CN114614573A

CN114614573A - Charging control method, charging control device, and storage medium

Info

Publication number: CN114614573A
Application number: CN202011451622.8A
Authority: CN
Inventors: 薛一博
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2022-06-10

Abstract

The present disclosure relates to a charge control method, a charge control device, and a storage medium. The charging control method is applied to a terminal, the terminal is included in a wireless charging circuit, a plurality of wireless charging receiving chips which are connected in parallel are configured in the wireless charging circuit, and the charging control method comprises the following steps: respectively monitoring the temperatures of the plurality of wireless charging receiving chips; in response to determining that there is a wireless charging receiving chip of the plurality of wireless charging receiving chips having a temperature greater than a temperature threshold, adjusting a charging current of the terminal. Through this disclosed embodiment, through in the wireless charging circuit who disposes a plurality of wireless receiving chip that charge that connect in parallel, monitor a plurality of wireless receiving chip's that charge temperature respectively, when confirming that there is the wireless receiving chip that charges that the temperature is greater than the temperature threshold value among a plurality of wireless receiving chip that charge, the adjustment charging current guarantees the charging process, and wireless receiving chip is in reasonable temperature range to make wireless charging more reliable, safer.

Description

Charging control method, charging control device, and storage medium

Technical Field

The present disclosure relates to the field of charging technologies, and in particular, to a charging control method, a charging control apparatus, and a storage medium.

Background

With the development of the technology, a wireless charging technology for supplying power to a terminal in a wireless manner is increasingly emerging. The wireless charging device is characterized in that a receiving coil is arranged in the terminal, a transmitting coil is arranged in the wireless charging device, the transmitting coil transmits electromagnetic signals in a wireless mode, the receiving coil in the terminal receives the electromagnetic signals and converts the electromagnetic signals into electric signals, and wireless charging is achieved.

During wireless charging, the battery temperature will gradually rise, and the terminal temperature will also rise. The battery can be damaged when the battery is in a high-temperature state for a long time, and the service life of the battery is influenced

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a charge control method, a charge control device, and a storage medium.

According to an aspect of the embodiments of the present disclosure, a charging control method is provided, which is applied to a terminal, where the terminal is included in a wireless charging circuit, and a plurality of wireless charging receiving chips connected in parallel are configured in the wireless charging circuit, where the charging control method includes: respectively monitoring the temperatures of the plurality of wireless charging receiving chips; and adjusting the charging current of the terminal in response to determining that the wireless charging receiving chip with the temperature larger than the temperature threshold exists in the plurality of wireless charging receiving chips.

In one embodiment, the adjusting the charging current in the wireless charging circuit in response to determining that there is a wireless charging receiving chip with a temperature greater than a temperature threshold in the plurality of wireless charging receiving chips comprises: in response to determining that there is a wireless charging receiving chip of the plurality of wireless charging receiving chips having a temperature greater than a first temperature threshold and less than a second temperature threshold, reducing a charging current in the wireless charging circuit.

In one embodiment, the adjusting the charging current in the wireless charging circuit in response to determining that there is a wireless charging receiving chip with a temperature greater than a temperature threshold in the plurality of wireless charging receiving chips comprises: and stopping charging the terminal in response to determining that the wireless charging receiving chips with the temperature greater than a second temperature threshold exist in the plurality of wireless charging receiving chips.

In an embodiment, the stopping of charging the terminal includes: and sending a charging cut-off packet to the wireless charging transmitting chip through the wireless charging receiving chip.

In one embodiment, the charge control method further includes: monitoring the current complete machine temperature of the terminal; and in response to the current complete machine temperature being greater than a third temperature threshold, adjusting the charging current of the terminal based on the current complete machine temperature.

In an embodiment, the complete machine temperature is determined based on the temperature of each temperature measuring point of the first number of temperature measuring points of the terminal, and different complete machine temperatures and charging currents have corresponding relations; adjusting the charging current of the terminal based on the current overall temperature, including: and determining a charging current matched with the current complete machine temperature based on the corresponding relation between the complete machine temperature and the charging current, and charging the terminal based on the charging current.

According to another aspect of the embodiments of the present disclosure, there is provided a charging control apparatus applied to a terminal, where the terminal is included in a wireless charging circuit, and a plurality of wireless charging receiving chips connected in parallel are configured in the wireless charging circuit, the charging control apparatus including: the monitoring module is used for respectively monitoring the temperatures of the plurality of wireless charging receiving chips; and the adjusting module is used for determining that the wireless charging receiving chips with the temperature larger than the temperature threshold exist in the plurality of wireless charging receiving chips and adjusting the charging current of the terminal.

In an embodiment, the adjusting module determines that there is a wireless charging receiving chip with a temperature greater than a temperature threshold in the plurality of wireless charging receiving chips, and adjusts the charging current in the wireless charging circuit as follows: in response to determining that there is a wireless charging receiving chip of the plurality of wireless charging receiving chips having a temperature greater than a first temperature threshold and less than a second temperature threshold, reducing a charging current in the wireless charging circuit.

In an embodiment, the adjusting module determines that there is a wireless charging receiving chip with a temperature greater than a temperature threshold in the plurality of wireless charging receiving chips, and adjusts the charging current in the wireless charging circuit as follows: and stopping charging the terminal in response to determining that the wireless charging receiving chips with the temperature greater than a second temperature threshold exist in the plurality of wireless charging receiving chips.

In an embodiment, the adjusting module stops charging the terminal in the following manner: and sending a charging cut-off packet to the wireless charging transmitting chip through the wireless charging receiving chip.

In one embodiment, the monitoring module is further configured to: monitoring the current complete machine temperature of the terminal; the adjusting module is further configured to adjust the charging current of the terminal based on the current complete machine temperature when the current complete machine temperature is greater than a third temperature threshold.

In an embodiment, the complete machine temperature is determined based on the temperature of each temperature measuring point of the first number of temperature measuring points of the terminal, and different complete machine temperatures and charging currents have corresponding relations; the adjusting module adjusts the charging current of the terminal based on the current complete machine temperature in the following mode: and determining a charging current matched with the current complete machine temperature based on the corresponding relation between the complete machine temperature and the charging current, and charging the terminal based on the charging current.

According to still another aspect of the embodiments of the present disclosure, there is provided a charge control device including: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: executing the charge control method of any one of the preceding claims.

According to yet another aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having instructions stored thereon, which, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the charging control method of any one of the preceding claims.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the temperature of the wireless charging receiving chips is monitored in the wireless charging circuit provided with the plurality of wireless charging receiving chips connected in parallel, when the wireless charging receiving chips with the temperatures larger than the temperature threshold value exist in the plurality of wireless charging receiving chips, the charging current is adjusted, the charging process is guaranteed, the wireless charging process is optimized by the wireless receiving chips within a reasonable temperature range, and therefore the wireless charging is safer and more reliable.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

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

Fig. 1 is a diagram illustrating a charge control circuit according to an exemplary embodiment of the present disclosure.

Fig. 2 is a flowchart illustrating a charging control method according to an exemplary embodiment of the present disclosure.

Fig. 3 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure.

Fig. 4 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure.

Fig. 5 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure.

Fig. 6 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure.

Fig. 7 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure.

Fig. 8 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure.

Fig. 9 is a block diagram illustrating a charge control device according to an exemplary embodiment of the present disclosure.

Fig. 10 is a block diagram illustrating an apparatus for charge control according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The wireless charging technology for providing power for the terminal in a wireless mode is increasingly popular, and the application of the wireless charging technology is more and more extensive due to the convenience of wireless charging. Currently, three major alliances, namely Alliance for Wireless Power (A4WP), Power matrices Alliance (PAM) and Wireless PowerConsortium (WPC), are dedicated to the development and standardization of Wireless charging technology. The Qi standard is a wireless charging standard proposed by WPC, and the most mainstream electromagnetic induction type charging technology at present is adopted. The wireless charger is generally a device for charging by utilizing the principle of electromagnetic induction, the principle of the wireless charger is similar to that of a transformer, a receiving coil is arranged in a terminal, a transmitting coil is arranged in the wireless charging device, the transmitting coil transmits electromagnetic signals in a wireless mode, the receiving coil in the terminal receives the electromagnetic signals and converts the electromagnetic signals into electric signals, and therefore the terminal is charged and energy guarantee is provided.

In the wireless charging process, due to the existence of the coil resistor, the battery temperature gradually rises along with the charging, and the terminal temperature also rises along with the battery temperature. In addition, in the application of the current wireless charging to the mobile terminal, along with the increasing power of the wireless charging, the heat generation of the battery under the high-power charging condition is more obvious. The mobile terminal temperature is too high, and the battery is in a high-temperature state for a long time, so that the situations of safety risk, system error caused by overheating of the mobile terminal, damage to the battery or a coil and the like exist, elements of the wireless charger can be damaged, the service life of the terminal battery is influenced, and even the battery is damaged, so that the user experience is influenced.

Therefore, the charging control method provided by the disclosure monitors the temperatures of the plurality of wireless charging receiving chips in a wireless charging circuit configured with the plurality of wireless charging receiving chips connected in parallel, and adjusts the charging current when the wireless charging receiving chips with the temperatures larger than the temperature threshold value exist in the plurality of wireless charging receiving chips, so that the wireless charging is more reliable and safer as the wireless receiving chips are within a reasonable temperature range in the charging process.

Fig. 1 is a circuit diagram illustrating a charging control circuit according to an exemplary embodiment of the disclosure, as shown in fig. 1, when a wireless charging system has a plurality of wireless charging receiving chips, each wireless charging receiving chip is associated with a coil, and each wireless charging receiving chip is provided with a temperature sensor for acquiring a temperature of the wireless charging receiving chip. In the charging circuit, when a plurality of wireless charging receiving chips are connected in parallel, the current of each wireless charging receiving chip is not completely consistent, and different currents cause different temperatures of each wireless charging receiving chip. If the temperature of one of the chips is too high, the chip with the too high temperature is damaged. The temperature of each wireless charging receiving chip in the plurality of wireless charging receiving chips is monitored respectively, and the charging current of the terminal is controlled according to the temperature. And each wireless receiving chip is ensured to be in a reasonable temperature range in the charging process, so that the wireless charging process of the terminal is safer.

Fig. 2 is a flowchart illustrating a charging control method according to an exemplary embodiment of the present disclosure, the charging control method being used in a terminal. The terminal may be, for example, a smart phone, a tablet computer, a wearable device, a PC, or the like, and the device type of the charging control method applied in the embodiment of the present disclosure is not limited. The terminal is included in the wireless charging circuit, and a plurality of wireless receiving chips that charge that are parallelly connected are configured in the wireless charging circuit. Referring to fig. 2, the charging control method includes the following steps.

In step S101, the temperatures of the plurality of wireless charging reception chips are monitored, respectively.

In step S102, in response to determining that there is a wireless charging receiving chip with a temperature greater than a temperature threshold among the plurality of wireless charging receiving chips, a charging current of the terminal is adjusted.

In the embodiment of the disclosure, a plurality of wireless charging receiving chips connected in parallel are configured in the wireless charging circuit, and each wireless charging receiving chip is provided with a temperature sensor for respectively monitoring the temperature of the plurality of wireless charging receiving chips.

The temperature threshold value is used for the charging process, and the temperature of the wireless charging receiving chip is limited, so that adverse effects on the terminal caused by overheating are avoided, and meanwhile, the charging efficiency can be guaranteed according to the actual state. The temperature threshold may be preset, and in an embodiment, the temperature threshold may be a range, that is, an upper limit and a lower limit, and when the current terminal temperature is greater than or equal to the upper limit, it is determined that the current terminal temperature is greater than or equal to the temperature threshold, and when the current terminal temperature is lower than the lower limit, it is determined that the current terminal temperature is less than the temperature threshold; and if the current terminal temperature is smaller than the upper limit value and larger than or equal to the lower limit value, the adjustment is not carried out, so that frequent adjustment caused by oscillation of the temperature near the temperature threshold value is avoided.

The temperature sensors monitor the temperatures of the wireless charging receiving chips respectively, the wireless charging receiving chips with the temperatures larger than the temperature threshold value are determined to exist in the wireless charging receiving chips, and the charging current of the terminal is adjusted according to the current temperature so as to reduce the temperature and ensure the use safety.

According to the embodiment of the disclosure, the temperature of the plurality of wireless charging receiving chips is respectively monitored in the wireless charging circuit configured with the plurality of wireless charging receiving chips connected in parallel, and when the wireless charging receiving chips with the temperature higher than the temperature threshold value exist in the plurality of wireless charging receiving chips, the charging current is adjusted, so that in the charging process, the wireless charging process is optimized by the wireless receiving chips within a reasonable temperature range, and the wireless charging is safer and more reliable.

Fig. 3 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure. As shown in fig. 3, the charge control method includes the following steps.

In step S201, the temperatures of the plurality of wireless charging reception chips are respectively monitored.

In step S202, in response to determining that there is a wireless charging receiving chip with a temperature greater than a first temperature threshold and less than a second temperature threshold among the plurality of wireless charging receiving chips, a charging current in the wireless charging circuit is reduced.

In the embodiment of the disclosure, a plurality of temperature sensors are arranged in a wireless charging circuit configured with a plurality of wireless charging receiving chips connected in parallel, and the temperature of the plurality of wireless charging receiving chips is respectively monitored.

The temperature of a plurality of wireless receiving chip that charges is monitored respectively, there is the wireless receiving chip that charges that the temperature is greater than first temperature threshold value and is less than the second temperature threshold value, and wherein, first temperature threshold value is less than the second temperature threshold value, reduces the charging current in the wireless charging circuit to it guarantees safe in utilizationly to reduce wireless receiving chip temperature that charges.

For example, the first temperature threshold is set to 95 degrees celsius and the second temperature threshold is set to 110 degrees celsius in advance, in the wireless charging process, the temperatures of the plurality of wireless charging receiving chips are monitored, and it is determined that one of the wireless charging receiving chips is 98 degrees celsius, that is, when it is determined that the temperature of the wireless charging receiving chip is greater than the first temperature threshold and less than the second temperature threshold, the charging current in the wireless charging circuit is reduced. In the charging circuit, when a plurality of wireless charging receiving chips are connected in parallel, the current of each wireless charging receiving chip is not completely consistent, the charging current in the wireless charging circuit is reduced, and different charging currents in the wireless charging receiving chips can be reduced. For example, the charging current is reduced by 500ma based on the present charging current. It is to be understood that the specific value of reducing the charging current in the wireless charging circuit may be set according to the requirement, and the embodiment of the disclosure does not limit this.

According to the embodiment of the disclosure, the temperature of the plurality of wireless charging receiving chips is respectively monitored in the wireless charging circuit configured with the plurality of wireless charging receiving chips connected in parallel, and the wireless charging receiving chips with the temperature larger than the first temperature threshold and smaller than the second temperature threshold are determined to exist in the plurality of wireless charging receiving chips, so that the charging current in the wireless charging circuit is reduced, the temperature of the wireless charging receiving chips is reduced, the adverse effect of overhigh temperature on the terminal or the chips is reduced, and the wireless charging on the terminal is safe and effective.

Fig. 4 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure. As shown in fig. 4, the charge control method includes the following steps.

In step S301, the temperatures of the plurality of wireless charging reception chips are monitored, respectively.

In step S302, in response to determining that there is a wireless charging receiving chip having a temperature greater than the second temperature threshold among the plurality of wireless charging receiving chips, the terminal is stopped from being charged.

And respectively monitoring the temperatures of the plurality of wireless charging receiving chips, stopping charging the terminal when the wireless charging receiving chips with the temperatures larger than the second temperature threshold exist.

For example, the second temperature threshold is set to 110 degrees celsius, and in the wireless charging process, the temperatures of the plurality of wireless charging receiving chips are monitored, and it is determined that one of the wireless charging receiving chips has a temperature of 112 degrees celsius, that is, it is determined that the temperature of the wireless charging receiving chip is greater than the second temperature threshold. At this time, since the temperature is already greater than the set second temperature threshold, the temperature of the wireless charging receiving chip cannot be effectively controlled to rise by reducing the charging current in the wireless charging circuit. In order to ensure the safety of the charging process, the terminal and the wireless charging receiving chip are protected, the terminal is stopped to be charged, and the wireless charging receiving chip is guaranteed not to generate heat due to charging.

According to the embodiment of the disclosure, the temperature of the plurality of wireless charging receiving chips is respectively monitored in the wireless charging circuit configured with the plurality of wireless charging receiving chips connected in parallel, and the wireless charging receiving chips with the temperature larger than the second temperature threshold value exist in the plurality of wireless charging receiving chips, so that the terminal is stopped being charged, the temperature of the wireless charging receiving chips is further increased through the charging process of the middle terminal, the temperature of the wireless charging receiving chips is reduced, and the safety of the charging process is ensured.

Fig. 5 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure. As shown in fig. 5, the charge control method includes the following steps.

In step S401, the temperatures of the plurality of wireless charging reception chips are monitored, respectively.

In step S402, in response to determining that there is a wireless charging receiving chip of the plurality of wireless charging receiving chips having a temperature greater than the second temperature threshold.

In step S403, a charge cutoff packet is transmitted to the wireless charge transmitting chip through the wireless charge receiving chip.

The temperature of the plurality of wireless receiving chips that charge is monitored respectively, the wireless receiving chips that charge that have the temperature to be greater than the second temperature threshold value that charge send the wireless transmitting chip that charges through the wireless receiving chip that charges to charge and end the package, the wireless transmitting chip that charges receives to charge and ends the package, the communication between the wireless receiving chip that charges of interrupt and the wireless receiving chip that charges makes the wireless transmitting chip that charges stop to the energy transmission of the wireless receiving chip that charges to the realization stops to charge to the terminal.

For example, the second temperature threshold is set to 110 degrees celsius, and in the wireless charging process, the temperatures of the plurality of wireless charging receiving chips are monitored, and it is determined that one of the wireless charging receiving chips has a temperature of 112 degrees celsius, that is, it is determined that the temperature of the wireless charging receiving chip is greater than 110 degrees celsius. In order to ensure the safety of the charging process, the terminal and the wireless charging receiving chip are protected, the wireless charging receiving chip sends a charging cut-off packet to the wireless charging transmitting chip, the wireless charging transmitting chip receives the charging cut-off packet, the communication between the wireless charging transmitting chip and the wireless charging receiving chip is interrupted, and the wireless charging transmitting chip stops energy transmission to the wireless charging receiving chip, so that the charging of the terminal is stopped, and the wireless charging receiving chip is guaranteed not to generate heat due to charging.

According to the embodiment of the disclosure, the temperature of the plurality of wireless charging receiving chips is respectively monitored in the wireless charging circuit configured with the plurality of wireless charging receiving chips connected in parallel, the wireless charging receiving chips with the temperature higher than the second temperature threshold value are determined to exist in the plurality of wireless charging receiving chips, the wireless charging receiving chips are used for sending the charging stop packet to the wireless charging transmitting chip, the wireless charging transmitting chip of the terminal transmits energy to the wireless charging receiving chips, the temperature of the wireless charging receiving chips is controlled to be further increased, the temperature of the wireless charging receiving chips is reduced, and the charging safety is ensured.

Fig. 6 is a flowchart illustrating a charging control method according to an exemplary embodiment of the disclosure, and an application manner of the charging control method in a specific application scenario is exemplarily described below with reference to fig. 6.

In step S501, wireless charging is started. The wireless charging circuit is provided with a plurality of wireless charging receiving chips which are connected in parallel, when the current in the charging circuit reaches a certain value, the switch is turned on, the current flows to the wireless charging receiving chips, and the terminal is charged.

In step S502, the temperatures of the plurality of wireless charging reception chips are respectively monitored. After the terminal starts to be wirelessly charged, the temperature sensors arranged on each wireless charging receiving chip start to acquire the temperature of the wireless charging receiving chip, and the plurality of temperature sensors are controlled by the controller and respectively monitor the temperature of the plurality of wireless charging receiving chips.

In step S503, whether there is a wireless charging receiving chip with a temperature greater than 95 degrees celsius or 110 degrees celsius among the plurality of wireless charging receiving chips.

After the terminal starts to be charged wirelessly, the plurality of temperature sensors are controlled by the controller, the temperatures of the plurality of wireless charging receiving chips are monitored respectively, and whether the wireless charging receiving chips with the temperatures higher than 95 ℃ or 110 ℃ exist in the temperatures of the plurality of wireless charging receiving chips or not is determined. When the wireless charging receiving chip with the temperature higher than 95 ℃ exists or the wireless charging receiving chip with the temperature of 110 ℃, different temperature control strategies are adopted for charging control.

In step S504, the current in the wireless charging circuit is reduced by 500 mA. When the wireless charging receiving chips with the temperature higher than 95 ℃ and lower than 110 ℃ exist in the plurality of wireless charging receiving chips, the charging chips in the CPU control terminal reduce the current in the wireless charging circuit by 500 mA.

In step S505, a charge cutoff packet is transmitted to the wireless charge transmitting chip through the wireless charge receiving chip. When the wireless charging receiving chips with the temperature higher than 110 ℃ exist in the plurality of wireless charging receiving chips, the central processing unit CPU controls the wireless charging receiving chips to send charging cut-off packages to the wireless charging transmitting chips. The wireless charging transmitting chip receives the charging stop packet, and communication between the wireless charging transmitting chip and the wireless charging receiving chip is interrupted, so that the wireless charging transmitting chip stops energy transmission to the wireless charging receiving chip, and charging of the terminal is stopped.

In step S506, the charging ends. Along with the end of the charging process, the wireless charging receiving chip does not generate heat any more, and the process safety of the terminal is ensured.

According to the embodiment of the disclosure, whether the wireless charging receiving chip with the temperature larger than the first temperature threshold value or the second temperature threshold value exists in the plurality of wireless charging receiving chips is determined by respectively monitoring the temperatures of the plurality of wireless charging receiving chips in the wireless charging circuit configured with the plurality of wireless charging receiving chips connected in parallel. When the wireless charging receiving chips with the temperatures higher than the first temperature threshold and lower than the second temperature threshold exist in the plurality of wireless charging receiving chips, the charging current in the wireless charging circuit is reduced, and when the wireless charging receiving chips with the temperatures higher than the second temperature threshold exist in the plurality of wireless charging receiving chips, the wireless charging receiving chips send charging cut-off packages to the wireless charging transmitting chips, so that charging is finished. The temperature of the wireless charging receiving chip is controlled to be further increased so as to reduce the temperature of the wireless charging receiving chip and ensure charging safety.

Fig. 7 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure. As shown in fig. 7, the charge control method includes the following steps.

In step S601, the temperatures of the plurality of wireless charging reception chips are monitored, respectively.

In step S602, a current overall temperature of the terminal is monitored.

In step S603, in response to determining that there is a wireless charging receiving chip having a temperature greater than a temperature threshold among the plurality of wireless charging receiving chips, the charging current of the terminal is adjusted.

In step S604, in response to the current overall temperature being greater than the third temperature threshold, the charging current of the terminal is adjusted based on the current overall temperature.

In the embodiment of the disclosure, a plurality of temperature sensors are arranged in a wireless charging circuit configured with a plurality of wireless charging receiving chips connected in parallel, and are used for respectively monitoring the temperatures of the plurality of wireless charging receiving chips and monitoring the current overall temperature of the terminal.

The temperature of the plurality of wireless charging receiving chips is monitored respectively, and the charging current of the terminal is adjusted if the wireless charging receiving chips with the temperature larger than the temperature threshold exist in the plurality of wireless charging receiving chips. And detecting the current complete machine temperature of the terminal, and when the complete machine temperature is greater than a third temperature threshold value, adjusting the charging current of the terminal based on the current complete machine temperature. It is understood that the third temperature threshold is less than the first and second temperature thresholds.

For example, the second temperature threshold is set to 37.6 degrees celsius, the current overall temperature of the terminal is monitored during the wireless charging process, the current overall temperature of the terminal is determined to be 38 degrees celsius and is greater than the second temperature threshold, the charging current of the terminal is adjusted based on the current overall temperature, and the charging current of the terminal is reduced, so that the heating of the terminal caused by the charging current is reduced.

For another example, the first temperature threshold is preset to be 95 degrees celsius, the second temperature threshold is 110 degrees celsius, the temperature of the plurality of wireless charging receiving chips is monitored in the wireless charging process, and it is determined that the temperature of one of the wireless charging receiving chips is 98 degrees celsius, that is, when it is determined that the temperature of the wireless charging receiving chip is greater than the first temperature threshold and less than the second temperature threshold, the charging current in the wireless charging circuit is reduced, so that the charging current in the plurality of wireless charging receiving chips is reduced.

The temperature of the wireless charging receiving chips and the current complete machine temperature of the monitoring terminal are monitored synchronously, and corresponding measures are required to be adopted when the preset temperature threshold is not met in the monitoring of the temperature of the wireless charging receiving chips and the current complete machine temperature of the terminal, so that the charging current is adjusted under the most unfavorable control condition.

According to the embodiment of the disclosure, the temperature of the plurality of wireless charging receiving chips is respectively monitored and the current overall temperature of the terminal is monitored in the wireless charging circuit configured with the plurality of wireless charging receiving chips connected in parallel, if the wireless charging receiving chips with the temperature higher than the temperature threshold exist in the plurality of wireless charging receiving chips or the current overall temperature is higher than the third temperature threshold, the charging current of the terminal is adjusted, the wireless charging process is optimized, and the charging safety is ensured.

In an embodiment of the disclosure, the temperature of the complete machine is determined based on the temperature of each temperature measuring point of the first number of temperature measuring points of the terminal, and corresponding relations exist between different complete machine temperatures and charging currents.

Fig. 8 is a flowchart illustrating a charging control method according to another exemplary embodiment of the present disclosure. As shown in fig. 8, the charge control method includes the following steps.

In step S701, the temperatures of the plurality of wireless charging reception chips are monitored, respectively.

In step S702, the current overall temperature of the terminal is monitored.

In step S703, in response to determining that there is a wireless charging receiving chip having a temperature greater than a temperature threshold among the plurality of wireless charging receiving chips, the charging current of the terminal is adjusted.

In step S704, in response to the current complete machine temperature being greater than the third temperature threshold, a charging current matching the current complete machine temperature is determined based on the corresponding relationship between the complete machine temperature and the charging current.

In step S705, the terminal is charged based on the charging current.

In the embodiment of the disclosure, a plurality of temperature sensors are arranged in a wireless charging circuit configured with a plurality of wireless charging receiving chips connected in parallel, and are used for respectively monitoring the temperatures of the plurality of wireless charging receiving chips and monitoring the current overall temperature of the terminal. The temperature of the whole machine is determined based on the temperature of each temperature measuring point of the first number of temperature measuring points of the terminal, and corresponding relations exist between different whole machine temperatures and charging currents. For example, temperature sensors, i.e., thermistors, are disposed at different positions in the terminal for monitoring the temperature of each part of the terminal in real time. For example, the temperature of the wireless module, the temperature of the antenna module, the temperature of the charging module, the battery temperature, the demodulator temperature, and the like. The temperature of the whole machine is determined based on the temperatures of a plurality of temperature measuring points of the terminal, and the number of the plurality of temperature measuring points can be set by self.

For example, when the number of temperature measuring points is set to 7, that is, thermistors are arranged at 7 different positions inside the terminal, and the temperatures of the different positions are respectively monitored in real time. The 7 different locations may be locations of a wireless module, a connection module, a charging module, a modem module, a crystal oscillator module, and a battery, which are located at the terminal. The temperature of the whole terminal can be determined based on the temperature of each temperature measuring point in the temperature measuring points by the following formula:

(a×wireless_therm+b×conn_therm+c×charger_therm0+d×charger_therm1+e×modem_therm+f×xo_therm+g×battery_therm)/h+i

wherein, wireless _ therm represents the temperature of the wireless module, conn _ therm represents the temperature of the connection module, charge _ therm0 and charge _ therm1 represent the temperature of the charging module, modem _ therm represents the temperature of the modem module, xo _ therm represents the temperature of the crystal oscillator, battery _ therm represents the temperature of the battery, and parameters a, b, c … … h and i are all constants and can be set according to the use requirement.

The temperature of the plurality of wireless charging receiving chips is monitored respectively, and the charging current of the terminal is adjusted if the wireless charging receiving chips with the temperature larger than the temperature threshold exist in the plurality of wireless charging receiving chips. And if the temperature is further increased and the wireless charging receiving chips with the temperature greater than the second temperature threshold exist, the terminal is stopped being charged.

The complete machine temperature and the charging current have a corresponding relation, when the current complete machine temperature is larger than a third temperature threshold value, the charging current matched with the current complete machine temperature is determined based on the corresponding relation between the complete machine temperature and the charging current, and the terminal is charged based on the determined charging current.

In an embodiment of the disclosure, the temperature of the complete machine may be determined based on the temperature of each temperature measuring point of the first number of temperature measuring points of the terminal, and the charging current matching the current complete machine temperature may be determined based on the corresponding relationship between the complete machine temperature and the charging current. Wherein, based on the temperature of the whole machine and the charging current, the following table shows:

trigger temperature (. degree. C.)	37.6	38.6	39.4	40.2	41	42	43
								Set current	2A	1.7A	1.5A	1A	850mA	450mA	230mA

And the third temperature threshold is 37.6 ℃, and when the temperature of the whole machine is determined to be 37.6 ℃ based on the temperature of each temperature measuring point of the first number of temperature measuring points of the terminal, the charging current in the circuit is limited, namely the charging current is reduced to 2A. In the charging process, the temperature is further increased, and when the temperature of the whole machine is determined to be 39.4 ℃, the charging current in the circuit is limited, namely the charging current is reduced to 1.5A for charging. It will be appreciated that the charging current may be determined by interpolation when the determined overall temperature is at the median of the trigger temperatures in the table.

The temperature of a plurality of wireless charging receiving chips is monitored, the current complete machine temperature of the monitoring terminal is monitored synchronously, corresponding measures are required to be adopted when the preset temperature threshold value is not met in the monitoring of the temperature of the wireless charging receiving chips and the current complete machine temperature of the terminal, and the charging current is adjusted under the most unfavorable control condition.

For example, the first temperature threshold is set to 95 degrees celsius and the second temperature threshold is set to 110 degrees celsius in advance, in the wireless charging process, the temperatures of the plurality of wireless charging receiving chips are monitored, and it is determined that one of the wireless charging receiving chips is 98 degrees celsius, that is, when it is determined that the temperature of the wireless charging receiving chip is greater than the first temperature threshold and less than the second temperature threshold, the charging current in the wireless charging circuit is reduced. In the charging circuit, when a plurality of wireless charging receiving chips are connected in parallel, the current of each wireless charging receiving chip is not completely consistent, the charging current in the wireless charging circuit is reduced, and different charging currents in the wireless charging receiving chips can be reduced. For example, the charging current is reduced by 500ma based on the present charging current. When the current charging current is 2A, the charging current is adjusted to be 1.5A based on monitoring the temperature of the plurality of wireless charging receiving chips.

At this time, the temperature of the whole terminal is determined to be 40.2 ℃ based on the temperature of the internal temperature measuring point of the terminal, and then the charging current is reduced to 1A based on the corresponding relation between the temperature of the whole terminal and the charging current, so that the terminal is charged. The adjustment result of the charging current is carried out on the temperature monitoring of the wireless charging chips, the adjustment result of the charging current is carried out on the temperature of the whole monitoring terminal, the comprehensive analysis is carried out, the smaller value between the charging current and the charging current is determined, namely the charging current is reduced to 1A, the terminal is charged, and the charging safety is ensured.

Based on the same conception, the embodiment of the disclosure also provides a charging control device.

It is to be understood that, in order to implement the above functions, the charging control apparatus provided in the embodiments of the present disclosure includes a hardware structure and/or a software module corresponding to the execution of each function. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Fig. 9 is a block diagram illustrating a charge control device according to an exemplary embodiment of the present disclosure. Referring to fig. 9, the charging control apparatus 100 is applied to a terminal, the terminal is included in a wireless charging circuit, a plurality of wireless charging receiving chips connected in parallel are configured in the wireless charging circuit, and the charging control apparatus 100 includes: a monitoring module 101 and an adjustment module 102.

The monitoring module 101 is configured to monitor temperatures of the plurality of wireless charging receiving chips respectively.

The adjusting module 102 is configured to determine that a wireless charging receiving chip with a temperature greater than a temperature threshold exists in the plurality of wireless charging receiving chips, and adjust a charging current of the terminal.

In an embodiment, the adjusting module 102 determines that there is a wireless charging receiving chip with a temperature greater than a temperature threshold among the plurality of wireless charging receiving chips, and adjusts the charging current in the wireless charging circuit as follows: in response to determining that there is a wireless charging receiving chip of the plurality of wireless charging receiving chips having a temperature greater than the first temperature threshold and less than the second temperature threshold, reducing a charging current in the wireless charging circuit.

In an embodiment, the adjusting module 102 determines that there is a wireless charging receiving chip with a temperature greater than a temperature threshold among the plurality of wireless charging receiving chips, and adjusts the charging current in the wireless charging circuit as follows: and stopping charging the terminal in response to determining that the wireless charging receiving chip with the temperature larger than the second temperature threshold exists in the plurality of wireless charging receiving chips.

In an embodiment, the adjusting module 102 stops charging the terminal as follows: and sending a charging cut-off packet to the wireless charging transmitting chip through the wireless charging receiving chip.

In one embodiment, the monitoring module 101 is further configured to: monitoring the current complete machine temperature of the terminal; the adjusting module 102 is further configured to adjust the charging current of the terminal based on the current complete machine temperature when the current complete machine temperature is greater than the third temperature threshold.

In one embodiment, the temperature of the whole machine is determined based on the temperature of each temperature measuring point of the first number of temperature measuring points of the terminal, and different whole machine temperatures and charging currents have corresponding relations; the adjusting module 102 adjusts the charging current of the terminal based on the current overall temperature in the following manner: and determining the charging current matched with the current complete machine temperature based on the corresponding relation between the complete machine temperature and the charging current, and charging the terminal based on the charging current.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 10 is a block diagram illustrating an apparatus for charge control according to an example embodiment. For example, the apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 10, the apparatus 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices 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 memory, flash memory, magnetic or optical disks.

Power component 806 provides power for the various components of device 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 800.

The multimedia component 808 includes a screen that provides an output interface between the device 800 and a 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 touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 may detect the open/closed status of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. 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.

In an exemplary embodiment, the apparatus 800 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, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the device 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

It is understood that "a plurality" in this disclosure means two or more, and other words are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further understood that, unless otherwise specified, "connected" includes direct connections between the two without the presence of other elements, as well as indirect connections between the two with the presence of other elements.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A charging control method is applied to a terminal, the terminal is included in a wireless charging circuit, a plurality of wireless charging receiving chips connected in parallel are configured in the wireless charging circuit, and the charging control method comprises the following steps:

respectively monitoring the temperatures of the plurality of wireless charging receiving chips;

and adjusting the charging current of the terminal in response to determining that the wireless charging receiving chip with the temperature larger than the temperature threshold exists in the plurality of wireless charging receiving chips.

2. The charging control method of claim 1, wherein the adjusting the charging current in the wireless charging circuit in response to determining that there is a wireless charging receiving chip of the plurality of wireless charging receiving chips having a temperature greater than a temperature threshold comprises:

in response to determining that there is a wireless charging receiving chip of the plurality of wireless charging receiving chips having a temperature greater than a first temperature threshold and less than a second temperature threshold, reducing a charging current in the wireless charging circuit.

3. The charging control method of claim 1, wherein the adjusting the charging current in the wireless charging circuit in response to determining that there is a wireless charging receiving chip of the plurality of wireless charging receiving chips having a temperature greater than a temperature threshold comprises:

and stopping charging the terminal in response to determining that the wireless charging receiving chips with the temperature greater than a second temperature threshold exist in the plurality of wireless charging receiving chips.

4. The method of claim 3, wherein the ceasing to charge the terminal comprises:

and sending a charging cut-off packet to the wireless charging transmitting chip through the wireless charging receiving chip.

5. The charge control method according to claim 1, characterized by further comprising:

monitoring the current complete machine temperature of the terminal;

and in response to the current complete machine temperature being greater than a third temperature threshold, adjusting the charging current of the terminal based on the current complete machine temperature.

6. The charge control method according to claim 5, wherein the overall temperature is determined based on the temperature of each temperature measurement point of the first number of temperature measurement points of the terminal, and different overall temperatures and charge currents have corresponding relations;

adjusting the charging current of the terminal based on the current overall temperature, including:

and determining a charging current matched with the current complete machine temperature based on the corresponding relation between the complete machine temperature and the charging current, and charging the terminal based on the charging current.

7. The charging control device is applied to a terminal, the terminal is included in a wireless charging circuit, a plurality of wireless charging receiving chips connected in parallel are configured in the wireless charging circuit, and the charging control device comprises:

the monitoring module is used for respectively monitoring the temperatures of the plurality of wireless charging receiving chips;

and the adjusting module is used for determining that the wireless charging receiving chips with the temperature larger than the temperature threshold exist in the plurality of wireless charging receiving chips and adjusting the charging current of the terminal.

8. The charging control device of claim 7, wherein the adjusting module determines that there is a wireless charging receiving chip with a temperature greater than a temperature threshold among the plurality of wireless charging receiving chips, and adjusts the charging current in the wireless charging circuit by:

9. The charging control device of claim 7, wherein the adjusting module determines that there is a wireless charging receiving chip with a temperature greater than a temperature threshold in the plurality of wireless charging receiving chips, and adjusts the charging current in the wireless charging circuit by:

10. The charging control device of claim 9, wherein the adjustment module stops charging the terminal by:

11. The charge control device of claim 7, wherein the monitoring module is further configured to:

monitoring the current complete machine temperature of the terminal;

the adjusting module is further configured to adjust the charging current of the terminal based on the current complete machine temperature when the current complete machine temperature is greater than a third temperature threshold.

12. The charge control device according to claim 11, wherein the overall temperature is determined based on the temperature of each temperature measurement point of the first number of temperature measurement points of the terminal, and different overall temperatures have a corresponding relationship with the charge current;

the adjusting module adjusts the charging current of the terminal based on the current complete machine temperature in the following mode:

13. A charge control device, characterized by comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: the charge control method according to any one of claims 1 to 6 is executed.

14. A non-transitory computer-readable storage medium having instructions therein, which when executed by a processor of a mobile terminal, enable the mobile terminal to perform the charge control method of any one of claims 1 to 6.