CN114639897A - Heating system, heating control method, and electronic apparatus - Google Patents
Heating system, heating control method, and electronic apparatus Download PDFInfo
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- CN114639897A CN114639897A CN202210386891.3A CN202210386891A CN114639897A CN 114639897 A CN114639897 A CN 114639897A CN 202210386891 A CN202210386891 A CN 202210386891A CN 114639897 A CN114639897 A CN 114639897A
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/623—Portable devices, e.g. mobile telephones, cameras or pacemakers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/637—Control systems characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Automation & Control Theory (AREA)
- Biophysics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a heating system, a heating control method and an electronic device. The heating system is used for electronic equipment, and the electronic equipment comprises a battery and a charging connecting port for charging the battery. The heat generating system includes: the battery temperature monitoring device comprises a temperature acquisition circuit for acquiring the temperature of the battery, a main control circuit for generating a control signal when the temperature of the battery is lower than a preset temperature, a heating drive circuit for generating a drive signal according to the control signal, a heating element for heating the battery under the drive signal and a voltage conversion circuit for connecting the battery and a charging connector. In the first working mode, the voltage conversion circuit is communicated with the battery and used for performing voltage conversion on the electric energy of the battery, and in the second working mode, the voltage conversion circuit is communicated with the charging connecting port and used for performing voltage conversion on the electric energy of the charging connecting port. The heating element generates heat when the temperature of the battery is lower than the preset temperature so as to heat the battery, and therefore the battery can still normally work when the temperature of the working environment is lower.
Description
Technical Field
The present invention relates to the field of consumer electronics, and more particularly, to a heat generation system, a heat generation control method, and an electronic device.
Background
In the related art, the mobile phone battery has a certain requirement on the temperature of the working environment, and when the temperature of the working environment is low, the mobile phone battery is easy to be abnormal, so that the mobile phone cannot work normally.
Disclosure of Invention
Embodiments of the present application relate to a heat generation system, a heat generation control method, and an electronic apparatus.
The heating system of this application embodiment can be used for electronic equipment, electronic equipment includes the battery and charges the connector, the connector that charges is used for doing the battery charges, the heating system includes temperature acquisition circuit, master control circuit, the drive circuit that generates heat, heating element and voltage conversion circuit. The temperature acquisition circuit is used for acquiring the temperature of the battery. The main control circuit is used for generating a control signal when the temperature of the battery is lower than a preset temperature. The heating driving circuit is used for generating a driving signal according to the control signal. The heating element is used for generating heat under the driving signal so as to heat the battery. The voltage conversion circuit is used for being connected with the battery and the charging connector respectively, under a first working mode, the voltage conversion circuit is communicated with the battery and used for carrying out voltage conversion on electric energy of the battery so as to supply power to the temperature acquisition circuit, the main control circuit and the heating driving circuit, and under a second working mode, the voltage conversion circuit is communicated with the charging connector and used for carrying out voltage conversion on the electric energy of the charging connector so as to supply power to the temperature acquisition circuit, the main control circuit and the heating driving circuit.
The heating control method is used for a heating system, the heating system is used for electronic equipment, the electronic equipment comprises a battery and a charging connector, and the charging connector is used for charging the battery. The heating system comprises a temperature acquisition circuit, a master control circuit, a heating driving circuit, a heating element and a voltage conversion circuit. The voltage conversion circuit is used for being connected with the battery and the charging connector respectively, under a first working mode, the voltage conversion circuit is communicated with the battery and used for carrying out voltage conversion on electric energy of the battery so as to supply power to the temperature acquisition circuit, the main control circuit and the heating driving circuit, and under a second working mode, the voltage conversion circuit is communicated with the charging connector and used for carrying out voltage conversion on the electric energy of the charging connector so as to supply power to the temperature acquisition circuit, the main control circuit and the heating driving circuit. The heat generation control method includes: the temperature acquisition circuit acquires the temperature of the battery; the main control circuit generates a control signal when the temperature of the battery is lower than a preset temperature; the heating driving circuit generates a driving signal according to the control signal; the heating element generates heat under the driving signal to heat the battery.
The electronic equipment of this application embodiment includes above-mentioned heating system, battery and the connector that charges, the connector that charges is used for doing the battery charges, the heating system is used for heating the battery.
According to the heating system, the heating control method and the electronic equipment, when the temperature of the battery is lower than the preset temperature, the heating element generates heat to heat the battery, so that the battery can still normally work when the temperature of the working environment is lower, and the electronic equipment can normally work. In addition, the voltage conversion circuit can be powered by the battery in the first working mode, and can be powered by the charging connector in the second working mode, so that even if the battery cannot normally supply power (for example, the electronic equipment is turned off and the battery cannot be activated under the low-temperature condition), the power can be supplied through the charging connector, the temperature acquisition circuit, the main control circuit and the heating driving circuit can normally work to drive the heating element to generate heat, the temperature of the battery is increased, the battery can be activated, and the electronic equipment can be normally turned on and normally work.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a heat generating system according to certain embodiments of the present application;
FIG. 2 is a schematic view of an electronic device of some embodiments of the present application;
FIG. 3 is a schematic diagram of a master control circuit according to some embodiments of the present application;
FIG. 4 is a schematic diagram of a heat generation driver circuit according to some embodiments of the present application;
fig. 5 is a schematic flow chart of a heat generation control method according to some embodiments of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present application and should not be construed as limiting the present application.
The mobile phone battery has certain requirements on the temperature of the working environment, and when the temperature of the working environment is low, the mobile phone battery is easy to be abnormal, so that the mobile phone cannot normally work, even cannot be started and cannot be charged.
In the related art, in the starting state of the mobile phone, the mobile phone runs a high-load task, so that devices such as a CPU (central processing unit), a GPU (graphic processing unit) and the like continuously work at a high frequency, the working current of the mobile phone is increased, and the purpose of increasing the temperature of the mobile phone and a battery in the mobile phone is achieved. When loads such as a CPU (central processing unit), a GPU (graphics processing unit) and the like of the mobile phone are pulled to a high frequency, although the working current of the mobile phone is increased, the temperature of the mobile phone is also increased, the mobile phone is severely jammed and crashed, the user experience is seriously influenced, in addition, the power consumption is greatly increased when the mobile phone works under the condition of a high load, and the service life of the mobile phone is greatly reduced. Meanwhile, the effect of the method is limited, and because the current increment caused by the full-load work of the mobile phone has an upper limit, the current increment cannot be increased without limit, so that the heating effect of the method has an upper limit and the method cannot adapt to various environments.
Referring to fig. 1 and 2, the heat generating system 10 according to the embodiment of the present disclosure may be used in an electronic device 100, where the electronic device 100 includes a battery 30 and a charging connector 50, and the charging connector 50 is used for charging the battery 30. The heating system 10 includes a temperature acquisition circuit 11, a main control circuit 12, a heating driving circuit 13, a heating element 14, and a voltage conversion circuit 15. The temperature acquisition circuit 11 is used for acquiring the temperature of the battery 30. The main control circuit 12 is configured to generate a control signal when the temperature of the battery 30 is less than a preset temperature. The heat generation driving circuit 13 is configured to generate a driving signal according to the control signal. The heating element 14 is used for generating heat under the driving signal to heat the battery 30. The voltage conversion circuit 15 is used for respectively connecting the battery 30 and the charging connection port 50, in a first working mode, the voltage conversion circuit 15 is communicated with the battery 30 and used for performing voltage conversion on electric energy of the battery 30 so as to supply power to the temperature acquisition circuit 11, the main control circuit 12 and the heating driving circuit 13, and in a second working mode, the voltage conversion circuit 15 is communicated with the charging connection port 50 and used for performing voltage conversion on electric energy of the charging connection port 50 so as to supply power to the temperature acquisition circuit 11, the main control circuit 12 and the heating driving circuit 13.
The heating system 10 of the embodiment of the present application, when the temperature of the battery 30 is less than the preset temperature, the heating element 14 generates heat to heat the battery 30, so that when the temperature of the working environment is low, the battery 30 can still work normally, thereby ensuring that the electronic device 100 can work normally. In addition, since the voltage conversion circuit 15 can be powered by the battery 30 in the first operating mode and can be powered by the charging connector 50 in the second operating mode, even when the battery 30 cannot be powered normally (for example, the electronic device 100 is turned off and the battery 30 cannot be activated at low temperature), the power can be supplied through the charging connector 50, so that the temperature acquisition circuit 11, the main control circuit 12 and the heating driving circuit 13 can work normally to drive the heating element 14 to generate heat, thereby increasing the temperature of the battery 30, enabling the battery 30 to be activated, and further enabling the electronic device 100 to be started and work normally.
The electronic device 100 may include a mobile phone, a tablet computer, and the like, and the embodiment of the present application is described by taking the mobile phone as an example.
The charging connector 50 may be a USB charging connector, and an external power source (e.g., a power source converted from a commercial power through a charger, a charger), etc. may charge the battery 30 through the charging connector 50.
The Temperature acquisition circuit 11 may include an NTC (negative Temperature coefficient) thermistor, which operates on the principle that a resistance value changes significantly with Temperature. NTC refers to the phenomenon and materials of thermistors with negative temperature coefficients that decrease exponentially with increasing temperature. The material is a semiconductor ceramic which is prepared by fully mixing, molding, sintering and other processes of two or more than two metal oxides of manganese, copper, silicon, cobalt, iron, nickel, zinc and the like, and can be prepared into a thermistor with a Negative Temperature Coefficient (NTC). The resistivity and material constant of the NTC vary with the material composition ratio, sintering atmosphere, sintering temperature and structural state. In addition, a non-oxide NTC thermistor material typified by silicon carbide, tin selenide, tantalum nitride, or the like can also be used.
Referring to fig. 3, the main control circuit 12 may be a single chip microcomputer control system, and the main control circuit 12 includes, for example, a control chip 122, a crystal oscillator circuit 124, and a reset circuit 126. The control chip 122 may be a single chip, such as stm 32. The main control circuit 12 and the temperature acquisition circuit 11 are in circuit connection, and different connection modes are adopted according to different types of the temperature acquisition circuits. In one embodiment, the temperature acquisition circuit 11 may include analog circuits such as an NTC temperature-sensitive resistor, and the ADC acquisition pin of the main control circuit 12 is connected to the circuit of the NTC temperature-sensitive resistor. In another embodiment, the temperature acquisition circuit 11 may employ a digital sensor, and the main control circuit 12 and the temperature acquisition circuit 11 are connected through a communication protocol (e.g., IIC, etc.).
Referring to fig. 4, the heating driving circuit 13 mainly includes a switching circuit composed of a triode or a field effect transistor, and since the io pin of the main control circuit 12 has a small load capacity, it is impossible to directly drive the heating element, and the heating driving circuit 13 is required to drive. The basic principle of the switching circuit is to control the triode to work in a cut-off region and a saturation region. The heat generation driving circuit 13 is electrically connected to the heat generating element 14, and different connection methods are adopted according to different types of the heat generating element 14.
The heating element 14 may be a heating film, such as a graphene heating film, a silver nanowire heating film, etc., and the temperature of such devices may change according to the input voltage or current signal. In other embodiments, the heating element 14 may be an element capable of generating heat, such as a heating wire or a heating sheet, and is not particularly limited herein.
The voltage conversion circuit 15 mainly boosts or reduces the total input voltage (the input voltage of the battery 30 or the input voltage of the charging connector 50) to the working voltage suitable for each module (the temperature acquisition circuit 11, the main control circuit 12, the heating drive circuit 13, etc.), and provides a stable power supply for other modules. It should be noted that the working voltages of the temperature acquisition circuit 11, the main control circuit 12, and the heating driving circuit 13 may be the same or different, and are not limited herein.
The electric energy converted by the voltage conversion circuit 15 can be indirectly supplied to the heating element 14 through the heating driving circuit 13, that is, after the voltage conversion circuit 15 supplies power to the heating driving circuit 13, the heating driving circuit 13 can drive the heating element 14, and the voltage conversion circuit 15 can no longer supply power to the heating element 14. In other embodiments, the voltage conversion circuit 15 may supply power to the heating element 14.
The input terminal of the voltage conversion circuit 15 is connected to the battery 30 and the charging connector 50, and when the battery 30 cannot provide power for the voltage conversion circuit 15 (for example, the electronic device 100 is turned off and the battery 30 cannot be activated in a low temperature condition), the connection is automatically switched to obtain power from the charging connector 50, and the power is respectively supplied from the battery 30 and the charging connector 50, so that the heat generating system 10 has power supply independent of the battery 50, thereby adapting to the first operation mode and the second operation mode.
When the battery 30 is capable of supplying power, the voltage conversion circuit 15 operates in the first operation mode; when the battery 30 is unable to supply power and the charging connection port 50 has power, the voltage conversion circuit 15 operates in the second operation mode.
In the first operation mode, the battery 30 may be normally activated (at this time, the electronic device 100 may be in an on state or an off state), the battery 30 provides power for the voltage conversion circuit 15, when the temperature of the battery 30 gradually decreases or is about to be lower than the minimum operation temperature of the battery 30, the heating system 10 operates, and the heating element 14 starts to emit heat, so that the battery 30 operates in a suitable temperature environment, and the electronic device 100 is prevented from being turned off due to too low temperature of the battery 30. In the second operation mode, the electronic device 100 may be in a shutdown state due to low ambient temperature, and the battery 30 may not be activated, and at this time, the battery 30 may not be activated even if a charger is inserted, and the battery 30 may not provide power for the voltage converting circuit 15. The heating system 10 detects that the temperature of the battery 30 is lower than a preset temperature, when the battery 30 cannot work normally, the charging connector 50 supplies power to the voltage conversion circuit 15, the voltage conversion circuit 15 performs voltage conversion on the electric energy of the charging connector 50, so as to supply power to the temperature acquisition circuit 11, the main control circuit 12 and the heating driving circuit 13, so that the heating element 14 starts to emit heat, the battery 30 is heated in a low-temperature environment, the temperature of the battery 30 is recovered to the temperature capable of working normally and charging normally, the charging function of the battery 30 is gradually recovered and turned on, and the situation that the battery 30 cannot be charged due to low temperature is avoided.
The voltage conversion circuit 15 may include a voltage regulation chip for boosting or stepping down the input voltage of the battery 30 or the input voltage of the charging connection port 50 to convert the input voltage into a voltage value suitable for the operation of other modules.
The preset temperature can be obtained by calibration in advance, and it can be understood that the preset temperature can be the lowest working temperature of the battery 30 or the preset temperature can be slightly higher than the lowest working temperature of the battery 30, wherein when the preset temperature is slightly higher than the lowest working temperature of the battery 30, the heating element 14 can be controlled to emit heat in advance when the temperature of the battery 30 is about to be lower than the lowest working temperature of the battery 30, so that the battery 30 can work normally.
Referring to fig. 2, in some embodiments, the electronic device 100 includes a motherboard 70 and a processor 90 disposed on the motherboard 70, and the lowest operating temperature of the main control circuit 12 is lower than the lowest operating temperature of the processor 90.
In this way, the main control circuit 12 is disposed independently of the processor 90, the heat generating system 10 has a separate main control module, and the lowest operating temperature of the main control circuit 12 is lower than the lowest operating temperature of the processor 90, so that when the ambient temperature is low, even if the processor 90 of the electronic device 100 cannot normally operate, the main control circuit 12 may still normally operate, and thus the heat generating driving circuit 13 and the heat generating element 14 may be controlled according to the temperature collected by the temperature collecting circuit 11.
The main board 70 may refer to a main circuit board of the electronic device 100, and the processor 90 may be a CPU, a GPU, or the like disposed on the main board 70.
Referring to fig. 1 and fig. 2, in some embodiments, the temperature acquisition circuit 11 is further configured to acquire a temperature of the motherboard 70, the main control circuit 12 is further configured to generate a control signal when the temperature of the motherboard 70 is less than a temperature threshold, and the heating element 14 is further configured to generate heat under the driving signal to heat the motherboard 70.
In this way, the main board 70 can be accurately heated according to the temperature of the main board 70.
Specifically, in order to ensure the normal operation of the electronic device 100, besides the battery 30, the motherboard 70 and devices (such as the processor 90) on the motherboard 70 have certain requirements on the temperature of the operating environment, and when the temperature of the motherboard 70 is lower than the minimum operating temperature, the motherboard 70 and the devices on the motherboard 70 may be abnormal, which may cause various problems. Therefore, the temperature acquisition circuit 11 is also used for acquiring the temperature of the motherboard 70, the main control circuit 12 is also used for generating a control signal when the temperature of the motherboard 70 is less than the temperature threshold, the heating driving circuit 13 can generate a driving signal according to the control signal, so as to drive the heating element 14 to heat, and further heat the motherboard 70, so that the motherboard 70 works in a suitable temperature environment, and the electronic device 100 is prevented from being shut down due to too low temperature of the motherboard 70.
The temperature threshold may be obtained by calibrating in advance, and it can be understood that the temperature threshold may be the lowest working temperature of the motherboard 70 or the temperature threshold may be slightly greater than the lowest working temperature of the motherboard 70, where when the temperature threshold is slightly greater than the lowest working temperature of the motherboard 70, the heating element 14 may be controlled to emit heat in advance when the temperature of the motherboard 70 is about to be lower than the lowest working temperature of the motherboard 70, so that the motherboard 70 may work normally.
In one embodiment, the temperature acquisition circuit 11 may include a plurality of NTC thermistors, which may be respectively disposed on the battery 30 and the motherboard 70 to respectively detect the temperature of the battery 30 and the temperature of the motherboard 70. In addition, the heat generating system 10 may include a plurality of heat generating elements 14, and the plurality of heat generating elements 14 may correspond to respective devices, for example, heat generating films may be disposed on the battery 30 and the main board 70, respectively. The main board 70 and the battery 30 may be controlled independently of each other, and are not particularly limited herein.
In some embodiments, the temperature acquisition circuit 11 is further configured to acquire temperatures of other critical devices (e.g., the processor 90, etc.), the main control circuit 12 is further configured to generate a control signal when the temperatures of the other critical devices are less than a temperature set value, the heat generation driving circuit 13 may generate a driving signal according to the control signal, and the heat generation element 14 is further configured to generate heat under the driving signal to heat the other critical devices.
In some embodiments, the main control circuit 12 is further configured to send the operating status of the heat generating element 14 to the processor 90, so that the processor 90 can control the display screen of the electronic device 100 to send out the prompt message according to the operating status of the heat generating element 14.
In this manner, the user may be prompted to determine whether to transfer the electronic device 100 to a suitable environment based on the prompting information.
Specifically, the main control circuit 12 of the heating system 10 is mainly used for acquiring the acquired temperature from the temperature acquisition circuit 11, then determining a control signal according to the acquired temperature for controlling the heating element 14, because the main control circuit 12 does not control the display screen of the electronic device 100 due to the limitation of the circuit connection mode and the control authority of the main control circuit 12, therefore, after the heating element 14 starts to operate, the main control circuit 12 may send the operating status of the heating element 14 to the processor 90, the main control circuit 12 and the processor 90 may be connected and communicate via a serial port or a bus, the processor 90 may control the display of the electronic device 100 to send a prompt message according to the operating status of the heating element 14, for example, a pop-up window may be used to send a prompt to prompt the user to pay attention to the timely transfer of the electronic device 100 to a suitable location. In one example, the main control circuit 12 may employ a single chip microcomputer program, and the electronic device 100 may employ an android program.
In some embodiments, the main control circuit 12 is configured to determine a detection time interval according to the temperature of the battery 30, the temperature of the battery 30 is in a positive correlation with the detection time interval, and the temperature collecting circuit 11 is configured to re-collect the temperature of the battery 30 after the detection time interval.
Thus, the detection time interval can be set reasonably, and the power consumption can be reduced while the battery 30 can work normally.
Specifically, the main control circuit 12 may determine the next detection time according to the temperature of the battery 30 detected at the current time, where the interval between two detection times is the detection time interval, where the temperature of the battery 30 and the detection time interval have a positive correlation, that is, the higher the temperature of the battery 30 is, the longer the detection time interval is, the lower the temperature of the battery 30 is, and the shorter the detection time interval is. Since the higher the temperature of the battery 30, it means that the temperature of the battery 30 does not substantially fall below the preset temperature in a short time; on the other hand, the lower the temperature of the battery 30, the greater the possibility that the temperature of the battery 30 may drop below the preset temperature in a short time, and therefore, in order to prevent the battery 30 from being inoperable due to a low temperature, it is necessary to detect the temperature of the battery 30 at short detection time intervals. In one embodiment, the detection time interval is 10 seconds when the temperature of the battery 30 is greater than 5 ℃; when the temperature of the battery 30 is greater than or equal to 0 ℃ and less than 5 ℃, the detection time interval is 5 seconds; when the temperature of the battery 30 is greater than or equal to-3 ℃ and less than 0 ℃, the detection time interval is 3 seconds; when the temperature of the battery 30 is greater than or equal to minus 7 ℃ and less than minus 3 ℃, the detection time interval is 2 seconds; the detection time interval is 1 second when the temperature of the battery 30 is less than-7 deg.c. Similarly, the control manner of the main board 70 or other key devices may also be the same as or similar to the control manner of the battery 30, and is not limited in detail herein.
In some embodiments, the main control circuit 12 is configured to generate a plurality of control signals according to the temperature of the battery 30, the heating temperature of the heating element 14 corresponding to each control signal is different, and the temperature of the battery 30 and the heating temperature of the heating element 14 are in a negative correlation relationship.
In this way, corresponding control signals can be generated according to the temperature of the battery 30 to control the heating element 14 to operate at different heating temperatures, so as to ensure that the battery 30 can operate in a proper temperature environment.
Specifically, when the temperature of the battery 30 is lower than the preset temperature, the main control circuit 12 may input the temperature of the battery 30 to a PID (proportion integration differential), the PID obtains the heating temperature of the heating element 14 at this time after being operated, and the main control circuit 12 outputs a control signal to the heating driving circuit 13 according to the heating temperature of the heating element 14, so that the heating element 14 heats the battery 30, and the heating element 14 outputs different heating temperatures according to the received signal.
A PID controller is a controller widely used in industrial process control, wherein P, I, D is shorthand for Proportion (contribution), Integral (Integral), and Differential (Differential), respectively; the proportional, integral, and derivative of the deviation are linearly combined to form a control amount, and the controlled object is controlled by the control amount, which is called a PID algorithm. KP, KI and KD are respectively proportional coefficient, integral coefficient and differential coefficient. The proportionality coefficient KP: the current most basic error of the reaction system is large in coefficient, so that the adjustment can be accelerated, and the error can be reduced, but the stability of the system is reduced by an overlarge proportion, and even the instability of the system is caused. And (4) integrating coefficient KI: the accumulated error of the reaction system can eliminate the steady state error of the system, improve the tolerance, and the integral adjustment can play a role as long as the error exists. Differential coefficient KD: the change rate of the reaction system error has predictability, and the change trend of the deviation can be predicted to generate an advanced control effect. The dynamic performance of the system can be improved. However, the differential has an amplifying effect on the noise, which can reduce the anti-interference performance of the system. Closed-loop control of the temperature of the battery 30 and the heat generation temperature of the heat generating element 14 can be achieved by the PID algorithm.
The lower the temperature of the battery 30 is, the higher the heating temperature of the heating element 14 is, and the greater the heating effect is, and after the temperature rises, the heating temperature of the heating element 14 will gradually decline, and the heating effect will also gradually decline, so as to realize the closed-loop control of the heating element 14.
The temperature of the battery 30 and the heating temperature of the heating element 14 are in a negative correlation relationship, and the main control circuit 12 dynamically adjusts the temperature of the heating element 14 according to the temperature value acquired by the temperature acquisition circuit 11, so that the situation that the battery 30 and the electronic device 100 cannot normally work due to sudden reduction of the temperature of the battery 30 and untimely heating of the heating element 14 can be avoided.
In some embodiments, the control signal is a PWM signal, and the main control circuit 12 is configured to generate a plurality of PWM signals according to the temperature of the battery 30, each PWM signal having a different duty cycle or frequency.
In this way, the generation of PWM (Pulse width modulation) signals with different duty ratios or frequencies can control the heating element 14 to operate at different heating temperatures, thereby ensuring that the battery 30 can operate in a suitable temperature environment.
Specifically, one GPIO port of the control chip 122 of the main control circuit 12 may be connected to a control pin of the heat-generating driving circuit 13 and configured to output PWM signals with different duty ratios or frequencies to the heat-generating driving circuit 13, and the heat-generating driving circuit 13 generates corresponding driving signals according to the PWM signals, so as to drive the heat-generating temperature of the heat-generating element 14 to achieve different heat-generating effects. The adjustment of the frequency of the PWM signal may also be referred to as PFM (Pulse frequency modulation).
In one embodiment, the heating element 14 is a heating film and the temperature of the heating film changes with the input voltage signal. The heating film is driven by adopting a PWM signal, the PWM signal is an analog control mode, and the bias of a base electrode of the transistor or a grid electrode of the MOS tube is modulated according to the change of corresponding load so as to change the conduction time of the transistor or the MOS tube and further change the output. This way the output voltage can be kept constant when the operating conditions change, which is a very efficient technique for controlling an analog circuit using the digital signal of a microprocessor. By varying the frequency or duty cycle of the PWM signal, the equivalent voltage of the signal can be varied, thereby allowing the heating element 14 to emit different temperatures.
Referring to fig. 1 and 2, an electronic device 100 according to an embodiment of the present disclosure includes a heat generating system 10 according to any one of the above embodiments, a battery 30, and a charging connector 50, where the charging connector 50 is used for charging the battery 30, and the heat generating system 10 is used for heating the battery 30.
The electronic device 100 of the embodiment of the present application, the heating element 14 generates heat when the temperature of the battery 30 is less than the preset temperature, so as to heat the battery 30, so that when the temperature of the working environment is lower, the battery 30 can still normally work, thereby ensuring that the electronic device 100 can normally work. In addition, since the voltage conversion circuit 15 can be powered by the battery 30 in the first operating mode and can be powered by the charging connector 50 in the second operating mode, even when the battery 30 cannot be powered normally (for example, the electronic device 100 is turned off and the battery 30 cannot be activated in a low temperature condition), the power can be supplied through the charging connector 50, so that the temperature acquisition circuit 11, the main control circuit 12 and the heating driving circuit 13 can work normally to drive the heating element 14 to generate heat, thereby increasing the temperature of the battery 30, enabling the battery 30 to be activated, and further enabling the electronic device 100 to be turned on normally and work normally.
Referring to fig. 1, 2 and 5, the heat generation control method according to the embodiment of the present application may be applied to the heat generation system 10 according to any one of the above embodiments. The heating system 10 is used for the electronic device 100, the electronic device 100 includes a battery 30 and a charging connector 50, the charging connector 50 is used for charging the battery 30, the heating system 10 includes a temperature acquisition circuit 11, a main control circuit 12, a heating driving circuit 13, a heating element 14 and a voltage conversion circuit 15, the voltage conversion circuit 15 is used for respectively connecting the battery 30 and the charging connector 50, in a first working mode, the voltage conversion circuit 15 is communicated with the battery 30 and is used for performing voltage conversion on electric energy of the battery 30 so as to supply power to the temperature acquisition circuit 11, the main control circuit 12 and the heating driving circuit 13, and in a second working mode, the voltage conversion circuit 15 is communicated with the charging connector 50 and is used for performing voltage conversion on electric energy of the charging connector 50 so as to supply power to the temperature acquisition circuit 11, the main control circuit 12 and the heating driving circuit 13; the heat generation control method includes:
01: the temperature acquisition circuit 11 acquires the temperature of the battery 30;
02: the main control circuit 12 generates a control signal when the temperature of the battery 30 is less than a preset temperature;
03: the heat generation driving circuit 13 generates a driving signal according to the control signal;
04: the heating element 14 generates heat under the driving signal to heat the battery 30.
According to the heating control method of the embodiment of the application, when the temperature of the battery 30 is lower than the preset temperature, the heating element 14 generates heat to heat the battery 30, so that when the temperature of the working environment is lower, the battery 30 can still normally work, and the electronic device 100 can normally work. In addition, since the voltage conversion circuit 15 can be powered by the battery 30 in the first operating mode and can be powered by the charging connector 50 in the second operating mode, even when the battery 30 cannot be powered normally (for example, the electronic device 100 is turned off and the battery 30 cannot be activated at low temperature), the power can be supplied through the charging connector 50, so that the temperature acquisition circuit 11, the main control circuit 12 and the heating driving circuit 13 can work normally to drive the heating element 14 to generate heat, thereby increasing the temperature of the battery 30, enabling the battery 30 to be activated, and further enabling the electronic device 100 to be started and work normally.
In some embodiments, the heat generation control method further includes: the temperature acquisition circuit 11 acquires the temperature of the motherboard 70, the main control circuit 12 generates a control signal when the temperature of the motherboard 70 is less than a temperature threshold, and the heating element 14 generates heat under a driving signal to heat the motherboard 70.
In some embodiments, the heat generation control method further includes: the main control circuit 12 sends the operating state of the heat generating element 14 to the processor 90, so that the processor 90 can control the display screen of the electronic device 100 to send out prompt information according to the operating state of the heat generating element 14.
In some embodiments, the heat generation control method further includes: the main control circuit 12 determines a detection time interval according to the temperature of the battery 30, the temperature of the battery 30 and the detection time interval are in a positive correlation, and the temperature acquisition circuit 11 acquires the temperature of the battery 30 again after the detection time interval.
In certain embodiments, step 02 comprises: the main control circuit 12 is configured to generate a plurality of control signals according to the temperature of the battery 30, where the heating temperatures of the heating elements 14 corresponding to the control signals are different, and the temperature of the battery 30 and the heating temperature of the heating element 14 are in a negative correlation relationship.
In certain embodiments, step 02 comprises: the main control circuit 12 is configured to generate a plurality of PWM signals according to the temperature of the battery 30, and each PWM signal has a different duty ratio or frequency.
The processor may be referred to as a driver board. The driver board may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc.
In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A heating system for an electronic device, the electronic device comprising a battery and a charging connector, the charging connector being configured to charge the battery, the heating system comprising:
the temperature acquisition circuit is used for acquiring the temperature of the battery;
the main control circuit is used for generating a control signal when the temperature of the battery is lower than a preset temperature;
the heating driving circuit is used for generating a driving signal according to the control signal;
a heating element for generating heat under the driving signal to heat the battery;
the voltage conversion circuit is used for being connected with the battery and the charging connector respectively, under a first working mode, the voltage conversion circuit is communicated with the battery and used for carrying out voltage conversion on electric energy of the battery so as to supply power to the temperature acquisition circuit, the main control circuit and the heating driving circuit, and under a second working mode, the voltage conversion circuit is communicated with the charging connector and used for carrying out voltage conversion on the electric energy of the charging connector so as to supply power to the temperature acquisition circuit, the main control circuit and the heating driving circuit.
2. The heat generating system of claim 1, wherein the electronic device comprises a motherboard and a processor disposed on the motherboard, and wherein the minimum operating temperature of the main control circuit is less than the minimum operating temperature of the processor.
3. The heat generation system according to claim 2, wherein the temperature acquisition circuit is further configured to acquire a temperature of the motherboard, the main control circuit is further configured to generate the control signal when the temperature of the motherboard is less than a temperature threshold, and the heating element is further configured to generate heat under the driving signal to heat the motherboard.
4. The heat generation system of claim 2, wherein the master control circuit is further configured to send the operating status of the heat generation element to the processor, so that the processor can control a display screen of the electronic device to send a prompt message according to the operating status of the heat generation element.
5. The heat generation system according to claim 1, wherein the main control circuit is configured to determine a detection time interval according to the temperature of the battery, the temperature of the battery is in a positive correlation with the detection time interval, and the temperature acquisition circuit is configured to re-acquire the temperature of the battery after the detection time interval.
6. The heat generation system according to claim 1, wherein the main control circuit is configured to generate a plurality of control signals according to a temperature of the battery, a heating temperature of a heating element corresponding to each control signal is different, and the temperature of the battery and the heating temperature of the heating element are in a negative correlation relationship.
7. The heat generation system according to claim 6, wherein the control signal is a PWM signal, and the main control circuit is configured to generate a plurality of PWM signals according to the temperature of the battery, each of the PWM signals having a different duty ratio or frequency.
8. The heat generating system of claim 1, wherein the voltage conversion circuit operates in the first mode of operation when the battery is capable of supplying power; when the battery can not supply power and the charging connecting port has electric energy, the voltage conversion circuit works in the second working mode.
9. The heating control method is used for a heating system, and is characterized in that the heating system is used for an electronic device, the electronic device comprises a battery and a charging connector, the charging connector is used for charging the battery, the heating system comprises a temperature acquisition circuit, a main control circuit, a heating driving circuit, a heating element and a voltage conversion circuit, the voltage conversion circuit is used for respectively connecting the battery and the charging connector, in a first working mode, the voltage conversion circuit is communicated with the battery and is used for performing voltage conversion on electric energy of the battery so as to supply power to the temperature acquisition circuit, the main control circuit and the heating driving circuit, and in a second working mode, the voltage conversion circuit is communicated with the charging connector and is used for performing voltage conversion on the electric energy of the charging connector so as to perform voltage conversion on the electric energy of the charging connector so as to charge the temperature acquisition circuit, The main control circuit and the heating driving circuit supply power; the heat generation control method includes:
the temperature acquisition circuit acquires the temperature of the battery;
the main control circuit generates a control signal when the temperature of the battery is lower than a preset temperature;
the heating driving circuit generates a driving signal according to the control signal;
the heating element generates heat under the driving signal to heat the battery.
10. An electronic device, comprising the heat generating system of any one of claims 1-8, a battery, and a charging connector for charging the battery, wherein the heat generating system is configured to heat the battery.
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| CN202210386891.3A CN114639897A (en) | 2022-04-13 | 2022-04-13 | Heating system, heating control method, and electronic apparatus |
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| CN202210386891.3A CN114639897A (en) | 2022-04-13 | 2022-04-13 | Heating system, heating control method, and electronic apparatus |
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