the charging adapter, receive the instruction message transmitted by the charging adapter through the charging protocol;

[0012] When the temperature of the charging adapter reaches a preset warning threshold based on the indication message, the required voltage and required current are redefined; wherein the power corresponding to the required voltage and required current is less than the actual power currently output by the charging adapter;

[0013] The required voltage and required current are transmitted to the charging adapter via a charging protocol to instruct the charging adapter to output according to the required voltage and required current.

[0014] According to a third aspect of the present disclosure, a charging control method is provided, the method being applied to a charging adapter, the method comprising:

[0015] After the powered device and this device successfully handshake, an instruction message is transmitted to the powered device through the charging protocol to instruct the powered device to re-determine the required voltage and required current when the temperature of the charging adapter is determined to be greater than a preset warning threshold based on the instruction message; wherein the power corresponding to the required voltage and the required current is less than the actual power currently output by the charging adapter;

[0016] Receive the required voltage and current returned by the powered device, and output according to the required voltage and current.

[0017] According to a fourth aspect of the embodiments of this disclosure, a charging control device is provided, the device comprising an acquisition module, a search module, a determination module, and a processing module, wherein...

[0018] The acquisition module is used to acquire the temperature of the charging adapter after the powered device and the charging adapter have successfully shaken hands.

[0019] The acquisition module is further configured to acquire the actual power output of the charging adapter when the temperature reaches a preset warning threshold; wherein the preset warning threshold is less than the temperature protection threshold of the charging adapter;

[0020] The search module is used to search for a target power level that is associated with the first power level currently applied for by the powered device from the power levels supported by the charging adapter.

[0021] The determining module is used to determine the required voltage and required current based on the target power level, the first power level, and the actual power; wherein the power corresponding to the required voltage and the required current is less than the actual power;

[0022] The processing module is used to control the charging adapter to output according to the required voltage and the required current.

[0023] According to a fifth aspect of the embodiments of this disclosure, a power receiving device is provided, comprising:

[0024] processor;

[0025] Memory used to store processor-executable instructions;

[0026] The processor is configured to implement the method described in any of the first aspects of this application.

[0027] According to a sixth aspect of the present disclosure, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the method described in any of the first aspects of the present disclosure.

[0028] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0029] As can be seen from the above embodiments, the charging control method and apparatus provided in this disclosure allow the charging adapter and the powered device to transmit instruction messages via a charging protocol. When the powered device determines, based on the instruction message, that the temperature of the charging adapter has reached a preset warning threshold, it can re-determine the required voltage and current. The power corresponding to the determined required voltage and current is less than the actual power currently output by the charging adapter. This allows for timely reduction of the charging adapter's output power when a temperature warning occurs, thereby lowering the charging adapter's temperature and preventing it from reaching the temperature protection threshold as much as possible. This also minimizes the risk of charging interruption due to the temperature reaching the preset temperature protection threshold, thus improving the charging experience.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0032] Figure 1 This is a flowchart of an embodiment of the charging control method provided in this disclosure;

[0033] Figure 2 A flowchart of Embodiment 2 of the charging control method provided in this disclosure;

[0034] Figure 3 A flowchart of Embodiment 3 of the charging control method provided in this disclosure;

[0035] Figure 4 A flowchart of Embodiment 4 of the charging control method provided in this disclosure;

[0036] Figure 5 A flowchart of Embodiment 5 of the charging control method provided in this disclosure;

[0037] Figure 6 A flowchart of Embodiment Six of the charging control method provided in this disclosure;

[0038] Figure 7 A flowchart of Embodiment Seven of the charging control method provided in this disclosure;

[0039] Figure 8 This disclosure illustrates an interaction flowchart between a charging adapter and a powered device according to an exemplary embodiment.

[0040] Figure 9 This is a flowchart illustrating the interaction between another charging adapter and a powered device according to an exemplary embodiment of the present disclosure.

[0041] Figure 10 This is a schematic diagram illustrating the implementation principle of a charging control method according to an exemplary embodiment of the present disclosure;

[0042] Figure 11 This is a schematic diagram illustrating the implementation principle of another charging control method according to an exemplary embodiment of the present disclosure;

[0043] Figure 12 This is a schematic diagram of the structure of a charging control device according to an exemplary embodiment of the present disclosure;

[0044] Figure 13 This is a schematic diagram of the structure of a power receiving device according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0046] In solving the problem of device overheating during charging, the inventors discovered that as charging power increases, the temperature of the charging adapter also rises. To protect the hardware in the charging adapter from damage due to overheating, the charging adapter typically has a preset temperature protection threshold. When the temperature of the adapter exceeds this threshold, it stops charging the connected device and then reconnects to the device to resume charging. While this method protects the hardware, it leads to frequent charging interruptions. Therefore, this disclosure proposes a charging control method and apparatus.

[0047] Figure 1 This is a flowchart of an embodiment of the charging control method provided in this disclosure. Please refer to... Figure 1 The method provided in this embodiment can be applied to a charging adapter or a powered device, and the method may include:

[0048] S101. After the power receiving device and the charging adapter successfully establish a handshake, the temperature of the charging adapter is obtained.

[0049] For details on the specific implementation principles and processes of a successful handshake between the receiving device and the charging adapter, please refer to the descriptions in relevant technologies; they will not be repeated here.

[0050] Specifically, a successful handshake between the receiving device and the charging adapter means that the receiving device successfully requests a power level from the charging adapter through a certain charging protocol. In other words, a successful handshake between the receiving device and the charging adapter means that the receiving device successfully secures a specific power level based on a certain charging protocol.

[0051] It should be noted that the charging adapter can support several fixed power levels. Furthermore, in addition to supporting several fixed power levels, the charging adapter can also support at least one set of expandable power levels. For example, in one embodiment, the charging adapter supports five fixed power levels and two sets of expandable power levels. For ease of explanation, these five fixed power levels are denoted as PD1: 5V, 3A (where 5V is the allowable voltage corresponding to this power level, and 3A is the maximum allowable current corresponding to this power level), PD2: 9V, 3A, PD3: 12V, 3A, PD4: 15V, 3A, and PD5: 20V, 3.25A. The two sets of expandable power levels are denoted as PPS1: 5V-11V, 5A (where 5V-11V is the allowable voltage range corresponding to this power level, and 5A is the maximum allowable current corresponding to this power level), and PPS2: 5V-20V, 3.25A.

[0052] Specifically, the temperature of the charging adapter can be acquired in real time; or the temperature of the charging adapter can be acquired periodically according to a preset cycle. This embodiment does not limit this.

[0053] It should be noted that when the temperature of the charging adapter is periodically acquired according to a preset period, this preset period is set according to actual needs, and its specific value is not limited in this embodiment. For example, in one embodiment, the preset period can be 3 minutes.

[0054] Furthermore, when this method is applied to a powered device, the charging adapter can periodically transmit its own temperature to the powered device via the charging protocol. For example, it can transmit its own temperature to the powered device via the PD charging protocol or a manufacturer-defined charging protocol (in specific implementations, for example, the temperature can be transmitted via the SOP message in the data message of the PD charging protocol, or via the VDM message or the Status message in the extended message of the manufacturer-defined charging protocol).

[0055] S102. When the temperature reaches a preset warning threshold, obtain the actual power output of the charging adapter; wherein the preset warning threshold is less than the temperature protection threshold of the charging adapter.

[0056] It should be noted that the charging adapter will stop charging the device when its own temperature exceeds the temperature protection threshold.

[0057] Specifically, the preset warning threshold is set according to actual needs, and its specific value is not limited in this embodiment. For example, the preset warning threshold can be 2°C lower than the temperature protection threshold of the charging adapter.

[0058] It should be noted that the actual power output of the charging adapter can be characterized by the actual voltage and current output. For example, in one embodiment, the actual power output of the charging adapter is 8.90V and 1.47A (7.11W).

[0059] S103. Find the target power level associated with the first power level currently applied for by the powered device from the power levels supported by the charging adapter.

[0060] It should be noted that when this method is applied to the powered device, the charging adapter can transmit its supported power levels to the powered device through the charging protocol. For example, it can transmit its supported power levels to the powered device through the PDO charging protocol (PDO is used to publish the power output capability of the Source port or the power requirement of the Sink port, and its type can be Source_Capabilities and Sink_Capabilities, respectively).

[0061] Specifically, when the first power level currently requested by the powered device is a fixed power level, the target power level associated with the first power level is all fixed power levels supported by the charging adapter.

[0062] Using the example above, for instance, if the first power level currently requested by the powered device is PD2 (9V, 3A), then the target power levels associated with this power level are PD1 to PD5.

[0063] Furthermore, when the first power level currently requested by the power receiving device is a voltage level among the expandable power levels, the target power level associated with that power level is that expandable power level.

[0064] For example, in one embodiment, the first power level currently requested by the powered device is the (9V, 4A) level in PPS1. At this time, the target power level associated with this power level is PPS1.

[0065] S104. Determine the required voltage and required current based on the target power level, the first power level, and the actual power; wherein the power corresponding to the required voltage and the required current is less than the actual power.

[0066] For example, in one embodiment, the allowable voltage corresponding to the first power level can be used as the required voltage, thereby making the required current less than the current corresponding to the actual power (achieving the purpose of reducing power by reducing current).

[0067] For example, in one embodiment, a lower allowable voltage than the allowable voltage of the first power level can be selected from the allowable voltages of the target power level as the required voltage. Then, the required current is selected by combining the actual power and the maximum allowable current of the power level corresponding to the required voltage (to reduce power by reducing voltage).

[0068] Based on the example above, the actual output power of the charging adapter is currently 8.90V, 1.47A (7.11W), and the target power level is 5 fixed power levels. At this time, the required voltage can be set to 9V and the required current to 1A, or the required voltage can be set to 5V and the required current to 2A, 1.5A, or 1A.

[0069] The specific implementation process of this step will be described in detail in the following specific embodiments, and will not be repeated here.

[0070] S105. Control the charging adapter to output according to the required voltage and the required current.

[0071] Specifically, when this method is applied to a powered device, the powered device can send the required voltage and current to the charging adapter to instruct the charging adapter to output according to the required voltage and current.

[0072] The method provided in this embodiment, after the powered device and the charging adapter successfully establish a handshake, acquires the temperature of the charging adapter. Then, when the temperature reaches a preset warning threshold, it acquires the actual power output of the charging adapter and searches for a target power level associated with the first power level currently requested by the powered device from among the power levels supported by the charging adapter. Based on the target power level, the first power level, and the actual power, it determines the required voltage and current, and controls the charging adapter to output according to the required voltage and current. The preset warning threshold is lower than the temperature protection threshold of the charging adapter, and the power corresponding to the required voltage and current is lower than the actual power. Thus, when a temperature warning occurs, the power output of the charging adapter can be reduced in a timely manner to lower the charging adapter temperature, preventing the charging adapter temperature from reaching the temperature protection threshold as much as possible, and avoiding charging interruption caused by the temperature reaching the preset temperature protection threshold, thereby improving the charging experience.

[0073] Figure 2 This is a flowchart of a second embodiment of the charging control method provided in this disclosure. The method provided in this embodiment is executed by a powered device. Please refer to... Figure 2 The method provided in this embodiment, based on the above embodiment, may include step S103 as follows:

[0074] S201. Select an allowable voltage from the allowable voltages of the target power level as the required voltage; wherein the required voltage is less than or equal to the first allowable voltage of the first power level.

[0075] For example, in one embodiment, the powered device successfully hands over the "9V" level in PPS1 via the PPS protocol. At this time, the target power level is PPS1 (5V-11V). In this step, any voltage can be selected from the following voltage range [5V-9V] as the required voltage. For example, in one embodiment, the required voltage is determined to be 8V.

[0076] For example, in one embodiment, the powered device successfully hands over the "15V" power level to the fixed power level via the PD protocol. At this time, the target power level is PD1 to PD5. In this step, any voltage can be selected from the following permissible voltages (5V, 9V, 15V) as the required voltage. For example, in one embodiment, the required voltage is determined to be 15V.

[0077] S202. Based on the actual power, select a current from a plurality of specified currents corresponding to the second power level as the required current, so that the power corresponding to the required current and the required voltage is less than the actual power; wherein, the second power level is the power level corresponding to the required voltage; the specified current is less than or equal to the maximum allowable current of the second power level.

[0078] It should be noted that the number of specified currents corresponding to the second power level and the specific value of each specified current are set according to actual needs, and are not limited in this embodiment. For example, in one embodiment, starting from the maximum allowable current corresponding to the second power level, a specified current can be set every preset value (where the preset value is set according to actual needs, for example, it can be 0.5A), and the minimum specified current is not lower than the specified value (the specified value is set according to actual needs, for example, the specified value can be 0.5A).

[0079] It should be noted that the number and specific value of the specified current for each fixed power level can be the same or different, and this embodiment does not limit them. For example, in one embodiment, the specified currents corresponding to PD1-PD4 can be 0.5A, 1A, 1.5A, 2A, 2.5A, and 3A, and the specified current corresponding to PD5 can be 0.5A, 1A, 1.5A, 2A, 2.5A, 3A, and 3.25A.

[0080] Furthermore, for each power level in the expandable power settings, the number of specified currents and the specific value of each specified current can be the same. For example, the specified currents corresponding to each power level in PPS1 can be 1A, 2A, 3A, 4A, and 5A.

[0081] Referring to the examples above, for instance, in the first example, the required voltage is determined to be 8V, and its corresponding second power level is PPS1. In this case, the required current can be selected from 1A, 2A, 3A, 4A, and 5A. Further, for instance, in one embodiment, the actual power is 8.75V, 3.03A (26.53W). In this case, considering the power requirement, any current can be selected from 1A, 2A, and 3A as the required current. For example, in one embodiment, the required current is determined to be 2A.

[0082] For example, in the second example above, the required voltage is 15V, and the corresponding second power level (15V, 3A) has specified currents of 0.5A, 1A, 1.5A, 2A, 2.5A, and 3A. In this case, the required current can be selected from 1A, 2A, 3A, 4A, and 5A. Further, for example, in one embodiment, the actual output power is 14.86V, 2.27A (33.74). In this case, considering the power requirement, any current can be selected from 0.5A, 1A, 1.5A, and 2A as the required current. For example, in one embodiment, the required current is determined to be 1A.

[0083] The method provided in this embodiment offers a way to determine the required voltage and current. Through this method, the powered device can directly determine its required voltage and current to control the charging adapter to reduce power, thereby reducing the temperature of the charging adapter. This can minimize the risk of charging interruption caused by the temperature reaching a preset temperature protection threshold, thus improving the charging experience.

[0084] Figure 3 This is a flowchart of Embodiment 3 of the charging control method provided in this disclosure. Please refer to... Figure 3 The method provided in this embodiment, based on the above embodiment, may include step S201 as follows:

[0085] S301. When the current corresponding to the actual power is greater than a preset threshold, the first allowable voltage is determined as the required voltage.

[0086] S302. When the current corresponding to the actual power is less than or equal to the preset threshold, select an allowable voltage smaller than the first allowable voltage from the allowable voltages of the target power level as the required voltage.

[0087] In specific implementation, when selecting a lower permissible voltage than the first permissible voltage from the permissible voltages of the target power level as the required voltage, all permissible voltages lower than the first permissible voltage can be found first, and then any one of the found permissible voltages can be selected as the required voltage. Preferably, in one embodiment, the maximum value among the found permissible voltages can be determined as the required voltage (so as to provide higher charging efficiency or faster charging speed through the required voltage).

[0088] The preset threshold is set according to actual needs. In this embodiment, the specific value of the preset threshold is not limited. For example, the preset threshold is 1A.

[0089] For example, in one embodiment, the actual power output of the charging adapter is currently "19.84V, 3.01A (59.85W)," and the power level requested by the receiving device is "20V, 3.25A." In this case, it is determined that the current corresponding to the actual power (3.01A) is greater than a preset threshold, and therefore, the required voltage is determined to be 20V. Further, when the required voltage is determined to be 20V, based on the power requirement, any current can be selected from 2.5A, 2A, 1.5A, 1A, and 0.5A as the required current.

[0090] For example, in one embodiment, the actual output power of the charging adapter is "14.91V, 1A (14.91W)," and the power level requested by the receiving device is "15V, 3A." In this case, it is determined that the current (1A) corresponding to the actual power is not greater than a preset threshold. Therefore, a voltage is arbitrarily selected from 12V, 9V, and 5V as the required voltage. For example, the required voltage is determined to be 12V. Furthermore, when the required voltage is determined to be 12V, the required current can be determined to be 1A based on the power requirement.

[0091] The method provided in this embodiment uses a first allowable voltage as the required voltage (without reducing the voltage) when the current corresponding to the actual power is greater than a preset threshold, and reduces the power by reducing the current. When the current corresponding to the actual power is less than or equal to the preset threshold (the actual current is already very small), the allowable voltage lower than the first allowable voltage is used as the required voltage, and reduces the power by reducing the voltage. In this way, not only can the charging interruption caused by the overheating of the charging adapter be avoided as much as possible, but the charging speed can also be guaranteed as much as possible (reducing the current should be considered first if possible, and reducing the voltage should be considered only if the current cannot be reduced (if the current is reduced too low, the charging speed will be very slow)).

[0092] Figure 4 This is a flowchart of Embodiment 4 of the charging control method provided in this disclosure. Please refer to... Figure 4 Based on the above embodiments, step S202 may include:

[0093] S401. Based on the actual power, find a candidate current from a plurality of specified currents corresponding to the second power; wherein the power corresponding to the candidate current and the required voltage is less than the actual power.

[0094] S402. Select the largest current from the candidate currents as the required current.

[0095] In practice, after determining the required voltage, for each specified current in the second power level corresponding to the required voltage, it can be determined whether the specified current and the power corresponding to the required voltage are less than the actual power. If they are less than the actual power, the specified current is determined as a candidate current.

[0096] Referring to the examples in Embodiment 3, for instance, in the first example of Embodiment 3, the candidate currents were determined to be 2.5A, 2A, 1.5A, 1A, and 0.5A. In this embodiment, the required current can be determined to be 2.5A.

[0097] The method provided in this embodiment, after determining the required voltage, can combine the power requirements to find a candidate current from a number of specified currents corresponding to the second power corresponding to the required voltage, and then determine the maximum value among the candidate currents as the required current. In this way, charging efficiency can be improved while avoiding charging interruptions.

[0098] Figure 5 This is a flowchart of Embodiment 5 of the charging control method provided in this disclosure. The method provided in this embodiment is executed by a charging adapter. Please refer to... Figure 5 The method provided in this embodiment, based on the above embodiments, may include step S103 as follows:

[0099] S501. Determine a combined power level based on the target power level, the first power level, and the actual power; wherein the allowable voltage of the combined power level is less than or equal to the allowable voltage of the first power level, and the power corresponding to the combined power level is less than the actual power.

[0100] Specifically, when the target power level is a fixed power level, the specific implementation process of this step may include:

[0101] (1) Find the third power level from the target power level where the allowable voltage is less than or equal to the allowable voltage of the first power level.

[0102] For example, in one embodiment, the first power level is "9V, 3A". In this case, the third power level is determined to include PD2 ("9V, 3A") and PD1 ("5V, 3A").

[0103] (2) For each of the third power levels, several candidate power levels are generated based on the allowable voltage and several specified currents corresponding to the third power level; wherein the specified allowable current is less than or equal to the allowable current corresponding to the third power level.

[0104] As mentioned earlier, the number of specified currents corresponding to the third power level and the specific value of each specified current are set according to actual needs. For example, the specified currents corresponding to PD2 are 3A, 2.5A, 2A, 1.5A, 1A, and 0.5A.

[0105] Based on the example above, for PD1, six selectable power levels can be generated: "5V, 3A", "5V, 2.5A", "5V, 2A", "5V, 1.5A", "5V, 1A", and "5V, 0.5A". Similarly, for PD2, six selectable power levels can also be generated: "9V, 3A", "9V, 2.5A", "9V, 2A", "9V, 1.5A", "9V, 1A", and "9V, 0.5A".

[0106] (3) The power level to be selected that is less than the actual power is determined as the combined power level.

[0107] Furthermore, for example, in one embodiment, the actual output power is "8.90V, 1.47A (7.11W)". In this case, the power level with a power of less than 7.11W is selected from the power levels to be selected as the combined power level.

[0108] Based on the example above, here we determine 7 fixed power levels for the combined power settings. These 7 fixed power levels are "5V, 2.5A", "5V, 2A", "5V, 1.5A", "5V, 1A", "5V, 0.5A", "9V, 1A" and "9V, 0.5A".

[0109] Furthermore, when the target power level is a scalable power level, the specific implementation process of this step may include:

[0110] (1) Determine the target voltage based on the first allowable voltage; wherein the target voltage is greater than the minimum allowable voltage corresponding to the expandable power level and less than or equal to the first allowable voltage.

[0111] For example, in one embodiment, the powered device has successfully obtained the 9.40V voltage level in PPS1, and the actual output power of the charging adapter is "9.40V, 4.97A (46.79W)". In this case, as long as the target voltage is less than or greater than 5V and less than or equal to 9.40V, it is acceptable. For example, the target voltage can be set to 9V.

[0112] (2) The minimum allowable voltage and the first allowable voltage are determined as the allowable voltage range corresponding to the combined power level.

[0113] Based on the example above, in this step, the allowable voltage range corresponding to the combined power level is determined to be [5V 9V].

[0114] (3) Determine the target current based on the current corresponding to the actual power; wherein the target current is less than the current corresponding to the actual power.

[0115] Combining the above example, for instance, if the actual power corresponds to a current of 4.97A, then it is sufficient to make the target current less than 4.97A. For example, in one embodiment, the target current is determined to be 4A.

[0116] (4) The target current is determined as the allowable current corresponding to the combined power.

[0117] Based on the example above, the power rating of the combination should be set to "5V-9V, 4A".

[0118] S502. The combined power level is sent to the powered device to instruct the powered device to determine the required voltage and required current based on the combined power level.

[0119] Specifically, when the combined power level is a fixed power level, the powered equipment can directly select any combined power level as the target power level. The allowable voltage of this target power level is then determined as the required voltage, and the required current is determined based on the maximum allowable current of this target power level. For example, the maximum allowable current can be directly determined as the required current.

[0120] S503, Receive the required voltage and required current returned by the power receiving equipment.

[0121] The method provided in this embodiment involves the charging adapter determining a reduced power level when its temperature exceeds a preset warning threshold. This reduced power level is then rebroadcast to the receiving device, allowing the device to determine its required voltage and current based on the power level and output accordingly. This timely reduction of the charging adapter's output power during temperature warnings lowers its temperature, preventing it from reaching the temperature protection threshold and minimizing charging interruptions caused by exceeding the preset threshold, thus improving the charging experience.

[0122] The technical solution of this application will be explained in detail below from the perspective of the interaction between the powered device and the charging adapter:

[0123] Figure 6 This is a flowchart of Embodiment Six of the charging control method provided in this disclosure. The method provided in this embodiment is applied to a powered device. Please refer to... Figure 6 The method provided in this embodiment may include:

[0124] S601. After successfully handshaking with the charging adapter, receive the instruction message transmitted by the charging adapter through the charging protocol.

[0125] Specifically, in one embodiment, the indication message may carry the temperature of the charging adapter. In conjunction with the foregoing description, after a successful handshake between the charging adapter and the powered device, the charging adapter can periodically transmit its own temperature to the powered device via a charging protocol (e.g., via the PD protocol or a manufacturer-defined protocol) according to a preset cycle.

[0126] In another embodiment, the indication message may carry alarm information indicating that the temperature of the charging adapter has reached a preset warning threshold and the combined power level of the charging adapter.

[0127] It should be noted that the combined power level is the power level determined by the charging adapter when it determines that its temperature has reached the preset warning threshold. This is based on the first power level currently requested by the powered device, the target power level associated with the first power level among the power levels supported by the device, and the actual power output of the device. (For the specific determination principle and method of the combined power level, please refer to the description in the previous embodiments, which will not be repeated here.)

[0128] Furthermore, the allowable voltage of the combined power level is less than or equal to the first allowable voltage of the first power level, and the power corresponding to the combined power level is less than the actual power currently output by the charging adapter.

[0129] S602. When it is determined based on the indication message that the temperature of the charging adapter is greater than a preset warning threshold, the required voltage and required current are re-determined; wherein the power corresponding to the required voltage and the required current is less than the actual power currently output by the charging adapter.

[0130] Referring to the preceding description, when indicating the temperature of the charging adapter in the message, the temperature can be compared with a preset warning threshold to determine whether the temperature has reached the preset warning threshold.

[0131] It should be noted that the preset warning threshold of the charging adapter can be transmitted to the powered device through the charging protocol after the charging adapter and the powered device have successfully shaken hands.

[0132] At this point, the steps to redetermine the required voltage and current may include:

[0133] (1) Find the target power level associated with the first power level currently applied for by the power receiving device from the power levels supported by the charging adapter.

[0134] (2) Determine the required voltage and required current based on the target power level, the first power level and the actual power.

[0135] The specific implementation principles and processes of steps (1) and (2) can be found in the descriptions in the previous embodiments, and will not be repeated here.

[0136] In addition, when the instruction message carries alarm information, the temperature of the charging adapter can be determined based on the alarm information to have reached a preset warning threshold.

[0137] Furthermore, at this point, the required voltage and current can be directly reselected based on the combined power level (the specific implementation process and principle of this step can be found in the description in the previous embodiments, and will not be repeated here).

[0138] S603. The required voltage and the required current are transmitted to the charging adapter via a charging protocol to instruct the charging adapter to output according to the required voltage and the required current.

[0139] The method provided in this embodiment involves the charging adapter and the powered device transmitting indication messages via a charging protocol. When the powered device determines, based on the indication message, that the charging adapter's temperature has reached a preset warning threshold, it can re-determine the required voltage and current. The power corresponding to the determined required voltage and current is less than the actual power currently output by the charging adapter. This allows for timely reduction of the charging adapter's output power when a temperature warning occurs, thereby lowering the charging adapter's temperature and preventing it from reaching the temperature protection threshold. This minimizes the risk of charging interruption due to reaching the preset temperature protection threshold, thus improving the charging experience.

[0140] Figure 7 This is a flowchart of Embodiment Seven of the charging control method provided in this disclosure. The method provided in this embodiment is applied to a charging adapter, and the method includes:

[0141] S701. After the powered device and this device successfully handshake, an instruction message is transmitted to the powered device through the charging protocol to instruct the powered device to re-determine the required voltage and required current when the temperature of the charging adapter is determined to be greater than a preset warning threshold based on the instruction message; wherein the power corresponding to the required voltage and the required current is less than the actual power currently output by the charging adapter.

[0142] Specifically, in one embodiment, the device periodically transmits its own temperature as an indication message to the powered device according to a preset cycle.

[0143] In another embodiment, the specific implementation process of this step may include:

[0144] (1) When the temperature of the device reaches the preset warning threshold, a combined power level is determined based on the target power level, the first power level, and the actual power output of the device. The allowable voltage of the combined power level is less than or equal to the first allowable voltage of the first power level, and the power corresponding to the combined power level is less than the actual power. The first power level is the power level currently applied for by the device. The target power level is the power level associated with the first power level among the power levels supported by the device.

[0145] For details on the specific implementation principles and processes of this step, please refer to the descriptions in the previous embodiments, which will not be repeated here.

[0146] (2) Construct an indication message using the alarm information indicating that the temperature has reached the preset warning threshold and the combined power level, and transmit the indication message to the powered device.

[0147] It should be noted that the specific implementation principle and process of re-determining the required voltage and current of the power receiving equipment can be found in the description in the previous embodiments, and will not be repeated here.

[0148] S702. Receive the required voltage and required current returned by the powered device, and output according to the required voltage and required current.

[0149] Specifically, the receiving device can transmit the required voltage and current to the charging adapter through the charging protocol.

[0150] The method provided in this embodiment involves the charging adapter and the powered device transmitting indication messages via a charging protocol. When the powered device determines, based on the indication message, that the charging adapter's temperature has reached a preset warning threshold, it can re-determine the required voltage and current. The power corresponding to the determined required voltage and current is less than the actual power currently output by the charging adapter. This allows for timely reduction of the charging adapter's output power when a temperature warning occurs, thereby lowering the charging adapter's temperature and preventing it from reaching the temperature protection threshold. This minimizes the risk of charging interruption due to reaching the preset temperature protection threshold, thus improving the charging experience.

[0151] Figure 8 This is a flowchart illustrating the interaction between a charging adapter and a powered device according to an exemplary embodiment of this disclosure. Please refer to... Figure 8 The method provided in this embodiment may include:

[0152] S801. After successfully shaking hands with the powered device, the charging adapter periodically transmits its own temperature to the powered device through the charging protocol.

[0153] S802. When the power receiving device determines that the temperature of the charging adapter has reached a preset warning threshold, it sends a request message to the charging adapter to re-request a power level.

[0154] S803, The charging adapter transmits the power level it supports to the powered device through the charging protocol.

[0155] S804. The powered device searches for a target power level associated with the first power level currently applied for by the powered device from the power levels supported by the charging adapter.

[0156] S805. The power receiving equipment determines the required voltage and required current based on the target power level, the first power level, and the actual power; wherein the power corresponding to the required voltage and the required current is less than the actual power.

[0157] Referring to the preceding description, the receiving device can reduce its charging power. For example, it can reduce the required current at the same voltage level (i.e., the required voltage is equal to the allowable voltage corresponding to the currently applied first power level), or directly select a lower power level (i.e., the required voltage is less than the allowable voltage corresponding to the currently applied first power level).

[0158] S806, The power receiving device transmits the required voltage and the required current to the charging adapter.

[0159] S807, The charging adapter outputs according to the required voltage and the required current.

[0160] The specific implementation principles and processes of steps S801 to S807 can be found in the descriptions in the previous embodiments, and will not be repeated here.

[0161] Figure 9 This is a flowchart illustrating the interaction between another charging adapter and a powered device according to an exemplary embodiment of this disclosure. Please refer to... Figure 9 The method provided in this embodiment may include:

[0162] S901. After successfully establishing a handshake with the powered device, the charging adapter periodically checks whether its temperature has reached a preset warning threshold.

[0163] S902. When the charging adapter determines that its temperature has reached a preset warning threshold, it determines a combined power level based on the target power level, the first power level, and the actual power currently output by the device. The allowable voltage of the combined power level is less than or equal to the first allowable voltage of the first power level, and the power corresponding to the combined power level is less than the actual power. The first power level is the power level currently requested by the powered device. The target power level is the power level associated with the first power level among the power levels supported by the device.

[0164] S903, the charging adapter uses an alarm message indicating that the temperature has reached a preset warning threshold and the combined power level to construct an indication message.

[0165] S904, The charging adapter transmits the instruction message to the powered device.

[0166] S905. When the power receiving device determines, based on the indication message, that the temperature of the charging adapter has reached a preset warning threshold, it reselects the required voltage and current based on the combined power level.

[0167] S906, The power receiving device transmits the required voltage and the required current to the charging adapter.

[0168] S907, The charging adapter outputs according to the required voltage and the required current.

[0169] exist Figure 9 In the illustrated embodiment, when the adapter determines that its temperature has reached a preset warning threshold, it actively broadcasts a reduced power level (i.e., the combined power level mentioned above). The powered device then determines the required voltage and current based on this reduced power level. The specific principles and methods for determining the combined power level can be found in the descriptions of the preceding embodiments, and will not be repeated here.

[0170] For details on the specific implementation principles and processes of each of the above steps, please refer to the descriptions in the previous embodiments, which will not be repeated here.

[0171] The following two more specific embodiments are given to illustrate the technical solution of this disclosure in detail:

[0172] Figure 10 This is a schematic diagram illustrating the implementation principle of a charging control method according to an exemplary embodiment of this disclosure. Please refer to... Figure 10 The charging adapter passes through Figure 10After successfully establishing a handshake with the receiving device, the device transmits its temperature to the receiving device via a manufacturer-defined protocol. Furthermore, if the receiving device determines that the charging adapter's temperature exceeds a preset warning threshold, it can re-request a power level from the charging adapter via the charging protocol. Based on this request, the charging adapter rebroadcasts its supported power levels. The receiving device selects a lower power level (reduced voltage) or a lower current level (no voltage reduction, reduced current) from the charging adapter (see previous description, i.e., the selected required current and voltage correspond to a power output less than the current actual output power). Upon receiving the message, the charging adapter adjusts its output (according to the required current and voltage), and the receiving device receives the reduced power output. This minimizes the risk of overheating and charging interruptions.

[0173] Figure 11 This is a schematic diagram illustrating the implementation principle of a charging control method according to an exemplary embodiment of this disclosure. Please refer to... Figure 11 The charging adapter passes through Figure 11 After successfully shaking hands with the powered device using the method shown ( Figure 11 Taking APDO as an example (if it's PDO, there's no second power adjustment process), if the charging adapter detects that its temperature has reached a preset warning threshold, it will reduce its power. Specifically, the charging adapter will rebroadcast the reduced power level's primary power supply capability (PDO) to the powered device. The powered device will then select its required power (determining the required voltage and current) based on the reduced power level's primary power supply capability sent by the charging adapter. Upon receiving the message, the charging adapter adjusts its output (outputting according to the required current and voltage), and the powered device receives the reduced power output. This minimizes the risk of overheating and charging interruptions.

[0174] Corresponding to the aforementioned embodiments of the charging control method, this disclosure also provides embodiments of the charging control device.

[0175] Figure 12 This is a schematic diagram illustrating the structure of a charging control device according to an exemplary embodiment of the present disclosure. Please refer to... Figure 12 The device includes an acquisition module 1010, a search module 1020, a determination module 1030, and a processing module 1040, wherein...

[0176] The acquisition module 1010 is used to acquire the temperature of the charging adapter after the powered device and the charging adapter have successfully shaken hands.

[0177] The acquisition module 1010 is further configured to acquire the actual power currently output by the charging adapter when the temperature reaches a preset warning threshold; wherein the preset warning threshold is less than the temperature protection threshold of the charging adapter.

[0178] The search module 1020 is used to search for a target power level that is associated with the first power level currently applied for by the powered device from the power levels supported by the charging adapter.

[0179] The determining module 1030 is used to determine the required voltage and required current based on the target power level, the first power level, and the actual power; wherein the power corresponding to the required voltage and the required current is less than the actual power;

[0180] The processing module 1040 is used to control the charging adapter to output according to the required voltage and the required current.

[0181] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments of the relevant methods, and will not be elaborated upon here.

[0182] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this disclosure according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0183] Embodiments of this disclosure also provide a power receiving device, comprising:

[0184] processor;

[0185] Memory used to store processor-executable instructions;

[0186] The processor is configured to implement the method described in any of the above embodiments.

[0187] Embodiments of this disclosure also provide a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the steps described in any of the above embodiments.

[0188] Figure 13 This is a schematic diagram illustrating the structure of a power receiving device according to an exemplary embodiment of the present disclosure. For example, the power receiving device 1100 may be a mobile phone, a digital broadcasting terminal, a messaging device, a tablet device, etc.

[0189] Reference Figure 11The powered device 1100 may include one or more of the following components: a processing component 1102, a memory 1104, a power supply component 1106, a multimedia component 1108, an audio component 1110, an input / output (I / O) interface 1112, a sensor component 1114, and a communication component 1116.

[0190] Processing component 1102 typically controls the overall operation of powered device 1100, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 1102 may include one or more processors 1120 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 1102 may include one or more modules to facilitate interaction between processing component 1102 and other components. For example, processing component 1102 may include a multimedia module to facilitate interaction between multimedia component 1108 and processing component 1102.

[0191] Memory 1104 is configured to store various types of data to support the operation of powered device 1100. Examples of such data include instructions for any application or method operating on powered device 1100, contact data, phonebook data, messages, pictures, videos, etc. Memory 1104 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0192] Power supply component 1106 provides power to various components of powered device 1100. Power supply component 1106 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to powered device 1100.

[0193] The multimedia component 1108 includes a screen that provides an output interface between the powered device 1100 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 1108 includes a front-facing camera and / or a rear-facing camera. When the powered device 1100 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0194] Audio component 1110 is configured to output and / or input audio signals. For example, audio component 1110 includes a microphone (MIC) configured to receive external audio signals when the powered device 1100 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 1104 or transmitted via communication component 1116. In some embodiments, audio component 1110 also includes a speaker for outputting audio signals.

[0195] I / O interface 1112 provides an interface between processing component 1102 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0196] Sensor assembly 1114 includes one or more sensors for providing status assessments of various aspects of the powered device 1100. For example, sensor assembly 1114 may detect the on / off state of the powered device 1100, the relative positioning of components such as the display and keypad of the powered device 1100, changes in position of the powered device 1100 or a component of the powered device 1100, the presence or absence of user contact with the powered device 1100, the orientation or acceleration / deceleration of the powered device 1100, and temperature changes of the powered device 1100. Sensor assembly 1114 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1114 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 1114 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0197] Communication component 1116 is configured to facilitate wired or wireless communication between powered device 1100 and other devices. Powered device 1100 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, 4G LTE, 5G NR, or combinations thereof. In one exemplary embodiment, communication component 1116 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 1116 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0198] In an exemplary embodiment, the powered device 1100 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described in any of the above embodiments.

[0199] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 1104 including instructions, which can be executed by a processor 1120 of a powered device 1100 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0200] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0201] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A charging control method, characterized in that, The method includes: After the powered device and the charging adapter successfully establish a handshake, the temperature of the charging adapter is obtained; When the temperature reaches a preset warning threshold, the actual power output of the charging adapter is obtained; wherein the preset warning threshold is less than the temperature protection threshold of the charging adapter. Find the target power level associated with the first power level currently requested by the powered device from the power levels supported by the charging adapter; Based on the target power level, the first power level, and the actual power, the required voltage and required current are determined; wherein the power corresponding to the required voltage and the required current is less than the actual power; Control the charging adapter to output according to the required voltage and the required current; Wherein, when the method is applied to the powered equipment, determining the required voltage and required current based on the target power level, the first power level, and the actual power includes: Select one allowable voltage from the allowable voltages of the target power level as the required voltage; wherein the required voltage is less than or equal to the first allowable voltage of the first power level; Based on the actual power, a current is selected from a plurality of specified currents corresponding to the second power level as the required current, so that the power corresponding to the required current and the required voltage is less than the actual power; wherein, the second power level is the power level corresponding to the required voltage; the specified current is less than or equal to the maximum allowable current of the second power level; When the method is applied to the charging adapter, determining the required voltage and required current based on the target power level, the first power level, and the actual power includes: A combined power level is determined based on the target power level, the first power level, and the actual power; wherein the allowable voltage of the combined power level is less than or equal to the first allowable voltage of the first power level, and the power corresponding to the combined power level is less than the actual power. The combined power level is sent to the powered device to instruct the powered device to determine the required voltage and required current based on the combined power level; Receive the required voltage and current returned by the powered device.

2. The method according to claim 1, characterized in that, Selecting an allowable voltage from the allowable voltages corresponding to the target power level as the required voltage includes: When the current corresponding to the actual power is greater than a preset threshold, the first allowable voltage is determined as the required voltage; When the current corresponding to the actual power is less than or equal to the preset threshold, a lower allowable voltage than the first allowable voltage is selected from the allowable voltages of the target power level as the required voltage.

3. The method according to claim 1 or 2, characterized in that, Selecting a current from a plurality of specified currents corresponding to the second power level as the required current includes: Based on the actual power, a candidate current is selected from a plurality of specified currents corresponding to the second power; wherein the power corresponding to the candidate current and the required voltage is less than the actual power; The largest current is selected from the candidate currents as the required current.

4. The method according to claim 1, characterized in that, The target power level is a fixed power level; determining the combined power level based on the target power level, the first power level, and the actual power includes: Find the third power level from the target power levels that allows a voltage less than or equal to the first allowable voltage; For each of the third power levels, several candidate power levels are generated based on the allowable voltage corresponding to the third power level and several specified currents; wherein, the specified current is less than or equal to the maximum allowable current corresponding to the third power level; The power levels that are less than the actual power are selected as the combined power levels.

5. The method according to claim 1, characterized in that, The target power level is an expandable power level; determining the combined power level based on the target power level, the first power level, and the actual power includes: Based on the first allowable voltage, a target voltage is determined; wherein the target voltage is greater than the minimum allowable voltage corresponding to the scalable power level and less than or equal to the first allowable voltage; The minimum allowable voltage and the first allowable voltage are determined as the allowable voltage range corresponding to the combined power level; A target current is determined based on the current corresponding to the actual power; wherein the target current is less than the current corresponding to the actual power. The target current is determined as the allowable current corresponding to the combined power.

6. A charging control method, characterized in that, The method is applied to a power receiving device, and the method includes: After successfully handshaking with the charging adapter, receive the instruction message transmitted by the charging adapter through the charging protocol; When the temperature of the charging adapter reaches a preset warning threshold based on the indication message, the required voltage and required current are redefined; wherein the power corresponding to the required voltage and required current is less than the actual power currently output by the charging adapter; The required voltage and required current are transmitted to the charging adapter via a charging protocol to instruct the charging adapter to output according to the required voltage and required current.

7. The method according to claim 6, characterized in that, The indication message carries the temperature of the charging adapter; the re-determination of the required voltage and current includes: Find the target power level associated with the first power level currently requested by the powered device from the power levels supported by the charging adapter; The required voltage and required current are determined based on the target power level, the first power level, and the actual power.

8. The method according to claim 6, characterized in that, The indication message carries alarm information indicating that the temperature of the charging adapter has reached a preset warning threshold and the combined power level of the charging adapter; wherein, the allowable voltage of the combined power level is less than or equal to the first allowable voltage of the first power level currently requested by the powered device, and the power corresponding to the combined power level is less than the actual power currently output by the charging adapter; the re-determination of the required voltage and required current includes: Based on the combined power level, the required voltage and current are reselected.

9. A charging control method, characterized in that, The method is applied to a charging adapter, and the method includes: After the powered device and this device successfully handshake, an instruction message is transmitted to the powered device through the charging protocol to instruct the powered device to re-determine the required voltage and required current when the temperature of the charging adapter is determined to be greater than a preset warning threshold based on the instruction message; wherein the power corresponding to the required voltage and the required current is less than the actual power currently output by the charging adapter; Receive the required voltage and current returned by the powered device, and output according to the required voltage and current; The transmission of indication messages to the powered device via the charging protocol includes: When the device determines that its temperature has reached a preset warning threshold, a combined power level is determined based on the target power level, the first power level, and the actual power output of the device. The allowable voltage of the combined power level is less than or equal to the first allowable voltage of the first power level, and the power corresponding to the combined power level is less than the actual power. The first power level is the power level currently requested by the device. The target power level is the power level associated with the first power level among the power levels supported by the device. An indication message is constructed using alarm information indicating that the temperature of the device has reached a preset warning threshold and the combined power level, and the indication message is transmitted to the powered device.

10. The method according to claim 9, characterized in that, The transmission of indication messages to the powered device via the charging protocol includes: According to a preset cycle, it periodically transmits its own temperature as an indication message to the powered device.

11. A charging control device, characterized in that, The device includes an acquisition module, a search module, a determination module, and a processing module, wherein, The acquisition module is used to acquire the temperature of the charging adapter after the powered device and the charging adapter have successfully shaken hands. The acquisition module is further configured to acquire the actual power output of the charging adapter when the temperature reaches a preset warning threshold; wherein the preset warning threshold is less than the temperature protection threshold of the charging adapter; The search module is used to search for a target power level that is associated with the first power level currently applied for by the powered device from the power levels supported by the charging adapter. The determining module is used to determine the required voltage and required current based on the target power level, the first power level, and the actual power; wherein the power corresponding to the required voltage and the required current is less than the actual power; The processing module is used to control the charging adapter to output according to the required voltage and the required current; Wherein, when the device is applied to the power receiving equipment, the acquisition module is specifically used for: Select one allowable voltage from the allowable voltages of the target power level as the required voltage; wherein the required voltage is less than or equal to the first allowable voltage of the first power level; Based on the actual power, a current is selected from a plurality of specified currents corresponding to the second power level as the required current, so that the power corresponding to the required current and the required voltage is less than the actual power; wherein, the second power level is the power level corresponding to the required voltage; the specified current is less than or equal to the maximum allowable current of the second power level; When the device is applied to the charging adapter, the acquisition module is specifically used for: A combined power level is determined based on the target power level, the first power level, and the actual power; wherein the allowable voltage of the combined power level is less than or equal to the first allowable voltage of the first power level, and the power corresponding to the combined power level is less than the actual power. The combined power level is sent to the powered device to instruct the powered device to determine the required voltage and required current based on the combined power level; Receive the required voltage and current returned by the powered device.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method of any one of claims 1 to 5.

13. A power receiving device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to implement the method of any one of claims 1 to 4.

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