WO2023045813A1 - Appareil de chauffage de batterie et dispositif électronique - Google Patents

Appareil de chauffage de batterie et dispositif électronique Download PDF

Info

Publication number
WO2023045813A1
WO2023045813A1 PCT/CN2022/118661 CN2022118661W WO2023045813A1 WO 2023045813 A1 WO2023045813 A1 WO 2023045813A1 CN 2022118661 W CN2022118661 W CN 2022118661W WO 2023045813 A1 WO2023045813 A1 WO 2023045813A1
Authority
WO
WIPO (PCT)
Prior art keywords
field effect
effect transistor
pole
battery
heating
Prior art date
Application number
PCT/CN2022/118661
Other languages
English (en)
Chinese (zh)
Inventor
袁兵
于文超
崔瑞
谭荣龙
邱实
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023045813A1 publication Critical patent/WO2023045813A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of batteries, in particular to a battery heating device and electronic equipment.
  • the battery temperature of mobile phones and other electronic devices When the ambient temperature is low, the battery temperature of mobile phones and other electronic devices also drops, making the battery activity worse. If you need to use certain functions of electronic devices at this time, such as making calls, chatting, watching videos, etc., electronic The device may respond slowly or even unresponsively, resulting in a poor user experience. Therefore, in a low-temperature environment, the battery of the electronic device needs to be heated to ensure the real-time response of the electronic device to user operations.
  • the battery heating scheme proposed in the prior art usually needs to be executed when the electronic device is in the charging scene.
  • a battery heating device and electronic equipment are proposed.
  • the flexibility of the battery heating method can be improved when the electronic equipment is in a low temperature environment, so that the electronic equipment is in The battery can be heated in both charging and non-charging scenarios.
  • the embodiment of the present application provides a battery heating device, the battery heating device is applied to electronic equipment, the battery heating device includes: a processor, a battery, a heating control module and a heating module, the battery and The heating module is adjacent, and the processor is used to control the battery to generate a first DC voltage signal when the temperature information of the battery is lower than a first threshold; the heating control module is used to control the battery according to the first voltage signal A second AC voltage signal is generated, and the heating module is used to generate heat according to the second voltage signal and provide it to the battery.
  • the processor controls the battery to generate a first DC voltage signal, and the heating control module generates a second AC voltage signal according to the first voltage signal, The heating module generates heat according to the second voltage signal and provides it to the battery, so that the temperature of the battery is increased.
  • the battery is adjacent to the heating module, which can ensure the heat transfer efficiency and obtain a better heating effect.
  • the battery heating device of the embodiment of the present application as long as the temperature information of the battery is lower than the first threshold, the battery can be heated, so that the battery can be heated when the electronic device is in a charging scene or a non-charging scene, and the electronic device can be improved. Flexibility in how the battery is heated when the device is in a cold environment.
  • the heating module includes a coil and a capacitor connected in series, and the second voltage signal has a voltage such that the impedance of the heating module is less than a second threshold frequency and duty cycle.
  • the common impedance of the coil and the capacitor is related to the frequency and duty cycle of the AC signal flowing through the coil and the capacitor, and the second voltage signal has a frequency and a frequency at which the impedance of the heating module is smaller than the second threshold
  • the coil When the duty cycle is high, the coil generates a larger current, which in turn makes the coil heat faster, which can improve the heating efficiency.
  • the heating control module includes a first voltage converter and a second voltage converter , the first voltage converter is used to generate a DC third voltage signal according to the first voltage signal, the voltage value of the third voltage signal is greater than the voltage value of the first voltage signal; the second voltage conversion The device is used to generate the second voltage signal according to the third voltage signal.
  • the first voltage signal is the signal directly output by the battery.
  • the voltage value is usually low, usually between 3.5-4.4V.
  • the second voltage signal directly used to obtain the AC will make the voltage value of the second voltage signal lower. It is not conducive to the heating module to obtain a larger current, that is, it is not conducive to ensuring a higher heating efficiency.
  • the voltage value may not be stable enough, and the second voltage signal directly used to obtain the AC will cause the voltage value of the second voltage signal to fluctuate, which is not conducive to the stable heating effect of the heating module.
  • the stable third voltage signal with a higher voltage value is output to the heating module, which can ensure that the heating module has higher heating efficiency and stable heating effect.
  • the second voltage converter includes a first field effect transistor, a second field effect transistor, a second Three field effect transistors and a fourth field effect transistor, the first pole of the first field effect transistor and the second pole of the second field effect transistor respectively receive the third voltage signal, and the first pole of the first field effect transistor
  • the second pole is connected to the second pole of the fourth field effect transistor and one end of the heating module, and the first pole of the second field effect transistor is connected to the first pole of the third field effect transistor and the heating module.
  • the second pole of the third field effect transistor and the first pole of the fourth field effect transistor are respectively connected to the ground GND, and the first field effect transistor, the second field effect transistor, and the The third field effect transistor and the third electrode of the fourth field effect transistor respectively receive a first control signal, and the first control signal is used to control the first field effect transistor, the second field effect transistor, The first pole and the second pole of the third field effect transistor and the fourth field effect transistor are turned on or off, and the first control signal is controlled by generated by the processor.
  • the second voltage converter is also used to receive the first control signal, so The first control signal is generated by the processor when the temperature information is lower than a first threshold, and the generating the second voltage signal according to the third voltage signal includes: according to the third voltage signal and The first control signal generates the second voltage signal.
  • the first control signal is generated when the temperature information is lower than the first threshold, so when the condition that the temperature information is lower than the first threshold is not met, the first control signal will not be generated, so that the second voltage converter will not be subject to the first control
  • the effect of the signal can perform the original function.
  • the first control signal causes the When the first pole and the second pole of the first field effect transistor and the third field effect transistor are turned on or off, the first pole of the second field effect transistor and the fourth field effect transistor The first pole and the second pole are turned off or turned on, the first field effect transistor and the third field effect transistor are turned on between the first pole and the second pole, and the second field effect transistor and the third field effect transistor are connected to each other.
  • the voltage value of one end of the heating module is equal to the voltage value of the third voltage signal, and the voltage value of the other end of the heating module is Equal to 0; conduction between the first pole and the second pole of the second field effect transistor and the fourth field effect transistor, the first pole of the first field effect transistor and the third field effect transistor When it is closed with the second pole, the voltage value at one end of the heating module is equal to 0, and the voltage value at the other end of the heating module is equal to the voltage value of the third voltage signal.
  • the first control signal causes the Between the first pole and the second pole of the first field effect transistor and the third field effect transistor and between the first pole and the second pole of the second field effect transistor and the fourth field effect transistor alternately conducting to generate the second voltage signal.
  • the first control signal is wave, the frequency and duty cycle of the first control signal are equal to the frequency and duty cycle of the second voltage signal.
  • the frequency and duty cycle of the first control signal are equal to the frequency and duty cycle of the second voltage signal, so that by directly adjusting the frequency and duty cycle of the first control signal, the frequency and duty cycle of the second voltage signal can be adjusted indirectly Ratio, to obtain the second voltage signal whose frequency and duty cycle meet the requirements.
  • the coil includes a wireless At least one of a charging coil or a near field communication coil.
  • the heating control module and the heating module are wirelessly charged in electronic equipment circuit implementation.
  • an embodiment of the present application provides an electronic device, the electronic device includes the battery heating device described in any one of the above items.
  • Fig. 1 shows an exemplary structural diagram of an electronic device according to an embodiment of the present application.
  • Fig. 2 shows an exemplary structural diagram of the heating control module 103 according to an embodiment of the present application.
  • FIG. 3 shows an exemplary structural diagram of the second voltage converter 1032 according to the embodiment of the present application.
  • FIG. 4 shows an exemplary schematic diagram of voltage values output to both ends of the heating module 104 by the second voltage converter 1032 within a period of time according to an embodiment of the present application.
  • Fig. 5 shows an exemplary structural diagram of the heating module 104 according to the embodiment of the present application.
  • FIG. 6 shows an exemplary schematic diagram of a battery heating method according to an embodiment of the present application.
  • FIG. 7 shows an exemplary structural diagram of a battery heating device 70 according to an embodiment of the present application.
  • Fig. 8 shows a schematic structural diagram of an exemplary electronic device 7 according to an embodiment of the present application.
  • a battery heating solution proposed in the prior art is, under the condition that the electronic device is connected to a charger, by increasing the processor (central processing unit (CPU), graphics processing unit (GPU) of the electronic device ) etc.) power consumption discharge to heat the battery.
  • CPU central processing unit
  • GPU graphics processing unit
  • this solution is only applicable to charging scenarios, and because the processor is usually installed on the motherboard, the heat needs to be provided to the motherboard first and then to the battery, which has a certain impact on the heating effect and heating efficiency of the battery.
  • Another battery heating solution proposed in the prior art is to add an external circuit dedicated to supplying current to the coil of the electronic device on the electronic device. Under the condition that the electronic device is connected to a charger, the external circuit generates current to flow through the coil Make the coil heat first, and then heat the battery through the coil. The coil is usually set near the battery, and the heat can be directly transferred to the battery, which can solve the above problem of low heating efficiency and improve the heating effect and heating efficiency.
  • this solution still does not solve the problem that it is only applicable to charging scenarios, and the external circuit increases the circuit cost and circuit area of the electronic device to a certain extent.
  • the battery heating solution in the prior art cannot simultaneously meet the requirement of heating the battery when the electronic device is in a charging scene or a non-charging scene.
  • this application proposes a battery heating device and electronic equipment.
  • the flexibility of the battery heating method can be improved when the battery is in a low temperature environment, so that The battery can be heated when the electronic device is in a charging scene or a non-charging scene.
  • Fig. 1 shows an exemplary structural diagram of an electronic device according to an embodiment of the present application.
  • Electronic devices can include cell phones, foldable electronic devices, tablet computers, desktop computers, laptop computers, handheld computers, notebook computers, ultra-mobile personal computers (UMPC), netbooks, cellular phones, personal digital Assistant (personal digital assistant, PDA), augmented reality (augmented reality, AR) equipment, virtual reality (virtual reality, VR) equipment, artificial intelligence (artificial intelligence, AI) equipment, wearable equipment, vehicle equipment, smart home equipment , or at least one of smart city equipment.
  • PDA personal digital assistant
  • augmented reality augmented reality, AR
  • virtual reality virtual reality
  • artificial intelligence artificial intelligence
  • wearable equipment wearable equipment
  • vehicle equipment smart home equipment
  • smart home equipment smart home equipment
  • the electronic device may include: a processor 101, a battery 102, a heating control module 103 and a heating module 104, the processor 101 may be connected to the battery 102, and the battery 102 may be connected to the heating control module 103, The heating control module 103 can be connected to the heating module 104 .
  • An exemplary method for heating a battery by an electronic device according to an embodiment of the present application will be described below with reference to FIG. 1 .
  • the electronic device may further include a temperature sensor (not shown), such as a negative temperature coefficient (negative temperature coefficient, NTC) thermistor, etc., for detecting the temperature of the battery. temperature.
  • a temperature sensor such as a negative temperature coefficient (negative temperature coefficient, NTC) thermistor, etc.
  • the trigger condition for the temperature sensor to detect the battery temperature may be that the electronic device detects that the screen is awakened, or that the electronic device detects an action of unlocking by the user, etc., which is not limited in this application.
  • the temperature sensor can detect the battery temperature at a certain frequency and generate a signal P0 indicating temperature information while the user is using the electronic device.
  • the processor 101 may include one or more processing units, for example: the processor 101 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural network processor (neural-network processing unit, NPU), etc. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.
  • application processor application processor, AP
  • modem processor graphics processing unit
  • GPU graphics processing unit
  • ISP image signal processor
  • controller video codec
  • digital signal processor digital signal processor
  • baseband processor baseband processor
  • neural network processor neural-network processing unit
  • the processor 101 may periodically acquire a signal P0 generated by the temperature sensor, and determine the temperature of the battery according to the signal P0 from the temperature sensor, thereby determining whether the electronic device is in a low-temperature environment. For example, the relationship between the temperature value of the battery and a preset first temperature threshold (eg -5° C.) can be judged, and when the temperature value of the battery is lower than the preset first temperature threshold, it can be determined that the electronic device is in a low-temperature environment.
  • a preset first temperature threshold eg -5° C.
  • the temperature sensor can also be connected to a comparison module (not shown), and when it is judged that the temperature is lower than the first temperature threshold (for example, -5°C), a signal P0 indicating temperature information is generated and reported to the processor .
  • the processor 101 may directly determine that the electronic device is in a low-temperature environment according to the signal P0 from the temperature sensor.
  • the value of the first temperature threshold may be determined according to an actual application scenario of the electronic device, and the present application does not limit the specific value of the first temperature threshold.
  • the processor 101 may output a signal P1 to the battery 102 .
  • the battery 102 can output a signal P2 to the heating control module 103 .
  • the signal P2 may be a direct current signal.
  • the voltage value of the signal P2 can be between 3.5-4.4V.
  • the voltage value of the signal P2 may also be equal to other values, and the application does not limit the specific value of the voltage value of the signal P2.
  • the heating control module 103 can generate a signal P3 according to the signal P2 and output it to the heating module 104 .
  • the signal P3 may be an alternating current signal.
  • FIGS. 2-4 reference may be made to the relevant descriptions in FIGS. 2-4 below.
  • the heating module 104 can generate current according to the signal P3, and the current makes the heating module 104 generate heat.
  • the heating module 104 can be arranged adjacent to the battery 102 so that heat can be directly transferred to the battery 102 .
  • a heat conduction component (not shown) may also be provided in contact with the heating module 104 and the battery 102 respectively, and the heat conduction component may include a graphite sheet, a front case assembly, etc., so that heat can be transferred through the heat conduction component.
  • the heat conduction component may also be attached to the area where the processor 101 is located, so as to transfer the heat generated by the processor 101 to the battery 102 .
  • the heat provided by the heating module 104 can increase the temperature of the battery.
  • the processor 101 may stop outputting the signal P1 to the battery 102 .
  • the temperature meeting the normal working requirement may be a temperature greater than or equal to the second temperature threshold (for example, 5°C).
  • the battery 102 stops outputting the signal P2 to the heating control module 103, and the heating control module 103 stops outputting the signal P3. to the heating module 104. Since the signal P3 is not received, the heating module 104 will stop heating.
  • the second temperature threshold can be determined according to the actual application scenario of the electronic device, as long as it is greater than the first temperature threshold, and the present application does not limit the specific value of the second temperature threshold.
  • FIG. 2 shows an exemplary structural diagram of the heating control module 103 according to an embodiment of the present application.
  • the heating control module 103 may include a first voltage converter 1031 and a second voltage converter 1032, wherein the first voltage converter 1031 may be connected to the second voltage converter 1032, and the second voltage converter 1032 may be connected to the second voltage converter 1032.
  • a voltage converter 1031 is also connected to the battery 102
  • a second voltage converter 1032 is also connected to the heating module 104 .
  • the first voltage converter 1031 may be a DC-DC converter for receiving a signal P2 from the battery 102 and outputting a signal P4 to the second voltage converter 1032 .
  • the signal P4 may be a direct current signal, and the voltage value of the signal P4 may be greater than the voltage value of the signal P2, for example, the voltage value of the signal P4 may be equal to 5V.
  • the voltage value of the signal P4 may also be equal to other values, and the application does not limit the specific value of the voltage value of the signal P4.
  • the first voltage converter 1031 can be implemented based on existing technologies, for example, it can be a boost converter BOOST, etc.
  • the present application does not limit the specific structure of the first voltage converter 1031 .
  • FIG. 3 shows an exemplary structural diagram of the second voltage converter 1032 according to the embodiment of the present application.
  • the second voltage converter 1032 may include field effect transistors Q1, Q2, Q3, and Q4, where the field effect transistors Q1 and Q3 may be of the same type (for example, both are P channel, or both are N channel) field effect transistors, field effect transistors Q2 and Q4 can be a group of field effect transistors of the same type (for example, both are N channel, or both are P channel), field effect transistors Q1, Q3 may be field effect transistors of different types from field effect transistors Q2, Q4.
  • the field effect transistors Q1 and Q3 may be of the same type (for example, both are P channel, or both are N channel) field effect transistors
  • field effect transistors Q2 and Q4 can be a group of field effect transistors of the same type (for example, both are N channel, or both are P channel)
  • field effect transistors Q1, Q3 may be field effect transistors of different types from field effect transistors Q2, Q4.
  • the first pole q11 of the field effect transistor Q1 may be connected to the second pole q22 of the field effect transistor Q2 for receiving the signal P4.
  • the second pole q12 of the field effect transistor Q1 can be connected to the second pole q42 of the field effect transistor Q4 for connecting to one end of the heating module 104 .
  • the first pole q21 of the field effect transistor Q2 can be connected to the first pole q31 of the field effect transistor Q3 for connecting the other end of the heating module 104 .
  • the second pole q32 of the field effect transistor Q3 and the first pole q41 of the field effect transistor Q4 can be connected to the ground GND, and the third poles q13, q23, q33, and q43 of the field effect transistors Q1-Q4 can respectively receive the signal P5.
  • Signal P5 may eg come from a processor.
  • the signal P5 can be a square wave with a certain frequency and duty cycle
  • the third pole of the field effect transistor Q1-Q4 can be a gate
  • the first pole can be a source (or drain)
  • the second pole can be a drain ( or source)
  • a group of field effect transistors including field effect transistors Q1 and Q3 and another group of field effect transistors including field effect transistors Q2 and Q4 can be turned on or off alternately. That is to say, the voltage value output from the second voltage converter 1032 to both ends of the heating module 104 can alternately be equal to the voltage value of the signal P4 (for example, 5V) and the voltage value of the GND (for example, 0V).
  • FIG. 4 shows an exemplary schematic diagram of voltage values output to both ends of the heating module 104 by the second voltage converter 1032 within a period of time according to an embodiment of the present application.
  • an ideal waveform of the voltage value output from the second voltage converter 1032 to the two ends of the heating module 104 can be a square wave, wherein the frequency and duty cycle of the waveform can be compared with that of the signal P5
  • the frequency and the duty cycle are the same, and in this way, the voltage across the heating module 104 continuously changes as shown in FIG. 4 , that is, the heating module 104 can pass an AC signal (signal P3 ).
  • the signal P5 may also come from other components in the electronic device (such as a controller, not shown), etc., and the present application does not limit the source of the signal P5.
  • the second voltage converter 1032 may also be implemented with other structures. As long as the second voltage converter 1032 can generate the AC signal P3 based on the DC signal P4, the application does not limit the specific structure of the second voltage converter 1032.
  • the heat generation control module 103 may also be implemented with other structures. As long as the heating control module 103 can generate the AC signal P3 based on the DC signal P2 , the application does not limit the specific structure of the heating control module 103 .
  • Fig. 5 shows an exemplary structural diagram of the heating module 104 according to the embodiment of the present application.
  • the heating module 104 includes a coil 1041 and a capacitor 1042 , wherein the coil 1041 is connected to the capacitor 1042 , and the coil 1041 and the capacitor 1042 are respectively used as two ends of the heating module 104 to connect to the heating control module 103 .
  • the heat generated by the heating module in the embodiment of the present application mainly includes the heat generated by the current generated by the coil causing the coil to generate heat. Therefore, the heating efficiency of the heating module is related to the magnitude of the current generated by the coil. The larger the current generated by the coil, the higher the heating efficiency; the smaller the current generated by the coil, the lower the heating efficiency.
  • the coil is connected in series with the capacitor to reduce the impedance of the heating module.
  • the frequency and duty cycle of the AC signal output to the coil when the impedance of the heating module is less than the impedance threshold can be firstly determined.
  • the frequency and duty cycle of the AC signal output to the coil can be determined such that the impedance of the heating module is minimized.
  • the frequency and duty cycle of the signal P5 can use the determined frequency and duty cycle, so that the second voltage converter can generate the AC signal of the determined frequency and duty cycle according to the signal p5, and then make the heating module pass through
  • the alternating current signal with the determined frequency and duty ratio is used, the maximum current is generated, so that the coil heats up faster, so as to achieve higher heating efficiency.
  • the processor 101, battery 102, heating control module 103, and heating module 104 themselves may be existing components of the electronic device.
  • the processor 101 may be the central processing unit or graphics processing unit of the mobile phone.
  • the battery 102 can be a battery on a mobile phone, and the heating control module 103 and the heating module 104 can be implemented through a wireless charging circuit in an electronic device.
  • the first voltage converter 1031 in the heating control module 103 can be a voltage booster in the wireless charging circuit.
  • the converter BOOST, the second voltage converter 1032 can be a TX/RX chip for wireless charging, and the coil 1041 in the heating module 104 can be a wireless charging coil in a mobile phone wireless charging circuit or a near field communication (near field communication, NFC ) coil, the capacitor 1042 may be a capacitor connected in series with the wireless charging coil or the near field communication coil, and so on. Therefore, the electronic device according to the embodiment of the present application can heat the battery without adding new components when it is in a low-temperature environment, and has high heating efficiency. The heat does not need to be transmitted through the main board, which can have a better heating effect. Therefore, in a low-temperature environment, the battery can be heated without increasing the cost and area of the circuit, and has better heating effect and higher heating efficiency.
  • FIG. 6 shows an exemplary schematic diagram of a battery heating method according to an embodiment of the present application.
  • the electronic device according to the embodiment of the present application may execute the method for heating the battery shown in FIG. 6 , so as to heat the battery.
  • FIGS. 1-5 For an exemplary structure of an electronic device, reference may be made to the description of FIGS. 1-5 above. The following describes an exemplary workflow of a battery heating method according to an embodiment of the present application with reference to FIGS. 1-6 .
  • the battery heating method of the embodiment of the present application includes steps S1-S5:
  • step S1 the processor detects whether the electronic device is in a low-temperature environment, and when the electronic device is in a low-temperature environment, the following step S2 is executed.
  • step S2 the processor detects whether the electronic device is in a low-temperature environment, and when the electronic device is in a low-temperature environment, the following step S2 is executed.
  • Step S2 the processor controls the battery to generate a signal P2 and provide it to the first voltage converter of the heating control module, and generate a signal P5 with a preset frequency and duty cycle and provide it to the second voltage converter of the heating control module.
  • the first voltage converter receives the signal P2
  • the following step S3 is executed
  • the second voltage converter receives the signal P5, the following step S4 is executed.
  • Step S3 the first voltage converter of the heating control module generates a signal P4 according to the signal P2.
  • a signal P4 for an exemplary manner of generating the signal P4, reference may be made to the relevant description in FIG. 2 above, and details are not repeated here.
  • Step S4 the second voltage converter of the heating control module controls a group of field effect transistors Q1, Q3 and another group of Q2, Q4 to turn on and off alternately according to the signal P5, and the second voltage converter of the heating control module also receives
  • signal P4 is received
  • signal P3 is generated and provided to the heating module.
  • the heating module receives the signal P3, the following step S5 is executed.
  • Step S5 the coil of the heating module generates current according to the signal P3, and generates heat according to the current to provide to the battery.
  • the coil of the heating module generates current according to the signal P3, and generates heat according to the current to provide to the battery.
  • the signal P5 is generated by the processor as an example. Those skilled in the art should understand that the signal P5 may also be generated by the processor controlling other components in the electronic device (such as a controller, not shown), and the present application does not limit the generation method of the signal P5.
  • the electronic device in the embodiment of the present application may be applied to an application scenario where no external power source is connected to the electronic device.
  • the process of the battery generating the signal P1 will also generate heat, which can further improve the heating efficiency.
  • the electronic device in the embodiment of the present application may be applied to an application scenario where an external power source is connected to the electronic device.
  • an external power source is connected to the electronic device.
  • the process of generating the signal P1 by the battery will also generate heat, which can further improve the heating efficiency.
  • the signal P1 may be provided by an external power source, which may reduce battery power consumption caused by the battery heating process.
  • steps S2-S4 are only performed when the electronic device is in a low-temperature environment, so as to heat the battery until the temperature of the electronic device meets normal working requirements.
  • the above-mentioned processor, battery, heating control module, and heating module need to realize the functions that can be realized in the prior art when the temperature of the electronic equipment meets the normal working requirements.
  • the second voltage converter of the heating control module is a TX/RX chip used for wireless charging
  • the TX/RX chip will only be activated under the premise that the temperature of the electronic device is greater than a certain threshold so that the temperature of the electronic device meets the normal working requirements.
  • FIG. 7 shows an exemplary structural diagram of a battery heating device 70 according to an embodiment of the present application.
  • the present application provides a battery heating device 70, the battery heating device 70 is applied to an electronic device 7, and the battery heating device 70 includes: a processor 701, a battery 702, a heating control module 703 and a heating module 704, the battery 702 is adjacent to the heating module 704, and the processor 701 is configured to control the battery 702 to generate A first DC voltage signal A1; the heating control module 703 is used to generate a second AC voltage signal A2 according to the first voltage signal A1, and the heating module 704 is used to generate heat according to the second voltage signal A2 and provided to the battery 702 .
  • the processor 701 can refer to the example of the processor 101 in FIG. 1 and related descriptions above
  • the battery 702 can refer to the example of the battery 102 in FIG. 1 and related descriptions above
  • the first threshold can refer to the example of the battery 102 in FIG.
  • the first voltage signal A1 may refer to the example of the signal P2 in the related description above and FIG. 1
  • the heating control module 703 may refer to the example of the heating control module 103 in FIG. 1 and related descriptions above
  • the second voltage signal A2 may refer to the example of the signal P3 in the above and related descriptions of FIG. 1 .
  • the processor controls the battery to generate a first DC voltage signal, and the heating control module generates a second AC voltage signal according to the first voltage signal, The heating module generates heat according to the second voltage signal and provides it to the battery, so that the temperature of the battery is increased.
  • the battery is adjacent to the heating module, which can ensure the heat transfer efficiency and obtain a better heating effect.
  • the battery heating device of the embodiment of the present application as long as the temperature information of the battery is lower than the first threshold, the battery can be heated, so that the battery can be heated when the electronic device is in a charging scene or a non-charging scene, and the electronic device can be improved. Flexibility in how the battery is heated when the device is in a cold environment.
  • the heating module 704 includes a coil and a capacitor connected in series, and the second voltage signal A2 has a frequency and a duty cycle that make the impedance of the heating module 704 smaller than a second threshold.
  • the serial coil and capacitor included in the heating module 704 can refer to the example of the coil 1041 and the capacitor 1042 in the above and related description of FIG. 5 .
  • the second threshold refer to the example of the impedance threshold mentioned above and in the related description of FIG. 5 .
  • the frequency and duty cycle of the second voltage signal A2 can refer to the example of the frequency and duty cycle of the signal P3 described above and in relation to FIG. 4 .
  • the common impedance of the coil and the capacitor is related to the frequency and duty cycle of the AC signal flowing through the coil and the capacitor, and the second voltage signal has a frequency and a frequency at which the impedance of the heating module is smaller than the second threshold
  • the coil When the duty cycle is high, the coil generates a larger current, which in turn makes the coil heat faster, which can improve the heating efficiency.
  • the heating control module 703 includes a first voltage converter and a second voltage converter, the first voltage converter is used to generate a third DC voltage according to the first voltage signal A1 signal, the voltage value of the third voltage signal is greater than the voltage value of the first voltage signal; the second voltage converter is used to generate the second voltage signal A2 according to the third voltage signal.
  • the first voltage converter can refer to the example of the first voltage converter 1031 in the above and the related description of FIG. 2
  • the second voltage converter can refer to the second voltage converter in the above and the related description of FIG. 2
  • the third voltage signal may refer to the example of the signal P4 above and in the related description of FIG. 2 .
  • the first voltage signal is the signal directly output by the battery.
  • the voltage value is relatively low, usually between 3.5-4.4V.
  • the second voltage signal directly used to obtain the AC will make the voltage value of the second voltage signal lower, which is not It is beneficial for the heating module to obtain a larger current, that is, it is not conducive to ensuring a higher heating efficiency.
  • the voltage value is not stable enough.
  • the second voltage signal directly used to obtain the AC will cause the voltage value of the second voltage signal to fluctuate, which is not conducive to the stable heating effect of the heating module.
  • the stable third voltage signal with a higher voltage value is output to the heating module, which can ensure that the heating module has higher heating efficiency and stable heating effect.
  • the second voltage converter includes a first field effect transistor, a second field effect transistor, a third field effect transistor, and a fourth field effect transistor, and the first field effect transistor of the first field effect transistor One pole and the second pole of the second field effect transistor respectively receive the third voltage signal, and the second pole of the first field effect transistor is connected to the second pole of the fourth field effect transistor and the heating module One end of the second field effect transistor, the first pole of the second field effect transistor is connected to the first pole of the third field effect transistor and the other end of the heating module, the second pole of the third field effect transistor is connected to the first pole of the first field effect transistor
  • the first poles of the four field effect transistors are respectively connected to ground GND, and the third poles of the first field effect transistor, the second field effect transistor, the third field effect transistor, and the fourth field effect transistor respectively receive A first control signal, the first control signal is used to control the first field effect transistor, the second field effect transistor, the third field effect transistor, the first pole of the fourth field effect transistor and The second poles are
  • the first field effect transistor, the second field effect transistor, the third field effect transistor, and the fourth field effect transistor can refer to the examples of field effect transistors Q1 , Q2 , Q3 , and Q4 in the above description and related description of FIG. 3 .
  • the first electrode of the first field effect transistor, the second field effect transistor, the third field effect transistor, and the fourth field effect transistor can refer to the examples of q11, q21, q31, and q41 in the above description and the related description of FIG.
  • the second voltage converter is further configured to receive a first control signal, the first control signal is generated by the processor when the temperature information is lower than a first threshold,
  • the generating the second voltage signal according to the third voltage signal includes: generating the second voltage signal according to the third voltage signal and the first control signal.
  • the first control signal is generated when the temperature information is lower than the first threshold, so when the condition that the temperature information is lower than the first threshold is not met, the first control signal will not be generated, so that the second voltage converter will not be subject to the first control
  • the effect of the signal can perform the original function.
  • the first control signal turns on or off the first pole and the second pole of the first field effect transistor and the third field effect transistor, the Turn off or conduct between the first pole and the second pole of the second field effect transistor and the fourth field effect transistor, and the first pole and the second pole of the first field effect transistor and the third field effect transistor
  • the voltage value of one end of the heating module is equal to the first pole
  • the voltage value of the three-voltage signal, the voltage value of the other end of the heating module is equal to 0; the conduction between the first pole and the second pole of the second field effect transistor and the fourth field effect transistor, the When the first pole and the second pole of the first field effect transistor and the third field effect transistor are turned off, the voltage value at one end of the heating module is equal to 0, and the voltage value at the other end of the heating module is equal to The voltage value of the third voltage signal.
  • the first control signal makes the connection between the first pole and the second pole of the first field effect transistor and the third field effect transistor The first pole and the second pole of the fourth field effect transistor are alternately turned on to generate the second voltage signal.
  • the first control signal is a square wave
  • the frequency and duty cycle of the first control signal are equal to the frequency and duty cycle of the second voltage signal.
  • the frequency and duty cycle of the first control signal are equal to the frequency and duty cycle of the second voltage signal, so that by directly adjusting the frequency and duty cycle of the first control signal, the frequency and duty cycle of the second voltage signal can be adjusted indirectly Ratio, to obtain the second voltage signal whose frequency and duty cycle meet the requirements.
  • the coil includes at least one of a wireless charging coil or a near field communication coil of an electronic device.
  • the electronic device includes one of the wireless charging coil and the near-field communication coil, heat can be generated to heat the battery, which can improve the structural flexibility of the battery heating device.
  • the heating control module and the heating module are realized by a wireless charging circuit in an electronic device.
  • Fig. 8 shows a schematic structural diagram of an exemplary electronic device 7 according to an embodiment of the present application.
  • an embodiment of the present application provides an electronic device 7 , where the electronic device includes the battery heating device 70 described above.
  • the electronic device 7 reference may be made to the example of the electronic device in the related description of FIG. 1 above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention concerne un appareil de chauffage de batterie et un dispositif électronique. L'appareil de chauffage de batterie est appliqué à un dispositif électronique, et l'appareil de chauffage de batterie comprend un processeur, une batterie, un module de commande d'émission de chaleur et un module d'émission de chaleur, la batterie étant adjacente au module d'émission de chaleur ; le processeur est utilisé pour commander la batterie afin de générer un premier signal de tension à courant continu lorsque des informations de température de la batterie sont inférieures à une première valeur de seuil ; le module de commande d'émission de chaleur est utilisé pour générer un second signal de tension à courant alternatif en fonction du premier signal de tension ; et le module d'émission de chaleur est utilisé pour générer de la chaleur selon le second signal de tension et fournir celle-ci à la batterie. Selon l'appareil de chauffage de batterie et le dispositif électronique dans les modes de réalisation de la présente invention, la flexibilité du mode de chauffage d'une batterie dans un environnement à basse température peut être améliorée, de telle sorte que la batterie peut être chauffée indépendamment du moment où le dispositif électronique est dans un scénario de charge ou dans un scénario de non-charge.
PCT/CN2022/118661 2021-09-27 2022-09-14 Appareil de chauffage de batterie et dispositif électronique WO2023045813A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111135513.XA CN115882116A (zh) 2021-09-27 2021-09-27 电池加热装置和电子设备
CN202111135513.X 2021-09-27

Publications (1)

Publication Number Publication Date
WO2023045813A1 true WO2023045813A1 (fr) 2023-03-30

Family

ID=85719729

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/118661 WO2023045813A1 (fr) 2021-09-27 2022-09-14 Appareil de chauffage de batterie et dispositif électronique

Country Status (2)

Country Link
CN (1) CN115882116A (fr)
WO (1) WO2023045813A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013149414A (ja) * 2012-01-18 2013-08-01 Mitsubishi Electric Corp 蓄電デバイスの加熱試験装置
US20180013311A1 (en) * 2016-07-07 2018-01-11 Apple Inc. Electronic Device With Wireless Charging and Battery Heating
CN110086222A (zh) * 2019-04-29 2019-08-02 努比亚技术有限公司 一种充放电方法、装置及移动终端
CN110459837A (zh) * 2019-08-09 2019-11-15 华为技术有限公司 电子设备和电池加热方法
CN112928789A (zh) * 2019-12-05 2021-06-08 荣耀终端有限公司 一种充电方法及电子设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013149414A (ja) * 2012-01-18 2013-08-01 Mitsubishi Electric Corp 蓄電デバイスの加熱試験装置
US20180013311A1 (en) * 2016-07-07 2018-01-11 Apple Inc. Electronic Device With Wireless Charging and Battery Heating
CN110086222A (zh) * 2019-04-29 2019-08-02 努比亚技术有限公司 一种充放电方法、装置及移动终端
CN110459837A (zh) * 2019-08-09 2019-11-15 华为技术有限公司 电子设备和电池加热方法
CN112928789A (zh) * 2019-12-05 2021-06-08 荣耀终端有限公司 一种充电方法及电子设备

Also Published As

Publication number Publication date
CN115882116A (zh) 2023-03-31

Similar Documents

Publication Publication Date Title
WO2020169037A1 (fr) Circuit de décharge et dispositif électronique
US20210119493A1 (en) Wireless charging transmitting circuit, wireless charging receiving circuit, and method
WO2019105361A1 (fr) Système, procédé et circuit de charge sans fil, et dispositif terminal
WO2020019300A1 (fr) Circuit d'alimentation électrique de dispositif terminal, dispositif terminal et procédé d'alimentation électrique
WO2017088138A1 (fr) Dispositif de charge pour terminal mobile
KR102362972B1 (ko) 배터리 전기공급 회로, 충전 대상 기기 및 충전 제어 방법
CN103812195A (zh) 一种无线充放电电路、终端设备及无线充放电方法
TW200937855A (en) Driving circuit and driving method for MOS transistor and power management system thereof
WO2012009935A1 (fr) Dispositif de gestion pour circuit de charge et terminal sans fil
WO2020124550A1 (fr) Procédé de commande de charge, dispositif à charger, dispositif de charge sans fil et support de mémoire
WO2020124571A1 (fr) Dispositif chargeur, dispositif à charger, procédé de charge, et support d'informations informatique
WO2022194106A1 (fr) Circuit de charge et de décharge de deux batteries et procédé de commande, et dispositif électronique
WO2022143726A1 (fr) Système de charge, dispositif électronique et procédé de commande de charge associé
WO2020124563A1 (fr) Procédé de charge sans fil, dispositif à charger, appareil de charge sans fil, et support d'informations
WO2019242020A1 (fr) Dispositif de charge, terminal mobile et procédé de commande de charge
WO2022206326A1 (fr) Procédé, appareil et dispositif de charge sans fil, et support de stockage
TW202203046A (zh) 具有多個Ｔｙｐｅ－Ｃ介面的系統及其控制方法
US20180145525A1 (en) Charging managment method and system thereof
US20200328677A1 (en) Single-Inductor Multiple-Output (SIMO) Power Converter with a Cross-Regulation Switch
WO2023045813A1 (fr) Appareil de chauffage de batterie et dispositif électronique
WO2020253520A1 (fr) Dispositif à charger et procédé de charge
WO2021052188A1 (fr) Puce de redressement et dispositif terminal
TW201017393A (en) Embedded system with power-saving function and power-saving method thereof
CN113422410A (zh) 充电装置及移动终端
WO2023193646A1 (fr) Circuit, procédé d'alimentation électrique, dispositif électronique et produit programme d'ordinateur

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: 22871860

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE