CN210212290U

CN210212290U - Automobile control circuit

Info

Publication number: CN210212290U
Application number: CN201921141282.1U
Authority: CN
Inventors: Limin Jiao; 焦利民; Hongbin Zhu; 朱宏斌; Shiyuan Chen; 陈世元; Bin Xu; 许斌; Xiaoling Xu; 徐晓玲
Original assignee: Jv Sves
Current assignee: Jv Sves; Shanghai Valeo Automotive Electrical Systems Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-03-31
Anticipated expiration: 2029-07-19

Abstract

The embodiment of the utility model discloses car control circuit, this car control circuit includes: a first battery for providing a supply voltage; the automobile generator is sequentially connected with the second switch and the first switch in series and connected to the first storage battery; the first vehicle load is connected with the first storage battery in series through the third switch and the first switch in sequence; the second vehicle load is connected with the first storage battery in series through the first switch, the second vehicle load comprises an electric control board connected with a vehicle sensor, and the electric control board generates a first switch signal after the vehicle sensor detects that the first storage battery is abnormally high in voltage and temperature or the vehicle collides; and the controller is connected to the control ends of the first switch, the second switch and the third switch and the electric control board, and controls the second switch and the third switch to be switched off according to the first switch signal. The embodiment of the utility model provides a disconnectable generator and unnecessary electrical apparatus withdraw with making things convenient for the passenger with avoiding the trouble to worsen when having realized the car trouble.

Description

Automobile control circuit

Technical Field

The embodiment of the utility model provides a relate to the automobile field, especially relate to an automobile control circuit.

Background

An automobile is a vehicle driven by a self-equipped power unit, generally having four or more wheels, and traveling on land without depending on a rail or an overhead line.

In the existing automobile, a generator, an electrical appliance and a storage battery are permanently connected, or an independent switch is arranged at a position where the storage battery is connected to a main loop of an automobile power grid to ensure the safety of the automobile power grid.

When the automobile has a collision accident, the generator of the automobile has a high-voltage fault, the storage battery expands or even explodes due to overhigh charging voltage, the electric appliance also has a fault due to the high voltage, at the moment, the automobile has no way to disconnect the generator and the electric appliance to delay the fault so as to reduce the automobile loss and enable passengers to evacuate in time, and if an independent switch is arranged, when all the electric appliances are disconnected, the automobile cannot normally work, and the passengers can not safely evacuate the automobile.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a car control circuit to but break off the generator when realizing the car break down with unnecessary with electrical apparatus in order to avoid the trouble to worsen and make things convenient for the passenger to withdraw.

To this end, the embodiment of the present invention provides an automobile control circuit, which includes:

a first battery for providing a supply voltage; the automobile generator is sequentially connected with the second switch and the first switch in series and connected to the first storage battery; the first vehicle load is connected with the first storage battery in series through the third switch and the first switch in sequence; the second vehicle load is connected with the first storage battery in series through the first switch, the second vehicle load comprises an electric control board connected with a vehicle sensor, and the electric control board generates a first switch signal after the vehicle sensor detects that the vehicle is in abnormal high voltage, high temperature or collision; and the controller is connected to the control ends of the first switch, the second switch and the third switch and the electric control board, and controls the second switch and the third switch to be switched off according to the first switch signal.

Further, the controller includes a logic circuit, the logic circuit includes a driving circuit and an electronic switch, the electronic switch includes a first electronic switch, a second electronic switch and a third electronic switch, the logic circuit generates an output signal to the driving circuit according to a first switch signal, so that the driving circuit controls the first switch through the first electronic switch, controls the second switch through the second electronic switch, and controls the third switch through the third electronic switch.

Preferably, the sensor for a vehicle includes a temperature sensor connected to the controller, the logic circuit generates a second switch signal when the temperature of the detection position is excessively high, controls the first switch to be turned off according to the second switch signal when the vehicle is locked, and controls the second switch and the third switch to be turned off according to the second switch signal when the vehicle is unlocked.

Further, the first storage battery is connected to the controller, when the voltage of the first storage battery is too high in the automobile unlocking state, the logic circuit generates a third switch signal, and the logic circuit controls the second switch and the third switch to be switched off according to the third switch signal.

Further, the automobile control circuit further comprises an automobile locking switch, when the automobile is locked, the automobile locking switch is switched off, the driving circuit cannot drive the second switch and the third switch, when the automobile is unlocked, the automobile locking switch is switched on, and the driving circuit cannot drive the first switch.

Preferably, the controller further comprises a local area internet decoding circuit connected with a local area internet communication terminal, and the electric control board and the first storage battery are in communication connection with the logic circuit through the local area internet communication terminal.

Preferably, the controller further includes a normally closed relay including a first normally closed relay controlling the first switch, a second normally closed relay controlling the second switch, and a third normally closed relay controlling the third switch.

Furthermore, the logic circuit comprises a first comparator, a first reference power supply, a second reference power supply, a gate circuit and a driving circuit, wherein the positive electrode of the first storage battery and the first reference power supply are connected into the first comparator, the first comparator generates a third switching signal and inputs the third switching signal into the gate circuit, the temperature sensor and the second reference power supply are connected into the second comparator, the second comparator generates a second switching signal and inputs the second switching signal into the gate circuit, the electric control board generates a third switching signal and inputs the third switching signal into the gate circuit, and the gate circuit drives the driving circuit according to the first switching signal, the second switching signal and the third switching signal.

Preferably, the logic circuit comprises a microprocessor, a first reference power supply, a first driving circuit and a second driving circuit, the anode of the first storage battery, the first reference power supply, the temperature sensor, the electric control board and the automobile locking switch are connected to the microprocessor, the electric control board generates a first switching signal and inputs the first switching signal to the microprocessor, the microprocessor generates a second switching signal and a third switching signal and inputs the second switching signal and the third switching signal to the second driving circuit, and the microprocessor drives the first driving circuit and the second driving circuit according to the first switching signal, the second switching signal and the third switching signal.

Further, the logic circuit further comprises a third comparator and a reference signal circuit, the reference signal circuit is connected with the microprocessor and the third comparator, the third comparator is connected with the first driving circuit and the second driving circuit, and the third comparator is used for comparing a feedback signal of the temperature sensor with the first reference signal provided by the reference signal circuit to generate a second switching signal to drive the first driving circuit.

Further, the automobile control circuit also comprises a second storage battery which is connected with a sixth switch and a second switch in series in sequence and is connected to the automobile generator; the direct-current transformer is sequentially connected with a fifth switch and the first switch in series and connected to the first storage battery, the automobile generator is connected with the second switch in series and connected to the direct-current transformer, and the direct-current transformer is used for converting the voltage of the second storage battery into the voltage of the first storage battery or converting the voltage of the first storage battery into the voltage of the second storage battery; a third vehicle load connected in series with a fourth switch to the DC transformer; and the fourth vehicle load is connected in series to the direct current transformer.

The embodiment of the utility model provides a detect the unusual high voltage of car, the unusual high temperature of car or the car bumps the back through automobile-used sensor, automatically controlled board generates first switching signal, and the controller breaks off second switch and third switch according to first switching signal control, but break off when having realized the car break down the generator with unnecessary with electrical apparatus in order to avoid the trouble to worsen and make things convenient for the passenger to withdraw.

Drawings

Fig. 1 is a schematic diagram of an automobile control circuit according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of a controller in an automobile control circuit according to a second embodiment of the present invention;

fig. 3 is a schematic diagram of a controller in an automobile control circuit according to a third embodiment of the present invention;

fig. 4 is a schematic diagram of a logic circuit in an automobile control circuit according to a fourth embodiment of the present invention;

fig. 5 is a schematic diagram of a logic circuit in an automobile control circuit according to a fifth embodiment of the present invention;

fig. 6 is a schematic diagram of a logic circuit in an automobile control circuit according to a sixth embodiment of the present invention;

fig. 7 is a schematic diagram of a logic circuit in an automobile control circuit according to a seventh embodiment of the present invention;

fig. 8 is a schematic diagram of a logic circuit in an automobile control circuit according to an eighth embodiment of the present invention;

fig. 9 is a schematic diagram of an automobile control circuit according to a ninth embodiment of the present invention;

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, elements, or the like, but the orientations, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, a first speed difference may be referred to as a second speed difference, and similarly, a second speed difference may be referred to as a first speed difference, without departing from the scope of the present application. The first speed difference and the second speed difference are both speed differences, but they are not the same speed difference. The terms "first", "second", etc. are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Example one

As shown in fig. 1, a first embodiment of the present invention provides an automobile control circuit, which includes a first battery 100, an automobile generator 200, a first automobile load 300, a second automobile load 400, and a controller 500.

The first battery 100 is used to provide a supply voltage; the automobile generator 200 is connected with the first storage battery 100 in series through a second switch 502 and a first switch 501; the first vehicular load 300 is connected to the first battery 100 in series with the third switch 503 and the first switch 501 in this order; the second vehicle load 400 is connected in series with the first switch 501 to the first battery 100, the second vehicle load 400 comprises an electric control board 410 connected with a vehicle sensor, and the electric control board 410 generates a first switch signal when the vehicle sensor detects abnormal high voltage of the first battery 100, abnormal high temperature of the automobile or collision of the automobile; the controller 500 is connected to control terminals of the first switch 501, the second switch 502 and the third switch 503 and the electric control board 410, and the controller 500 controls to open the second switch 502 and the third switch 503 according to a first switch signal.

In this embodiment, the first battery 100 is an energy storage device of the vehicle, and is used for starting the engine of the vehicle, and when the engine of the vehicle is not working, the first battery 100 can also provide power for the first vehicle load 300 and the second vehicle load 400. When the engine of the vehicle is started, the vehicle generator 200 obtains mechanical energy from the transmission belt, the generator converts the mechanical energy into alternating current through electromagnetic conversion, and then converts the alternating current into direct current for the first vehicle load 300 and the second vehicle load 400 and the first battery 100 to store energy, when the output voltage of the vehicle generator 200 to the first vehicle load 300 and the second vehicle load 400 is too high, the current is divided into the first battery 100, so the first battery 100 also plays a role in balancing the circuit voltage. The first vehicular load 300 includes a multifunctional entertainment system and an air conditioner of the vehicle, and the first vehicular load 300 is an unnecessary electrical appliance of the vehicle, i.e., the normal operation of the vehicle is not affected by turning off the switch of the first vehicular load 300. The second vehicle load 400 includes an electric control board 410, a meter, a door, an electric spray and an ignition device, and the second vehicle load 400 is a necessary electrical appliance of the vehicle, that is, the normal operation of the vehicle, such as normal driving and opening of the door, is affected by opening and closing the second vehicle load 400. The first switch 501 is used to control the connection of the first battery 100 to the vehicle circuit, the second switch 502 is used to control the connection of the vehicle generator 200 to the vehicle circuit, and the third switch 503 is used to control the connection of the first vehicle load 300 to the vehicle circuit.

Further, the electric control board 410 is used for controlling the operation of the automotive electric appliance, and the automotive electric appliance is electrically connected with the electric control board 410, wherein the automotive electric appliance comprises automotive sensors, the automotive sensors are also electrically connected with the electric control board 410, and when the automotive sensors detect that the automobile is in abnormal high voltage, the automobile is in abnormal high temperature or the automobile is collided, the electric control board 410 generates a first switching signal; the controller 500 is connected to the control terminals of the first switch 501, the second switch 502 and the third switch 503 and the electric control board 410, the controller 500 controls the second switch 502 and the third switch 503 to be turned off according to the first switch signal, at this time, the first storage battery 100 can still provide power for the second vehicle load 400, so that passengers can continue to drive the vehicle to a safe position and open the doors of the vehicle for evacuation, meanwhile, the controller 500 generates a state signal to be fed back to the electric control board 410, and the electric control board 410 converts the state signal into visual information to be displayed on the display screen of the vehicle.

Preferably, the static consumption of controller 500 is less than 0.5mA to ensure that controller 500 does not consume excessive power from first battery 100 during long-term parking conditions of the vehicle.

The embodiment of the utility model provides a detect the unusual high voltage of car, the unusual high temperature of car or the car bumps the back through automobile-used sensor, automatically controlled board 410 generates first switching signal, and controller 500 breaks off second switch 502 and third switch 503 according to first switching signal control, but break off when having realized the car break down the generator with unnecessary with electrical apparatus in order to avoid the trouble to worsen and make things convenient for the passenger to withdraw.

Example two

As shown in fig. 2, the second embodiment of the present invention is directed to a further description of the controller 500 based on the first embodiment of the present invention.

In this embodiment, the controller 500 includes a logic circuit 510, the logic circuit 510 includes a driving circuit 520 and an electronic switch 530, the electronic switch 530 includes a first electronic switch 521, a second electronic switch 522 and a third electronic switch 523, the logic circuit 510 generates an output signal to the driving circuit 520 according to the first switch signal, so that the driving circuit 520 controls the first switch 501 through the first electronic switch 521, controls the second switch 502 through the second electronic switch 522, and controls the third switch 503 through the third electronic switch 523.

The sensor for a vehicle includes a temperature sensor 420, the temperature sensor 420 is connected to the controller 500, the logic circuit 510 generates a second switch signal when the temperature of the detected position is too high, the logic circuit 510 controls to open the first switch 501 according to the second switch signal when the vehicle is locked, and the logic circuit 510 controls to open the second switch 502 and the third switch 503 according to the second switch signal when the vehicle is unlocked.

Further, the first battery 100 is connected to the controller 500, and when the voltage of the first battery 100 is too high in the unlocked state of the vehicle, the logic circuit 510 generates a third switch signal, and the logic circuit 510 controls the second switch 502 and the third switch 503 to be turned off according to the third switch signal.

Further, the car control circuit further comprises a car locking switch 120, when the car is locked, the car locking switch 120 is opened, the driving circuit 520 cannot drive the second switch 502 and the third switch 503, when the car is unlocked, the car locking switch 120 is closed, and the driving circuit 520 cannot drive the first switch 501.

Specifically, the temperature sensor 420 may be disposed at various locations of the vehicle, especially at locations where the vehicle may be seriously damaged due to abnormally high temperature, but there is no location where the electrical appliance with the temperature sensor 420 can detect, such as an exhaust port, an oil tank, and an engine compartment of the vehicle. The temperature sensor 420 detects the temperature at its location and sends an input signal to the controller 500.

On the first hand, when the automobile is in a locked state, that is, the automobile is not unlocked by the automobile key, the automobile locking switch 120 is turned off, the driving circuit 520 cannot drive the second switch 502 and the third switch 503, the logic circuit 510 converts the signal of the temperature sensor 420 into a voltage value and compares the voltage value with the reference voltage source 110, specifically, the temperature sensor 420 is disposed in the engine compartment, when the automobile is in the locked state, the engine is not started, and therefore the automobile generator 200 cannot output, the electronic control board 410 is also in a sleep state, the reference voltage source 110 can be set in the logic circuit 510 to be a voltage value corresponding to 500 degrees celsius, when the logic circuit 510 judges that the temperature detected by the temperature sensor 420 is higher than 500 degrees celsius, the logic circuit 510 generates a second switching signal to the driving circuit 520, so that the driving circuit 520 controls the first switch 501 to be turned off through the first electronic switch 521, meanwhile, the logic circuit 510 generates a status signal and feeds the status signal back to the electronic control board 410, and the electronic control board 410 converts the status signal into visual information to be displayed on the display screen of the automobile.

When the automobile is in an unlocked state, that is, the automobile is unlocked by a key, the automobile locking switch 120 is closed, the driving circuit 520 cannot drive the first switch 501, the logic circuit 510 converts a signal of the temperature sensor 420 into a voltage value and compares the voltage value with the reference voltage source 110, specifically, the temperature sensor 420 is arranged in the engine compartment, when the automobile is in the unlocked state, the reference voltage source 110 of the logic circuit 510 can be set to be a voltage value corresponding to 500 degrees centigrade, when the logic circuit 510 judges that the temperature detected by the temperature sensor 420 is higher than 500 degrees centigrade, the logic circuit 510 generates a second switch signal to the driving circuit 520, so that the driving circuit 520 controls the second switch 502 to be switched off through the second electronic switch 522, controls the third switch 523 to be switched off through the third electronic switch, and simultaneously, the logic circuit 510 generates a state signal to be fed back to the electronic control board 503, the electronic control board 410 converts the status signal into visual information to be displayed on the display screen of the automobile.

Preferably, the electronic switch 530 includes a MOS transistor.

On the other hand, when the vehicle is in a locked state, that is, when the vehicle is not unlocked by the vehicle key, the vehicle lock switch 120 is turned off, the drive circuit 520 cannot drive the second switch 502 and the third switch 503, the engine is not started, and therefore the vehicle generator 200 cannot output, and the electronic control panel 410 is also in a sleep state, and therefore, there is no abnormal high voltage.

When the automobile is in an unlocked state, i.e. the automobile is unlocked by the automobile key, the automobile locking switch 120 is closed, the driving circuit 520 cannot drive the first switch 501, the positive pole of the first storage battery 100 is connected with the signal circuit of the logic circuit 510, the first storage battery 100 transmits a voltage value signal to the logic circuit 510, the normal voltage value of the first storage battery 100 is 12V, the logic circuit 510 may be configured to set the reference voltage source 110 to 18V, and when the logic circuit 510 determines that the voltage value of the first battery 100 is higher than 18V, the logic circuit 510 generates a third switch signal to the driving circuit 520, which causes the driving circuit 520 to control the second switch 502 to turn off via the second electronic switch 522, to control the third switch 503 to turn off via the third electronic switch 523, meanwhile, the logic circuit 510 generates a status signal and feeds the status signal back to the electronic control board 410, and the electronic control board 410 converts the status signal into visual information to be displayed on the display screen of the automobile.

Preferably, the controller 500 further includes a normally closed relay 540, the normally closed relay 540 including a first normally closed relay 531 controlling the first switch 501, a second normally closed relay 532 controlling the second switch 502, and a third normally closed relay 533 controlling the third switch 503.

Specifically, the driving circuit 520 drives the first normally closed relay 531 through the first electronic switch 521 to control the first switch 501 to open, drives the second normally closed relay 532 through the second electronic switch 522 to control the second switch 502 to open, and drives the third normally closed relay 533 through the third electronic switch 523 to control the third switch 503 to open. In one embodiment, a first normally closed relay 531 is integrated in the first switch 501, a second normally closed relay 532 is integrated in the second switch 502, and a third normally closed relay 533 is integrated in the third switch 503. The terminal voltage drop of the electronic switch 530 is about 0.1V-1V, the contact voltage drop of the normally closed relay 540 is about 0.01V or less, and the terminal voltage drop of the electronic switch 530 is much higher than the contact voltage drop of the normally closed relay 540, so that the normally closed relay 540 is arranged to reduce the voltage drop and the line loss in the circuit, and when the current in the circuit is 100A, the normally closed relay 540 is arranged to reduce the electric power loss above 10W.

In another optional embodiment, the driving circuit can also be directly controlled to be switched off by the first electronic switch, the second electronic switch is controlled to be switched off by the second electronic switch, and the third electronic switch is controlled to be switched off by the third electronic switch, so that a normally closed relay is omitted, and the circuit of the automobile is simplified.

In another alternative embodiment, the driving circuit may also be directly enabled to drive the first normally closed relay through the first electronic switch to control the first switch to be opened, drive the second normally closed relay through the second electronic switch to control the second switch, and drive the third normally closed relay through the second electronic switch to control the third switch to be opened, wherein the second electronic switch includes two pairs of contacts to control the second normally closed relay and the third normally closed relay respectively.

EXAMPLE III

As shown in fig. 3, the third embodiment of the present invention is on the basis of the first embodiment of the present invention, the controller 500 is further described, and the third embodiment of the present invention is also an alternative embodiment of the second embodiment of the present invention.

Further, the controller 500 further includes a lan decoding circuit 550 connected to a lan communication terminal 560, and the electronic control board 410 and the first battery 100 are communicatively connected to the logic circuit 510 through the lan communication terminal 560.

Specifically, the electric control board 410 is used for controlling the work of the automobile electric appliance, the first storage battery 100 and the electric control board 410 are communicated through the local area internet decoding circuit 550 connected with the local area internet communication terminal 560, the local area internet decoding circuit 550 is a low-cost serial communication network, bidirectional communication and information transmission of multi-field data frames can be achieved, communication is conducted through digital signals of the local area internet decoding circuit 550 connected with the local area internet communication terminal 560 and the logic circuit 510, the speed of the communication can reach 19.2kbits/s, the electric connection mode of the logic circuit 510 and the automobile circuit is simplified, and the transmission speed of the electric control board can be increased.

In this embodiment, the temperature sensor 420 may be disposed at various positions of the vehicle, especially at the position where the vehicle may be seriously damaged due to abnormally high temperature, but there is no position where the electrical appliance with the temperature sensor 420 can detect, such as the exhaust port, the oil tank, and the engine compartment of the vehicle. The temperature sensor 420 detects the temperature at its location and sends an input signal to the controller 500.

On the first hand, when the automobile is in a locked state, that is, the automobile is not unlocked by the automobile key, the driving circuit 520 cannot drive the second switch 502 and the third switch 503, the logic circuit 510 converts the signal of the temperature sensor 420 into a voltage value and compares the voltage value with the reference voltage source 110, specifically, the temperature sensor 420 is disposed in the engine compartment, when the automobile is in the locked state, the engine is not started, and therefore the automobile generator 200 cannot output, the electronic control board 410 is also in a sleep state, the reference voltage source 110 may be set in the logic circuit 510 to correspond to a reference voltage of 500 degrees celsius, when the logic circuit 510 judges that the temperature detected by the temperature sensor 420 is higher than 500 degrees celsius, the logic circuit 510 generates a second switching signal to the driving circuit 520, so that the driving circuit 520 controls the first switch 501 to be turned off through the first electronic switch 521, and at the same time, the logic circuit 510 generates a status signal and keeps the status signal, after the automobile is unlocked, the logic circuit 510 feeds the status signal back to the local area internet decoding circuit 550, the local area internet decoding circuit 550 feeds the status signal back to the electric control board 410 through the local area internet communication terminal 560, and the electric control board 410 converts the status signal into visual information to be displayed on the automobile display screen.

When the automobile is in an unlocked state, that is, when the automobile is unlocked by a key, the local area internet communication terminal 560 receives an unlocked digital signal and transmits the unlocked digital signal to the local area internet decoding circuit 550 in the logic circuit 510, the local area internet decoding circuit 550 sends out a control signal, so that the driving circuit 520 cannot drive the first switch 501, but can drive the second switch 502 and the third switch 503, the logic circuit 510 converts a signal of the temperature sensor 420 into a voltage value and compares the voltage value with the reference voltage source 110, specifically, the temperature sensor 420 is arranged in an engine compartment, when the automobile is in the unlocked state, if the engine is started, the reference voltage source 110 of the logic circuit 510 can be set to be 500 degrees celsius, when the logic circuit 510 judges that the temperature detected by the temperature sensor 420 is higher than 500 degrees celsius, the logic circuit 510 generates a second switch signal to the driving circuit 520, the driving circuit 520 controls the second switch 502 to be switched off through the second electronic switch 522, controls the third switch 503 to be switched off through the third electronic switch 523, simultaneously, the logic circuit 510 generates a state signal to be fed back to the local area internet decoding circuit 550, the local area internet decoding circuit 550 feeds back to the electric control board 410 through the local area internet communication terminal 560, and the electric control board 410 converts the state signal into visual information to be displayed on the automobile display screen.

Preferably, the electronic switch 530 includes a MOS transistor.

When the car is in an unlocked state, that is, when the car is unlocked by a car key, the lan communication terminal 560 receives an unlocked digital signal and transmits the unlocked digital signal to the lan decoding circuit 550 in the logic circuit 510, the lan decoding circuit 550 sends a control signal, so that the driving circuit 520 cannot drive the first switch 501, but can drive the second switch 502 and the third switch 503, the driving circuit 520 cannot drive the first switch 501, the positive electrode of the first storage battery 100 is connected with the signal circuit of the logic circuit 510, the first storage battery 100 transmits a voltage value signal to the logic circuit 510, the normal voltage value of the first storage battery 100 is 12V, the reference voltage source 110 of the logic circuit 510 can be set to be 18V, when the logic circuit 510 judges that the voltage value of the first storage battery 100 is higher than 18V, the logic circuit 510 generates a third switch signal to the driving circuit 520, the driving circuit 520 controls the second switch 502 to be switched off through the second electronic switch 522, controls the third switch 503 to be switched off through the third electronic switch 523, simultaneously, the logic circuit 510 generates a state signal to be fed back to the local area internet decoding circuit 550, the local area internet decoding circuit 550 feeds back to the electric control board 410 through the local area internet communication terminal 560, and the electric control board 410 converts the state signal into visual information to be displayed on the automobile display screen.

On the other hand, when the vehicle sensor detects an abnormally high voltage of the vehicle, an abnormally high temperature of the vehicle, or a collision of the vehicle, the electronic control board 410 generates a first switching signal and transmits the first switching signal to the lan communication terminal 560, the lan communication terminal 560 transmits the first switching signal to the lan decoding circuit 550 in the logic circuit 510, and the logic circuit 510 accordingly controls the second switch 502 and the third switch 503 to be turned off according to the first switching signal.

Specifically, the driving circuit 520 drives the first normally closed relay 531 through the first electronic switch 521 to control the first switch 501 to open, drives the second normally closed relay 532 through the second electronic switch 522 to control the second switch 502 to open, and drives the third normally closed relay 533 through the third electronic switch 523 to control the third switch 503 to open, wherein the first normally closed relay 531 is integrated in the first switch 501, the second normally closed relay 532 is integrated in the second switch 502, and the third normally closed relay 533 is integrated in the third switch 503. The terminal voltage drop of the electronic switch 530 is about 0.1V-1V, the contact voltage drop of the normally closed relay 540 is about 0.01V or less, and the terminal voltage drop of the electronic switch 530 is much higher than the contact voltage drop of the normally closed relay 540, so that the normally closed relay 540 is arranged to reduce the voltage drop and the line loss in the circuit, and when the current in the circuit is 100A, the normally closed relay 540 is arranged to reduce the electric power loss above 10W.

Example four

As shown in fig. 4, the fourth embodiment of the present invention is based on the second embodiment of the present invention, and further describes the logic circuit 510.

In this embodiment, the logic circuit 510 includes a first comparator 105, a first reference power source 104, a second reference power source 422, a gate circuit 570, and a driving circuit 520, the positive electrode of the first battery 100 and the first reference power source 104 are connected to the first comparator 105, the first comparator 105 generates a third switching signal and inputs the third switching signal to the gate circuit 570, the temperature sensor 420 and the second reference power source 422 are connected to the second comparator 423, the second comparator 423 generates a second switching signal and inputs the second switching signal to the gate circuit 570, the electronic control board 410 generates the third switching signal and inputs the third switching signal to the gate circuit 570, and the gate circuit 570 drives the driving circuit 520 according to the first switching signal, the second switching signal, and the third switching signal.

Specifically, the positive electrode of the first battery 100 is connected to the logic circuit 510, and the voltage dividing circuit 101 and the filter circuit 102 are sequentially connected to one input end of the first comparator 105, inside the logic circuit 510, a node between the first battery 100 and the voltage dividing circuit 101 is connected to one end of the pull-up circuit 103 and one end of the first reference power source 104, the other end of the pull-up circuit 103 is connected to the electronic switch 530 to provide control power to the first electronic switch 521, the second electronic switch 522 and the third electronic switch 523, and the other end of the first reference power source 104 is connected to the other input end of the first comparator 105. The temperature sensor 420 is connected to the logic circuit 510, and is connected to the temperature voltage signal processing circuit 421 to an input terminal of the second comparator 423, a node between the first reference power supply 104 and the positive electrode of the first battery 100 is connected to one end of the second reference power supply 422, and the other end of the second reference power supply 422 is connected to the other input terminal of the second comparator 423. The electric control board 410 is connected to the logic circuit 510, in this embodiment, the electric control board 410 is connected to the voltage input signal processing circuit 121, the first comparator 105 and the second comparator 423 are connected to the gate circuit 570, the gate circuit 570 is connected to the driving circuit 520, the driving circuit 520 is connected to the triple switch and the protection circuit 580, the triple switch includes a triple first switch 511, the triple second switch 512 and the triple third switch 513, the triple first switch 511 is connected with the first electronic switch 521, the triple second switch 512 is connected with the second electronic switch 522, the triple third switch 513 is connected with the third electronic switch 523, the first electronic switch 521 is connected with the driving coil of the first normally closed relay 531, the second electronic switch 522 is connected with the driving coil of the second normally closed relay 532, the third electronic switch 523 is connected with the driving coil of the third normally closed relay 533, and the driving circuit 520 generates a state signal through the protection circuit 580 and feeds the state signal back to the electric control board 410. The car locking switch 120 is connected with a logic circuit 510, and is connected with a control triple switch.

In a first aspect, the electric control board 410 is used for controlling the operation of the automotive electric appliances, and the automotive electric appliances are electrically connected to the electric control board 410, wherein the automotive electric appliances include automotive sensors, and the automotive sensors are also electrically connected to the electric control board 410, the automotive sensors include a voltage sensor, a temperature sensor 420 and a collision sensor, when the automotive sensors detect that the automotive is abnormally high voltage, the automotive is abnormally high temperature or the automotive is collided, the electric control board 410 generates a first switch signal and transmits the first switch signal to the voltage input signal processing circuit 121 of the logic circuit 510, when the automotive is in an unlocked state, that is, when the automotive is unlocked by the automotive key, the automotive locking switch 120 is closed, the automotive locking switch 120 controls the triple switch, so that the triple first switch 511 maintains the open state, the triple second switch 512 and the triple third switch 513 maintains the closed state, and therefore the driving circuit 520 cannot drive the first switch 501, the driving circuit 520 drives the second electronic switch 522 to control the second switch 502 to be switched off and drives the third electronic switch 523 to switch the third switch 503 off according to the first switch signal, at this time, the first storage battery 100 can still provide power for the second vehicle load 400, so that passengers can drive the vehicle to a safe position and open the doors of the vehicle for evacuation, meanwhile, the driving circuit 520 generates a state signal and feeds the state signal back to the electric control board 410 through the protection circuit 580, and the electric control board 410 converts the state signal into visual information to be displayed on the vehicle display screen according to the state signal.

In a second aspect, when the vehicle is in a locked state, that is, the vehicle is not unlocked by the vehicle key, the vehicle locking switch 120 is turned off, and at this time, the vehicle locking switch 120 does not control the triple switch, and in the triple switch, the triple first switch 511 is kept in a normally closed state, the triple second switch 512 and the triple third switch 513 are kept in a normally open state, so that the driving circuit 520 cannot drive the second switch 502 and the third switch 503, the logic circuit 510 amplifies the voltage signal of the temperature sensor 420 through the temperature and voltage signal processing circuit 421 and filters burrs, and then compares the amplified voltage signal with the second reference power 422 in the second comparator 423, specifically, the temperature sensor 420 is disposed in the engine compartment, when the vehicle is in the locked state, the engine is not started, so that the vehicle generator 200 cannot output, and the electronic control panel 410 is also in a sleep state, the voltage value of the reference power source 110 corresponding to 500 degrees centigrade can be set in the logic circuit 510, when the second comparator 423 of the logic circuit 510 judges that the temperature detected by the temperature sensor 420 is higher than 500 degrees centigrade, the second comparator 423 generates a second switch signal to the driving circuit 520, so that the driving circuit 520 generates a disconnection signal, but the second switch 512 and the third switch 513 keep a disconnection state, the disconnection signal generated by the driving circuit 520 can only be transmitted to the first electronic switch 521, the first electronic switch 521 controls the disconnection of the first switch 501, meanwhile, the driving circuit 520 generates and keeps a state signal, after the automobile is unlocked, the driving circuit 520 feeds the state signal back to the electric control board 410 through the protection circuit 580, and the electric control board 410 converts the state signal into visual information to be displayed on the automobile display screen according to the state signal.

When the automobile is in an unlocked state, that is, when the automobile is unlocked by a key, the automobile locking switch 120 is closed, at this time, the automobile locking switch 120 controls the triple switch, so that the triple first switch 511 is kept in an open state, the triple second switch 512 and the triple third switch 513 are kept in a closed state, therefore, the driving circuit 520 cannot drive the first switch 501, the logic circuit 510 amplifies a voltage signal of the temperature sensor 420 through the temperature-voltage signal processing circuit 421, filters out burrs, and then compares the voltage signal with the second reference power supply 422 in the second comparator 423, specifically, the temperature sensor 420 is arranged in an engine compartment, when the automobile is in the unlocked state, if the engine is started, the unlocking reference power supply 110 can be set to a voltage value corresponding to 500 degrees in the logic circuit 510, when the logic circuit 510 judges that the temperature detected by the temperature sensor 420 is higher than 500 degrees celsius, the second comparator 423 generates a second switch signal to the driving circuit 520, but the triple first switch 511 is kept in an off state, at this time, the off signal generated by the driving circuit 520 can only be transmitted to the second electronic switch 522 and the third electronic switch 523, so that the driving circuit 520 controls the second switch 502 to be turned off through the second electronic switch 522, and controls the third switch 503 to be turned off through the third electronic switch 523, meanwhile, the driving circuit 520 generates a state signal and feeds the state signal back to the electronic control board 410 through the protection circuit 580, and the electronic control board 410 converts the state signal into visual information to be displayed on the display screen of the automobile according to the state signal.

Preferably, the electronic switch 530 includes a MOS transistor.

On the other hand, when the automobile is in a locked state, that is, the automobile is not unlocked by the automobile key, the automobile locking switch 120 is turned off, at this time, the automobile locking switch 120 does not control the triple switch, and in the triple switch, the triple first switch 511 is kept in a normally closed state, and the triple second switch 512 and the triple third switch 513 are kept in a normally open state, so that the driving circuit 520 cannot drive the second switch 502 and the third switch 503, the engine is not started, the automobile generator 200 cannot output, and the electronic control board 410 is also in a dormant state, so that an abnormal high voltage does not exist.

When the automobile is in an unlocked state, that is, the automobile is unlocked by an automobile key, the automobile locking switch 120 is closed, at this time, the automobile locking switch 120 controls the triple switch to keep the triple first switch 511 in an open state, the triple second switch 512 and the triple third switch 513 are in a closed state, so that the driving circuit 520 cannot drive the first switch 501, the positive electrode of the first storage battery 100 and the logic circuit 510 are connected, the first storage battery 100 transmits a voltage value signal to the first comparator 105 through the voltage division circuit 101 and the filter circuit 102, the normal voltage value of the first storage battery 100 is 12V, the voltage value of the first reference power supply 104 in the logic circuit 510 can be set to be 18V, when the first comparator 105 judges that the voltage value of the first storage battery 100 is higher than 18V, the first comparator 105 generates a third switch signal to the driving circuit 520, but the triple first switch 511 keeps in an open state, at this time, the off signal generated by the driving circuit 520 can only be transmitted to the second electronic switch 522 and the third electronic switch 523, so that the driving circuit 520 controls the second switch 502 to be turned off through the second electronic switch 522 and controls the third switch 503 to be turned off through the third electronic switch 523, meanwhile, the driving circuit 520 generates a state signal and feeds the state signal back to the electronic control board 410 through the protection circuit 580, and the electronic control board 410 converts the state signal into visual information to be displayed on the display screen of the automobile according to the state signal.

Preferably, the gate circuit 570 is an and circuit 570, wherein the first, second and third switch signals all output a "0" value, and if any one of the switch signals is a "0" value, the and circuit 570 outputs a "0" value, and when the driving circuit 520 receives the "0" value, the electronic switch 530 is driven.

In another alternative embodiment, the driving circuit may also directly drive the first normally closed relay to control the first switch to be opened through the first electronic switch, the second electronic switch drives the second normally closed relay to control the second switch, and the second electronic switch drives the third normally closed relay to control the third switch to be opened, wherein the second electronic switch includes two pairs of contacts to control the second normally closed relay and the third normally closed relay respectively, and only two electronic switches are used, so that the two-way switch control driving circuit is selected to realize the function of the triple switch in the above-mentioned embodiment, the two-way switch includes the first two-way switch and the second two-way switch, the first two-way switch and the first triple switch in the above-mentioned embodiment have the same function and function, and the same implementation mode is adopted, and the second two-way switch and the second triple switch and the third triple switch in the above-mentioned embodiment have the same function and function, and in the same way.

EXAMPLE five

As shown in fig. 5, the fifth embodiment of the present invention is based on the third embodiment of the present invention, and further describes the logic circuit 510.

Specifically, the positive electrode of the first battery 100 is connected to the logic circuit 510, and the voltage dividing circuit 101 and the filter circuit 102 are sequentially connected to one input end of the first comparator 105, inside the logic circuit 510, a node between the first battery 100 and the voltage dividing circuit 101 is connected to one end of the pull-up circuit 103 and one end of the first reference power source 104, the other end of the pull-up circuit 103 is connected to the electronic switch 530 to provide control power to the first electronic switch 521, the second electronic switch 522 and the third electronic switch 523, and the other end of the first reference power source 104 is connected to the other input end of the first comparator 105. The temperature sensor 420 is connected to the logic circuit 510, and is connected to the temperature voltage signal processing circuit 421 to an input terminal of the second comparator 423, a node between the first reference power supply 104 and the positive electrode of the first battery 100 is connected to one end of the second reference power supply 422, and the other end of the second reference power supply 422 is connected to the other input terminal of the second comparator 423. The electric control board 410 is connected with the logic circuit 510 through a local area internet communication terminal 560, and is connected with a local area internet decoding circuit 550, the local area internet decoding circuit 550 is connected with a first comparator 105 and a second comparator 423 together to be connected with a gate circuit 570, the gate circuit 570 is connected with a driving circuit 520, the driving circuit 520 is connected with a triple switch and a protection circuit 580, the triple switch comprises a triple first switch 511, a triple second switch 512 and a triple third switch 513, the triple first switch 511 is connected with a first electronic switch 521, the triple second switch 512 is connected with a second electronic switch 522, the triple third switch 513 is connected with a third electronic switch 523, the first electronic switch 521 is connected with a driving coil of a first normally closed relay 531, the second electronic switch 522 is connected with a driving coil of a second normally closed relay 532, and the third electronic switch 523 is connected with a driving coil of a third normally closed relay 533, the driving circuit 520 generates a status signal and feeds the status signal back to the lan communication terminal 560, and the lan communication terminal 560 feeds the status signal back to the electronic control board 410. The lan decoding circuit 550 is connected to the control triplex switch.

In a first aspect, the electric control board 410 is used for controlling the operation of the automotive electric appliances, the automotive electric appliances are electrically connected to the electric control board 410, wherein the automotive electric appliances include automotive sensors, the automotive sensors are also electrically connected to the electric control board 410, the automotive sensors include a current sensor, a temperature sensor 420 and a collision sensor, when the automotive sensors detect that the automotive is abnormally high voltage, the automotive is abnormally high temperature or the automotive is collided, the electric control board 410 generates a first switch signal and transmits the first switch signal to the local area internet communication terminal 560, the local area internet communication terminal 560 transmits the first switch signal to the local area internet decoding circuit 550 in the logic circuit 510, when the automotive is in an unlocking state, that is, when the automotive is unlocked by the automotive key, the automotive locking switch 120 is closed, the local area internet decoding circuit 550 controls the triple switch, so that the triple first switch 511 is kept in an open, the triple second switch 512 and the triple third switch 513 are kept in a closed state, so the driving circuit 520 cannot drive the first switch 501, the driving circuit 520 drives the second electronic switch 522 to control the second switch 502 to be switched off according to the first switch signal, drives the third electronic switch 523 to be switched off to control the third switch 503, at this time, the first storage battery 100 can still provide power for the second vehicle load 400, so that passengers can continue to drive the automobile to a safe position and open doors for evacuation, meanwhile, the driving circuit 520 generates a state signal through the protection circuit 580 and outputs the state signal to the local area interconnection network communication terminal 560, the local area interconnection network communication terminal 560 feeds the state signal back to the electronic control board 410, and the electronic control board 410 converts the state signal into visual information to be displayed on the automobile display screen.

In a second aspect, when the vehicle is in a locked state, that is, the vehicle is not unlocked by the vehicle key, the lan decoding circuit 550 does not control the triple switch, and in the triple switch, the triple first switch 511 is kept in a normally closed state, the triple second switch 512 and the triple third switch 513 are kept in a normally open state, so that the driving circuit 520 cannot drive the second switch 502 and the third switch 503, the logic circuit 510 amplifies the signal of the temperature sensor 420 by the temperature-voltage signal processing circuit 421 and filters out the glitch, and then compares the amplified signal with the second reference power 422 in the second comparator 423, specifically, the temperature sensor 420 is disposed in the engine compartment, when the vehicle is in the locked state, the engine is not started, so that the vehicle generator 200 cannot output, the electronic control panel 410 is also in a sleep state, the reference power 110 can be set in the logic circuit 510 to a voltage value corresponding to 500 degrees celsius, when the second comparator 423 of the logic circuit 510 determines that the temperature detected by the temperature sensor 420 is higher than 500 ℃, the second comparator 423 generates a second switch signal to the driving circuit 520, so that the driving circuit 520 generates a disconnection signal, but the triple second switch 512 and the triple third switch 513 keep a disconnection state, at this time, the disconnection signal generated by the driving circuit 520 can only be transmitted to the first electronic switch 521, the first electronic switch 521 controls the disconnection of the first switch 501, meanwhile, the driving circuit 520 generates a state signal through the protection circuit 580 and feeds the state signal back to the local area interconnection network communication terminal 560, the local area network communication terminal 560 feeds back to the electronic control board 410, and the electronic control board 410 converts the state signal into visual information to be displayed on the automobile display screen.

When the automobile is in an unlocked state, that is, when the automobile is unlocked by a key, the automobile locking switch 120 is closed, at this time, the local area internet decoding circuit 550 controls the triple switch, so that the triple first switch 511 is kept in an open state, the triple second switch 512 and the triple third switch 513 are kept in a closed state, therefore, the driving circuit 520 cannot drive the first switch 501, the logic circuit 510 amplifies a voltage signal of the temperature sensor 420 through the temperature voltage signal processing circuit 421, filters out burrs, and then compares the voltage signal with the second reference power supply 422 in the second comparator 423, specifically, the temperature sensor 420 is arranged in an engine compartment, when the automobile is in the unlocked state, if the engine is started, the unlocking reference power supply 110 can be set in the logic circuit 510 to a voltage value corresponding to 500 degrees celsius, when the logic circuit 510 judges that the temperature detected by the temperature sensor 420 is higher than 500 degrees celsius, the second comparator 423 generates a second switch signal to the driving circuit 520, but the triple first switch 511 is kept in an off state, at this time, the off signal generated by the driving circuit 520 can only be transmitted to the second electronic switch 522 and the third electronic switch 523, so that the driving circuit 520 controls the second switch 502 to be turned off through the second electronic switch 522, and controls the third switch 503 to be turned off through the third electronic switch 523, meanwhile, the driving circuit 520 generates a state signal through the protection circuit 580 and feeds the state signal back to the local area internet communication terminal 560, the local area internet communication terminal 560 feeds the state signal back to the electronic control board 410, and the electronic control board 410 converts the state signal into visual information to be displayed on the display screen of the vehicle.

Preferably, the electronic switch 530 includes a MOS transistor.

On the other hand, when the automobile is in a locked state, that is, the automobile is not unlocked by the automobile key, at this time, the local area internet decoding circuit 550 does not control the triple switch, and in the triple switch, the triple first switch 511 is kept in a normally closed state, and the triple second switch 512 and the triple third switch 513 are kept in a normally open state, so that the driving circuit 520 cannot drive the second switch 502 and the third switch 503, the engine is not started, the automobile generator 200 cannot output, and the electronic control panel 410 is also in a dormant state, so that an abnormal high voltage does not exist.

When the automobile is in an unlocked state, that is, the automobile is unlocked by a key, the local area internet decoding circuit 550 controls the triple switch, so that the triple first switch 511 is kept in an off state, the triple second switch 512 and the triple third switch 513 are kept in an on state, therefore, the driving circuit 520 cannot drive the first switch 501, the positive electrode of the first storage battery 100 and the logic circuit 510 are switched on, the first storage battery 100 transmits a voltage value signal to the first comparator 105 through the voltage division circuit 101 and the filter circuit 102, the normal voltage value of the first storage battery 100 is 12V, the voltage value of the first reference power source 104 in the logic circuit 510 can be set to be 18V, when the first comparator 105 judges that the voltage value of the first storage battery 100 is higher than 18V, the first comparator 105 generates a third switch signal to the driving circuit 520, but the triple first switch 511 is kept in an off state, at this time, the off signal generated by the driving circuit 520 can only be transmitted to the second electronic switch 522 and the third electronic switch 523, the driving circuit 520 controls the second switch 502 to be switched off through the second electronic switch 522, controls the third switch 503 to be switched off through the third electronic switch 523, meanwhile, the driving circuit 520 generates a state signal through the protection circuit 580 and feeds the state signal back to the local area internet communication terminal 560, the local area internet communication terminal 560 feeds the state signal back to the electric control board 410, and the electric control board 410 converts the state signal into visual information to be displayed on the automobile display screen.

EXAMPLE six

As shown in fig. 6, the sixth embodiment of the present invention is based on the second embodiment of the present invention, and is an alternative embodiment to the fourth embodiment of the present invention to further describe the logic circuit 510.

In this embodiment, the logic circuit 510 includes a microprocessor 590, a first reference power source 104, a first driving circuit 551 and a second driving circuit 552, the anode of the first battery 100, the first reference power source 104, the temperature sensor 420, the electronic control board 410 and the car lock switch 120 are connected to the microprocessor 590, the electronic control board 410 generates a first switching signal and inputs the first switching signal to the microprocessor 590, the microprocessor 590 generates a second switching signal and the first switching signal and inputs the second switching signal to the second driving circuit 552, and the microprocessor 590 drives the first driving circuit 551 and the second driving circuit 552 according to the first switching signal, the second switching signal and the third switching signal.

Specifically, the positive electrode of the first battery 100 is connected to the logic circuit 510, and the voltage dividing circuit 101 and the filter circuit 102 are sequentially connected to the microprocessor 590, in the logic circuit 510, a node between the first battery 100 and the voltage dividing circuit 101 is connected to one end of the pull-up circuit 103 and one end of the first reference power source 104, the other end of the pull-up circuit 103 is connected to the electronic switch 530 to provide control power to the first electronic switch 521, the second electronic switch 522 and the third electronic switch 523, and the other end of the first reference power source 104 is connected to the microprocessor 590. The temperature sensor 420 is connected to the logic circuit 510, and is connected to the temperature voltage signal processing circuit 421 and the first analog-to-digital conversion circuit 424 in turn to the microprocessor 590. The electric control board 410 is connected with the logic circuit 510, the voltage input signal processing circuit 121 and the second analog-to-digital conversion circuit 425 are connected with the microprocessor 590 in sequence, the automobile locking switch 120 is connected with the microprocessor 590, the microprocessor 590 comprises a memory 591, the microprocessor 590 is connected with a first digital-to-analog conversion circuit 541, a second digital-to-analog conversion circuit 542 and a third digital-to-analog conversion circuit 543, the first digital-to-analog conversion circuit 541 is connected with a first driving circuit 551, the first driving circuit 551 is connected with a first electronic switch 521, the first electronic switch 521 is connected with a driving coil of a first normally closed relay 531, the second digital-to-analog conversion circuit 542 is connected with a second driving circuit 552, the second driving circuit 552 is connected with a second electronic switch 522 and a third electronic switch 523, the second electronic switch 522 is connected with a driving coil of a second normally closed relay 532, and the third electronic switch 523 is connected, the third digital-to-analog conversion circuit 543 feeds back and outputs to the electronic control board 410 through the protection circuit 580, and the electronic control board 410 converts the state signal into visual information and displays the visual information on the display screen of the automobile.

In a first aspect, the electric control board 410 is used for controlling the operation of the electric appliances for automobiles, and the electric appliances for automobiles are electrically connected to the electric control board 410, wherein the electric appliances for automobiles include automobile sensors, which are also electrically connected to the electric control board 410, the automobile sensors include a current sensor, a temperature sensor 420 and a collision sensor, when the automobile sensors detect that the automobile is abnormally high voltage, the automobile is abnormally high temperature or the automobile is collided, the electric control board 410 generates a first switching signal and transmits the first switching signal to the voltage input signal processing circuit 121 of the logic circuit 510, the voltage input signal processing circuit 121 transmits the first switching signal to the second analog-to-digital conversion circuit 425, the second analog-to-digital conversion circuit 425 converts the first switching signal into a digital signal and transmits the digital signal to the microprocessor 590, and when the automobile is in an unlocking state, that is, when the automobile is unlocked by the automobile key, the, the microprocessor 590 receives the signal of the car lock switch 120, at this time, the microprocessor 590 does not control the first driving circuit 551 to drive the first switch 501, but may control the second driving circuit 552 to drive the second electronic switch 522 to control the second switch 502 to be turned off according to the first switch signal, and drive the third electronic switch 523 to turn off the third switch 503, at this time, the first battery 100 may still provide power for the second vehicle load 400, so that the occupant can continue to drive the car to a safe position and open the car door for evacuation, at the same time, the microprocessor 590 generates a digital signal, converts the digital signal into a status signal through the third d/a conversion circuit 543, and feeds the status signal back to the electronic control board 410 through the protection circuit 580, and the electronic control board 410 converts the status signal into visual information according to the status signal and displays.

In a second aspect, when the vehicle is in a locked state, that is, the vehicle is not unlocked by the vehicle key, the vehicle locking switch 120 is turned off, the microprocessor 590 receives the signal of the vehicle locking switch 120, at this time, the microprocessor 590 does not control the second driving circuit 552 to drive the second switch 502 and the third switch 503, the logic circuit 510 passes the signal of the temperature sensor 420 through the temperature and voltage signal processing circuit 421, the temperature and voltage signal processing circuit 421 amplifies the signal and filters out the glitch, and then transmits the amplified signal to the first analog-to-digital conversion circuit 424, the first analog-to-digital conversion circuit 424 converts the signal into a digital signal and transmits the digital signal to the microprocessor 590, a temperature digital reference value is prestored in the memory 591 of the microprocessor 590, and the microprocessor 590 may determine and compare the input value of the temperature sensor 420 with the reference value, specifically, the temperature sensor 420 is disposed in the, when the automobile is in a locked state, the engine is not started, so that the automobile generator 200 cannot output, the electric control board 410 is also in a dormant state, a digital reference value for the temperature may be set in the memory 591 as a voltage value corresponding to 500 degrees celsius, when the microprocessor 590 of the logic circuit 510 determines that the temperature detected by the temperature sensor 420 is greater than 500 degrees celsius, the microprocessor 590 generates a second switching signal, converts the second switching signal into an analog signal through the first digital-to-analog converting circuit 541, the analog signal causes the first driving circuit 551 to generate a turn-off signal, and, at the same time, the microprocessor 590 generates and holds a digital signal, after the automobile is unlocked, the microprocessor 590 converts the digital signal into a status signal through the third digital-to-analog conversion circuit 543, and feeds the status signal back to the electronic control board 410 through the protection circuit 580, and the electronic control board 410 converts the status signal into visual information to be displayed on the automobile display screen.

When the automobile is in an unlocked state, that is, the automobile is unlocked by a key, the automobile locking switch 120 is closed, the microprocessor 590 receives a signal of the automobile locking switch 120, at this time, the microprocessor 590 does not control the first driving circuit 551 to drive the first switch 501, but can control the second driving circuit 552 to drive the second electronic switch 522 to control the second switch 502 to be opened according to the first switch signal, drive the third electronic switch 523 to be opened to the third switch 503, the logic circuit 510 passes the signal of the temperature sensor 420 through the temperature and voltage signal processing circuit 421, the temperature and voltage signal processing circuit 421 amplifies the signal and filters burrs, and then transmits the signal to the first analog-to-digital conversion circuit 424, the first analog-to-digital conversion circuit 424 converts the signal into a digital signal and transmits the digital signal to the microprocessor 590, a temperature digital reference value is prestored in the memory 591 of the microprocessor 590, and the microprocessor 590 can judge and compare the input value and the reference value of the temperature, specifically, the temperature sensor 420 is disposed in the engine compartment, and when the vehicle is in the unlocked state, if the engine is started, a digital reference value for the temperature may be set in the memory 591 as a voltage value corresponding to 500 degrees celsius, and at this time, the car lock switch 120 is closed, the microprocessor 590 compares the digital reference value of the temperature in the memory 591 with the input value of the temperature sensor 420, when the logic circuit 510 determines that the temperature detected by the temperature sensor 420 is greater than 500 degrees celsius, the microprocessor 590 generates a second switching signal to the second driving circuit 552, converts the second switching signal into an analog signal through the second d/a converting circuit 542, the analog signal makes the second driving circuit 552 generate a disconnection signal, and at the same time, the microprocessor 590 generates a digital signal, which is converted into a state signal by the third digital-to-analog conversion circuit 543, and fed back to the electric control board 410 through the protection circuit 580, and the electric control board 410 converts the state signal into visual information to be displayed on the display screen of the vehicle.

Preferably, the electronic switch 530 includes a MOS transistor.

On the other hand, when the automobile is in a locked state, that is, the automobile is not unlocked by the automobile key, the automobile lock switch 120 is turned off, the microprocessor 590 receives the signal of the automobile lock switch 120, and at this time, the microprocessor 590 does not control the second driving circuit 552 to drive the second switch 502 and the third switch 503, so that the engine is not started, the automobile generator 200 cannot output, and the electronic control board 410 is also in a dormant state, so that there is no abnormal high voltage.

When the car is in an unlocked state, that is, the car is unlocked by a car key, the car locking switch 120 is closed, the microprocessor 590 receives a signal from the car locking switch 120, at this time, the microprocessor 590 does not control the first driving circuit 551 to drive the first switch 501, but may control the second driving circuit 552 to drive the second electronic switch 522 to control the second switch 502 to be turned off according to the first switch signal, drive the third electronic switch 523 to be turned off the third switch 503, the positive electrode of the first storage battery 100 and the logic circuit 510 are turned on, the first storage battery 100 transmits its voltage value signal to the microprocessor 590 through the voltage dividing circuit 101 and the filter circuit 102, the normal voltage value of the first storage battery 100 is 12V, the voltage value of the first reference power source 104 may be set to 18V in the logic circuit 510, when the microprocessor 590 judges that the voltage value of the first storage battery 100 is higher than 18V, the microprocessor 590 generates a third switch signal to the second digital-to-analog conversion circuit 542, the second digital-to-analog conversion circuit 542 sends an analog signal to the second driving circuit 552, so that the second driving circuit 552 controls the second switch 502 to be turned off through the second electronic switch 522 and controls the third switch 503 to be turned off through the third electronic switch 523, meanwhile, the microprocessor 590 generates a digital signal and converts the digital signal into a state signal through the third digital-to-analog conversion circuit 543, and the state signal is fed back to the electronic control board 410 through the protection circuit 580, and the electronic control board 410 converts the state signal into visual information and displays the visual information on the display screen of the automobile.

Preferably, the controller 500 further includes normally closed relays including a first normally closed relay 531 controlling the first switch 501, a second normally closed relay 532 controlling the second switch 502, and a third normally closed relay 533 controlling the third switch 503.

EXAMPLE seven

As shown in fig. 7, the seventh embodiment of the present invention is based on the third embodiment of the present invention, and further describes the logic circuit 510, and the seventh embodiment of the present invention is also an alternative embodiment of the fifth embodiment of the present invention.

In this embodiment, the logic circuit 510 includes a microprocessor 590, a first reference power source 104, a first driving circuit 551 and a second driving circuit 552, the anode of the first battery 100, the first reference power source 104110, the temperature sensor 420, the electronic control board 410 and the car lock switch 120 are connected to the microprocessor 590, the electronic control board 410 generates a first switching signal and inputs the first switching signal to the microprocessor 590, the microprocessor 590 generates a second switching signal and a third switching signal and inputs the second switching signal and the third switching signal to the second driving circuit 552, and the microprocessor 590 drives the first driving circuit 551 and the second driving circuit 552 according to the first switching signal, the second switching signal and the third switching signal.

Specifically, the positive electrode of the first battery 100 is connected to the logic circuit 510, and the voltage dividing circuit 101 and the filter circuit 102 are sequentially connected to the microprocessor 590, in the logic circuit 510, a node between the first battery 100 and the voltage dividing circuit 101 is connected to one end of the pull-up circuit 103 and one end of the first reference power source 104, the other end of the pull-up circuit 103 is connected to the electronic switch 530 to provide control power to the first electronic switch 521, the second electronic switch 522 and the third electronic switch 523, and the other end of the first reference power source 104 is connected to the microprocessor 590. The temperature sensor 420 is connected to the logic circuit 510, and is connected to the temperature voltage signal processing circuit 421 and the first analog-to-digital conversion circuit 424 in turn to the microprocessor 590. The electric control board 410 is connected with the logic circuit 510, the local area internet communication terminal 560 and the local area internet decoding circuit 550 are connected with the microprocessor 590 in sequence, the microprocessor 590 comprises a memory 591, the microprocessor 590 is connected with a first digital-to-analog conversion circuit 541 and a second digital-to-analog conversion circuit 542, the first digital-to-analog conversion circuit 541 is connected with a first driving circuit 551, the first driving circuit 551 is connected with a first electronic switch 521, the first electronic switch 521 is connected with a driving coil of a first normally closed relay 531, the second digital-to-analog conversion circuit 542 is connected with a second driving circuit 552, the second driving circuit 552 is connected with a second electronic switch 522 and a third electronic switch 523, the second electronic switch 522 is connected with a driving coil 532 of a second normally closed relay, the third electronic switch 523 is connected with a driving coil of a third normally closed relay 533, and the microprocessor 590 is fed back and output to the electric control board 410 through the local area internet decoding circuit 550 and the, the electronic control board 410 converts the status signal into visual information to be displayed on the display screen of the automobile.

In a first aspect, the electric control board 410 is used for controlling the operation of the automotive electric appliance, and the automotive electric appliance is electrically connected to the electric control board 410, wherein the automotive electric appliance includes automotive sensors, and the automotive sensors are also electrically connected to the electric control board 410, and the automotive sensors include a current sensor, a temperature sensor 420 and a collision sensor, when the automotive sensors detect that the automotive is abnormally high voltage, the automotive is abnormally high temperature or the automotive is collided, the electric control board 410 generates a first switching signal and transmits the first switching signal to the local area interconnection network communication terminal 560, the local area interconnection network communication terminal 560 transmits the first switching signal to the local area interconnection network decoding circuit 550 in the logic circuit 510, and the local area interconnection network decoding circuit 550 processes the first switching signal and transmits the first switching signal to the microprocessor. At this time, the car is in an unlocked state, that is, the car is unlocked by the car key, the car locking switch 120 is turned on, the microprocessor 590 receives the signal of the car locking switch 120 through the local area internet decoding circuit 550, at this time, the microprocessor 590 does not control the first driving circuit 551 to drive the first switch 501, but the second driving circuit 552 can be controlled to drive the second electronic switch 522 to control the second switch 502 to be turned off and drive the third electronic switch 523 to be turned off to control the third switch 503 according to the first switching signal, at which time the first storage battery 100 can still supply power to the second vehicle load 400, so that the passenger can continue to drive the vehicle to a safe position and open the doors to evacuate, meanwhile, the microprocessor 590 generates a status signal and feeds the status signal back to the lan communication terminal 560, the lan communication terminal 560 feeds the status signal back to the electronic control board 410, and the electronic control board 410 converts the status signal into visual information to be displayed on the display screen of the vehicle.

In a second aspect, when the vehicle is in a locked state, that is, the vehicle is not unlocked by the vehicle key, the microprocessor 590 receives the signal of the vehicle locking switch 120 through the lan decoding circuit 550, at this time, the microprocessor 590 does not control the second driving circuit 552 to drive the second switch 502 and the third switch 503, the logic circuit 510 passes the signal of the temperature sensor 420 through the temperature-voltage signal processing circuit 421, the temperature-voltage signal processing circuit 421 amplifies the signal and filters out the glitch, and then transmits the amplified signal to the first analog-to-digital conversion circuit 424, the first analog-to-digital conversion circuit 424 converts the signal into a digital signal and transmits the digital signal to the microprocessor 590, a temperature digital reference value is prestored in the memory 591 of the microprocessor 590, and the microprocessor 590 may determine and compare the input value of the temperature sensor 420 with the reference value, specifically, the temperature sensor 420 is disposed in the engine compartment, when the automobile is in a locked state, the engine is not started, so that the automobile generator 200 cannot output, the electric control board 410 is also in a dormant state, a digital reference value for the temperature may be set in the memory 591 as a voltage value corresponding to 500 degrees celsius, when the microprocessor 590 of the logic circuit 510 determines that the temperature detected by the temperature sensor 420 is greater than 500 degrees celsius, the microprocessor 590 generates a second switching signal, converts the second switching signal into an analog signal through the first digital-to-analog converting circuit 541, the analog signal causes the first driving circuit 551 to generate a turn-off signal, and, at the same time, the microprocessor 590 generates and holds a state signal, after the automobile is unlocked, the microprocessor 590 feeds back and outputs the state signal to the local area internet communication terminal 560, the local area internet communication terminal 560 feeds back to the electronic control board 410, and the electronic control board 410 converts the state signal into visual information to be displayed on the automobile display screen.

When the automobile is in an unlocked state, that is, the automobile is unlocked by the automobile key, the automobile locking switch 120 is closed, the microprocessor 590 receives the signal of the automobile locking switch 120 through the local area internet decoding circuit 550, at this time, the microprocessor 590 does not control the first driving circuit 551 to drive the first switch 501, but can control the second driving circuit 552 to drive the second electronic switch 522 to open the second switch 502 according to the first switch signal, drive the third electronic switch 523 to open the third switch 503, the logic circuit 510 passes the signal of the temperature sensor 420 through the temperature and voltage signal processing circuit 421, the temperature and voltage signal processing circuit 421 amplifies the signal and filters burrs, and then transmits the signal to the first analog-to-digital conversion circuit 424, the first analog-to-digital conversion circuit 424 converts the signal into a digital signal and transmits the digital signal to the microprocessor 590, a temperature digital reference value is stored in the memory 591 of the microprocessor 590, the microprocessor 590 may determine to compare the input value of the temperature sensor 420 with a reference value, specifically, the temperature sensor 420 is disposed in the engine compartment, when the vehicle is in an unlocked state, if the engine is started, the memory 591 may be configured with a voltage value corresponding to a temperature digital reference value of 500 degrees celsius, and at this time, the vehicle locking switch 120 is closed, the microprocessor 590 compares the temperature digital reference value in the memory 591 with the input value of the temperature sensor 420, when the logic circuit 510 determines that the temperature detected by the temperature sensor 420 is higher than 500 degrees celsius, the microprocessor 590 generates a second switching signal to the second driving circuit 552, the second switching signal is converted into an analog signal by the second digital-to-analog conversion circuit 542, the analog signal causes the second driving circuit 552 to generate an open signal, and simultaneously, the microprocessor 590 generates a state signal and feeds back the state signal to the local area interconnection network communication terminal 560, the lan communication terminal 560 feeds back to the electronic control board 410, and the electronic control board 410 converts the status signal into visual information to be displayed on the display screen of the vehicle.

Preferably, the electronic switch 530 includes a MOS transistor.

On the other hand, when the vehicle is in a locked state, that is, the vehicle is not unlocked by the vehicle key, the microprocessor 590 receives the signal of the vehicle locking switch 120 through the local area internet decoding circuit 550, at this time, the microprocessor 590 does not control the second driving circuit 552 to drive the second switch 502 and the third switch 503, the engine is not started, the vehicle generator 200 cannot output, and the electronic control board 410 is also in a sleep state, so that there is no abnormal high voltage.

When the car is in an unlocked state, that is, the car is unlocked by a car key, the microprocessor 590 receives a signal of the car locking switch 120 through the local area internet decoding circuit 550, at this time, the microprocessor 590 does not control the first driving circuit 551 to drive the first switch 501, but can control the second driving circuit 552 to drive the second electronic switch 522 to control the second switch 502 to be turned off according to the first switch signal, drive the third electronic switch 523 to be turned off the third switch 503, the first storage battery 100 transmits a voltage value signal thereof to the microprocessor 590 through the voltage dividing circuit 101 and the filter circuit 102, the normal voltage value of the first storage battery 100 is 12V, the voltage value of the first reference power supply 104 can be set to be 18V in the logic circuit 510, and when the microprocessor 590 judges that the voltage value of the first storage battery 100 is higher than 18V, the microprocessor 590 generates a third switch signal to the second digital-to-analog conversion circuit 542, the second digital-to-analog conversion circuit 542 sends an analog signal to the second driving circuit 552, so that the second driving circuit 552 controls the second switch 502 to be turned off through the second electronic switch 522, controls the third switch 503 to be turned off through the third electronic switch 523, and simultaneously, the microprocessor 590 generates a state signal to be fed back and output to the local area internet communication terminal 560, the local area internet communication terminal 560 is fed back to the electronic control board 410, and the electronic control board 410 converts the state signal into visual information to be displayed on the display screen of the automobile.

Specifically, the driving circuit 520 drives the first normally closed relay 531 through the first electronic switch 521 to control the first switch 501 to open, drives the second normally closed relay 532 through the second electronic switch 522 to control the second switch 502 to open, and drives the third normally closed relay 533 through the third electronic switch 523 to control the third switch 503 to open, wherein the first normally closed relay 531 is integrated in the first switch 501, the second normally closed relay 532 is integrated in the second switch 502, and the third normally closed relay 533 is integrated in the third switch 503. The terminal voltage drop of the electronic switch 530 is about 0.1V-1V, the contact voltage drop of the normally closed relay is about 0.01V or less, and the terminal voltage drop of the electronic switch 530 is much higher than the contact voltage drop of the normally closed relay, so that the normally closed relay can reduce the voltage drop and the line loss in the circuit, and when the current in the circuit is 100A, the normally closed relay can reduce the electric power loss by more than 10W.

Example eight

As shown in fig. 8, the eighth embodiment of the present invention is to further optimize the automobile control circuit provided by the seventh embodiment of the present invention. The difference is only that:

logic circuit 510 further includes a third comparator 545 and a reference signal circuit 544, the reference signal circuit 544 is coupled to microprocessor 590 and third comparator 545, the third comparator 545 is coupled to first driver circuit 551 and second driver circuit 552, and the third comparator 545 is configured to compare the feedback signal from temperature sensor 420 with the first reference signal provided by reference signal circuit 544 to generate a second switching signal to drive first driver circuit 551. Specifically, the third comparator 545 is also connected to the first analog-to-digital conversion circuit 424.

When the vehicle is in a locked state, i.e. the vehicle is not unlocked by the vehicle key, the lan decoding circuit 550 will not send a signal to the microprocessor 590, and the microprocessor 590 stops operating, so as to reduce the consumption of the first battery 100. At this time, the logic circuit 510 passes the signal of the temperature sensor 420 through the temperature voltage signal processing circuit 421, the temperature voltage signal processing circuit 421 amplifies the signal and filters the glitch, and then to the first analog-to-digital conversion circuit 424, the first analog-to-digital conversion circuit 424 converts the signal into a digital signal, and transmitted to a third comparator 545, which compares the digital signal with a first reference signal pre-stored in a reference signal circuit 544, when the temperature detected by the temperature sensor 420 is higher than the temperature indicated by the first reference signal, the third comparator 545 generates a second switching signal, causes the first driving circuit 551 to generate a turn-off signal, after the automobile is unlocked, the microprocessor 590 generates a status signal and feeds the status signal back to the lan communication terminal 560, the lan communication terminal 560 feeds the status signal back to the electronic control board 410, and the electronic control board 410 converts the status signal into visual information to be displayed on the automobile display screen.

When the automobile is in an unlocked state, that is, the automobile is unlocked by the automobile key, because the temperature value when the automobile runs is higher than the value when the automobile does not run, in order to find out the potential safety hazard brought to the automobile by the overhigh temperature in time, at this time, the electronic control board 410 sends the second fine adjustment quantity of the generated temperature to the microprocessor 590, specifically, the electronic control board 410 obtains the second fine adjustment quantity according to the temperature of the engine heat dissipation water tank, and inputs the second fine adjustment quantity to the microprocessor 590 through the local area internet communication terminal 560 and the local area internet decoding circuit 550, the microprocessor 590 updates the first reference signal preset in the reference signal circuit 544 according to the value of the second fine adjustment quantity to obtain a third reference signal, wherein the temperature value corresponding to the third reference signal is higher than the temperature value corresponding to the first reference signal. The third comparator 545 generates a third switching signal to the second driving circuit 552 according to the third reference signal, so that the second driving circuit 552 generates a disconnection signal, the microprocessor 590 generates a status signal and feeds the status signal back to the local area internet communication terminal 560, the local area internet communication terminal 560 feeds the status signal back to the electronic control board 410, and the electronic control board 410 converts the status signal into visual information to be displayed on the display screen of the vehicle. When the car is locked by the key when the car is not needed, the microprocessor 590 will update the third reference signal in the reference signal circuit 544 to the first reference signal again.

In addition, when the vehicle electrical equipment is continuously operated, for example, when the vehicle air conditioner needs to be continuously turned on, the voltage value of the vehicle is lower than the normal voltage value. In order to find out potential safety hazards brought to an automobile by overhigh voltage in time, after the electric control board 410 judges that the electric appliance for the automobile continuously works, the electric control board 410 sends a first fine adjustment amount of generated voltage to the microprocessor 590, specifically, the electric control board 410 obtains the first fine adjustment amount according to an average value of output voltage of the automobile generator 200, and inputs the first fine adjustment amount to the microprocessor 590 through the local area internet communication terminal 560 and the local area internet decoding circuit 550, the microprocessor 590 updates a preset reference value in the memory 591 of the microprocessor according to the value of the first fine adjustment amount to obtain a second reference signal, wherein a voltage value corresponding to the second reference signal is lower than a voltage value corresponding to the preset reference value. At this time, the microprocessor 590 does not generate a second switching signal according to the first reference power source 104, but generates a second switching signal according to a second reference signal, the microprocessor 590 generates the second switching signal to the second driving circuit 552, the second switching signal is converted into an analog signal by the second digital-to-analog conversion circuit 542, the analog signal enables the second driving circuit 552 to generate a disconnection signal, the microprocessor 590 generates a status signal and feeds the status signal back to the lan communication terminal 560, the lan communication terminal 560 feeds back to the electronic control board 410, the electronic control board 410 converts the status signal into a visual information to be displayed on the display screen of the vehicle, and when the electronic control board 410 determines that the vehicle electrical apparatus does not continuously operate, the microprocessor 590 renews the second reference signal in the memory 591 of the second reference signal to a preset reference value.

Example nine

As shown in fig. 9, the ninth embodiment of the present invention is to further optimize the automobile control circuit in any embodiment of the present invention.

In this embodiment, when the vehicle is a hybrid vehicle, the vehicle control circuit further includes a second battery 800, a dc transformer 600, a third vehicle load 700, and a fourth vehicle load 900, wherein the second battery 800 is connected in series with a sixth switch 506 and a second switch 502 in sequence to connect to the vehicle generator 200; the direct current transformer 600 is connected with the first battery 100 through the fifth switch 505 and the first switch 501 in series, the automobile generator 200 is connected with the second switch 502 in series and is connected with the direct current transformer 600, and the direct current transformer 600 is used for converting the voltage of the second battery 800 into the voltage of the first battery 100 or converting the voltage of the first battery 100 into the voltage of the second battery 800; the third vehicle load 700 is connected in series with the fourth switch 504 to the dc transformer 600; the fourth vehicle load 900 is connected in series to the dc transformer 600.

Specifically, the eighth embodiment of the present invention is different from the previous embodiments only in that when the controller 500 controls to turn off the first switch 501, the sixth switch 506 is simultaneously controlled to be turned off, when the controller 500 controls to turn off the third switch 503, the fourth switch 504 is simultaneously controlled to be turned off, and furthermore, when the automobile is in an unlocked state, that is, when the automobile is unlocked by a key, the fourth switch 504 and the fifth switch 505 are also turned off when the controller 500 judges that the voltage value of the first storage battery 100 is too high, in this embodiment, the first storage battery 100 may be a lead-acid battery, the second storage battery 800 may be a lithium-ion battery, the first storage battery 100 uses a voltage of 12V, the second storage battery 800 and the automobile generator 200 use a voltage of 48V, the third vehicular load 700 is an unnecessary vehicular load like the first vehicular load 300, for example, the third vehicular load 700 uses a voltage of 48V, the fourth vehicle load 900 is a necessary vehicle load for normal running of the vehicle, for example, a control motor load, like the second vehicle load 400, and the fourth vehicle load 400 uses a voltage of 48V.

Preferably, the controller 500 adopts the structure and the control method of any of the above embodiments.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An automotive control circuit, comprising:

a first battery for providing a supply voltage;

the automobile generator is sequentially connected with the second switch and the first switch in series and is connected to the first storage battery;

the first vehicle load is connected with the first storage battery in series through a third switch and a first switch in sequence;

the second vehicle load is connected with the first storage battery in series through the first switch and comprises an electric control board connected with a vehicle sensor, and when the vehicle sensor detects that the vehicle is abnormally high in voltage and high in temperature or the vehicle is collided, the electric control board generates a first switch signal;

and the controller is connected to the control ends of the first switch, the second switch and the third switch and the electric control board, and controls the second switch and the third switch to be switched off according to the first switch signal.

2. The vehicle control circuit of claim 1, wherein the controller comprises a logic circuit, the logic circuit comprises a driving circuit and an electronic switch, the electronic switch comprises a first electronic switch, a second electronic switch and a third electronic switch, the logic circuit generates an output signal to the driving circuit according to a first switch signal, the driving circuit controls the first switch through the first electronic switch, controls the second switch through the second electronic switch, and controls the third switch through the third electronic switch.

3. A vehicle control circuit according to claim 2, wherein the vehicle sensor comprises a temperature sensor connected to the controller, the logic circuit generates a second switch signal when the temperature of the detection position is too high, the logic circuit controls the first switch to be turned off according to the second switch signal when the vehicle is locked, and the logic circuit controls the second switch and the third switch to be turned off according to the second switch signal when the vehicle is unlocked.

4. The vehicle control circuit of claim 3, wherein the first battery is connected to the controller, and the logic circuit generates a third switch signal when the voltage of the first battery is too high in the unlocked state of the vehicle, and controls the second switch and the third switch to be turned off according to the third switch signal.

5. The vehicle control circuit of claim 2, further comprising a vehicle lock switch, wherein the vehicle lock switch is open when the vehicle is locked, the drive circuit is unable to drive the second switch and the third switch, and wherein the vehicle lock switch is closed when the vehicle is unlocked, the drive circuit is unable to drive the first switch.

6. The vehicle control circuit of claim 2, wherein the controller further comprises a local area internet decoding circuit connected to a local area internet communication terminal, and the electronic control board and the first battery are communicatively connected to the logic circuit through the local area internet communication terminal.

7. The vehicle control circuit of claim 2, wherein the controller further comprises a normally closed relay, the normally closed relay comprising a first normally closed relay controlling the first switch, a second normally closed relay controlling the second switch, and a third normally closed relay controlling the third switch.

8. The automobile control circuit as claimed in claim 4, wherein the logic circuit comprises a first comparator, a first reference power supply, a second reference power supply, a gate circuit and a driving circuit, the positive pole of the first storage battery and the first reference power supply are connected to the first comparator, the first comparator generates a third switching signal and inputs the third switching signal to the gate circuit, the temperature sensor and the second reference power supply are connected to the second comparator, the second comparator generates a second switching signal and inputs the second switching signal to the gate circuit, the electric control board generates a first switching signal and inputs the first switching signal to the gate circuit, and the gate circuit drives the driving circuit according to the first switching signal, the second switching signal and the third switching signal.

9. The automobile control circuit according to claim 4, wherein the logic circuit comprises a microprocessor, a first reference power supply, a first driving circuit and a second driving circuit, the anode of the first storage battery, the first reference power supply, the temperature sensor, an electronic control board and an automobile locking switch are connected to the microprocessor, the electronic control board generates a first switching signal and inputs the first switching signal to the microprocessor, the microprocessor generates a second switching signal and a third switching signal and inputs the second switching signal to the second driving circuit, and the microprocessor drives the first driving circuit and the second driving circuit according to the first switching signal, the second switching signal and the third switching signal.

10. The vehicle control circuit of claim 9, wherein the logic circuit further comprises a third comparator and a reference signal circuit, the reference signal circuit is connected to the microprocessor and the third comparator, the third comparator is connected to the first driving circuit and the second driving circuit, and the third comparator is configured to compare the feedback signal of the temperature sensor with the first reference signal provided by the reference signal circuit to generate a second switching signal to drive the first driving circuit.

11. The vehicle control circuit according to any one of claims 1 to 10, further comprising:

the second storage battery is sequentially connected with the sixth switch and the second switch in series and is connected to the automobile generator;

the direct-current transformer is sequentially connected with a fifth switch and the first switch in series and connected to the first storage battery, the automobile generator is connected with the second switch in series and connected to the direct-current transformer, and the direct-current transformer is used for converting the voltage of the second storage battery into the voltage of the first storage battery or converting the voltage of the first storage battery into the voltage of the second storage battery;

a third vehicle load connected in series with a fourth switch to the DC transformer;

and the fourth vehicle load is connected in series to the direct current transformer.