CN211844314U

CN211844314U - Be applied to start line relay circuit of car emergency starting

Info

Publication number: CN211844314U
Application number: CN202020348351.2U
Authority: CN
Inventors: 谭春根
Original assignee: Dongguan Zhenghui New Energy Co ltd
Current assignee: Dongguan Zhenghui New Energy Co ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-11-03
Anticipated expiration: 2030-03-19

Abstract

A starting line relay circuit applied to automobile emergency starting comprises a starting line, a reverse connection prevention module, an input/output voltage detection module, a temperature detection module, an MCU control module, a relay circuit on/off driving module, a relay module and an LDO module, wherein the starting line comprises a positive-level lead and a negative-level lead; the anti-reverse connection module, the input and output voltage detection module and the temperature detection module are sequentially connected between positive and negative leads of the starting line, the anti-reverse connection module, the input and output voltage detection module and the temperature detection module are respectively connected to the MCU control module, the MCU control module is connected to the positive lead through the relay circuit on/off driving module and the relay circuit, the anti-reverse connection module further comprises an LDO module, an input end of the LDO module is connected with a terminal battery, an output end of the LDO module supplies power to the MCU module, and the anti-reverse connection module further comprises a state display module, and the state display module is connected with the MCU control module.

Description

Be applied to start line relay circuit of car emergency starting

Technical Field

The utility model belongs to the technical field of the emergent start-up technique of car and specifically relates to a be applied to emergent start-up line relay circuit that starts of car.

Background

With the progress of social development, more and more people own their own automobiles. Nowadays, automobiles are very popular, and as a novel vehicle, the automobile brings great convenience to people. The automobile technology is mature enough to enable a self-driving tour to be fashionable, but the automobile can be started in the field possibly, even dangerous, particularly, the automobile can not be started frequently in cold weather, at the moment, the automobile emergency starting power supply is ready to be transported, the circuit structure of the starting line between the automobile and the emergency starting power supply is simple, and the effective protection of the emergency starting power supply can not be realized on the automobile rescuing line of the automobile emergency starting power supply.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

Preferably, the MCU control module includes a control chip with a model of "SC 91F 712M", a capacitor C4 is connected between the 1 st pin and the 14 th pin of the control chip, the 1 st pin of the control chip is grounded, and the 14 th pin of the control chip is connected to a high level.

Preferably, the anti-reverse coupling module comprises a photoelectric coupler with the model number of "opto iso 1", a diode D2, a resistor R0, a resistor R1 and a resistor R2, the 1 st pin of the photoelectric coupler is connected with the resistor R0 and the resistor R1, the resistor R0 and the resistor R1 are connected with the negative lead of the starting line, the 1 st pin of the photoelectric coupler is further connected with the cathode of the diode D2, the anode of the diode D2 is connected with the positive lead of the starting line and the 2 nd pin of the photoelectric coupler, the 3 rd pin of the photoelectric coupler is connected with the 7 th pin of the control chip, the 3 rd pin of the photoelectric coupler is further connected with the resistor R2, the resistor R2 is further connected with a high level, and the 4 th pin of the photoelectric coupler is connected with the negative lead of the starting line.

Preferably, the input and output voltage detection module includes a diode D4, a resistor R7, a resistor R4, a resistor R5, a resistor R8 and a diode D5, an anode of the diode D4 is connected to a positive-level wire of a start line, a cathode of the diode D4 is connected to the resistor R7, a resistor R7 is connected to the resistor R4, a resistor R4 is connected to a negative-level wire of the start line, and the resistor R7 and the resistor R4 are connected to an 11 th pin of the control chip; the anode of the diode D5 is connected to the positive lead of the starting line, the cathode of the diode D5 is connected to the resistor R8, the resistor R8 is connected to the resistor R5, the resistor R5 is connected to the negative lead of the starting line, and the resistor R8 and the resistor R5 are connected to the 12 th pin of the control chip.

Preferably, the temperature detection module comprises a thermistor PTC1, a resistor R9 and a diode D6, the thermistor PTC1 is connected to a negative lead of a start line, the thermistor PTC1 is connected with the resistor R9, the thermistor PTC1 is connected with the resistor R9, and is connected with a 13 th pin of the control chip, the resistor R9 is connected with a cathode of the diode D6, and an anode of the diode D6 is connected to a high level.

Preferably, the relay circuit on/off driving module comprises a transistor Q1, a resistor R16 and a resistor R17, the base of the transistor Q1 is connected with the 8 th pin of the control chip through a resistor R16, the resistor R17 is connected between the base and the emitter of the transistor Q1, the emitter of the transistor Q1 is grounded, and the collector of the transistor Q1 is connected with the relay module.

Preferably, the relay module comprises a relay RLY1, the positive lead of the starting line passes through the normally open contact of the relay RLY1, the reverse connection prevention module is connected to the positive lead of the starting line on one side of the normally open contact of the relay RLY1, the input and output voltage detection module is connected to the positive lead of the starting line on the other side of the normally open contact of the relay RLY1, the 1 st coil end of the relay RLY1 is connected with the relay circuit opening/closing driving module, and the 2 nd coil end of the relay RLY1 is connected into the positive lead of the starting line.

Preferably, the status display module includes a resistor R12, a resistor R13, a resistor R14, a resistor R15, an LED1, an LED2, an LED3 and an LED4, anodes of the LEDs 1, the LED2, the LED3 and the LED4 are connected to a high level, cathodes of the LEDs 1, the LED2, the LED3 and the LED4 are respectively connected to the resistor R15, the resistor R14, the resistor R13 and the resistor R12, and the resistor R15, the resistor R14, the resistor R13 and the resistor R12 are respectively connected to a 2 nd pin, a 3 rd pin, a 4 th pin and a 5 th pin of the control chip.

Compared with the prior art, the beneficial effects of the utility model are that:

the mobile power supply can be effectively protected, the temperature of the circuit can be detected in real time through the temperature detection module, when the temperature is too high due to too large current, a signal is transmitted to the MCU control module in time, and the MCU control module controls the on-off of the positive lead of the starting wire through the relay to safely protect the circuit; the working state of the MCU control module can be displayed through the state display module; the input and output power supply detection module can detect the voltage and the current between the positive electrode and the negative electrode in real time, when the voltage and the current of the positive electrode and the negative electrode are overlarge, the input and output power supply detection module transmits a signal to the MCU control module, and then the MCU control module controls the on-off of a positive electrode lead of the starting wire through the relay to carry out safety protection on the circuit; wherein input/output voltage detection module can also carry out low-voltage automated inspection to the voltage of car storage battery, can detect the low-voltage more than 1.5V at least, need not on-off control, has made things convenient for user operation greatly, the utility model discloses MCU control module preferably adopts intelligent SC91F712M chip, and following multiple protect function can be implemented through predetermined procedure to this chip: the emergency power supply protection circuit has multiple functions of reverse charging protection (preventing an automobile storage battery from reversely charging an emergency power supply), output positive and negative short circuit protection (preventing the emergency power supply from being burnt out due to overlarge current caused by short circuit), forced power-off protection (preventing the emergency power supply from being excessively discharged due to overtime connection) within 45 seconds, sparkless connection protection (preventing sparks from being generated during wiring), positive and negative reverse connection protection (generating protection when the positive and negative electrodes are reversely connected), low-voltage protection (preventing the emergency power supply from being excessively discharged) and the like.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic diagram of the circuit module of the present invention.

Fig. 2 is a schematic diagram of the circuit structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, in an embodiment of the present invention, a starting line relay circuit applied to an emergency start of an automobile includes a starting line 9, where the starting line 9 includes a positive-level wire and a negative-level wire, and further includes an anti-reverse connection module 2, an input/output voltage detection module 3, a temperature detection module 4, an MCU control module 1, a relay on/off driving module 6, a relay module 5, and an LDO module 8; prevent reverse-connection module 2, input/output voltage detection module 3, temperature detection module 4 connects gradually between the positive negative pole wire of start-up line 9, prevent reverse-connection module 2, input/output voltage detection module 3, temperature detection module 4 is connected to MCU control module 1 separately, MCU control module 1 is connected to positive pole wire through relay circuit on/off drive module 6 and relay circuit after, still include LDO module 8, LDO module 8's input connection terminal battery, LDO module 8's output is supplied power to the MCU module, still include state display module 7, state display module 7 is connected with MCU control module 1.

Further as shown in fig. 2, the MCU control module 1 includes a control chip with a model of "SC 91F 712M", a capacitor C4 is connected between the 1 st pin and the 14 th pin of the control chip, the 1 st pin of the control chip is grounded, and the 14 th pin of the control chip is connected to a high level.

As further shown in fig. 2, the anti-reverse connection module 2 includes a photocoupler with a model number of "opto iso 1", a diode D2, a resistor R0, a resistor R1 and a resistor R2, a 1 st pin of the photocoupler is connected with the resistor R0 and the resistor R1, the resistor R0 and the resistor R1 are connected with a negative lead of the starting line 9, a 1 st pin of the photocoupler is also connected with a cathode of the diode D2, an anode of the diode D2 is connected with a positive lead of the starting line 9 and a 2 nd pin of the photocoupler, a 3 rd pin of the photocoupler is connected with a 7 th pin of the control chip, a 3 rd pin of the photocoupler is also connected with the resistor R2, the resistor R2 is also connected with a high level, and a 4 th pin of the photocoupler is connected with a negative lead of the starting line 9.

As further shown in fig. 2, the input/output voltage detection module 3 includes a diode D4, a resistor R7, a resistor R4, a resistor R5, a resistor R8, and a diode D5, an anode of the diode D4 is connected to a positive-level wire of the start line 9, a cathode of the diode D4 is connected to the resistor R7, a resistor R7 is connected to the resistor R4, a resistor R4 is connected to a negative-level wire of the start line 9, and the resistor R7 and the resistor R4 are connected to a 11 th pin of the control chip; the anode of the diode D5 is connected to the positive lead of the starting line 9, the cathode of the diode D5 is connected to the resistor R8, the resistor R8 is connected to the resistor R5, the resistor R5 is connected to the negative lead of the starting line 9, and the resistor R8 and the resistor R5 are connected to the 12 th pin of the control chip.

As further shown in fig. 2, the temperature detecting module 4 includes a thermistor PTC1, a resistor R9, and a diode D6, the thermistor PTC1 is connected to the negative lead of the start line 9, the thermistor PTC1 is connected to the resistor R9, the thermistor PTC1 and the resistor R9 are connected to the 13 th pin of the control chip, the resistor R9 is connected to the cathode of the diode D6, and the anode of the diode D6 is connected to a high level.

As further shown in fig. 2, the relay circuit on/off driving module 6 includes a transistor Q1, a resistor R16, and a resistor R17, wherein a base of the transistor Q1 is connected to the 8 th pin of the control chip through a resistor R16, the resistor R17 is connected between the base and an emitter of the transistor Q1, the emitter of the transistor Q1 is grounded, and a collector of the transistor Q1 is connected to the relay module 5.

As further shown in fig. 2, the relay module 5 includes a relay RLY1, the positive wire of the starting line 9 passes through the normally open contact of the relay RLY1, the reverse connection prevention module 2 is connected to the positive wire of the starting line 9 on one side of the normally open contact of the relay RLY1, the input and output voltage detection module 3 is connected to the positive wire of the starting line 9 on the other side of the normally open contact of the relay RLY1, the 1 st coil end of the relay RLY1 is connected to the relay on/off driving module 6, and the 2 nd coil end of the relay RLY1 is connected to the positive wire of the starting line 9.

As further shown in fig. 2, the status display module 7 includes a resistor R12, a resistor R13, a resistor R14, a resistor R15, an LED1, an LED2, an LED3, and an LED4, anodes of the LEDs 1, the LEDs 2, the LEDs 3, and the LEDs 4 are connected to a high level, cathodes of the LEDs 1, the LEDs 2, the LEDs 3, and the LEDs 4 are respectively connected to the resistor R15, the resistor R14, the resistor R13, and the resistor R12, and the resistor R15, the resistor R14, the resistor R13, and the resistor R12 are respectively connected to a 2 nd pin, a 3 rd pin, a 4 th pin, and a 5 th pin of the control chip.

In this embodiment, the circuit is arranged on a rescue line of an automobile emergency starting power supply terminal, and can effectively protect a mobile power supply, specifically, when a positive electrode line and a negative electrode line of a starting line 9 are reversely connected or reversely charged, the MCU control module 1 controls the on-off of a positive electrode lead of the starting line 9 through the relay module 5 to safely protect the power supply terminal; the circuit temperature can be detected in real time through the temperature detection module 4, when the temperature is too high due to too large current, a signal is transmitted to the MCU control module 1 in time, and the MCU control module 1 controls the on-off of the positive lead of the starting wire 9 through a relay to carry out safety protection on the circuit; the working state of the MCU control module 1 can be displayed through the state display module 7; through input/output power supply detection module, can real-time detection just, when positive negative pole voltage, electric current were too big, input/output power supply detection module gives MCU control module 1 with the signal transmission, and then MCU control module 1 carries out safety protection to the circuit through the break-make of the anodal wire of relay control start-up line 9.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A starting line relay circuit applied to automobile emergency starting comprises a starting line, wherein the starting line comprises a positive-level lead and a negative-level lead, and is characterized by further comprising a reverse connection prevention module, an input and output voltage detection module, a temperature detection module, an MCU control module, a relay circuit on/off driving module, a relay module and an LDO module; the anti-reverse connection module, the input and output voltage detection module and the temperature detection module are sequentially connected between positive and negative leads of the starting line, the anti-reverse connection module, the input and output voltage detection module and the temperature detection module are respectively connected to the MCU control module, the MCU control module is connected to the positive lead through the relay circuit on/off driving module and the relay circuit, the anti-reverse connection module further comprises an LDO module, an input end of the LDO module is connected with a terminal battery, an output end of the LDO module supplies power to the MCU module, and the anti-reverse connection module further comprises a state display module, and the state display module is connected with the MCU control module.

2. The starting line relay circuit applied to the emergency starting of the automobile as claimed in claim 1, wherein the MCU control module includes a control chip of type "SC 91F 712M", a capacitor C4 is connected between the 1 st pin and the 14 th pin of the control chip, the 1 st pin of the control chip is grounded, and the 14 th pin of the control chip is connected to a high level.

3. The starting line relay circuit applied to the emergency starting of the automobile as claimed in claim 2, wherein the reverse connection preventing module comprises a photocoupler of "opto iso 1", a diode D2, a resistor R0, a resistor R1 and a resistor R2, the 1 st pin of the photocoupler is connected with the resistor R0 and the resistor R1, the resistor R0 and the resistor R1 are connected with the negative lead of the starting line, the 1 st pin of the photocoupler is also connected with the cathode of the diode D2, the anode of the diode D2 is connected with the positive lead of the starting line and the 2 nd pin of the photocoupler, the 3 rd pin of the photocoupler is connected with the 7 th pin of the control chip, the 3 rd pin of the photocoupler is also connected with the resistor R2, the resistor R2 is also connected with a high level, and the 4 th pin of the photocoupler is connected with the negative lead of the starting line.

4. The starting line relay circuit applied to the emergency starting of the automobile as claimed in claim 2, wherein the input and output voltage detection module comprises a diode D4, a resistor R7, a resistor R4, a resistor R5, a resistor R8 and a diode D5, wherein an anode of the diode D4 is connected to a positive-level lead of the starting line, a cathode of the diode D4 is connected to the resistor R7, a resistor R7 is connected to the resistor R4, a resistor R4 is connected to a negative-level lead of the starting line, and the resistor R7 and the resistor R4 are connected to a pin 11 of the control chip; the anode of the diode D5 is connected to the positive lead of the starting line, the cathode of the diode D5 is connected to the resistor R8, the resistor R8 is connected to the resistor R5, the resistor R5 is connected to the negative lead of the starting line, and the resistor R8 and the resistor R5 are connected to the 12 th pin of the control chip.

5. The starting line relay circuit applied to the emergency starting of the automobile as claimed in claim 2, wherein the temperature detection module comprises a thermistor PTC1, a resistor R9 and a diode D6, the thermistor PTC1 is connected to the negative lead of the starting line, the thermistor PTC1 is connected to the resistor R9, the thermistor PTC1 and the resistor R9 are connected to the 13 th pin of the control chip, the resistor R9 is connected to the cathode of the diode D6, and the anode of the diode D6 is connected to a high level.

6. The relay circuit of claim 2, wherein the relay circuit on/off driving module comprises a transistor Q1, a resistor R16 and a resistor R17, a base of the transistor Q1 is connected to the 8 th pin of the control chip through a resistor R16, a resistor R17 is connected between a base and an emitter of the transistor Q1, an emitter of the transistor Q1 is grounded, and a collector of the transistor Q1 is connected to the relay module.

7. The starting line relay circuit applied to the emergency starting of the automobile as claimed in claim 1, wherein the relay module comprises a relay RLY1, the positive lead of the starting line passes through the normally open contact of the relay RLY1, the reverse connection prevention module is connected to the positive lead of the starting line on one side of the normally open contact of the relay RLY1, the input and output voltage detection module is connected to the positive lead of the starting line on the other side of the normally open contact of the relay RLY1, the 1 st coil end of the relay RLY1 is connected to the relay on/off driving module, and the 2 nd coil end of the relay RLY1 is connected to the positive lead of the starting line.

8. The starting line relay circuit applied to the emergency starting of the automobile as claimed in claim 2, wherein the status display module includes a resistor R12, a resistor R13, a resistor R14, a resistor R15, an LED1, an LED2, an LED3, and an LED4, anodes of the LED1, the LED2, the LED3, and the LED4 are connected to a high level, cathodes of the LED1, the LED2, the LED3, and the LED4 are respectively connected to the resistor R15, the resistor R14, the resistor R13, and the resistor R12, and the resistor R15, the resistor R14, the resistor R13, and the resistor R12 are respectively connected to the 2 nd pin, the 3 rd pin, the 4 th pin, and the 5 th pin of the control chip.