WO2020182066A1 - 电池保护电路及电子烟 - Google Patents

电池保护电路及电子烟 Download PDF

Info

Publication number
WO2020182066A1
WO2020182066A1 PCT/CN2020/078112 CN2020078112W WO2020182066A1 WO 2020182066 A1 WO2020182066 A1 WO 2020182066A1 CN 2020078112 W CN2020078112 W CN 2020078112W WO 2020182066 A1 WO2020182066 A1 WO 2020182066A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
chip
charging
battery
protection
Prior art date
Application number
PCT/CN2020/078112
Other languages
English (en)
French (fr)
Inventor
邱伟华
刘魁
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
Priority to EP20770649.0A priority Critical patent/EP3940911A4/en
Publication of WO2020182066A1 publication Critical patent/WO2020182066A1/zh
Priority to US17/472,741 priority patent/US20220006310A1/en

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/90—Arrangements or methods specially adapted for charging batteries thereof
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/50—Control or monitoring
    • A24F40/53—Monitoring, e.g. fault detection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • 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
    • H02J7/00308—Overvoltage protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
    • 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 utility model relates to the field of electronic equipment, in particular to a battery protection circuit and an electronic cigarette.
  • the electronic cigarette is usually provided with a battery assembly that can be repeatedly charged, and a charging circuit for charging the battery assembly.
  • the charging circuit is aging or its own circuit connection is wrong, or the voltage detection terminal of the charging chip fails, etc., the voltage at the charging interface will be too high, which may easily cause the charging chip and the control chip (for example, MCU) to burn out. Cause damage to the battery and fire.
  • the control chip for example, MCU
  • a battery protection circuit in a first aspect, includes a first protection chip, and the first protection chip includes a power input terminal and a power output terminal, wherein:
  • the power input terminal is connected to the voltage bus terminal of the charging interface, and the power output terminal is connected to the battery assembly through a charging circuit;
  • the first protection chip disconnects the circuit connection between the power input terminal and the power output terminal;
  • the first protection chip When the voltage of the power input terminal is less than or equal to the safety threshold, the first protection chip connects the circuit between the power input terminal and the power output terminal.
  • the first protection chip is an ETA7014 chip.
  • the power output terminal is electrically connected to an external power detection terminal of the control chip.
  • the power output terminal is electrically connected to the first terminal of the first current limiting resistor
  • the second terminal of the first current limiting resistor is electrically connected to the external power detection terminal of the control chip
  • the first The second end of the current limiting resistor also passes through the second current limiting resistor to ground.
  • the enable terminal of the first protection chip is connected to the voltage bus terminal of the charging interface through a third current limiting resistor.
  • the feedback terminal of the first protection chip is connected to the voltage bus terminal of the charging interface through a fourth current-limiting resistor, and the feedback terminal of the first protection chip is also grounded through a fifth current-limiting resistor.
  • the charging circuit includes a charging chip and a light emitting diode, wherein:
  • the power output terminal is electrically connected to the charging input terminal of the charging chip, and the charging output terminal of the charging chip is electrically connected to the battery assembly;
  • the power output terminal is also electrically connected with the anode of the light-emitting diode, and the cathode of the light-emitting diode is connected with the charging indicator terminal of the charging chip.
  • the anode of the light emitting diode is connected to the output terminal of the power supply through a sixth current limiting resistor.
  • the voltage bus terminal of the charging interface is grounded through a filter capacitor; and/or,
  • the output terminal of the power supply is grounded through a filter capacitor; and/or,
  • the power input terminal is grounded through a filter capacitor.
  • the battery protection circuit further includes a second protection chip, and the second protection chip includes a power terminal, a ground terminal, a heat dissipation terminal, and a detection terminal, wherein:
  • the power terminal is electrically connected to the charging output terminal of the charging circuit
  • the power terminal is electrically connected to the positive electrode of the battery assembly
  • the ground terminal of the second protection chip is electrically connected to the negative electrode of the battery assembly
  • the heat dissipation terminal of the second protection chip is electrically connected to the second protection
  • the ground terminal of the chip is electrically connected, and the detection terminal of the second protection chip is grounded.
  • an electronic cigarette is provided, the battery protection circuit, charging circuit, battery assembly, and atomizer of the first aspect or any optional implementation of the first aspect of the electronic cigarette, wherein:
  • the battery protection circuit is connected to the power input end of the charging circuit
  • the power output terminal of the charging circuit is connected to the battery assembly
  • the battery assembly is electrically connected to the atomizer, and provides electrical energy to the atomizer.
  • the first protection chip By setting the first protection chip between the voltage bus terminal of the charging interface and the charging circuit, when the voltage of the first protection chip is greater than the safety threshold, the first protection chip disconnects the power input terminal and the power output terminal. When the voltage at the power input terminal is less than or equal to the safety threshold, the first protection chip connects to the circuit between the power input terminal and the power output terminal; solves the problem that the voltage at the charging interface is too high when the charging circuit fails in the related art. It is easy to cause the charging chip and the control chip to burn out, causing battery damage and fire problems; the effect of protecting the battery components is achieved.
  • FIG. 1 is a schematic diagram of the circuit connection of a battery protection circuit 100 provided in an embodiment of the present invention
  • Figure 2 is a schematic diagram of the pins of the control chip provided in an embodiment of the present invention.
  • the present application provides a battery protection circuit 100.
  • the battery protection circuit includes a first protection chip U11.
  • the first protection chip U11 includes a power input terminal 111 and a power output terminal 112, wherein:
  • the power input terminal 111 is connected to the voltage bus terminal 113 of the charging interface J3, and the power output terminal 112 is connected to the battery assembly through the charging circuit 200;
  • the first protection chip U11 disconnects the circuit connection between the power input terminal 111 and the power output terminal 112;
  • the first protection chip U11 connects the circuit between the power input terminal 111 and the power output terminal 112.
  • the current provided by the external power source flows from the voltage bus terminal 113 of the charging interface J3 to the power input terminal 111 of the first protection chip U11; if the voltage of the power input terminal 111 is less than or equal to the safety threshold
  • the first protection chip U11 connects to the circuit between the power input terminal 111 and the power output terminal 112
  • the current provided by the external power source flows from the power output terminal 112 to the charging circuit 200, and the charging circuit 200 then provides current to the battery assembly Recharge.
  • the specific implementation of connecting the power output terminal 112 to the battery assembly through the charging circuit 200 may be as follows: the charging circuit 200 includes a charging chip U2, where the power output terminal 112 is electrically connected to the charging input terminal 211 of the charging chip U2, The charging output terminal 222 of the charging chip U2 is connected to the battery assembly.
  • the first protection chip U11 is an ETA7014 chip, which is a high-voltage 36V overvoltage protection chip.
  • the battery protection circuit 100 provided in the present application adopts the ETA7014 chip with a safety threshold of 36V.
  • the resistance of the ETA7014 chip is very low 35mohm and consumes less power.
  • the ETA7014 chip can respond quickly to input surges. Turn off the switch as a 20v high voltage spike in less than 0.1us stations, reducing the time between the overheating protection circuit detecting exceeding the safety threshold and disconnecting the power input 111 and the power output 112. The reaction time of the circuit reduces the possibility of damage to the battery assembly due to excessive voltage provided by the external power supply.
  • the enable terminal 114 of the first protection chip U11 is connected to the voltage bus terminal 113 of the charging interface J3 through the third current-limiting resistor R51; when the external power source is connected to the charging interface J3, the external power source passes through the charging interface J3
  • the voltage bus terminal 113 provides a high level to the enable terminal 114 of the first protection chip U11 to enable the first protection chip U11, and the enabled first protection chip U11 controls the power input terminal 111 and the power supply according to the voltage of the power input terminal 111
  • the circuit between the output terminals 112 is on and off; when the charging interface J3 is not connected to any external power source, the voltage bus terminal 113 of the charging interface J3 provides a low level to the enable terminal 114 of the first protection chip U11, and the first protection chip U11 is not enabled.
  • the feedback terminal 115 of the first protection chip U11 is connected to the voltage bus terminal 113 of the charging interface J3 through the fourth current-limiting resistor R49, and the feedback terminal 115 of the first protection chip U11 is also grounded through the fifth current-limiting resistor R52 .
  • the pin of the first protection chip U11FB is connected to the voltage bus terminal 113 of the charging interface J3 through the fourth current-limiting resistor R49, and is grounded through the fifth current-limiting resistor R52.
  • the system power terminal VCC of the first protection chip U11 is electrically connected to the voltage bus terminal 113 of the charging interface J3; the ground terminal GND of the first protection chip U11 is grounded.
  • the voltage bus terminal 113 of the charging interface J3 is grounded through the filter capacitor C27.
  • the power output terminal 112 is grounded through a filter capacitor C28.
  • the power input terminal 111 is grounded through a filter capacitor C1.
  • the charging interface J3 involved in this application may be a universal serial bus (Universal Serial Bus, USB).
  • USB Universal Serial Bus
  • the power output terminal 112 is electrically connected to the external power detection terminal 411 of the control chip U1.
  • the specific implementation may be as follows: the power output terminal 112 is electrically connected to the first terminal of the first current limiting resistor R6, and the second terminal of the first current limiting resistor R6 is connected to the external power detection terminal 411 of the control chip U1 (for example, the control chip U1 P0.4/RST/VPP pin) is electrically connected, and the second end of the first current-limiting resistor R6 is also grounded through the second current-limiting resistor R9.
  • the battery protection circuit provided by the present utility model is provided with a first protection chip U11 between the voltage bus terminal 113 of the charging interface J3 and the charging circuit 200.
  • the voltage of the first protection chip U11 at the charging interface J3 When the voltage of the bus terminal 113 is greater than the safety threshold, the first protection chip U11 disconnects the circuit connection between the power input 111 and the power output 112; when the voltage of the power input 111 is less than or equal to the safety threshold, the first protection chip U11 Connect the circuit between the power input 111 and the power output 112; solve the problem that the voltage at the charging interface J3 is too high when the charging circuit 200 fails in the related art, which may easily cause the charging chip and the control chip (for example, MCU) to burn, causing Battery damage and fire problems; to achieve the effect of protecting battery components.
  • MCU Mobility Control chip
  • the charging circuit 200 further includes a light-emitting diode D35, wherein the power output terminal 112 is electrically connected to the anode of the light-emitting diode D35, the cathode of the light-emitting diode D35 is connected to the charging indicator terminal 213 of the charging chip U2, and the light-emitting diode D35 is used for To indicate whether the battery pack is in a charging state.
  • the charging indicator terminal 213 of the charging chip U2 is the charging chip U2 Pin
  • charging chip U2 The pin is connected to the cathode of the light emitting diode D35, and the anode of the light emitting diode D35 is connected to the power output terminal 112.
  • the charging chip U2 outputs a low voltage through the charging indicating terminal 213 during the charging process to light up the light emitting diode D35.
  • the anode of the light emitting diode D35 is connected to the power output terminal 112 through the sixth current limiting resistor R7.
  • the charging circuit also includes a diode, other light-emitting diodes (the light-emitting color is different from the light-emitting diode D35) and a resistor, where:
  • the first end of the resistor is electrically connected to the power output terminal 112, the second end of the resistor is electrically connected to the anode of the diode, and the cathode of the diode is electrically connected to the charging state indicating end; the second end of the resistor is also connected to The anode of the other light-emitting diode is electrically connected, and the cathode of the other light-emitting diode is grounded; the charging chip U2 outputs a low voltage through the charging indicator terminal 213 during the charging process to light up the light-emitting diode D35; the charging chip U2 is in the battery assembly When fully charged, the charging indicating terminal 213 is controlled to be in a high impedance state to light up the other LEDs.
  • the thermal detection terminal of the charging chip U2 in the charging circuit 200 (for example, the NTC pin of the charging chip U2) is connected to the power output terminal 112 of the first protection chip U11 through a current limiting resistor R2; the charging circuit 200 The thermal detection terminal of the charging chip U2 is also grounded through the current limiting resistor R3.
  • the charging current setting terminal of the charging chip U2 (for example, the ISET pin of the charging chip U2) is grounded through a resistor R5; the lighting time setting terminal of the charging chip U2 (for example, the IBF pin of the charging chip U2)
  • the resistance R4 is grounded, and the resistance value of the resistance R5 can be set to set the charging current provided by the charging chip U2 to the battery assembly.
  • the soft-start timing end of the charging chip U2 (for example, the SS pin of the charging chip U2) is grounded through the filter capacitor C4.
  • the charging chip U2 can use the MP2602 chip.
  • the battery protection circuit further includes a second protection chip U15.
  • the second protection chip U15 includes a power terminal 311, a ground terminal 322, a heat dissipation terminal 323 and a detection terminal 324, wherein:
  • the power terminal 311 is electrically connected to the charging output terminal 212 of the charging circuit 200;
  • the power terminal 311 is electrically connected to the positive terminal of the battery assembly
  • the ground terminal 322 of the second protection chip U15 is electrically connected to the negative terminal of the battery assembly
  • the heat dissipation terminal 323 of the second protection chip U15 is electrically connected to the ground terminal 322 of the second protection chip U15.
  • the detection terminal 324 of the second protection chip U15 is grounded.
  • the second protection chip U15 of this embodiment can be used to prevent overcharge or overdischarge of the battery assembly.
  • the ground terminal 322 of the second protection chip U15 is connected to the negative electrode of the battery assembly, and the detection terminal 324 of the second protection chip U15 Grounded, the negative electrode of the battery assembly is not directly grounded.
  • the second protection chip U15 is arranged between the negative electrode of the battery assembly and the system ground. When the battery assembly needs to be charged or discharged, the negative electrode of the battery assembly needs to pass through the second protective chip. U15 is connected to the ground.
  • the second protection chip U15 in the battery protection circuit 100 can determine whether the circuit state is in the overcharge or overdischarge state by detecting the current or voltage on its own pins or components, and then it is in the overcharge or overdischarge state.
  • the over-discharge state disconnects the connection between the negative pole of the battery assembly and the system ground, thereby protecting the battery assembly.
  • the second protection chip U15 determines that the circuit state is in the overcharge or overdischarge state, and controls the disconnection between the negative electrode of the battery and the system ground, thereby disconnecting the connection between the battery assembly and the charging circuit 200 or the discharging circuit, so that the battery is no longer In the intervention circuit, the occurrence of overcharge or overdischarge of the battery assembly is prevented, so as to realize the protection of the battery assembly.
  • the power terminal 311 of the second protection chip U15 is grounded through the filter capacitor C26.
  • the power terminal 311 of the second protection chip U15 receives the system power supply voltage VCC_BAR through the current resistor R25.
  • the second protection chip U15 can adopt the XB6006A2 chip.
  • the electronic cigarette includes a charging circuit 200, a battery assembly, an atomizer, and the battery protection circuit involved in any of the above embodiments, wherein: the battery protection circuit and the power input 111 of the charging circuit 200 The power output 112 of the charging circuit 200 is connected to the battery assembly; the battery assembly is electrically connected to the atomizer, and provides electrical energy to the atomizer.
  • the battery assembly is connected to the atomizer through a load circuit, and an electronic switch U23 is provided in the load circuit.
  • the control terminal of the electronic switch U23 is connected to the output terminal of the control chip U1 in the control circuit (for example, P5 of the control chip U1). .4/BZD/PWM0) electrical connection; when the control chip U1 detects the cigarette lighter signal, it can control the electronic switch U23 to close so that the battery assembly provides power to the atomizer through the load circuit; the control chip U1 can also control the electronic switch U23 is turned on, so that the battery pack stops providing power to the atomizer.
  • control chip U1 is connected to the output end of the microphone MIC.
  • the specific implementation can be as follows: the output end of the microphone MIC is connected to the P0.2/XOUT pin of the control chip U1, and the control chip U1 uses the detected airflow signal sent by the output end of the microphone MIC as a cigarette lighter signal.
  • the atomizer includes a liquid storage cavity for storing smoke liquid and an atomizing component for heating the smoke liquid, and the battery component is electrically connected to the atomizing component through a load circuit.
  • the upper end of the electronic cigarette is also provided with a cigarette holder, the cigarette holder is connected with the atomizing cavity, and the user of the electronic cigarette can smoke through the cigarette holder.
  • the type of the battery assembly can be a lithium battery, a lead-acid battery, an iron-nickel battery, a metal oxide battery, a zinc-silver battery, a zinc-nickel battery, etc., rechargeable batteries that can provide electrical energy.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the defined “first” and “second” features may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, “multiple” means two or more.

Landscapes

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

Abstract

本实用新型公开了一种电池保护电路及电子烟，属于电子设备领域。所述电池保护电路包括第一保护芯片，所述第一保护芯片包括电源输入端、电源输出端，其中：所述电源输入端与充电接口的电压总线端相连接，所述电源输出端通过充电电路与电池组件相连接；所述电源输入端的电压大于安全阈值时，所述第一保护芯片断开电源输入端、所述电源输出端之间的电路连接；所述电源输入端的电压小于或等于所述安全阈值时，所述第一保护芯片接通电源输入端与所述电源输出端之间电路；解决了相关技术中充电电路发生故障时充电接口处电压过高，容易导致充电芯片和控制芯片的烧毁，引起电池损坏和起火的问题。

Description

电池保护电路及电子烟 技术领域
本实用新型涉及电子设备领域，特别涉及一种电池保护电路及电子烟。
背景技术
为便于电子烟的便携使用，电子烟中通常设置有能够反复充电的电池组件，以及用于给电池组件充电的充电电路。
然而，当充电电路因线路老化或本身线路连接出错或充电芯片的电压检测端发生故障等等原因，会造成充电接口处电压过高，容易导致充电芯片和控制芯片(例如，MCU)的烧毁，引起电池损坏和起火。
实用新型内容
为了解决现有技术中充电电路发生故障时充电接口处电压过高，容易导致充电芯片和控制芯片的烧毁，引起电池损坏和起火的问题，本实用新型实施例提供了一种电池保护电路及电子烟。所述技术方案如下：
第一方面，提供了一种电池保护电路，所述电池保护电路包括第一保护芯片，所述第一保护芯片包括电源输入端、电源输出端，其中：
所述电源输入端与充电接口的电压总线端相连接，所述电源输出端通过充电电路与电池组件相连接；
所述电源输入端的电压大于安全阈值时，所述第一保护芯片断开电源输入端、所述电源输出端之间的电路连接；
所述电源输入端的电压小于或等于所述安全阈值时，所述第一保护芯片接通电源输入端与所述电源输出端之间电路。
可选的，所述第一保护芯片为ETA7014芯片。
可选的，所述电源输出端与控制芯片的外部电源检测端电性连接。
可选的，所述电源输出端与第一限流电阻的第一端电性连接，所述第一限流电阻的第二端与控制芯片的外部电源检测端电性连接，所述第一限流电阻的 第二端还通过的第二限流电阻接地。
可选的，所述第一保护芯片的使能端通过第三限流电阻与所述充电接口的电压总线端相连接。
可选的，所述第一保护芯片的反馈端通过第四限流电阻与所述充电接口的电压总线端相连接，所述第一保护芯片的反馈端还通过第五限流电阻接地。
可选的，所述充电电路包括充电芯片和发光二极管，其中：
所述电源输出端与充电芯片的充电输入端电性连接，所述充电芯片的充电输出端与电池组件电性连接；
所述电源输出端还与所述发光二极管的阳极电性连接，所述发光二极管的阴极与充电芯片的充电指示端相连接。
可选的，所述发光二极管的阳极通过第六限流电阻与所述电源输出端相连接。
可选的，所述充电接口的电压总线端通过滤波电容接地；和/或，
所述电源输出端通过滤波电容接地；和/或，
所述电源输入端通过滤波电容接地。
可选的，所述电池保护电路还包括第二保护芯片，所述第二保护芯片包括电源端、接地端、散热端和检测端，其中：
所述电源端与充电电路的充电输出端电性连接；
所述电源端与所述电池组件的正极电性连接，所述第二保护芯片的接地端与所述电池组件的负极电性连接，所述第二保护芯片的散热端与所述第二保护芯片的接地端电性连接，所述第二保护芯片的检测端接地。
第二方面，提供了一种电子烟，所述电子烟上述第一方面或第一方面任一可选实施方式所涉及的电池保护电路、充电电路、电池组件、雾化器，其中：
所述电池保护电路与所述充电电路的电源输入端相连接；
所述充电电路的电源输出端与所述电池组件相连接；
所述电池组件与所述雾化器电性连接，以及向所述雾化器提供电能。
本实用新型实施例提供的技术方案带来的有益效果是：
通过在充电接口的电压总线端与充电电路之间设置第一保护芯片，第一保护芯片在充电接口的电压总线端的电压大于安全阈值时，第一保护芯片断开电源输入端、电源输出端之间的电路连接；电源输入端的电压小于或等于安全阈 值时，第一保护芯片接通电源输入端与电源输出端之间电路；解决了相关技术中充电电路发生故障时充电接口处电压过高，容易导致充电芯片和控制芯片的烧毁，引起电池损坏和起火的问题；达到了保护电池组件的效果。
附图说明
为了更清楚地说明本实用新型实施例中的技术方案，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实用新型的一些实施例，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是本实用新型一个实施例中提供的电池保护电路100的电路连接示意图；
图2是本实用新型一个实施例中提供的控制芯片的引脚示意图。
具体实施方式
为使本实用新型的目的、技术方案和优点更加清楚，下面将结合附图对本实用新型实施方式作进一步地详细描述。
请参考图1，本申请提供了一种电池保护电路100，该电池保护电路包括第一保护芯片U11，第一保护芯片U11包括电源输入端111、电源输出端112，其中：
电源输入端111与充电接口J3的电压总线端113相连接，电源输出端112通过充电电路200与电池组件相连接；
电源输入端111的电压大于安全阈值时，第一保护芯片U11断开电源输入端111、电源输出端112之间的电路连接；
电源输入端111的电压小于或等于安全阈值时，第一保护芯片U11接通电源输入端111与电源输出端112之间电路。
其中，充电接口J3与外部电源相连接时，外部电源提供的电流从充电接口J3的电压总线端113流向第一保护芯片U11的电源输入端111；如果电源输入端111的电压小于或等于安全阈值时，第一保护芯片U11接通电源输入端111与电源输出端112之间电路，使外部电源提供的电流从电源输出端112流向充 电电路200，充电电路200再向电池组件提供电流给电池组件充电。
可选的，电源输出端112通过充电电路200与电池组件相连接的具体实现可以为：充电电路200包括充电芯片U2，其中：电源输出端112与充电芯片U2的充电输入端211电性连接，充电芯片U2的充电输出端222与电池组件相连接。
可选的，第一保护芯片U11为ETA7014芯片，为高电压36V过压保护芯片，可见本申请所提供的电池保护电路100在采用ETA7014芯片时安全阈值为36V。其中，ETA7014芯片的电阻很低35mohm，消耗的电能少。ETA7014芯片可以输入浪涌的反应很快，关闭开关在不到0.1us站作为20v高电压尖峰，减少了过热保护电路检测到超过安全阈值至断开电源输入端111、电源输出端112之间的电路的反应时间，降低电池组件因外接电源提供的电压过大损坏电池组件的可能性。
可选的，第一保护芯片U11的使能端114通过第三限流电阻R51与充电接口J3的电压总线端113相连接；当外部电源连接至充电接口J3时，外部电源通过充电接口J3的电压总线端113向第一保护芯片U11的使能端114提供高电平，使能第一保护芯片U11，使能的第一保护芯片U11根据电源输入端111的电压控制电源输入端111、电源输出端112之间的电路通断；充电接口J3未与任何外部电源相连接时，充电接口J3的电压总线端113向第一保护芯片U11的使能端114提供低电平，未使能第一保护芯片U11。
可选的，第一保护芯片U11的反馈端115通过第四限流电阻R49与充电接口J3的电压总线端113相连接，第一保护芯片U11的反馈端115还通过第五限流电阻R52接地。举例来讲，如图1所述，第一保护芯片U11FB引脚通过第四限流电阻R49与充电接口J3的电压总线端113相连接，且通过第五限流电阻R52接地。
可选的，第一保护芯片U11的***电源端VCC与充电接口J3的电压总线端113电性连接；第一保护芯片U11的接地端GND接地。
可选的，充电接口J3的电压总线端113通过滤波电容C27接地。
可选的，电源输出端112通过滤波电容C28接地。
可选的，电源输入端111通过滤波电容C1接地。
可选的，本申请所涉及的充电接口J3可以为通用串行总线(Universal Serial Bus，USB)。
可选的，请参考图1以及图2，电源输出端112与控制芯片U1的外部电源检测端411电性连接。具体实现可以为：电源输出端112与第一限流电阻R6的第一端电性连接，第一限流电阻R6的第二端与控制芯片U1的外部电源检测端411(例如，控制芯片U1的P0.4/RST/VPP引脚)电性连接，第一限流电阻R6的第二端还通过的第二限流电阻R9接地。
综上所述，本实用新型提供的一种电池保护电路，通过在充电接口J3的电压总线端113与充电电路200之间设置第一保护芯片U11，第一保护芯片U11在充电接口J3的电压总线端113的电压大于安全阈值时，第一保护芯片U11断开电源输入端111、电源输出端112之间的电路连接；电源输入端111的电压小于或等于安全阈值时，第一保护芯片U11接通电源输入端111与电源输出端112之间电路；解决了相关技术中充电电路200发生故障时充电接口J3处电压过高，容易导致充电芯片和控制芯片(例如，MCU)的烧毁，引起电池损坏和起火的问题；达到了保护电池组件的效果。
可选的，充电电路200还包括发光二极管D35，其中：电源输出端112与发光二极管D35的阳极电性连接，发光二极管D35的阴极与充电芯片U2的充电指示端213相连接，发光二极管D35用于指示电池组件是否处于充电状态。举例来讲，充电芯片U2的充电指示端213为充电芯片U2的
Figure PCTCN2020078112-appb-000001
引脚，充电芯片U2的
Figure PCTCN2020078112-appb-000002
引脚与发光二极管D35的阴极相连接，发光二极管D35的阳极与电源输出端112相连接。
具体的，充电芯片U2在充电过程中通过充电指示端213输出低电压，以点亮发光二极管D35。
可选的，发光二极管D35的阳极通过第六限流电阻R7与电源输出端112相连接。
可选的，充电电路还包括二极管、其他发光二极管(发光颜色不同于发光二极管D35)和一个电阻，其中：
该电阻的第一端与电源输出端112电连接，该电阻的第二端与该二极管的阳极电连接，该二极管的阴极与该充电状态指示端电连接；该电阻的该第二端还与该其他发光二极管的阳极电连接，该其他发光二极管的阴极接地；该充电芯片U2在充电过程中通过该充电指示端213输出低电压，以点亮该发光二极管 D35；该充电芯片U2在电池组件充满电时控制该充电指示端213呈高阻态，以点亮该其他发光二极管。
可选的，充电电路200中的充电芯片U2的热敏检测端(例如，充电芯片U2的NTC引脚)通过限流电阻R2与第一保护芯片U11的电源输出端112相连接；充电电路200中的充电芯片U2的热敏检测端还通过限流电阻R3接地。
可选的，充电芯片U2的充电电流设定端(例如，充电芯片U2的ISET引脚)通过电阻R5接地；充电芯片U2的亮灯时间设定端(例如，充电芯片U2的IBF引脚)通过电阻R4接地，通过设定电阻R5的阻值能够设定充电芯片U2向电池组件提供的充电电流。
可选的，充电芯片U2的软启动定时端(例如，充电芯片U2的SS引脚)通过滤波电容C4接地。
在实际实现时，充电芯片U2可采用MP2602芯片。
可选的，电池保护电路还包括第二保护芯片U15，第二保护芯片U15包括电源端311、接地端322、散热端323和检测端324，其中：
电源端311与充电电路200的充电输出端212电性连接；
电源端311与电池组件的正极电性连接，第二保护芯片U15的接地端322与电池组件的负极电性连接，第二保护芯片U15的散热端323与第二保护芯片U15的接地端322电性连接，第二保护芯片U15的检测端324接地。
具体地，本实施例的第二保护芯片U15可以用于防止电池组件的过充或过放电，第二保护芯片U15的接地端322与电池组件的负极相连，第二保护芯片U15的检测端324接地，则电池组件的负极不直接接地，第二保护芯片U15设置在电池组件的负极于***地之间，而电池组件需要充电或放电时，需要电池组件的负极通过导通的第二保护芯片U15与地相连，因此，电池保护电路100内的第二保护芯片U15可通过检测自身的管脚或元件上的电流或电压，判断电路状态是否处于过充或过放电状态，进而在过充或过放电状态断开电池组件的负极与***地之间的连接，从而可以保护电池组件。具体地，第二保护芯片U15在判断电路状态处于过充或过放电状态，控制电池负极与***地之间断开，从而断开电池组件与充电电路200或放电电路间的连接，使得电池不再介入电路 中，防止了对电池组件的过充或过放电的发生，从而实现对电池组件的保护。
可选的，第二保护芯片U15的电源端311通过滤波电容C26接地。
可选的，第二保护芯片U15的电源端311通过电流电阻R25接收***供电电压VCC_BAR。
在实际实现时，第二保护芯片U15可以采用XB6006A2芯片。
本申请提供了一种电子烟，该电子烟包括充电电路200、电池组件、雾化器以及上述任一实施例所涉及的电池保护电路，其中：电池保护电路与充电电路200的电源输入端111相连接；充电电路200的电源输出端112与电池组件相连接；电池组件与雾化器电性连接，以及向雾化器提供电能。
可选的，电池组件通过负载电路与雾化器相连接，负载电路中设置有电子开关U23，该电子开关U23的控制端与控制电路内控制芯片U1的输出端(例如，控制芯片U1的P5.4/BZD/PWM0)电连接；控制芯片U1在检测到点烟信号时，可控制该电子开关U23闭合使电池组件通过负载电路向雾化器提供电能；控制芯片U1还可控制该电子开关U23打开，使电池组件停止向雾化器提供电能。
具体的，控制芯片U1与咪头MIC的输出端相连接。具体实现可以为：咪头MIC的输出端与控制芯片U1的P0.2/XOUT引脚相连接，控制芯片U1将检测到的咪头MIC的输出端发送的气流信号作为点烟信号。
可选的，雾化器包括用于存储烟液的储液腔以及用于加热烟液的雾化组件，电池组件通过负载电路与雾化组件电性连接。可选的，电子烟的上端还设置有烟嘴，烟嘴与雾化腔连通，电子烟用户可通过烟嘴进行抽吸。
在本实用新型实施例中，电池组件的类型可以为锂电池、铅酸蓄电池、铁镍蓄电池、金属氧化物蓄电池、锌银蓄电池、锌镍蓄电池等等能提供电能的可充电电池。
术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或隐含所指示的技术特征的数量。由此，限定的“第一”、“第二”的特征可以明示或隐含地包括一个或者更多个该特征。在本实用新型的描述中，除非另有说明，“多个”的含义是两个或两个以上。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过 硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本实用新型的较佳实施例，并不用以限制本实用新型，凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。

Claims (11)

  1. 一种电池保护电路，其特征在于，所述电池保护电路(100)包括第一保护芯片(U11)，所述第一保护芯片(U11)包括电源输入端(111)、电源输出端(112)，其中：
    所述电源输入端(111)与充电接口(J3)的电压总线端(113)相连接，所述电源输出端(112)通过充电电路(200)与电池组件相连接；
    所述电源输入端(111)的电压大于安全阈值时，所述第一保护芯片(U11)断开电源输入端(111)、所述电源输出端(112)之间的电路连接；
    所述电源输入端(111)的电压小于或等于所述安全阈值时，所述第一保护芯片(U11)接通电源输入端(111)与所述电源输出端(112)之间电路。
  2. 根据权利要求1所述的电池保护电路，其特征在于，所述第一保护芯片(U11)为ETA7014芯片。
  3. 根据权利要求1所述的电池保护电路，其特征在于，所述电源输出端(112)与控制芯片(U1)的外部电源检测端(411)电性连接。
  4. 根据权利要求3所述的电池保护电路，其特征在于，所述电源输出端(112)与第一限流电阻(R6)的第一端电性连接，所述第一限流电阻(R6)的第二端与控制芯片(U1)的外部电源检测端(411)电性连接，所述第一限流电阻(R6)的第二端还通过的第二限流电阻(R9)接地。
  5. 根据权利要求1所述的电池保护电路，其特征在于，所述第一保护芯片(U11)的使能端(114)通过第三限流电阻(R51)与所述充电接口(J3)的电压总线端(113)相连接。
  6. 根据权利要求1所述的电池保护电路，其特征在于，所述第一保护芯片(U11)的反馈端(115)通过第四限流电阻(R49)与所述充电接口(J3)的电压总线端(113)相连接，所述第一保护芯片(U11)的反馈端(115)还通过第 五限流电阻(R52)接地。
  7. 根据权利要求1所述的电池保护电路，其特征在于，所述充电电路(200)包括充电芯片(U2)和发光二极管(D35)，其中：
    所述电源输出端(112)与充电芯片(U2)的充电输入端(211)电性连接，所述充电芯片(U2)的充电输出端(212)与电池组件电性连接；
    所述电源输出端(112)还与所述发光二极管(D35)的阳极电性连接，所述发光二极管(D35)的阴极与充电芯片(U2)的充电指示端(213)相连接。
  8. 根据权利要求7所述的电池保护电路，其特征在于，所述发光二极管(D35)的阳极通过第六限流电阻(R7)与所述电源输出端(112)相连接。
  9. 根据权利要求1所述的电池保护电路，其特征在于，
    所述充电接口(J3)的电压总线端(113)通过滤波电容(C27)接地；和/或，
    所述电源输出端(112)通过滤波电容(C28)接地；和/或，
    所述电源输入端(111)通过滤波电容(C1)接地。
  10. 根据权利要求1所述的电池保护电路，其特征在于，所述电池保护电路(100)还包括第二保护芯片(U15)，所述第二保护芯片(U15)包括电源端(311)、接地端(322)、散热端(323)和检测端(324)，其中：
    所述电源端(311)与充电电路(200)的充电输出端(212)电性连接；
    所述电源端(311)与所述电池组件的正极电性连接，所述第二保护芯片(U15)的接地端(322)与所述电池组件的负极电性连接，所述第二保护芯片(U15)的散热端(323)与所述第二保护芯片(U15)的接地端(322)电性连接，所述第二保护芯片(U15)的检测端(324)接地。
  11. 一种电子烟，其特征在于，所述电子烟包括如权利要求1至10中任一所述的电池保护电路(100)、充电电路(200)、电池组件、雾化器，其中：
    所述电池保护电路(100)与所述充电电路(200)的电源输入端(111)相 连接；
    所述充电电路(200)的电源输出端(112)与所述电池组件相连接；
    所述电池组件与所述雾化器电性连接，以及向所述雾化器提供电能。
PCT/CN2020/078112 2019-03-13 2020-03-06 电池保护电路及电子烟 WO2020182066A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20770649.0A EP3940911A4 (en) 2019-03-13 2020-03-06 BATTERY PROTECTION CIRCUIT AND ELECTRONIC CIGARETTE
US17/472,741 US20220006310A1 (en) 2019-03-13 2021-09-13 Battery protection circuit and electronic cigarette

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201920315437.2 2019-03-13
CN201920315437.2U CN210129732U (zh) 2019-03-13 2019-03-13 电池保护电路及电子烟

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/472,741 Continuation-In-Part US20220006310A1 (en) 2019-03-13 2021-09-13 Battery protection circuit and electronic cigarette

Publications (1)

Publication Number Publication Date
WO2020182066A1 true WO2020182066A1 (zh) 2020-09-17

Family

ID=69660151

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/078112 WO2020182066A1 (zh) 2019-03-13 2020-03-06 电池保护电路及电子烟

Country Status (4)

Country Link
US (1) US20220006310A1 (zh)
EP (1) EP3940911A4 (zh)
CN (1) CN210129732U (zh)
WO (1) WO2020182066A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103368144A (zh) * 2012-04-06 2013-10-23 深圳富泰宏精密工业有限公司 过压保护电路
CN206865186U (zh) * 2017-06-12 2018-01-09 常州市派腾电子技术服务有限公司 充电电路及电子烟
CN207530530U (zh) * 2017-11-15 2018-06-22 维沃移动通信有限公司 一种电池保护电路及电子设备
CN208241335U (zh) * 2018-03-05 2018-12-14 常州市派腾电子技术服务有限公司 电池保护电路及电子烟

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104348141B (zh) * 2013-07-31 2018-08-14 惠州市吉瑞科技有限公司 一种用于电子烟的过流过压保护电路及方法
CN203504217U (zh) * 2013-09-10 2014-03-26 向智勇 一种电子烟盒
CN209329677U (zh) * 2019-01-15 2019-08-30 常州市派腾电子技术服务有限公司 过热保护电路、电子烟及电子设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103368144A (zh) * 2012-04-06 2013-10-23 深圳富泰宏精密工业有限公司 过压保护电路
CN206865186U (zh) * 2017-06-12 2018-01-09 常州市派腾电子技术服务有限公司 充电电路及电子烟
CN207530530U (zh) * 2017-11-15 2018-06-22 维沃移动通信有限公司 一种电池保护电路及电子设备
CN208241335U (zh) * 2018-03-05 2018-12-14 常州市派腾电子技术服务有限公司 电池保护电路及电子烟

Also Published As

Publication number Publication date
EP3940911A4 (en) 2022-12-14
CN210129732U (zh) 2020-03-06
EP3940911A1 (en) 2022-01-19
US20220006310A1 (en) 2022-01-06

Similar Documents

Publication Publication Date Title
WO2015172710A1 (zh) 电池防爆电路、充电电路以及充、放电保护电路
TWI539720B (zh) 具有低功耗狀態自動喚醒功能的動力電池組管理系統
CN203326666U (zh) 可防止充电电源反接的充电电路
WO2019169968A1 (zh) 电池保护电路及电子烟
US20200221780A1 (en) Overheat protection circuit, electronic cigarette and electronic equipment
CN203259822U (zh) 带声响提示功能的电子烟控制电路
CN103117536B (zh) 一种蓄电池保护电路
WO2021103101A1 (zh) 双路供电装置的供电方法
CN107346912B (zh) 一种充放电管理集成ic
WO2020063390A1 (zh) 快充电路以及电子烟
CN112821504B (zh) 一种应急启动电源
WO2020182066A1 (zh) 电池保护电路及电子烟
CN203827020U (zh) 一种具有过充保护的电动车锂电池充电器
CN103326433A (zh) 便携式设备供电控制电路及便携式监护仪
CN2174006Y (zh) 多功能充电装置
CN113078723B (zh) 双向快充快放二合一电源
WO2021103102A1 (zh) 双路供电装置及供电***
CN218449554U (zh) 一种手机充电器的过压充电保护电路结构
CN204559984U (zh) 一种应急灯电路
WO2019047434A1 (zh) 一种充电电路和充电装置
WO2023056650A1 (zh) 充放电保护装置和启动电源设备
CN204179721U (zh) 一种助听器电路
CN220306972U (zh) 一种电池保护电路和气溶胶生成装置
CN220605582U (zh) 一种可缩短机器开机时间的充电电路与智能终端
CN215982666U (zh) 一种电弧打火机

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: 20770649

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2020770649

Country of ref document: EP

Effective date: 20211013