CN117698564A - Vehicle lamp driving circuit and vehicle - Google Patents
Vehicle lamp driving circuit and vehicle Download PDFInfo
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- CN117698564A CN117698564A CN202211105950.1A CN202211105950A CN117698564A CN 117698564 A CN117698564 A CN 117698564A CN 202211105950 A CN202211105950 A CN 202211105950A CN 117698564 A CN117698564 A CN 117698564A
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- power supply
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- brake lamp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
本发明公开一种车辆灯具驱动电路及车辆，车辆灯具驱动电路包括：供电电源、第一供电线路、第二供电线路、低位制动灯驱动电路、高位制动灯驱动电路、低位制动灯以及高位制动灯，供电电源分别与第一供电线路的输入端以及第二供电线路的输入端电连接，第一供电线路的输出端与低位制动灯驱动电路的电源端电连接，低位制动灯驱动电路的输出端与低位制动灯电连接后接地，第二供电线路的输出端与高位制动灯驱动电路的输入端电连接，高位制动灯驱动电路的输出端与高位制动灯电连接后接地。本发明只有两路供电线路均失效时，才会导致制动灯功能整体失效，从而有效降低制动灯功能整体失效的概率。
The invention discloses a vehicle lamp driving circuit and a vehicle. The vehicle lamp driving circuit includes: a power supply, a first power supply line, a second power supply line, a low brake light driving circuit, a high brake light driving circuit, a low brake light and The power supply of the high-position brake light is electrically connected to the input end of the first power supply line and the input end of the second power supply line respectively. The output end of the first power supply line is electrically connected to the power end of the low-position brake light driving circuit. The low-position brake light The output end of the light driving circuit is electrically connected to the low brake light and then grounded, the output end of the second power supply line is electrically connected to the input end of the high brake light driving circuit, and the output end of the high brake light driving circuit is connected to the high brake light After the electrical connection is made, it is grounded. In the present invention, only when both power supply lines fail, the brake light function will fail as a whole, thereby effectively reducing the probability of the brake light function failing as a whole.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle lamp driving circuit and a vehicle.
Background
The tail of the vehicle is provided with a low-position brake lamp and a high-position brake lamp. The high-position brake lamp is higher than the low-position brake lamp, so that a vehicle running at the back is easy to find the front vehicle brake, and the aim of preventing rear-end collision accidents is fulfilled.
When the driver steps on the brake pedal, the low-position brake lamp and the high-position brake lamp are simultaneously turned on to remind the rear driver of paying attention.
Because the low-order brake lamp and the high-order brake lamp are simultaneously lighted, the existing low-order brake lamp driving circuit and the high-order brake lamp driving circuit are powered by the same power supply circuit.
A conventional low-level stop lamp driving circuit and high-level stop lamp driving circuit are shown in fig. 1. One pin of the storage battery 1' is connected with a power supply main circuit 2', and the power supply main circuit 2' is respectively and electrically connected with a low-order brake lamp driving circuit 3' and a high-order brake lamp driving circuit 4' to supply power for the low-order brake lamp driving circuit 3' and the high-order brake lamp driving circuit 4 '. The low-level brake lamp driving circuit 3 'is electrically connected with the low-level brake lamp 5' and then grounded, and the high-level brake lamp driving circuit 4 'is electrically connected with the high-level brake lamp 6' and then grounded. Therefore, since there is only one power supply main line 2' between the battery 1' and the low-level brake lamp driving circuit 3' and the high-level brake lamp driving circuit 4', when the power supply main line 2' fails, the low-level brake lamp 5' and the high-level brake lamp 6' cannot be turned on, and the low-level brake lamp functions are totally disabled.
Disclosure of Invention
Based on the above, it is necessary to provide a vehicle lamp driving circuit and a vehicle, which are required to solve the technical problems that in the prior art, only one power supply main circuit is adopted between a power supply source and a low-position brake lamp driving circuit and the high-position brake lamp driving circuit, and the low-position brake lamp and the high-position brake lamp cannot be lightened easily because the power supply main circuit fails, and the functions of the low-position brake lamp are totally failed.
The invention provides a vehicle lamp driving circuit, comprising: the low-level brake lamp driving circuit comprises a power supply, a first power supply circuit, a second power supply circuit, a low-level brake lamp driving circuit, a high-level brake lamp driving circuit, a low-level brake lamp and a high-level brake lamp, wherein the power supply is respectively and electrically connected with the input end of the first power supply circuit and the input end of the second power supply circuit, the output end of the first power supply circuit is electrically connected with the power end of the low-level brake lamp driving circuit, the output end of the low-level brake lamp driving circuit is electrically connected with the low-level brake lamp and then grounded, the output end of the second power supply circuit is electrically connected with the input end of the high-level brake lamp driving circuit, and the output end of the high-level brake lamp driving circuit is electrically connected with the high-level brake lamp and then grounded.
Further, still include the circuit board, first power supply line the second power supply line low-order stop lamp drive circuit reaches high-order stop lamp drive circuit is fixed on the circuit board, still be equipped with first power source interface and second power source interface on the circuit board, power supply passes through first power source interface with the input electricity of first power supply line is connected, power supply passes through second power source interface with the input electricity of second power supply line is connected.
Still further, the power supply includes a first power supply, and the first power supply is electrically connected to the first power interface and the second power interface, respectively.
Still further, the first power supply is a battery of the vehicle.
Still further, the power supply includes a first power supply and a second power supply, the first power supply is electrically connected with the first power interface, and the second power supply is electrically connected with the second power interface.
Still further, the first power supply is a storage battery of the vehicle, and the second power supply is a direct current-direct current converter electrically connected with a power battery of the vehicle; or alternatively
The second power supply is a storage battery of the vehicle, and the first power supply is a direct current-direct current converter electrically connected with a power battery of the vehicle.
Still further, the circuit board comprises a power management chip and a micro control unit which are fixed on the circuit board, wherein the output end of the power management chip is electrically connected with the power end of the micro control unit, and the output end of the micro control unit is respectively in communication connection with the control end of the low-order brake lamp driving circuit and the control end of the high-order brake lamp driving circuit;
the first power interface is electrically connected with the input end of the power management chip, or the second power interface is electrically connected with the input end of the power management chip.
Still further still, still include the low-order stop lamp inspection circuit and the high-order stop lamp inspection circuit of fixing on the circuit board, low-order stop lamp inspection circuit's input with low-order stop lamp electricity is connected, low-order stop lamp inspection circuit's output with little control unit's input communication connection, high-order stop lamp inspection circuit's input with high-order stop lamp electricity is connected, high-order stop lamp inspection circuit's output with little control unit's input communication connection.
The invention provides a vehicle, which comprises the vehicle lamp driving circuit, wherein the low-position brake lamp and the high-position brake lamp are fixedly connected with a vehicle body of the vehicle.
Further, the vehicle light driving circuit is arranged in a vehicle body control module of the vehicle.
According to the invention, the first power supply circuit and the second power supply circuit are arranged to supply power to the low-position brake lamp driving circuit and the high-position brake lamp driving circuit respectively, so that the whole failure of the brake lamp function can be caused only when the two power supply circuits fail, and the probability of the whole failure of the brake lamp function is effectively reduced.
Drawings
FIG. 1 is a schematic diagram of a conventional low-level brake light driving circuit and high-level brake light driving circuit;
FIG. 2 is a schematic diagram of a driving circuit of a vehicle lamp according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a driving circuit of a vehicle lamp according to another embodiment of the invention;
fig. 4 is a schematic diagram of a driving circuit of a vehicle lamp according to still another embodiment of the invention.
Description of the marking
1' -accumulator; 2' -power supply main line; a 3' -low-order brake lamp driving circuit; 4' -high-order brake lamp driving circuit; 5' -low-position brake lamp; 6' -high-order brake lamp; 7' -car body control module circuit board; 71' -power interface; 1-a first power supply line; 2-a second power supply line; 3-low-order brake lamp driving circuit; 4-high-order brake lamp driving circuit; 5-low brake lights; 6-high-position brake lamp; 7-a power supply; 71-a first power supply; 72-a second power supply; 8-a circuit board; 81-a first power interface; 82-a second power interface; 9-a power management chip; 10-a micro control unit; 11-a low-level stop lamp inspection circuit; 12-high-order stop lamp inspection circuit.
Detailed Description
Specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
A conventional low-level stop lamp driving circuit and high-level stop lamp driving circuit are shown in fig. 1. One pin of the storage battery 1' is connected with a power supply main circuit 2', and the power supply main circuit 2' is respectively and electrically connected with a low-order brake lamp driving circuit 3' and a high-order brake lamp driving circuit 4' to supply power for the low-order brake lamp driving circuit 3' and the high-order brake lamp driving circuit 4 '. The low-level brake lamp driving circuit 3 'is electrically connected with the low-level brake lamp 5' and then grounded, and the high-level brake lamp driving circuit 4 'is electrically connected with the high-level brake lamp 6' and then grounded. The power supply main line 2', the low-level brake lamp driving circuit 3', and the high-level brake lamp driving circuit 4 'are placed on the circuit board 7' of the vehicle body control module (Body Control Module). Other electrical components are also provided on the micro-control unit circuit board 7'.
As can be seen from fig. 1, since there is only one power supply main line 2' between the storage battery 1' and the low-level brake lamp driving circuit 3' and the high-level brake lamp driving circuit 4', when the power supply main line 2' fails, the low-level brake lamp 5' and the high-level brake lamp 6' cannot be lighted, and the functions of the low-level brake lamp are totally disabled.
Fig. 2 shows a driving circuit of a vehicle lamp according to an embodiment of the invention, including: the low-level brake lamp driving circuit comprises a power supply 7, a first power supply circuit 1, a second power supply circuit 2, a low-level brake lamp driving circuit 3, a high-level brake lamp driving circuit 4, a low-level brake lamp 5 and a high-level brake lamp 6, wherein the power supply 7 is respectively electrically connected with the input end of the first power supply circuit 1 and the input end of the second power supply circuit 2, the output end of the first power supply circuit 1 is electrically connected with the power end of the low-level brake lamp driving circuit 3, the output end of the low-level brake lamp driving circuit 3 is electrically connected with the low-level brake lamp 5 and then grounded, the output end of the second power supply circuit 2 is electrically connected with the input end of the high-level brake lamp driving circuit 4, and the output end of the high-level brake lamp driving circuit 4 is electrically connected with the high-level brake lamp 6 and then grounded.
Specifically, the power supply 7 may be one or more, and the power supply 7 is electrically connected to the first power supply line 1 and the second power supply line 2, and supplies power to the low-order brake lamp driving circuit 3 and the high-order brake lamp driving circuit 4 through the first power supply line 1 and the second power supply line 2, respectively. The output end of the low-level brake lamp driving circuit 3 is electrically connected with the low-level brake lamp 5 and then grounded GND. The output end of the high-order brake lamp driving circuit 4 is electrically connected with the high-order brake lamp 6 and then grounded GND. So that the low brake lamp driving circuit 3 and the high brake lamp driving circuit 4 can drive the low brake lamp 5 and the high brake lamp 6, respectively.
Preferably, the low brake lamp 5 and the high brake lamp 6 are fixed to the tail of the vehicle, and the high brake lamp 6 is installed at a position higher than the low brake lamp 5.
The control of the low brake light 5 and the high brake light 6 can be realized by adopting the existing brake light control method. The low brake light 5 and the high brake light 6 are activated and controlled by the microcontroller of the body control module (Body Control Module, BCM) in response to a pedal-down event of the brake pedal.
By referring to a plurality of power supply lines, the low-level brake lamp driving circuit 3 and the high-level brake lamp driving circuit 4 are independently powered, and when only one power supply line fails and one brake lamp cannot be lightened, the other brake lamp can still provide a brake lamp function so as to remind a rear driver of paying attention, and the safety of the vehicle is greatly improved.
According to the invention, the first power supply circuit and the second power supply circuit are arranged to supply power to the low-position brake lamp driving circuit and the high-position brake lamp driving circuit respectively, so that the whole failure of the brake lamp function can be caused only when the two power supply circuits fail, and the probability of the whole failure of the brake lamp function is effectively reduced.
Fig. 3 shows a driving circuit of a vehicle lamp according to another embodiment of the present invention, including: the low-level brake lamp driving circuit comprises a power supply 7, a first power supply circuit 1, a second power supply circuit 2, a low-level brake lamp driving circuit 3, a high-level brake lamp driving circuit 4, a low-level brake lamp 5, a high-level brake lamp 6, a circuit board 8, a power management chip 9, a micro control unit 10, a low-level brake lamp checking circuit 11 and a high-level brake lamp checking circuit 12, wherein the power supply 7 is respectively and electrically connected with the input end of the first power supply circuit 1 and the input end of the second power supply circuit 2, the output end of the first power supply circuit 1 is electrically connected with the power end of the low-level brake lamp driving circuit 3, the output end of the low-level brake lamp driving circuit 3 is electrically connected with the low-level brake lamp 5 and then grounded, the output end of the second power supply circuit 2 is electrically connected with the input end of the high-level brake lamp driving circuit 4, and the output end of the high-level brake lamp driving circuit 4 is electrically connected with the high-level brake lamp 6 and then grounded;
the first power supply line 1, the second power supply line 2, the low-level brake lamp driving circuit 3, the high-level brake lamp driving circuit 4, a power management chip 9, a micro control unit 10, a low-level brake lamp checking circuit 11 and a high-level brake lamp checking circuit 12 are fixed on the circuit board 8, a first power supply interface 81 and a second power supply interface 82 are further arranged on the circuit board 8, the power supply 7 is electrically connected with the input end of the first power supply line 1 through the first power supply interface 81, and the power supply 7 is electrically connected with the input end of the second power supply line 2 through the second power supply interface 82;
the power supply 7 includes a first power supply 71, the first power supply 71 is electrically connected to the first power supply interface 81 and the second power supply interface 82, and the first power supply 71 is a battery of the vehicle;
the output end of the power management chip 9 is electrically connected with the power end of the micro control unit 10, and the output end of the micro control unit 10 is respectively in communication connection with the control end of the low-level brake lamp driving circuit 3 and the control end of the high-level brake lamp driving circuit 4;
the first power interface 81 is electrically connected to the input terminal of the power management chip 9, or the second power interface 82 is electrically connected to the input terminal of the power management chip 9;
the input end of the low-level brake lamp checking circuit 11 is electrically connected with the low-level brake lamp 5, the output end of the low-level brake lamp checking circuit 11 is in communication connection with the input end of the micro-control unit 10, the input end of the high-level brake lamp checking circuit 12 is electrically connected with the high-level brake lamp 6, and the output end of the high-level brake lamp checking circuit 12 is in communication connection with the input end of the micro-control unit 10.
Specifically, the vehicle lamp driving circuit of the present embodiment includes: the low-level brake lamp driving circuit 3, the high-level brake lamp driving circuit 4, the low-level brake lamp 5, the high-level brake lamp 6, the circuit board 8, the power management chip 9, the micro control unit 10, the low-level brake lamp inspection circuit 11 and the high-level brake lamp inspection circuit 12. The first power supply line 1, the second power supply line 2, the low-order brake lamp driving circuit 3, the high-order brake lamp driving circuit 4, the power management chip 9, the micro control unit 10, the low-order brake lamp inspection circuit 11 and the high-order brake lamp inspection circuit 12 are fixed on the circuit board 8.
In one of the embodiments, the circuit board 8 is a circuit board of a body control module of a vehicle, so that the vehicle lamp driving circuit of the present embodiment is provided within the body control module. The micro control unit 10 may then be implemented using a microcontroller of the vehicle body control module.
In this embodiment, two power supply pins (pin pins) are introduced on the circuit board 8, namely, a first power supply interface 81 and a second power supply interface 82, and the low-level brake lamp driving circuit 3 and the high-level brake lamp driving circuit 4 are powered by the first power supply 71 through the first power supply interface 81 and the second power supply interface 82 respectively, and via the independent first power supply line 1 and second power supply line 2, the first power supply 71 is preferably a battery of the vehicle.
By providing two power interfaces, the first power supply line 1 and the second power supply line 2 are connected respectively, so that the first power supply line 1 and the second power supply line 2 are independent from each other. The brake lamp failure caused by circuit breaking and poor contact of the connector in the circuit board can be effectively prevented.
The first power supply 71 is further connected to the power management chip 9 through the first power interface 81 or the second power interface 82, the power management chip 9 supplies power to the micro control unit 10, and the micro control unit 10 is in communication connection with the low-level brake lamp driving circuit 3 and the high-level brake lamp driving circuit 4, and sends a low-level brake lamp control signal to the low-level brake lamp driving circuit 3 and sends a high-level brake lamp control signal to the high-level brake lamp driving circuit 4 so as to drive the low-level brake lamp 5 and the high-level brake lamp 6. The micro control unit 10 also acquires the inspection signal of the low brake lamp 5 returned from the low brake lamp inspection circuit 11 and the inspection signal of the high brake lamp 6 returned from the high brake lamp inspection circuit 12 together with the low brake lamp inspection circuit 11 and the high brake lamp inspection circuit 12.
According to the embodiment, the first power supply circuit and the second power supply circuit are arranged to supply power to the low-position brake lamp driving circuit and the high-position brake lamp driving circuit respectively, so that the brake lamp function is totally disabled only when the two power supply circuits are disabled, and the probability of the brake lamp function being totally disabled is effectively reduced. The brake lamp failure problem caused by the power supply open circuit fault can be solved, the modification is small, and the modification cost is low.
Fig. 4 shows a driving circuit of a vehicle lamp according to another embodiment of the present invention, including: the low-level brake lamp driving circuit comprises a power supply 7, a first power supply circuit 1, a second power supply circuit 2, a low-level brake lamp driving circuit 3, a high-level brake lamp driving circuit 4, a low-level brake lamp 5, a high-level brake lamp 6, a circuit board 8, a power management chip 9, a micro control unit 10, a low-level brake lamp checking circuit 11 and a high-level brake lamp checking circuit 12, wherein the power supply 7 is respectively and electrically connected with the input end of the first power supply circuit 1 and the input end of the second power supply circuit 2, the output end of the first power supply circuit 1 is electrically connected with the power end of the low-level brake lamp driving circuit 3, the output end of the low-level brake lamp driving circuit 3 is electrically connected with the low-level brake lamp 5 and then grounded, the output end of the second power supply circuit 2 is electrically connected with the input end of the high-level brake lamp driving circuit 4, and the output end of the high-level brake lamp driving circuit 4 is electrically connected with the high-level brake lamp 6 and then grounded;
the first power supply line 1, the second power supply line 2, the low-level brake lamp driving circuit 3, the high-level brake lamp driving circuit 4, a power management chip 9, a micro control unit 10, a low-level brake lamp checking circuit 11 and a high-level brake lamp checking circuit 12 are fixed on the circuit board 8, a first power supply interface 81 and a second power supply interface 82 are further arranged on the circuit board 8, the power supply 7 is electrically connected with the input end of the first power supply line 1 through the first power supply interface 81, and the power supply 7 is electrically connected with the input end of the second power supply line 2 through the second power supply interface 82;
the power supply 7 includes a first power supply 71 and a second power supply 72, the first power supply 71 is electrically connected to the first power interface 81, and the second power supply 72 is electrically connected to the second power interface 82;
the first power supply 71 is a battery of the vehicle, and the second power supply 72 is a dc-dc converter electrically connected to a power battery of the vehicle; or alternatively
The second power supply 72 is a battery of the vehicle, and the first power supply 71 is a dc-dc converter electrically connected to a power battery of the vehicle;
the output end of the power management chip 9 is electrically connected with the power end of the micro control unit 10, and the output end of the micro control unit 10 is respectively in communication connection with the control end of the low-level brake lamp driving circuit 3 and the control end of the high-level brake lamp driving circuit 4;
the first power interface 81 is electrically connected to the input terminal of the power management chip 9, or the second power interface 82 is electrically connected to the input terminal of the power management chip 9;
the input end of the low-level brake lamp checking circuit 11 is electrically connected with the low-level brake lamp 5, the output end of the low-level brake lamp checking circuit 11 is in communication connection with the input end of the micro-control unit 10, the input end of the high-level brake lamp checking circuit 12 is electrically connected with the high-level brake lamp 6, and the output end of the high-level brake lamp checking circuit 12 is in communication connection with the input end of the micro-control unit 10.
Specifically, the vehicle lamp driving circuit of the present embodiment includes: the first power supply 71, the second power supply 72, the first power supply line 1, the second power supply line 2, the low-level brake lamp driving circuit 3, the high-level brake lamp driving circuit 4, the low-level brake lamp 5, the high-level brake lamp 6, the circuit board 8, the power management chip 9, the micro control unit 10, the low-level brake lamp inspection circuit 11, and the high-level brake lamp inspection circuit 12. The first power supply line 1, the second power supply line 2, the low-order brake lamp driving circuit 3, the high-order brake lamp driving circuit 4, the power management chip 9, the micro control unit 10, the low-order brake lamp inspection circuit 11 and the high-order brake lamp inspection circuit 12 are fixed on the circuit board 8.
In one of the embodiments, the circuit board 8 is a circuit board of a body control module of a vehicle, so that the vehicle lamp driving circuit of the present embodiment is provided within the body control module. The micro control unit 10 may then be implemented using a microcontroller of the vehicle body control module.
In this embodiment, two power supply pins (pin pins) are introduced on the circuit board 8, namely, a first power supply interface 81 and a second power supply interface 82, the low-order brake lamp driving circuit 3 is powered by the first power supply 71 through the first power supply interface 81 via the first power supply line 1, and the high-order brake lamp driving circuit 4 is powered by the second power supply 72 through the second power supply interface 82 via the second power supply line 2.
In one embodiment, the first power supply 71 is a battery of the vehicle, and the second power supply 72 is a direct current (DCDC) converter electrically connected to a power battery of the vehicle.
In one embodiment, the second power supply 72 is a battery of the vehicle, and the first power supply 71 is a dc-dc converter electrically connected to a power battery of the vehicle.
By providing two power interfaces, the first power supply line 1 and the second power supply line 2 are connected respectively, so that the first power supply line 1 and the second power supply line 2 are independent from each other. The brake lamp failure caused by circuit breaking and poor contact of the connector in the circuit board can be effectively prevented. Simultaneously, two paths of independent power supplies are provided, and the function failure of the brake lamp can be caused only when the two paths of power supplies are failed. The system has no single point failure, and the probability of the integral failure of the brake lamp function can be effectively reduced.
Preferably, the low-order brake lamp driving circuit 3 is supplied with power by a DCDC converter, and the high-order brake lamp driving circuit 4 is supplied with power by a battery.
The first power supply 71 is further connected to the power management chip 9 through the first power interface 81 or the second power interface 82, the power management chip 9 supplies power to the micro control unit 10, and the micro control unit 10 is in communication connection with the low-level brake lamp driving circuit 3 and the high-level brake lamp driving circuit 4, and sends a low-level brake lamp control signal to the low-level brake lamp driving circuit 3 and sends a high-level brake lamp control signal to the high-level brake lamp driving circuit 4 so as to drive the low-level brake lamp 5 and the high-level brake lamp 6. The micro control unit 10 also acquires the inspection signal of the low brake lamp 5 returned from the low brake lamp inspection circuit 11 and the inspection signal of the high brake lamp 6 returned from the high brake lamp inspection circuit 12 together with the low brake lamp inspection circuit 11 and the high brake lamp inspection circuit 12.
According to the embodiment, the first power supply circuit and the second power supply circuit are arranged to supply power to the low-position brake lamp driving circuit and the high-position brake lamp driving circuit respectively, so that the brake lamp function is totally disabled only when the two power supply circuits are disabled, and the probability of the brake lamp function being totally disabled is effectively reduced. Meanwhile, the two paths of independent power supplies are used for supplying power, and the integral failure of the function of the brake lamp can be caused only when the two paths of power supplies fail. The system has no single point failure, and the probability of the integral failure of the brake lamp function can be effectively reduced.
The invention provides a vehicle, which comprises the driving circuit of the vehicle lamp, wherein the low-position brake lamp 5 and the high-position brake lamp 6 are fixedly connected with the vehicle body of the vehicle.
Specifically, the low-level stop lamp 5 and the high-level stop lamp 6 are fixedly connected to the vehicle body, and other elements of the vehicle lamp driving circuit are accommodated in the vehicle body.
The power supply 7 is a built-in power supply of the vehicle. Including but not limited to a battery and a dc-dc converter electrically connected to a vehicle power battery.
Preferably, the low brake lamp 5 and the high brake lamp 6 are fixed to the tail of the vehicle, and the high brake lamp 6 is installed at a position higher than the low brake lamp 5.
According to the invention, the first power supply circuit and the second power supply circuit are arranged to supply power to the low-position brake lamp driving circuit and the high-position brake lamp driving circuit respectively, so that the whole failure of the brake lamp function can be caused only when the two power supply circuits fail, and the probability of the whole failure of the brake lamp function is effectively reduced.
In one embodiment, the vehicle light driving circuit is disposed within a body control module of a vehicle.
Specifically, the circuit board 8 may be a circuit board of a body control module of a vehicle, so that the vehicle lamp driving circuit of the present embodiment is provided within the body control module. The micro control unit 10 may then be implemented using a microcontroller of the vehicle body control module.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211105950.1A CN117698564A (en) | 2022-09-08 | 2022-09-08 | Vehicle lamp driving circuit and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211105950.1A CN117698564A (en) | 2022-09-08 | 2022-09-08 | Vehicle lamp driving circuit and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN117698564A true CN117698564A (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211105950.1A Pending CN117698564A (en) | 2022-09-08 | 2022-09-08 | Vehicle lamp driving circuit and vehicle |
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| Country | Link |
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| CN (1) | CN117698564A (en) |
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| US4931697A (en) * | 1986-10-07 | 1990-06-05 | Nissan Motor Co., Ltd. | Power supply circuit for automotive brake lamp |
| JP2010030376A (en) * | 2008-07-28 | 2010-02-12 | Koito Mfg Co Ltd | Lighting fixture for vehicle |
| JP2011157053A (en) * | 2010-02-04 | 2011-08-18 | Omron Automotive Electronics Co Ltd | Device for control of brake lamp, and apparatus for control of vehicle equipment |
| WO2013058198A1 (en) * | 2011-10-17 | 2013-04-25 | 日産自動車株式会社 | Brake light control device |
| CN204870719U (en) * | 2015-08-12 | 2015-12-16 | 安徽江淮汽车股份有限公司 | Trailer stop lamp control circuit |
| CN205589100U (en) * | 2016-05-13 | 2016-09-21 | 安徽机电职业技术学院 | High low level stop lamp failure alarm device of automobile |
| CN106627348A (en) * | 2016-12-29 | 2017-05-10 | 北京长城华冠汽车技术开发有限公司 | Novel automobile brake lamp control system and method |
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2022
- 2022-09-08 CN CN202211105950.1A patent/CN117698564A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4931697A (en) * | 1986-10-07 | 1990-06-05 | Nissan Motor Co., Ltd. | Power supply circuit for automotive brake lamp |
| JP2010030376A (en) * | 2008-07-28 | 2010-02-12 | Koito Mfg Co Ltd | Lighting fixture for vehicle |
| JP2011157053A (en) * | 2010-02-04 | 2011-08-18 | Omron Automotive Electronics Co Ltd | Device for control of brake lamp, and apparatus for control of vehicle equipment |
| WO2013058198A1 (en) * | 2011-10-17 | 2013-04-25 | 日産自動車株式会社 | Brake light control device |
| CN204870719U (en) * | 2015-08-12 | 2015-12-16 | 安徽江淮汽车股份有限公司 | Trailer stop lamp control circuit |
| CN205589100U (en) * | 2016-05-13 | 2016-09-21 | 安徽机电职业技术学院 | High low level stop lamp failure alarm device of automobile |
| CN106627348A (en) * | 2016-12-29 | 2017-05-10 | 北京长城华冠汽车技术开发有限公司 | Novel automobile brake lamp control system and method |
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