Vehicle high and low beam control system and control method, and vehicle

Abstract

Disclosed are a vehicle high and low beam control system and control method, and a vehicle. The control system comprises a signal receiving module, a light source module, and a control module; the signal receiving module is configured to receive an indication signal for enabling or disabling a high / low beam function, and the control module is connected to the signal receiving module, so as to execute, on the basis of the indication signal, an operation of enabling or disabling the high / low beam function; the light source module comprises a low-beam circuit and a high-beam circuit, and the low-beam circuit comprises a main low-beam circuit and an auxiliary low-beam circuit; the control module is separately connected to the low-beam circuit and the high-beam circuit, and when the indication signal received by the signal receiving module is to enable the high-beam function, the control module controls the high-beam circuit and at least one low-beam circuit to be switched on, and controls at least one main low-beam circuit to be disconnected. The control system can reduce the offset of the Emax value of a high-beam pattern, is more conducive to meeting the requirement that the brightness of the HV point of the high-beam pattern is greater than 80% of the Emax value, and can also reduce the high-beam power.

Description

Vehicle high and low beam control system, control method and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Chinese patent application No. 202310921955.X filed on July 26, 2023, the contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to vehicle light control, and in particular to a vehicle high and low beam control system, a control method and a vehicle. Background Art

[0004] Vehicle headlights have two functions: low beam and high beam. Low beam lighting primarily aims to meet the lighting range and brightness requirements while not dazzling other vehicles on the road, thereby preventing them from dazzling other drivers and compromising driving safety. High beam lighting is activated when there are no other vehicles on the road or when they are at a greater distance, providing a longer illumination range. In existing headlight designs, regulations and standards for high beam and low beam differ. High beams are designed to focus light for long-range illumination, while low beams are designed to spread light for wider vision at close range.

[0005] When the lights are inspected before leaving the factory, the low beam and high beam patterns are tested separately. Only lights that meet the requirements are allowed to leave the factory. Based on this, technicians generally only consider whether the low beam pattern or high beam pattern obtained when the low beam light source and the high beam light source are lit separately meet the requirements. However, what technicians ignore is that in actual use, the high beam pattern of the vehicle is the superposition of the low beam pattern and the high beam pattern, which will lead to the E of the high beam pattern. max The value is offset, and the brightness of the intersection of the HH axis (the horizontal line passing through the HV point on the light distribution screen, that is, the horizontal axis of the light distribution screen) and the VV axis (the plumb line passing through the HV point on the light distribution screen, that is, the vertical axis of the light distribution screen) of the high beam pattern (that is, the HV point, the horizontal line through the reference center of the lamp to the vertical foot on the light distribution screen) cannot meet the E of more than 80%. max The value (the illuminance value of the brightest point on the light distribution screen within a rectangular range of 5 degrees above, below, left and right of the intersection of the HH axis and the VV axis) is required, and when the high beam is turned on, the high beam light source and the low beam light source are fully turned on, resulting in excessive high beam power.

[0006] Summary of the Invention

[0007] One of the purposes of the present invention is to provide a vehicle high and low beam control system, which can reduce the E max The value deviation degree even prevents the high beam type E maxThe value offset is more conducive to the E of the high beam light type with the brightness of the intersection of the HH axis and the VV axis greater than 80%. max value requirements, while reducing the high beam power when the high beam is turned on.

[0008] The second object of the present invention is to provide a vehicle high and low beam control method, which can reduce the high beam light type E max The value deviation is so great that it even prevents the high beam type E max The value offset is more conducive to the E of the high beam light type with the brightness of the intersection of the HH axis and the VV axis greater than 80%. max value requirements, while reducing the high beam power when the high beam is turned on.

[0009] The third object of the present invention is to provide a vehicle that can reduce the high beam type E max The value deviation is so great that it even prevents the high beam type E max The value offset is more conducive to the E of the high beam light type with the brightness of the intersection of the HH axis and the VV axis greater than 80%. max value requirements, while reducing the high beam power when the high beam is turned on.

[0010] In order to achieve the above-mentioned object, the first aspect of the present invention provides a vehicle high and low beam control system, comprising a signal receiving module, a light source module and a control module;

[0011] The signal receiving module is adapted to receive an instruction signal for turning on or off the high / low beam function, and the control module is connected to the signal receiving module to execute the operation of turning on or off the high / low beam function according to the instruction signal;

[0012] The light source module includes a low beam circuit and a high beam circuit, wherein the low beam circuit includes at least one main low beam circuit for mainly contributing to brightness and at least one auxiliary low beam circuit for mainly contributing to widening;

[0013] The control module is respectively connected to the main low beam circuit, the auxiliary low beam circuit and the high beam circuit. When the indication signal received by the signal receiving module is to turn on the low beam function, the control module controls the main low beam circuit and the auxiliary low beam circuit to be turned on and controls the high beam circuit to be turned off; when the indication signal received by the signal receiving module is to turn on the high beam function, the control module controls the high beam circuit and at least one low beam circuit to be turned on, and controls at least one main low beam circuit to be turned off.

[0014] Preferably, when the instruction signal received by the signal receiving module is to turn on the high beam, the control module controls the high beam circuit and the auxiliary low beam circuit to be turned on, and controls at least one main low beam circuit to be turned off.

[0015] Further preferably, the control module includes a power supply and a control circuit, the control circuit includes a main circuit that connects the power supply, the auxiliary low beam circuit and the main low beam circuit into a loop, a branch connected between the main circuit and the power supply, and a control switch arranged at the intersection of the main circuit and the branch, the high beam circuit is arranged on the branch, and one end of the branch is connected between the auxiliary low beam circuit and the main low beam circuit or between the two main low beam circuits, and the other end of the branch is connected between the main low beam circuit and the power supply.

[0016] Preferably, the low beam circuit includes at least two main low beam circuits and at least two auxiliary low beam circuits. When the indication signal received by the signal receiving module is to turn on the high beam, the control module controls the high beam circuit and at least one of the auxiliary low beam circuits to be turned on, and also controls at least one of the auxiliary low beam circuits to be turned off from the main low beam circuit.

[0017] Further preferably, the control module includes a power supply and a control circuit, the control circuit includes a main circuit that connects the power supply, the auxiliary low beam circuit and the main low beam circuit into a loop, a branch connected between the main circuit and the power supply, and a control switch arranged at the intersection of the main circuit and the branch, the high beam circuit is arranged on the branch, and one end of the branch is connected between the two auxiliary low beam circuits, and the other end of the branch is connected between the main low beam circuit and the power supply.

[0018] Typically, the control circuit further includes a thermal protection circuit, in which a thermal protection resistor is provided. A closed loop is formed between the thermal protection circuit, the thermal protection resistor and the power supply.

[0019] A second aspect of the present invention provides a vehicle high and low beam control method, comprising:

[0020] The light source module includes a low beam circuit and a high beam circuit, wherein the low beam circuit includes at least one main low beam circuit for mainly contributing to brightness and at least one auxiliary low beam circuit for mainly contributing to widening;

[0021] Receive an indication signal for turning on the high / low beam function and perform the operation of turning on or off the high / low beam according to the indication signal. When the indication signal received is to turn on the low beam, control the main low beam circuit and the auxiliary low beam circuit to be turned on and control the high beam circuit to be turned off; when the indication signal received is to turn on the high beam, control the high beam circuit and at least one low beam circuit to be turned on, and control at least one main low beam circuit to be turned off.

[0022] Preferably, when the received instruction signal is to turn on the high beam, the high beam circuit and the auxiliary low beam circuit are controlled to be turned on, and at least one main low beam circuit is controlled to be turned off.

[0023] Preferably, the low beam circuit includes at least two main low beam circuits and at least two auxiliary low beam circuits. When the received instruction signal is to turn on the high beam, the high beam circuit and at least one of the auxiliary low beam circuits are controlled to be turned on, and at least one of the auxiliary low beam circuits and the main low beam circuit are also controlled to be disconnected.

[0024] A third aspect of the present invention provides a vehicle, which includes the vehicle high and low beam control system described in the first aspect and executes the high and low beam control method described in the second aspect.

[0025] Through the above technical solution, when the instruction signal received by the signal receiving module is to turn on the high beam function, the control module controls the high beam circuit and at least one low beam circuit to be turned on, and at the same time controls at least one main low beam circuit to be turned off, which can reduce the E of the high beam light type. max The value deviation is so great that the E max The value is not offset, which is more conducive to meeting the E of the high beam type with the brightness of the intersection of the HH axis and the VV axis greater than 80%. max value requirements, and at the same time, it can also reduce the brightness difference between the middle and lower parts of the high beam pattern and the upper part, thereby ensuring driving safety.

[0026] Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a hardware schematic diagram of a specific embodiment of the present invention;

[0028] FIG2 is a schematic diagram of the illumination of a high beam on a light distribution screen in the prior art;

[0029] FIG3 is a schematic diagram of the illumination of a high beam on a light distribution screen according to an embodiment of the present invention;

[0030] FIG4 is a schematic diagram of the illumination of the low beam type;

[0031] FIG5 is a schematic diagram of high beam illumination;

[0032] Figure 6 is a schematic diagram of the main low beam illumination;

[0033] FIG7 is a schematic diagram of the auxiliary low beam illumination;

[0034] FIG8 is a schematic diagram of the light pattern and illumination of one of the left and right main low-beam lamps;

[0035] FIG9 is a schematic diagram of the light pattern and illumination of the other main low-beam lamp on the left and right sides;

[0036] FIG10 is a schematic diagram of the light pattern and illumination of one of the left and right auxiliary low-beam lamps;

[0037] FIG11 is a schematic diagram of the light pattern and illumination of the auxiliary low-beam lamp on the other side of the left and right auxiliary low-beam lamps.

[0038] Explanation of Reference Numerals 1 - Main low-beam light source; 2 - High-beam light source; 3 - Auxiliary low-beam light source; 4 - Power supply; 5 - Control switch; 6 - Thermal protection resistor DETAILED DESCRIPTION

[0039] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the scope of protection of the present invention is not limited to the specific embodiments described below.

[0040] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted" and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediate medium; they may refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0041] As a basic embodiment of the present invention, a vehicle high and low beam control system is provided, comprising a signal receiving module, a light source module and a control module; the signal receiving module is adapted to receive an instruction signal for turning on or off the high / low beam function, and the control module is connected to the signal receiving module to perform the operation of turning on or off the high / low beam according to the instruction signal; the light source module comprises a low beam circuit and a high beam circuit, the low beam circuit comprises at least one main low beam circuit and at least one auxiliary low beam circuit, the main low beam circuit is used to mainly contribute to brightness, the auxiliary low beam circuit is used to mainly contribute to width, and each main low beam circuit has at least It includes a main low beam light source 1, each auxiliary low beam circuit includes at least one auxiliary low beam light source 3, and each high beam circuit includes at least one high beam light source 2; the control module is connected to the main low beam circuit, the auxiliary low beam circuit and the high beam circuit respectively, and when the indication signal received by the signal receiving module is to turn on the low beam function, the control module controls the main low beam circuit and the auxiliary low beam circuit to be turned on and controls the high beam circuit to be turned off; when the indication signal received by the signal receiving module is to turn on the high beam function, the control module controls the high beam circuit and at least one low beam circuit to be turned on, and controls at least one main low beam circuit to be turned off.

[0042] According to the present invention, the signal receiving module can be a signal receiving device that comes with the headlight itself, and the vehicle sends the corresponding high / low beam function on or off signal to the signal receiving module. The signal sending device can be any feasible signal sending device in the existing technology, such as a high / low beam controller set on the steering wheel, and the high / low beam on or off signal is input into the signal receiving module by toggling the high / low beam controller up and down.

[0043] According to the present invention, the main low-beam circuit can be configured as multiple circuits, each of which is provided with at least one main low-beam light source 1. During actual control, one of the multiple main low-beam circuits can be controlled to be disconnected, or multiple main low-beam circuits can be controlled to be disconnected. The low-beam circuit that is turned on can be an auxiliary low-beam circuit, or an auxiliary low-beam circuit and a main low-beam circuit.

[0044] When the vehicle high and low beam control system provided by the above basic implementation method is working, the vehicle sends an indication signal for turning the high / low beam function on or off, and the signal receiving module of the vehicle high and low beam control system receives the indication signal for turning the high / low beam function on or off. When the indication signal received by the signal receiving module is to turn on the low beam function, the control module controls the low beam circuit to be turned on and controls the high beam circuit to be turned off; when the indication signal received by the signal receiving module is to turn on the high beam function, the control module controls the high beam circuit and at least one low beam circuit to be turned on, and controls at least one main low beam circuit to be turned off.

[0045] The vehicle high and low beam control system provided by the above basic implementation method, when the signal receiving module receives the instruction signal to turn on the high beam function, the control module controls the high beam circuit and at least one low beam circuit to be conductive, and controls at least one main low beam circuit to be disconnected. The total power is the power consumed by the low beam circuit and the high beam circuit with higher power, which consumes less power than the traditional circuit that turns on both the high and low beam lights when the high beam is turned on. In addition, when the high beam is turned on, the high beam light pattern E max The value deviation is reduced and even the E of the high beam light type is projected. max The value is not offset, which is more conducive to making the brightness of the intersection of the HH axis and the VV axis of the high beam pattern meet the E value of more than 80%. max regulatory requirements for values.

[0046] E max The value refers to the illuminance value of the brightest point on the light distribution screen within a rectangular range of 5 degrees above, below, left and right of the intersection of the HH axis and the VV axis. The light distribution screen refers to the vertical screen 25 meters in front of the vehicle.

[0047] When the high beam is turned on, the superimposed light pattern of the high beam and the low beam will be obtained on the light distribution screen (as shown in Figure 3). However, since the illumination of the low beam near the intersection of the HH axis and the VV axis (i.e., the center area of ​​the low beam) is higher (Figure 4), and the 75R measuring point must meet the minimum value requirements of the regulations, and the light and dark cut-off line of the low beam has an asymmetric characteristic (low on the left and high on the right as shown in Figure 4), it is easy to cause the E of the high beam when the low beam and the high beam (Figure 5) are superimposed. max The value is offset, and the brightness of the intersection of the HH axis and the VV axis of the high beam cannot meet the E value greater than 80%. max This is a problem that technicians have always ignored.

[0048] Based on the above reasons, the present invention selects to disconnect part of the main low beam circuit or all the main low beam circuit when the high beam is turned on to reduce the E max The value deviation is so great that the E max The value is not offset, which is more conducive to the high beam light pattern HH axis and VV axis intersection brightness to meet more than 80% of E max In addition, disconnecting part of the main low-beam circuit can also reduce the power of the high-beam, but it does not affect the lighting requirements of the vehicle.

[0049] In a specific embodiment of the present invention, the low beam circuit includes at least two main low beam circuits and at least two auxiliary low beam circuits. Correspondingly, each main low beam circuit is provided with at least one main low beam light source 1, and each auxiliary low beam circuit is provided with at least one auxiliary low beam light source 3. When the signal receiving module receives an instruction signal indicating that the low beam is to be turned on, the control module controls the main low beam circuit and the auxiliary low beam circuit to be turned on. When the signal receiving module receives an instruction signal indicating that the high beam is to be turned on, the control module controls the high beam circuit and the auxiliary low beam circuit to be turned on and the main low beam circuit to be turned off. Alternatively, the control module controls the high beam circuit, the auxiliary low beam circuit, and at least one main low beam circuit to be turned on and the at least one main low beam circuit to be turned off. Alternatively, the control module controls the high beam circuit and at least one auxiliary low beam circuit to be turned on and the main low beam circuit and at least one auxiliary low beam circuit to be turned off. When the high beam is on, disconnecting some of the main low beam circuits, or all of the main low beam circuits, or all of the main low beam circuits and some of the auxiliary low beam circuits can reduce the power of the high beam. The main low beam pattern (as shown in FIG6 ) and the auxiliary low beam pattern (as shown in FIG7 ) obtained by projecting the light emitted by the main low beam light source 1 and the auxiliary low beam light source 3 are superimposed on the high beam pattern. The superimposed area is located at E max The value test area (i.e. the rectangular range of 5 degrees above, below, left and right of the intersection of the HH axis and the VV axis on the light distribution screen) is used to prevent the E max The value is offset so that the brightness of the intersection of the HH axis and the VV axis of the high beam cannot meet the E value of more than 80%. maxIn order to meet the regulatory requirements of the value, it is possible to choose to disconnect part of the main low beam circuit, or disconnect all the main low beam circuits, or disconnect all the main low beam circuits and part of the auxiliary low beam circuits. In some specific implementations, the conduction and disconnection of the main low beam circuit and the auxiliary low beam circuit at the start of high beam are determined based on the correspondence between the main low beam circuit and the auxiliary low beam circuit and the superimposed area. Specifically, a plurality of quasi-low beam light types can be obtained according to the conduction and disconnection of the main low beam circuit and the auxiliary low beam circuit. As a specific embodiment of the present invention, the main low beam circuit and / or auxiliary low beam circuit corresponding to the quasi-low beam light type with the largest disconnected light type area is used as the setting of the low beam circuit at the start of high beam. The present invention is not limited to this. The present invention can realize more situations of determining the conduction and disconnection of the main low beam circuit and the auxiliary low beam circuit when the high beam is turned on, which will not be repeated here. Generally located below the HH axis, the above setting can further reduce the E of the high beam light type. max The degree of downward deviation makes the high beam light pattern conform to the high beam HV point (the intersection of the HH axis and the VV axis) with a brightness greater than 80% of the E max Value requirements.

[0050] According to the present invention, the auxiliary low beam circuit can be set to multiple channels, and each auxiliary low beam circuit is provided with at least one auxiliary low beam light source 3. In the actual control process, one of the multiple auxiliary low beam circuits can be controlled to be disconnected, or multiple auxiliary low beam circuits can be controlled to be disconnected.

[0051] In a preferred embodiment of the present invention, the low beam circuit includes at least one main low beam circuit and at least one auxiliary low beam circuit. Accordingly, at least one main low beam light source 1 is provided in the main low beam circuit, and at least one auxiliary low beam light source 3 is provided in the auxiliary low beam circuit. When the signal received by the signal receiving module is to turn on the low beam, the control module controls the main low beam circuit and the auxiliary low beam circuit to be turned on; when the signal received by the signal receiving module is to turn on the high beam, the control module controls the high beam circuit and at least one auxiliary low beam circuit to be turned on, and disconnects at least one main low beam circuit.

[0052] Since in the low beam light type, the main low beam light source 1 mainly contributes to the brightness, the auxiliary low beam light source 3 mainly contributes to the broadening, and the higher illumination in the center area of ​​the low beam light type is mainly contributed by the main low beam light source 1, so when the low beam light type and the high beam light type are superimposed, the E of the high beam is reduced. max Value offset or prevent high beam E max By setting the value offset, only the main low beam light source 1 can be turned off.

[0053] In one embodiment of the present invention, as shown in FIG1 , a control module includes a power supply 4 and a control circuit. The control circuit includes a main circuit connecting the power supply 4, an auxiliary low-beam circuit, and a main low-beam circuit into a loop; a branch circuit connected between the main circuit and the power supply 4; and a control switch 5 disposed at the intersection of the main circuit and the branch circuit. The high-beam circuit is disposed on the branch circuit, with one end of the branch circuit connected between the main low-beam circuit and the auxiliary low-beam circuit or between the two main low-beam circuits, and the other end connected to a first end of the control switch 5. The second end of the control switch 5 is connected to the main low-beam circuit, and the third end of the control switch 5 is connected to the power supply 4. During operation, the third end of the control switch 5 can be connected to the second end so that the auxiliary low-beam circuit and the main low-beam circuit are in a closed loop; the first end and the third end of the control switch 5 can also be connected in a conductive circuit so that the auxiliary low-beam circuit and the high-beam circuit are in a closed loop, or the auxiliary low-beam circuit, the high-beam circuit, and part of the main low-beam circuit are in a closed loop. In another embodiment, one end of the branch circuit can also be connected between the two auxiliary low-beam circuits. FIG1 merely schematically illustrates a hardware structure of the present invention, and the present invention is not limited thereto. Other circuit structures that can implement the circuit control of the present invention are within the protection scope of the present invention.

[0054] Specifically, when only the main low-beam light source 1 is turned off when the high beam is on, one end of the branch circuit is connected between the main low-beam circuit and the auxiliary low-beam circuit, or between the two main low-beam circuits, or between the two auxiliary low-beam circuits, and the other end is connected to a control switch 5, which is disposed between the main low-beam circuit and the power supply 4, or between the high beam circuit and the power supply 4. When the high beam is on, not only the main low-beam light source 1 but also some of the auxiliary low-beam light sources 3 need to be turned off, one end of the branch circuit is connected between the two auxiliary low-beam circuits, and the other end is connected to the control switch 5. The control switch 5 can be a single-pole double-throw switch or two independent switches. When the low beam is on, the control switch 5 connects the main circuit passing through the power supply 4, the auxiliary low-beam light sources 3, and the main low-beam light source 1, while disconnecting the branch circuit. When the high beam is on, the control switch 5 connects the portion of the main circuit passing through the power supply 4 and the branch circuit passing through the high beam light source 2, while disconnecting the portion of the main circuit where at least one main low-beam light source 1 is located.

[0055] The control module provided above can realize the switching between high and low beam mentioned in the present invention, and has a simple structure and consumes less power than the traditional circuit that fully turns on the high and low light sources when turning on the high beam. At the same time, it can also reduce the E max The value of the deviation or the E that prevents the high beam type max The value is offset so that the high beam pattern conforms to the E of the high beam pattern with the brightness of the intersection of the HH axis and the VV axis greater than 80%. max Value requirements.

[0056] In a preferred embodiment of the present invention, one end of the branch is connected between the main low beam circuit and the auxiliary low beam circuit, and the other end is connected to the control switch 5, which is set between the main low beam circuit and the power supply 4 or between the high beam circuit and the power supply 4. When the high beam is turned on, all the main low beam light sources 1 can be controlled to not work, while the auxiliary low beam light source 3 can work. While reducing the high beam power, it can also prevent the high beam type E max The value is offset so that the brightness of the intersection of the HH axis and the VV axis of the high beam pattern is greater than 80% of the E max Value requirements.

[0057] In one embodiment of the present invention, the control circuit further includes a thermal protection circuit, in which a thermal protection resistor 6 is provided. A closed loop is formed between the thermal protection circuit, the thermal protection resistor 6, and the power supply. The provision of the thermal protection resistor 6 protects the power supply 4, thereby extending the service life of the vehicle lamp.

[0058] As a relatively preferred embodiment of the control system part of the present invention, as shown in Figure 1, it includes a signal receiving module, a light source module and a control module; the signal receiving module is suitable for receiving an indication signal of whether to turn on the high / low beam, and the control module is connected to the signal receiving module to execute the operation of whether to turn on the high / low beam according to the indication signal; the light source module includes a main low beam circuit, a high beam circuit and an auxiliary low beam circuit, the main low beam circuit is provided with at least two main low beam light sources 1, the high beam circuit is provided with at least two high beam light sources 2, and the auxiliary low beam circuit is provided with at least two auxiliary low beam light sources 3; the control module includes a power supply 4 and a control circuit The control circuit includes a thermal protection circuit for protecting the power supply 4, a main circuit connecting the power supply 4, the auxiliary low-beam circuit and the main low-beam circuit into a loop, a branch connected between the main circuit and the power supply 4, and a control switch 5 arranged at the intersection of the main circuit and the branch; a thermal protection resistor 6 is provided on the thermal protection circuit, and a closed loop is formed between the thermal protection circuit, the thermal protection resistor 6 and the power supply 4; the high-beam light source 2 is arranged on the branch, and one end of the branch is connected between the main low-beam circuit and the auxiliary low-beam circuit, and the other end is connected to the control switch 5, which is arranged between the main low-beam circuit and the power supply 4 or between the high-beam circuit and the power supply 4. Of course, one end of the branch can also be connected to the main low-beam circuit (that is, between the two main low-beam light sources 1) or the auxiliary low-beam circuit (that is, between the two auxiliary low-beam light sources), and the other end is connected to the control switch 5, which is arranged between the main low-beam circuit and the power supply 4 or between the high-beam circuit and the power supply 4, which will not be repeated here.

[0059] According to the present invention, in FIG1 , LB refers to a low beam signal, HB refers to a high beam signal, GND is a ground terminal of a wire, NTC is a thermistor circuit, and LDO_5V is a 5V LDO power chip.

[0060] In the specific implementation shown in Figure 1, when the two main low-beam light sources 1 are lit separately, the corresponding light patterns obtained by projection are shown in Figures 8 and 9, and the superimposed main low-beam light pattern of the two is shown in Figure 6. The superimposed light pattern meets the illumination requirements of the measuring point in the low-beam regulatory area.

[0061] When the two auxiliary low-beam light sources 3 are respectively lit, the corresponding light patterns obtained by projection are shown in Figures 10 and 11, and the superimposed light pattern of the two is shown in Figure 7. The superimposed light pattern meets the illumination range required by the low-beam standard, that is, the widening requirement.

[0062] The final low beam pattern obtained by superimposing the two superimposed light patterns is shown in FIG4 , which is superimposed with the high beam pattern shown in FIG5 to obtain the lighting pattern when the high beam is turned on as shown in FIG2 . max To solve the problem of value offset, if only the auxiliary low beam light pattern shown in Figure 7 is superimposed with the high beam light pattern shown in Figure 5, the lighting light pattern when the high beam is turned on as shown in Figure 3 can be obtained. The high beam E max The value is basically not offset, which is more conducive to the E of the high beam type with a brightness greater than 80% at the intersection of the HH axis and the VV axis. max Value requirements, at the same time, because the main low beam light source 1 is not involved, the power when the high beam is turned on is significantly reduced.

[0063] Through the above settings, in actual use, it is necessary to adjust the opening and closing of the control switch 5 to realize the switching of high and low beams. At the same time, the system can make the high beam type E max The value is basically not offset (the high beam pattern without the method of the present invention is shown in FIG2, and the high beam pattern with the method of the present invention is shown in FIG3), which is more conducive to meeting the E of the high beam pattern with a brightness greater than 80% at the intersection of the HH axis and the VV axis. max value requirements, while reducing the power when the high beam is turned on.

[0064] A second basic embodiment of the present invention provides a vehicle high and low beam control method, comprising:

[0065] The light source module includes a low beam circuit and a high beam circuit. The low beam circuit includes at least one main low beam circuit and at least one auxiliary low beam circuit. The main low beam circuit is used to mainly contribute to brightness, and the auxiliary low beam circuit is used to mainly contribute to widening. It receives an indication signal of whether to turn on or off the high / low beam and executes the operation of turning on or off the high / low beam according to the indication signal. When the received indication signal is to turn on the low beam, the main low beam circuit and the auxiliary low beam circuit are controlled to be turned on and the high beam circuit is controlled to be disconnected. When the received indication signal is to turn on the high beam, the high beam circuit and at least one low beam circuit are controlled to be turned on, and the at least one main low beam circuit is controlled to be disconnected.

[0066] The vehicle high and low beam control method provided by the present invention can be implemented based on the vehicle high and low beam control system provided above.

[0067] The vehicle high and low beam control method provided by the above basic embodiment of the present invention controls the high beam circuit and at least one low beam circuit to be turned on and controls at least one main low beam circuit to be turned off when the received instruction signal is to turn on the high beam, thereby reducing the E of the high beam pattern. max The value deviation is so great that it even prevents the high beam type E max The value offset is more conducive to the E of the high beam light type with the brightness of the intersection of the HH axis and the VV axis greater than 80%. max value requirements, while reducing the power when the high beam is turned on.

[0068] In a specific embodiment of the present invention, the low beam circuit includes a main low beam circuit and an auxiliary low beam circuit. When the received instruction signal is to turn on the low beam, the main low beam circuit and the auxiliary low beam circuit are controlled to be turned on; when the received instruction signal is to turn on the high beam, at least one main low beam circuit is controlled to be turned off. max The value offset even prevents the high beam type E max The value is offset so that the high beam pattern meets the E value when the brightness of the intersection of the HH axis and the VV axis is greater than 80%. max Value requirements.

[0069] As a preferred embodiment of the present invention, when the received information is to turn on the high beam, the main low beam circuit is controlled to be disconnected. That is to say, all the main low beam light sources 1 are controlled to be turned off, which can better prevent the high beam type E max The value is offset so that the high beam pattern meets the E value when the brightness of the intersection of the HH axis and the VV axis is greater than 80%. max Value requirements.

[0070] As a relatively preferred embodiment of the control method of the present invention, the main low beam circuit includes at least two main low beam light sources 1, the high beam circuit includes at least two high beam light sources 2, and the auxiliary low beam circuit includes at least two auxiliary low beam light sources 3; an indication signal of whether to turn on the high / low beam is received and an operation of turning on the high and low beam is performed according to the indication signal. When the indication signal received is to turn on the low beam, the main low beam circuit and the auxiliary low beam circuit are controlled to be turned on, and the high beam circuit is disconnected, that is, the main low beam light source 1 and the auxiliary low beam light source 3 are controlled to be turned on and the high beam light source 2 is controlled to be turned off; when the indication signal received is to turn on the high beam, the high beam circuit and the auxiliary low beam circuit are controlled to be turned on, and the main low beam circuit is disconnected, that is, the high beam light source 2 and the auxiliary low beam light source 3 are controlled to be turned on, and the main low beam light source 1 is controlled to be turned off. In another embodiment, when the indication signal received is to turn on the high beam, at least one of the auxiliary low beam circuits is also controlled to be disconnected.

[0071] The control method provided by the above preferred embodiment can better make the E of the high beam type max The value is not offset, which is more conducive to meeting the E of the high beam type with the brightness of the intersection of the HH axis and the VV axis greater than 80%. max value requirements, and can also reduce the high beam power.

[0072] As a third basic embodiment of the present invention, a vehicle is provided, comprising the vehicle high and low beam control system described in any of the aforementioned embodiments and executing the high and low beam control method described in any of the aforementioned implementation schemes. This vehicle possesses all the advantages of the aforementioned vehicle high and low beam control system and vehicle high and low beam control method, which will not be elaborated upon here.

[0073] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0074] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0075] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A vehicle high and low beam control system, characterized in that: It includes a signal receiving module, a light source module and a control module; The signal receiving module is adapted to receive an instruction signal for turning on or off the high / low beam function, and the control module is connected to the signal receiving module to perform the operation of turning on or off the high / low beam according to the instruction signal; The light source module includes a low beam circuit and a high beam circuit, wherein the low beam circuit includes at least one main low beam circuit for mainly contributing to brightness and at least one auxiliary low beam circuit for mainly contributing to widening; The control module is respectively connected to the main low beam circuit, the auxiliary low beam circuit and the high beam circuit. When the indication signal received by the signal receiving module is to turn on the low beam function, the control module controls the main low beam circuit and the auxiliary low beam circuit to be turned on and controls the high beam circuit to be turned off; when the indication signal received by the signal receiving module is to turn on the high beam function, the control module controls the high beam circuit and at least one of the low beam circuits to be turned on, and controls at least one of the main low beam circuits to be turned off.

2. The vehicle high and low beam control system according to claim 1, characterized in that: When the indication signal received by the signal receiving module is to turn on the high beam, the control module controls the high beam circuit and the auxiliary low beam circuit to be turned on, and controls at least one main low beam circuit to be turned off.

3. The vehicle high and low beam control system according to claim 2, characterized in that: The control module includes a power supply and a control circuit, the control circuit includes a main circuit that connects the power supply, an auxiliary low beam circuit and a main low beam circuit into a loop, a branch connected between the main circuit and the power supply, and a control switch arranged at the intersection of the main circuit and the branch, the high beam circuit is arranged on the branch, and one end of the branch is connected between the auxiliary low beam circuit and the main low beam circuit or between two main low beam circuits, and the other end of the branch is connected between the main low beam circuit and the power supply.

4. The vehicle high and low beam control system according to claim 1, characterized in that: The low beam circuit includes at least two main low beam circuits and at least two auxiliary low beam circuits. When the indication signal received by the signal receiving module is to turn on the high beam, the control module controls the high beam circuit and at least one of the auxiliary low beam circuits to be turned on, and also controls at least one of the auxiliary low beam circuits to be turned off from the main low beam circuit.

5. The vehicle high and low beam control system according to claim 4, characterized in that: The control module includes a power supply and a control circuit, the control circuit includes a main circuit that connects the power supply, the auxiliary low beam circuit and the main low beam circuit into a loop, a branch connected between the main circuit and the power supply, and a control switch arranged at the intersection of the main circuit and the branch, the high beam circuit is arranged on the branch, and one end of the branch is connected between the two auxiliary low beam circuits, and the other end of the branch is connected between the main low beam circuit and the power supply.

6. The vehicle high and low beam control system according to claim 3 or 5, characterized in that: The control circuit further comprises a thermal protection circuit, in which a thermal protection resistor is arranged, and a closed loop is formed between the thermal protection circuit, the thermal protection resistor and the power supply.

7. A vehicle high and low beam control method, characterized in that: include: The light source module includes a low beam circuit and a high beam circuit, wherein the low beam circuit includes at least one main low beam circuit for mainly contributing to brightness and at least one auxiliary low beam circuit for mainly contributing to widening; An indication signal for turning on the high / low beam function is received and the operation of turning on or off the high / low beam is performed according to the indication signal. When the indication signal received is to turn on the low beam, the main low beam circuit and the auxiliary low beam circuit are controlled to be turned on and the high beam circuit is controlled to be turned off; when the indication signal received is to turn on the high beam, the high beam circuit and at least one low beam circuit are controlled to be turned on, and at least one main low beam circuit is controlled to be turned off.

8. The vehicle high and low beam control method according to claim 7, characterized in that: When the received indication signal is to turn on the high beam, the high beam circuit and the auxiliary low beam circuit are controlled to be turned on, and at least one main low beam circuit is controlled to be turned off.

9. The vehicle high and low beam control method according to claim 7, characterized in that: The low beam circuit includes at least two main low beam circuits and at least two auxiliary low beam circuits. When the received indication signal is to turn on the high beam, the high beam circuit and at least one of the auxiliary low beam circuits are controlled to be turned on, and at least one of the auxiliary low beam circuits is controlled to be disconnected from the main low beam circuit.

10. A vehicle, characterized in that: It comprises the vehicle high and low beam control system according to any one of claims 1-6, and executes the vehicle high and low beam control method according to any one of claims 7-9.

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