WO2019169968A1 - 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
WO2019169968A1
WO2019169968A1 PCT/CN2019/073115 CN2019073115W WO2019169968A1 WO 2019169968 A1 WO2019169968 A1 WO 2019169968A1 CN 2019073115 W CN2019073115 W CN 2019073115W WO 2019169968 A1 WO2019169968 A1 WO 2019169968A1
Authority
WO
WIPO (PCT)
Prior art keywords
chip
battery
charging
protection
resistor
Prior art date
Application number
PCT/CN2019/073115
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 WO2019169968A1 publication Critical patent/WO2019169968A1/zh

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
    • 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

Definitions

  • the utility model relates to the field of electronic equipment, in particular to a battery protection circuit and an electronic cigarette.
  • the use of various functions of the electronic cigarette is inseparable from the power supply of the battery.
  • the charging circuit is aging due to the aging of the line or the connection of the line itself, an input or output short circuit may occur, thereby causing a direct voltage on the charging interface, for example, during charging.
  • the battery is over-charged, or the battery is short-circuited with positive and negative terminals to form a current output that is too large, causing damage or fire.
  • the charging circuit needs to be modified to protect the battery.
  • the utility model provides a battery protection circuit and an electronic cigarette, which can solve the problem of overcharging or overdischarging of the battery.
  • the utility model discloses a battery protection circuit, which comprises a first protection chip, the first protection chip comprises an overcurrent detection end and a power output end, and the overcurrent detection end of the first protection chip is connected with the charging circuit, Connected to the system power supply terminal _, the power output end of the first protection chip is connected to the positive pole of the battery, and the negative pole of the battery is grounded.
  • the first protection chip further includes a ground end and an internal power supply end, the ground end of the first protection chip is grounded, and the internal power supply end of the first protection chip and the first filter capacitor are One end is connected, and the second end of the first filter capacitor is grounded.
  • the battery protection circuit further includes a second protection chip
  • the second protection chip includes a power terminal, a ground terminal, an exposed pad terminal, and a detection terminal
  • the power supply terminal of the second protection chip is The anode of the battery is connected, the ground of the second protection chip is connected to the cathode of the battery, and the exposed pad end of the second protection chip is connected to the ground of the second protection chip.
  • the detection terminal of the second protection chip is grounded.
  • the battery protection circuit includes a protection resistor, a first end of the protection resistor is connected to a power supply end of the second protection chip, and a second end of the protection resistor is opposite to a positive electrode of the battery Connected.
  • the battery protection circuit includes a second filter capacitor, a first end of the second filter capacitor is connected to a power end of the second protection chip, and a second end of the second filter capacitor Connected to the negative electrode of the battery.
  • the utility model provides an electronic cigarette, which comprises the above battery protection circuit.
  • the electronic cigarette further includes a charging circuit
  • the charging circuit includes a charging chip, a brightness setting resistor, a lamp, a first voltage dividing resistor, a second voltage dividing resistor, a third filter capacitor, and a first Time resistance, second time resistance.
  • the charging chip includes a power input end, a charging indicating end, a thermal detecting end, a soft start timing end, a lighting time setting end, a charging current setting end, and a charging output end, and the power input end and the external part of the charging chip
  • the power source is connected, and the charging output end of the charging chip is connected to the overcurrent detecting end of the first protection chip.
  • the first end of the brightness setting resistor is connected to a power input end of the charging chip.
  • a positive pole of the lamp is coupled to a second end of the brightness setting resistor, and a negative pole of the lamp is coupled to a charge indicating end of the charging chip.
  • the first end of the first voltage dividing resistor is connected to the power input end of the charging chip, and the second end of the first voltage dividing resistor is connected to the thermal detecting end of the charging chip.
  • the first end of the second voltage dividing resistor is connected to the second end of the first voltage dividing resistor, and the second end of the second voltage dividing resistor is grounded.
  • the first end of the third filter capacitor is connected to the soft start timing end of the charging chip, and the second end of the third filter capacitor is grounded.
  • the first end of the first time resistor is connected to the lighting time setting end of the charging chip, and the second end of the first time resistor is grounded.
  • the first end of the second time resistor is connected to the charging current setting end of the charging chip, and the second end of the second time resistor is grounded.
  • the charging circuit includes a third voltage dividing resistor and a fourth voltage dividing resistor.
  • the first end of the third voltage dividing resistor is connected to the external power source, and the second end of the third voltage dividing resistor is connected to the interface detecting end _ of the main control circuit.
  • the first end of the fourth voltage dividing resistor is connected to the second end of the third voltage dividing resistor, and the second end of the fourth voltage dividing resistor is grounded.
  • the charging circuit includes a fourth filter capacitor, a first end of the fourth filter capacitor is connected to the external power source, and a second end of the fourth filter capacitor is grounded.
  • the charging circuit includes a fifth filter capacitor, a first end of the fifth filter capacitor is connected to the external power source, and a second end of the fifth filter capacitor is grounded.
  • the utility model provides a battery protection circuit and an electronic cigarette.
  • the first protection chip in the battery protection circuit automatically disconnects the connection between the charging circuit and the battery, thereby preventing the occurrence of overcharging or overdischarging of the battery, thereby protecting The battery and the electronic cigarette.
  • FIG. 1 is a circuit connection diagram of a battery protection circuit 100 according to a first embodiment of the present invention
  • FIG. 2 is a circuit connection diagram of a battery protection circuit 100 according to a second embodiment of the present invention.
  • Fig. 3 is a circuit connection diagram of an electronic cigarette according to a third embodiment of the present invention.
  • the battery protection circuit 100 of the present embodiment includes a first protection chip U1.
  • the first protection chip U1 includes an overcurrent detection terminal 111 and a power output terminal 112.
  • the overcurrent detection terminal 111 of the first protection chip U1 is
  • the charging circuit 200 is connected to the system power supply terminal VCC_BAR.
  • the power output terminal 112 of the first protection chip U1 is connected to the positive electrode of the battery 300, and the negative electrode of the battery 300 is grounded.
  • the battery 300 in this embodiment may be a lithium battery, a nickel-hydrogen battery, or a nickel-chromium battery. Of course, other types of rechargeable batteries may be used, and details are not described herein.
  • the battery protection circuit 100 includes a first protection chip U1.
  • the overcurrent detection terminal 111 of the first protection chip U1 is connected to the charging circuit 200.
  • the power output terminal 112 of the first protection chip U1 is connected to the positive electrode of the battery 300.
  • the negative electrode is grounded, and when the battery 300 is charged, the charging circuit 200 must pass through the battery protection circuit 100 to charge the battery 300. Therefore, the first protection chip U1 in the battery protection circuit 100 can detect its own pin or component. The current or voltage on the battery determines whether the state of charge is in an overcharge state, and thereby disconnects the charging circuit 200 from the battery 300 in the overcharge state, thereby protecting the battery 300.
  • the power output terminal 112V DD of the first protection chip U1 exceeds the overcharge detection voltage V CU , and the maintenance time exceeds the overcharge voltage detection delay time Tcu, then the first protection chip The U1 internal switch is turned off, and the connection between the charging circuit 200 and the battery 300 is disconnected, so that the battery 300 can be protected.
  • the first protection chip U1 detects that the charging current value exceeds the overcharge detection current value I OCC , and the duration exceeds the overcharge current detection delay time t OCC , the first protection chip U1 The internal switch tube will be turned off, and the connection between the charging circuit 200 and the battery 300 will be disconnected, so that the battery 300 can be protected.
  • the overcurrent detecting end 111 of the first protection chip U1 is connected to the system power supply terminal VCC_BAR
  • the power output terminal 112 of the first protection chip U1 is connected to the positive electrode of the battery 300
  • the negative electrode of the battery 300 is grounded, and the battery 300 is discharged.
  • the battery 300 must pass through the battery protection circuit 100 to discharge the system power supply terminal VCC_BAR of the electronic product, so that the first protection chip U1 in the battery protection circuit 100 can detect the current or voltage on its own pin or component. It is judged whether or not the state of charge is in an over-discharge state, and the connection between the discharge circuit and the battery 300 is disconnected in the over-discharge state, so that the battery 300 can be protected.
  • the power-output terminal 112VDD of the first protection chip U1 falls to the over-discharge detection voltage V DL , and the duration exceeds the over-discharge voltage detection delay time t DL , then the first protection The internal switch of the chip U1 is turned off, and the connection between the discharge circuit and the battery 300 is disconnected, so that the battery 300 can be protected.
  • the first protection chip U1 detects that the discharge current value exceeds the overcharge detection current value I ODC , and the duration exceeds the over discharge current detection delay time t ODC , the first protection chip U1 The internal switch tube will be turned off, and the connection between the discharge circuit and the battery 300 will be disconnected, so that the battery 300 can be protected.
  • the first protection chip U1 further includes a grounding end 113 and an internal power supply end 114.
  • the grounding end 113 of the first protection chip U1 is grounded.
  • the first end of the first filter capacitor C1 is connected to the ground.
  • the first filter capacitor C1 can be used to filter the internal voltage of the chip.
  • the first protection chip U1 is of the type CT2105. As shown in FIG. 1 , the current detecting end 124111 of the first protection chip U1 is a VM end, the power output end 112 is a VDD end, the ground end 113 is a GD end, and the internal power supply end 114 is a VCC end.
  • the battery protection circuit 100 of the present invention automatically disconnects the battery 300 from the charging circuit 200 or the discharging circuit through the first protection chip U1 in the battery protection circuit 100, thereby preventing overcharging or overdischarging of the battery 300. Occurs to protect the battery 300.
  • FIG. 2 is a circuit connection diagram of a battery protection circuit 100 according to a second embodiment of the present invention.
  • the battery protection circuit 100 of the present embodiment is substantially the same as the first embodiment, and the difference is that the battery protection circuit 100 further includes a second protection chip U2, and the second protection chip U2 includes a power supply terminal 121.
  • the ground terminal 122, the exposed pad terminal 123 and the detecting terminal 124, the power terminal 121 of the second protection chip U2 is connected to the anode of the battery 300, the ground terminal 122 of the second protection chip U2 is connected to the cathode of the battery 300, and the second protection chip
  • the exposed pad end 123 of U2 is connected to the ground terminal 122 of the second protection chip U2, and the detection terminal 124 of the second protection chip U2 is grounded.
  • the second protection chip U2 of the embodiment may be used to prevent overcharging or overdischarging of the battery 300.
  • the grounding end 122 of the second protection chip U2 is connected to the negative terminal of the battery 300, and the detecting end 124 of the second protection chip U2.
  • the second protection chip U2 When grounding, the negative electrode of the battery 300 is not directly grounded, the second protection chip U2 is disposed between the negative electrode of the battery 300 and the system ground, and when the battery 300 needs to be charged or discharged, the second protection chip of the negative electrode of the battery 300 is required to be turned on. U2 is connected to the ground.
  • the second protection chip U2 in the battery protection circuit 100 can determine whether the state of the circuit is in an overcharge or overdischarge state by detecting a current or a voltage on its own pin or component, thereby overcharging or The overdischarged state disconnects the connection between the negative electrode of the battery 300 and the system ground, so that the battery 300 can be protected.
  • the second protection chip U2 determines that the circuit state is in an overcharge or overdischarge state, and controls the disconnection between the battery negative electrode and the system ground. Turning on, thereby disconnecting the battery 300 from the charging circuit 200 or the discharging circuit, so that the battery is no longer involved in the circuit, preventing the occurrence of overcharging or overdischarging of the battery 300, thereby realizing protection of the battery.
  • the battery protection circuit 100 includes a protection resistor R1.
  • the first end of the protection resistor R1 is connected to the power terminal 121 of the second protection chip U2, and the second end of the protection resistor R1 is connected to the anode of the battery 300.
  • the protection resistor R1 can be used to prevent the current from being excessively burnt out.
  • the battery protection circuit 100 includes a second filter capacitor C2.
  • the first end of the second filter capacitor C2 is connected to the power terminal 121 of the second protection chip U2, and the second end of the second filter capacitor C2 is connected to the battery.
  • the negative pole of 300 is connected.
  • the second filter capacitor C2 can be used to filter the positive output voltage of the battery 300.
  • the second protection chip U2 is of the type XB6006A2. As shown in FIG. 2, the power supply terminal 121 of the second protection chip U2 is the VDD terminal, the ground terminal 122 is the GND terminal, the exposed pad terminal 123 is the EPAD terminal, and the detection terminal 124 is the VM terminal.
  • the battery protection circuit 100 of the present invention can not only pass through the first protection chip U1 in the battery protection circuit 100, but also automatically disconnect the battery 300 and the charging circuit 200 or discharge through the second protection chip U2 in the battery protection circuit 100.
  • the connection between the circuits prevents the occurrence of overcharging or overdischarging of the battery 300, thereby protecting the battery 300.
  • Fig. 3 is a circuit connection diagram of an electronic cigarette according to a third embodiment of the present invention.
  • the electronic cigarette further includes a charging circuit 200, and the charging circuit 200 includes a charging chip U3 and a brightness setting resistor R2.
  • the charging chip U3 includes a power input terminal 211, a charging indicating terminal 212, a thermal detecting terminal 213, a soft start timing terminal 214, a lighting time setting terminal 215, a charging current setting terminal 216, and a charging output terminal 217, and the charging chip U3.
  • the power input terminal 211 is connected to the external power source 500
  • the charging output terminal 217 of the charging chip U3 is connected to the overcurrent detecting terminal 111 of the first protection chip U1.
  • the first end of the brightness setting resistor R2 is connected to the power input terminal 211 of the charging chip U3.
  • the anode of the LED lamp is connected to the second end of the brightness setting resistor R2, and the cathode of the LED lamp is connected to the charging indicating end 212 of the charging chip U3.
  • the first end of the first voltage dividing resistor R3 is connected to the power input terminal 211 of the charging chip U3, and the second end of the first voltage dividing resistor R3 is connected to the thermal detecting end 213 of the charging chip U3.
  • the first end of the second voltage dividing resistor R4 is connected to the second end of the first voltage dividing resistor R3, and the second end of the second voltage dividing resistor R4 is grounded.
  • the first end of the third filter capacitor C3 is connected to the soft start timing end 214 of the charging chip U3, and the second end of the third filter capacitor C3 is grounded.
  • the first end of the first time resistor R5 is connected to the lighting time setting end 215 of the charging chip U3, and the second end of the first time resistor R5 is grounded.
  • the first end of the second time resistor R6 is connected to the charging current setting terminal 216 of the charging chip U3, and the second end of the second time resistor R6 is grounded.
  • the electronic cigarette of the embodiment includes a charging circuit 200.
  • the power input terminal 211 of the charging chip U3 of the charging circuit 200 is connected to the external power source 500, and the charging output terminal 217 of the charging chip U3 and the overcurrent detecting end of the battery protection circuit 100. 111 is connected, the power output terminal 112 of the battery protection circuit 100 is connected to the positive pole of the battery 300.
  • the charging chip U3 After receiving the external power source 500, for example, 5V, the charging chip U3 can output a charging voltage or a charging current and pass the battery protection circuit 100 that is turned on. The battery 300 is charged.
  • the voltage of the positive electrode of the battery 300 can be obtained according to the turned-on battery protection circuit 100, and it is determined whether the battery 300 is full, and then the corresponding current is output.
  • the connection mode with the external power source 500 can be, but is not limited to, an interface USB or the like.
  • the first end of the brightness setting resistor R2 is connected to the power input end 211 of the charging chip U3, the second end of the brightness setting resistor R2 is connected to the positive pole of the LED lamp, and the negative end of the LED lamp is connected to the charging indicating end 212 of the charging chip U3.
  • the brightness setting resistor R2 is connected in series with the LED lamp, and the current of the LED lamp connected in series can be determined by the resistance value of the brightness setting resistor R2, thereby setting the brightness of the LED lamp.
  • the first end of the first voltage dividing resistor R3 is connected to the power input terminal 211 of the charging chip U3, the second end of the first voltage dividing resistor R3 is connected to the thermal detecting end 213 of the charging chip U3, and the second voltage dividing resistor R4 is connected.
  • the first end is connected to the second end of the first voltage dividing resistor R3, and the second end of the second voltage dividing resistor R4 is grounded.
  • the first voltage dividing resistor R3 and the second voltage dividing resistor R4 are connected in series, and the first point is
  • the partial pressure of the voltage resistor R3 and the second voltage dividing resistor R4 can be supplied to the thermistor detecting terminal 213 of the charging chip U3, and the second voltage dividing resistor R4 can be used as a thermistor to realize the voltage against the temperature or Current adjustment.
  • the first end of the first time resistor R5 is connected to the lighting time setting end 215 of the charging chip U3, and the second end of the first time resistor R5 is grounded; the first time resistor R5 can be used to adjust the lighting time of the LED lamp.
  • the first end of the second time resistor R6 is connected to the charging current setting terminal 216 of the charging chip U3, the second end of the second time resistor R6 is grounded, and the second time resistor R6 can be used to set the charging current.
  • the battery 300 and the charging circuit can be automatically disconnected not only by the first protection chip U1 in the battery protection circuit 100 but also by the second protection chip U2 in the battery protection circuit 100.
  • the connection of 200 prevents the occurrence of overcharging of the battery 300, thereby protecting the battery 300 and the electronic cigarette.
  • the specific process can be seen in the above embodiment, and will not be described in detail herein.
  • the charging circuit 200 includes a third voltage dividing resistor R7 and a fourth voltage dividing resistor R8.
  • the first end of the third voltage dividing resistor R7 is connected to the external power source 500, and the second end of the third voltage dividing resistor R7 is connected to the interface detecting terminal USB_IN of the main control circuit.
  • the first end of the fourth voltage dividing resistor R8 is connected to the second end of the third voltage dividing resistor R7, and the second end of the fourth voltage dividing resistor R8 is grounded.
  • the third voltage dividing resistor R7 and the fourth voltage dividing resistor R8 form a series circuit.
  • the third voltage dividing resistor R7 and the fourth voltage dividing resistor R8 are divided and sent to the main control circuit.
  • the interface detection terminal USB_IN, the main control circuit can confirm the connection state of the external power supply 500.
  • the charging circuit 200 includes a fourth filter capacitor C4.
  • the first end of the fourth filter capacitor C4 is connected to the external power source 500, and the second end of the fourth filter capacitor C4 is grounded.
  • the fourth filter capacitor C4 can be used to filter the external power source 500.
  • the charging circuit 200 includes a fifth filter capacitor C5.
  • the first end of the fifth filter capacitor C5 is connected to the external power source 500, and the second end of the fifth filter capacitor C5 is grounded.
  • the fifth filter capacitor C5 can be used to filter the output voltage of the charging circuit 200.
  • the second protection chip U2 is of the type MP2602.
  • the power input terminal 211 of the charging chip U3 is the VIN terminal
  • the charging indicating terminal 212 is The thermal detection terminal 213 is the NTC terminal
  • the soft start timing terminal 214 is the SS terminal
  • the lighting time setting terminal 215 is the IBF terminal
  • the charging current setting terminal 216 is the ISET terminal
  • the charging output terminal 217 is the BATT terminal.
  • the battery protection circuit 100 and the electronic cigarette of the present invention automatically disconnect the connection between the charging circuit 200 and the battery 300 through the first protection chip U1 in the battery protection circuit 100, thereby preventing overcharging or overdischarging of the battery 300. Occurs to protect the battery 300 and the electronic cigarette.

Abstract

本实用新型提供一种电池保护电路，包括第一保护芯片，所述第一保护芯片包括过电流检测端和电源输出端，所述第一保护芯片的过电流检测端与充电电路相连，还与系统供电端相连，所述第一保护芯片的电源输出端与电池的正极相连，所述电池的负极接地。本实用新型还提供一种电子烟。本实用新型的电池保护电路和电子烟，通过电池保护电路内的第一保护芯片，自动断开电池与充电电路或放电电路间的连接，防止了对电池的过充或过放电的发生，从而保护了电池及电子烟。

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
现有电子烟为了给用户更多体验，除了的实现吸烟功能外，还附带了许多功能，比如多媒体浏览，触摸屏操作，导航，太阳能充电等功能，其用意是各厂家更好的推销自己的电子烟产品。
然而，电子烟的各类功能的使用都离不开电池的供电，当充电电路因线路老化或本身线路连接出错等原因，会出现输入或输出短路，从而造成充电时充电接口例如上的电压直接对电池形成过压充电，或者是电池正负极短路形成电流输出过大等情况，进而引起电池损坏或起火。为了避免类似情况的对于电池的过充或过放电，需要对充电电路进行改进以保护电池。
实用新型内容
本实用新型提供一种电池保护电路及电子烟，其能解决对于电池的过充或过放电的问题。
本实用新型解决技术问题所采用的技术方案如下：
本实用新型公开了一种电池保护电路，包括第一保护芯片，所述第一保护芯片包括过电流检测端和电源输出端，所述第一保护芯片的过电流检测端与充电电路相连，还与系统供电端_相连，所述第一保护芯片的电源输出端与电池的正极相连，所述电池的负极接地。
在其中一个实施方式中，所述第一保护芯片还包括接地端和内部供电端，所述第一保护芯片的接地端接地，所述第一保护芯片的内部供电端与第一滤波电容的第一端相连，所述第一滤波电容的第二端接地。
在其中一个实施方式中，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、裸焊盘端和检测端，所述第二保护芯片的电源端与所述电池的正极相连，所述第二保护芯片的接地端与所述电池的负极相连，所述第二保护芯片的裸焊盘端与所述第二保护芯片的接地端相连，所述第二保护芯片的检测端接地。
在其中一个实施方式中，所述电池保护电路包括保护电阻，所述保护电阻的第一端与所述第二保护芯片的电源端相连，所述保护电阻的第二端与所述电池的正极相连。
在其中一个实施方式中，所述电池保护电路包括第二滤波电容，所述第二滤波电容的第一端与所述第二保护芯片的电源端相连，所述第二滤波电容的第二端与所述电池的负极相连。
本实用新型提供一种电子烟，电子烟包括上述的电池保护电路。
在其中一个实施方式中，所述电子烟还包括充电电路，所述充电电路包括充电芯片、亮度设定电阻、灯、第一分压电阻、第二分压电阻、第三滤波电容、第一时间电阻、第二时间电阻。所述充电芯片包括电源输入端、充电指示端、热敏检测端、软启动定时端、亮灯时间设定端、充电电流设定端和充电输出端，所述充电芯片的电源输入端与外部电源相连，所述充电芯片的充电输出端与所述第一保护芯片的过电流检测端相连。所述亮度设定电阻的第一端与所述充电芯片的电源输入端相连。所述灯的正极与所述亮度设定电阻的第二端相连，所述灯的负极与所述充电芯片的充电指示 端相连。所述第一分压电阻的第一端与所述充电芯片的电源输入端相连，所述第一分压电阻的第二端与所述充电芯片的热敏检测端相连。所述第二分压电阻的第一端与所述第一分压电阻的第二端相连，所述第二分压电阻的第二端接地。所述第三滤波电容的第一端与所述充电芯片的软启动定时端相连，所述第三滤波电容的第二端接地。所述第一时间电阻的第一端与所述充电芯片的亮灯时间设定端相连，所述第一时间电阻的第二端接地。所述第二时间电阻的第一端与所述充电芯片的充电电流设定端相连，所述第二时间电阻的第二端接地。
在其中一个实施方式中，所述充电电路包括第三分压电阻和第四分压电阻。所述第三分压电阻的第一端与所述外部电源相连，所述第三分压电阻的第二端与主控电路的接口检测端_相连。所述第四分压电阻的第一端与所述第三分压电阻的第二端相连，所述第四分压电阻的第二端接地。
在其中一个实施方式中，所述充电电路包括第四滤波电容，所述第四滤波电容的第一端与所述外部电源相连，所述第四滤波电容的第二端接地。
在其中一个实施方式中，所述充电电路包括第五滤波电容，所述第五滤波电容的第一端与所述外部电源相连，所述第五滤波电容的第二端接地。
本实用新型实施例提供的技术方案带来的有益效果是：
本实用新型提供一种电池保护电路及电子烟，通过电池保护电路内的第一保护芯片，自动断开充电电路与电池间的连接，防止了对电池的过充或过放电的发生，从而保护了电池及电子烟。
上述说明仅是本实用新型技术方案的概述，为了能够更清楚了解本实用新型的技术手段，而可依照说明书的内容予以实施，并且为了让本实用新型的上述和其他目的、特征和优点能够更明显易懂，以下特举较佳实施例，并配合附图，详细说明如下。
附图说明
图1是本实用新型第一实施例的电池保护电路100的电路连接图；
图2是本实用新型第二实施例的电池保护电路100的电路连接图；
图3是本实用新型第三实施例的电子烟的电路连接图。
具体实施方式
为更进一步阐述本实用新型为达成预定实用新型目的所采取的技术手段及功效，以下结合附图及较佳实施例，对依据本实用新型提出的电池保护电路100及电子烟的具体实施方式、结构、特征及功效，详细说明如后。
有关本实用新型的前述及其他技术内容、特点及功效，在以下配合参考图式的较佳实施例详细说明中将可清楚的呈现。通过具体实施方式的说明，当可对本实用新型为达成预定目的所采取的技术手段及功效得以更加深入且具体的了解，然而所示附图仅是提供参考与说明之用，并非用来对本实用新型加以限制。
第一实施例
图1是本实用新型第一实施例的电池保护电路100的电路连接图。如图1所示，本实施例的电池保护电路100包括第一保护芯片U1，第一保护芯片U1包括过电流检测端111和电源输出端112，第一保护芯片U1的过电流检测端111与充电电路200相连，还与系统供电端VCC_BAR相连，第一保护芯片U1的电源输出端112与电池300的正极相连，电池300的负极接地。其中，本实施例中所说的电池300可以为锂电池，也可以为镍氢电池，还可以为镍铬电池，当然还可以为其他类型的可充电电池，在此不再赘述。
具体地，电池保护电路100包括第一保护芯片U1，第一保护芯片U1的过电流检测端111与充电电路200相连，第一保护芯片U1的电源输出端112与电池300的正极相连，电池300的负极接地，则在对电池300充电时，充电电路200必须通过电池保护电路100才可对电池300充电，因此，电池保护电路100内的第一保护芯片U1可通过检测自身的管脚或元件上的电流或电压，判断充电状态是否处于过充状态，进而在过充状态断开充电电路200与电池300之间的连接，从而可以保护电池300。具体地，在充电状态处于过充电压状态时，第一保护芯片U1的电源输出端112V DD超过过充检测电压V CU，且维持时间超过过充电压检测延迟时间Tcu时，则第一保护芯片U1内部开关管关闭，断开充电电路200与电池300之间的连接，从而可以保护电池300。具体地，在充电状态处于过充电流状态时，第一保护芯片U1检测到充电电流值超过过充检测电流值I OCC，且持续时间超过过充电流检测延迟时间t OCC，第一保护芯片U1将关闭内部开关管，断开充电电路200与电池300之间的连接，从而可以保护电池300。
具体地，第一保护芯片U1的过电流检测端111与系统供电端VCC_BAR相连，第一保护芯片U1的电源输出端112与电池300的正极相连，电池300的负极接地，则在对电池300放电时，电池300必须通过电池保护电路100才可对所在电子产品的系统供电端VCC_BAR放电，因此，电池保护电路100内的第一保护芯片U1可通过检测自身的管脚或元件上的电流或电压，判断充电状态是否处于过放状态，进而在过放状态断开放电电路与电池300之间的连接，从而可以保护电池300。具体地，在放电状态处于过放电压状态时，第一保护芯片U1的电源输出端112VDD掉至过放检测电压V DL，并且持续时间超过过放电压检测延迟时间t DL时，则第一保护芯片U1内部开关管关闭，断开放电电路与电池300之间的连接，从而可以保护电池300。具体地，在放电状态处于过放电流状态时，第一保护芯片U1检测 到放电电流值超过过充检测电流值I ODC，且持续时间超过过放电流检测延迟时间t ODC，第一保护芯片U1将关闭内部开关管，断开放电电路与电池300之间的连接，从而可以保护电池300。
在其中一个实施方式中，第一保护芯片U1还包括接地端113和内部供电端114，第一保护芯片U1的接地端113接地，第一保护芯片U1的内部供电端114与第一滤波电容C1的第一端相连，第一滤波电容C1的第二端接地。第一滤波电容C1可以用来对芯片内部电压进行滤波。
在其中一个实施方式中，第一保护芯片U1的型号为CT2105。如图1所示，第一保护芯片U1的电流检测端124111为VM端，电源输出端112为VDD端，接地端113为GD端，内部供电端114为VCC端。
本实用新型的电池保护电路100，通过电池保护电路100内的第一保护芯片U1，自动断开电池300与充电电路200或放电电路间的连接，防止了对电池300的过充或过放电的发生，从而保护了电池300。
第二实施例
图2是本实用新型第二实施例的电池保护电路100的电路连接图。如图2所示，本实施例的电池保护电路100与第一实施例基本相同，其不同之处在于：电池保护电路100还包括第二保护芯片U2，第二保护芯片U2包括电源端121、接地端122、裸焊盘端123和检测端124，第二保护芯片U2的电源端121与电池300的正极相连，第二保护芯片U2的接地端122与电池300的负极相连，第二保护芯片U2的裸焊盘端123与第二保护芯片U2的接地端122相连，第二保护芯片U2的检测端124接地。
具体地，本实施例的第二保护芯片U2可以用于防止电池300的过充或过放电，第二保护芯片U2的接地端122与电池300的负极相连，第二保护芯片U2的检测端124接地，则电池300的负极不直接接地，第二保护芯片 U2设置在电池300的负极于系统地之间，而电池300需要充电或放电时，需要电池300的负极通过导通的第二保护芯片U2与地相连，因此，电池保护电路100内的第二保护芯片U2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300的负极与系统地之间的连接，从而可以保护电池300。具体地，本实施例的第二保护芯片U2可以在第一保护芯片U1出现短路等故障失效时，第二保护芯片U2判断电路状态处于过充或过放电状态，控制电池负极与系统地之间断开，从而断开电池300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300的过充或过放电的发生，从而实现对电池的保护。
在其中一个实施方式中，电池保护电路100包括保护电阻R1，保护电阻R1的第一端与第二保护芯片U2的电源端121相连，保护电阻R1的第二端与电池300的正极相连。保护电阻R1可以用来防止电流过大烧坏芯片。
在其中一个实施方式中，电池保护电路100包括第二滤波电容C2，第二滤波电容C2的第一端与第二保护芯片U2的电源端121相连，第二滤波电容C2的第二端与电池300的负极相连。第二滤波电容C2可以用来对电池300的正极输出电压进行滤波。
在其中一个实施方式中，第二保护芯片U2的型号为XB6006A2。如图2所示，第二保护芯片U2的电源端121为VDD端，接地端122为GND端，裸焊盘端123为EPAD端，检测端124为VM端。
本实用新型的电池保护电路100，不仅可以通过电池保护电路100内的第一保护芯片U1，还可通过电池保护电路100内的第二保护芯片U2，自动断开电池300与充电电路200或放电电路间的连接，防止了对电池300的过充或过放电的发生，从而保护了电池300。
第三实施例
图3是本实用新型第三实施例的电子烟的电路连接图。如图3所示，请同时参照图2，本实施例与第二实施例基本相同，其不同之处在于：电子烟还包括充电电路200，充电电路200包括充电芯片U3、亮度设定电阻R2、LED灯、第一分压电阻R3、第二分压电阻R4、第三滤波电容C3、第一时间电阻R5、第二时间电阻R6。充电芯片U3包括电源输入端211、充电指示端212、热敏检测端213、软启动定时端214、亮灯时间设定端215、充电电流设定端216和充电输出端217，充电芯片U3的电源输入端211与外部电源500相连，充电芯片U3的充电输出端217与第一保护芯片U1的过电流检测端111相连。亮度设定电阻R2的第一端与充电芯片U3的电源输入端211相连。LED灯的正极与亮度设定电阻R2的第二端相连，LED灯的负极与充电芯片U3的充电指示端212相连。第一分压电阻R3的第一端与充电芯片U3的电源输入端211相连，第一分压电阻R3的第二端与充电芯片U3的热敏检测端213相连。第二分压电阻R4的第一端与第一分压电阻R3的第二端相连，第二分压电阻R4的第二端接地。第三滤波电容C3的第一端与充电芯片U3的软启动定时端214相连，第三滤波电容C3的第二端接地。第一时间电阻R5的第一端与充电芯片U3的亮灯时间设定端215相连，第一时间电阻R5的第二端接地。第二时间电阻R6的第一端与充电芯片U3的充电电流设定端216相连，第二时间电阻R6的第二端接地。
具体地，本实施例的电子烟包括充电电路200，充电电路200的充电芯片U3的电源输入端211与外部电源500相连，充电芯片U3的充电输出端217与电池保护电路100的过电流检测端111相连，电池保护电路100的电源输出端112与电池300的正极相连，则充电芯片U3接收外部电源500例如5V后，可以输出一充电电压或一充电电流并通过导通的电池保护电路100对电池300进行充电。一实施方式中，可以根据导通的电池保护电路 100获得电池300正极的电压，判断电池300是否充满，进而输出相应的电流。其中，与外部电源500的相连方式可以但不局限于通过接口USB等等。亮度设定电阻R2的第一端与充电芯片U3的电源输入端211相连，亮度设定电阻R2的第二端与LED灯的正极相连，LED灯的负极与充电芯片U3的充电指示端212相连，则亮度设定电阻R2与LED灯串联，可以通过亮度设定电阻R2的阻值确定相串联的LED灯的电流，进而设定LED灯的亮度。第一分压电阻R3的第一端与充电芯片U3的电源输入端211相连，第一分压电阻R3的第二端与充电芯片U3的热敏检测端213相连，第二分压电阻R4的第一端与第一分压电阻R3的第二端相连，第二分压电阻R4的第二端接地，因此，第一分压电阻R3与第二分压电阻R4串联连接，则第一分压电阻R3、第二分压电阻R4的分压可以提供给充电芯片U3的热敏检测端213，并且，第二分压电阻R4可以作为热敏电阻，以用来实现对温度下的电压或电流的调整。第一时间电阻R5的第一端与充电芯片U3的亮灯时间设定端215相连，第一时间电阻R5的第二端接地；第一时间电阻R5可以用于调节LED灯的亮灯时间。第二时间电阻R6的第一端与充电芯片U3的充电电流设定端216相连，第二时间电阻R6的第二端接地，第二时间电阻R6可以用于设定充电电流。
具体地，当充电电路200发生短路故障时，不仅可以通过电池保护电路100内的第一保护芯片U1，还可通过电池保护电路100内的第二保护芯片U2，自动断开电池300与充电电路200间的连接，防止了对电池300的过充的发生，从而保护了电池300及电子烟。具体过程可见上述实施例，此处不再详述。
在其中一个实施方式中，充电电路200包括第三分压电阻R7和第四分压电阻R8。第三分压电阻R7的第一端与外部电源500相连，第三分压电阻R7的第二端与主控电路的接口检测端USB_IN相连。第四分压电阻R8 的第一端与第三分压电阻R7的第二端相连，第四分压电阻R8的第二端接地。第三分压电阻R7和第四分压电阻R8形成串联电路，当外部电源500接入电路时，第三分压电阻R7、第四分压电阻R8上得到一分压并发送给主控电路的接口检测端USB_IN，则主控电路可以确认外部电源500的连接状态。
在其中一个实施方式中，充电电路200包括第四滤波电容C4，第四滤波电容C4的第一端与外部电源500相连，第四滤波电容C4的第二端接地。第四滤波电容C4可以用来对外部电源500进行滤波。
在其中一个实施方式中，充电电路200包括第五滤波电容C5，第五滤波电容C5的第一端与外部电源500相连，第五滤波电容C5的第二端接地。第五滤波电容C5可以用来对充电电路200输出电压进行滤波。
在其中一个实施方式中，第二保护芯片U2的型号为MP2602。如图3所示，充电芯片U3的电源输入端211为VIN端，充电指示端212为
Figure PCTCN2019073115-appb-000001
端，热敏检测端213为NTC端，软启动定时端214为SS端，亮灯时间设定端215为IBF端，充电电流设定端216为ISET端，充电输出端217为BATT端。
本实用新型的电池保护电路100和电子烟，通过电池保护电路100内的第一保护芯片U1，自动断开充电电路200与电池300间的连接，防止了对电池300的过充或过放电的发生，从而保护了电池300及电子烟。
以上，仅是本实用新型的较佳实施例而已，并非对本实用新型作任何形式上的限制，虽然本实用新型已以较佳实施例揭露如上，然而并非用以限定本实用新型，任何熟悉本专业的技术人员，在不脱离本实用新型技术方案范围内，当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本实用新型技术方案内容，依据本实用新型的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍 属于本实用新型技术方案的范围内。

Claims (10)

  1. 一种电池保护电路(100)，其特征在于，包括第一保护芯片(U1)，所述第一保护芯片(U1)包括过电流检测端(111)和电源输出端(112)，所述第一保护芯片(U1)的过电流检测端(111)与充电电路(200)相连，还与系统供电端(VCC_BAR)相连，所述第一保护芯片(U1)的电源输出端(112)与电池(300)的正极相连，所述电池(300)的负极接地。
  2. 如权利要求1所述的电池保护电路(100)，其特征在于，所述第一保护芯片(U1)还包括接地端(113)和内部供电端(114)，所述第一保护芯片(U1)的接地端(113)接地，所述第一保护芯片(U1)的内部供电端(114)与第一滤波电容(C1)的第一端相连，所述第一滤波电容(C1)的第二端接地。
  3. 如权利要求1所述的电池保护电路(100)，其特征在于，所述电池保护电路(100)包括第二保护芯片(U2)，所述第二保护芯片(U2)包括电源端(121)、接地端(122)、裸焊盘端(123)和检测端(124)，所述第二保护芯片(U2)的电源端(121)与所述电池(300)的正极相连，所述第二保护芯片(U2)的接地端(122)与所述电池(300)的负极相连，所述第二保护芯片(U2)的裸焊盘端(123)与所述第二保护芯片(U2)的接地端(122)相连，所述第二保护芯片(U2)的检测端(124)接地。
  4. 如权利要求3所述的电池保护电路(100)，其特征在于，所述电池保护电路(100)包括保护电阻(R1)，所述保护电阻(R1)的第一端与所述第二保护芯片(U2)的电源端(121)相连，所述保护电阻(R1)的第二端与所述电池(300)的正极相连。
  5. 如权利要求3或4所述的电池保护电路(100)，其特征在于，所述电池保护电路(100)包括第二滤波电容(C2)，所述第二滤波电容(C2)的第一端与 所述第二保护芯片(U2)的电源端(121)相连，所述第二滤波电容(C2)的第二端与所述电池(300)的负极相连。
  6. 一种电子烟，其特征在于，所述电子烟包括如权利要求1至5任意一项所述的电池保护电路(100)。
  7. 如权利要求6所述的电子烟，其特征在于，所述电子烟还包括充电电路(200)，所述充电电路(200)包括充电芯片(U3)、亮度设定电阻(R2)、LED灯、第一分压电阻(R3)、第二分压电阻(R4)、第三滤波电容(C3)、第一时间电阻(R5)、第二时间电阻(R6)；
    所述充电芯片(U3)包括电源输入端(211)、充电指示端(212)、热敏检测端(213)、软启动定时端(214)、亮灯时间设定端(215)、充电电流设定端(216)和充电输出端(217)，所述充电芯片(U3)的电源输入端(211)与外部电源(500)相连，所述充电芯片(U3)的充电输出端(217)与所述第一保护芯片(U1)的过电流检测端(111)相连；
    所述亮度设定电阻(R2)的第一端与所述充电芯片(U3)的电源输入端(211)相连；
    所述LED灯的正极与所述亮度设定电阻(R2)的第二端相连，所述LED灯的负极与所述充电芯片(U3)的充电指示端(212)相连；
    所述第一分压电阻(R3)的第一端与所述充电芯片(U3)的电源输入端(211)相连，所述第一分压电阻(R3)的第二端与所述充电芯片(U3)的热敏检测端(213)相连；
    所述第二分压电阻(R4)的第一端与所述第一分压电阻(R3)的第二端相连，所述第二分压电阻(R4)的第二端接地；
    所述第三滤波电容(C3)的第一端与所述充电芯片(U3)的软启动定时端(214)相连，所述第三滤波电容(C3)的第二端接地；
    所述第一时间电阻(R5)的第一端与所述充电芯片(U3)的亮灯时间设定端(215)相连，所述第一时间电阻(R5)的第二端接地；
    所述第二时间电阻(R6)的第一端与所述充电芯片(U3)的充电电流设定端(216)相连，所述第二时间电阻(R6)的第二端接地。
  8. 如权利要求7所述的电子烟，其特征在于，所述充电电路(200)包括第三分压电阻(R7)和第四分压电阻(R8)；
    所述第三分压电阻(R7)的第一端与所述外部电源(500)相连，所述第三分压电阻(R7)的第二端与主控电路的接口检测端(USB_IN)相连；
    所述第四分压电阻(R8)的第一端与所述第三分压电阻(R7)的第二端相连，所述第四分压电阻(R8)的第二端接地。
  9. 如权利要求8所述的电子烟，其特征在于，所述充电电路(200)包括第四滤波电容(C4)，所述第四滤波电容(C4)的第一端与所述外部电源(500)相连，所述第四滤波电容(C4)的第二端接地。
  10. 如权利要求9所述的电子烟，其特征在于，所述充电电路(200)包括第五滤波电容(C5)，所述第五滤波电容(C5)的第一端与所述充电芯片(U3)的充电输出端(217)相连，所述第五滤波电容(C5)的第二端接地。
PCT/CN2019/073115 2018-03-05 2019-01-25 电池保护电路及电子烟 WO2019169968A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201820304722.X 2018-03-05
CN201820304722.XU CN208241335U (zh) 2018-03-05 2018-03-05 电池保护电路及电子烟

Publications (1)

Publication Number Publication Date
WO2019169968A1 true WO2019169968A1 (zh) 2019-09-12

Family

ID=64588201

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/073115 WO2019169968A1 (zh) 2018-03-05 2019-01-25 电池保护电路及电子烟

Country Status (2)

Country Link
CN (1) CN208241335U (zh)
WO (1) WO2019169968A1 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113303504A (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
CN113949126A (zh) * 2021-10-14 2022-01-18 东莞新能安科技有限公司 充电保护电路、电池管理系统、电池组及电路控制方法
EP3967163A1 (en) * 2020-09-07 2022-03-16 Japan Tobacco Inc. Inhaler controller
CN114376271A (zh) * 2021-12-30 2022-04-22 西安稳先半导体科技有限责任公司 一种电池保护电路、电池组件及电子装置
CN114376271B (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、电池组件及电子装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN210129732U (zh) * 2019-03-13 2020-03-06 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
CN114336890B (zh) * 2022-01-13 2023-09-08 无锡市晶源微电子股份有限公司 电池放电保护装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1507089A (zh) * 2002-11-28 2004-06-23 索尼公司 带有保护电路的电池组
JP2014050235A (ja) * 2012-08-31 2014-03-17 Hitachi Maxell Ltd 充放電保護機能を有する二次電池パック
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
CN207039239U (zh) * 2017-07-18 2018-02-23 歌尔科技有限公司 带有储电功能的充电底座
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1507089A (zh) * 2002-11-28 2004-06-23 索尼公司 带有保护电路的电池组
JP2014050235A (ja) * 2012-08-31 2014-03-17 Hitachi Maxell Ltd 充放電保護機能を有する二次電池パック
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
CN207039239U (zh) * 2017-07-18 2018-02-23 歌尔科技有限公司 带有储电功能的充电底座
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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3967163A1 (en) * 2020-09-07 2022-03-16 Japan Tobacco Inc. Inhaler controller
CN113303504A (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
CN113303504B (zh) * 2021-05-19 2023-08-22 西安稳先半导体科技有限责任公司 一种烟杆、电子烟
CN113949126A (zh) * 2021-10-14 2022-01-18 东莞新能安科技有限公司 充电保护电路、电池管理系统、电池组及电路控制方法
CN114376271A (zh) * 2021-12-30 2022-04-22 西安稳先半导体科技有限责任公司 一种电池保护电路、电池组件及电子装置
CN114376271B (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、电池组件及电子装置
CN114209093B (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
CN114209095B (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、电池组件及电子装置

Also Published As

Publication number Publication date
CN208241335U (zh) 2018-12-14

Similar Documents

Publication Publication Date Title
WO2019169968A1 (zh) 电池保护电路及电子烟
CN104600676B (zh) 电池保护电路、电能提供装置与电子装置
WO2015172710A1 (zh) 电池防爆电路、充电电路以及充、放电保护电路
JP2013529455A (ja) 高度蓄電池システム
CN102801195B (zh) 车辆蓄电池保护装置及车辆
EP3750419A1 (en) Voltage output circuit and electronic cigarette
CN111740388A (zh) 电源保护电路、电子烟、电源保护方法及装置
WO2020057474A1 (zh) 电压输出电路以及电子烟
CN202014087U (zh) 便携式系统锂电池充电保护电路
CN202121027U (zh) 一种带有高精度电流保护电路的电池
JP2003174720A (ja) 二次電池の保護回路及び保護回路用ｉｃ
CN209860582U (zh) 电源保护电路、电子烟、电源保护装置
WO2017219359A1 (zh) 多极耳电池
CN107346912B (zh) 一种充放电管理集成ic
CN201199534Y (zh) 锂离子电池包及其串联、并联应用电路
CN206452101U (zh) 一种双节锂电池保护电路
CN216872881U (zh) 通用双电源管理电路
CN2938522Y (zh) 动力锂离子电池的过电流保护电路
CN100527556C (zh) 多节锂离子电池组保护电路
CN107834670A (zh) 一种应用于手机的锂电池保护电路
CN209948749U (zh) 充放电控制保护电路
CN209419247U (zh) 一种锂电池高温自动保护板
CN103247919B (zh) 一种基于机器视觉的自动断电装置
CN207069568U (zh) 新风控制器的锂电池充放电保护电路
CN109391010A (zh) 一种锂电池高温自动保护板

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: 19764953

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: 19764953

Country of ref document: EP

Kind code of ref document: A1