WO2019029069A1 - 电池保护芯片、供电装置及电子烟 - Google Patents

电池保护芯片、供电装置及电子烟 Download PDF

Info

Publication number
WO2019029069A1
WO2019029069A1 PCT/CN2017/115021 CN2017115021W WO2019029069A1 WO 2019029069 A1 WO2019029069 A1 WO 2019029069A1 CN 2017115021 W CN2017115021 W CN 2017115021W WO 2019029069 A1 WO2019029069 A1 WO 2019029069A1
Authority
WO
WIPO (PCT)
Prior art keywords
monitoring module
module
battery
voltage
battery protection
Prior art date
Application number
PCT/CN2017/115021
Other languages
English (en)
French (fr)
Inventor
邱伟华
陈汉森
Original Assignee
常州市派腾电子技术服务有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 常州市派腾电子技术服务有限公司 filed Critical 常州市派腾电子技术服务有限公司
Publication of WO2019029069A1 publication Critical patent/WO2019029069A1/zh

Links

Images

Classifications

    • 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
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect 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
    • 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
    • H02J7/00302—Overcharge protection
    • 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
    • H02J7/00306—Overdischarge protection

Definitions

  • the present invention relates to the field of application of electronic technologies, and in particular, to a battery protection chip, a power supply device, and an electronic cigarette.
  • Electronic cigarette is an electronic product that imitates cigarettes. It can be used to atomize and turn cigarette materials such as nicotine into steam for users to smoke.
  • the conventional electronic cigarette mainly consists of an atomizer and a power supply device.
  • the power supply device includes a battery and a battery protection module.
  • the battery is usually a lithium battery, and the battery protection module is used to provide charging protection and over-discharge protection for the battery.
  • the battery protection module is disposed on the circuit board and generally includes a plurality of discrete chips and components.
  • the plurality of discrete chips and components occupy a large circuit board area, which is disadvantageous for heat dissipation of devices on the circuit board.
  • the embodiment of the invention provides a battery protection chip, a power supply device and an electronic cigarette.
  • the technical solution is as follows:
  • a battery protection chip including:
  • main board further includes a voltage input pin, a ground pin, and a system ground pin;
  • the current monitoring module is respectively connected to the logic controller and the system grounding pin, and the voltage monitoring module is respectively connected to the logic controller and the voltage input pin;
  • the transfer switch is connected in series between the ground pin and the system grounding pin, and the logic controller is connected to the transfer switch;
  • the logic controller is configured to control opening or closing of the switch according to a detection result of the circuit by at least one of the current monitoring module, the voltage monitoring module, and the short circuit protection module.
  • the battery protection chip further includes a short circuit protection module integrated on the main board, and the short circuit protection module is respectively connected to the logic controller and the system grounding leg.
  • the current monitoring module includes:
  • An overcharge current monitoring module for providing a reference voltage signal to the overcharge current monitoring module and a second reference source for providing a reference voltage signal to the overdischarge current monitoring module;
  • the voltage monitoring module includes: an overcharge voltage monitoring module, an overdischarge voltage monitoring module, and a third reference source for providing a reference voltage signal to the overcharge voltage monitoring module and a reference voltage signal for the overdischarge voltage monitoring module The fourth reference source.
  • the battery protection chip further includes a short circuit protection module integrated on the main board, the short circuit protection module includes: a short circuit detection module, and a fifth reference source for providing the short circuit detection module with a reference voltage signal.
  • the battery protection chip further includes:
  • the current monitoring module includes: an overcharge current monitoring module and an over discharge current monitoring module;
  • the voltage monitoring module includes: an overcharge voltage monitoring module and an overdischarge voltage monitoring module;
  • the battery protection chip further includes: a reference source, the reference source is configured to provide a first reference voltage signal for the overcharge current monitoring module and the overdischarge current monitoring module, and the overcharge voltage monitoring module and The over-discharge voltage monitoring module provides a second reference voltage signal.
  • the battery protection chip further includes a short circuit protection module integrated on the main board, the short circuit protection module includes: a short circuit detection module, wherein the reference source is further configured to provide the short circuit detection module A reference voltage signal.
  • the battery protection chip further includes:
  • a power-on reset module the power-on reset module being connected to the logic controller.
  • the battery protection chip further includes:
  • the over temperature protection module is connected to the logic controller, and the logic controller is configured to control the opening or closing of the transfer switch according to the temperature detection result of the over temperature protection module.
  • the battery protection chip further includes:
  • An oscillating module the oscillating module being connected to the logic controller.
  • the battery protection chip further includes: a voltage divider, wherein the voltage divider is used to The overcharge voltage monitoring module and the overdischarge voltage monitoring module allocate a measurement voltage.
  • a power supply device comprising:
  • a battery protection chip according to any of the first aspects.
  • the power supply device further includes: a charging port, a battery, a first current limiting resistor, a filter capacitor, and a second current limiting resistor;
  • a power terminal of the charging port is connected to a positive pole of the battery, a ground end of the charging port is connected to a system grounding leg of the battery protection chip, the charging port is used to charge the battery, and the system is grounded Grounding the foot;
  • a positive electrode of the battery is connected to a voltage input pin of the battery protection chip, and a negative electrode of the battery is connected to a ground pin on the battery protection chip;
  • a first current limiting resistor is connected in series between the positive pole of the battery and the voltage input pin of the battery protection chip;
  • Two ends of the filter capacitor are respectively connected to a positive electrode and a negative electrode of the battery;
  • One end of the second current limiting resistor is connected to the negative pole of the battery, and the other end is grounded.
  • an electronic cigarette comprising:
  • the power supply device of any of the second aspect wherein the power supply device is configured to supply power to the atomizer.
  • the battery protection chip, the power supply device and the electronic cigarette provided by the embodiment of the invention integrate the current monitoring module and the voltage monitoring module into one battery protection chip, and the existing battery protection module can be realized without a plurality of discrete chips.
  • the function reduces the number of chips, correspondingly reduces the area occupied by the circuit board, and improves the heat dissipation efficiency of the circuit board.
  • FIG. 1 is a schematic structural diagram of a battery protection chip according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing the specific structure of the battery protection chip shown in FIG. 1.
  • FIG. 3 is a schematic diagram of a specific structure of another battery protection chip according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of still another battery protection chip according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an electronic cigarette according to an embodiment of the present invention.
  • the current electronic cigarette mainly consists of an atomizer and a power supply device.
  • the power supply device includes a battery and a battery protection module.
  • the battery is usually a lithium battery.
  • the battery protection module is disposed on the circuit board for charging protection and over-discharge protection.
  • a plurality of functions, the battery protection module generally includes a plurality of discrete chips, each chip implementing a function, the plurality of discrete chips occupying a large circuit board area, which is not conducive to heat dissipation of devices on the circuit board.
  • FIG. 1 is a schematic structural diagram of a battery protection chip according to an embodiment of the present invention.
  • the battery protection chip includes:
  • VDD voltage input pin
  • GND ground pin
  • System grounding pin also called motherboard grounding pin
  • the current monitoring module 30 is respectively connected to the logic controller 20 and the system grounding pin VM.
  • the voltage monitoring module 40 is respectively connected to the logic controller 20 and the voltage input pin VDD, and the short circuit protection module 50 is respectively connected with the logic controller 20 and the system grounding pin VM. connection.
  • the current monitoring module 30 is configured to detect whether a current between the logic controller 20 and the system grounding pin VM is overcharged, that is, the battery is fully charged and continues to be charged, or the current monitoring The measuring module 30 is configured to detect whether a current between the logic controller 20 and the system grounding pin VM is over-discharged, that is, the battery power supply time is too long, the battery current is too low, and the battery needs to be charged; the voltage monitoring module 40 is used for detecting Whether the voltage between the voltage input pin VDD and the logic controller 20 is overcharged, that is, the battery is fully charged and continues to be charged, or the voltage monitoring module 40 is configured to detect the voltage input pin VDD and the logic controller 20 Whether the circuit is over-discharged, that is, the battery power supply time is too long, the battery voltage is too low, and the battery needs to be charged; the short-circuit protection module 50 is used to detect whether the circuit between the voltage input pin VDD and the system ground pin VM occurs.
  • the changeover switch 60 is connected in series between the ground pin GND and the system ground pin VM, the logic controller 20 is connected to the changeover switch 60, and the logic controller 20 is used according to the current monitoring module 30, the voltage monitoring module 40 and the short circuit protection module 50.
  • the detection result of the circuit by at least one of the modules controls the opening or closing of the changeover switch 60.
  • the above is only a short circuit protection circuit provided in the battery protection chip.
  • the short circuit protection circuit may not be provided on the premise that the performance of the battery protection chip can be guaranteed.
  • the functions of the existing battery protection module can be realized without a plurality of discrete chips, compared with the conventional battery.
  • the protection module reduces the number of chips, correspondingly reduces the area occupied by the circuit board, and improves the heat dissipation efficiency of the circuit board.
  • FIG. 2 is a schematic structural diagram of the battery protection chip shown in FIG. 1.
  • the current monitoring module 30 includes:
  • the overcharge current monitoring module 301 can be a current comparator, the inverting input of the current comparator is connected to the system grounding pin VM, the forward input terminal is connected to the first reference source X1, and the current comparator is at the input signal.
  • the terminal ie, the inverting input of the current comparator
  • the inverting input terminal indicates that the current value in the circuit is less than the preset first reference current value, and the current comparator outputs a high level to the logic controller 20; when the potential of the inverting input terminal is higher than the positive phase input terminal, indicating the circuit
  • the current value is greater than a preset first reference current value, and the current comparator outputs a low level to the logic controller 20.
  • the current comparator when the current comparator outputs a high level to the logic controller 20 (this is indicated in the circuit) The current value is less than the preset first reference current value, that is, the case where the current overcharge does not occur.
  • the logic controller 20 can control and keep the changeover switch 60 turned on according to the received high level, so that the ground pin GND The circuit between the system and the system grounding pin VM is turned on to cause the battery to enter the charging circuit.
  • the logic controller 20 can control the switch 60 to be turned off according to the received low level, so that the circuit between the ground pin GND and the system ground pin VM is turned off, so that the circuit is turned off.
  • the battery is off the charging circuit.
  • the overcurrent monitoring module 302 can be a current comparator, the inverting input of the current comparator is connected to the system grounding pin VM, the forward input terminal is connected to the second reference source X2, and the current comparator is at the input signal.
  • the terminal ie, the inverting input of the current comparator
  • the inverting input terminal indicates that the current value in the circuit is less than the preset second reference current value, and the current comparator outputs a high level to the logic controller 20; when the potential of the inverting input terminal is higher than the positive phase input terminal, indicating the circuit
  • the current value is greater than a preset second reference current value, and the current comparator outputs a low level to the logic controller 20.
  • the logic controller 20 when the current comparator outputs a high level to the logic controller 20, the logic controller 20 according to the received low level (this indicates that the current value in the circuit is greater than the preset second reference current value, that is, In the case where the current is not excessively discharged, the changeover switch 60 can be controlled and kept turned on, so that the circuit between the ground pin GND and the system ground pin VM is turned on, so that the battery enters the discharge loop when the current comparator goes to the logic controller 20
  • the output level is high (this indicates that the current value in the circuit is less than the preset second reference current value, that is, the current over-discharge occurs)
  • the logic controller 20 can control the conversion according to the received low level. Switch 60 is turned off, causing the circuit between ground pin GND and system ground pin VM to be turned off, causing the battery to exit the discharge loop.
  • the voltage monitoring module 40 includes:
  • the overcharge voltage monitoring module 401 can be a voltage comparator, the inverse input of the voltage comparator is connected to the voltage input pin VDD, the forward input terminal is connected to the third reference source X3, and the voltage comparator is The voltage signal input to the input signal terminal (ie, the inverting input terminal of the voltage comparator) The third reference voltage signal provided by the three reference sources X3 is compared. When the potential of the non-inverting input terminal is higher than the inverting input terminal, the voltage comparator outputs a high level to the logic controller 20; when the potential of the inverting input terminal is higher than the positive phase At the input, the voltage comparator outputs a low level to the logic controller 20.
  • the logic controller 20 when the voltage comparator outputs a high level to the logic controller 20 (this indicates that the voltage signal in the circuit is smaller than the preset third reference voltage signal, that is, the case where the voltage is not overcharged), the logic controller 20 According to the received high level, the changeover switch 60 can be controlled and kept turned on, so that the circuit between the ground pin GND and the system ground pin VM is turned on, so that the battery is connected to the charging loop, when the voltage comparator is turned to the logic controller When 20 outputs a low level (this indicates that the voltage signal in the circuit is greater than the preset third reference voltage signal, that is, the case where the voltage is overcharged), the logic controller 20 can control the conversion according to the received low level. Switch 60 is turned off, causing the circuit between ground pin GND and system ground pin VM to be turned off, leaving the battery out of the charging loop.
  • the over-discharge voltage monitoring module 402 can be a voltage comparator, the inverting input terminal of the voltage comparator is connected to the voltage input pin VDD, the forward input terminal is connected to the fourth reference source X4, and the voltage comparator is in the The voltage signal input to the input signal terminal (ie, the positive input terminal of the voltage comparator) is compared with the fourth reference voltage signal provided by the fourth reference source X4. When the potential of the non-inverting input terminal is higher than the inverting input terminal, the voltage comparison is performed. The device outputs a high level to the logic controller 20; when the potential of the inverting input terminal is higher than the positive phase input terminal, the voltage comparator outputs a low level to the logic controller 20.
  • the logic controller 20 when the voltage comparator outputs a low level to the logic controller 20 (this indicates that the voltage signal in the circuit is greater than the preset fourth reference voltage signal, that is, the case where the voltage is not excessively discharged), the logic controller 20 According to the received high level, the changeover switch 60 can be controlled and kept turned on, so that the circuit between the ground pin GND and the system ground pin VM is turned on, so that the battery enters the discharge loop, when the voltage comparator goes to the logic controller 20 When the output level is high (this indicates that the voltage signal in the circuit is smaller than the preset fourth reference voltage signal, that is, the voltage overdischarge occurs), the logic controller 20 can control the conversion according to the received low level. Switch 60 is turned off, causing the circuit between ground pin GND and system ground pin VM to be turned off, causing the battery to exit the discharge loop.
  • the logic controller 20 controls and keeps the switch 60 turned on, turns on the circuit between the ground pin GND and the system ground pin VM, and the battery enters the charging circuit to realize battery charging; when the battery is full After the battery voltage reaches the first reference voltage (which may be a rated voltage, such as 4.2V), the logic controller 20 receives the low level signal output by the overcharge current monitoring module 301, or the voltage of the battery reaches the third reference voltage. When the logic controller 20 receives the overcharge voltage monitoring module When the 401 outputs a low level signal, the logic controller 20 controls the transfer switch 60 to be turned off, and the battery is separated from the working circuit to realize overcharge protection.
  • the first reference voltage which may be a rated voltage, such as 4.2V
  • the logic controller 20 controls and keeps the transfer switch 60 open, turns on the circuit between the ground pin GND and the system ground pin VM, and the battery enters the working circuit to realize battery discharge, which is a power device.
  • the working voltage is supplied, the battery power is slowly consumed, and gradually decreases by the rated voltage (such as 4.2V).
  • the logic controller 20 receives the over-discharge voltage monitoring.
  • the logic controller 20 receives the high level signal output by the over discharge current monitoring module 302, and controls the changeover switch 60 to be turned off, so that the grounding tube The circuit between the foot GND and the system ground pin VM is disconnected, so that the battery is separated from the discharge loop, and over-discharge protection is realized.
  • the short circuit protection module 50 includes:
  • the short circuit detecting module 501 can be a current comparator, the inverting input end of the current comparator is connected to the system grounding pin VM, the forward input end is connected to the fifth reference source X5, and the current comparator is at the input signal end ( That is, the inverting input terminal of the current comparator converts the current signal into a voltage signal through the resistance circuit, and then compares it with the fifth reference voltage signal provided by the fifth reference source X5, when the potential of the non-inverting input terminal is higher than the inversion phase
  • the input terminal indicates that the current value in the circuit is less than the preset fifth reference current value, and the current comparator outputs a high level to the logic controller 20; when the potential of the inverting input terminal is higher than the positive phase input terminal, indicating the current in the circuit The value is greater than a preset fifth reference current value, and the current comparator outputs a low level to the logic controller 20.
  • the logic controller 20 when the current comparator outputs a high level to the logic controller 20 (in this case, the current value in the circuit is greater than the preset fifth reference current value, that is, the case where the short circuit does not occur), the logic controller 20 is configured according to The received low level can control and keep the transfer switch 60 open, so that the circuit between the ground pin GND and the system ground pin VM is turned on, when the current comparator outputs a high level to the logic controller 20 (in this case, The current value in the circuit is less than the preset fifth reference current value, that is, the short circuit occurs.
  • the logic controller 20 can control the switch 60 to be turned off according to the received low level, so that the ground pin GND The circuit between the system and the system ground pin VM is turned off.
  • the chip has a load short-circuit fault, and the voltage at the VDD terminal of the voltage input pin suddenly drops to a fifth reference voltage signal (eg, 2.4V), and the short-circuit detection module 501 detects To this voltage dip, a low level control signal is output to the logic controller 20, the logic controller 20 controls the transfer switch 60 to turn off, and the battery is disconnected from the working circuit to achieve short circuit protection.
  • a fifth reference voltage signal eg, 2.4V
  • the logic controller 20 since the logic controller 20 is connected to multiple detection modules, different high and low levels may be received in different time periods. In order to ensure effective operation of the logic controller 20, at least one of the logic controllers 20 may be integrated. Door circuits, such as AND gates, OR gates, NOT gates, NAND gates, NOR gates, AND NOR gates, XOR gates, etc. Thus, the logic controller 20 can process the level signal input by the current monitoring module, the voltage monitoring module, and the short circuit protection module through the corresponding gate circuit to obtain a signal for controlling the changeover switch.
  • the logic controller 20 can process the level signal input by the current monitoring module, the voltage monitoring module, and the short circuit protection module through the corresponding gate circuit to obtain a signal for controlling the changeover switch.
  • the battery protection chip may further include: a voltage distributor 70 for distributing the measurement voltage to the overcharge voltage monitoring module 401 and the over-discharge voltage monitoring module 402.
  • the voltage divider 70 can convert a voltage signal input by the voltage input pin VDD into two voltage signals, and input the two voltage signals of the output into the overcharge voltage monitoring module 401 and the overdischarge voltage monitoring module 402, respectively.
  • the road voltage signal can be fine-tuned to provide a stable measurement voltage for the overcharge voltage monitoring module 401 and the over-discharge voltage monitoring module 402, so that the two voltage signals are suitable for comparison with the corresponding reference voltage signals.
  • FIG. 2 when the current monitoring module 30, the voltage monitoring module 40, and the short-circuit protection module 50 output a high level, the logic controller 20 controls and keeps the switching switch 60 turned on as an example for description. In practical applications, The current monitoring module 30, the voltage monitoring module 40, and the short circuit protection module 50 may also be integrated with an inverter or the like. When the output level is low, the logic controller 20 controls and keeps the changeover switch 60 open.
  • FIG. 2 is only a schematic illustration. Any battery protection chip obtained by the variation on the basis of Fig. 2 should also be covered within the scope of protection of the embodiment of the present invention.
  • the battery protection chip further includes a reference source X, and the reference source X can be set with a voltage conversion.
  • the circuit causes the reference source to output one, two or more sets of reference voltage signals, which may be the same or different.
  • the reference source X is used for the overcharge current monitoring module 301, and the overcurrent monitoring is performed.
  • the module 302 and the short circuit detection module 501 provide a first reference voltage signal, and provide a second reference voltage signal for the overcharge voltage monitoring module 401 and the overdischarge voltage monitoring module 402, the first reference voltage signal and the second reference voltage signal may be the same It can also be different.
  • the reference source X can also output the same reference voltage signal, and is respectively provided to the overcharge current monitoring module 301, the overdischarge current monitoring module 302, the short circuit detection module 501, the overcharge voltage monitoring module 401, and the overdischarge voltage monitoring.
  • Module 402 ie, the first reference voltage signal is the same as the second reference voltage signal
  • each module changes a voltage value compared with the reference voltage signal through a respective internal circuit.
  • the reference source X can also output 5 sets of different reference voltage signals, which are respectively provided to the overcharge current monitoring module 301, the overdischarge current monitoring module 302, the short circuit detection module 501, the overcharge voltage monitoring module 401 and the overdischarge.
  • the five sets of reference signals may be provided in a time-sharing manner.
  • the reference source is an overcharge current monitoring module 301, and/or the overcharge voltage monitoring module 401 provides a reference signal.
  • the reference is used.
  • the source is the over-current monitoring module 302, and/or the short-circuit detecting module 501, and/or the over-discharge voltage monitoring module 402 provides another reference signal, which is not limited by the embodiment of the present invention.
  • the overcharge current monitoring module 301, the overdischarge current monitoring module 302, the short circuit detection module 501, the overcharge voltage monitoring module 401 and the overdischarge voltage monitoring module 402 share the same reference source, thereby reducing the number of reference sources and thereby reducing battery protection. Circuit complexity in the chip.
  • the changeover switch 60 provided by the embodiment of the present invention may be a transistor whose gate is connected to the logic controller 20, the first pole of the transistor is connected to the ground pin GND, and the second pole is grounded to the system.
  • the foot VM is connected, wherein the first source is the source, the second source is the drain; or the first pole is the drain and the second source is the source.
  • the transistor can be an N-channel metal oxide field effect transistor (MOS) or a PMOS.
  • the battery protection chip may further include: a power-on reset module 80, an over-temperature protection module 90, and an oscillation module 100.
  • the power-on reset module 80 is connected to the logic controller 20.
  • the power-on reset module 80 is configured to control the logic controller 20 to perform a power-on reset, and can ensure that after loading the voltage to the logic controller 20, the logic controller 20 initializes to a preset initial state.
  • the over temperature protection module 90 is connected to the logic controller 20 for controlling the opening or closing of the changeover switch 60 according to the temperature detection result of the over temperature protection module 90.
  • the over temperature protection module 90 can be a temperature sensor, and the over temperature protection module 90 outputs high power to the logic controller 20 when detecting that the temperature in the circuit is greater than a preset temperature threshold (indicating that the temperature is not too high)
  • the logic controller 20 can control and keep the changeover switch 60 turned on according to the received high level, so that the circuit between the ground pin GND and the system ground pin VM is turned on, and the over temperature protection module 90 detects the circuit.
  • the logic controller 20 can control the switch 60 to be turned off according to the received low level, so that the ground pin GND and the system ground pin VM The circuit between them is turned off.
  • the over temperature protection module 90 can be a diode over temperature detection circuit that utilizes a characteristic that the diode conduction voltage decreases as the temperature rises.
  • the diode over temperature detection circuit can include a diode, a comparator, and the like.
  • the oscillation module 100 is connected to the logic controller 20.
  • the oscillating module may be an oscillating circuit for generating an oscillating electric signal, which is an electric signal whose magnitude and direction change with a period, and generally includes a high level and a low level, based on the oscillating electric signal,
  • the logic controller 20 can implement control of the changeover switch 60.
  • capacitors or resistors such as the current monitoring module 30 and/or short circuit protection
  • a resistor may be disposed on the circuit between the module 50 and the VM, which is not described in detail in the embodiment of the present invention.
  • the traditional battery protection module usually has at least two 3.3*3.3 square millimeter (mm 2 ) MOS tubes in order to realize the charging protection and over-discharge protection functions.
  • mm 2 square millimeter
  • the drive control function at least the setting is required.
  • the diameter of the main board is usually 16mm and the area is about 200mm 2 , and the charging protection chip provided by the embodiment of the invention can be effectively used. Reduce the footprint on the motherboard.
  • the above is only a short circuit protection circuit provided in the battery protection chip.
  • the short circuit protection circuit may not be provided on the premise that the performance of the battery protection chip can be guaranteed.
  • the functions of the existing battery protection module can be realized without a plurality of discrete chips. Compared with the traditional battery protection module, the number of chips is reduced, the area occupied by the circuit board is reduced, and the heat dissipation efficiency of the circuit board is improved.
  • the power supply device includes: a charging port, a battery 01, a battery protection chip 02, a first current limiting resistor R1, a filter capacitor C, and a second current limiting resistor R2. .
  • the power terminal of the charging port is connected to the positive terminal of the battery 01, the grounding end of the charging port and the battery protection core
  • the system ground pin VM of the slice 02 is connected, the charging port is used to charge the battery 01, and the system grounding pin VM is grounded.
  • the positive pole of the charging port is connected to the positive pole of the battery 01, the negative pole of the charging port is connected to the system grounding end VM, and the grounding end VM of the system is grounded.
  • the positive electrode of the battery 01 is connected to the voltage input pin VDD of the battery protection chip 02, and the negative electrode of the battery 01 is connected to the ground pin GND of the battery protection chip.
  • a first current limiting resistor R1 is connected in series between the positive pole of the battery 01 and the voltage input pin VDD of the battery 01 protection chip.
  • the first current limiting resistor R1 has a current limiting function, which can also be used for filtering interference in the circuit.
  • the signal prevents the pre-stage circuit from interfering with the latter circuit, and its resistance can be 100 ohms (R) or 240 ohms ( ⁇ ).
  • the two ends of the filter capacitor C are respectively connected to the positive and negative terminals of the battery 01.
  • the filter capacitor C is used to provide a stable operating voltage for the battery protection chip, and the capacitance can be 0.1 microfarad ( ⁇ F).
  • the second current limiting resistor R2 has a current limiting function.
  • the battery protection chip may have multiple pins.
  • FIG. 5 assumes that the pins 3, 6, 9, and 12 are voltage input pins VDD, and the pins 1, 2, 4, 5, 7, and 8 10, 11 are the grounding pin GND.
  • the pin distribution may be other ways, which will not be described in detail in the embodiments of the present invention.
  • the embodiment of the present invention provides a power supply device in which a current monitoring module, a voltage monitoring module, and a short circuit protection module are integrated in a battery protection chip, and the existing multiple chips can be realized.
  • the function of the battery protection module reduces the number of chips, correspondingly reduces the area occupied by the circuit board, and improves the heat dissipation efficiency of the circuit board.
  • An embodiment of the present invention further provides an electronic cigarette, which may include a power supply device as shown in FIG. 5 and an atomizer for supplying power to the atomizer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Protection Of Static Devices (AREA)

Abstract

一种电池保护芯片、供电装置及电子烟，属于电子技术应用领域。电池保护芯片包括：主板（10），以及，集成在主板（10）上的逻辑控制器（20）、电流监测模块（30）、电压监测模块（40）和转换开关（60），主板（10）还包括电压输入管脚（VDD）、接地管脚（GND）和系统接地脚（VM）；电流监测模块（30）与逻辑控制器（20）和系统接地脚（VM）连接，电压监测模块（40）与逻辑控制器（20）和电压输入管脚（VDD）连接。转换开关（60）串联在接地管脚（GND）和系统接地脚（VM）之间，逻辑控制器（20）与转换开关（60）连接；逻辑控制器（20）用于根据电流监测模块（30）、电压监测模块（40）和短路保护模块（50）中的至少一个模块对电路的检测结果，控制转换开关（60）的开启或关闭。该电池保护芯片解决了电路板散热效果差的问题，用于电子烟的电池保护。

Description

电池保护芯片、供电装置及电子烟 技术领域
本发明涉及电子技术应用领域，特别涉及一种电池保护芯片、供电装置及电子烟。
背景技术
电子烟是一种模仿卷烟的电子产品，可以通过雾化等手段，将尼古丁等卷烟材料变成蒸汽后供用户吸食。
传统的电子烟主要由雾化器和供电装置组成，该供电装置包括电池和电池保护模块，该电池通常为锂电池，该电池保护模块用于为电池提供充电保护和过放保护等。
该电池保护模块设置在电路板上，一般包括多个分立的芯片和元器件，该多个分立的芯片和元器件占用的电路板面积较大，不利于电路板上器件的散热。
发明内容
为了解决电路板散热效果差的问题，本发明实施例提供了一种电池保护芯片、供电装置及电子烟。所述技术方案如下：
根据本发明实施例的第一方面，提供一种电池保护芯片，包括：
主板，以及，集成在所述主板上的逻辑控制器、电流监测模块、电压监测模块和转换开关，所述主板还包括电压输入管脚、接地管脚和系统接地脚；
所述电流监测模块分别与所述逻辑控制器和所述系统接地脚连接，所述电压监测模块分别与所述逻辑控制器和所述电压输入管脚连接；
所述转换开关串联在所述接地管脚和所述系统接地脚之间，所述逻辑控制器与所述转换开关连接；
所述逻辑控制器用于根据所述电流监测模块、所述电压监测模块和所述短路保护模块中的至少一个模块对电路的检测结果，控制所述转换开关的开启或关闭。
可选地，所述电池保护芯片还包括集成在所述主板上的短路保护模块，所述短路保护模块分别与所述逻辑控制器和所述系统接地脚连接。
可选的，所述电流监测模块包括：
过充电流监测模块，过放电流监测模块，以及为所述过充电流监测模块提供基准电压信号的第一基准源和为所述过放电流监测模块提供基准电压信号的第二基准源；
所述电压监测模块包括：过充电压监测模块，过放电压监测模块，以及为所述过充电压监测模块提供基准电压信号的第三基准源和为所述过放电压监测模块提供基准电压信号的第四基准源。
可选的，所述电池保护芯片还包括集成在所述主板上的短路保护模块，所述短路保护模块包括：短路检测模块，以及为所述短路检测模块提供基准电压信号的第五基准源。
可选的，所述电池保护芯片还包括：
所述电流监测模块包括：过充电流监测模块和过放电流监测模块；
所述电压监测模块包括：过充电压监测模块和过放电压监测模块；
所述电池保护芯片还包括：基准源，所述基准源用于为所述过充电流监测模块和所述过放电流监测模块提供第一基准电压信号，以及为所述过充电压监测模块和所述过放电压监测模块提供第二基准电压信号。
可选的，所述电池保护芯片还包括集成在所述主板上的短路保护模块，所述短路保护模块包括：短路检测模块，所述基准源还用于为所述短路检测模块提供所述第一基准电压信号。
可选的，所述电池保护芯片还包括：
上电复位模块，所述上电复位模块与所述逻辑控制器连接。
可选的，所述电池保护芯片还包括：
过温保护模块，所述过温保护模块与所述逻辑控制器连接，所述逻辑控制器用于根据所述过温保护模块的温度检测结果，控制所述转换开关的开启或关闭。
可选的，所述电池保护芯片还包括：
振荡模块，所述振荡模块与所述逻辑控制器连接。
可选的，所述电池保护芯片还包括：电压分配器，所述电压分配器用于为 所述过充电压监测模块与所述过放电压监测模块分配测量电压。
根据本发明实施例的第二方面，提供一种供电装置，所述供电装置包括：
第一方面任一所述的电池保护芯片。
可选的，所述供电装置还包括：充电端口、电池、第一限流电阻、滤波电容和第二限流电阻；
所述充电端口的电源端与所述电池的正极连接，所述充电端口的接地端与所述电池保护芯片的系统接地脚连接，所述充电端口用于为所述电池充电，所述系统接地脚接地；
所述电池的正极与所述电池保护芯片的电压输入管脚连接，所述电池的负极与所述电池保护芯片上的接地管脚连接；
所述电池的正极与所述电池保护芯片的电压输入管脚之间串联有第一限流电阻；
所述滤波电容的两端分别与所述电池的正极和负极连接；
所述第二限流电阻的一端与所述电池的负极连接，另一端接地。
根据本发明实施例的第三方面，提供一种电子烟，所述电子烟包括：
第二方面任一所述的供电装置，以及雾化器，所述供电装置用于向所述雾化器供电。
本发明的实施例提供的技术方案可以包括以下有益效果：
本发明实施例提供了的电池保护芯片、供电装置及电子烟，由于将电流监测模块和电压监测模块集成在一个电池保护芯片中，无需分立的多个芯片即可实现现有的电池保护模块的功能，相较于传统电池保护模块，减少了芯片的个数，相应的减少了占用电路板的面积，提高了电路板的散热效率。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本发明。
附图说明
为了更清楚地说明本发明的实施例，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种电池保护芯片的结构示意图。
图2是图1所示的电池保护芯片的具体结构示意图。
图3是本发明实施例提供的另一种电池保护芯片的具体结构示意图。
图4是本发明实施例提供的又一种电池保护芯片的结构示意图。
图5是本发明实施例提供的一种电子烟的结构示意图。
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
目前的电子烟主要由雾化器和供电装置组成，该供电装置包括电池和电池保护模块，该电池通常为锂电池，该电池保护模块设置在电路板上，为了实现充电保护和过放保护等多种功能，电池保护模块一般包括多个分立的芯片，每个芯片实现一种功能，该多个分立的芯片占用的电路板面积较大，不利于电路板上器件的散热。
为了解决供电装置中芯片占用的电路板面积较大，导致器件散热效果较差的问题，本发明实施例提供一种电池保护芯片，该电池保护芯片能够实现现有的电池保护模块的功能，请参见图1，图1是本发明实施例提供的一种电池保护芯片的结构示意图。该电池保护芯片包括：
主板10，以及，集成在主板10上的逻辑控制器20、电流监测模块30、电压监测模块40、短路保护模块50和转换开关60，主板10还包括电压输入管脚VDD、接地管脚GND和系统接地脚(也称主板接地脚)VM。
电流监测模块30分别与逻辑控制器20和系统接地脚VM连接，电压监测模块40分别与逻辑控制器20和电压输入管脚VDD连接，短路保护模块50分别与逻辑控制器20和系统接地脚VM连接。
其中，电流监测模块30用于检测逻辑控制器20和系统接地脚VM之间的电路是否发生电流过度充电，即电池已经充满电还在继续充电，或者，电流监 测模块30用于检测逻辑控制器20和系统接地脚VM之间的电路是否发生电流过度放电，即电池供电时间过长，电池电流过低，此时电池需要充电；电压监测模块40用于检测电压输入管脚VDD和逻辑控制器20之间的电路是否发生电压过度充电，即电池已经充满电还在继续充电，或者，电压监测模块40用于检测电压输入管脚VDD和逻辑控制器20之间的电路是否发生电压过度放电，即电池供电时间过长，电池电压过低，此时电池需要充电；短路保护模块50用于检测电压输入管脚VDD和系统接地脚VM之间的电路是否发生短路；转换开关60串联在接地管脚GND和系统接地脚VM之间，逻辑控制器20与转换开关60连接，逻辑控制器20用于根据电流监测模块30、电压监测模块40和短路保护模块50中的至少一个模块对电路的检测结果，控制转换开关60的开启或关闭。
可选地，上述仅以电池保护芯片中设置有短路保护电路为例，实际实现时，在电池保护芯片的性能可以保证的前提下，也可以不设置该短路保护电路。
本发明实施例中，由于将电流监测模块、电压监测模块和短路保护模块集成在一个电池保护芯片中，无需分立的多个芯片即可实现现有的电池保护模块的功能，相较于传统电池保护模块，减少了芯片的个数，相应的减少了占用电路板的面积，提高了电路板的散热效率。
如图2所示，图2是图1所示的电池保护芯片的具体结构示意图，在该电池保护芯片中，电流监测模块30包括：
过充电流监测模块301、过放电流监测模块302以及为过充电流监测模块301提供基准电压信号的第一基准源X1和为过放电流监测模块302提供基准电压信号的第二基准源X2。
其中，过充电流监测模块301可以为一电流比较器，该电流比较器的反向输入端与系统接地脚VM连接，正向输入端与第一基准源X1连接，电流比较器是在输入信号端(即该电流比较器的反向输入端)通过电阻电路把电流信号转换成了电压信号，然后与第一基准源X1提供的第一基准电压信号进行比较，当正相输入端的电位高于反相输入端，表示电路中的电流值小于预设的第一基准电流值，电流比较器向逻辑控制器20输出高电平；当反相输入端的电位高于正相输入端，表示电路中的电流值大于预设的第一基准电流值，电流比较器向逻辑控制器20输出低电平。
相应的，当电流比较器向逻辑控制器20输出高电平时(此时表示电路中的 电流值小于预设的第一基准电流值，也即是未出现电流过度充电的情况)，逻辑控制器20根据接收到的高电平，可以控制并保持转换开关60开启，使得接地管脚GND和系统接地脚VM之间的电路导通，使电池进入充电回路，当电流比较器向逻辑控制器20输出低电平时(此时表示电路中的电流值大于预设的第一基准电流值，也即是出现了电流过度充电的情况)，逻辑控制器20根据接收到的低电平，可以控制转换开关60关断，使得接地管脚GND和系统接地脚VM之间的电路关断，使电池脱离充电回路。
其中，过放电流监测模块302可以为一电流比较器，该电流比较器的反向输入端与系统接地脚VM连接，正向输入端与第二基准源X2连接，电流比较器是在输入信号端(即该电流比较器的反向输入端)通过电阻电路把电流信号转换成了电压信号，然后与第二基准源X2提供的第二基准电压信号进行比较，当正相输入端的电位高于反相输入端，表示电路中的电流值小于预设的第二基准电流值，电流比较器向逻辑控制器20输出高电平；当反相输入端的电位高于正相输入端，表示电路中的电流值大于预设的第二基准电流值，电流比较器向逻辑控制器20输出低电平。
相应的，当电流比较器向逻辑控制器20输出高电平时，逻辑控制器20根据接收到的低电平(此时表示电路中的电流值大于预设的第二基准电流值，也即是未出现电流过度放电的情况)，可以控制并保持转换开关60开启，使得接地管脚GND和系统接地脚VM之间的电路导通，使电池进入放电回路，当电流比较器向逻辑控制器20输出高电平时(此时表示电路中的电流值小于预设的第二基准电流值，也即是出现了电流过度放电的情况)，逻辑控制器20根据接收到的低电平，可以控制转换开关60关断，使得接地管脚GND和系统接地脚VM之间的电路关断，使电池脱离放电回路。
可选的，电压监测模块40包括：
过充电压监测模块401、过放电压监测模块402以及为过充电压监测模块401提供基准电压信号的第三基准源X3和为过放电压监测模块402提供基准电压信号的第四基准源X4。
其中，过充电压监测模块401可以为一电压比较器，该电压比较器的反向输入端与电压输入管脚VDD连接，正向输入端与第三基准源X3连接，电压比较器是在将输入信号端(即该电压比较器的反向输入端)输入的电压信号与第 三基准源X3提供的第三基准电压信号进行比较，当正相输入端的电位高于反相输入端，电压比较器向逻辑控制器20输出高电平；当反相输入端的电位高于正相输入端，电压比较器向逻辑控制器20输出低电平。相应的，当电压比较器向逻辑控制器20输出高电平时(此时表示电路中的电压信号小于预设的第三基准电压信号，也即是未出现电压过度充电的情况)，逻辑控制器20根据接收到的高电平，可以控制并保持转换开关60开启，使得接地管脚GND和系统接地脚VM之间的电路导通，使电池接入充电回路，当电压比较器向逻辑控制器20输出低电平时(此时表示电路中的电压信号大于预设的第三基准电压信号，也即是出现电压过度充电的情况)，逻辑控制器20根据接收到的低电平，可以控制转换开关60关断，使得接地管脚GND和系统接地脚VM之间的电路关断，使电池脱离充电回路。
其中，过放电压监测模块402可以为一电压比较器，该电压比较器的反向输入端与电压输入管脚VDD连接，正向输入端与第四基准源X4连接，电压比较器是在将输入信号端(即该电压比较器的正向输入端)输入的电压信号与第四基准源X4提供的第四基准电压信号进行比较，当正相输入端的电位高于反相输入端，电压比较器向逻辑控制器20输出高电平；当反相输入端的电位高于正相输入端，电压比较器向逻辑控制器20输出低电平。相应的，当电压比较器向逻辑控制器20输出低电平时(此时表示电路中的电压信号大于预设的第四基准电压信号，也即是未出现电压过度放电的情况)，逻辑控制器20根据接收到的高电平，可以控制并保持转换开关60开启，使得接地管脚GND和系统接地脚VM之间的电路导通，使电池进入放电回路，当电压比较器向逻辑控制器20输出高电平时(此时表示电路中的电压信号小于预设的第四基准电压信号，也即是出现了电压过度放电的情况)，逻辑控制器20根据接收到的低电平，可以控制转换开关60关断，使得接地管脚GND和系统接地脚VM之间的电路关断，使电池脱离放电回路。
具体的，在需要进行充电时，逻辑控制器20控制并保持转换开关60开启，将接地管脚GND和系统接地脚VM之间的电路导通，电池进入充电回路，实现电池充电；当电池充满电后，电池电压达到第一基准电压(可以为额定电压，如4.2V)，逻辑控制器20接收到过充电流监测模块301输出的低电平信号，或者，电池的电压达到第三基准电压时，逻辑控制器20接收到过充电压监测模块 401输出的低电平信号，则逻辑控制器20控制转换开关60关断，电池脱离工作回路，实现了过充电保护。
在用电装置需要工作时，逻辑控制器20控制并保持转换开关60开启，将接地管脚GND和系统接地脚VM之间的电路导通，电池进入工作回路，实现电池放电，为用电装置工作提供工作电压，电池的电量会慢慢消耗，由额定电压(如4.2V)逐渐减小，当电池的电压小于第四基准电压(如3V)时，逻辑控制器20接收到过放电压监测模块402输出的高电平信号，或者，当电池的电压小于第二基准电压时，逻辑控制器20接收到过放电流监测模块302输出的高电平信号，控制转换开关60关闭，使得接地管脚GND和系统接地脚VM之间的电路断开，使得电池脱离放电回路，实现了过放保护。
可选的，短路保护模块50包括：
短路检测模块501，以及为短路检测模块501提供基准电压信号的第五基准源X5。
其中，短路检测模块501可以为一电流比较器，该电流比较器的反向输入端与系统接地脚VM连接，正向输入端与第五基准源X5连接，电流比较器是在输入信号端(即该电流比较器的反向输入端)通过电阻电路把电流信号转换成了电压信号，然后与第五基准源X5提供的第五基准电压信号进行比较，当正相输入端的电位高于反相输入端，表示电路中的电流值小于预设的第五基准电流值，电流比较器向逻辑控制器20输出高电平；当反相输入端的电位高于正相输入端，表示电路中的电流值大于预设的第五基准电流值，电流比较器向逻辑控制器20输出低电平。
相应的，当电流比较器向逻辑控制器20输出高电平时(此时表示电路中的电流值大于预设的第五基准电流值，也即是未出现短路的情况)，逻辑控制器20根据接收到的低电平，可以控制并保持转换开关60开启，使得接地管脚GND和系统接地脚VM之间的电路导通，当电流比较器向逻辑控制器20输出高电平时(此时表示电路中的电流值小于预设的第五基准电流值，也即是出现了短路的情况)，逻辑控制器20根据接收到的低电平，可以控制转换开关60关断，使得接地管脚GND和系统接地脚VM之间的电路关断。
具体的，在用电装置工作过程中，芯片发生负载短路故障，电压输入管脚VDD端的电压突然降到第五基准电压信号(如2.4V)，短路检测模块501检测 到该电压突降，向逻辑控制器20输出低电平的控制信号，逻辑控制器20控制转换开关60关断，电池脱离工作回路，实现了短路保护。
实际应用中，由于逻辑控制器20与多个检测模块连接，在不同时段可能接收到不同的高低电平，为了保证逻辑控制器20的有效工作，该逻辑控制器20中可以集成有至少一种门电路，如与门、或门、非门、与非门、或非门、与或非门、异或门等。这样逻辑控制器20可以通过相应的门电路对电流监测模块、电压监测模块和短路保护模块输入的电平信号进行处理得到控制转换开关的信号。
需要说明的是，如图2或3所示，上述电池保护芯片还可以包括：电压分配器70，电压分配器70用于为过充电压监测模块401和过放电压监测模块402分配测量电压。电压分配器70可以将电压输入管脚VDD输入的一路电压信号转换成两路电压信号，并将输出的两路电压信号分别输入过过充电压监测模块401和过放电压监测模块402，并且两路电压信号可以微调，为过充电压监测模块401和过放电压监测模块402提供稳定的测量电压，使得两路电压信号适合与相应的基准电压信号做比较。
还需要说明的是，图2中是以电流监测模块30、电压监测模块40和短路保护模块50输出高电平时，逻辑控制器20控制并保持转换开关60开启为例进行说明的，实际应用中，电流监测模块30、电压监测模块40和短路保护模块50也可以集成有反向器等，在其输出低电平时，逻辑控制器20控制并保持转换开关60开启，图2只是示意性说明，任何在图2基础上进行的变化所得到电池保护芯片也应涵盖在本发明实施例的保护范围内。
实际应用中，图2所示的第一基准源至第五基准源还可以以其他方式替换，如图4所示，电池保护芯片还包括一基准源X，该基准源X内可以设置电压转换电路，使得该基准源输出一组、两组或者多组基准电压信号，该基准电压信号可以相同，也可以不同，例如，该基准源X用于为过充电流监测模块301，过放电流监测模块302和短路检测模块501提供第一基准电压信号，以及为过充电压监测模块401和过放电压监测模块402提供第二基准电压信号，该第一基准电压信号与第二基准电压信号可以相同也可以不同。可选的，该基准源X也可以输出相同的基准电压信号，分别提供给过充电流监测模块301，过放电流监测模块302，短路检测模块501，过充电压监测模块401和过放电压监测模块 402(即上述第一基准电压信号与第二基准电压信号相同)，各个模块通过各自内部电路来改变与基准电压信号进行比较的电压值。实际应用中，该基准源X还可以输出5组不同的基准电压信号，分别提供给过充电流监测模块301，过放电流监测模块302，短路检测模块501，过充电压监测模块401和过放电压监测模块402。进一步的，该5组基准信号可以分时提供，例如，在充电过程中，基准源为过充电流监测模块301，和/或过充电压监测模块401提供一基准信号，在放电过程中，基准源为过放电流监测模块302，和/或短路检测模块501，和/或过放电压监测模块402提供另一基准信号，本发明实施例对此不作限定。
上述过充电流监测模块301，过放电流监测模块302，短路检测模块501，过充电压监测模块401和过放电压监测模块402共用同一基准源，这样可以减少基准源的数量，从而减少电池保护芯片中的电路复杂度。
需要说明的是，本发明实施例提供的转换开关60可以为一晶体管，该晶体管的栅极与逻辑控制器20连接，该晶体管的第一极与接地管脚GND连接，第二极与系统接地脚VM连接，其中，第一极为源极，第二极为漏极；或者，第一极为漏极，第二极为源极。该晶体管可以为N沟道金属氧化物场效应晶体管(Metal Oxide Semiconductor，MOS)或PMOS。
进一步的，如图4所示，电池保护芯片还可以包括：上电复位模块80，过温保护模块90和振荡模块100。
上电复位模块80与逻辑控制器20连接。该上电复位模块80用于控制逻辑控制器20进行上电复位，可以保证在为逻辑控制器20加载电压后，该逻辑控制器20初始化至预设的初始状态。
过温保护模块90与逻辑控制器20连接，逻辑控制器20用于根据过温保护模块90的温度检测结果，控制转换开关60的开启或关闭。该过温保护模块90可以为温度传感器，该过温保护模块90在检测到电路中的温度大于预设的温度阈值时(说明未出现温度过高的情况)，向逻辑控制器20输出高电平，逻辑控制器20根据接收到的高电平，可以控制并保持转换开关60开启，使得接地管脚GND和系统接地脚VM之间的电路导通，该过温保护模块90在检测到电路中的温度小于预设的温度阈值时(说明出现温度过高的情况)，逻辑控制器20根据接收到的低电平，可以控制转换开关60关断，使得接地管脚GND和系统接地脚VM之间的电路关断。
示例的，过温保护模块90可以为二极管过温检测电路，该电路利用了二极管导通电压随温度的升高而下降的特性实现，该二极管过温检测电路可以包括二极管和比较器等。
振荡模块100与逻辑控制器20连接。该振荡模块可以为振荡电路，用于产生振荡电信号，该振荡电信号是一种大小和方向都随周期发生变化的电信号，其通常包括高电平和低电平，基于该振荡电信号，逻辑控制器20可以实现对转换开关60的控制。
值的说明的是，本发明实施例中，图1至图4所示的电池保护芯片中还可能设置有其他电子元件，如电容或电阻等，示例的，电流监测模块30和/或短路保护模块50到VM之间的电路上可以设置有电阻，本发明实施例对此不再赘述。
此外，在实际使用中，传统的电池保护模块为了实现供充电保护和过放保护功能，通常至少设置两个3.3*3.3平方毫米(mm2)的MOS管，为了实现驱动控制功能，需要至少设置一个3*4mm2的驱动芯片，因此，这三个器件至少占用了主板约34mm2的面积。
而本发明实施例中，充电保护模块、过放保护模块和短路保护模块分别实现了充电保护、过放保护和短路保护的功能，且逻辑控制器实现了驱动控制功能，这些器件所占用的面积约为4*4＝16mm2，远远小于传统的电池保护模块，目前的小杆电子烟中，主板直径通常为16mm，面积约为200mm2，采用本发明实施例提供的充电保护芯片能够有效减少在主板上的占用面积。
可选地，上述仅以电池保护芯片中设置有短路保护电路为例，实际实现时，在电池保护芯片的性能可以保证的前提下，也可以不设置该短路保护电路。
综上所述，本发明实施例中，由于将电流监测模块、电压监测模块和短路保护模块集成在一个电池保护芯片中，无需分立的多个芯片即可实现现有的电池保护模块的功能，相较于传统电池保护模块，减少了芯片的个数，相应的减少了占用电路板的面积，提高了电路板的散热效率。
本发明实施例提供的一种供电装置，如图5所示，该供电装置包括：充电端口、电池01、电池保护芯片02、第一限流电阻R1、滤波电容C和第二限流电阻R2。
充电端口的电源端与电池01的正极连接，充电端口的接地端与电池保护芯 片02的系统接地脚VM连接，该充电端口用于为电池01充电，该系统接地脚VM接地。其中，充电端口的正极与电池01的正极连接，充电端口的负极与系统接地端VM连接，该系统接地端VM接地。
电池01的正极与电池保护芯片02的电压输入管脚VDD连接，电池01的负极与电池保护芯片上的接地管脚GND连接。
电池01的正极与电池01保护芯片的电压输入管脚VDD之间串联有第一限流电阻R1，该第一限流电阻R1具有限流的作用，其也可以用于滤除电路中的干扰信号，防止前级电路对后级电路的干扰，其阻值可以为100欧姆(R)或者240欧(Ω)。
滤波电容C的两端分别与电池01的正极和负极连接，该滤波电容C用于为电池保护芯片提供稳定的工作电压，其电容大小可以为0.1微法拉(μF)。
第二限流电阻R2的一端与电池01的负极连接，另一端接地，该第二限流电阻R2具有限流的作用。
需要说明的是，上述电池保护芯片可以有多个管脚，图5假设其管脚3、6、9、12均为电压输入管脚VDD，管脚1、2、4、5、7、8、10、11均为接地管脚GND，实际应用中，其管脚分布还可以有其他方式，本发明实施例不做赘述。
综上所述，本发明实施例提供一种供电装置，该供电装置中将电流监测模块、电压监测模块和短路保护模块集成在一个电池保护芯片中，无需分立的多个芯片即可实现现有的电池保护模块的功能，相较于传统电池保护模块，减少了芯片的个数，相应的减少了占用电路板的面积，提高了电路板的散热效率。
本发明实施例还提供了一种电子烟，该电子烟可以包括如图5所示的供电装置以及雾化器，该供电装置用于向该雾化器供电。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该电池保护芯片的实施例中进行了详细描述，此处将不做详细阐述说明。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明的其它实施方案。本申请旨在涵盖本发明的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本发明未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性 的，本发明的真正范围和精神由权利要求指出。
应当理解的是，本发明并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。

Claims (13)

  1. 一种电池保护芯片，其特征在于，包括：
    主板，以及，集成在所述主板上的逻辑控制器、电流监测模块、电压监测模块和转换开关，所述主板还包括电压输入管脚、接地管脚和系统接地脚；
    所述电流监测模块分别与所述逻辑控制器和所述系统接地脚连接，所述电压监测模块分别与所述逻辑控制器和所述电压输入管脚连接；
    所述转换开关串联在所述接地管脚和所述系统接地脚之间，所述逻辑控制器与所述转换开关连接；
    所述逻辑控制器用于根据所述电流监测模块、所述电压监测模块和所述短路保护模块中的至少一个模块对电路的检测结果，控制所述转换开关的开启或关闭。
  2. 根据权利要求1所述的电池保护芯片，其特征在于，所述电池保护芯片还包括集成在所述主板上的短路保护模块，所述短路保护模块分别与所述逻辑控制器和所述系统接地脚连接。
  3. 根据权利要求1所述的电池保护芯片，其特征在于，所述电流监测模块包括：过充电流监测模块，过放电流监测模块，以及为所述过充电流监测模块提供基准电压信号的第一基准源和为所述过放电流监测模块提供基准电压信号的第二基准源；
    所述电压监测模块包括：过充电压监测模块，过放电压监测模块，以及为所述过充电压监测模块提供基准电压信号的第三基准源和为所述过放电压监测模块提供基准电压信号的第四基准源。
  4. 根据权利要求3所述的电池保护芯片，其特征在于，所述电池保护芯片还包括集成在所述主板上的短路保护模块，所述短路保护模块包括：短路检测模块，以及为所述短路检测模块提供基准电压信号的第五基准源。
  5. 根据权利要求1所述的电池保护芯片，其特征在于，
    所述电流监测模块包括：过充电流监测模块和过放电流监测模块；
    所述电压监测模块包括：过充电压监测模块和过放电压监测模块；
    所述电池保护芯片还包括：基准源，所述基准源用于为所述过充电流监测模块和所述过放电流监测模块提供第一基准电压信号，以及为所述过充电压监测模块和所述过放电压监测模块提供第二基准电压信号。
  6. 根据权利要求5所述的电池保护芯片，其特征在于，所述电池保护芯片还包括集成在所述主板上的短路保护模块，所述短路保护模块包括：短路检测模块，所述基准源还用于为所述短路检测模块提供所述第一基准电压信号。
  7. 根据权利要求1至6任一所述的电池保护芯片，其特征在于，所述电池保护芯片还包括：
    上电复位模块，所述上电复位模块与所述逻辑控制器连接。
  8. 根据权利要求1至6任一所述的电池保护芯片，其特征在于，所述电池保护芯片还包括：
    过温保护模块，所述过温保护模块与所述逻辑控制器连接，所述逻辑控制器用于根据所述过温保护模块的温度检测结果，控制所述转换开关的开启或关闭。
  9. 根据权利要求1所述的电池保护芯片，其特征在于，所述电池保护芯片还包括：
    振荡模块，所述振荡模块与所述逻辑控制器连接。
  10. 根据权利要求3或5所述的电池保护芯片，其特征在于，所述电池保护芯片还包括：
    电压分配器，所述电压分配器用于为所述过充电压监测模块与所述过放电压监测模块分配测量电压。
  11. 一种供电装置，其特征在于，所述供电装置包括：
    如权利要求1至10任一所述的电池保护芯片。
  12. 根据权利要求11所述的供电装置，其特征在于，所述供电装置还包括：充电端口、电池、第一限流电阻、滤波电容和第二限流电阻；
    所述充电端口的电源端与所述电池的正极连接，所述充电端口的接地端与所述电池保护芯片的系统接地脚连接，所述充电端口用于为所述电池充电，所述系统接地脚接地；
    所述电池的正极与所述电池保护芯片的电压输入管脚连接，所述电池的负极与所述电池保护芯片上的接地管脚连接；
    所述电池的正极与所述电池保护芯片的电压输入管脚之间串联有第一限流电阻；
    所述滤波电容的两端分别与所述电池的正极和负极连接；
    所述第二限流电阻的一端与所述电池的负极连接，另一端接地。
  13. 一种电子烟，其特征在于，所述电子烟包括：
    如权利要求11或12所述的供电装置，以及雾化器，所述供电装置用于向所述雾化器供电。
PCT/CN2017/115021 2017-08-10 2017-12-07 电池保护芯片、供电装置及电子烟 WO2019029069A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710682497.3A CN109390992A (zh) 2017-08-10 2017-08-10 电池保护芯片、供电装置及电子烟
CN201710682497.3 2017-08-10

Publications (1)

Publication Number Publication Date
WO2019029069A1 true WO2019029069A1 (zh) 2019-02-14

Family

ID=65273269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/115021 WO2019029069A1 (zh) 2017-08-10 2017-12-07 电池保护芯片、供电装置及电子烟

Country Status (2)

Country Link
CN (1) CN109390992A (zh)
WO (1) WO2019029069A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113303505A (zh) * 2021-05-19 2021-08-27 西安稳先半导体科技有限责任公司 一种烟杆、电子烟
CN113303506A (zh) * 2021-05-19 2021-08-27 西安稳先半导体科技有限责任公司 一种烟杆、电子烟

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022042708A1 (zh) * 2020-08-27 2022-03-03 西安稳先半导体科技有限责任公司 一种片上系统、电池组件、电子装置、电池保护电路、测试子系统、测试系统、蓝牙耳机、船运模式设置方法及计算机可读存储介质
CN112271772B (zh) * 2020-10-15 2022-02-22 西安稳先半导体科技有限责任公司 电池保护电路、电池组件、测试系统及电子装置
CN112636308B (zh) * 2020-12-10 2022-12-27 广州极飞科技股份有限公司 电池短路保护方法、装置、系统、电池和存储介质
CN114209094B (zh) * 2021-12-30 2024-04-26 西安稳先半导体科技有限责任公司 一种电池保护电路、电池组件及电子烟
CN114376270B (zh) * 2021-12-30 2024-04-26 西安稳先半导体科技有限责任公司 一种电池保护电路、电池组件及电子烟

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030099075A1 (en) * 2001-11-29 2003-05-29 Dialog Semiconductor Gmbh Charge/discharge protection circuit
CN203103929U (zh) * 2012-12-24 2013-07-31 泉州豪杰信息科技发展有限公司 锂电池保护电路
CN203387167U (zh) * 2013-07-12 2014-01-08 天津市沣文科技发展有限公司 电池保护电路
CN106026222A (zh) * 2016-05-16 2016-10-12 深圳市乐祺微电子科技有限公司 一种动力电池管理控制集成电路
CN207010317U (zh) * 2017-08-10 2018-02-13 常州市派腾电子技术服务有限公司 电池保护芯片、供电装置及电子烟

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1877946B (zh) * 2005-07-01 2011-05-18 曹先国 充电电池保护芯片
CN103457314B (zh) * 2013-07-04 2016-12-28 深圳市金誉半导体有限公司 一种开关型单节锂电池充电和升压放电控制芯片
CN105553052A (zh) * 2016-03-04 2016-05-04 深圳卓锐思创科技有限公司 集成功率mosfet的锂电池保护芯片及采用该芯片的充电电路

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030099075A1 (en) * 2001-11-29 2003-05-29 Dialog Semiconductor Gmbh Charge/discharge protection circuit
CN203103929U (zh) * 2012-12-24 2013-07-31 泉州豪杰信息科技发展有限公司 锂电池保护电路
CN203387167U (zh) * 2013-07-12 2014-01-08 天津市沣文科技发展有限公司 电池保护电路
CN106026222A (zh) * 2016-05-16 2016-10-12 深圳市乐祺微电子科技有限公司 一种动力电池管理控制集成电路
CN207010317U (zh) * 2017-08-10 2018-02-13 常州市派腾电子技术服务有限公司 电池保护芯片、供电装置及电子烟

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113303505A (zh) * 2021-05-19 2021-08-27 西安稳先半导体科技有限责任公司 一种烟杆、电子烟
CN113303506A (zh) * 2021-05-19 2021-08-27 西安稳先半导体科技有限责任公司 一种烟杆、电子烟
CN113303505B (zh) * 2021-05-19 2024-01-12 西安稳先半导体科技有限责任公司 一种烟杆、电子烟
CN113303506B (zh) * 2021-05-19 2024-01-12 西安稳先半导体科技有限责任公司 一种烟杆、电子烟

Also Published As

Publication number Publication date
CN109390992A (zh) 2019-02-26

Similar Documents

Publication Publication Date Title
WO2019029069A1 (zh) 电池保护芯片、供电装置及电子烟
WO2016119694A1 (zh) 电池保护电路、电能提供装置与电子装置
US20090278501A1 (en) Smart battery protector with impedance compensation
US11925213B2 (en) Output control circuit
CN111987772B (zh) 一种片上系统、电池组件及电子装置
CN111463847A (zh) 电池保护芯片和电池保护板
US8084995B2 (en) Intelligent lithium-battery-activating charging device
JP2002010509A (ja) 充放電制御回路及び二次電池装置
CN111987773B (zh) 一种片上系统、电池组件及电子装置
US11342764B2 (en) Low voltage charging control and protection circuit for electronic cigarette and method of charging the electronic cigarette using the circuit
WO2022194106A1 (zh) 双电池充放电电路及控制方法、电子设备
US11239680B2 (en) Battery charger
WO2022042708A1 (zh) 一种片上系统、电池组件、电子装置、电池保护电路、测试子系统、测试系统、蓝牙耳机、船运模式设置方法及计算机可读存储介质
JP2020505899A (ja) バッテリーパック及びこれを含む電力システム
CN207010317U (zh) 电池保护芯片、供电装置及电子烟
CN107346912B (zh) 一种充放电管理集成ic
TWI697169B (zh) 電子裝置
CN114631650A (zh) 一种电池保护芯片、电池组件及电子烟
CN219436644U (zh) 电池保护电路、电池组件和电子设备
WO2021047361A1 (zh) 控制装置及电子设备
TW201322589A (zh) 智能型電力儲存裝置
TW201701563A (zh) 行動充放電裝置
TW201924221A (zh) 電源重置電路
CN209402181U (zh) 一种电池过放电保护电路、通信设备及电池
CN112889197B (zh) 充电补偿电路及电子装置

Legal Events

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

Ref document number: 17920752

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17920752

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17920752

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 19/08/2020)

122 Ep: pct application non-entry in european phase

Ref document number: 17920752

Country of ref document: EP

Kind code of ref document: A1