WO2020133081A1 - 充电方法和装置、待充电设备、存储介质及芯片系统 - Google Patents

充电方法和装置、待充电设备、存储介质及芯片系统 Download PDF

Info

Publication number
WO2020133081A1
WO2020133081A1 PCT/CN2018/124411 CN2018124411W WO2020133081A1 WO 2020133081 A1 WO2020133081 A1 WO 2020133081A1 CN 2018124411 W CN2018124411 W CN 2018124411W WO 2020133081 A1 WO2020133081 A1 WO 2020133081A1
Authority
WO
WIPO (PCT)
Prior art keywords
charging
temperature
charged
threshold
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/124411
Other languages
English (en)
French (fr)
Inventor
杨军
万世铭
林尚波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN201880098867.1A priority Critical patent/CN112889199A/zh
Priority to PCT/CN2018/124411 priority patent/WO2020133081A1/zh
Priority to EP18945198.2A priority patent/EP3893357A4/en
Publication of WO2020133081A1 publication Critical patent/WO2020133081A1/zh
Priority to US17/351,229 priority patent/US20210313820A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/90—Regulation of charging or discharging current or voltage
    • H02J7/94—Regulation of charging or discharging current or voltage in response to battery current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/65—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overtemperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/90—Regulation of charging or discharging current or voltage
    • H02J7/971—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/975—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature

Definitions

  • the present application relates to the charging field, and more specifically, to a charging method and device, a device to be charged, a storage medium, and a chip system.
  • devices to be charged are increasingly favored by consumers, but devices to be charged consume large amounts of electricity and need to be charged frequently.
  • the present application provides a charging method and device, a device to be charged, a storage medium, and a chip system, which can control the heating of the device to be charged.
  • a charging method which includes: when the voltage of the battery and the temperature of the device to be charged satisfy preset conditions, determining that the battery enters a constant current charging stage; detecting the temperature of the device to be charged; when the When the temperature of the device to be charged is greater than the first threshold, the charging current is reduced by ⁇ I; the device to be charged is charged with the charging current after reducing ⁇ I.
  • a charging device which includes: a communication control circuit configured to determine that the battery enters a constant current charging stage and detect the temperature of the device to be charged when the battery voltage and temperature meet a preset condition, When the temperature of the device to be charged is greater than the first threshold, the charging current is reduced by ⁇ I; the charging circuit is used to charge the battery with the charging current after reducing ⁇ I.
  • a storage medium including: instructions, when the program is executed by a processor, the first aspect and the method described in any one of the implementation manners of the first aspect are executed.
  • a chip system including: a memory for storing instructions; a processor for calling and running the instructions from the memory, so that a charging device mounted with the chip system performs the first aspect And the method described in any one of the implementation aspects of the first aspect.
  • the technical solution provided by the present application sets a first threshold for the temperature of the device to be charged when charging the device to be charged, and reduces the charging current for charging when the temperature of the device to be charged is higher than the first threshold, which can avoid The phenomenon that the temperature of the device to be charged is too high.
  • Figure 1 is a schematic diagram of a wireless charging system.
  • FIG. 2 is a schematic diagram of a charging method provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of another charging method provided by another embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another charging method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a charging device provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of another wireless charging system provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a chip system provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another wireless charging system provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a device to be charged according to an embodiment of the present application.
  • the temperature of the device to be charged will increase due to the heat generated by each functional module. If the temperature of the device to be charged is too high, it may cause the device to be charged to be abnormal and affect the user experience.
  • Current charging methods of the device to be charged may include wired charging methods and wireless charging methods.
  • the power supply device can be connected to the device to be charged through a cable, and the output power of the power supply device can be transmitted to the device to be charged through the cable to charge the device to be charged.
  • the internal charge management circuit of the device to be charged can manage the output power of the power supply device, and transmit the output voltage and output current of the power supply device to the battery, which is the battery Charge it.
  • the internal charging management circuit of the device to be charged will generate a large amount of heat, which will cause the temperature of the device to be charged to rise and affect the user experience.
  • the wireless charging method can charge the device to be charged based on the wireless charging technology.
  • the wireless charging technology can complete the power transmission without a cable, which can simplify the operation in the charging preparation stage.
  • Traditional wireless charging technology generally connects the power supply device (such as an adapter) to a wireless charging device (such as a wireless charging base), and transmits the output power of the power supply device to the standby device in a wireless manner (such as electromagnetic waves) through the wireless charging device Charging equipment, to wirelessly charge the equipment to be charged.
  • a wireless charging device such as a wireless charging base
  • wireless charging methods are mainly divided into three methods: magnetic coupling (or electromagnetic induction), magnetic resonance, and radio waves.
  • the mainstream wireless charging standards include the QI standard, the Power Matters Alliance (PMA) standard, and the Wireless Power Alliance (alliance for wireless power, A4WP). Both the QI standard and the PMA standard use magnetic coupling for wireless charging.
  • the A4WP standard uses magnetic resonance for wireless charging.
  • the wireless charging system includes a power supply device 110, a wireless charging device 120, and a device to be charged 130, wherein the wireless charging device 120 may be, for example, a wireless charging base, and the device to be charged 130 may be, for example, a terminal.
  • the wireless charging device 120 may be, for example, a wireless charging base
  • the device to be charged 130 may be, for example, a terminal.
  • the output voltage and output current of the power supply device 110 are transmitted to the wireless charging device 120.
  • the wireless charging device 120 can convert the output voltage and output current of the power supply device 110 into a wireless charging signal (electromagnetic signal) through an internal wireless transmission circuit 121 for transmission.
  • the wireless transmitting circuit 121 may convert the output current of the power supply device 110 into alternating current, and convert the alternating current into a wireless charging signal through a transmitting coil or a transmitting antenna.
  • Devices to be charged include, but are not limited to: being configured to be connected via a wired line (such as via a public switched telephone network (PSTN), digital subscriber line (DSL), digital cable, direct cable connection, and And/or another data connection/network) and/or digital TV via (eg, for cellular networks, wireless local area networks (WLAN), WLAN), such as handheld digital video broadcasting (digital video broadcasting (DVB-H) networks)
  • a wired line such as via a public switched telephone network (PSTN), digital subscriber line (DSL), digital cable, direct cable connection, and And/or another data connection/network
  • digital TV via eg, for cellular networks, wireless local area networks (WLAN), WLAN), such as handheld digital video broadcasting (digital video broadcasting (DVB-H) networks
  • a network a satellite network, an AM-FM (amplitude-modulation-frequency modulation) broadcast transmitter, and/or a wireless interface device of another communication terminal to receive/transmit a communication signal.
  • AM-FM
  • Terminals configured to communicate through a wireless interface may be referred to as “wireless communication terminals", “wireless terminals", and/or “mobile terminals”.
  • mobile terminals include, but are not limited to, satellite or cellular telephones; personal communication system (PCS) terminals that can combine cellular radiotelephones with data processing, facsimile, and data communication capabilities; can include radiotelephones, pagers, and Internet/ Personal digital assistant (personal digital assistant (PDA)) for intranet access, web browser, notepad, calendar and/or global positioning system (GPS) receiver; and regular laptop and/or palmtop Receiver or other electronic device including a radio telephone transceiver.
  • PCS personal communication system
  • PDA personal digital assistant
  • GPS global positioning system
  • the device to be charged may refer to that the mobile terminal is a device or a handheld terminal device, such as a mobile phone or a pad.
  • the device to be charged mentioned in the embodiment of the present application may refer to a chip system.
  • the battery of the device to be charged may or may not belong to the chip system.
  • the following uses a wireless charging device and a device to be charged as an example for description.
  • the device to be charged 130 may receive the wireless charging signal transmitted by the wireless transmitting circuit 121 through the wireless receiving circuit 131, and convert the wireless charging signal into the output voltage and output current of the wireless receiving circuit 131.
  • the wireless receiving circuit 131 may convert the wireless charging signal transmitted by the wireless transmitting circuit 121 into alternating current through a receiving coil or a receiving antenna, and rectify and/or filter the alternating current to convert the alternating current into the wireless receiving circuit 131 Output voltage and output current.
  • the wireless charging device 120 may pre-negotiate the transmission power of the wireless transmission circuit 121 with the device to be charged 130. Assuming that the power negotiated between the wireless charging device 120 and the device to be charged 130 is 5W, the output voltage and output current of the wireless receiving circuit 131 are generally 5V and 1A. Assuming that the negotiated power between the wireless charging device 120 and the device to be charged 130 is 10.8 W, the output voltage and output current of the wireless receiving circuit 131 are generally 9 V and 1.2 A.
  • the constant voltage and/or constant current control needs to be performed first through the conversion circuit 132 in the device to be charged 130 to obtain the battery in the device to be charged 130 133 Expected charging voltage and/or charging current.
  • the conversion circuit 132 may be used to convert the output voltage of the wireless receiving circuit 131 so that the output voltage and/or output current of the conversion circuit 132 meets the charging voltage and/or charging current requirements of the battery 133.
  • the conversion circuit 132 may be, for example, a charging integrated circuit (IC) or a power management circuit. During the charging process of the battery 133, the conversion circuit 132 may be used to manage the charging voltage and/or charging current of the battery 133.
  • the conversion circuit 132 may include a voltage feedback function and/or a current feedback function to manage the charging voltage and/or charging current of the battery 133.
  • the battery charging process may include one or more of a trickle charging stage, a constant current charging stage, and a constant voltage charging stage.
  • the conversion circuit 132 may use a current feedback function to make the current entering the battery 133 in the trickle charging stage satisfy the expected charging current magnitude of the battery 133 (such as the first charging current).
  • the conversion circuit 132 can use the current feedback function to make the current entering the battery 133 during the constant current charging stage satisfy the expected charging current of the battery 133 (such as the second charging current, which can be greater than the first charging current recharging current).
  • the conversion circuit 132 may use the voltage feedback function to make the voltage applied to the battery 133 in the constant voltage charging stage satisfy the expected charging voltage of the battery 133.
  • the conversion circuit 132 may be used to step-down the output voltage of the wireless receiving circuit 131, so that the charging obtained after the step-down conversion The voltage meets the expected charging voltage requirement of the battery 133.
  • the conversion circuit 132 may be used to boost the output voltage of the wireless receiving circuit 131, so that the boosted The charging voltage meets the expected charging voltage requirement of the battery 133.
  • the conversion circuit 132 may step down the output voltage of the wireless receiving circuit 131, In order to make the charging voltage obtained after the voltage reduction meet the expected charging voltage demand of the battery 133.
  • the conversion circuit 132 (for example, Boost boost circuit) can The output voltage of is boosted, so that the boosted charging voltage meets the expected charging voltage demand of the battery 133.
  • the conversion circuit 132 is limited by the reason for the low power conversion efficiency (also referred to as energy conversion efficiency, or circuit conversion efficiency), so that the electrical energy of the unconverted portion is lost in the form of heat. This part of the heat will be focused inside the device 130 to be charged.
  • the design space and heat dissipation space of the device to be charged 130 are very small (for example, the physical size of the mobile terminal used by the user is getting lighter and thinner, and a large number of electronic components are densely arranged in the mobile terminal to improve the performance of the mobile terminal), which This not only increases the difficulty of designing the conversion circuit 132, but also makes it difficult to remove the heat focused in the device to be charged 130 in time, thereby causing an abnormality of the device to be charged 130.
  • the heat accumulated on the conversion circuit 132 may cause thermal interference to the electronic components near the conversion circuit 132, causing abnormal operation of the electronic components.
  • the heat accumulated on the conversion circuit 132 may shorten the service life of the conversion circuit 132 and nearby electronic components.
  • the heat accumulated on the conversion circuit 132 may cause thermal interference to the battery 133, which may cause abnormal charging and discharging of the battery 133.
  • the heat accumulated on the conversion circuit 132 may cause the temperature of the device to be charged 130 to increase, which may affect the user's experience during charging.
  • the heat accumulated on the conversion circuit 132 may cause a short circuit of the conversion circuit 132 itself, so that the output voltage of the wireless receiving circuit 131 is directly loaded across the battery 133 to cause abnormal charging, if the battery 133 is in overvoltage charging for a long time The state may even cause the battery 133 to explode, endangering the safety of the user.
  • the transmitting coil of the wireless transmitting circuit and the receiving coil of the wireless receiving circuit also generate a large amount of heat, causing the temperature of the device to be charged to rise.
  • Embodiments of the present application provide a charging method, which can control the heating of a device to be charged during charging.
  • the charging method shown in FIG. 2 includes steps S210-S220.
  • the temperature of the device to be charged may refer to the temperature of the device itself to be charged, or may also refer to the temperature of the battery in the device to be charged.
  • the temperature of the device to be charged may be detected. Detecting the temperature of the device to be charged may be achieved by detecting the temperature of the device itself to be charged, or may be achieved by detecting the temperature of the battery.
  • the temperature of the device to be charged meeting the preset condition may refer to the temperature of the device to be charged meeting the condition of entering the constant current charging stage, for example, the temperature of the device to be charged is between 16°C and 45°C.
  • the voltage of the battery satisfies the preset condition, which may mean that the voltage of the battery satisfies the condition of entering the constant current charging stage, for example, the voltage of the battery satisfies 3.6V to 4.35V.
  • different charging currents can be determined according to the current temperature state of the device to be charged, and the charging of the device to be charged can be adjusted based on the temperature, rather than charging the device to be charged with a substantially constant charging current, which can be To a certain extent, control the heating of the equipment to be charged.
  • the charging process of the device to be charged can be applied in the constant current charging stage or other charging stages.
  • different charging currents can be selected according to the temperature of the device to be charged to perform constant current charging on the device to be charged.
  • the temperature of the device to be charged and the battery voltage can also be detected. After the temperature of the device to be charged and the voltage of the battery meet the requirements of the corresponding charging stage, the corresponding charging stage is entered again Charge it.
  • the target charging current is then used to perform constant current charging on the charging device.
  • the battery voltage is between 3.6V and 4.35V and the temperature of the device to be charged is between 16°C and 41°C
  • the device to be charged can be charged with a constant current.
  • step 210 There are many ways to implement step 210, which is not specifically limited in the embodiments of the present application.
  • different temperature intervals can be set, and a charging current can be set for each temperature interval. Then, the charging current corresponding to the temperature interval can be selected according to the current temperature interval of the device to be charged to charge the charging device.
  • the preset interval where the temperature of the device to be charged is located may be determined before determining the target charging current.
  • the preset interval is a preset interval among multiple preset intervals, and each preset interval among the multiple preset intervals corresponds to a charging current.
  • the temperatures corresponding to the multiple preset intervals may all be different, that is, there is no intersection of the multiple preset intervals, or the temperatures corresponding to the multiple preset intervals do not overlap.
  • the target charging current is the charging current corresponding to the preset interval.
  • multiple temperature intervals can be set, and different charging currents are used in different temperature intervals to charge the device to be charged, which can optimize the charging method and flexibly adjust the charging speed and the temperature of the device to be charged Make adjustments.
  • the plurality of preset intervals may include a first preset interval and a second preset interval, the temperature corresponding to the first preset interval is less than the temperature corresponding to the second preset interval, and the temperature corresponding to the first preset interval The charging current is greater than the charging current corresponding to the second preset interval.
  • the target charging current is the first charging current.
  • the target charging current is the second charging current, wherein the temperature corresponding to the first preset interval is less than the temperature corresponding to the second preset interval, and the current of the first charging is greater than The second charging current.
  • the technical solution provided by the embodiments of the present application uses a larger charging current for charging when the temperature of the device to be charged is low, which can increase the charging speed and ensure that the device to be charged can be quickly charged.
  • the charging is performed with a small charging current to control the heating of the device to be charged, which can reduce the temperature of the device to be charged, thereby improving the user experience.
  • the smaller the charging current the larger the charging power, and the less heat is generated by the equipment to be charged. Conversely, the greater the charging current and the greater the charging power, the more severe the heating of the device to be charged. Therefore, when the temperature of the device to be charged is high, the heating of the device to be charged can be reduced by reducing the charging current, so that the calorific value of the device to be charged is less than the heat dissipation, thereby reducing the temperature of the device to be charged.
  • the first preset interval and the second preset interval in the above are only a general description.
  • the embodiments of the present application may set more than two multiple preset intervals, and set multiple charging currents for the multiple preset intervals.
  • each preset interval may correspond to a charging current.
  • the charging current corresponding to the preset interval where the temperature of the device to be charged is located can be used to charge the charging device according to the preset interval where the temperature of the device to be charged is located.
  • the lengths of the multiple preset intervals may be the same or different.
  • the multiple preset intervals may be set at equal intervals.
  • a setting method in which the greater the temperature value corresponding to the preset interval and the smaller the interval may be adopted, that is, when the temperature is lower, the span of the preset interval may be set larger, while the temperature is higher When it is high, set the span of the temperature interval to be small.
  • the multiple charging currents may be set at equal intervals, or may be set at non-equal intervals.
  • the difference in charging currents corresponding to adjacent preset intervals is equal.
  • a setting method in which the higher the temperature is, the larger the difference between the charging currents corresponding to adjacent preset intervals may be adopted. That is, when the temperature is low, the difference between the charging currents corresponding to adjacent temperature intervals is small, and when the temperature is high, the difference between the charging currents corresponding to adjacent temperature intervals is large.
  • the temperature preset interval and the setting method of the charging current are described in more detail below.
  • the intervals of the multiple preset intervals may all be 4°C, that is, a temperature file is set every 4°C.
  • the charging current corresponding to each preset interval may be set at equal intervals.
  • the charging current when the temperature is between 16°C and 20°C, the charging current can be set to 2.0A; when the temperature is between 20°C and 24°C, the charging current can be set to 1.8A; when the temperature is between 24°C and 28 Between °C, the charging current can be set to 1.6A; when the temperature is between 28 °C ⁇ 32 °C, the charging current can be set to 1.4A; when the temperature is between 32 °C ⁇ 36 °C, the charging current can be set to 1.2A.
  • the charging current corresponding to each preset interval may be set at unequal intervals.
  • the charging current can be set to 2.0A; when the temperature is between 20°C ⁇ 24°C, the charging current can be set to 1.9A; when the temperature is between 24°C ⁇ 28 Between °C, the charging current can be set to 1.7A; when the temperature is between 28 °C ⁇ 32 °C, the charging current can be set to 1.4A; when the temperature is between 32 °C ⁇ 36 °C, the charging current can be set to 1.0A.
  • the multiple preset intervals are set more and more densely as the temperature increases.
  • the interval of the temperature preset interval may be set in an equidistance series.
  • the charging current corresponding to each preset interval may be set at equal intervals. Taking the difference of the charging currents corresponding to adjacent preset intervals as 0.3A for example. For example, when the temperature is between 16°C and 32°C, the charging current can be set to 1.8A; when the temperature is between 32°C and 36°C, the charging current can be set to 1.5A; when the temperature is between 36°C and 38°C In between, the charging current can be set to 1.2A.
  • the charging current corresponding to each preset interval may be set at unequal intervals.
  • the charging current can be set to 1.9A; when the temperature is between 32°C and 36°C, the charging current can be set to 1.7A; when the temperature is between 36°C and 38°C Between, the charging current can be set to 1.4A; when the temperature is between 38 °C ⁇ 39 °C, the charging current can be set to 1.0A.
  • the temperature interval can be set closer, and when the temperature is higher, the charging current used is rapidly reduced, and the calorific value of the device to be charged can be quickly reduced, so the device to be charged can be effectively and timely
  • the temperature is controlled within a reasonable range, so that the temperature of the device to be charged is not too high, which affects the user experience.
  • a maximum temperature point may be set, and when the temperature of the device to be charged exceeds the maximum temperature point, a current that decreases by ⁇ I is used to charge the device to be charged.
  • the charging method may include steps S310-S340.
  • the temperature of the device to be charged may be directly detected by the detection circuit, or the temperature of the device to be charged may be detected by the detection circuit, and the temperature of the device to be charged may be indirectly reflected by the temperature of the device to be charged.
  • the first threshold may be a higher temperature point. When the temperature of the device to be charged exceeds the temperature point, it indicates that the temperature of the device to be charged may soon reach the limit of the battery temperature. If the temperature is higher, the temperature may be triggered. Abnormal charging device.
  • the first threshold may be 41°C, or the first threshold may be 40°C or 45°C. Therefore, after the temperature of the device to be charged exceeds the first threshold, the charging current may be reduced to reduce the temperature of the device to be charged.
  • the technical solution provided by the embodiment of the present application may preset a first threshold of temperature, that is, a high temperature point, and when the temperature of the device to be charged exceeds the high temperature point, the charging current is reduced to control the temperature of the device to be charged .
  • reducing the charging current by ⁇ I may refer to when the temperature of the device to be charged is greater than the first threshold, decreasing the charging current by ⁇ I every time t until The temperature of the device to be charged is less than the first threshold.
  • reducing the charging current by ⁇ I may refer to when the temperature of the device to be charged is greater than the first threshold, decreasing the charging current by ⁇ I every time t until after the reduction The rated charging current is less than the preset minimum charging current.
  • the charging current is reduced by 200mA, and the charging device is charged with the charging current after the decrease of 200mA. If the temperature of the device to be charged drops to less than 41°C, it can be charged with the reduced charging current. If the temperature of the device to be charged still continues to rise and exceeds the first threshold, the charging current may continue to be reduced by 200 mA until the temperature of the device to be charged is less than 41°C.
  • the charging current is gradually reduced to find a suitable charging current, so that the calorific value and heat dissipation of the device to be charged are balanced.
  • the device to be charged The temperature is relatively stable, and it can also be charged with the maximum charging current when the temperature no longer rises. Therefore, the embodiments of the present application can increase the charging speed and improve the user experience while controlling the temperature of the device to be charged.
  • the temperature of the device to be charged may take some time to respond to the charging current. Therefore, after the temperature reaches the first threshold, the charging time t can be continued, and then it is detected whether the temperature of the device to be charged really exceeds the first A threshold. In other words, the current temperature of the device to be charged does not truly represent the result of the charging current being charged to the device to be charged. After the temperature exceeds the first threshold, it can continue to charge at the previous charging current for a time t, and then detect the temperature of the device to be charged . If the temperature of the device to be charged still exceeds the first threshold, the charging current ⁇ I can be reduced; if the temperature of the device to be charged drops and falls below the first threshold, the current charging current can continue to charge the device to be charged.
  • the charging time t may be any value between 10 ms and 20 ms. Taking the charging time t as 15ms and the first threshold value as 41°C as an example, if the temperature of the device to be charged exceeds 41°C during charging with a charging current of 1.6A, the charging current of 1.6A can be used to continue charging for 15ms; If the temperature of the charging device continues to rise, you can reduce the charging current by 200mA, and charge the charging device with a charging current of 1.4A; charge the charging device with a charging current of 1.4A for 15ms, if the temperature of the device to be charged drops and drops If the temperature is 40°C, the device to be charged can be charged with a charging current of 1.4A.
  • the charging current can be continuously reduced, and the device to be charged with a charging current of 1.2A can be charged for 15ms. Repeat the above steps until the temperature of the device to be charged is less than 41°C.
  • a preset minimum charging current can be set.
  • the preset minimum charging current may be 500 mA.
  • the charging current is reduced to less than 500 mA, the charging may be ended.
  • the charging current has been reduced to less than 500 mA, but the temperature of the device to be charged still exceeds the first threshold, charging can also be ended at this time.
  • a third threshold may also be set.
  • the third threshold may be understood as a maximum temperature value, and the third threshold is greater than the first threshold.
  • the maximum temperature value may be 45°C.
  • the charging process of the device to be charged that is, regardless of the stage described above, when the temperature of the device to be charged exceeds 45°C, the charging ends To ensure the safety of the device to be charged.
  • the charging mechanism of the embodiment of the present application may also adopt a combination of setting a preset interval and gradually reducing the charging current to perform temperature control.
  • the embodiment of the present application may further set a second threshold point, and the second threshold is less than the first threshold.
  • the second threshold is less than the first threshold.
  • the temperature of the device to be charged is less than the second threshold value may mean that the temperature of the device to be charged is less than the second threshold value and greater than the minimum temperature value that needs to be satisfied to enter the constant current charging stage, in other words, the temperature of the device to be charged may be satisfied above In the first preset interval of the description. Greater than the second threshold and less than the first threshold may also refer to the second preset interval described above.
  • the embodiments of the present application may set a plurality of temperature points A, B, C, D, and E, and the temperature points A, B, C, D, and E sequentially increase, that is, A ⁇ B ⁇ C ⁇ D ⁇ E ,
  • a charging current a is set in the temperature interval [A,C]
  • a charging current b is set in the temperature interval [C,D]
  • a>b and after the temperature exceeds D, the charging device is gradually reduced by the charging current Charge it.
  • the temperature of the device to be charged may be detected first, and when the temperature of the device to be charged meets between [A, D], the charging mode is entered. Further, it is determined whether the temperature of the device to be charged is in the [A, C] or [C, D] interval. When the temperature of the device to be charged is in the [A, C] interval, the device to be charged is charged with the charging current a Charging; when the temperature of the device to be charged is in the range of [C, D], charge the charging device with the charging current b. During the process of charging the device to be charged with the charging current a, the temperature of the device to be charged may slowly increase and rise above the temperature C.
  • the charging current is reduced, and the device to be charged is charged with the charging current b.
  • the temperature of the device to be charged may increase or decrease, or there may be a situation where it remains stable.
  • the device to be charged may be charged in a step-by-step current reduction method.
  • the device to be charged can be recharged with the charging current a.
  • the device to be charged can be continuously charged with the charging current b.
  • a preset minimum charging current can be set.
  • D the temperature of the device to be charged
  • c the preset minimum charging current
  • the temperature of the device to be charged can be lowered in time to avoid charging the device to be charged all the time, causing the temperature of the device to be charged to be too high, affecting the user experience, and the temperature is too high, and there are some other unsafe factors, such as Easy to cause an explosion, etc.
  • the temperature E may be the maximum temperature value.
  • the charging mode may be exited.
  • the charging mode is immediately exited, which can reduce potential safety hazards .
  • a temperature point B can be set in the temperature [A, C] interval. After the temperature of the device to be charged drops below the temperature B, it can return to the charging current a to charge the device to be charged.
  • the device to be charged may be charged in a direct charging mode or a normal charging mode.
  • the direct charging charging method can be understood as a fast charging charging mode.
  • the two charging modes will be described in detail below.
  • the temperature of the device to be charged can be monitored in real time, and the charging current can be continuously adjusted according to the temperature state of the device to be charged, to determine the optimal charging current in the current charging stage.
  • the current charges the device to be charged.
  • FIG. 4 illustrates the charging mechanism of the present application by taking the constant current charging stage as an example.
  • five temperature point thresholds can be set, such as setting temperature points A, B, C, D, and E, and the temperature points A, B, C, D, and E sequentially increase, A ⁇ B ⁇ C ⁇ D ⁇ E.
  • a plurality of charging currents such as charging currents a, b, and c, may be provided, and the charging currents a, b, and c decrease in sequence, and a ⁇ b ⁇ c.
  • S502 Detect the temperature of the device to be charged, and determine whether the temperature of the device to be charged can meet the conditions for entering constant current charging. For example, when the temperature T of the device to be charged satisfies A ⁇ T ⁇ D, it is determined that the temperature of the device to be charged satisfies the constant current charging condition.
  • the device to be charged may be charged with a charging current not greater than a.
  • the charging device can be charged with the charging current a.
  • the maximum charging current used for charging the device to be charged is the charging current a, in other words, the charging current a is the maximum limiting current.
  • the device to be charged may be charged with the charging current b.
  • Charging with a charging current b can also be understood as charging with a charging current with a maximum charging current of b.
  • the step may be that, if T ⁇ C, the maximum charging current used for charging the device to be charged is the charging current b, in other words, the charging current b is the maximum limiting current.
  • the temperature of the device to be charged can also be detected in real time. Further, it can be detected whether the temperature T of the device to be charged decreases or increases. For example, it is determined whether T ⁇ B or T ⁇ D.
  • the charging current can be increased.
  • T ⁇ B it means that when charging with charging current b, the temperature of the device to be charged drops, and the calorific value of the device to be charged is less than the heat dissipation. At this time, the charging current can be appropriately increased to increase the charging speed without causing The temperature of the device to be charged increases rapidly, which can enhance the user experience.
  • T ⁇ D the charging current can be reduced.
  • T ⁇ D it means that when charging with charging current b, the temperature of the device to be charged continues to rise, and the calorific value of the device to be charged is equal to the heat dissipation. If you continue to charge with charging current b, it may cause potential safety hazards. Reduce the charging current to ensure safety.
  • the method of reducing the charging current may adopt the method of gradually reducing the current as described above. Every time t, the charging current ⁇ I is reduced.
  • the temperature of the device to be charged can be monitored in real time. Determine whether the temperature of the device to be charged has decreased or has been increasing. In the case of a temperature drop, it can be further determined whether the temperature T satisfies T ⁇ B. When the temperature rises, it can continue to judge whether the temperature is always higher than the temperature D.
  • the charging current can be increased to charge with the charging current a.
  • repeat S510 to gradually reduce the charging current until the charging current decreases to less than the charging current c, or the temperature of the device to be charged is higher than the temperature E.
  • the constant current charging mode can be exited.
  • the constant current charging stage may be exited. This can ensure the safety of the device to be charged.
  • FIG. 4 is only described with 5 temperature points and 3 charging currents.
  • the embodiment of the present application is not limited to this.
  • the embodiment of the present application may also set more or less temperature points and charging currents to treat the charging device The charging process is optimized.
  • the embodiment of the present application does not specifically limit the manner of adjusting the charging current.
  • the charging current can be adjusted by the wireless charging device, and temperature feedback information can be sent to the wireless charging device to instruct the wireless charging device to adjust the transmission power of the wireless charging signal.
  • the adjustment of the charging current may be implemented by the power supply device, and temperature feedback information may be sent to the power supply device to instruct the power supply device to adjust its output power.
  • the temperature feedback information is feedback information corresponding to the temperature of the device to be charged.
  • the charging method of the embodiment of the present application may be applied to a charging device, and the charging device may be, for example, a device to be charged, or the charging device is a chip with a wireless charging signal receiving function.
  • the charging device may include a communication control circuit. When the temperature of the device to be charged is greater than the first threshold, the communication control circuit may send temperature feedback information to the wireless charging device to instruct the wireless charging device to reduce the transmission power of the wireless charging signal. Current.
  • the current corresponding to the transmission power of the wireless charging signal can be understood as the magnitude of the output voltage and/or output current after the wireless charging signal transmitted by the wireless transmitting circuit is received by the wireless receiving circuit and converted by the wireless receiving circuit.
  • the temperature feedback information may include the difference between the temperature of the device to be charged and the first threshold.
  • the wireless charging device can reduce the current corresponding to the wireless charging signal. For example, multiple gears can be set for the transmission power of the wireless charging device, and the current per gear can be ⁇ I. Each time the wireless charging device receives the difference, it reduces the current by one gear.
  • the temperature feedback information may include adjustment information used to instruct the wireless charging device to adjust the transmission power of the wireless charging signal, for example, the adjustment information may be used to instruct the wireless charging device to increase or decrease the output corresponding to the wireless charging signal Current. For example, when the temperature of the device to be charged exceeds the first threshold, the adjustment information can be used to instruct the wireless charging device to reduce the output current corresponding to the wireless charging signal; when charging the battery with the reduced current, if the device to be charged The temperature of drops below the second threshold, such as the temperature point B described above. At this time, the adjustment information can be used to instruct the wireless charging device to increase the current corresponding to the wireless charging signal.
  • the adjustment information can be used to instruct the wireless charging device to increase the current corresponding to the wireless charging signal.
  • the communication control circuit may send temperature feedback information to the power supply device to instruct the power supply device to reduce its output current.
  • the temperature feedback information may include the difference between the temperature of the device to be charged and the first threshold.
  • the power supply device can reduce the output current of the power supply device. For example, multiple gears can be set for the output current of the power supply device, and the current every gear can be ⁇ I.
  • the power supply device may not receive the difference once and reduce the current by one gear.
  • the temperature feedback information may include adjustment information, which may instruct the power supply device to adjust its output current.
  • the adjustment information may be used to instruct the power supply device to increase or decrease its output current.
  • the adjustment information can be used to instruct the power supply device to reduce its output current; when the battery is charged with the reduced current, if the temperature of the device to be charged drops to Less than the second threshold, such as the temperature point B described above, at this time, the adjustment information may be used to instruct the power supply device to increase its output current.
  • the communication control circuit may also adjust the charging current using a similar method as described above. For brevity, I will not repeat them here.
  • FIG. 5 is a schematic diagram of a charging device 600 provided by an embodiment of the present application.
  • the device embodiments and the method embodiments correspond to each other. Therefore, for the undescribed parts, refer to the previous method embodiments.
  • the charging device 600 includes a communication control circuit 610 and a charging circuit 620.
  • the charging device in the embodiment of the present application may refer to a device to be charged, or the charging device may only include a chip for receiving a wireless charging signal.
  • the communication control circuit 610 is used to determine that the battery enters the constant current charging stage after the voltage and temperature of the battery meet the preset conditions, and detect the temperature of the device to be charged, when the temperature of the device to be charged is greater than the first At the threshold, the charging current is reduced by ⁇ I.
  • the charging circuit 620 is used to charge the battery with a charging current after reducing ⁇ I.
  • the communication control circuit 610 is used to reduce the charging current by ⁇ I every time t when the temperature of the device to be charged is greater than the first threshold, until the temperature of the device to be charged is less than the The first threshold.
  • the communication control circuit is used to reduce the charging current by ⁇ I every time t when the temperature of the device to be charged is greater than the first threshold, until the reduced charging current is less than the preset minimum charge Current.
  • the communication control circuit 610 is further configured to end charging when the reduced charging current is less than the preset minimum charging current and the temperature of the device to be charged is greater than the first threshold.
  • the communication control circuit is further configured to charge the battery with a first charging current when the temperature of the device to be charged is less than a second threshold; when the temperature of the device to be charged is greater than a second threshold And is smaller than the first threshold, the battery is charged with the second charging current, wherein the second threshold is smaller than the first threshold, and the first charging current is larger than the second charging Current.
  • the communication control circuit is further used for charging the battery with the second charging current, if the temperature of the device to be charged drops below the second threshold, the The first charging current charges the battery.
  • the communication control circuit is further used to charge the battery with the charging current after reducing ⁇ I, if the temperature of the device to be charged drops below the second threshold, The first charging current charges the battery.
  • the communication control circuit is further configured to end charging when the temperature of the device to be charged is greater than a third threshold, and the third threshold is greater than the first threshold.
  • the communication control circuit is further configured to send temperature feedback information to the wireless charging device when the temperature of the device to be charged is greater than the first threshold to instruct the wireless charging device to correspond to the wireless charging signal
  • the output current decreases by ⁇ I, where the temperature feedback information is feedback information corresponding to the temperature of the device to be charged.
  • the temperature feedback information includes adjustment information used to instruct the wireless charging device to reduce the output current corresponding to the wireless charging signal.
  • the communication control circuit is further configured to send temperature feedback information to the power supply device when the temperature of the device to be charged is greater than the first threshold to instruct the power supply device to lower the power supply device
  • the temperature feedback information is feedback information corresponding to the temperature of the device to be charged.
  • the temperature feedback information includes adjustment information, and the adjustment information is used to instruct the power supply device to reduce the output current of the power supply device.
  • the temperature feedback information is used to indicate the difference between the temperature of the device to be charged and the first threshold.
  • FIG. 6 is a schematic structural diagram of a wireless charging system provided by an embodiment of the present application. The charging process of the embodiment of the present application will be described in detail below in conjunction with FIG. 6.
  • the wireless receiving circuit 231 can receive the wireless charging signal transmitted by the wireless transmitting circuit 221 in the wireless charging device 220, and convert the wireless charging signal into the output voltage and output current of the wireless receiving circuit to charge the battery.
  • the second communication control circuit 235 may be used to communicate with the first communication control circuit 222 to instruct the first communication control circuit 222 to adjust the transmission power of the wireless transmission circuit 221.
  • the second communication control circuit 235 can detect or monitor the temperature of the device to be charged in real time.
  • the second communication control circuit 235 can detect or monitor the temperature of the charging device in various ways. For example, the temperature of the charging device can be detected through the detection circuit, or the temperature of the charging device can be detected in other ways. The application examples are not limited to this.
  • the second communication control circuit 235 can also detect the voltage of the battery. When the voltage and temperature of the battery meet the preset conditions, the first communication control circuit 222 may be sent instruction information to instruct the first communication control circuit 222 to adjust the transmission power of the wireless transmission circuit 221 to charge the battery at a constant current.
  • the second communication control circuit 235 After entering the constant current charging, if the second communication control circuit 235 detects that the temperature of the device to be charged is in the interval [A, C] shown in FIG. 5, it may send instruction information to the first communication control circuit 222 to indicate wireless
  • the transmitting circuit can transmit the wireless charging signal according to the maximum charging current, so that the charging circuit can charge the battery according to the maximum charging current a.
  • the second communication control circuit 235 can detect the temperature of the device to be charged in real time, and can send temperature feedback to the first communication control circuit when the temperature of the device to be charged exceeds the temperature point C Information to indicate that the current corresponding to the wireless charging signal transmitted by the wireless transmitting circuit is reduced, so that the charging circuit can charge the battery with the charging current b.
  • the wireless charging device 220 may set multiple gears for the output current corresponding to the transmission power of the wireless transmission circuit, and after receiving the temperature feedback information sent by the second communication control circuit, the gear of the output current may be reduced by one grid, In this way, the output current corresponding to the transmission power can be reduced to near the charging current b by one adjustment, which can save the loop response time.
  • the second communication control circuit 235 may continuously detect the temperature of the device to be charged, and when it is detected that the temperature of the device to be charged drops below the temperature point B, the first communication The control circuit sends temperature feedback information to instruct to increase the output current corresponding to the wireless charging signal transmitted by the wireless transmitting circuit, so that the charging circuit can recharge the battery with the charging current a. If the wireless charging device sets multiple gears for the output current corresponding to the transmission power of the wireless transmission circuit, after receiving the temperature feedback information sent by the second communication control circuit, the gear of the output current can be increased by one grid, so The output current corresponding to the transmission power can be increased to around the charging current a by one adjustment, which can save the loop response time.
  • the second communication control circuit may send temperature feedback information to the first communication control circuit to indicate The wireless transmitting circuit reduces the output current corresponding to the transmitted wireless charging signal by ⁇ I.
  • the second communication control circuit may also instruct the wireless transmission circuit to reduce the charging current by ⁇ I every time t.
  • the wireless charging device can set multiple gears for the charging current, and reduce the gear by one gear every time t.
  • the second communication control circuit may instruct the wireless transmitting circuit to maintain the current charging current to charge the battery.
  • the second communication control circuit may instruct the wireless transmitting circuit to stop charging the battery.
  • the second communication control circuit In the process of lowering the charging current by ⁇ I to charge the battery, if the second communication control circuit detects that the temperature of the device to be charged is less than the temperature point B, it may instruct the wireless transmitting circuit to charge the battery with the charging current a.
  • the second communication control circuit may instruct the wireless transmission circuit to stop charging the battery to ensure the safety of the battery.
  • the manner of adjusting the output power of the wireless transmitting circuit 221 may include any one of the following two ways and a combination of several ways:
  • the output power of the wireless transmission circuit 221 can be adjusted by adjusting the tuning frequency of the resonance circuit and/or the duty ratio of the switching tube of the inverter circuit. Adjustment.
  • the output power of the wireless transmitting circuit 221 is adjusted.
  • the second communication control circuit may communicate with the power supply device to instruct the power supply device to adjust its output current.
  • the second communication control circuit When the second communication control circuit detects that the voltage and temperature of the battery satisfy the preset condition, it may send instruction information to the power supply device to instruct the power supply device to adjust the output power of the power supply device to perform constant current charging of the battery.
  • the second communication control circuit may instruct the power supply device to adjust its output current so that the charging circuit can charge the battery according to the maximum charging current a. If the temperature of the device to be charged is in the interval [C, D], the second communication control circuit may instruct the power supply device to adjust its output current, so that the charging circuit can charge the battery according to the charging current b.
  • the second communication control circuit may send temperature feedback information to the power supply device to instruct the power supply device to reduce the output current by ⁇ I.
  • the power supply device can set multiple gears of multiple output currents, and reduce the gear by one gear every time t.
  • the second communication control circuit may instruct the power supply device to maintain the current charging current to charge the battery.
  • the second communication control circuit may instruct the power supply device to stop charging the battery.
  • the second communication control circuit In the process of lowering the charging current by ⁇ I to charge the battery, if the second communication control circuit detects that the temperature of the device to be charged is less than the temperature point B, it may instruct the power supply device to recharge the battery with the charging current a.
  • the second communication control circuit may instruct the power supply device to stop charging the battery to ensure the safety of the battery.
  • the solution described in FIG. 6 can be combined with the solution described in FIG. 4, for example, the setting method of each temperature point described in FIG. 4 and the charging process are also applicable to the solution described in FIG. 6.
  • An embodiment of the present application further provides a device to be charged, the device to be charged may include a battery, and the charging device in any one of the implementation manners described above.
  • an embodiment of the present application further provides a chip system 700.
  • the chip system 700 includes a processor 710 and a memory 720.
  • the memory 720 is used to store instructions, and the processor 710 is used to execute the instructions stored by the memory 720.
  • the charging device shown in FIG. 6 or the chip system shown in FIG. 7 may be used to perform related operations or processes in the above method embodiments, and each of the charging device shown in FIG. 6 or the chip system shown in FIG. 7
  • the operations and/or functions of the circuits or units are respectively for implementing the corresponding processes in the above method embodiments, and for the sake of brevity, they will not be repeated here.
  • FIG. 8 is a schematic structural diagram of another wireless charging system provided by an embodiment of the present application.
  • the wireless charging device 220 may further include a charging interface 223, and the charging interface 223 may be used to connect to an external power supply device 210.
  • the wireless transmitting circuit 221 can also be used to generate a wireless charging signal according to the output voltage and output current of the power supply device 210.
  • the charging interface 223 may be a universal serial bus (USB) interface.
  • the USB interface may be, for example, a USB2.0 interface, a micro USB interface, or a USB TYPE-C interface.
  • the charging interface 223 may also be a lightning interface, or any other type of parallel port and/or serial port that can be used for charging.
  • the embodiment of the present application does not specifically limit the communication mode between the first communication control circuit 222 and the power supply device 210.
  • the first communication control circuit 222 may be connected to the power supply device 210 through a communication interface other than the charging interface, and communicate with the power supply device 210 through the communication interface.
  • the first communication control circuit 222 may communicate with the power supply device 210 in a wireless manner.
  • the first communication control circuit 222 may perform near field communication (NFC) with the power supply device 210.
  • NFC near field communication
  • the first communication control circuit 222 can communicate with the power supply device 210 through the charging interface 223 without the need to provide an additional communication interface or other wireless communication modules, which can simplify the implementation of the wireless charging device 220.
  • the charging interface 223 is a USB interface, and the first communication control circuit 222 may communicate with the power supply device 210 based on the data lines (such as D+ and/or D- lines) in the USB interface.
  • the charging interface 223 may be a USB interface (such as a USB Type-C interface) that supports a power delivery (PD) communication protocol, and the first communication control circuit 222 and the power supply device 210 may communicate based on the PD communication protocol.
  • PD power delivery
  • the charging method shown in FIG. 8 is similar to the above description, and to avoid repetition, it will not be repeated here. It should be noted that the second communication control circuit 235 can detect the temperature of the device to be charged by the detection circuit 234 shown in FIG. 8.
  • the technical solutions of the embodiments of the present application may be applied in the wireless charging process, or may also be applied in the priority charging process.
  • the following uses wireless charging as an example to describe the technical solutions of the embodiments of the present application in detail.
  • the wireless charging device 220 may support the first wireless charging mode and the second wireless charging mode.
  • the wireless charging device 220 charges the device to be charged faster than the wireless charging device 220 The charging speed of the device to be charged in the second wireless charging mode.
  • the process of charging the device to be charged described above may be charging in the first charging mode or charging in the second charging mode.
  • the second wireless charging mode may be referred to as an ordinary wireless charging mode, for example, it may be a traditional wireless charging mode based on the QI standard, PMA standard, or A4WP standard.
  • the first wireless charging mode may be a fast wireless charging mode.
  • the ordinary wireless charging mode may refer to a wireless charging mode in which the transmission power of the wireless charging device 220 is small (usually less than 15W, and the commonly used transmission power is 5W or 10W).
  • a full-capacity battery is fully charged (For example, a battery with a capacity of 3000 mAh), it usually takes several hours; while in the fast wireless charging mode, the transmission power of the wireless charging device 220 is relatively large (usually greater than or equal to 15W).
  • the charging time required for the wireless charging device 220 to fully charge the battery of the same capacity in the fast wireless charging mode can be significantly shortened and the charging speed is faster.
  • the device to be charged 230 further includes: a second charging channel 236.
  • the second charging channel 236 may be a wire.
  • a conversion circuit 237 may be provided on the second charging channel 236 to perform voltage control on the DC power output by the wireless receiving circuit 231 to obtain the output voltage and output current of the second charging channel 236 to charge the battery 232.
  • the conversion circuit 237 can be used as a step-down circuit and output constant-current and/or constant-voltage electrical energy. In other words, the conversion circuit 237 can be used for constant voltage and/or constant current control of the battery charging process.
  • the wireless transmitting circuit 221 may use a constant transmission power to transmit the electromagnetic signal. After the wireless receiving circuit 231 receives the electromagnetic signal, the conversion circuit 237 processes the voltage and The current is input to the battery 232 to charge the battery 232. It should be understood that, in some embodiments, the constant transmit power does not necessarily mean that the transmit power remains completely unchanged, and it can be varied within a certain range, for example, the transmit power is 7.5W and 0.5W floats up and down.
  • the second communication control circuit 235 is also used to communicate with the first communication control circuit according to the detected temperature of the device to be charged 230.
  • the second communication control circuit 235 may send the temperature of the device to be charged 230 to the wireless charging device 220 in the form of a data packet.
  • the wireless charging device 220 and the device to be charged 230 can perform wireless charging according to the Qi standard. Therefore, the data signal containing the temperature information can be coupled to the coil of the wireless receiving circuit 231 by signal modulation to be sent to the coil of the wireless transmitting circuit 221, and then transmitted to the first communication control circuit 222.
  • the first communication control circuit 222 adjusts the transmission parameters of the wireless transmission circuit 221 according to the temperature information, for example, the operating frequency of the transmission coil.
  • the communication between the first communication control circuit 222 and the second communication control circuit 235 may use Bluetooth communication, wireless fidelity (Wi-Fi) communication, or reverse Backscatter modulation (or power load modulation) communication, short-range wireless communication based on high carrier frequency, optical communication, ultrasonic communication, ultra-wideband communication, mobile communication and other wireless communication methods.
  • Wi-Fi wireless fidelity
  • reverse Backscatter modulation or power load modulation
  • the communication between the first communication control circuit 222 and the second communication control circuit 235 may also be performed by means of wired communication with a data interface.
  • the control functions in the first communication control circuit 222 and the second communication control circuit 235 may be implemented by, for example, a micro control unit (MCU).
  • the first communication control circuit 222 and the second communication control circuit 235 may be used to control the charging current during charging of the charging device.
  • the charging method for charging the battery 232 through the first charging channel 233 is the first wireless charging mode
  • the method for charging the battery 232 through the second charging channel 236 is called the second wireless charging mode.
  • the wireless charging device and the device to be charged may determine whether to charge the battery 232 in the first wireless charging mode or the second wireless charging mode through handshake communication.
  • the maximum transmission power of the wireless transmission circuit 221 may be the first transmission power value.
  • the maximum transmission power of the wireless transmission circuit 221 may be the second transmission power value.
  • the first transmission power value is greater than the second transmission power value, and therefore, the charging speed of the device to be charged in the first wireless charging mode is greater than the second wireless charging mode.
  • the second communication control circuit 235 can also be used to control the switching between the first charging channel 233 and the second charging channel 236.
  • a switch 238 may be provided on the first charging channel 233, and the second communication control circuit 235 may control the first charging channel 233 and the second charging channel 236 by controlling the switch 238 on and off Switching between.
  • the wireless charging device 220 may include a first wireless charging mode and a second wireless charging mode, and the wireless charging device 220 in the first wireless charging mode charges the device 230 to be charged faster than The wireless charging device 220 charges the charging speed of the device 230 to be charged in the second wireless charging mode.
  • the device to be charged 230 can control the first charging channel 233 to work; when the wireless charging device 220 uses the second wireless charging mode to charge the device to be charged When the battery in 230 is charged, the device to be charged 230 may control the second charging channel 236 to work.
  • the second communication control circuit 235 can switch between the first charging channel 233 and the second charging channel 236 according to the charging mode.
  • the second communication control circuit 235 controls the voltage conversion circuit 239 on the first charging channel 233 to work.
  • the second communication control circuit 235 controls the conversion circuit 237 on the second charging channel 236 to operate.
  • the wireless charging device 220 may communicate with the device to be charged 230 to negotiate the charging mode between the wireless charging device 220 and the device to be charged 230.
  • the first communication control circuit 222 in the wireless charging device 220 and the second communication control circuit 235 in the device to be charged 230 can also exchange many other communication information.
  • the first communication control circuit 222 and the second communication control circuit 235 can also be used to interactively enter information such as indication information for overvoltage protection or overcurrent protection.
  • Power transmission efficiency information (the power transmission efficiency information can be used to indicate the power transmission efficiency between the wireless transmitting circuit 221 and the wireless receiving circuit 231).
  • the communication between the second communication control circuit 235 and the first communication control circuit 222 may be unidirectional communication or bidirectional communication, which is not specifically limited in this embodiment of the present application.
  • the function of the second communication control circuit may be implemented by the application processor of the device to be charged 230, and thus, hardware costs may be saved. Alternatively, it can also be realized by an independent control chip, which can improve the reliability of control.
  • the embodiments of the present application may integrate the wireless receiving circuit 232 and the voltage conversion circuit 239 in the same wireless charging chip, which may improve the integration of the device to be charged and simplify the implementation of the device to be charged.
  • the functions of traditional wireless charging chips can be expanded to support charging management functions.
  • the wireless transmitting circuit generates an electromagnetic signal based on 10V/2A
  • the wireless receiving circuit converts the electromagnetic signal into an output voltage/output current of 10V/2A. Since the current is reduced from 4A to 2A, the heat generated during the power transmission process Will be reduced accordingly. Therefore, the embodiments of the present application may also use multiple cells connected in series to reduce the heat generated by the wireless transmitting circuit 221 and the wireless receiving circuit 231.
  • N 2 as an example.
  • the value of N may be 3 or a positive integer of 3 or more.
  • the more cells connected in series the smaller the amount of heat generated by the electrical energy passing through the wireless transmitting circuit 221 and the wireless receiving circuit 231.
  • the embodiment of the present application in order to ensure the charging speed and further alleviate the heating phenomenon of the device to be charged 230, the embodiment of the present application further reforms the battery structure inside the device to be charged 230 and introduces multiple cells connected in series Compared with the single cell solution, if you want to achieve the same charging speed, the charging current required by the multi-cell battery is 1/N of the charging current required by the single-cell battery (N is in the device 230 to be charged The number of batteries connected in series), in other words, under the premise of ensuring the same charging speed, the embodiment of the present invention can greatly reduce the size of the charging current, thereby further reducing the calorific value of the device 230 to be charged during the charging process.
  • the multi-cell batteries in an embodiment of the present application may be batteries with the same or similar specifications and parameters.
  • the batteries with the same or similar specifications are convenient for unified management, and selecting batteries with the same specifications or similar parameters can increase the number of cells.
  • the electrical energy output by the first charging channel or the second charging channel can be used to charge the multi-cell batteries connected in series with each other.
  • a step-down circuit may be used to step down the voltage of the multi-cell cells to perform system power supply to the charging device 230, or a single-cell cell may also be used for system power supply.
  • the system if the system needs to be powered, it can be divided into a path directly through the charging management circuit to supply power to the system.
  • the multi-cell batteries can be balanced by the equalizing circuit.
  • the equalization circuit There are many ways to implement the equalization circuit. For example, you can connect loads at both ends of the cell and consume the power of the cell to keep it consistent with the power of other cells, thereby keeping the voltage of each cell consistent.
  • a battery with a high power can be used to charge a battery with a low power for equalization until the voltage of each cell is the same.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, digital video disc (DVD)), or semiconductor media (eg, solid state disk (SSD)), etc. .
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

提供一种充电方法和装置、待充电设备、存储介质及芯片系统。该充电方法包括：当电池的电压和待充电设备的温度满足预设条件后，确定所述电池进入恒流充电阶段（S310）；检测所述待充电设备的温度（S320）；当所述待充电设备的温度大于第一阈值时，将充电电流降低△I（S330）；以降低△I之后的充电电流对所述待充电设备进行充电（S340）。所述充电方法，在对待充电设备进行充电时，会对待充电设备的温度设置一个第一阈值，当待充电设备的温度高于该第一阈值后，降低充电电流进行充电，这样能够避免待充电设备的温度过高的现象。

Description

充电方法和装置、待充电设备、存储介质及芯片系统 技术领域
本申请涉及充电领域，更为具体地，涉及一种充电方法和装置、待充电设备、存储介质及芯片系统。
背景技术
目前，待充电设备(例如智能手机)越来越受到消费者的青睐，但是待充电设备耗电量大，需要经常充电。
为了提高充电速度，一种可行的方案是采用大电流为待充电设备进行充电。充电电流越大，充电速度越快，但待充电设备的发热问题也越严重。
因此，如何降低待充电设备的发热是目前亟待解决的问题。
发明内容
本申请提供一种充电方法和装置、待充电设备、存储介质及芯片系统，能够控制待充电设备的发热。
第一方面，提供一种充电方法，包括：当电池的电压和待充电设备的温度满足预设条件后，确定所述电池进入恒流充电阶段；检测所述待充电设备的温度；当所述待充电设备的温度大于第一阈值时，将充电电流降低△I；以降低△I之后的充电电流对所述待充电设备进行充电。
第二方面，提供一种充电装置，包括：通信控制电路，用于当电池的电压和温度满足预设条件后，确定所述电池进入恒流充电阶段，并检测所述待充电设备的温度，当所述待充电设备的温度大于第一阈值时，将充电电流降低△I；充电电路，用于以降低△I之后的充电电流对所述电池进行充电。
第三方面，提供一种存储介质，包括：指令，当所述程序被处理器运行时，第一方面及第一方面中任一实现方式所述的方法被执行。
第四方面，提供一种芯片系统，包括：存储器，用于存储指令；处理器，用于从所述存储器中调用并运行所述指令，使得安装有所述芯片系统的充电装置执行第一方面及第一方面中任一实现方式所述的方法。
本申请提供的技术方案，在对待充电设备进行充电时，会对待充电设备的温度设置一个第一阈值，当待充电设备的温度高于该第一阈值后，降低充电电流进行充电，这样能够避免待充电设备的温度过高的现象。
附图说明
图1是一种无线充电系统的示意图。
图2是本申请一个实施例提供的充电方法的示意图。
图3是本申请另一实施例提供的另一种充电方法的示意性流程图。
图4是本申请实施例提供的另一种充电方法的示意性流程图。
图5是本申请实施例提供的一种充电装置的示意图。
图6是本申请实施例提供的另一种无线充电系统的示意性结构图。
图7是本申请实施例提供的一种芯片系统的示意图。
图8是本申请实施例提供的另一种无线充电系统的示意性结构图。
图9是本申请实施例提供的一种待充电设备的示意性结构图。
具体实施方式
待充电设备在充电过程中，由于各功能模块的发热的原因，会导致待充电设备的温度 升高。如果待充电设备的温度过高，可能会引发待充电设备异常，影响用户体验。
目前对待充电设备的充电方式可以包括有线充电方式和无线充电方式。有线充电方式可以通过线缆将电源提供设备与待充电设备相连，并通过线缆将电源提供设备的输出功率传输至待充电设备，为待充电设备进行充电。
在通过有线充电方式对待充电设备进行充电的过程中，待充电设备内部的充电管理电路可以对电源提供设备的输出功率进行管理，并将电源提供设备的输出电压和输出电流传输至电池，为电池进行充电。待充电设备内部的充电管理电路在充电过程中，会产生大量的热量，导致待充电设备的温度升高，影响用户体验。
无线充电方式可以基于无线充电技术对待充电设备进行充电，无线充电技术不需要电缆即可完成功率的传输，能够简化充电准备阶段的操作。
传统的无线充电技术一般将电源提供设备(如适配器)与无线充电装置(如无线充电底座)相连，并通过该无线充电装置将电源提供设备的输出功率以无线的方式(如电磁波)传输至待充电设备，对待充电设备进行无线充电。
按照无线充电原理不同，无线充电方式主要分为磁耦合(或电磁感应)、磁共振以及无线电波三种方式。目前，主流的无线充电标准包括QI标准、电源实物联盟(power matters alliance，PMA)标准、无线电源联盟(alliance for wireless power，A4WP)。QI标准和PMA标准均采用磁耦合方式进行无线充电。A4WP标准采用磁共振方式进行无线充电。
下面结合图1，对一实施例的无线充电方式进行介绍。
如图1所示，无线充电系统包括电源提供设备110、无线充电装置120以及待充电设备130，其中无线充电装置120例如可以是无线充电底座，待充电设备130例如可以是终端。
电源提供设备110与无线充电装置120连接之后，会将电源提供设备110的输出电压和输出电流传输至无线充电装置120。
无线充电装置120可以通过内部的无线发射电路121将电源提供设备110的输出电压和输出电流转换成无线充电信号(电磁信号)进行发射。例如，该无线发射电路121可以将电源提供设备110的输出电流转换成交流电，并通过发射线圈或发射天线将该交流电转换成无线充电信号。
待充电设备包括但不限于：被设置成经由有线线路连接(如经由公共交换电话网络(public switched telephone network，PSTN)、数字用户线路(digital subscriber line，DSL)、数字电缆、直接电缆连接，以及/或另一数据连接/网络)和/或经由(例如，针对蜂窝网络、无线局域网(wireless local area network，WLAN)、诸如手持数字视频广播(digital video broadcasting handheld，DVB-H)网络的数字电视网络、卫星网络、调幅-调频(amplitude modulation-frequency modulation，AM-FM)广播发送器，以及/或另一通信终端的)无线接口接收/发送通信信号的装置。被设置成通过无线接口通信的终端可以被称为“无线通信终端”、“无线终端”以及/或“移动终端”。移动终端的示例包括，但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(personal communication system，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(global positioning system,GPS)接收器的个人数字助理(personal digital assistant，PDA)；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。在某些实施例中，待充电设备可指移动终端是设备或手持终端设备，如手机、pad等。在某些实施例中，本申请实施例提及的待充电设备可以是指芯片系统，在该实施例中，待充电设备的电池可以属于或也可以不属于该芯片系统。
下面以无线充电装置、待充电设备为例进行描述。
待充电设备130可以通过无线接收电路131接收无线发射电路121发射的无线充电信 号，并将该无线充电信号转换成无线接收电路131的输出电压和输出电流。例如，该无线接收电路131可以通过接收线圈或接收天线将无线发射电路121发射的无线充电信号转换成交流电，并对该交流电进行整流和/或滤波等操作，将该交流电转换成无线接收电路131的输出电压和输出电流。
在一些实施例中，在无线充电之前，无线充电装置120可与待充电设备130预先协商无线发射电路121的发射功率。假设无线充电装置120与待充电设备130之间协商的功率为5W，则无线接收电路131的输出电压和输出电流一般为5V和1A。假设无线充电装置120与待充电设备130之间协商的功率为10.8W，则无线接收电路131的输出电压和输出电流一般为9V和1.2A。
若无线接收电路131的输出电压不适合直接加载到电池133两端，则需要先经过待充电设备130内的变换电路132进行恒压和/或恒流控制，以得到待充电设备130内的电池133所预期的充电电压和/或充电电流。
变换电路132可用于对无线接收电路131的输出电压进行变换，以使得变换电路132的输出电压和/或输出电流满足电池133所预期的充电电压和/或充电电流的需求。
作为一种示例，该变换电路132例如可以是充电集成电路(integrated circuit，IC)，或者可以为电源管理电路。在电池133的充电过程中，变换电路132可用于对电池133的充电电压和/或充电电流进行管理。该变换电路132可以包含电压反馈功能，和/或，电流反馈功能，以实现对电池133的充电电压和/或充电电流的管理。
在一些实施例中，电池的充电过程可包括涓流充电阶段，恒流充电阶段和恒压充电阶段中的一个或者多个。在涓流充电阶段，变换电路132可利用电流反馈功能使得在涓流充电阶段进入到电池133的电流满足电池133所预期的充电电流大小(譬如第一充电电流)。在恒流充电阶段，变换电路132可利用电流反馈功能使得在恒流充电阶段进入电池133的电流满足电池133所预期的充电电流大小(譬如第二充电电流，该第二充电电流可大于第一充电电流)。在恒压充电阶段，变换电路132可利用电压反馈功能使得在恒压充电阶段加载到电池133两端的电压的大小满足电池133所预期的充电电压大小。
作为一种示例，当无线接收电路131的输出电压大于电池133所预期的充电电压时，变换电路132可用于对无线接收电路131的输出电压进行降压处理，以使降压转换后得到的充电电压满足电池133所预期的充电电压需求。作为又一种示例，当无线接收电路131的输出电压小于电池133所预期的充电电压时，变换电路132可用于对无线接收电路131的输出电压进行升压处理，以使升压转换后得到的充电电压满足电池133所预期的充电电压需求。
作为又一示例，以无线接收电路131输出5V恒定电压为例，当电池133包括单个电芯时，变换电路132(例如Buck降压电路)可对无线接收电路131的输出电压进行降压处理，以使得降压后得到的充电电压满足电池133所预期的充电电压需求。
作为又一示例，以无线接收电路131输出5V恒定电压为例，当电池133包括相互串联的两节或两节以上电芯时，变换电路132(例如Boost升压电路)可对无线接收电路131的输出电压进行升压处理，以使得升压后得到的充电电压满足电池133所预期的充电电压需求。
变换电路132受限于功率转换效率(也可称为能量转换效率，或电路转换效率)低下的原因，致使未被转换部分的电能以热量的形式散失。这部分热量会聚焦在待充电设备130的内部。待充电设备130的设计空间和散热空间都很小(例如，用户使用的移动终端物理尺寸越来越轻薄，同时移动终端内密集排布了大量的电子元器件以提升移动终端的性能)，这不但提升了变换电路132的设计难度，还会导致聚焦在待充电设备130内的热量很难及时移除，进而引发待充电设备130的异常。
例如，变换电路132上聚集的热量可能会对变换电路132附近的电子元器件造成热干 扰，引发电子元器件的工作异常。又如，变换电路132上聚集的热量，可能会缩短变换电路132及附近电子元件的使用寿命。又如，变换电路132上聚集的热量，可能会对电池133造成热干扰，进而导致电池133充放电异常。又如变换电路132上聚集的热量，可能会导致待充电设备130的温度升高，影响用户在充电时的使用体验。又如，变换电路132上聚集的热量，可能会导致变换电路132自身的短路，使得无线接收电路131的输出电压直接加载在电池133两端而引起充电异常，如果电池133长时间处于过压充电状态，甚至会引发电池133的爆炸，危及用户安全。
此外，在充电过程中，无线发射电路的发射线圈和无线接收电路的接收线圈也会产生大量的热量，造成待充电设备的温度升高。
因此，如何控制待充电设备的发热成为目前亟需解决的问题。
本申请实施例提供一种充电方法，能够控制待充电设备在充电过程中的发热。
如图2所示，图2所示的充电方法包括步骤S210-S220。
S210、根据待充电设备的温度，确定目标充电电流。
其中，待充电设备的温度可以指待充电设备的设备本身的温度，或者也可以指待充电设备中的电池的温度。
可选地，在确定目标充电电流之前，可对待充电设备的温度进行检测。检测待充电设备的温度可以通过检测待充电设备的设备本身的温度来实现，或者可以通过检测电池的温度来实现。
以恒流充电阶段为例，在待充电设备的温度及电压满足预设条件后，确定电池可以进入恒流充电阶段。待充电设备的温度满足预设条件可以指待充电设备的温度满足进入恒流充电阶段的条件，例如，待充电设备的温度满足在16℃～45℃之间。电池的电压满足预设条件，可以指电池的电压满足进入恒流充电阶段的条件，例如，电池的电压满足3.6V～4.35V。
S220、以目标充电电流对所述待充电设备进行充电。
本申请实施例可以根据待充电设备当前的温度状态，确定不同的充电电流，对待充电设备的充电能够以温度为依据来调整，而不是以基本恒定的充电电流对待充电设备进行充电，能够在一定程度上控制待充电设备的发热。
对待充电设备的充电过程可以应用在恒流充电阶段或者其他充电阶段。
以恒流充电阶段为例，在对待充电设备进行恒流充电时，可以根据待充电设备的温度，选择不同的充电电流，对待充电设备进行恒流充电。
在以目标充电电流对待充电设备进行充电之前，还可以对待充电设备的温度以及电池电压进行检测，在待充电设备的温度以及电池的电压满足对应的充电阶段的要求后，再进入对应的充电阶段进行充电。
以恒流充电阶段为例，在待充电设备的温度及电压满足进入恒流充电阶段的条件后，再以目标充电电流对待充电设备进行恒流充电。举例说明，在电池的电压满足在3.6V～4.35V之间，以及待充电设备的温度在16℃～41℃之间时，可以对待充电设备进行恒流充电。
上文仅是对温度和电压进行举例，待充电设备进入恒流充电的条件也可以是其他条件。
步骤210的实现方式有多种，本申请实施例对此不做具体限定。
作为一个示例，可以设置不同的温度区间，并为每个温度区间设置一个充电电流。然后可以根据待充电设备当前所处的温度区间，选择该温度区间对应的充电电流对待充电设备进行充电。
例如，可以在确定目标充电电流之前，确定所述待充电设备的温度所在的预设区间。其中，该预设区间为多个预设区间中的一个预设区间，且该多个预设区间中的每个预设区 间对应一个充电电流。该多个预设区间对应的温度可以均不相同，也就是说，该多个预设区间没有交集，或者该多个预设区间对应的温度没有重叠。在确定待充电设备的温度所在的预设区间之后，可以确定目标充电电流为该预设区间对应的充电电流。
本申请实施例提供的技术方案中，可以通过设置多个温度区间，在不同的温度区间采用不同的充电电流对待充电设备进行充电，能够优化充电方式，灵活地对充电速度和待充电设备的温度进行调节。
可选地，该多个预设区间可以包括第一预设区间和第二预设区间，第一预设区间对应的温度小于第二预设区间对应的温度，且第一预设区间对应的充电电流大于第二预设区间对应的充电电流。
换句话说，当待充电设备的温度在第一预设区间时，确定目标充电电流为第一充电电流。当待充电设备的温度在第二预设区间时，确定目标充电电流为第二充电电流，其中，第一预设区间对应的温度小于第二预设区间对应的温度，第一充电的电流大于第二充电电流。
本申请实施例提供的技术方案，在待充电设备的温度较低时，使用较大的充电电流进行充电，这样能够提高充电速度，保证待充电设备能够被快速地充电，而在待充电设备的温度较高时，以较小的充电电流进行充电，控制待充电设备的发热，这样能够降低待充电设备的温度，从而能够提升用户体验。
通常情况下，充电电流越小，充电功率越大，待充电设备的发热较小。反之，充电电流越大，充电功率越大，待充电设备的发热越严重。因此，在待充电设备的温度较高时，可以通过降低充电电流，减小待充电设备的发热，使得待充电设备的发热量小于散热量，从而降低待充电设备的温度。
上文中的第一预设区间和第二预设区间仅是概括性的描述。实际上，本申请实施例可以设置两个以上的多个预设区间，并为该多个预设区间设置多个充电的电流。其中，每个预设区间可以对应的一个充电电流。在对待充电设备充电时，可以根据待充电设备的温度所在的预设区间，采用待充电设备的温度所在的预设区间对应的充电电流，为待充电设备进行充电。
该多个预设区间的长度可以相同，也可以不同。例如，该多个预设区间可以等间隔设置。又例如，也可以是采用预设区间对应的温度值越大，间隔越小的设置方式，也就是说，在温度较低时，可以将预设区间的跨度设置的较大，而在温度较高时，将温度区间的跨度设置的较小。
该多个充电电流可以是等间隔设置，也可以是非等间隔设置。例如，相邻预设区间对应的充电电流的差值相等。又例如，也可以是采用温度越高，相邻预设区间对应的充电电流的差值越大的设置方式。也就是说，在温度较低时，相邻温度区间对应的充电电流的差值较小，而在温度较高时，相邻温度区间对应的充电电流的差值较大。
下面对温度预设区间和充电电流的设置方式进行更为详细的描述。
以温度预设区间为等间隔设置为例，该多个预设区间的间隔可以均为4℃，也就是说，每隔4℃，设置一个温度档。可选地，每个预设区间对应的充电电流可以是等间隔设置的。例如，当温度在16℃～20℃之间时，可以设置充电电流为2.0A；当温度在20℃～24℃之间时，可以设置充电的电流为1.8A；当温度在24℃～28℃之间时，可以设置充电电流为1.6A；当温度在28℃～32℃之间时，可以设置充电电流为1.4A；当温度在32℃～36℃之间时，可以设置充电电流为1.2A。可选地，每个预设区间对应的充电电流可以是非等间隔设置的。例如，当温度在16℃～20℃之间时，可以设置充电电流为2.0A；当温度在20℃～24℃之间时，可以设置充电的电流为1.9A；当温度在24℃～28℃之间时，可以设置充电电流为1.7A；当温度在28℃～32℃之间时，可以设置充电电流为1.4A；当温度在32℃～36℃之间时，可以设置充电电流为1.0A。
温度越高，相邻预设区间对应的充电电流的差值越大，这样可以在温度较高时，快速地降低待充电设备的温度，及时地将待充电设备的温度调整在合理的范围内，不至于待充电设备的温度过高，提升用户体验。
以温度预设区间为非等间隔设置为例，该多个预设区间随着温度的升高，设置的越来越密。可选地，温度预设区间的间隔可以成等差数列设置。每个预设区间对应的充电电流可以是等间隔设置的，以相邻预设区间对应的充电电流的差值均为0.3A为例。例如，当温度在16℃～32℃之间时，可以设置充电电流为1.8A；当温度在32℃～36℃之间时，可以设置充电电流为1.5A；当温度在36℃～38℃之间时，可以设置充电电流为1.2A。可选地，每个预设区间对应的充电电流可以是非等间隔设置的。例如，当温度在16℃～32℃之间时，可以设置充电电流为1.9A；当温度在32℃～36℃之间时，可以设置充电电流为1.7A；当温度在36℃～38℃之间时，可以设置充电电流为1.4A；当温度在38℃～39℃之间时，可以设置充电电流为1.0A。
在温度较高时，可以将温度区间设置地较密一些，并且在温度较高时，采用的充电电流快速下降，待充电设备的发热量能够迅速减小，因此能够及时有效地将待充电设备的温度控制在合理的范围内，不至于待充电设备的温度过高，影响用户体验。
上文的具体数值仅是为方便理解进行举例说明的，并不会对本申请实施例造成任何限定。可以理解的是，温度区间的设置和充电电流的设置可以是上文描述的任何一种实现方式的结合。
作为另一个示例，可以设置一个最大温度点，当待充电设备的温度超过该最大温度点时，采用每次降低△I大小的电流，为待充电设备进行充电。
下面结合图3，以恒流充电阶段为例，对本申请实施例提供的充电方法进行详细描述。如图3所示，该充电方法可以包括步骤S310-S340。
S310、当电池的电压和温度满足预设条件后，确定电池进入恒流充电阶段。可以在电池的电压温度满足进入恒流充电阶段的条件后，再对电池进行恒流充电。
S320、检测待充电设备的温度。对待充电设备的温度进行检测，可以是通过检测电路对待充电设备的温度直接进行检测，或者也可以通过检测电路对待充电设备的温度进行检测，通过待充电设备的温度间接反映待充电设备的温度。
S330、当待充电设备的温度大于第一阈值时，将充电电流降低△I。该第一阈值可以是一个较高的温度点，当待充电设备的温度超过该温度点时，就表明待充电设备的温度可能即将达到电池温度的极限，如果温度再高的话，可能会引发待充电设备的异常。例如，该第一阈值可以为41℃，或者该第一阈值可以为40℃或者45℃。因此，可以在待充电设备的温度超过第一阈值后，降低充电电流，以降低待充电设备的温度。
S340、以降低△I之后的充电电流对电池进行充电。
本申请实施例提供的技术方案，可以预先设置一个温度的第一阈值，即一个高温度点，当待充电设备的温度超过该高温度点时，就降低充电电流，以控制待充电设备的温度。
可选地，当待充电设备的温度大于第一阈值时，将充电电流降低△I可以指，当待充电设备的温度大于第一阈值时，每隔时间t，将充电电流降低△I，直至待充电设备的温度小于第一阈值。或者，当待充电设备的温度大于第一阈值时，将充电电流降低△I可以指，当待充电设备的温度大于第一阈值时，每隔时间t，将充电电流降低△I，直至降低后的额充电电流小于预设最小充电电流。
举例说明，假设第一阈值为41℃，△I＝200mA，每当待充电设备的温度超过41℃时，将充电电流降低200mA，并以降低200mA后的充电电流对待充电设备进行充电。如果待充电设备的温度下降，降低至小于41℃时，则可以以降低后的充电电流进行充电。如果待充电设备的温度还是继续上升，超过第一阈值，可以继续降充电电流降低200mA，直至待充电设备的温度小于41℃。
本申请实施例在温度超过某个阈值后，通过逐步降低充电电流的方式，以寻找一个合适的充电电流，使得待充电设备的发热量与散热量达到平衡，在该平衡点下，待充电设备的温度相对稳定，并且还能够在温度不再上升的情况下，以最大的充电电流进行充电。因此，本申请实施例能够在控制待充电设备的温度的情况下，提高充电速度，提升用户体验。
由于在充电过程中，待充电设备的温度对充电电流的响应可能需要一段时间，因此，可以在温度达到第一阈值后，继续充电时间t，然后再检测待充电设备的温度是否真的超过第一阈值。也就是说，待充电设备的当前温度并不能真实地表示充电电流对待充电设备充电的结果，可以在温度超过第一阈值后，继续以之前的充电电流充电时间t，再检测待充电设备的温度。如果待充电设备的温度还是超过第一阈值，则可以降低充电电流 ΔI；如果待充电设备的温度下降，且下降到小于第一阈值，则可以以当前的充电电流继续对待充电设备充电。
可选地，充电时间t可以为10ms～20ms之间的任意值。以充电时间t为15ms，第一阈值为41℃为例，如果以充电电流1.6A充电的过程中，待充电设备的温度超过41℃，可以以1.6A的充电的电流继续充电15ms；如果待充电设备的温度还是继续升高，则可以降低充电电流200mA，以1.4A的充电电流对待充电设备进行充电；以1.4A的充电电流对待充电设备充电15ms，如果待充电设备的温度下降，且下降为40℃，则可以以1.4A的充电电流对待充电设备进行充电，如果待充电设备的温度还是在41℃以上，则可以继续降低充电电流，以1.2A的充电电流对待充电设备充电15ms。重复上述步骤，直至待充电设备的温度小于41℃。
如果充电电流过小，充电速度就会较慢。此时可以选择结束充电，或者进入下一个充电阶段，例如可以从恒流充电阶段切换到恒压充电阶段等方式。可选地，可以设置预设最小充电电流。例如该预设最小充电电流可以为500mA，当充电电流降低至小于500mA时，可以结束充电。作为一实施例，如果充电电流已经降低至小于500mA，但待充电设备的温度仍然超过第一阈值，此时也可以结束充电。
本申请实施例还可以设置一个第三阈值，该第三阈值可以理解为最大温度值，该第三阈值大于第一阈值。当待充电设备的温度超过该最大温度值时，直接退出充电模式，或者结束充电。在该情况下，可以不论当前的充电电流为多大，或者待充电设备处于何种充电阶段，只要待充电设备的温度超过最大温度值，均可以直接退出充电模式，这样可以保证待充电设备的安全。
例如，该最大温度值可以为45℃，在对待充电设备充电的过程中，也就是说，不论待充电设备处于上文描述的何种阶段，当待充电设备的温度超过45℃时，结束充电，以保证待充电设备的安全。
可选地，本申请实施例的充电机制也可以是采用设置预设区间和逐步降低充电电流结合的方式进行温度控制。
例如，在当所述待充电设备的温度大于第一阈值时，将充电电流降低△I之前，本申请实施例还可以设置第二阈值点，该第二阈值小于第一阈值。当待充电设备的温度小于该第二阈值时，以第一充电电流进行充电；当待充电设备的温度大于第二阈值且小于第一阈值时，以第二充电电流进行充电。其中，第一充电电流大于第二充电电流。待充电设备的温度小于第二阈值可以指，待充电设备的温度小于第二阈值且大于进入恒流充电阶段需满足的最低温度值，换句话说，该待充电设备的温度可以满足在上文描述的第一预设区间中。大于第二阈值且小于第一阈值也可以指上文描述的第二预设区间。
作为一个实施例，本申请实施例可以设置多个温度点A、B、C、D、E，温度点A、B、C、D、E依次增大，即A＜B＜C＜D＜E，其中，温度区间[A,C]设置一个充电电流a，温度区间[C,D]设置充电电流b，且a＞b，并在温度超过D之后，采用逐步降低充电电流的方式对待充电设备进行充电。
具体地，在对待充电设备进行充电前，可以先对待充电设备的温度进行检测，当待充电设备的温度满足在[A,D]之间时，进入充电模式。进一步地，确定待充电设备的温度是在[A,C]区间，还是在[C,D]区间，当待充电设备的温度在[A,C]区间时，以充电电流a对待充电设备进行充电；当待充电设备的温度在[C,D]区间时，以充电电流b对待充电设备进行充电。在以充电电流a对待充电设备进行充电的过程中，待充电设备的温度可能会慢慢升高，并升高到超过温度C。在待充电设备的温度升高到超过C后，降低充电电流，以充电电流b对待充电设备进行充电。在以充电电流b对待充电设备充电的过程中，待充电设备的温度可能会升高，也可能会降低，或者也可能存在保持稳定的情况。当待充电设备的温度继续升高，升高到超过温度D之后，可以采用逐步降电流的方式对待充电设备进行充电，具体的逐步降电流的方式可以参见上文的描述。当待充电设备的温度下降，下降到小于温度C之后，可以重新以充电电流a对待充电设备进行充电。当待充电设备的温度相对稳定后，可以继续以充电电流b对待充电设备进行充电。
此外，可以设置预设最小充电电流，当待充电设备的温度超过D之后，在进行逐步降电流的过程中，如果充电电流下降到预设最小充电电流c，其中，c＜b＜a，待充电设备的温度还是大于温度D时，则可以退出充电模式，或者进入下一个充电阶段等。这样可以及时地将待充电设备的温度下降下来，避免一直对待充电设备进行充电，造成待充电设备的温度过高，影响用户体验，并且温度过高，也会存在一些其他的不安全因素，例如容易引起爆炸等。
温度E可以为最大温度值，当待充电设备的温度超过温度E后，可以退出充电模式。本申请实施例通过设置最大温度点E，不论待充电设备当前处于哪个充电阶段，也不论当前的充电电流为多大，一旦待充电设备的温度超过E，就立即退出充电模式，这样能够降低安全隐患。
可选地，在待充电设备的温度重新下降到[A,C]区间时，回到充电电流a对待充电设备进行充电，这样能够进一步提高充电速度。例如，可以在温度[A,C]区间设置一个温度点B，当待充电设备的温度下降到小于温度B之后，可以重新回到充电电流a对待充电设备进行充电。
本申请实施例对待充电设备进行充电可以是采用直充的充电模式，也可以是普通的充电模式。直充的充电方式可以理解为快充的充电模式。下文会对两种充电模式进行详细的介绍。
在充电的过程中，可以对待充电设备的温度进行实时监控，并根据待充电设备的温度状态，不断地调整充电的电流，确定出当前的充电阶段最佳的充电电流，以该最佳的充电电流对待充电设备进行充电。
下面结合图4，对本申请实施例的充电方法的具体过程进行详细描述。
图4是以恒流充电阶段为例，对本申请的充电机制进行举例说明。
图4的实施例中，可以设置5个温度点阈值，如设置温度点A、B、C、D、E，且温度点A、B、C、D、E依次增大，A≤B≤C≤D≤E。另外也可以设置多个充电电流，如充电电流a、b、c，且充电电流a、b、c依次减小，a≥b≥c。
S501、在电池电压满足条件后进入恒流充电阶段。在对电池进行恒流充电之前，可以先对电池的电压进行检测，在电池的电压满足恒流充电的条件后，在进入恒流充电阶段。
S502、对待充电设备的温度进行检测，判断待充电设备的温度能否满足进入恒流充电的条件。例如，在待充电设备的温度T满足A≤T≤D时，确定待充电设备的温度满足恒流充电条件。
S503、在确定待充电设备的温度和电压满足进入恒流充电条件后，可以以不大于a充电电流对待充电设备进行充电。
S504、再判断待充电设备的温度T是否满足T≤C。例如，可以进一步判断温度T是 满足A≤T≤C，还是满足C≤T≤D。
S505、如果T≤C，则可以以充电电流a对待充电设备进行充电。当待充电设备的温度较低时，可以以最大的充电电流进行充电。或者，该步骤还可以为，如果T≤C，对待充电设备进行充电使用的最大充电电流为充电电流a，换句话说，充电电流a为最大限制电流。
S506、如果T≥C，则可以以充电电流b对待充电设备进行充电。以充电电流b进行充电还可以理解为以最大充电电流为b的充电电流进行充电。或者，该步骤还可以为，如果T≥C，对待充电设备进行充电使用的最大充电电流为充电电流b，换句话说，充电电流b为最大限制电流。
S507、在以充电电流b进行充电后，还可以实时检测待充电设备的温度。进一步地，可以检测待充电设备的温度T是下降还是升高。例如，判断T≤B还是T≥D。
S508、当T≤B时，可以增大充电电流。当T≤B时，表示以充电电流b进行充电时，待充电设备的温度下降，待充电设备的发热量小于散热量，此时可以适当增大充电电流，以提高充电速度，且不会造成待充电设备的温度快速升高，能够提升用户体验。
S509、当T≥D时，可以降低充电电流。当T≥D时，表示以充电电流b进行充电时，待充电设备的温度继续升高，待充电设备的发热量等于散热量，如果继续以充电电流b进行充电，可能会引发安全隐患，需要降低充电电流，以保证安全。
降低充电电流的方式可以采用上文描述的逐步降电流的方式。每隔时间t，降低充电电流ΔI。
S510、在降低充电电流的过程中，可以实时监测待充电设备的温度情况。判断待充电设备的温度是下降还是一直在升高。在温度下降的情况下，可以进一步判断温度T是否满足T≤B。在温度升高的情况下，可以继续判断温度是否一直高于温度D。
在温度T≤B的情况下，可以增大充电电流，以充电电流a进行充电。
在温度仍然大于温度D的情况下，重复S510，逐步降低充电电流，直至充电电流降低至小于充电电流c，或者待充电设备的温度高于温度E。当充电电流降低至小于充电电流c，或者待充电设备的温度高于温度E，则可以退出恒流充电模式。
可选地，在上述步骤中，不论在任何情况下，只要待充电设备的温度超过温度E，就可以退出恒流充电阶段。这样可以保证待充电设备的安全。
图4仅是以5个温度点和3个充电电流进行举例描述，本申请实施例并不限于此，本申请实施例还可以设置更多或更少的温度点和充电电流，以对待充电设备的充电过程进行优化。
本申请实施例对调整充电电流的方式不做具体限定。
例如，充电电流的调整可以由无线充电装置来实现，可以向无线充电装置发送温度反馈信息，以指示该无线充电装置对无线充电信号的发射功率进行调整。又例如，充电电流的调整可以由电源提供设备来实现，可以向电源提供设备发送温度反馈信息，以指示电源提供设备对其输出功率进行调整。其中，该温度反馈信息为待充电设备的温度对应的反馈信息。
本申请实施例的充电方法可以应用在充电装置中，该充电装置例如可以是待充电设备，或者，该充电装置为具有无线充电信号接收功能的芯片。该充电装置可以包括通信控制电路，当待充电设备的温度大于第一阈值时，该通信控制电路可以向无线充电装置发送温度反馈信息，以指示给无线充电装置降低无线充电信号的发射功率对应的电流。
无线充电信号的发射功率对应的电流可以理解为，无线发射电路发射的无线充电信号被无线接收电路接收后，被无线接收电路转换后的输出电压和/或输出电流的大小。
该温度反馈信息可以包括待充电设备的温度与第一阈值之间的差异。无线充电装置接收到该差异后，可以降低无线充电信号对应的电流。例如，可以为该无线充电装置的发射 功率设置多个档位，每隔档位的电流可以为△I。无线充电装置可以每接收到一次该差异，降低一档电流。
该温度反馈信息可以包括调整信息，该调整信息用于指示无线充电装置对无线充电信号的发射功率进行调整，例如，该调整信息可用于指示无线充电装置增大或减小无线充电信号对应的输出电流。例如，当待充电设备的温度超过第一阈值时，该调整信息可用于指示无线充电装置降低无线充电信号对应的输出电流；当采用降低后的电流对电池进行充电的过程中，如果待充电设备的温度下降到小于第二阈值，例如上文描述的温度点B，此时，该调整信息可用于指示无线充电装置增大无线充电信号对应的电流。
类似地，当待充电设备的温度大于第一阈值时，通信控制电路可以向电源提供设备发送温度反馈信息，以指示电源提供设备降低其输出电流。
该温度反馈信息可以包括待充电设备的温度与第一阈值之间的差异。电源提供设备接收到该差异后，可以降低电源提供设备的输出电流。例如，可以为该电源提供设备的输出电流设置多个档位，每隔档位的电流可以为△I。电源提供设备可以没接收到一次该差异，降低一档电流。
该温度反馈信息可以包括调整信息，该调整信息可以指示电源提供设备对其输出电流进行调整。例如，该调整信息可以用于指示电源提供设备增大或减小其输出电流。例如，当待充电设备的温度超过第一阈值时，该调整信息可用于指示电源提供设备降低其输出电流；当采用降低后的电流对电池进行充电的过程中，如果待充电设备的温度下降到小于第二阈值，例如上文描述的温度点B，此时，该调整信息可用于指示电源提供设备增大其输出电流。
当待充电设备的温度超过第二阈值时，通信控制电路也可以采用上述类似的方法对充电电流进行调节。为了简洁，此处不再赘述。
图5是本申请实施例提供的充电装置600的示意图。装置实施例与方法实施例相互对应，因此，未被描述的部分可以参见前面方法实施例。该充电装置600包括通信控制电路610和充电电路620。本申请实施例中的充电装置可以是指待充电设备，或者该充电装置可以是仅包括用于接收无线充充电信号的芯片。
通信控制电路610，用于当电池的电压和温度满足预设条件后，确定所述电池进入恒流充电阶段，并检测所述待充电设备的温度，当所述待充电设备的温度大于第一阈值时，将充电电流降低△I。
充电电路620，用于以降低△I之后的充电电流对所述电池进行充电。
可选地，该通信控制电路610用于当所述待充电设备的温度大于所述第一阈值时，每隔时间t，将充电电流降低△I，直至所述待充电设备的温度小于所述第一阈值。
可选地，所述通信控制电路用于当所述待充电设备的温度大于所述第一阈值时，每隔时间t，将充电电流降低△I，直至降低后的充电电流小于预设最小充电电流。
可选地，该通信控制电路610还用于当降低后的充电电流小于所述预设最小充电电流，且所述待充电设备的温度大于所述第一阈值时，结束充电。
可选地，所述通信控制电路还用于当所述待充电设备的温度小于第二阈值时，以第一充电电流对所述电池进行充电；当所述待充电设备的温度大于第二阈值且小于所述第一阈值时，以所述第二充电电流对所述电池进行充电，其中，所述第二阈值小于所述第一阈值，且所述第一充电电流大于所述第二充电电流。
可选地，所述通信控制电路还用于在以所述第二充电电流对所述电池充电的过程中，如果所述待充电设备的温度下降到小于所述第二阈值，则以所述第一充电电流对所述电池进行充电。
可选地，所述通信控制电路还用于在以降低△I之后的充电电流对所述电池充电的过程中，如果所述待充电设备的温度下降到小于所述第二阈值，则以所述第一充电电流对所 述电池进行充电。
可选地，所述通信控制电路还用于当所述待充电设备的温度大于第三阈值时，结束充电，所述第三阈值大于所述第一阈值。
可选地，所述通信控制电路还用于当所述待充电设备的温度大于所述第一阈值时，向无线充电装置发送温度反馈信息，以指示所述无线充电装置将无线充电信号对应的输出电流降低△I，其中，所述温度反馈信息为所述待充电设备的温度对应的反馈信息。
可选地，所述温度反馈信息包括调整信息，所述调整信息用于指示所述无线充电装置降低所述无线充电信号对应的输出电流。
可选地，所述通信控制电路还用于当所述待充电设备的温度大于所述第一阈值时，向电源提供设备发送温度反馈信息，以指示所述电源提供设备降低所述电源提供设备的输出电流，其中，所述温度反馈信息为所述待充电设备的温度对应的反馈信息。
可选地，所述温度反馈信息包括调整信息，所述调整信息用于指示所述电源提供设备降低所述电源提供设备的输出电流。
可选地，所述温度反馈信息用于指示所述待充电设备的温度与所述第一阈值之间的差异。
图6为本申请实施例提供的无线充电系统的示意性结构图，下面结合图6，对本申请实施例的充电过程进行详细描述。
无线接收电路231可以接收无线充电装置220中无线发射电路221发射的无线充电信号，并将无线充电信号转换为无线接收电路的输出电压和输出电流，为电池进行充电。
第二通信控制电路235可用于与第一通信控制电路222进行通信，以指示第一通信控制电路222调整无线发射电路221的发射功率。
第二通信控制电路235可以实时检测或监控待充电设备的温度。第二通信控制电路235对待充电设备的温度进行检测或监控的方式可以有多种，例如可以通过检测电路对待充电设备的温度进行检测，也可以通过其他方式对待充电设备的温度进行检测额，本申请实施例对此并不限定。
第二通信控制电路235还可以对电池的电压进行检测。当电池的电压和温度满足预设条件后，可以向第一通信控制222电路发送指示信息，以指示第一通信控制电路222调整无线发射电路221的发射功率，以对电池进行恒流充电。
在进入恒流充电后，如果第二通信控制电路235检测到待充电设备的温度在图5所示的区间[A，C]时，可以向第一通信控制电路222发送指示信息，以指示无线发射电路可以按照最大充电电流发射无线充电信号，使得充电电路可以按照最大充电电流a为电池进行充电。
在以最大充电电流a进行充电的过程中，第二通信控制电路235可以对待充电设备的温度进行实时检测，在待充电设备的温度超过温度点C时，可以向第一通信控制电路发送温度反馈信息，以指示降低无线发射电路发射的无线充电信号对应的电流，使得充电电路可以以充电电流b对电池进行充电。例如，无线充电装置220可以为无线发射电路的发射功率对应的输出电流设置多个档位，当接收到第二通信控制电路发送的温度反馈信息之后，可以将输出电流的档位降低一格，这样通过一次调节就可以将发射功率对应的输出电流降低到充电电流b附近，能够节省环路响应时间。
在以充电电流b对电池进行充电的过程中，第二通信控制电路235可以对待充电设备的温度进行持续检测，当检测到待充电设备的温度下降到小于温度点B时，可以向第一通信控制电路发送温度反馈信息，以指示增大无线发射电路发射的无线充电信号对应的输出电流，使得充电电路可以重新以充电电流a对电池进行充电。如果无线充电装置为无线发射电路的发射功率对应的输出电流设置有多个档位，在接收到第二通信控制电路发送的温度反馈信息后，可以将输出电流的档位增大一格，这样通过一次调节就可以将发射功率对 应的输出电流增大到充电电流a附近，能够节省环路响应时间。
在以充电电流b对电池进行充电的过程中，如果第二通信控制电路检测到待充电设备的温度升高到大于或等于温度点D，可以向第一通信控制电路发送温度反馈信息，以指示无线发射电路将发射的无线充电信号对应的输出电流降低△I。第二通信控制电路还可以指示无线发射电路每隔时间t，将充电电流降低△I。无线充电装置可以为充电电流设置多个档位，每隔时间t，降低一个档位。当待充电设备的温度小于温度点D之后，第二通信控制电路可以指示无线发射电路保持当前的充电电流为电池进行充电。当充电电流下降到小于充电电流c之后，第二通信控制电路可以指示无线发射电路停止对电池进行充电。
在将充电电流降低△I为电池进行充电的过程中，如果第二通信控制电路检测到待充电设备的温度小于温度点B，可以指示无线发射电路充电以充电电流a对电池进行充电。
在上述任何充电阶段，如果第二通信控制电路检测到待充电设备的温度超过温度点E，则第二通信控制电路可以指示无线发射电路停止对电池进行充电，以保证电池的安全。
在本申请的实施例中，调整无线发射电路221的输出功率的方式可包括以下两种方式中的任一种和几种的组合：
(1)在无线发射电路221的输入电压固定的情况下，可以通过调整谐振电路的调谐频率和/或逆变电路的开关管的占空比等参数，实现对无线发射电路221的输出功率的调整。
(2)通过调整电源提供设备210的输出电压(即输入无线充电装置230的电压)，实现对无线发射电路221的输出功率的调整。
与上述过程类似，对充电电流的调整也可以由电源提供设备来实现。第二通信控制电路可以与电源提供设备进行通信，以指示电源提供设备对其输出电流进行调整。
当第二通信控制电路检测到电池的电压和温度满足预设条件后，可以向电源提供设备发送指示信息，以指示电源提供设备调整电源提供设备的输出功率，以对电池进行恒流充电。
如果待充电设备的温度在区间[A,C]之间，则第二通信控制电路可以指示电源提供设备对其输出电流进行调整，使得充电电路可以按照最大充电电流a对电池进行充电。如果待充电设备的温度在区间[C,D]之间，则第二通信控制电路可以指示电源提供设备对其输出电流进行调整，使得充电电路可以按照充电电流b对电池进行充电。
当待充电设备的温度超过温度点D，第二通信控制电路可以向电源提供设备发送温度反馈信息，以指示电源提供设备将输出电流降低△I。电源提供设备可以设置多个输出电流的多个档位，每隔时间t，降低一个档位。当待充电设备的温度小于温度点D之后，第二通信控制电路可以指示电源提供设备保持当前的充电电流为电池进行充电。当充电电流下降到小于充电电流c之后，第二通信控制电路可以指示电源提供设备停止对电池进行充电。
在将充电电流降低△I为电池进行充电的过程中，如果第二通信控制电路检测到待充电设备的温度小于温度点B，可以指示电源提供设备重新以充电电流a对电池进行充电。
在上述任何充电阶段，如果第二通信控制电路检测到待充电设备的温度超过温度点E，则第二通信控制电路可以指示电源提供设备停止对电池进行充电，以保证电池的安全。
图6所描述的方案可以与图4描述的方案相结合，例如，图4描述的各温度点的设置方式，以及充电流程同样适用于图6所描述的方案。
本申请实施例还提供一种待充电设备，该待充电设备可以包括电池，以及上文描述的任一种实现方式中的充电装置。
如图7所示，本申请实施例还提供一种芯片系统700。该芯片系统700包括处理器710，存储器720。该存储器720用于存储指令，该处理器710用于执行该存储器720存储的指令。
应理解，图6所示的充电装置或图7所示的芯片系统可用于执行上述方法实施例中的 相关操作或流程，并且图6所示的充电装置或图7所示的芯片系统中各个电路或单元的操作和/或功能分别为了实现上述方法实施例中的相应流程，为了简洁，在此不再赘述。
图8是本申请实施例提供的另一种无线充电系统的示意性结构图。如图8所示，该无线充电装置220还可以包括充电接口223，充电接口223可用于与外部的电源提供设备210相连。无线发射电路221还可用于根据电源提供设备210的输出电压和输出电流，生成无线充电信号。
本申请对充电接口223的类型不做具体限定。可选地，在一些实施例中，该充电接口223可以为通用串行总线(universal serial bus，USB)接口。该USB接口例如可以是USB2.0接口，micro USB接口，或USB TYPE-C接口。可选地，在另一些实施例中，该充电接口223还可以是lightning接口，或者其他任意类型的能够用于充电的并口和/或串口。
本申请实施例对第一通信控制电路222与电源提供设备210之间的通信方式不做具体限定。作为一个示例，第一通信控制电路222可以通过除充电接口之外的其他通信接口与电源提供设备210相连，并通过该通信接口与电源提供设备210通信。作为另一个示例，第一通信控制电路222可以以无线的方式与电源提供设备210进行通信。例如，第一通信控制电路222可以与电源提供设备210进行近场通信(near field communication，NFC)。作为又一个示例，第一通信控制电路222可以通过充电接口223与电源提供设备210进行通信，而无需设置额外的通信接口或其他无线通信模块，这样可以简化无线充电装置220的实现。例如，充电接口223为USB接口，第一通信控制电路222可以与电源提供设备210基于该USB接口中的数据线(如D+和/或D-线)进行通信。又如，充电接口223可以为支持功率传输(power delivery，PD)通信协议的USB接口(如USB TYPE-C接口)，第一通信控制电路222与电源提供设备210可以基于PD通信协议进行通信。
图8所示的充电方法与上文描述类似，为避免重复，此处不再赘述。需要说明的是，第二通信控制电路235对待充电设备的温度的检测可以通过图8所示的检测电路234来实现。
本申请实施例的技术方案可以应用于无线充电过程中，或者也可以应用在优先充电过程中。下面以无线充电为例，对本申请实施例的技术方案再进行详细描述。
可选地，在一些实施例中，无线充电装置220可以支持第一无线充电模式和第二无线充电模式，无线充电装置220在第一无线充电模式下对待充电设备的充电速度快于无线充电装置220在第二无线充电模式下对待充电设备的充电速度。换句话说，相较于工作在第二无线充电模式下的无线充电装置220来说，工作在第一无线充电模式下的无线充电装置220充满相同容量的待充电设备中的电池的耗时更短。
上文描述的对待充电设备进行充电的过程可以是采用第一充电模式进行充电，也可以是采用第二充电模式进行充电。
第二无线充电模式可为称为普通无线充电模式，例如可以是传统的基于QI标准、PMA标准或A4WP标准的无线充电模式。第一无线充电模式可为快速无线充电模式。该普通无线充电模式可以指无线充电装置220的发射功率较小(通常小于15W，常用的发射功率为5W或10W)的无线充电模式，在普通无线充电模式下想要完全充满一较大容量电池(如3000毫安时容量的电池)，通常需要花费数个小时的时间；而在快速无线充电模式下，无线充电装置220的发射功率相对较大(通常大于或等于15W)。相较于普通无线充电模式而言，无线充电装置220在快速无线充电模式下完全充满相同容量电池所需要的充电时间能够明显缩短、充电速度更快。
参见图9，在本公开的一实施例中，待充电设备230还包括：第二充电通道236。第二充电通道236可为导线。在第二充电通道236上可设置变换电路237，用于对无线接收电路231输出的直流电进行电压控制，得到第二充电通道236的输出电压和输出电流，以对电池232进行充电。
在一个实施例中，变换电路237可用于降压电路，并且输出恒流和/或恒压的电能。换句话说，该变换电路237可用于对电池的充电过程进行恒压和/或恒流控制。
当采用第二充电通道236对电池232进行充电时，无线发射电路221可采用恒定发射功率发射电磁信号，无线接收电路231接收电磁信号后，由变换电路237处理为满足电池232充电需求的电压和电流并输入电池232，实现对电池232的充电。应理解，在一些实施例中，恒定发射功率不一定是发射功率完全保持不变，其可在一定的范围内变动，例如，发射功率为7.5W上下浮动0.5W。
在该实施例中，第二通信控制电路235还用于根据检测到的待充电设备230的温度，与第一通信控制电路进行通信。例如，第二通信控制电路235可以将待充电设备230的温度通过数据包的形式发送给无线充电装置220。
在一实施例中，通过第二充电通道236对电池232进行充电时，无线充电装置220和待充电设备230可按照Qi标准进行无线充电。由此，可通过信号调制的方式，将包含上述温度信息的数据信号耦合到无线接收电路231的线圈以发送给无线发射电路221的线圈，再传输给第一通信控制电路222。第一通信控制电路222根据温度信息，调整无线发射电路221的发射参数，例如，发射线圈的工作频率等。
可选地，在一些实施例中，第一通信控制电路222和第二通信控制电路235之间的通信可以采用蓝牙(bluetooth)通信、无线保真(wireless fidelity，Wi-Fi)通信或反向散射(backscatter)调制方式(或功率负载调制方式)通信、基于高载波频率的近距离无线通信、光通信、超声波通信、超宽带通信和移动通信等无线通信方式。
可选地，第一通信控制电路222和第二通信控制电路235之间的通信也可以采用数据接口的有线通信的方式进行通信。
第一通信控制电路222和第二通信控制电路235中的控制功能例如可以通过微控制单元(micro control unit，MCU)实现。第一通信控制电路222和第二通信控制电路235可用于对待充电设备充电过程中的充电电流进行控制。
在本公开的实施例中，通过第一充电通道233对电池232进行充电的充电方式为第一无线充电模式，通过第二充电通道236对电池232进行充电的方式称为第二无线充电模式。无线充电装置和待充电设备可通过握手通信确定采用第一无线充电模式还是第二无线充电模式对电池232进行充电。
本公开实施例中，在无线充电装置侧，当通过第一无线充电模式对待充电设备充电时，无线发射电路221的最大发射功率可为第一发射功率值。而通过第二无线充电模式对待充电设备进行充电时，无线发射电路221的最大发射功率可为第二发射功率值。其中，第一发射功率值大于第二发射功率值，由此，采用第一无线充电模式对待充电设备的充电速度大于第二无线充电模式。
可选地，第二通信控制电路235还可用于控制第一充电通道233和第二充电通道236之间的切换。例如，如图9所示，第一充电通道233上可以设置开关238，第二通信控制电路235可以通过控制该开关238的导通与关断控制第一充电通道233和第二充电通道236之间的切换。上文指出，在某些实施例中，无线充电装置220可以包括第一无线充电模式和第二无线充电模式，且无线充电装置220在第一无线充电模式下对待充电设备230的充电速度快于无线充电装置220在第二无线充电模式下对待充电设备230的充电速度。当无线充电装置220使用第一无线充电模式为待充电设备230内的电池充电时，待充电设备230可以控制第一充电通道233工作；当无线充电装置220使用第二无线充电模式为待充电设备230内的电池充电时，待充电设备230可以控制第二充电通道236工作。
在待充电设备侧，第二通信控制电路235可以根据充电模式，在第一充电通道233和第二充电通道236之间进行切换。当采用第一无线充电模式时，第二通信控制电路235控制第一充电通道233上的电压转换电路239工作。当采用第二无线充电模式时，第二通信 控制电路235控制第二充电通道236上的变换电路237工作。
可选地，无线充电装置220可以与待充电设备230之间进行通信，以协商无线充电装置220与待充电设备230之间的充电模式。
除了上文描述的通信内容外，无线充电装置220中的第一通信控制电路222与待充电设备230中的第二通信控制电路235之间还可以交互许多其他通信信息。在一些实施例中，第一通信控制电路222和第二通信控制电路235之间除了用于交互电池232的温度信息外，还可以用于交互进入过压保护或过流保护的指示信息等信息，功率传输效率信息(该功率传输效率信息可用于指示无线发射电路221和无线接收电路231之间的功率传输效率)。
可选地，第二通信控制电路235与第一通信控制电路222之间的通信可以为单向通信，也可以为双向通信，本申请实施例对此不做具体限定。
在本申请的实施例中，第二通信控制电路的功能可由待充电设备230的应用处理器实现，由此，可以节省硬件成本。或者，也可由独立的控制芯片实现，由独立的控制芯片实现可提高控制的可靠性。
可选地，本申请实施例可以将无线接收电路232与电压转换电路239均集成在同一无线充电芯片中，这样可以提高待充电设备集成度，简化待充电设备的实现。例如，可以对传统无线充电芯片的功能进行扩展，使其支持充电管理功能。
本申请实施例提供的无线充电系统中的电池232可以包括一节电芯，也可以包括相互串联的N节电芯(N为大于1的正整数)。以N＝2为例，电池232可以包括第一电芯和第二电芯，且第一电芯和第二电芯相互串联。以充电功率等于20W，单节电芯的充电电压等于5V为例进行说明。为了满足串联双电芯对充电电压的要求，第一充电通道233的输出电压/输出电流需要维持在10V/2A。这样一来，无线发射电路基于10V/2A生成电磁信号，相应地，无线接收电路将电磁信号转换成10V/2A的输出电压/输出电流，由于电流从4A降低至2A，电能传输过程产生的热量就会相应降低。因此，本申请实施例也可以采用相互串联的多节电芯，以降低无线发射电路221和无线接收电路231产生的热量。
上文是以N＝2为例进行说明的，实际上，N的取值可以是3，也可以是3以上的正整数。相互串联的电芯越多，电能经过无线发射电路221和无线接收电路231所产生的热量就越小。
在本申请的一实施例中，为了保证充电速度，并进一步缓解待充电设备230的发热现象，本申请实施例对待充电设备230内部的电池结构进行了进一步的改造，引入了相互串联的多节电芯，与单电芯方案相比，如果要达到同等的充电速度，多节电芯所需的充电电流为单节电芯所需的充电电流的1/N(N为待充电设备230内的相互串联的电芯的数目)，换句话说，在保证同等充电速度的前提下，本发明实施例可以大幅降低充电电流的大小，从而进一步减少待充电设备230在充电过程的发热量。
本申请的一实施例中的多节电芯可以是规格、参数相同或相近的电芯，规格相同或相近的电芯便于统一管理，且选取规格、参数相同或相近的电芯能够提高多节电芯的整体性能和使用寿命。
在充电的过程中，第一充电通道或第二充电通道输出的电能可用于对相互串联的多节电芯充电。在供电过程中，可采用降压电路将多节电芯的电压降压后对待充电设备230进行系统供电，或者也可采用单节电芯进行系统供电。此外，在充电过程中，如果需要对系统供电，可直接通过充电管理电路分一条通路，对系统进行供电。
为了保持多节电芯的电量均衡，在充放电过程中，可通过均衡电路对多节电芯进行电量均衡。均衡电路的实现方式很多，例如，可以在电芯两端连接负载，消耗电芯的电量，使其与其它电芯的电量保持一致，从而使得各个电芯的电压保持一致。或者，可以采用电量高的电芯为电量低的电芯充电的方式进行均衡，直到各个电芯的电压一致为止。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其他任意组合来实现。 当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如数字视频光盘(digital video disc，DVD))、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (28)

  1. 一种充电方法，其特征在于，包括：
    当电池的电压和待充电设备的温度满足预设条件后，确定所述电池进入恒流充电阶段；
    检测所述待充电设备的温度；
    当所述待充电设备的温度大于第一阈值时，将充电电流降低△I；
    以降低△I之后的充电电流对所述待充电设备进行充电。
  2. 根据权利要求1所述的充电方法，其特征在于，所述当所述待充电设备的温度大于第一阈值时，将充电电流降低△I包括：
    当所述待充电设备的温度大于所述第一阈值时，每隔时间t，将充电电流降低△I，直至所述待充电设备的温度小于所述第一阈值。
  3. 根据权利要求1所述的充电方法，其特征在于，所述当所述待充电设备的温度大于第一阈值时，将充电电流降低△I包括：
    当所述待充电设备的温度大于所述第一阈值时，每隔时间t，将充电电流降低△I，直至降低后的充电电流小于预设最小充电电流。
  4. 根据权利要求3所述的充电方法，其特征在于，所述充电方法还包括：
    当降低后的充电电流小于所述预设最小充电电流，且所述待充电设备的温度大于所述第一阈值时，结束充电。
  5. 根据权利要求1-4中任一项所述的充电方法，其特征在于，在所述当所述待充电设备的温度大于第一阈值时，将充电电流降低△I之前，所述充电方法还包括：
    当所述待充电设备的温度小于第二阈值时，以第一充电电流对所述电池进行充电；
    当所述待充电设备的温度大于第二阈值且小于所述第一阈值时，以所述第二充电电流对所述电池进行充电，其中，所述第二阈值小于所述第一阈值，且所述第一充电电流大于所述第二充电电流。
  6. 根据权利要求5所述的充电方法，其特征在于，所述充电方法还包括：
    在以所述第二充电电流对所述电池充电的过程中，如果所述待充电设备的温度下降到小于所述第二阈值，则以所述第一充电电流对所述电池进行充电。
  7. 根据权利要求5或6所述的充电方法，其特征在于，所述充电方法还包括：
    在以降低△I之后的充电电流对所述电池充电的过程中，如果所述待充电设备的温度下降到小于所述第二阈值，则以所述第一充电电流对所述电池进行充电。
  8. 根据权利要求1-7中任一项所述的充电方法，其特征在于，所述充电方法还包括：
    当所述待充电设备的温度大于第三阈值时，结束充电，所述第三阈值大于所述第一阈值。
  9. 根据权利要求1-8中任一项所述的充电方法，其特征在于，所述当所述待充电设备的温度大于第一阈值时，将充电电流降低△I包括：
    当所述待充电设备的温度大于所述第一阈值时，向无线充电装置发送温度反馈信息，以指示所述无线充电装置将无线充电信号对应的电流降低△I，其中，所述温度反馈信息为所述待充电设备的温度对应的反馈信息。
  10. 根据权利要求9所述的充电方法，其特征在于，所述温度反馈信息包括调整信息，所述调整信息用于指示所述无线充电装置降低所述无线充电信号对应的输出电流。
  11. 根据权利要求1-8中任一项所述的充电方法，其特征在于，所述当所述待充电设备的温度大于第一阈值时，将充电电流降低△I包括：
    当所述待充电设备的温度大于所述第一阈值时，向电源提供设备发送温度反馈信息，以指示所述电源提供设备将所述电源提供设备的输出电流降低△I，其中，所述温度反馈信息为所述待充电设备的温度对应的反馈信息。
  12. 根据权利要求11所述的充电方法，其特征在于，所述温度反馈信息包括调整信息，所述调整信息用于指示所述电源提供设备降低所述电源提供设备的输出电流。
  13. 根据权利要求9-12中任一项所述的充电方法，其特征在于，所述温度反馈信息用于指示所述待充电设备的温度与所述第一阈值之间的差异。
  14. 一种充电装置，其特征在于，包括：
    通信控制电路，用于当电池的电压和温度满足预设条件后，确定所述电池进入恒流充电阶段，并检测所述待充电设备的温度，当所述待充电设备的温度大于第一阈值时，将充电电流降低△I；
    充电电路，用于以降低△I之后的充电电流对所述电池进行充电。
  15. 根据权利要求14所述的充电装置，其特征在于，所述通信控制电路用于当所述待充电设备的温度大于所述第一阈值时，每隔时间t，将充电电流降低△I，直至所述待充电设备的温度小于所述第一阈值。
  16. 根据权利要求14所述的充电装置，其特征在于，所述通信控制电路用于当所述待充电设备的温度大于所述第一阈值时，每隔时间t，将充电电流降低△I，直至降低后的充电电流小于预设最小充电电流。
  17. 根据权利要求16所述的充电装置，其特征在于，所述通信控制电路还用于当降低后的充电电流小于所述预设最小充电电流，且所述待充电设备的温度大于所述第一阈值时，结束充电。
  18. 根据权利要求14-17中任一项所述的充电装置，其特征在于，所述通信控制电路还用于当所述待充电设备的温度小于第二阈值时，以第一充电电流对所述电池进行充电；当所述待充电设备的温度大于第二阈值且小于所述第一阈值时，以所述第二充电电流对所述电池进行充电，其中，所述第二阈值小于所述第一阈值，且所述第一充电电流大于所述第二充电电流。
  19. 根据权利要求18所述的充电装置，其特征在于，所述通信控制电路还用于在以所述第二充电电流对所述电池充电的过程中，如果所述待充电设备的温度下降到小于所述第二阈值，则以所述第一充电电流对所述电池进行充电。
  20. 根据权利要求18或19所述的充电装置，其特征在于，所述通信控制电路还用于在以降低△I之后的充电电流对所述电池充电的过程中，如果所述待充电设备的温度下降到小于所述第二阈值，则以所述第一充电电流对所述电池进行充电。
  21. 根据权利要求14-20中任一项所述的充电装置，其特征在于，所述通信控制电路还用于当所述待充电设备的温度大于第三阈值时，结束充电，所述第三阈值大于所述第一阈值。
  22. 根据权利要求14-21中任一项所述的充电装置，其特征在于，所述通信控制电路还用于当所述待充电设备的温度大于所述第一阈值时，向无线充电装置发送温度反馈信息，以指示所述无线充电装置将无线充电信号对应的输出电流降低△I，其中，所述温度反馈信息为所述待充电设备的温度对应的反馈信息。
  23. 根据权利要求22所述的充电装置，其特征在于，所述温度反馈信息包括调整信息，所述调整信息用于指示所述无线充电装置降低所述无线充电信号对应的输出电流。
  24. 根据权利要求14-21中任一项所述的充电装置，其特征在于，所述通信控制电路还用于当所述待充电设备的温度大于所述第一阈值时，向电源提供设备发送温度反馈信息，以指示所述电源提供设备将所述电源提供设备的输出电流降低△I，其中，所述温度反馈信息为所述待充电设备的温度对应的反馈信息。
  25. 根据权利要求24所述的充电装置，其特征在于，所述温度反馈信息包括调整信息，所述调整信息用于指示所述电源提供设备降低所述电源提供设备的输出电流。
  26. 根据权利要求22-25中任一项所述的充电装置，其特征在于，所述温度反馈信息 用于指示所述待充电设备的温度与所述第一阈值之间的差异。
  27. 一种存储介质，其特征在于，包括指令，当所述程序被处理器运行时，如权利要求1-13中任一项所述的方法被执行。
  28. 一种芯片系统，其特征在于，包括：
    存储器，用于存储指令；
    处理器，用于从所述存储器中调用并运行所述指令，使得安装有所述芯片系统的充电装置执行如权利要求1-13中任一项所述的方法。
PCT/CN2018/124411 2018-12-27 2018-12-27 充电方法和装置、待充电设备、存储介质及芯片系统 Ceased WO2020133081A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880098867.1A CN112889199A (zh) 2018-12-27 2018-12-27 充电方法和装置、待充电设备、存储介质及芯片系统
PCT/CN2018/124411 WO2020133081A1 (zh) 2018-12-27 2018-12-27 充电方法和装置、待充电设备、存储介质及芯片系统
EP18945198.2A EP3893357A4 (en) 2018-12-27 2018-12-27 Charging method and apparatus, device to be charged, storage medium, and chip system
US17/351,229 US20210313820A1 (en) 2018-12-27 2021-06-18 Charging method and device, device to be charged, storage medium, and chip system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/124411 WO2020133081A1 (zh) 2018-12-27 2018-12-27 充电方法和装置、待充电设备、存储介质及芯片系统

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/351,229 Continuation US20210313820A1 (en) 2018-12-27 2021-06-18 Charging method and device, device to be charged, storage medium, and chip system

Publications (1)

Publication Number Publication Date
WO2020133081A1 true WO2020133081A1 (zh) 2020-07-02

Family

ID=71129420

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/124411 Ceased WO2020133081A1 (zh) 2018-12-27 2018-12-27 充电方法和装置、待充电设备、存储介质及芯片系统

Country Status (4)

Country Link
US (1) US20210313820A1 (zh)
EP (1) EP3893357A4 (zh)
CN (1) CN112889199A (zh)
WO (1) WO2020133081A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4280416A4 (en) * 2021-06-28 2024-11-20 Samsung Electronics Co., Ltd. CHARGING METHOD BASED ON THERMAL REGULATION AND ASSOCIATED ELECTRONIC DEVICE

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111095720B (zh) * 2018-05-31 2023-06-20 Oppo广东移动通信有限公司 充电方法和充电装置
US11637441B2 (en) * 2020-11-02 2023-04-25 Aira, Inc. Thermal regulation for wireless charging pad
CN113851745A (zh) * 2021-09-29 2021-12-28 东莞新能安科技有限公司 电芯充电控制方法、电池包以及并机系统
CN114614523A (zh) * 2022-02-17 2022-06-10 深圳市爱都科技有限公司 充电方法、充电底座、可穿戴设备及计算机可读存储介质
KR102731092B1 (ko) * 2022-06-14 2024-11-14 에스케이씨 주식회사 무선충전장치 및 이를 제어하는 방법
EP4578082A1 (en) * 2023-11-03 2025-07-02 Google Llc Controller-managed charging current within thermal budget

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101106283A (zh) * 2007-07-25 2008-01-16 中兴通讯股份有限公司 为便携式手持设备的电池充电的方法
CN102326313A (zh) * 2009-06-18 2012-01-18 松下电器产业株式会社 充电控制电路、电池组件以及充电系统
CN102544609A (zh) * 2010-12-31 2012-07-04 中国移动通信集团甘肃有限公司 充电控制方法及系统
CN104362406A (zh) * 2014-10-24 2015-02-18 深圳市中兴移动通信有限公司 移动终端的充电控制方法及移动终端
US20160190825A1 (en) * 2014-12-29 2016-06-30 National Chung Shan Institute Of Science And Technology Method of diagnosing battery and adaptively adjusting charging modes of the battery
EP3046211A2 (en) * 2015-01-14 2016-07-20 Black & Decker Inc. Battery charger and method of charging a battery
CN106549460A (zh) * 2016-12-29 2017-03-29 上海掌门科技有限公司 一种电子设备无线充电温度控制方法及系统
US20180262024A1 (en) * 2017-03-09 2018-09-13 Sling Media Pvt Ltd. Intelligent battery charging system and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8519566B2 (en) * 2006-03-28 2013-08-27 Wireless Environment, Llc Remote switch sensing in lighting devices
US9860965B2 (en) * 2006-03-28 2018-01-02 Wireless Environment, Llc Cloud connected lighting system
CN105552988B (zh) * 2015-12-09 2018-07-03 歌尔股份有限公司 可穿戴电子设备的充电控制方法、装置以及智能手表
KR102629141B1 (ko) * 2016-04-25 2024-01-26 삼성전자주식회사 배터리의 충전을 제어하기 위한 방법 및 그 전자 장치
WO2018184230A1 (zh) * 2017-04-07 2018-10-11 Oppo广东移动通信有限公司 无线充电系统、装置、方法及待充电设备

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101106283A (zh) * 2007-07-25 2008-01-16 中兴通讯股份有限公司 为便携式手持设备的电池充电的方法
CN102326313A (zh) * 2009-06-18 2012-01-18 松下电器产业株式会社 充电控制电路、电池组件以及充电系统
CN102544609A (zh) * 2010-12-31 2012-07-04 中国移动通信集团甘肃有限公司 充电控制方法及系统
CN104362406A (zh) * 2014-10-24 2015-02-18 深圳市中兴移动通信有限公司 移动终端的充电控制方法及移动终端
US20160190825A1 (en) * 2014-12-29 2016-06-30 National Chung Shan Institute Of Science And Technology Method of diagnosing battery and adaptively adjusting charging modes of the battery
EP3046211A2 (en) * 2015-01-14 2016-07-20 Black & Decker Inc. Battery charger and method of charging a battery
CN106549460A (zh) * 2016-12-29 2017-03-29 上海掌门科技有限公司 一种电子设备无线充电温度控制方法及系统
US20180262024A1 (en) * 2017-03-09 2018-09-13 Sling Media Pvt Ltd. Intelligent battery charging system and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3893357A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4280416A4 (en) * 2021-06-28 2024-11-20 Samsung Electronics Co., Ltd. CHARGING METHOD BASED ON THERMAL REGULATION AND ASSOCIATED ELECTRONIC DEVICE

Also Published As

Publication number Publication date
EP3893357A1 (en) 2021-10-13
CN112889199A (zh) 2021-06-01
US20210313820A1 (en) 2021-10-07
EP3893357A4 (en) 2021-12-29

Similar Documents

Publication Publication Date Title
JP7203901B2 (ja) 無線充電装置、無線充電方法及び被充電機器
US10998751B2 (en) Wireless charging system, wireless charging device, wireless charging method, and device to be charged
CN109787325B (zh) 无线充电系统、装置、方法及待充电设备
US11462931B2 (en) Charging method and charging apparatus
US11722062B2 (en) Power supply device, electronic device and power supply method
WO2020133081A1 (zh) 充电方法和装置、待充电设备、存储介质及芯片系统
US12034329B2 (en) Device to be charged, and charging and discharging control method
TWI665844B (zh) 待充電裝置和充電方法
US12027888B2 (en) Transmitting apparatus, receiving apparatus, power supply device and wireless charging method
US20210281099A1 (en) Transmitting Apparatus and Wireless Charging Method
US11502557B2 (en) Wireless charging control method and charging control device
JP2021516944A (ja) 無線充電受信装置及び移動端末
WO2021077933A1 (zh) 充电控制方法、充电控制设备和电子设备
CN112332501B (zh) 无线充电方法和待充电设备
WO2021052346A1 (zh) 充电方法、充电设备和电子设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18945198

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018945198

Country of ref document: EP

Effective date: 20210705