WO2022109936A1 - Vehicle starting power supply protection circuit - Google Patents

Vehicle starting power supply protection circuit Download PDF

Info

Publication number
WO2022109936A1
WO2022109936A1 PCT/CN2020/131826 CN2020131826W WO2022109936A1 WO 2022109936 A1 WO2022109936 A1 WO 2022109936A1 CN 2020131826 W CN2020131826 W CN 2020131826W WO 2022109936 A1 WO2022109936 A1 WO 2022109936A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting wire
starting power
protection circuit
positive electrode
optocoupler
Prior art date
Application number
PCT/CN2020/131826
Other languages
French (fr)
Chinese (zh)
Inventor
陈章盛
Original Assignee
深圳市思倍生电子科技有限公司
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
Priority claimed from CN202011332110.XA external-priority patent/CN112350289A/en
Priority claimed from CN202022745358.0U external-priority patent/CN213585150U/en
Application filed by 深圳市思倍生电子科技有限公司 filed Critical 深圳市思倍生电子科技有限公司
Publication of WO2022109936A1 publication Critical patent/WO2022109936A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • 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
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection

Definitions

  • the invention relates to the technical field of automotive power supply, in particular to a protection circuit for automotive starting power supply.
  • the present invention provides an automobile starting power protection circuit to solve the technical problems raised in the background art.
  • An automobile starting power protection circuit comprising a positive connecting wire and a negative connecting wire
  • the positive electrode connecting wire is used to connect the positive electrode of the vehicle starting power supply and the positive electrode of the vehicle battery;
  • the negative connecting wire is used to connect the negative electrode of the vehicle starting power supply and the negative electrode of the vehicle battery;
  • a start switch, an anti-backlash element and a PTC thermistor are sequentially connected in series along the current flow direction on the positive connecting wire.
  • the anti-backlash element is two diodes connected in parallel.
  • the positive feedback circuit includes a controller, a first optocoupler and a first display lamp;
  • the light emitter of the first optocoupler is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, and the positive electrode of the light emitter of the first optocoupler is connected to the positive electrode connecting wire;
  • the first control port of the controller is electrically connected to the negative electrode connecting wire through the light receiver of the first optocoupler;
  • the first display light is connected in series between the second control port of the controller and the negative connecting wire.
  • a reverse-connection feedback circuit is also included, and the reverse-connection feedback circuit includes a controller, a second optocoupler and a second display lamp;
  • the light emitter of the second optocoupler is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, and the positive electrode of the light emitter of the second optocoupler is connected to the negative electrode connecting wire;
  • the third control port of the controller is electrically connected to the negative electrode connecting wire through the light receiver of the second optocoupler;
  • the second display light is connected in series between the fourth control port of the controller and the negative connecting wire.
  • first display light and the second display light are both LED lights.
  • controller is a single-chip microcomputer.
  • a first protection resistor is connected in series with the first display lamp.
  • a second protection resistor is connected in series with the second display lamp.
  • a third protection resistor is connected in series with the light emitter of the first optocoupler.
  • a fourth protection resistor is connected in series with the light emitter of the second optocoupler.
  • the invention utilizes the positive temperature characteristic of the PTC thermistor as the short-circuit and overload protection functions of the starting power supply of the automobile, and has the characteristics of simple structure, low cost and high reliability.
  • the protection circuit When the protection circuit is connected to the car battery and the ignition is on, the car starting power supplies power to the car engine through the start switch, anti-backlash diode and PTC resistor.
  • the peak starting current duration is very short. At this time, it is not enough to make the resistance of the PTC resistor increase sharply, and the car engine starts normally.
  • the two ends of the protection circuit are short-circuited, the instantaneous short-circuit current is very large, which causes the PTC resistor to heat up rapidly, and the resistance value increases sharply. .
  • FIG. 1 is a circuit diagram of an automobile starting power protection circuit according to an embodiment of the present invention.
  • an automobile starting power protection circuit includes a positive connecting wire and a negative connecting wire.
  • the positive connecting wire is used to connect the positive electrode of the vehicle starting power supply VBAT with the positive electrode of the vehicle battery; the negative connecting wire is used to connect the negative electrode of the vehicle starting power supply VBAT and the negative electrode of the vehicle battery.
  • a start switch SW, an anti-backlash element D1 and a PTC thermistor are sequentially connected in series along the current flow direction on the positive connection wire.
  • the anti-backlash element is two parallel diodes, which are used to prevent the voltage in the car battery from flowing in reverse to the car starting power supply.
  • the car starting power VBAT supplies power to the car engine through the start switch SW, the anti-backlash diode D1, and the PTC resistor PTC1.
  • the peak starting current continues. The time is very short. At this time, it is not enough to make the resistance of the PTC resistor increase sharply, and the car engine starts normally.
  • the two ends of the protection circuit are short-circuited, the instantaneous short-circuit current is very large, which causes the PTC resistor to heat up rapidly, and the resistance value increases sharply. .
  • the automotive starting power protection circuit provided in this embodiment further includes a positive-connection feedback circuit and a reverse-connection feedback circuit.
  • the positive feedback circuit includes a controller, a first optocoupler OT1 and a first display light, and the first display light is an LED light.
  • the light emitter of the first optocoupler OT1 is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, the positive electrode of the light emitter of the first optocoupler OT1 is connected to the positive electrode connecting wire, and the first optocoupler
  • a third protection resistor R1 is connected in series with the light emitter.
  • the first control port of the controller is electrically connected to the negative electrode connecting wire through the light receiver of the first optocoupler OT1.
  • the first display light is connected in series between the second control port of the controller and the negative connecting wire, and a first protection resistor R2 is connected in series with the first display light.
  • the reverse-connection feedback circuit includes a controller, a second optocoupler OT2 and a second display light, and the second display light is an LED light.
  • the light emitter of the second optocoupler OT2 is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, the positive electrode of the light emitter of the second optocoupler OT2 is connected to the negative electrode connecting wire, and the second optocoupler OT2
  • a fourth protection resistor R4 is connected in series with the light emitter.
  • the third control port of the controller is electrically connected to the negative connecting wire through the light receiver of the second optocoupler OT2.
  • the second display light is connected in series between the fourth control port of the controller and the negative connecting wire, and a second protection resistor R3 is connected in series with the second display light.
  • the controller is a single chip microcomputer.
  • the optical coupler OT1 is used as the feedback signal of the positive connection between the protection circuit and the car battery. If the protection circuit is correctly connected to the car battery, that is, the positive connecting wire is connected to the positive electrode of the car battery, and the negative connecting wire is connected to the negative electrode of the car battery, the optical coupling OT1 will feed back the connection signal to the controller, and the controller will light the first indicator light to If the connection is normal, press the start switch SW to enter the working state.
  • the optocoupler OT2 is used as a feedback signal for the reverse connection between the protection circuit and the car battery. If the protection circuit is reversely connected to the car battery, that is, the positive connecting wire is connected to the negative electrode of the car battery, and the negative connecting wire is connected to the positive electrode of the car battery. To indicate wrong connection, remind users to pay attention.

Abstract

Disclosed in the present invention is a vehicle starting power supply protection circuit, comprising a positive electrode connecting wire and a negative electrode connecting wire, wherein the positive electrode connecting wire is used for connecting a positive electrode of a vehicle starting power supply and a positive electrode of a vehicle battery, and the negative electrode connecting wire is used for connecting a negative electrode of the vehicle starting power supply and a negative electrode of the vehicle battery, and a starting switch, an anti-channeling element and a PTC thermistor are sequentially connected in series on the positive electrode connecting wire along the current flow direction. The present invention uses the positive temperature characteristic of a PTC thermistor to realize a short-circuit and overload protection function of a vehicle starting power supply, and has the features of a simple structure, a low cost and a high reliability. After a protection circuit is connected to a vehicle battery and when both ends of the protection circuit are short-circuited, the instantaneous short-circuit current thereof is large and promotes a PTC resistor to rapidly emit heat and makes the resistance sharply increase, and the increase of the PTC resistance causes the discharge current of the protection circuit to decrease sharply, thus achieving the aim of protecting a vehicle starting power supply.

Description

一种汽车启动电源保护电路A kind of car starting power protection circuit 技术领域technical field
本发明涉及汽车供电技术领域，具体涉及一种汽车启动电源保护电路。The invention relates to the technical field of automotive power supply, in particular to a protection circuit for automotive starting power supply.
背景技术Background technique
目前市场上的汽车启动电源对电池的保护大多是利用MOS管、检流电阻及其外围控制器件作为保护，当启动电源打火夹短路或通过电流过大时，通过检流电阻拾取其电流信号，然后通过比较器等控制电路来控制MOS管的关闭以达到保护的作用。At present, most of the car start-up power supplies on the market use MOS tubes, current-sense resistors and peripheral control devices as protection to protect the battery. , and then control the closing of the MOS tube through a control circuit such as a comparator to achieve the function of protection.
因汽车启动时的启动电流较大，在以MOS管作为保护器件的打火夹中需要多个同型号同容量的MOS管并联起来使用，多个MOS管的并联使用因将会导致其可靠性下降、成本提高。同时，用检流电阻来拾取其电流信号，因检流电阻生产工艺的误差将会导致其一致性偏差。Due to the large starting current when the car is started, multiple MOS tubes of the same type and capacity need to be used in parallel in the ignition clip with MOS tubes as protection devices. The parallel use of multiple MOS tubes will lead to its reliability. decrease and cost increase. At the same time, the current sensing resistor is used to pick up its current signal, and the error of the current sensing resistor production process will lead to its consistency deviation.
发明内容SUMMARY OF THE INVENTION
针对现有技术中的缺陷，本发明提供一种汽车启动电源保护电路，以解决背景技术中所提出的技术问题。In view of the defects in the prior art, the present invention provides an automobile starting power protection circuit to solve the technical problems raised in the background art.
本发明通过以下技术手段解决上述技术问题：The present invention solves the above-mentioned technical problems through the following technical means:
一种汽车启动电源保护电路，包括正极连接导线和负极连接导线；An automobile starting power protection circuit, comprising a positive connecting wire and a negative connecting wire;
所述正极连接导线用于将所述汽车启动电源正极和汽车电瓶正极连接；The positive electrode connecting wire is used to connect the positive electrode of the vehicle starting power supply and the positive electrode of the vehicle battery;
所述负极连接导线用于将所述汽车启动电源负极和汽车电瓶负极连接；The negative connecting wire is used to connect the negative electrode of the vehicle starting power supply and the negative electrode of the vehicle battery;
其中，所述正极连接导线上沿电流流动方向依次串联有启动开关、防反窜元件和PTC热敏电阻。Wherein, a start switch, an anti-backlash element and a PTC thermistor are sequentially connected in series along the current flow direction on the positive connecting wire.
进一步，所述防反窜元件为两个并联的二极管。Further, the anti-backlash element is two diodes connected in parallel.
进一步，还包括正接反馈电路，所述正接反馈电路包括控制器、第一光耦和第一显示灯；Further, it also includes a positive feedback circuit, and the positive feedback circuit includes a controller, a first optocoupler and a first display lamp;
所述第一光耦的发光器串联在所述正极连接导线和负极连接导线之间，所述第一光耦的发光器正极与所述正极连接导线连接；The light emitter of the first optocoupler is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, and the positive electrode of the light emitter of the first optocoupler is connected to the positive electrode connecting wire;
所述控制器的第一控制端口通过第一光耦的受光器与所述负极连接导线电连接；The first control port of the controller is electrically connected to the negative electrode connecting wire through the light receiver of the first optocoupler;
所述第一显示灯串联在所述控制器的第二控制端口与所述负极连接导线之间。The first display light is connected in series between the second control port of the controller and the negative connecting wire.
进一步，还包括反接反馈电路，所述反接反馈电路包括控制器、第二光耦和第二显示灯；Further, a reverse-connection feedback circuit is also included, and the reverse-connection feedback circuit includes a controller, a second optocoupler and a second display lamp;
所述第二光耦的发光器串联在所述正极连接导线和负极连接导线之间，所述第二光耦的发光器正极与所述负极连接导线连接；The light emitter of the second optocoupler is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, and the positive electrode of the light emitter of the second optocoupler is connected to the negative electrode connecting wire;
所述控制器的第三控制端口通过第二光耦的受光器与所述负极连接导线电连接；The third control port of the controller is electrically connected to the negative electrode connecting wire through the light receiver of the second optocoupler;
所述第二显示灯串联在所述控制器的第四控制端口与所述负极连接导线之间。The second display light is connected in series between the fourth control port of the controller and the negative connecting wire.
进一步，所述第一显示灯和第二显示灯均为LED灯。Further, the first display light and the second display light are both LED lights.
进一步，所述控制器为单片机。Further, the controller is a single-chip microcomputer.
进一步，所述第一显示灯上串联有第一保护电阻。Further, a first protection resistor is connected in series with the first display lamp.
进一步，所述第二显示灯上串联有第二保护电阻。Further, a second protection resistor is connected in series with the second display lamp.
进一步，所述第一光耦的发光器上串联有第三保护电阻。Further, a third protection resistor is connected in series with the light emitter of the first optocoupler.
进一步，所述第二光耦的发光器上串联有第四保护电阻。Further, a fourth protection resistor is connected in series with the light emitter of the second optocoupler.
本发明的有益效果体现在：The beneficial effects of the present invention are embodied in:
本发明利用PTC热敏电阻的正温度特性来作为汽车启动电源的短路、过载保护功能用，具有结构简单、成本低廉、可靠性高的特点。当保护电路与汽车电瓶连接后，打火时，汽车启动电源通过启动开关、防反窜二极管、PTC电阻 给汽车发动机供电，在汽车发动机正常的启动过程中，其峰值启动电流持续时间很短，这时不足以使PTC电阻的电阻急剧增大，汽车发动机正常启动。当保护电路两端短路时，其瞬间短路电流很大，促使PTC电阻迅速发热，阻值急剧增加，PTC阻值的增大致使保护电路的放电电流急剧减小，而达到保护汽车启动电源的目的。The invention utilizes the positive temperature characteristic of the PTC thermistor as the short-circuit and overload protection functions of the starting power supply of the automobile, and has the characteristics of simple structure, low cost and high reliability. When the protection circuit is connected to the car battery and the ignition is on, the car starting power supplies power to the car engine through the start switch, anti-backlash diode and PTC resistor. During the normal starting process of the car engine, the peak starting current duration is very short. At this time, it is not enough to make the resistance of the PTC resistor increase sharply, and the car engine starts normally. When the two ends of the protection circuit are short-circuited, the instantaneous short-circuit current is very large, which causes the PTC resistor to heat up rapidly, and the resistance value increases sharply. .
附图说明Description of drawings
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍。在所有附图中，类似的元件或部分一般由类似的附图标记标识。附图中，各元件或部分并不一定按照实际的比例绘制。In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the specific embodiments or the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. In the drawings, each element or section is not necessarily drawn to actual scale.
图1为本发明实施例提供的一种汽车启动电源保护电路的电路图。FIG. 1 is a circuit diagram of an automobile starting power protection circuit according to an embodiment of the present invention.
具体实施方式Detailed ways
下面将结合附图对本发明技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本发明的技术方案，因此只作为示例，而不能以此来限制本发明的保护范围。Embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.
需要注意的是，除非另有说明，本申请使用的技术术语或者科学术语应当为本发明所属领域技术人员所理解的通常意义。It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the usual meanings understood by those skilled in the art to which the present invention belongs.
如图1所示，本发明提供的一种汽车启动电源保护电路，包括正极连接导线和负极连接导线。所述正极连接导线用于将所述汽车启动电源VBAT正极和汽车电瓶正极连接；所述负极连接导线用于将所述汽车启动电源VBAT负极和汽车电瓶负极连接。其中，所述正极连接导线上沿电流流动方向依次串联有启动开关SW、防反窜元件D1和PTC热敏电阻。As shown in FIG. 1 , an automobile starting power protection circuit provided by the present invention includes a positive connecting wire and a negative connecting wire. The positive connecting wire is used to connect the positive electrode of the vehicle starting power supply VBAT with the positive electrode of the vehicle battery; the negative connecting wire is used to connect the negative electrode of the vehicle starting power supply VBAT and the negative electrode of the vehicle battery. Wherein, a start switch SW, an anti-backlash element D1 and a PTC thermistor are sequentially connected in series along the current flow direction on the positive connection wire.
具体的，所述防反窜元件为两个并联的二极管，用于防止汽车电瓶中的电压反向流向汽车启动电源。Specifically, the anti-backlash element is two parallel diodes, which are used to prevent the voltage in the car battery from flowing in reverse to the car starting power supply.
当保护电路与汽车电瓶连接后，打火时，汽车启动电源VBAT通过启动开关SW、防反窜二极管D1、PTC电阻PTC1给汽车发动机供电，在汽车发动机正常的启动过程中，其峰值启动电流持续时间很短，这时不足以使PTC电阻的电阻急剧增大，汽车发动机正常启动。当保护电路两端短路时，其瞬间短路电流很大，促使PTC电阻迅速发热，阻值急剧增加，PTC阻值的增大致使保护电路的放电电流急剧减小而达到保护汽车启动电源VBAT的目的。When the protection circuit is connected to the car battery and the ignition is on, the car starting power VBAT supplies power to the car engine through the start switch SW, the anti-backlash diode D1, and the PTC resistor PTC1. During the normal starting process of the car engine, its peak starting current continues. The time is very short. At this time, it is not enough to make the resistance of the PTC resistor increase sharply, and the car engine starts normally. When the two ends of the protection circuit are short-circuited, the instantaneous short-circuit current is very large, which causes the PTC resistor to heat up rapidly, and the resistance value increases sharply. .
进一步，本实施例提供的汽车启动电源保护电路还包括正接反馈电路和反接反馈电路。Further, the automotive starting power protection circuit provided in this embodiment further includes a positive-connection feedback circuit and a reverse-connection feedback circuit.
所述正接反馈电路包括控制器、第一光耦OT1和第一显示灯，第一显示灯为LED灯。所述第一光耦OT1的发光器串联在所述正极连接导线和负极连接导线之间，所述第一光耦OT1的发光器正极与所述正极连接导线连接,所述第一光耦的发光器上串联有第三保护电阻R1。所述控制器的第一控制端口通过第一光耦OT1的受光器与所述负极连接导线电连接。所述第一显示灯串联在所述控制器的第二控制端口与所述负极连接导线之间，所述第一显示灯上串联有第一保护电阻R2。The positive feedback circuit includes a controller, a first optocoupler OT1 and a first display light, and the first display light is an LED light. The light emitter of the first optocoupler OT1 is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, the positive electrode of the light emitter of the first optocoupler OT1 is connected to the positive electrode connecting wire, and the first optocoupler A third protection resistor R1 is connected in series with the light emitter. The first control port of the controller is electrically connected to the negative electrode connecting wire through the light receiver of the first optocoupler OT1. The first display light is connected in series between the second control port of the controller and the negative connecting wire, and a first protection resistor R2 is connected in series with the first display light.
所述反接反馈电路包括控制器、第二光耦OT2和第二显示灯,第二显示灯为LED灯。所述第二光耦OT2的发光器串联在所述正极连接导线和负极连接导线之间，所述第二光耦OT2的发光器正极与所述负极连接导线连接,所述第二光耦的发光器上串联有第四保护电阻R4。所述控制器的第三控制端口通过第二光耦OT2的受光器与所述负极连接导线电连接。所述第二显示灯串联在所述控制器的第四控制端口与所述负极连接导线之间,所述第二显示灯上串联有第二保护电阻R3。The reverse-connection feedback circuit includes a controller, a second optocoupler OT2 and a second display light, and the second display light is an LED light. The light emitter of the second optocoupler OT2 is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, the positive electrode of the light emitter of the second optocoupler OT2 is connected to the negative electrode connecting wire, and the second optocoupler OT2 A fourth protection resistor R4 is connected in series with the light emitter. The third control port of the controller is electrically connected to the negative connecting wire through the light receiver of the second optocoupler OT2. The second display light is connected in series between the fourth control port of the controller and the negative connecting wire, and a second protection resistor R3 is connected in series with the second display light.
为节约成本，所述控制器为单片机。To save cost, the controller is a single chip microcomputer.
光藕OT1作为保护电路与汽车电瓶间正接的反馈信号。如果保护电路与汽车电瓶正确连接时，即正极连接导线与汽车电瓶正极连接，负极连接导线与汽车电瓶负极连接，光藕OT1将连接信号反馈给控制器，控制器点亮第一显示灯， 以示联接正常，可按下启动开关SW进入工作状态。The optical coupler OT1 is used as the feedback signal of the positive connection between the protection circuit and the car battery. If the protection circuit is correctly connected to the car battery, that is, the positive connecting wire is connected to the positive electrode of the car battery, and the negative connecting wire is connected to the negative electrode of the car battery, the optical coupling OT1 will feed back the connection signal to the controller, and the controller will light the first indicator light to If the connection is normal, press the start switch SW to enter the working state.
光藕OT2作为保护电路与汽车电瓶间反接的反馈信号。如果保护电路与汽车电瓶反向连接时，即正极连接导线与汽车电瓶负极连接，负极连接导线与汽车电瓶正极连接，光藕OT2将连接信号反馈给控制器，控制器点亮第二显示灯，以示错误连接，提醒用户注意。The optocoupler OT2 is used as a feedback signal for the reverse connection between the protection circuit and the car battery. If the protection circuit is reversely connected to the car battery, that is, the positive connecting wire is connected to the negative electrode of the car battery, and the negative connecting wire is connected to the positive electrode of the car battery. To indicate wrong connection, remind users to pay attention.
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围，其均应涵盖在本发明的权利要求和说明书的范围当中。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. The scope of the invention should be included in the scope of the claims and description of the present invention.

Claims (10)

  1. 一种汽车启动电源保护电路，其特征在于：包括正极连接导线和负极连接导线；An automobile starting power protection circuit is characterized in that: it comprises a positive connecting wire and a negative connecting wire;
    所述正极连接导线用于将所述汽车启动电源正极和汽车电瓶正极连接；The positive electrode connecting wire is used to connect the positive electrode of the vehicle starting power supply and the positive electrode of the vehicle battery;
    所述负极连接导线用于将所述汽车启动电源负极和汽车电瓶负极连接；The negative connecting wire is used to connect the negative electrode of the vehicle starting power supply and the negative electrode of the vehicle battery;
    其中，所述正极连接导线上沿电流流动方向依次串联有启动开关、防反窜元件和PTC热敏电阻。Wherein, a start switch, an anti-backlash element and a PTC thermistor are sequentially connected in series along the current flow direction on the positive connecting wire.
  2. 根据权利要求1所述的一种汽车启动电源保护电路，其特征在于：所述防反窜元件为两个并联的二极管。A vehicle starting power protection circuit according to claim 1, wherein the anti-backlash element is two diodes connected in parallel.
  3. 根据权利要求1所述的一种汽车启动电源保护电路，其特征在于：还包括正接反馈电路，所述正接反馈电路包括控制器、第一光耦和第一显示灯；The automobile starting power protection circuit according to claim 1, further comprising a positive feedback circuit, the positive feedback circuit comprising a controller, a first optocoupler and a first display lamp;
    所述第一光耦的发光器串联在所述正极连接导线和负极连接导线之间，所述第一光耦的发光器正极与所述正极连接导线连接；The light emitter of the first optocoupler is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, and the positive electrode of the light emitter of the first optocoupler is connected to the positive electrode connecting wire;
    所述控制器的第一控制端口通过第一光耦的受光器与所述负极连接导线电连接；The first control port of the controller is electrically connected to the negative electrode connecting wire through the light receiver of the first optocoupler;
    所述第一显示灯串联在所述控制器的第二控制端口与所述负极连接导线之间。The first display light is connected in series between the second control port of the controller and the negative connecting wire.
  4. 根据权利要求3所述的一种汽车启动电源保护电路，其特征在于：还包括反接反馈电路，所述反接反馈电路包括控制器、第二光耦和第二显示灯；A vehicle starting power protection circuit according to claim 3, further comprising a reverse-connection feedback circuit, the reverse-connection feedback circuit comprising a controller, a second optocoupler and a second display lamp;
    所述第二光耦的发光器串联在所述正极连接导线和负极连接导线之间，所述第二光耦的发光器正极与所述负极连接导线连接；The light emitter of the second optocoupler is connected in series between the positive electrode connecting wire and the negative electrode connecting wire, and the positive electrode of the light emitter of the second optocoupler is connected to the negative electrode connecting wire;
    所述控制器的第三控制端口通过第二光耦的受光器与所述负极连接导线电连接；The third control port of the controller is electrically connected to the negative electrode connecting wire through the light receiver of the second optocoupler;
    所述第二显示灯串联在所述控制器的第四控制端口与所述负极连接导线之间。The second display light is connected in series between the fourth control port of the controller and the negative connecting wire.
  5. 根据权利要求4所述的一种汽车启动电源保护电路，其特征在于：所述 第一显示灯和第二显示灯均为LED灯。A vehicle starting power protection circuit according to claim 4, wherein the first display light and the second display light are both LED lights.
  6. 根据权利要求4所述的一种汽车启动电源保护电路，其特征在于：所述控制器为单片机。The automobile starting power protection circuit according to claim 4, wherein the controller is a single-chip microcomputer.
  7. 根据权利要求4所述的一种汽车启动电源保护电路，其特征在于：所述第一显示灯上串联有第一保护电阻。A vehicle starting power protection circuit according to claim 4, wherein a first protection resistor is connected in series with the first indicator light.
  8. 根据权利要求4所述的一种汽车启动电源保护电路，其特征在于：所述第二显示灯上串联有第二保护电阻。The automobile starting power protection circuit according to claim 4, wherein a second protection resistor is connected in series with the second indicator light.
  9. 根据权利要求4所述的一种汽车启动电源保护电路，其特征在于：所述第一光耦的发光器上串联有第三保护电阻。A vehicle starting power protection circuit according to claim 4, wherein a third protection resistor is connected in series with the light emitter of the first optocoupler.
  10. 根据权利要求4所述的一种汽车启动电源保护电路，其特征在于：所述第二光耦的发光器上串联有第四保护电阻。A vehicle starting power protection circuit according to claim 4, wherein a fourth protection resistor is connected in series with the light emitter of the second optocoupler.
PCT/CN2020/131826 2020-11-24 2020-11-26 Vehicle starting power supply protection circuit WO2022109936A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202011332110.XA CN112350289A (en) 2020-11-24 2020-11-24 Automobile starting power supply protection circuit
CN202022745358.0 2020-11-24
CN202022745358.0U CN213585150U (en) 2020-11-24 2020-11-24 Automobile starting power supply protection circuit
CN202011332110.X 2020-11-24

Publications (1)

Publication Number Publication Date
WO2022109936A1 true WO2022109936A1 (en) 2022-06-02

Family

ID=81755102

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/131826 WO2022109936A1 (en) 2020-11-24 2020-11-26 Vehicle starting power supply protection circuit

Country Status (1)

Country Link
WO (1) WO2022109936A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001037092A (en) * 1999-07-26 2001-02-09 Auto Network Gijutsu Kenkyusho:Kk Power supply device for vehicle
CN203368004U (en) * 2013-06-21 2013-12-25 深圳Tcl新技术有限公司 Power supply protection circuit and switch power supply
CN104253453A (en) * 2013-06-27 2014-12-31 苏州中元动力科技有限公司 Ternary lithium battery vehicle emergency starting power source
CN104842800A (en) * 2015-04-11 2015-08-19 深圳市鑫嘉恒科技有限公司 Output circuit with power source polarity reverse connection protection for automobile starting circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001037092A (en) * 1999-07-26 2001-02-09 Auto Network Gijutsu Kenkyusho:Kk Power supply device for vehicle
CN203368004U (en) * 2013-06-21 2013-12-25 深圳Tcl新技术有限公司 Power supply protection circuit and switch power supply
CN104253453A (en) * 2013-06-27 2014-12-31 苏州中元动力科技有限公司 Ternary lithium battery vehicle emergency starting power source
CN104842800A (en) * 2015-04-11 2015-08-19 深圳市鑫嘉恒科技有限公司 Output circuit with power source polarity reverse connection protection for automobile starting circuit

Similar Documents

Publication Publication Date Title
JP4007096B2 (en) Lighting device
TW512575B (en) Power supply circuit
US11877362B2 (en) Light emitting diode thermal foldback control device and method
US6323597B1 (en) Thermistor shunt for series wired light string
CN102548140B (en) Led lighting device and illumination apparatus including same
US20100033113A1 (en) Led drive circuit
CN106131994B (en) A kind of LEDbulb lamp circuit of Linear temperature control protection
JP2004039289A (en) Lighting device
WO2022109936A1 (en) Vehicle starting power supply protection circuit
CN212992651U (en) Asymmetric half-bridge circuit and lighting system
CN213991102U (en) Constant current circuit for multi-path steering lamp
CN205793538U (en) A kind of LEDbulb lamp circuit of Linear temperature control protection
CN213585150U (en) Automobile starting power supply protection circuit
CN207543377U (en) A kind of Dimmable LED constant-current drive circuit
CN112350289A (en) Automobile starting power supply protection circuit
CN213093909U (en) Self-induction started intelligent clamp circuit for automobile emergency power supply
CN211580255U (en) Stroboscopic flashing control circuit and lamp with same
CN113879163A (en) Electric automobile charging seat, detection method thereof and electric automobile
CN114530823A (en) Short-circuit protection system for electric vehicle
CN108934103A (en) The circuit of LED light
CN109246889B (en) DC-DC and linear combination LED driving circuit, driving method thereof and storage medium
CN219627941U (en) New energy automobile discharge gun protection circuit and have this protection circuit's discharge gun
CN216649517U (en) Discharge circuit, power supply, and display device
WO2023208008A1 (en) Led driving power supply, illumination light source for refrigerator and illumination device
CN211720781U (en) Fill electric pile LED output system

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: 20962827

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

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 04.10.2023)