Battery heating device, method and related apparatus

Abstract

Embodiments of the present application provide a battery heating device, method and related equipment. The battery heating device comprises: a magnetic conducting unit located on one side of the battery; a first coil located on the side of the magnetic conducting unit facing the battery; an inverter module configured to provide an alternating current signal to the first coil when receiving an electrical energy input, so that the first coil generates an alternating magnetic field to heat the battery. In this way, the battery heating device can generate an alternating magnetic field to cause the metal of the outer layer of the battery to generate eddy current loss, thereby heating the battery to improve the endurance of the battery.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to a battery heating device, method and related equipment. Background Technology

[0002] Electronic devices may contain batteries that can store and provide electrical energy. For example, electronic devices can charge their batteries using a power source; they can also use batteries to power various functions, such as making phone calls and taking photos; and they can even use batteries to charge other devices.

[0003] However, in potential implementations, the battery life of electronic devices is relatively poor. For example, in low-temperature scenarios, both the charging and discharging performance of batteries decrease; the power consumption of electronic devices increases, and the charging speed is slower; the battery cannot power electronic devices for extended periods, affecting the user experience. Summary of the Invention

[0004] This application provides a battery heating device, method, and related equipment, which are applied in the field of terminal technology. In a low-temperature environment, an alternating magnetic field is generated by a coil to heat the battery, thereby improving the battery's endurance.

[0005] In a first aspect, embodiments of this application propose a battery heating device, which includes: a magnetic conductive unit 302, a first coil (coil 301), and an inverter module 804; as Figure 3 As shown: the magnetic conductive unit is located on one side of the battery 104; the coil 301 is located on the side of the magnetic conductive unit 302 facing the battery 104; the inverter module 804 is used to provide an AC signal to the coil 301 when receiving electrical energy input, so that the coil 301 generates an alternating magnetic field to heat the battery 104.

[0006] Understandably, when battery 104 is in an alternating magnetic field, eddy current losses can occur in the metal within battery 104, causing the battery to heat up. Since some electronic devices do not support wireless charging, they cannot convert DC signals to AC signals. To address the battery life issue in these devices at low temperatures, the battery heating device can be equipped with an inverter module 804; the inverter module 804 can be used to provide AC signals to coil 301.

[0007] In this way, the battery heating device can generate an alternating magnetic field, causing eddy current losses in the outer metal of the battery, thereby heating the battery and improving its range.

[0008] Optionally, the battery heating device also includes a battery 104; the battery 104 includes a metal outer layer (e.g., an aluminum-plastic film 201); the metal outer layer is used to sense electromagnetic signals from the coil 301 and generate eddy current losses to heat the battery 104. Thus, the inclusion of a metal material in the battery enables it to generate eddy current losses under an alternating magnetic field, thereby achieving battery heating.

[0009] Optionally, the battery heating device also includes: a power module 801; such as Figure 8 As shown: Power module 801 is connected to inverter module 804, and power module 801 is used to input a DC signal to inverter module 804. In this embodiment, the DC signal can be VBUS or VBAT; specifically, when the battery is charging, power module 801 can provide VBUS; when the battery is not charging, power module 801 can provide VBAT. In this way, power module 801 can supply DC power to inverter module 804, so that inverter module 804 can convert the DC signal into an AC signal.

[0010] Optionally, the power module 801 includes a battery 104; when the battery heating device has no external power supply, the battery heating device can use the electrical energy of the battery 104 to heat itself. Specifically, the battery 104 can be used to input a first DC signal (VBAT) to the inverter module 804 when the battery temperature is less than or equal to a first preset temperature (the battery 104 is in a low-temperature environment) and the battery 104 is in an uncharged state. The inverter module 804 is specifically used to convert the first DC signal (VBAT) into a first AC signal and input the first AC signal to the coil 301; the coil 301 is specifically used to receive the first AC signal and generate a first electromagnetic signal. The first AC signal and the first electromagnetic signal are related to VBAT. Thus, when the battery 104 is in a low-temperature uncharged environment, the battery 104 can be used to power the battery heating device and heat the battery 104 itself, thereby improving the battery's endurance.

[0011] Optionally, the power module 801 includes an external power supply; when the battery heating device is powered by an external power source, the battery heating device can use the electrical energy from the external power supply to heat the battery 104. Specifically, the external power supply is used to input a second DC signal (VBUS) to the inverter module 804 when the battery temperature is less than or equal to a first preset temperature (the battery 104 is in a low-temperature environment) and the battery 104 is in a charging state. The inverter module 804 is specifically used to convert the second DC signal (VBUS) into a second AC signal and input the second AC signal to the coil 301; the coil 301 is specifically used to receive the second AC signal and generate a second electromagnetic signal. The second AC signal and the second electromagnetic signal are related to VBUS. Thus, when the battery 104 is in a low-temperature charging environment, an external power supply can be used to power the battery heating device to heat the battery 104, thereby improving the battery's range.

[0012] Optionally, the battery heating device also includes a first switching unit (such as...). Figure 8 The switch selection module 803 in the middle, and / or such as Figure 9 The first switching unit (Q3) is located between the power module 801 and the inverter module 804, and serves to turn the circuit between the power module 801 and the inverter module 804 on or off. The battery heating device also includes a control module 802, which can be used to control the on / off state of the circuit between the power module 801 and the inverter module 804. For example, the control module 802 can control the first switching unit to turn on when the battery temperature is less than or equal to a first preset temperature (battery 104 is in a low-temperature environment); and control the first switching unit to turn off when the battery temperature is greater than a second preset temperature (a preset value to which battery 104 is heated); the first preset temperature is less than the second preset temperature. Thus, by controlling the on / off state of the first switching unit, the battery heating device can heat the battery in a low-temperature environment and stop heating when the battery temperature reaches the second preset temperature.

[0013] Optionally, the power module 801 specifically includes: a second switching unit (e.g., switching unit Q1) and a third switching unit (e.g., switching unit Q2), such as... Figure 9As shown, switch unit Q1 is connected to both the external power supply interface (VBUS interface) and switch selection module 803; switch unit Q2 is connected to both battery 104 (VBAT) and switch selection module 803. When battery 104 is charging, switch unit Q1 is in the ON state and switch unit Q2 is in the OFF state, allowing VBUS to access the circuit. When battery 104 is not charging, switch unit Q1 is in the OFF state and switch unit Q2 is in the ON state, allowing VBAT to access the circuit. This allows selection of the appropriate power source based on the battery status, improving charging efficiency.

[0014] It should be noted that the electronic device includes a charger chip, which is connected to both the battery 104 and an external power source. At low temperatures, the charger chip is disabled, preventing the external power source from charging the electronic device. If the battery 104 is used to power the battery heating device while it is charging, it increases the battery's power consumption and affects charging efficiency. Therefore, while the battery 104 is charging, an external power source can be used to supplement its energy, and the battery 104 should be charged only after the temperature reaches the charger chip's activation temperature.

[0015] Optionally, the power supply module 801 specifically includes: a first diode (e.g., diode D1) and a second diode (diode D2), such as... Figure 10 As shown in Figure a: Diode D1 is connected to both the external power supply interface (VBUS interface) and the switch selection module 803; diode D2 is connected to both the battery 104 (VBAT) and the switch selection module 803. In this way, the power module 801 can automatically adjust its output voltage based on the magnitude of the two voltages, thereby reducing external control. For example, when charging, if VBUS is greater than VBAT, the power module 801 outputs VBUS; when not charging, if VBUS is 0, the power module 801 outputs VBAT.

[0016] Optionally, the battery heating device further includes: a graphite layer 303, which is located on the side of the coil 301 facing the battery 104, such as... Figure 3 As shown. In this way, the magnetic field strength in the middle of coil 301 is relatively strong, resulting in higher heat in the middle of battery 104. The graphite layer 303 can quickly conduct the heat in the middle to both sides of battery 104, thus achieving uniform heat dissipation.

[0017] Optionally, the outer metal layer of battery 104 includes an aluminum-plastic film 201. It is understood that this application embodiment does not limit the metal material of the outermost metal layer of the battery; the metal material in the outer metal layer of battery 104 can be aluminum or other metal materials.

[0018] Secondly, embodiments of this application provide an electronic device, which may also be referred to as a terminal device, terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. Terminal devices can be mobile phones, smart TVs, wearable devices, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and so on.

[0019] The electronic device includes: a magnetic guiding unit 302, a first coil (coil 301), and an inverter module 804; such as Figure 3 As shown: the magnetic conductive unit is located on one side of the battery 104; the coil 301 is located on the side of the magnetic conductive unit 302 facing the battery 104; the inverter module 804 is used to provide an AC signal to the coil 301 when receiving electrical energy input, so that the coil 301 generates an alternating magnetic field to heat the battery 104. In this way, the electronic device can generate an alternating magnetic field to cause eddy current losses in the metal outer layer of the battery, thereby heating the battery and improving its battery life.

[0020] Optionally, the electronic device also includes a battery 104; the battery 104 includes a metal outer layer (e.g., an aluminum-plastic film 201); the metal outer layer is used to sense electromagnetic signals from the coil 301 and generate eddy current losses to heat the battery 104. Thus, the inclusion of a metal material in the battery enables it to generate eddy current losses under an alternating magnetic field, thereby achieving heating of the battery.

[0021] Optionally, the electronic device may also include: a power supply module 801; such as Figure 8As shown: Power module 801 is connected to inverter module 804, and power module 801 is used to input a DC signal to inverter module 804. In this embodiment, the DC signal can be VBUS or VBAT; specifically, when the battery is charging, power module 801 can provide VBUS; when the battery is not charging, power module 801 can provide VBAT. Thus, power module 801 can supply DC power to inverter module 804, enabling inverter module 804 to convert the DC signal into an AC signal.

[0022] Optionally, the power module 801 includes a battery 104; when the electronic device has no external power supply, the electronic device can use the electrical energy of the battery 104 to heat itself. Specifically, the battery 104 can be used to input a first DC signal (VBAT) to the inverter module 804 when the battery temperature is less than or equal to a first preset temperature (the battery 104 is in a low-temperature environment) and the battery 104 is in an uncharged state. The inverter module 804 is specifically used to convert the first DC signal (VBAT) into a first AC signal and input the first AC signal to the coil 301; the coil 301 is specifically used to receive the first AC signal and generate a first electromagnetic signal. The first AC signal and the first electromagnetic signal are related to VBAT. Thus, when the battery 104 is in a low-temperature uncharged environment, the battery 104 can be used to power the coil 301 and heat the battery 104 itself, thereby improving the battery's endurance.

[0023] Optionally, the power module 801 includes an external power supply; when the electronic device is powered externally, the electronic device can use the power from the external power supply to heat the battery 104. Specifically, the external power supply is used to input a second DC signal (VBUS) to the inverter module 804 when the battery temperature is less than or equal to a first preset temperature (the battery 104 is in a low-temperature environment) and the battery 104 is in a charging state. The inverter module 804 is specifically used to convert the second DC signal (VBUS) into a second AC signal and input the second AC signal to the coil 301; the coil 301 is specifically used to receive the second AC signal and generate a second electromagnetic signal. The second AC signal and the second electromagnetic signal are related to VBUS. Thus, when the battery 104 is in a low-temperature charging environment, the external power supply can be used to power the coil 301 to heat the battery 104, thereby improving the battery's range.

[0024] Optionally, the electronic device may also include a first switching unit (such as...) Figure 8 The switch selection module 803 in the middle, and / or such as Figure 9The electronic device includes a switching unit Q3, located between the power module 801 and the inverter module 804. This first switching unit functions to either turn the circuit between the power module 801 and the inverter module 804 on or off. The electronic device also includes a control module 802, which controls the on / off state of the circuit between the power module 801 and the inverter module 804. For example, the control module 802 can control the first switching unit to turn on when the battery temperature is less than or equal to a first preset temperature (battery 104 is in a low-temperature environment); and control the first switching unit to turn off when the battery temperature is greater than a second preset temperature (a preset value to which battery 104 is heated); the first preset temperature is less than the second preset temperature. Thus, by controlling the on / off state of the first switching unit, the electronic device can heat the battery in a low-temperature environment and stop heating when the battery temperature reaches the second preset temperature.

[0025] Optionally, the power module 801 specifically includes: a second switching unit (e.g., switching unit Q1) and a third switching unit (e.g., switching unit Q2), such as... Figure 9 As shown, switch unit Q1 is connected to both the external power supply interface (VBUS interface) and switch selection module 803; switch unit Q2 is connected to both battery 104 (VBAT) and switch selection module 803. When battery 104 is charging, switch unit Q1 is in the ON state and switch unit Q2 is in the OFF state, allowing VBUS to access the circuit. When battery 104 is not charging, switch unit Q1 is in the OFF state and switch unit Q2 is in the ON state, allowing VBAT to access the circuit. This allows selection of the appropriate power source based on the battery status, improving charging efficiency.

[0026] Optionally, the power supply module 801 specifically includes: a first diode (e.g., diode D1) and a second diode (diode D2), such as... Figure 10 As shown in Figure a: Diode D1 is connected to both the external power supply interface (VBUS interface) and the switch selection module 803; diode D2 is connected to both the battery 104 (VBAT) and the switch selection module 803. In this way, the power module 801 can automatically adjust its output voltage based on the magnitude of the two voltages, thereby reducing external control. For example, when charging, if VBUS is greater than VBAT, the power module 801 outputs VBUS; when not charging, if VBUS is 0, the power module 801 outputs VBAT.

[0027] Optionally, the electronic device also includes: a graphite layer 303, which is located on the side of the coil 301 facing the battery 104, such as... Figure 3As shown. In this way, the magnetic field strength in the middle of coil 301 is relatively strong, resulting in higher heat in the middle of battery 104. The graphite layer 303 can quickly conduct the heat in the middle to both sides of battery 104, thus achieving uniform heat dissipation.

[0028] Optionally, the outer metal layer of battery 104 includes an aluminum-plastic film 201. It is understood that this application embodiment does not limit the metal material of the outermost metal layer of the battery; the metal material in the outer metal layer of battery 104 can be aluminum or other metal materials.

[0029] Optionally, the electronic device may also include: a screen 101, a mid-frame 102, and a back cover 103, such as Figure 6 As shown: the back cover 103 is located on the side of the magnetic conductive unit 302 away from the coil 301; the middle frame 102 is located on the side of the battery 104 away from the coil 301; and the screen 101 is located on the side of the middle frame 102 away from the battery 104. In this way, the battery heating device can be positioned close to the battery 104, allowing the alternating magnetic field generated by the coil 301 to act on the aluminum-plastic film 201 of the battery 104, thereby generating eddy current losses and raising the battery temperature.

[0030] Optionally, the electronic device may also include: a screen 101, a mid-frame 102, and a back cover 103, such as Figure 5 As shown: the back cover 103 is located on the side of the battery 104 away from the coil 301; the middle frame 102 is located on the side of the magnetic conductive unit 302 away from the coil 301; and the screen 101 is located on the side of the middle frame 102 away from the magnetic conductive unit 302. In this way, the battery heating device can be positioned close to the battery 104, allowing the alternating magnetic field generated by the coil 301 to act on the aluminum-plastic film 201 of the battery 104, thereby generating eddy current losses and raising the battery temperature.

[0031] Thirdly, embodiments of this application provide a battery heating method applied to the electronic device as shown in the second aspect; the method includes: when the battery temperature is detected to be less than or equal to a first preset temperature, controlling coil 301 to generate an alternating magnetic field to heat the battery 104; when the battery temperature is detected to be greater than a second preset temperature, controlling coil 301 to stop generating the alternating magnetic field; the second preset temperature is greater than the first preset temperature. In this way, the electronic device can heat the battery 104 in a low-temperature environment, improving battery life; after the battery temperature rises to a certain level, the battery 104 can be used normally, and to avoid the battery 104 temperature from becoming too high, heating the battery 104 can be stopped.

[0032] Optionally, before controlling the first coil to generate an alternating magnetic field to heat the battery, the following steps are included:

[0033] When the battery 104 is not charged, the control power module 801 inputs a first DC signal (VBAT) to the inverter module 804; when the battery temperature is detected to be less than or equal to a first preset temperature (battery 104 is in a low-temperature environment), the control switch selection module 803 is turned on; the control coil 301 generates an alternating magnetic field to heat the battery, including: the inverter module 804 converting the first DC signal (VBAT) into a first AC signal; and the first coil generating a first electromagnetic signal based on the first AC signal. In this way, the electronic device can use the battery 104 to power the coil 301 for heating the battery when it is not charged.

[0034] Optionally, before the control coil 301 generates an alternating magnetic field to heat the battery 104, the following steps are included:

[0035] When the battery 104 is charging, the control power module 801 inputs a second DC signal (VBUS) to the inverter module 804; when the battery temperature is detected to be less than or equal to a first preset temperature, the control switch selection module 803 is turned on; the control coil 301 generates an alternating magnetic field to heat the battery 104, including: the inverter module 804 converting the second DC signal (VBUS) into a second AC signal; and the coil 301 generating a second electromagnetic signal based on the second AC signal. Thus, the electronic device can use an external power source to power the coil 301 to heat the battery during charging.

[0036] Optionally, before controlling the first switch unit to turn on, the method further includes: displaying a prompt message to prompt the user whether to heat the battery when the battery temperature is less than or equal to a first preset temperature; the prompt message includes a first control (a control for activating the battery heating function); and controlling the switch selection module 803 to turn on, including: responding to a trigger operation on the first control, controlling the switch selection module 803 to turn on. This allows the user to be prompted whether to activate the battery heating function in low-temperature environments, and the battery heating process can be activated or deactivated based on the user's selection, improving the user experience.

[0037] Optionally, the control coil 301 can be made to stop generating the alternating magnetic field by turning off the control switch selection module 803. This allows heating of the battery 104 to stop once it reaches a certain temperature, reducing the risk of overheating and damage to the device.

[0038] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements the method as described in the first aspect.

[0039] Fifthly, embodiments of this application provide a computer program product, which includes a computer program that, when run, causes a computer to perform the method as described in the first aspect.

[0040] In a sixth aspect, embodiments of this application provide a chip system including at least one processor and a communication interface, the communication interface and the at least one processor being interconnected via a line, the at least one processor being used to run computer programs or instructions to perform the method as described in the first aspect.

[0041] It should be understood that aspects four through six of this application correspond to the technical solutions of aspect three of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the electronic device 100 in a possible implementation;

[0043] Figure 2 This is a schematic diagram of the battery structure in a possible implementation.

[0044] Figure 3 This is a schematic diagram of the structure of a battery heating device provided in an embodiment of this application;

[0045] Figure 4 This is a schematic diagram of the heating principle of a battery heating device provided in an embodiment of this application;

[0046] Figure 5 This is a schematic diagram of the structure of an electronic device 100 provided in an embodiment of this application;

[0047] Figure 6 This is a schematic diagram of the structure of another electronic device 100 provided in an embodiment of this application;

[0048] Figure 7 This is a schematic diagram of the structure of another electronic device 100 provided in an embodiment of this application;

[0049] Figure 8 This is a schematic diagram of the battery heating circuit in an embodiment of this application;

[0050] Figure 9 This is a schematic diagram of the structure of a battery heating circuit in an embodiment of this application;

[0051] Figure 10 This is a schematic diagram of another battery heating circuit in an embodiment of this application;

[0052] Figure 11 This is a schematic flowchart of a battery heating method according to an embodiment of this application;

[0053] Figure 12 This is a schematic diagram of the structure of the electronic device 100 provided in the embodiments of this application. Detailed Implementation

[0054] To facilitate a clear description of the technical solutions in the embodiments of this application, some terms and technologies involved in the embodiments of this application will be briefly introduced below:

[0055] 1. Electronic equipment

[0056] The electronic devices in this application embodiment may include handheld devices with image processing functions, vehicle-mounted devices, etc. For example, some electronic devices include: mobile phones, tablets, PDAs, laptops, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices (such as vehicle infotainment systems), wearable devices, electronic devices in 5G, or future evolutions of public land mobile communications. The embodiments of this application do not limit the scope of electronic devices in a network (PLMN).

[0057] By way of example and not limitation, in this embodiment, the electronic device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as hearing aids, glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0058] Furthermore, in this application embodiment, the electronic device can also be an electronic device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects through communication technology, thereby realizing the intelligent interconnection of humans and machines and the interconnection of things.

[0059] The electronic devices in the embodiments of this application may also be referred to as: terminal equipment, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.

[0060] 2. Structure of electronic devices

[0061] The following is a brief explanation of the structure of electronic devices, using a mobile phone as an example. Figure 1 As shown:

[0062] For ease of explanation, the placement of electronic device 100 is as follows: Figure 1 As shown in Figure a, the electronic device 100 may include a screen 101, a mid-frame 102, and a back cover (also known as a battery cover, rear cover, etc.) 30. The screen 101 or the back cover 103 of the electronic device 100 may be parallel to the xy plane. Taking the case where the z-value of the plane containing the screen 101 is less than the z-value of the plane containing the back cover 103 as an example, the electronic device 100 displays the mid-frame 102 and the back cover 103, with the screen 101 being obscured by the back cover 103.

[0063] Referring to the placement method of the aforementioned electronic device 100, Figure 1Figure b illustrates the internal structure of the electronic device 100; the electronic device 100 may specifically include: a screen 101, a mid-frame 102, a battery 104, and a back cover 103. The plane in which any of the above components is located can be parallel to the xy-plane, and the z-values ​​of the planes in which the above components are located increase sequentially. That is to say, a motherboard 105 and a battery 104 may be disposed between the mid-frame 102 and the back cover 103.

[0064] Screen 101 is used to display images.

[0065] The middle frame 102 is used to support and protect the internal components of the electronic device 100. The middle frame 102 may include a first part 1021, a second part 1022, and a third part 1023. The first part 1021, the second part 1022, and the third part 1023 are arranged sequentially along the negative y-axis. The first part 1021 is connected to the second part 1022, and the second part 1022 is connected to the third part 1023. At least one side of any two of the first part 1021, the second part 1022, and the third part 1023 is on the same plane. The first part 1021 and the third part 1023 have the same thickness along the z-direction, and the thickness of the second part 1022 along the z-direction is less than the thickness of the first part 1021 and the third part 1023 along the z-direction.

[0066] The first part 1021 is used to set up the camera, audio devices, etc.; the second part 1022 can be the battery compartment for stable placement of the battery; the third part 1023 is used to set up the audio devices, USB interface and some sensors, etc.

[0067] The motherboard 105 can be located on the side of the first part 1021 of the middle frame 102 facing the back cover 103.

[0068] The motherboard 105 can be used to connect and control various devices to support the electronic device 100 in performing a variety of functions.

[0069] Battery 104 is located on the second part of the middle frame 102 facing the back cover 103; it is used to store and provide electrical energy.

[0070] The back cover 103 is used to protect the internal components of the electronic device 100.

[0071] 3. Magnetic Conducting Unit: This can be nanocrystalline (also known as iron-based nanocrystalline soft magnetic material). Nanocrystalline materials are magnetic materials formed by alloys of five materials: iron, silicon, boron, copper, and niobium (Fe, Si, B, Cu, Nb), which are intermediate between amorphous and crystalline materials. The crystal size of this magnetic material is around 10 nm, hence the name nanocrystalline.

[0072] Nanocrystals can be used in mobile phone wireless coils. Nanocrystals possess high saturation magnetic induction, reaching 1.2–1.4 Tesla (T); simultaneously, they exhibit very high permeability, with relative permeability reaching tens of thousands. When a coil generates a magnetic field, nanocrystals can be used to shield magnetic circuits, guide magnetic circuits, and enhance coil inductance. A single layer of nanocrystals is approximately tens of micrometers thick. In practical applications, electronic devices can also employ multilayer nanocrystals to increase wireless charging power and avoid saturation.

[0073] 4. Battery: Figure 2 Figure a illustrates the structure of a battery 104. The battery 104 may include a positive electrode 205, a separator 206, a negative electrode 207, and an aluminum-plastic film 201. The internal cell of the battery 104 is constructed by sequentially stacking the positive electrode 205, separator 206, and negative electrode 207; it is externally encapsulated with the aluminum-plastic film 201; positive electrode tabs 203 and negative electrode tabs 204 are welded to insulating sheets 202 on both sides; electrolyte 208 is injected into the cell and then sealed.

[0074] Aluminum-plastic film 201 (also known as aluminum-plastic film for lithium-ion batteries) is a packaging material for soft-pack lithium-ion batteries. It possesses puncture resistance, corrosion resistance, high temperature resistance, and good barrier properties. Aluminum-plastic film 201 protects the internal materials of the lithium-ion battery. Soft-pack lithium-ion batteries, with their advantages of high safety performance, light weight, thinness, and high energy density, are widely used in 3C smart digital products, new energy electric vehicles, and energy storage equipment.

[0075] Aluminum-plastic film 201 is typically composed of multiple layers of composite materials, for example, Figure 2 Figure b in the diagram illustrates a structural schematic of the aluminum-plastic film 201. The outermost layer of the aluminum-plastic film 201 is the outer barrier layer 2011, typically composed of nylon (PA) or polyethylene terephthalate (PET), used to protect the intermediate aluminum foil from scratches and reduce damage to the battery from external factors such as impacts. The middle layer of the aluminum-plastic film 201 is the permeation barrier layer 2013, typically composed of aluminum foil, used to prevent the intrusion of oxygen and moisture. The innermost layer of the aluminum-plastic film 201 is the heat-sealing layer 2014, typically modified cast polypropylene (CPP), which serves as a sealing and adhesive layer. The outer barrier layer 2011 and the permeation barrier layer 2013 are bonded together by an adhesive layer (SFL) 2012, and the heat-sealing layer 2014 and the permeation barrier layer 2013 are bonded together by the SFL layer 2012.

[0076] 5. Other terms

[0077] In this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0078] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0079] It should be noted that the phrase "at...time" in the embodiments of this application can refer to the instant at which a certain situation occurs, or to a period of time after the occurrence of a certain situation; the embodiments of this application do not specifically limit this. Furthermore, the display interface provided in the embodiments of this application is merely an example, and the display interface may include more or less content.

[0080] In low-temperature environments, both the charging and discharging performance of batteries are lower than those at room temperature. This is because low temperatures reduce the activity of the active materials involved in chemical reactions within the battery, increase the battery's internal resistance, and lead to increased energy loss during charging and discharging, resulting in the following problems.

[0081] For example, when users use electronic devices outdoors in cold regions, the remaining battery power decreases more quickly, resulting in shorter battery life. Another example is when users charge electronic devices in cold environments, the battery level rises more slowly, leading to low charging efficiency.

[0082] In one possible implementation, at low temperatures, the components in an electronic device can generate heat during operation. This heat can, to some extent, raise the battery temperature, slow down the rate of battery performance degradation, and improve the battery's charging and discharging performance. However, this method relies on the electronic device's own heat generation, resulting in a slow battery heating rate and insufficient temperature rise. Furthermore, the heated battery still exhibits significant internal resistance, making this heating method ineffective for battery heating.

[0083] In view of this, this application provides a battery heating device that heats the battery by placing it in an alternating magnetic field, causing the metal in the battery to generate heat through eddy currents. Thus, to achieve the battery heating function, a metal layer must exist in the battery, and the battery must be placed in an alternating magnetic field.

[0084] The aluminum-plastic film of the battery may include aluminum metal, which can generate eddy currents in an alternating magnetic field. At the same time, the aluminum-plastic film wraps the internal materials of the battery, which can transfer heat to various parts of the battery more evenly, so that the battery can heat up quickly in low-temperature environments.

[0085] Furthermore, a coil supplied with an alternating current signal can generate an alternating magnetic field. Some electronic devices support wireless charging; these devices can use a wireless charging chip to convert direct current signals into alternating current signals, enabling the coil to generate an alternating magnetic field based on the alternating current signal. Other electronic devices may not support wireless charging; in this case, an inverter circuit can be incorporated to convert direct current signals into alternating current signals, allowing the coil to generate an alternating magnetic field based on the alternating current signal.

[0086] It should be noted that, in the embodiments of this application, the electronic device capable of implementing the battery heating function can be an electronic device that does not support wireless charging. For such electronic devices, the embodiments of this application provide a battery heating device and method for heating the battery in a low-temperature environment.

[0087] To facilitate understanding of the technical solutions in the embodiments of this application, the following will first be combined with... Figure 3 The battery heating device in the embodiments of this application will be described.

[0088] The battery heating device may include a coil 301, a magnetically conductive unit 302, a graphite layer 303, and a battery 104. The coil 301 may be located on the side of the magnetically conductive unit 302 facing the graphite layer 303, and the graphite layer 303 may be located on the side of the coil 301 facing the battery 104. The planes of the magnetically conductive unit 302, the coil 301, and the graphite layer 303 are parallel to each other and parallel to the first surface of the battery 104. The first surface of the battery 104 may, for example: Figure 1 In Figure b, battery 104 is located in the plane along the xy direction.

[0089] Among them, coil 301 can be used to heat the battery with an alternating magnetic field; magnetic conductive unit 302 can be used to shield and guide the magnetic circuit and enhance magnetic induction; graphite layer 303 can be used for heat dissipation.

[0090] The following is combined with Figure 4 right Figure 3 The heating principle of the battery heating device shown is explained below, such as... Figure 4 As shown:

[0091] In low-temperature scenarios, the electronic device 100 can control the coil 301 to receive an alternating current signal. The energized coil 301 converts the alternating current signal into an electromagnetic signal, thereby generating an alternating magnetic field. Taking an example where the current magnetic field direction is from the center of the coil 301 to its periphery, the multiple magnetic field lines and their directions can be described as follows: Figure 4 As shown, most of the magnetic field lines are located below the magnetically conductive unit 302; among them, some magnetic field lines form a magnetic circuit through the magnetically conductive unit 302, and some magnetic field lines reach the surface of the battery 104 through the graphite layer 303.

[0092] like Figure 2 As shown, the outer surface of the battery 104 may include an aluminum-plastic film 201, and the barrier layer 2013 of the aluminum-plastic film 201 includes a metal, such as aluminum. Aluminum can sense electromagnetic signals and generate eddy currents. The eddy currents in the battery 104 can be as follows: Figure 4 As shown in the dashed box, aluminum metal converts electromagnetic signals into heat energy through eddy currents, heating the inside of the battery, raising the temperature of battery 104, and thus improving battery performance.

[0093] In this embodiment, the magnetic field lines are absent or present in small quantities above the magnetically conductive unit 302 because: the magnetically conductive unit 302 has a very high permeability; when magnetic field lines pass through the magnetically conductive unit 302, the magnetically conductive unit 302 can guide the magnetic field lines through the interior of the magnetically conductive unit 302, forming a... Figure 4 The magnetic field lines loop shown is illustrated. In this way, the magnetic guiding unit 302 can guide the magnetic loop, reduce the magnetic field lines above the magnetic guiding unit 302, and concentrate most of the magnetic field lines between the magnetic guiding unit 302 and the battery 104, thereby enhancing the magnetic field strength induced in the aluminum metal in the battery 104.

[0094] In this embodiment, the specifications of the graphite layer 303 can be equal to or slightly smaller than those of the battery 104. The graphite layer 303 has a large contact area with the battery 104 and excellent thermal conductivity, allowing the heat generated by the eddy currents to be quickly and evenly transferred to the entire battery 104, thus achieving rapid heating of the battery 104.

[0095] Understandably, because the magnetic field strength in the middle of coil 301 is greater than that on the outer side when coil 301 generates a magnetic field, the eddy current loss generated by the aluminum metal in the middle part of battery 104 is higher when heating battery 104, resulting in a higher temperature in the middle part of battery 104 compared to the sides. Here, a graphite layer 303 is placed between coil 301 and battery 104. The graphite layer 303 can quickly conduct heat from the middle part of battery 104 to the sides of battery 104, thus achieving uniform heat dissipation.

[0096] Optionally, in the battery heating device, the graphite layer 303 may not be included between the coil 301 and the battery 104. Since aluminum has good thermal conductivity and is relatively uniformly wrapped around the outer layer of the battery 104, after the aluminum generates heat loss, the electronic device can also use the aluminum to uniformly transfer heat to the entire battery 104, thereby achieving rapid heating of the battery 104. This process may not involve the graphite layer 303 for heat conduction.

[0097] In this way, the battery heating device can generate an alternating magnetic field, causing eddy current losses in the metal outer layer of the battery, thereby heating the battery.

[0098] It should be noted that in possible implementations, some electronic devices may support wireless charging, and these devices may also include a coil module. The charging coil in this coil module is used to wirelessly charge the battery. Therefore, the selection of the charging coil prioritizes the conductivity of the material; for example, the charging coil can be made of copper. Furthermore, to reduce energy loss during energy conversion, the cross-sectional area of ​​the wires in the charging coil can be larger to reduce impedance. However, in this embodiment, the coil 301 is used to generate an alternating magnetic field to heat the battery, not to transmit electrical signals. Therefore, the coil 301 in this embodiment differs from the coils in possible implementations.

[0099] For example, in this embodiment, the cross-sectional area of ​​the conductor in coil 301 can be smaller than that of the conductor in the charging coil. This is because, in this embodiment, coil 301 is mainly used for heating. A smaller cross-sectional area of ​​the conductor in coil 301 increases the impedance that coil 301 can provide. On one hand, the electronic device can use coil 301 to generate an alternating magnetic field, heating the battery through the eddy current heating effect. On the other hand, the increased impedance of coil 301 leads to increased energy loss, which can be converted into heat. The electronic device can generate heat through coil 301 and transfer it to battery 104 to further improve battery heating efficiency. In this embodiment, the material, thickness, and number of turns of coil 301 can be set according to factors such as cost, thickness, and manufacturability; this embodiment does not impose any limitations on these aspects.

[0100] The following is combined with Figures 5-7 The location of the aforementioned battery heating device in the electronic device will be explained.

[0101] Figure 5 This application provides a schematic diagram of the structure of an electronic device 100, as shown in the embodiment of the present application. Figure 5 As shown:

[0102] Electronic device 100 may include a screen 101, a mid-frame 102, a battery 104, and a back cover 103; the mid-frame 102 may be located on the side of the screen 101 facing the battery 104, and the battery 104 may be located on the side of the back cover 103 facing the mid-frame 102; the positional relationship of the screen 101, mid-frame 102, battery 103, and back cover 103 may be as follows: Figure 5 As shown in Figure a.

[0103] In the first implementation, the battery heating device can be disposed between the battery 104 and the middle frame 102. The battery heating device may include a coil 301, a magnetic conductive unit 302, and a graphite layer 303. Specifically, the magnetic conductive unit 302 may be located on the side of the middle frame 102 facing the battery 104; the coil 301 may be located on the side of the magnetic conductive unit 302 facing the battery 104; and the graphite layer 303 may be located on the side of the coil 301 facing the battery 104.

[0104] In other words, referencing Figure 5 As shown in Figure a, in the above-mentioned components of the electronic device 100, there is a plane parallel to the xy plane; along the z-axis direction (from left to right in the figure), the screen 101, the middle frame 102, the magnetic conductive unit 302, the coil 301, the graphite layer 303, the battery 104 and the back shell 103 can be arranged in sequence.

[0105] Figure 5 Figure b in the diagram more intuitively illustrates the stacked structure between multiple devices, as shown in the example of electronic device 100. Figure 1 Taking the arrangement shown in Figure a as an example, the electronic device can be arranged from bottom to top as follows: screen 101, middle frame 102, magnetic conductive unit 302, coil 301, graphite layer 303, battery 104 and back cover 103.

[0106] In this way, the battery heating device can be placed close to the battery, so that the alternating magnetic field generated by the coil can act on the aluminum-plastic film of the battery, thereby raising the battery temperature by generating eddy current losses.

[0107] It is understood that the second part 1022 of the middle frame 102 can be a battery compartment, which can be a device for storing and managing batteries. The battery 104 can be placed in the second part 1022 of the middle frame to improve the stability of the battery 104 in the electronic device 100. In the first implementation, a battery heating device can be provided between the battery compartment of the middle frame 102 and the battery 104.

[0108] To improve the stability and reliability of battery 104, this application provides another structural schematic diagram of electronic device 100. In this application embodiment, the battery heating device can be placed between the back cover 103 and the battery 104, instead of between the middle frame 102 and the battery 104, so as to increase the fit between the battery 104 and the second part 1022 of the middle frame 102.

[0109] For example, this application provides a schematic diagram of the structure of another electronic device 100, as shown in the figure. Figure 6 As shown:

[0110] Electronic device 100 may include a screen 101, a mid-frame 102, a battery 104, and a back cover 103; the mid-frame 102 may be located on the side of the screen 101 facing the battery 104, and the battery 104 may be located on the side of the back cover 103 facing the mid-frame 102; the positional relationship of the screen 101, mid-frame 102, battery 103, and back cover 103 may be as follows: Figure 6 As shown in Figure a.

[0111] In the second implementation, the battery heating device can be disposed between the battery 104 and the back cover 103. The battery heating device may include a coil 301, a magnetically conductive unit 302, and a graphite layer 303. Specifically, the magnetically conductive unit 302 may be located on the side of the back cover 103 facing the battery 104; the coil 301 may be located on the side of the magnetically conductive unit 302 facing the battery 104; and the graphite layer 303 may be located on the side of the coil 301 facing the battery 104.

[0112] In other words, referencing Figure 6 As shown in Figure a, in any component of the electronic device 100, there exists a plane parallel to the xy plane; along the z-axis direction (from left to right in the figure), a screen 101, a middle frame 102, a battery 104, a graphite layer 303, a coil 301, a magnetic conductive unit 302, and a back cover 103 can be arranged sequentially.

[0113] Figure 6 Figure b in the diagram more intuitively illustrates the stacked structure between multiple devices, as shown in the example of electronic device 100. Figure 1 Taking the arrangement shown in Figure a as an example, the electronic device can be arranged from bottom to top as follows: screen 101, middle frame 102, battery 104, graphite layer 303, coil 301, magnetic conductive unit 302 and back shell 103.

[0114] In this way, the battery heating device can be placed close to the battery, so that the alternating magnetic field generated by the coil can act on the aluminum-plastic film of the battery, thereby raising the battery temperature by generating eddy current losses.

[0115] In addition, to improve the battery's heating rate, multiple battery heating devices may be provided in the electronic device in this embodiment. Figure 7 This application provides a schematic diagram of the structure of another electronic device 100, as shown in the embodiment of the present application. Figure 7 As shown:

[0116] Electronic device 100 may include a screen 101, a mid-frame 102, a battery 104, and a back cover 103; the mid-frame 102 may be located on the side of the screen 101 facing the battery 104, and the battery 104 may be located on the side of the back cover 103 facing the mid-frame 102; the positional relationship of the screen 101, mid-frame 102, battery 103, and back cover 103 may be as follows: Figure 7 As shown in Figure a.

[0117] In the third implementation, the electronic device may be equipped with two battery heating devices, such as a first battery heating device and a second battery heating device. The first battery heating device may be disposed between the battery 104 and the back cover 103, and the second battery heating device may be disposed between the battery 104 and the middle frame 102. The first battery heating device may include a coil 301, a magnetically conductive unit 302, and a graphite layer 303; the second battery heating device may include a coil 301, a magnetically conductive unit 302, and a graphite layer 303.

[0118] The magnetic conductive unit 302 can be located on the side of the back cover 103 facing the battery 104; the coil 301 can be located on the side of the magnetic conductive unit 302 facing the battery 104; and the graphite layer 303 can be located on the side of the coil 301 facing the battery 104. The magnetic conductive unit 702 can be located on the side of the middle frame 102 facing the battery 104; the coil 701 can be located on the side of the magnetic conductive unit 702 facing the battery 104; and the graphite layer 703 can be located on the side of the coil 701 facing the battery 104.

[0119] In other words, referencing Figure 7 As shown in Figure a, in the structure of the electronic device 100, each of the above-mentioned components has a plane parallel to the xy plane; along the z-axis direction (from left to right in the figure), the screen 101, the middle frame 102, the magnetic conductive unit 702, the coil 701, the graphite layer 703, the battery 104, the graphite layer 303, the coil 301, the magnetic conductive unit 302, and the back shell 103 can be arranged in sequence.

[0120] Figure 7 Figure b in the diagram more intuitively illustrates the stacked structure between multiple devices, as shown in the example of electronic device 100. Figure 1 Taking the arrangement shown in Figure a as an example, the electronic device can be arranged from bottom to top as follows: screen 101, middle frame 102, magnetic conductive unit 702, coil 701, graphite layer 703, battery 104, graphite layer 303, coil 301, magnetic conductive unit 302 and back cover 103.

[0121] In this way, the battery heating device can be placed close to the battery, so that the alternating magnetic field generated by the coil can act on the aluminum-plastic film of the battery, thereby raising the battery temperature by generating eddy current losses.

[0122] Optionally, the battery heating device of any of the three types of electronic devices described above may not include the graphite layer and / or the magnetic conductive unit. For example, in the first implementation, the electronic device may not include the graphite layer 303; the electronic device may also not include the magnetic conductive unit 302; or, the electronic device may not include both the magnetic conductive unit 302 and the graphite layer 303. Similarly, in the second implementation, the electronic device may not include the graphite layer 303 and / or the magnetic conductive unit 302. In the third implementation, the electronic device may not include the magnetic conductive unit 302, the graphite layer 303, the magnetic conductive unit 702, and / or the magnetic conductive unit 703. This application does not impose any limitations on these aspects.

[0123] In some embodiments, the electronic device may not support wireless charging. In such cases, the electronic device may not be able to directly reuse the ability of the wireless charging chip to convert DC signals to AC signals. To address this type of electronic device, embodiments of this application provide an electronic device capable of heating a battery. The specific structure of this electronic device is as follows... Figure 8 As shown:

[0124] The electronic device may include a power supply module 801, a control module 802, a switch selection module 803, an inverter module 804, and a coil 301. The power supply module provides a DC signal; the switch selection module 803 may have an off state and an on state. When the switch selection module 803 is on, the electronic device can heat the battery based on an alternating magnetic field; when the switch selection module 803 is off, the electronic device does not perform the battery heating process. The inverter module 804 converts the DC signal into an AC signal; the coil 301 receives the AC signal and generates an electromagnetic signal.

[0125] The control module 802 can be used to control the power supply module 801, the switch selection module 803, and / or the inverter module 804. Further, the control module 802 can specifically be used to control the output type of the DC signal of the power supply module 801; the control module 802 can specifically be used to control the off or on state of the switch selection module 803; and / or, the control module 802 can specifically be used to control the direction of the AC signal of the inverter module 804.

[0126] In this embodiment, the power module 801 may include a battery 104 and an external power supply. The battery 104 provides battery voltage (VBAT) to the electronic device; the external power supply provides external charging voltage (also known as voltage bus, or simply VBUS) to the electronic device.

[0127] Understandably, users can use electronic devices in low-temperature environments when the devices are not charging. In this case, the electronic devices can power the battery heating device using their own electrical energy, and the DC signal of the power module 801 can originate from the battery 104. Furthermore, users can also use electronic devices in low-temperature environments when the devices are charging. In this case, the electronic devices can power the battery heating device using electrical energy from an external power source, and the DC signal of the power module 801 can originate from the external power source.

[0128] It should be noted that since the electronic device does not support wireless charging, the charging state of the electronic device in this embodiment can be: the electronic device is in a wired charging state; for example, the electronic device can be connected to an external power source via a USB interface and an adapter.

[0129] Optionally, to simplify the logic control flow of the electronic equipment during battery heating, the control module may not control the power supply module 801 and / or the inverter module 804. For example, the power supply module 801 may adaptively switch between VBAT and VBUS power supplies, and / or the inverter module 804 may adaptively switch the direction of the AC signal. This will be described later in the embodiments of this application, and will not be elaborated upon here.

[0130] In this embodiment, since the electronic device does not support wireless charging, it cannot obtain the AC signal required for the coil 301 to generate the alternating magnetic field. Therefore, in this embodiment, the electronic device may be equipped with an inverter module 804 to provide the AC signal to the coil 301.

[0131] The following is combined with Figure 9 and Figure 10 The battery heating circuit is explained using two different inverter modules.

[0132] Figure 9 This application illustrates a battery heating circuit according to an embodiment of the present application, such as... Figure 9 As shown: The battery heating circuit includes a power supply module 801, a control module 802, a switch selection module 803, an inverter module 804, and a coil 301.

[0133] For example, the control module 802 can control the power module 801 to output VBUS or VBAT. For instance, when the electronic device is detected to be in an uncharged state, the control module 802 can control the power module 801 to output VBAT, in which case the DC signal source is the battery 104; when the electronic device is detected to be in a charging state, the control module 802 can control the power module 801 to output VBUS, in which case the DC signal source is an external power source.

[0134] The control process can be referenced. Figure 9The power module 801 includes switching units Q1 and Q2. When the electronic device is detected to be charging, the control module 802 controls switching unit Q1 to turn on and switching unit Q2 to turn off, causing the power module 801 to output VBUS. When the electronic device is detected to be not charging, the control module 802 controls switching unit Q1 to turn off and switching unit Q2 to turn on, causing the power module 801 to output VBAT.

[0135] The switch selection module 803 may include a switch unit Q3. The control terminal of the switch unit Q3 is connected to the control module 802. The first terminal of the switch unit Q3 is connected to the output terminal of the power module 801 (e.g., point B). The second terminal of the switch unit Q3 is connected to the input terminal of the inverter module 804 (e.g., point A).

[0136] In one scenario, when the battery temperature is less than or equal to a first preset temperature, the control module 802 controls the switch unit Q3 to operate in the saturation region, causing the switch selection module 803 to switch from an off state to an on state to heat the battery. In another scenario, when the battery temperature is greater than the first preset temperature, the control module 802 controls the switch unit Q3 to operate in the cutoff region, causing the switch selection module 803 to remain in the off state, so as not to heat the battery in non-low temperature environments. In yet another scenario, when the battery temperature is greater than a second preset temperature, the control module 802 controls the switch unit Q3 to operate in the cutoff region, causing the switch selection module 803 to switch from an on state to an off state, so as to stop heating the battery after it reaches the second preset temperature; wherein, the first preset temperature is less than the second preset temperature.

[0137] The above control logic can be understood as follows: When the switch selection module 803 is in the off state, the temperature threshold used to switch the state of the switch selection module can be a first preset temperature; when the battery temperature drops to the first preset temperature, the control module 802 controls the switch selection module 803 to turn on. When the switch selection module 803 is in the on state, the temperature threshold used to switch the state of the switch selection module can be a second preset temperature; when the battery temperature rises to the second preset temperature, the control module 802 controls the switch selection module 803 to turn off.

[0138] It should be noted that the switching unit Q3 can be a MOS transistor or other switching device. For example, the switching element Q3 can be a PMOS transistor. Specifically, the control terminal of the switching element Q3 refers to its gate, its first terminal refers to its source, and its second terminal refers to its drain. The switching element Q3 can also be an NMOS transistor. Specifically, the control terminal of the switching element Q3 refers to its gate, its first terminal refers to its source, and its second terminal refers to its drain.

[0139] In one possible implementation, the inverter module 804 can be as follows: Figure 9 As shown in the large dashed box, the inverter module 804 may include switching unit Q4, switching unit Q5, switching unit Q6 and switching unit Q7.

[0140] Taking the inverter module 804, which includes a full-bridge inverter circuit, as an example, the inverter module 804 may include switch units Q4, Q5, Q6, and Q7. The control terminals of these switch units are all connected to the control module 802. The first terminal of switch unit Q4 is connected to the second terminal of switch unit Q5, and the second terminal of switch unit Q4 is connected to the output terminal of switch selection module 803 and the second terminal of switch unit Q6, respectively. The first terminal of switch unit Q5 is connected to the output terminal of switch selection module 803 and the first terminal of switch unit Q7, respectively. The first terminal of switch unit Q6 is connected to the second terminal of switch unit Q7. Furthermore, the first terminal of switch unit Q4 and the second terminal of switch unit Q5 are both connected to the first terminal of coil 301, and the first terminal of switch unit Q6 and the second terminal of switch unit Q7 are both connected to the second terminal of coil 301.

[0141] The control module 802 can control the on and off states of switch units Q4, Q5, Q6 and Q7; wherein the switching states of switch units Q4 and Q7 change synchronously, and the switching states of switch units Q5 and Q6 change synchronously.

[0142] It is understood that the principle by which the control module 802 controls the switching units Q4, Q5, Q6 and Q7 to turn on and off can be referred to the turning on and off process of the switching unit Q3, and will not be repeated in this embodiment.

[0143] Specifically, the control module 802 can adjust the switching state of the switching units via control signals. At the first time point, the control module 802 can control switching units Q5 and Q6 to be in the off state, and control switching units Q4 and Q7 to be in the on state. In this case, the DC signal provided by the power supply 801 reaches point A after passing through switching unit Q3. Subsequently, the DC signal can pass through switching unit Q4, coil 301, capacitor C1, and switching unit Q7 in sequence. Capacitor C1 and coil 301 can adjust the resonant frequency, and the electrical signal received by coil 301 increases from small to large and then decreases.

[0144] At the second time point, control module 802 can control switch units Q4 and Q7 to be in the off state, and control switch units Q5 and Q6 to be in the on state. In this case, the DC signal provided by power supply 801 reaches point A after passing through switch unit Q3. Subsequently, the DC signal can pass through switch unit Q6, capacitor C1, coil 301, and switch unit Q5 in sequence. Capacitor C1 and coil 301 can adjust the resonant frequency. The electrical signal received by coil 301 increases from small to large, and then decreases from large to small.

[0145] The control module 802 controls the periodic switching on and off of switch units Q4, Q5, Q6, and Q7, causing the electrical signal to periodically commutate and generate an alternating current signal. Coil 301 can receive the alternating current signal and generate an electromagnetic signal.

[0146] Thus, the electronic device can control the coil 301 to generate an electromagnetic signal through the above circuit, so that the aluminum metal in the battery can sense the electromagnetic signal and generate an eddy current heating effect to heat the battery.

[0147] It should be noted that switching units Q3-Q2 and Q3 can be any controllable component or device with switching function, such as semiconductor switches, relays, or optocouplers, capable of path switching and on / off control. Semiconductor switches can be, for example, metal-oxide-semiconductor (MOS) transistors or bipolar transistors. When the switching unit is a MOS transistor, it can be an NMOS transistor or a PMOS transistor. When the switching unit is a bipolar transistor, it can be a PNP transistor or an NPN transistor; this embodiment does not impose any limitations on these aspects.

[0148] Understandable Figure 9 The inverter module 804 shown requires the cooperation of the control module 802 to convert DC signals into AC signals. Based on this, Figure 10 A simplified externally controlled battery heating circuit is provided, such as... Figure 10 As shown:

[0149] exist Figure 10 In Figure a, the battery heating circuit includes a power supply module 801, a control module 802, a switch selection module 803, an inverter module 804, and a coil 301. The power supply module 801 is connected to the switch selection module 803, the switch selection module 803 is connected to the inverter module 804, and the inverter module 804 is connected to the coil 301.

[0150] For example, the power module 801 may include a VBUS power supply, a VBAT power supply, diode D1, and diode D2; wherein, the first terminal of diode D1 is connected to the VBUS power supply, and the second terminal of diode D1 is connected to the switch selection module 803; the first terminal of diode D2 is connected to the VBAT power supply, and the second terminal of diode D2 is connected to the switch selection module 803. The first terminal of diode D1 can be the anode, and the second terminal of diode D1 can be the cathode; the first terminal of diode D2 can be the anode, and the second terminal of diode D2 can be the cathode.

[0151] In one scenario, when the electronic device is heating the battery, the battery is in an uncharged state. VBUS is zero, and the voltage across the first terminal of diode D1 is zero. The battery has remaining charge, so VBAT is greater than VBUS. The voltage across the first terminal of diode D2 is greater than the forward voltage of diode D2, causing diode D2 to conduct forward, making the voltage across the second terminal of diode D2 (e.g., the voltage at point B) equal to VBAT. For diode D1, the voltage across the first terminal of diode D1 is less than the voltage across the second terminal of diode D1 (e.g., the voltage at point B), causing diode D1 to be cut off. At this time, the power module 801 automatically outputs VBAT.

[0152] In another scenario, the battery is in a charging state while the electronic device is heating it. VBUS is not zero. In practical scenarios, when the electronic device is undergoing wired charging, the VBUS voltage is higher than the VBAT voltage to allow the external power supply to power the battery. The voltage at the first terminal of diode D1 is greater than the forward conduction voltage of diode D1, so diode D1 is forward-biased. The voltage at the second terminal of diode D1 can be VBUS, and the voltage at point B is equal to VBUS. However, since VBUS > VBAT, the voltage at the first terminal of diode D2 (VBAT) is less than the voltage at the second terminal of diode D2 (e.g., the voltage at point B, VBUS), causing diode D2 to be cut off. At this time, the power module 801 automatically outputs VBUS.

[0153] In this way, the power module 801 can automatically adjust its output voltage according to the magnitude of the two voltages, thereby reducing external control.

[0154] After the power module 801 outputs either VBAT or VBUS DC signal, the DC signal can be input to the inverter module 804 through the on-state switch selection module 803, so that the inverter module 804 converts the DC signal into an AC signal and provides it to the coil to generate an electromagnetic signal.

[0155] During this process, the conduction procedure of the switch selection module 803 can be referenced. Figure 9 The relevant descriptions in the illustrated embodiments are omitted here.

[0156] In this process, to simplify the external control of the inverter module 804, the inverter module 804 can, for example... Figure 10 The large dashed box in figure a is shown in the image.

[0157] For example, the inverter module 804 may include resistors R1 and R2, inductors L1 and L2, diodes D3 and D4, switching unit Q8 and Q9, and capacitor C2.

[0158] Taking the example where the conduction time of switch unit Q8 is shorter than that of switch unit Q9, inductors L1 and L2 are used to store and release electrical energy. Resistor R1 can be used to control the voltage and / or current input to the control terminal of switch unit Q8 to prevent damage to the device due to excessive voltage and / or current; resistor R2 can be used to adjust the voltage and / or current input to the control terminal of switch unit Q9 to prevent damage to the device due to excessive voltage and / or current. Switch units Q8 and Q9 can be used to adjust the direction of the AC signal input to coil 301. Diode D3 can be used to set the voltage input to the control terminal of switch unit Q9 to zero, thereby turning off switch unit Q9. Diode D4 can be used to set the voltage input to the control terminal of switch unit Q8 to zero, thereby turning off switch unit Q8. Capacitor C2 is used to resonate with coil 301.

[0159] Specifically, the input terminal of inductor L1 is connected to the output terminal of switch selection module 803, and the output terminal of inductor L1 is connected to the second terminal of switch unit Q8, the first terminal of capacitor C2, and the first terminal of coil 301. The input terminal of inductor L2 is connected to the output terminal of switch selection module 803, and the output terminal of inductor L2 is connected to the second terminal of switch unit Q9, the second terminal of capacitor C2, and the second terminal of coil 301. The input terminal of resistor R1 is connected to the output terminal of switch selection module 803, and the output terminal of resistor R1 is connected to the control terminal of switch unit Q8. The input terminal of resistor R2 is connected to the output terminal of switch selection module 803, and the output terminal of resistor R2 is connected to the control terminal of switch unit Q9. The first terminal of switch unit Q8 is connected to the first terminal of switch unit Q9, and both the first terminals of switch unit Q8 and switch unit Q9 are connected to ground. The first terminal of diode D3 is connected to the output terminal of resistor R2, and the second terminal of diode D3 is connected to the second terminal of switch unit Q8. The first terminal of diode D4 is connected to the output terminal of resistor R1, and the second terminal of diode D4 is connected to the second terminal of switching unit Q9.

[0160] It should be noted that, in this embodiment, the first terminal of diode D3 can be the anode of diode D3, and the second terminal of diode D3 can be the cathode of diode D3. The first terminal of diode D4 can be the anode of diode D4, and the second terminal of diode D4 can be the cathode of diode D4. Switching units Q8 and Q9 can both be implemented using NMOS transistors with parasitic diodes. The control terminal of switching unit Q8 can be the gate of switching unit Q8, the first terminal of switching unit Q8 can be the source of switching unit Q8, and the second terminal of switching unit Q8 can be the drain of switching unit Q8; the control terminal of switching unit Q9 can be the gate of switching unit Q9, the first terminal of switching unit Q9 can be the source of switching unit Q9, and the second terminal of switching unit Q9 can be the drain of switching unit Q9. The first terminal of capacitor C2 can be any terminal of capacitor C2, and the second terminal of capacitor C2 is the other terminal of capacitor C2; the first terminal of coil 301 can be any terminal of coil 301, and the second terminal of coil 301 is the other terminal of coil 301.

[0161] The working principle of the above structure in converting DC signals into AC signals will be explained in detail below.

[0162] Taking the output VBAT of power module 801 as an example, when control module 802 controls switch selection module 803 to conduct, the voltage at point A is VBAT. Inductors L1 and L2, resistors R1 and R2 are connected to point A respectively; the voltage at the first terminal of inductor L1 is VBAT, and the voltage at the first terminal of inductor L2 is VBAT; power module 801 begins charging inductors L1 and L2 respectively. Simultaneously, a DC signal passes through point A and resistor R1, and is input to the control terminal of switch unit Q8; and a DC signal passes through point A and resistor R2, and is input to the control terminal of switch unit Q9.

[0163] At point C (the connection point of resistor R1, switch Q8, and diode D4), the voltage is less than VBAT, and the voltage at point C is greater than the forward voltage of switch Q8 (e.g., 3V). At point D (the connection point of resistor R2, switch Q9, and diode D3), the voltage is less than VBAT, and the voltage at point D is greater than the forward voltage of switch Q8 (e.g., 3V). The electronic device can then attempt to turn on switches Q8 and Q9. Since the on-time of switch Q8 is shorter than that of switch Q9, switch Q8 turns on first.

[0164] After switch unit Q8 is turned on, point E (the connection point of inductor L1, diode D3, and inductor L1) is grounded. The voltage at the second terminal of diode D3 is zero, causing the voltage at the first terminal of diode D3 to drop to the voltage drop across diode D3 (e.g., 0.7V). At this time, the voltage at the control terminal of switch unit Q9 (voltage at point D), for example 0.7V, is less than the turn-on voltage of switch unit Q9, so switch unit Q9 cannot be turned on, resulting in switch unit Q9 being in the off state. Thus, switch unit Q8 is in the on state, and switch unit Q9 is in the off state.

[0165] After switch unit Q8 is turned on and switch unit Q9 is turned off, the DC signal reaches point F (the connection point of inductor L2, capacitor C2, and coil 301) through inductor L2. The voltage at point F is not zero, and point G (the connection point of inductor L1, capacitor C2, and coil 301) is connected to the ground terminal, so the voltage at point G is zero. At this time, current flows from the second terminal of capacitor C2 to the first terminal of capacitor C2 (i.e., from point F to point G); current flows from the second terminal of coil 301 to the first terminal of coil 301. During this process, coil 301 and capacitor C2 can resonate during the positive half-cycle (which can be understood as the positive half-cycle of a sine wave). The voltage at point G gradually increases, and the voltage at point F gradually decreases. When the amplitude of the resonant signal passes through point 0, the amplitude of the resonant signal changes, the voltage at point G becomes greater than the voltage at point F, and the voltage at point F becomes zero.

[0166] At this point, after the voltage at point F is 0, the voltage at point H (the connection point of switch unit Q9, diode D4, and inductor L2) is also 0. The voltage at point C drops to the voltage drop across diode D4 (e.g., 0.7V). Since the voltage at point C is less than the turn-on voltage of switch unit Q8, switch unit Q8 switches to the off state. Simultaneously, during the resonance process, the voltage at point G gradually increases, and the voltage at point E also gradually increases. The voltage at point D can exceed the turn-on voltage of switch unit Q9, causing switch unit Q9 to switch to the on state. Thus, switch unit Q8 is in the off state, and switch unit Q9 is in the on state.

[0167] After switch Q9 is turned on and switch Q8 is turned off, the DC signal reaches point G through inductor L1. The voltage at point G is not zero, and point F is connected to the ground terminal, so its voltage is zero. At this time, current flows from the first terminal of capacitor C2 to the second terminal of capacitor C2 (i.e., from point G to point F); current also flows from the first terminal of coil 301 to the second terminal of coil 301. During this process, coil 301 and capacitor C2 can resonate during the negative half-cycle (which can be understood as the negative half-cycle of a sine wave).

[0168] In this way, the inverter module 804 can convert a DC signal into a periodically changing AC signal by switching the switching units Q8 and Q9 on and off. The electronic device can control the coil 301 to generate an electromagnetic signal through the above circuit, causing the aluminum metal in the battery to induce the electromagnetic signal and generate an eddy current heating effect to heat the battery. Furthermore, this battery heating circuit reduces the external control required by the control module 802 for the power module 801 and / or the inverter module 804.

[0169] For example, this application also provides a schematic diagram of another inverter module structure, such as... Figure 10 As shown in Figure b:

[0170] exist Figure 10 Based on the inverter module 804 shown in Figure a, the inverter module 804 may also include diode D5, diode D6, resistor R3 and resistor R4.

[0171] Specifically, the first terminal of diode D5 is connected to the first terminal of resistor R3, the first terminal of switching unit Q8, and the first terminal of switching unit Q9; the second terminal of diode D5 is connected to the second terminal of resistor R3, the output terminal of resistor R1, and the control terminal of switching unit Q8. The first terminal of diode D6 is connected to the first terminal of resistor R4, the first terminal of switching unit Q8, and the first terminal of switching unit Q9; the second terminal of diode D6 is connected to the second terminal of resistor R4, the output terminal of resistor R2, and the control terminal of switching unit Q9.

[0172] Specifically, diodes D5 and D6 can both be Zener diodes. Resistor R3 and diode D5 can be used to stabilize the voltage at the control terminal of switching unit Q8 to prevent overvoltage from damaging switching unit Q8. Resistor R4 and diode D6 can be used to stabilize the voltage at the control terminal of switching unit Q9 to prevent overvoltage from damaging switching unit Q9.

[0173] It should be noted that the embodiments in this application are only combined with Figure 9 and Figure 10 Two battery heating circuit structures and an inverter module 804 circuit structure are provided. The embodiments of this application can also achieve the function of providing AC signals to the coil 301 based on other inverter circuits, such as a full-bridge inverter circuit, a half-bridge inverter circuit, and variations thereof. The embodiments of this application do not impose any limitations on this.

[0174] In this embodiment, the AC signal output by the inverter module 804 is related to the heat loss from the battery. Within a certain frequency range, the frequency of the AC signal is positively correlated with the heat loss from the battery. Electronic devices can increase the heat loss from the battery and thus increase the battery's heating rate by adjusting the frequency of the AC signal from the inverter module 804.

[0175] This is because the battery experiences eddy current losses P in an alternating magnetic field. e It can satisfy the following formula:

[0176] P e =K e ×B 2 max ×t 2 ×f 2 ×V

[0177] Among them, K e B is the eddy current coefficient of the metal. max Let be the maximum magnetic flux density, t be the metal thickness, f be the frequency of the AC signal, and V be the metal volume. Based on the above formula, it can be seen that the frequency of the AC signal is positively correlated with the battery's heating rate. In this embodiment, the battery heating rate can be increased by adjusting the frequency of the AC signal output by the inverter module 804.

[0178] The above embodiments provide a detailed description of the battery heating device and battery heating circuit provided in this application. The following will be combined with... Figure 11 The battery heating method in the embodiments of this application will be described. For example... Figure 11 As shown:

[0179] Specifically, Figure 11 This document illustrates a schematic flowchart of a battery heating method provided in an embodiment of this application; as shown below. Figure 11 As shown:

[0180] S1101, Electronic devices detect battery status and battery temperature; battery status includes charging status and non-charging status.

[0181] Electronic devices can monitor battery status in real time. For example, an electronic device can obtain battery status through battery broadcasting, which can carry identifiers indicating battery status. These identifiers can include charging and not-charging identifiers; for example, the charging identifier could be BATTERY_STATUS_CHARGING; and the not-charging identifier could be BATTERY_STATUS_NOT_CHARGING.

[0182] The control module 802 of the electronic device can select the output type of the power module 801 according to the charging and discharging state of the battery. For example, when the battery status indicator is a charging indicator, the control module 802 controls the power module 801 to output VBUS; when the battery status indicator is a non-charging indicator, the control module 802 controls the power module 801 to output VBAT.

[0183] Electronic devices can also monitor battery temperature in real time. For example, in an electronic device, a thermistor is placed around the battery, and the electronic device can obtain the battery temperature based on the correspondence between the thermistor's resistance value and temperature. Other methods can also be used to detect battery temperature in this application embodiment, and this application embodiment does not limit the methods used.

[0184] In this embodiment, when a low battery temperature is detected, a battery heating device is used to heat the battery. The battery temperature used to determine whether to activate the battery heating function can be a first preset temperature, such as -20°C. This first preset temperature can be set based on the relationship between the power consumed by heating the battery and the power loss at the current temperature; heating the battery can only save power and extend battery life when the power consumed by heating the battery is less than the power loss in a low-temperature environment.

[0185] It is understood that in step S1101, detecting the battery status is an optional step for the electronic device. For example, in the electronic device, the power module 801... Figure 9 In the structure shown, the control module 802 can control the switching states of switch units Q1 and Q2 according to the battery status to output VBAT or VBUS. Meanwhile, the power module 801 in the electronic device... Figure 10 In the case of the structure shown, the power module can adaptively output VBAT or VBUS without the need for control module 802 to control it, and the electronic device can skip the step of detecting the battery status in step S1101.

[0186] S1102. When the battery temperature is less than or equal to the first preset temperature, the electronic device displays a prompt message; the prompt message is used to remind the user that the battery temperature is too low and whether to turn on the battery heating function.

[0187] If the battery temperature is less than or equal to the first preset temperature, it indicates that the current battery temperature is low. In this case, the battery heating function needs to be activated to ensure that the battery can maintain the normal operation of the electronic device.

[0188] When the battery temperature is low, electronic devices can remind the user whether to activate the battery heating function. This notification can be displayed as a pop-up window or as a notification. For example, the notification might say, "Battery temperature is too low. To ensure normal device operation, would you like to activate the battery heating function?"

[0189] Optionally, the prompt message may also include controls for activating the battery heating function (also known as confirmation controls, confirmation controls, activation controls, etc.) and controls for deactivating the battery heating function (also known as deactivation controls, etc.). Users can choose whether to activate the battery heating function according to their own needs.

[0190] Optionally, before displaying the prompt message, the device may also detect running applications; displaying the prompt message may include: the device may display a prompt message when the application load exceeds a load threshold.

[0191] Understandably, when an electronic device has its screen on and is running applications, the battery consumes a significant amount of power. The device needs to heat the battery to offset the power consumption caused by low temperatures, thus improving its battery life in cold environments. For example, if a user is taking a photo in a cold environment and the camera app is detected, the device can display the aforementioned message to raise the battery temperature and extend the photo-taking time.

[0192] Optionally, the electronic device may not execute step S1102. For example, if the battery temperature is less than or equal to a first preset temperature, the electronic device may automatically activate the battery heating function without requiring the user to select whether to activate the battery heating function. That is, after step S1101, the electronic device may execute the step of controlling the switch selection module 803 to be turned on.

[0193] S1103. Upon receiving an operation to activate the battery heating function, the electronic device control switch selection module 803 is turned on in response to the operation.

[0194] The operation to activate the battery heating function can be, for example, a selection operation of a control for activating the battery heating function. After determining that the conditions for activating the battery heating function are met, the electronic device can proceed with the battery heating process.

[0195] In some embodiments, the control module 802 may be a system-on-chip (SOC), a module or chip with specific logic judgment capabilities, etc., and the switching unit Q3 can be controlled by the control module 802 to turn on and off. For example, the control module 802 may include a GPIO interface. The GPIO interface can output high and low levels, using a high level to control the switching unit Q3 to turn on and a low level to control the switching unit Q3 to turn off; or, using a low level to control the switching unit Q3 to turn on and a high level to control the switching unit Q3 to turn off. This application does not limit this aspect.

[0196] S1104, Electronic device heats battery based on alternating magnetic field of coil 301.

[0197] The electronic device heats the battery based on the alternating magnetic field of coil 301, specifically including:

[0198] When the battery 104 is charging and the switch selection module 803 is in the ON state, the power module 801 inputs a first DC signal to the inverter module 804 via the switch selection module 803. The inverter module 803 converts the first DC signal into a first AC signal and transmits the first AC signal to the coil 301. The coil 301 receives the first AC signal and generates a first electromagnetic signal. The battery 104 senses the first electromagnetic signal and generates eddy current losses to heat the battery 104. The first DC signal can be the DC signal when the power module 801 outputs VBUS.

[0199] Alternatively, when battery 104 is not charged and switch selection module 803 is in the ON state, power module 801 inputs a second DC signal to inverter module 804 via switch selection module 803; inverter module 803 converts the second DC signal into a second AC signal and transmits the second AC signal to coil 301; coil 301 receives the second AC signal and generates a second electromagnetic signal; battery 104 senses the second electromagnetic signal and generates eddy current losses to heat battery 104. The first DC signal is different from the second DC signal; the second DC signal can be the DC signal when power module 801 outputs VBAT.

[0200] S1105. When the battery temperature is greater than the second preset temperature or the heating time is greater than the preset duration, the electronic device control switch selection module is turned off to stop heating the battery.

[0201] The second preset temperature can be a temperature threshold used to determine whether to turn off the battery heating function, and the second preset temperature is greater than or equal to the first preset temperature. The preset duration can be a heating time threshold used to determine whether to turn off the battery heating function.

[0202] Understandably, once the battery temperature rises to a certain level, the electronic device shuts off the battery heating function to reduce problems caused by overheating, such as damage to the battery and related components. The second preset temperature can also be set based on the relationship between the amount of electricity consumed by heating the battery and the amount of electricity lost at the current temperature.

[0203] In addition, to improve the safety of the battery heating process, electronic devices can set a preset heating time. After the preset heating time is reached, the electronic device can turn off the battery heating function to reduce the problem of excessive battery temperature caused by software abnormalities or abnormal temperature detection.

[0204] Optionally, in this embodiment, the determination condition for turning off the battery heating function may not include the preset duration. For example, step S1105 may also be: when the battery temperature is greater than a second preset temperature, the electronic device control switch selection module is turned off. This embodiment does not limit this.

[0205] In this way, electronic devices can heat the battery in low-temperature environments, reducing the impact of low temperatures on the battery, extending battery life, and improving the user experience.

[0206] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation portals are provided for users to choose to authorize or refuse.

[0207] To better understand the embodiments of this application, the structure of the electronic device of this application is described below:

[0208] Figure 12A schematic diagram of the structure of electronic device 100 is shown. Electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, antenna 1, antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, a headphone jack 170D, a sensor module 180, buttons 190, a motor 191, an indicator 192, a camera 193, a display screen 194, a subscriber identification module (SIM) card interface 195, and an embedded secure element (eSE) chip 196, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, a barometric pressure sensor 180C, a magnetic sensor 180D, an accelerometer sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, etc.

[0209] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the electronic device 100. In other embodiments of this application, the electronic device 100 may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0210] Processor 110 may include one or more processing units, such as application processors (APs), modem processors, graphics processing units (GPUs), image signal processors (ISPs), controllers, video codecs, digital signal processors (DSPs), baseband processors, and / or neural network processing units (NPUs). These different processing units may be independent devices or integrated into one or more processors.

[0211] The processor 110 may also include a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. This memory can store instructions or data that the processor 110 has just used or that are used repeatedly. If the processor 110 needs to use the instruction or data again, it can retrieve it from the memory. This avoids repeated accesses, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0212] In some embodiments, the processor 110 may include one or more interfaces. Interfaces may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0213] The I2C interface is a bidirectional synchronous serial bus, including a serial data line (SDA) and a serial clock line (SCL). In some embodiments, the processor 110 may include multiple I2C buses. The processor 110 can couple to the touch sensor 180K, charger, flash, camera 193, etc., through different I2C bus interfaces. For example, the processor 110 can couple to the touch sensor 180K through the I2C interface, enabling the processor 110 and the touch sensor 180K to communicate through the I2C bus interface, thereby realizing the touch function of the electronic device 100.

[0214] The GPIO interface is configurable via software. It can be configured as a control signal or a data signal. In some embodiments, the GPIO interface can be used to connect the processor 110 to a camera 193, a display screen 194, a wireless communication module 160, an audio module 170, a sensor module 180, etc. The GPIO interface can also be configured as an I2C interface, an I2S interface, a UART interface, a MIPI interface, etc.

[0215] USB port 130 is a USB standard compliant interface, specifically a Mini USB port, Micro USB port, USB Type-C port, etc. USB port 130 can be used to connect a charger to charge electronic device 100, and can also be used for data transfer between electronic device 100 and peripheral devices. It can also be used to connect headphones for audio playback. This interface can also be used to connect other electronic devices, such as AR devices.

[0216] It is understood that the interface connection relationships between the modules illustrated in the embodiments of this application are illustrative and do not constitute a structural limitation on the electronic device 100. In other embodiments of this application, the electronic device 100 may also adopt different interface connection methods or a combination of multiple interface connection methods as described in the above embodiments.

[0217] The charging management module 140 receives charging input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 receives charging input from the wired charger via the USB interface 130. In some wireless charging embodiments, the charging management module 140 receives wireless charging input via the wireless charging coil of the electronic device 100. While charging the battery 142, the charging management module 140 can also supply power to the electronic device via the power management module 141.

[0218] The power management module 141 connects the battery 142, the charging management module 140, and the processor 110. The power management module 141 receives input from the battery 142 and / or the charging management module 140, providing power to the processor 110, internal memory 121, display screen 194, camera 193, and wireless communication module 160, etc. The power management module 141 can also monitor parameters such as battery capacity, battery cycle count, and battery health status (leakage current, impedance). In some other embodiments, the power management module 141 may also be located within the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be located in the same device.

[0219] Internal memory 121 can be used to store executable program code, including instructions. Internal memory 121 may include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback, image playback, etc.), etc. The data storage area may store data created during the use of electronic device 100 (such as audio data, phonebook, etc.). Furthermore, internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc. Processor 110 executes various functional applications and data processing of electronic device 100 by running instructions stored in internal memory 121 and / or instructions stored in memory located within the processor.

[0220] Temperature sensor 180J is used to detect temperature. In some embodiments, electronic device 100 uses the temperature detected by temperature sensor 180J to execute a temperature handling strategy. For example, when the temperature reported by temperature sensor 180J exceeds a threshold, electronic device 100 performs thermal protection by reducing the performance of a processor located near temperature sensor 180J to reduce power consumption. In other embodiments, when the temperature is below another threshold, electronic device 100 heats battery 142 to prevent abnormal shutdown of electronic device 100 due to low temperature. In still other embodiments, when the temperature is below yet another threshold, electronic device 100 boosts the output voltage of battery 142 to prevent abnormal shutdown due to low temperature.

[0221] The battery heating method provided in this application can be applied to electronic devices with communication functions. The specific device configuration of the electronic device can be referred to the above description, and will not be repeated here.

[0222] This application provides an electronic device, which includes a processor and a memory; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory, causing the electronic device to perform the above-described method.

[0223] This application provides a chip system including at least one processor and a communication interface. The communication interface and the at least one processor are interconnected via a circuit. The at least one processor is used to run computer programs or instructions to execute the above-described method. Its implementation principle and technical effects are similar to the related embodiments described above, and will not be repeated here.

[0224] This application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, it implements the methods described above. The methods described in the above embodiments can be implemented wholly or partially by software, hardware, firmware, or any combination thereof. If implemented in software, the functionality can be stored as one or more instructions or code on or transmitted over the computer-readable medium. The computer-readable medium can include computer storage media and communication media, and can also include any medium that can transfer a computer program from one place to another. The storage medium can be any target medium accessible by a computer.

[0225] In one possible implementation, a computer-readable medium may include RAM, ROM, compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage or other magnetic storage devices, or any other medium targeted to carry or to store the required program code in the form of instructions or data structures, and accessible by a computer. Furthermore, any connection is appropriately referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. As used herein, disks and optical discs include optical discs, laser discs, optical discs, Digital Versatile Discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs optically reproduce data using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0226] This application provides a computer program product, which includes a computer program that, when run, causes the computer to perform the above-described method.

[0227] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processing unit of a general-purpose computer, special-purpose computer, embedded processor, or other programmable device to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing device, generate instructions for implementing the flowchart illustrations. Figure 1One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0228] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of the present invention should be included within the scope of protection of the present invention.

Claims

1. A battery heating device, characterized in that, include: A magnetically conductive unit, located on one side of the battery; A first coil is located on the side of the magnetically conductive unit facing the battery; When the device supports wireless charging, a DC signal is converted into an AC signal by a wireless charging chip to provide an AC signal for the first coil; the first coil is a heating coil, and the cross-sectional area of ​​the wires of the first coil is smaller than that of the wires of the wireless charging coil to increase the impedance of the first coil. In the absence of wireless charging, the device includes an inverter module, which provides an alternating current signal to the first coil when receiving electrical energy input, so that the first coil generates an alternating magnetic field to heat the battery. The battery heating device also includes: A power supply module, which is connected to the inverter module, is used to input a DC signal to the inverter module; The power module includes: the battery; The battery is used to input a first DC signal to the inverter module when the battery temperature is less than or equal to a first preset temperature and the battery is in an uncharged state. The inverter module is specifically used to convert the first DC signal into a first AC signal and input the first AC signal into the first coil; The first coil is specifically used to receive the first alternating current signal and generate a first electromagnetic signal.

2. The battery heating device according to claim 1, characterized in that, The battery heating device further includes the battery; the battery includes a metal outer layer; the metal outer layer is used to sense electromagnetic signals from the first coil and generate eddy current losses to heat the battery.

3. The battery heating device according to claim 1, characterized in that, The power module includes: an external power supply; The external power supply is used to input a second DC signal to the inverter module when the battery temperature is less than or equal to a first preset temperature and the battery is in a charging state. The inverter module is specifically used to convert the second DC signal into a second AC signal and input the second AC signal to the first coil; The first coil is specifically used to receive the second AC signal and generate a second electromagnetic signal.

4. The battery heating device according to any one of claims 1-3, characterized in that, The battery heating device also includes: A first switching unit is located between the power supply module and the inverter module; The control module is configured to control the first switching unit to turn on when the battery temperature is less than or equal to a first preset temperature; and to control the first switching unit to turn off when the battery temperature is greater than a second preset temperature; wherein the first preset temperature is less than the second preset temperature.

5. The battery heating device according to any one of claims 1-3, characterized in that, The power module specifically includes: The second switching unit is connected to both the interface of the external power supply and the first switching unit. A third switching unit is connected to both the battery and the first switching unit. Specifically, when the battery is charging, the second switch unit is in the ON state and the third switch unit is in the OFF state; when the battery is not charging, the second switch unit is in the OFF state and the third switch unit is in the ON state.

6. The battery heating device according to any one of claims 1-3, characterized in that, The power module specifically includes: The first diode is connected to both the interface of the external power supply and the first switching unit. The second diode is connected to both the battery and the first switching unit.

7. The battery heating device according to any one of claims 1-3, characterized in that, The battery heating device also includes: A graphite layer is located on the side of the first coil facing the battery.

8. The battery heating device according to any one of claims 1-3, characterized in that, The battery's outer metal layer includes an aluminum-plastic film.

9. An electronic device, characterized in that, include: A magnetically conductive unit, located on one side of the battery; A first coil is located on the side of the magnetically conductive unit facing the battery; When the electronic device supports wireless charging, a wireless charging chip converts a DC signal into an AC signal to provide an AC signal to the first coil. The first coil is a heating coil, and the cross-sectional area of ​​the wires of the first coil is smaller than that of the wires of the wireless charging coil to increase the impedance of the first coil. When the electronic device does not support wireless charging, the electronic device includes an inverter module, which provides an AC signal to the first coil when receiving electrical energy input, so that the first coil generates an alternating magnetic field to heat the battery. The electronic device also includes: A power supply module, which is connected to the inverter module, is used to input a DC signal to the inverter module; The power module includes: the battery; The battery is used to input a first DC signal to the inverter module when the battery temperature is less than or equal to a first preset temperature and the battery is in an uncharged state. The inverter module is specifically used to convert the first DC signal into a first AC signal and input the first AC signal into the first coil; The first coil is specifically used to receive the first alternating current signal and generate a first electromagnetic signal.

10. The electronic device according to claim 9, characterized in that, The electronic device further includes the battery; the battery includes a metal outer layer; the metal outer layer is used to sense electromagnetic signals from the first coil and generate eddy current losses to heat the battery.

11. The electronic device according to claim 9, characterized in that, The power module includes: an external power supply; The external power supply is used to input a second DC signal to the inverter module when the battery temperature is less than or equal to a first preset temperature and the battery is in a charging state. The inverter module is specifically used to convert the second DC signal into a second AC signal and input the second AC signal to the first coil; The first coil is specifically used to receive the second AC signal and generate a second electromagnetic signal.

12. The electronic device according to any one of claims 9-11, characterized in that, The electronic device also includes: A first switching unit is located between the power supply module and the inverter module; The control module is configured to control the first switching unit to turn on when the battery temperature is less than or equal to a first preset temperature; and to control the first switching unit to turn off when the battery temperature is greater than a second preset temperature; wherein the first preset temperature is less than the second preset temperature.

13. The electronic device according to any one of claims 9-11, characterized in that, The power module specifically includes: The second switching unit is connected to both the interface of the external power supply and the first switching unit. A third switching unit is connected to both the battery and the first switching unit. Specifically, when the battery is charging, the second switch unit is in the ON state and the third switch unit is in the OFF state; when the battery is not charging, the second switch unit is in the OFF state and the third switch unit is in the ON state.

14. The electronic device according to any one of claims 9-11, characterized in that, The power module specifically includes: The first diode is connected to both the interface of the external power supply and the first switching unit. The second diode is connected to both the battery and the first switching unit.

15. The electronic device according to any one of claims 9-11, characterized in that, The electronic device also includes: A graphite layer is located on the side of the first coil facing the battery.

16. The electronic device according to any one of claims 9-11, characterized in that, The battery's outer metal layer includes an aluminum-plastic film.

17. The electronic device according to any one of claims 9-11, characterized in that, The electronic device also includes: A back cover, the back cover being located on the side of the magnetically conductive unit opposite to the first coil; A middle frame, the middle frame being located on the side of the battery opposite to the first coil; A screen located on the side of the mid-frame opposite to the battery.

18. The electronic device according to any one of claims 9-11, characterized in that, The electronic device also includes: A back cover, the back cover being located on the side of the battery opposite to the first coil; The middle frame is located on the side of the magnetic conductive unit opposite to the first coil; The screen is located on the side of the middle frame opposite to the magnetic conductive unit.

19. A battery heating method, characterized in that, The method, applied to any one of claims 9-18, comprises: When the battery temperature is detected to be less than or equal to a first preset temperature, the first coil is controlled to generate an alternating magnetic field to heat the battery. If the battery temperature is detected to be higher than the second preset temperature, the first coil is controlled to stop generating an alternating magnetic field; the second preset temperature is higher than the first preset temperature.

20. The method according to claim 19, characterized in that, Before controlling the first coil to generate an alternating magnetic field to heat the battery, the procedure includes: When the battery is not charged, the control power module inputs a first DC signal to the inverter module; If the battery temperature is detected to be less than or equal to a first preset temperature, the first switching unit is controlled to be turned on. The method of controlling the first coil to generate an alternating magnetic field to heat the battery includes: The inverter module converts the first DC signal into a first AC signal; the first coil generates a first electromagnetic signal based on the first AC signal.

21. The method according to claim 19, characterized in that, Before controlling the first coil to generate an alternating magnetic field to heat the battery, the procedure includes: When the battery is charging, the control power module inputs a second DC signal to the inverter module; If the battery temperature is detected to be less than or equal to a first preset temperature, the first switching unit is controlled to be turned on. The method of controlling the first coil to generate an alternating magnetic field to heat the battery includes: The inverter module converts the second DC signal into a second AC signal; The first coil generates a second electromagnetic signal based on the second AC signal.

22. The method according to any one of claim 20 or 21, characterized in that, Before the control of the first switching unit to turn on, the method further includes: The prompt message is used to prompt the user whether to heat the battery when the battery temperature is less than or equal to the first preset temperature; the prompt message includes a first control. The control of the first switching unit to be turned on includes: In response to a trigger operation on the first control, the first switch unit is turned on.

23. The method according to any one of claims 19-21, characterized in that, The control of the first coil to stop generating the alternating magnetic field includes: The first switch unit is turned off.

24. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 19-23.

25. A chip system, characterized in that, It includes at least one processor and a communication interface, the communication interface and the at least one processor being interconnected via a line, the at least one processor being configured to run a computer program or instructions to perform the method as described in any one of claims 19-23.

26. A computer program product, characterized in that, Includes a computer program that, when run, causes a computer to perform the method as described in any one of claims 19-23.

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