CN117939718A

CN117939718A - Car light system

Info

Publication number: CN117939718A
Application number: CN202410078551.3A
Authority: CN
Inventors: 何智远; 黎亚; 王姝
Original assignee: Deep Blue Automotive Technology Co ltd
Current assignee: Deep Blue Automotive Technology Co ltd
Priority date: 2024-01-18
Filing date: 2024-01-18
Publication date: 2024-04-26

Abstract

The invention provides a car lamp system, which comprises a whole car domain controller and a lamp panel module, wherein the lamp panel module comprises a circuit board, a direct current converter, a data transceiver, a matrix controller and a car lamp matrix, the direct current converter, the data transceiver and the matrix controller are all arranged on the circuit board close to the car lamp matrix, compared with the prior art, the power supply conversion and the data transceiver are all arranged at an execution end, a microcontroller at the next stage is canceled, all logic control is completed by the whole car domain controller, the logic control architecture of the car lamp system is simplified, hardware consumption is reduced, cost and power consumption are reduced, meanwhile, the logic control of the car lamp system is integrated into the whole car domain controller, the control requirement under the control of the whole car domain is met, the upgrading iteration corresponding to the logic control module is more convenient, and the management efficiency is higher.

Description

Car light system

Technical Field

The application relates to the technical field of automobile driving control, in particular to a car lamp system.

Background

Along with the development of control technology and chip technology, the special effect of the automobile luminous unit gradually becomes a design bright point of the whole automobile. The vehicle headlights may be functionally divided into high beam lights, low beam lights, daytime running lights, position lights, and turn signals. The tail lamp includes position lamp, brake lamp, turn signal lamp, back-up lamp. In order to realize the overall unified special effect of the light, the lamps of all functional areas of the whole vehicle are required to be independently controlled.

Meanwhile, the whole automobile domain control integration is an industry trend, the control function of The actuator is integrated into The whole automobile domain control, the function is iterated rapidly through The whole automobile Over The Air (OTA) technology, the function conflict caused by independent upgrading of each controller can be avoided, and The hardware cost of The controller can be saved.

The light-emitting unit driving chip can be functionally divided into a communication module, a logic control module and a power driving module, and along with popularization of advanced technology of the chip, high-power driving chip products which are simultaneously integrated with the 3 functional modules on the same wafer begin to appear in the market. This makes it possible for the integration of the light-emitting unit driving module and the whole vehicle domain control integration, such as the mature self-adaptive high beam system lamp in the market is composed of two parts: the control module is responsible for logic control and power supply, and the lamp panel module is responsible for driving the lighting of each LED lighting unit.

In the system proposal, the luminous unit supplier realizes the overall control of the LED luminous unit, but is difficult to meet the requirement of the unified control of the whole vehicle, the control module mainly comprises a microcontroller, a transceiver and a direct current converter, the two-stage logic control is carried out by the microcontroller and the whole vehicle domain controller, the hardware architecture is complex, the updating iteration is complex, and the microcontroller and the whole vehicle domain controller are updated, thereby being unfavorable for the unified control of the whole vehicle.

The first prior art (CN 115843137) proposes a technical solution, which describes a technical solution similar to the above-mentioned idea, but the technical solution is not applicable in practical applications. At first MCU integration can lead to the unable multiplexing of MCU between a plurality of functions in the lamp plate, and the working property of MCU is challenged to the heat dissipation of a large amount of lamp plates.

The second prior art (CN 206520536) also proposes a technical solution, which is currently the mainstream technical solution of the light-emitting unit provider, but cannot meet the requirements of the whole vehicle control.

Therefore, the control requirements of the whole vehicle domain control architecture cannot be met by the vehicle lamp system in the prior art.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention provides a vehicle lamp system to solve the above-mentioned technical problems.

In order to achieve the above object and other related objects, the present invention provides the following technical solutions.

A vehicle lamp system, comprising:

The whole vehicle domain controller generates an enabling signal and a matrix control signal;

The lamp panel module comprises a circuit board, a direct current converter, a data transceiver, a matrix controller and a car lamp matrix, wherein the direct current converter, the data transceiver and the matrix controller are respectively arranged on the circuit board, the direct current converter receives an enabling signal and an initial power supply, and performs direct current-direct current conversion on the initial power supply under the enabling control of the enabling signal to obtain a power supply for driving and lighting the car lamp matrix, and the matrix control signal is transmitted to the matrix controller through the data transceiver so as to perform independent switch control on each luminous unit in the car lamp matrix.

Optionally, the dc converter is communicatively connected to the whole-vehicle-domain controller to receive the enable signal.

Optionally, the direct current converter is electrically connected with the whole-vehicle-domain controller, and the initial power supply is provided through the whole-vehicle-domain controller; or the direct current converter is electrically connected with a whole vehicle power supply, and the initial power supply is provided through the whole vehicle power supply.

Optionally, the dc converter performs boost conversion on the initial power supply, so that the power supply is larger than the initial power supply, so as to drive and light up a plurality of light emitting units sequentially connected in series in the vehicle lamp matrix.

Optionally, the dc converter includes a dc conversion chip and a dc conversion peripheral circuit, where the dc conversion chip receives the enable signal and the initial power supply, the enable signal performs enable control on the dc conversion chip, the initial power supply supplies power to the dc conversion chip and outputs a first switch control signal and a second switch control signal after enabling start, and the dc conversion peripheral circuit receives the initial power supply, the first switch control signal and the second switch control signal, performs boost conversion on the initial power supply under control of the first switch control signal and the second switch control signal, and obtains and outputs the power supply.

Optionally, the direct current conversion chip has a fault diagnosis function, and feeds back a direct current conversion diagnosis signal to the whole vehicle domain controller.

Optionally, the dc conversion chip includes an N-channel dc conversion chip, where the N-channel dc conversion chip cooperates with the dc conversion peripheral circuit to perform boost conversion on the initial power supply to obtain N paths of power supply power, where N is an integer greater than or equal to 1.

Optionally, the data transceiver includes a data transceiver chip and a data transceiver peripheral circuit, a power supply of the data transceiver chip is connected with a working power supply, a ground of the data transceiver chip is grounded, a communication end of the data transceiver chip is connected with the whole vehicle domain controller in a communication manner after passing through the data transceiver peripheral circuit, and another communication end of the data transceiver chip is connected with the matrix controller in a communication manner.

Optionally, the lamp panel module further includes a low dropout linear voltage regulator, the low dropout linear voltage regulator is disposed on the circuit board, and the low dropout linear voltage regulator receives the initial power supply and performs buck conversion on the initial power supply to obtain the working power supply.

Optionally, the car light matrix includes N light emitting unit series connection structures, each light emitting unit series connection structure includes a plurality of light emitting units that establish ties in proper order, and the power supply of N way is N light emitting unit series connection structure one-to-one power supply.

Optionally, the matrix controller includes N matrix control chips and a matrix control peripheral circuit, the input power ends of the N matrix control chips are connected with the N power supplies in a one-to-one correspondence, the ground ends of the N matrix control chips are respectively grounded, the 1st serial communication end of the matrix control chip is connected with the data transceiver chip, the i-1 th serial communication end of the matrix control chip is connected with the i-th serial communication end of the matrix control chip, and the N matrix control chips are connected with the N light-emitting unit serial structures in a one-to-one correspondence, where i is an integer from 1 to N.

Optionally, the matrix control chip includes a plurality of control switches, and each light emitting unit in each light emitting unit serial structure is arranged in parallel with a plurality of control switches in each matrix control chip in a one-to-one correspondence manner.

Optionally, the matrix control chip has a fault detection function, and the matrix control chip diagnoses the state of each light emitting unit in real time and feeds back a light emitting unit diagnosis signal to the whole vehicle domain controller through the data transceiver.

The invention has the beneficial effects that: the vehicle lamp system is designed by combining the whole vehicle domain controller and the lamp panel module, the lamp panel module comprises a circuit board, a direct current converter, a data transceiver, a matrix controller and a vehicle lamp matrix, the direct current converter, the data transceiver and the matrix controller are all arranged on the circuit board close to the vehicle lamp matrix, compared with the prior art, the power supply conversion and the data transceiver are all arranged at an execution end, a microcontroller at the next stage is canceled, all logic control is completed by the whole vehicle domain controller, the logic control architecture of the vehicle lamp system is simplified, hardware consumption is reduced, cost and power consumption are reduced, meanwhile, the logic control of the vehicle lamp system is integrated into the whole vehicle domain controller, the control requirement under the condition of integrating the whole vehicle domain control is met, the upgrading iteration of the corresponding logic control module is more convenient, and the management efficiency is higher.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:

FIG. 1 is a block diagram of a prior art lamp system;

FIG. 2 is a block diagram of a lamp system according to the present application;

Fig. 3 is a circuit diagram of a dc converter according to an exemplary embodiment of the present application;

FIG. 4 is a circuit diagram of a data transceiver shown in an exemplary embodiment of the present application;

FIG. 5 is a circuit diagram of a low dropout linear regulator according to an exemplary embodiment of the present application;

Fig. 6 is a circuit diagram of a matrix controller according to an exemplary embodiment of the present application.

Detailed Description

Further advantages and effects of the present invention will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

In the following description, numerous details are set forth in order to provide a more thorough explanation of embodiments of the present invention, it will be apparent, however, to one skilled in the art that embodiments of the present invention may be practiced without these specific details, in other embodiments, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring the embodiments of the present invention.

As described in the foregoing background art, the inventor researches and finds that, as shown in fig. 1, a mature adaptive high beam system lamp in the prior art is composed of a control module and a lamp panel module, the control module is responsible for logic control and power supply, the control module includes a first circuit board, a microcontroller, two transceivers and a dc converter, the microcontroller, the two transceivers and the dc converter are respectively disposed on the first circuit board, the lamp panel module is responsible for driving the lighting of each LED lighting unit, the lamp panel module includes a second circuit board, a matrix controller and a lamp matrix, and the matrix controller is disposed on the second circuit board.

In detail, the working principle of the lamp system shown in fig. 1 is as follows: the whole-vehicle-domain controller sends a control signal Vc to a microcontroller of a control module through a CAN bus (namely a transceiver 1), the microcontroller sends a control signal for each LED light-emitting unit to a matrix controller on a lamp panel module through a UART-CAN (namely a transceiver 2), and then the matrix controller controls each LED light-emitting unit; on the other hand, the whole vehicle power supply (such as a small storage battery) supplies power to the direct current converter on the control module, an initial power supply VBAT is provided, the microcontroller on the control module controls the direct current converter, and after the direct current converter converts the initial power supply VBAT (such as 12V) into a power supply voltage HB (such as 20-40V), the power supply HB is supplied to each LED light-emitting unit in the vehicle lamp matrix.

The direct current converter and the matrix controller respectively have fault diagnosis functions, perform fault detection in real time and feed back a fault signal Vf to the whole-vehicle-domain controller through the microcontroller.

The system scheme realizes the overall control of the LED car lamp, but is difficult to meet the requirement of the unified control of the whole car, and the control module mainly comprises a microcontroller, a transceiver and a direct current converter, and performs two-stage logic control through the microcontroller and the whole car domain controller, so that the hardware architecture is complex, the cost and the power consumption of the architecture are high, the updating iteration is complex, and the microcontroller and the whole car domain controller need to be synchronously updated, thereby being unfavorable for the unified control of the whole car domain controller.

Based on the above, the application provides a technical scheme of a light emitting unit: the vehicle lamp system is designed by combining the whole vehicle domain controller and the lamp panel module, a microcontroller for controlling the vehicle lamp is canceled, the logic control of the vehicle lamp system is integrated into the whole vehicle domain controller, other parts such as a direct current converter, a data transceiver and the like are integrally arranged on the lamp panel module, so that the architecture of the vehicle lamp system is simplified, the three-stage architecture is simplified into a two-stage architecture, and particularly, the logic control architecture of the vehicle lamp system is simplified, so that the hardware consumption is reduced, the volume of the vehicle lamp system is reduced, the cost and the power consumption of the vehicle lamp system are reduced, the control requirement for integrating the whole vehicle domain control is met, the upgrading iteration of the logic control of the vehicle lamp system is facilitated, and the management efficiency of the whole vehicle is improved.

Embodiments of the present application provide a lamp system and a vehicle, respectively, and these embodiments will be described in detail below.

As shown in fig. 2, in an exemplary embodiment of the present application, there is provided a lamp system including:

The whole vehicle domain controller generates an enabling signal Ve and a matrix control signal Vc;

The lamp panel module comprises a circuit board, a direct current converter, a data transceiver, a matrix controller and a car lamp matrix, wherein the direct current converter, the data transceiver and the matrix controller are respectively arranged on the circuit board, the direct current converter receives an enabling signal Ve and an initial power supply VBAT, and under the enabling control of the enabling signal Ve, the initial power supply VBAT is subjected to direct current-direct current conversion to obtain a power supply HB for driving the car lamp matrix to be lightened, and a matrix control signal Vc is transmitted to the matrix controller through the data transceiver so as to independently switch and control each luminous unit in the car lamp matrix.

In detail, as shown in fig. 2, the dc converter is communicatively connected to the whole-vehicle-domain controller to receive the enable signal Ve or to feed back the dc conversion diagnostic signal Vf1.

In detail, as shown in fig. 2, the dc converter is electrically connected to the whole vehicle power supply, and the initial power supply VBAT is provided by the whole vehicle power supply. It will be appreciated that in alternative embodiments of the invention, the dc converter may also be electrically connected to the whole-vehicle-domain controller, through which the initial power supply VBAT is provided.

It should be noted that, the main source of the initial power supply VBAT is also the whole vehicle power supply (such as a battery), and the initial power supply VBAT of 12V and 24V is provided through the whole vehicle power supply.

In the invention, as the initial power supply VBAT provided by the whole vehicle power supply is lower, the number of the light emitting units in the vehicle lamp matrix is more, the corresponding driving voltage requirement is larger, and the direct current converter carries out boost conversion on the initial power supply VBAT, so that the power supply HB of the converted output is larger than the initial power supply VBAT, a plurality of light emitting units which are sequentially connected in series in the vehicle lamp matrix are driven and lightened, and the power supply HB can drive as many light emitting units as possible at one time. If the initial power supply VBAT of the 12V power supply is used, the power supply HB of about 36V (specifically, according to the number of the light emitting units in the car light matrix) and 1A is used for supplying power to the light emitting units in the car light matrix to be lighted.

In an alternative embodiment of the present invention, as shown in fig. 3, the dc converter includes a dc conversion chip U1 and a dc conversion peripheral circuit, the dc conversion chip U1 receives an enable signal Ve and an initial power supply VBAT, the enable signal Ve enables the dc conversion chip U1, the initial power supply VBAT supplies power to the dc conversion chip U1 and outputs a first switch control signal VP1 and a second switch control signal VP2 after enabling and starts, and the dc conversion peripheral circuit receives the initial power supply VBAT, the first switch control signal VP1 and the second switch control signal VP2, and performs boost conversion on the initial power supply VBAT under the control of the first switch control signal VP1 and the second switch control signal VP2 to obtain and output a power supply HB.

The direct current converter or the direct current conversion chip U1 receives control of the enabling signal Ve, and is turned on or turned off, so that the light emitting units in the car light matrix are turned on and turned off.

In detail, as shown in fig. 3, the power input of the dc conversion chip U1 is connected to the initial power VBAT, the enabling end of the dc conversion chip U1 is connected to the enabling signal Ve, the ground of the dc conversion chip U1 is connected to the ground GND, the initial power VBAT supplies power to the dc conversion chip U1, after the enabling signal Ve is enabled, the dc conversion chip U1 starts to work and outputs the first switch control signal VP1 and the second switch control signal VP2, so as to control the boost conversion circuit formed by the later inductor L1, the NMOS transistor Q1, the diode D1, the resistor R29 and the PMOS transistor Q3, the inductor L1 is charged and stored by the initial power VBAT through complementary alternate turn-on and turn-off of the NMOS transistor Q1 and the PMOS transistor Q3, and then the stored energy of the initial power VBAT and the stored energy of the inductor L1 are output in a superposition manner, so as to obtain the power supply HB.

In more detail, as shown in fig. 3, on the basis of a single dc conversion chip, the dc conversion chip U1 may be a dual-channel dc conversion chip, where the dual-channel dc conversion chip is matched with a dc conversion peripheral circuit, and one channel outputs a first switch control signal VP1 and a second switch control signal VP2 to control a boost conversion circuit formed by a post-stage inductor L1, an NMOS transistor Q1, a diode D1, a resistor R29 and a PMOS transistor Q3, so as to perform boost conversion on an initial power supply VBAT, thereby obtaining a power supply HB; the other channel outputs a first switch control signal VP1 and a second switch control signal VP2 to control a boost conversion circuit formed by a post-stage inductor L2, an NMOS tube Q2, a diode D2, a resistor R45 and a PMOS tube Q4, and the boost conversion circuit is used for performing boost conversion on an initial power supply VBAT to obtain a power supply HB2.

It can be understood that the dc conversion chip U1 is not limited to the dual-channel dc conversion chip shown in fig. 3, and the dc conversion chip U1 may further include a plurality of multi-channel dc conversion chips such as 3 channels and 4 channels, and the multi-channel dc conversion chip cooperates with a dc conversion peripheral circuit to perform boost conversion on the initial power VBAT to obtain multiple power supplies, and power is supplied to more light emitting units through the multiple power supplies.

Meanwhile, it should be noted that, in addition to the two boost conversion circuits, the dc conversion peripheral circuit further includes a filter circuit, a current limiting circuit, and other circuit structures that are formed by resistors and capacitors, and details can be seen in fig. 3, which is not repeated here.

In detail, as shown in fig. 2 to 3, the dc conversion chip U1 has a fault diagnosis function and feeds back a dc conversion diagnosis signal Vf1 to the whole-vehicle-domain controller. As shown in fig. 3, the dc conversion diagnostic signal Vf1 includes a first dc conversion diagnostic signal flag 1 and a second dc conversion diagnostic signal flag 2, and the states of the two channels are diagnosed.

In the invention, the DC conversion chip U1 can adopt TPS92682-Q1 or other similar DC conversion chips, and TPS92682-Q1 is a dual-channel peak current mode controller with SPI communication interface. The device is programmable to operate in either a Constant Voltage (CV) or Constant Current (CC) mode.

In CV mode, TPS92682-Q1 can be programmed as two independent or dual phase boost regulators. The output voltage may be programmed using an external resistor divider and an SPI programmable 8-bit DAC. In CC mode (i.e., the mode used in the present invention), the device is intended to support a dual channel boost or buck LED driver topology. The LED current may be independently modulated using analog or PWM dimming techniques. Analog dimming over a 28:1 range is achieved using a programmable 8-bit DAC. PWM dimming of LED current can be achieved by directly modulating the PWM input pin with the desired duty cycle or using an SPI programmable 10 bit PWM counter.

In detail, as shown in fig. 3, an interface for connecting the first PWM signal PWM1 and the second PWM signal PWM2 is reserved on the dc conversion chip U1, and is flexibly selected according to actual use requirements.

Meanwhile, TPS92682-Q1 adopts advanced SPI programmable diagnosis and fault protection mechanism, including: cycle-by-cycle current limiting, output overvoltage and undervoltage protection, ILED over-current protection, and thermal warning. The device also includes an open drain fault indicator output for each channel.

In an alternative embodiment of the present invention, as shown in fig. 4, the data transceiver includes a data transceiver chip U2 and a data transceiver peripheral circuit, where a power supply of the data transceiver chip U2 is connected to the working power VCC, a ground of the data transceiver chip U2 is connected to the ground GND, a communication end of the data transceiver chip U2 is connected to the whole vehicle domain controller through the data transceiver peripheral circuit, and another communication end of the data transceiver chip is connected to the matrix controller.

In detail, as shown in fig. 4, the data transceiver peripheral circuit includes capacitors C10 to C13, resistors R100 to R101, and a coupling inductance L3, and the data transceiver peripheral circuit cooperates with the data transceiver chip U2 to enable the data transceiver chip U2 to perform normal transceiver operation. The data transceiver chip U2 is a CAN transceiver chip, one end of the data transceiver chip is in communication connection with the whole vehicle domain controller through CAN buses UART_CANH and UART_CANL, and the other end of the data transceiver chip is in communication connection with the matrix controller through CAN buses int_UART_CANH and int_UART_CANL.

The model of the data transceiver chip U2 may be flexibly selected, for example, may be a TJA1441 chip, where TJA1441 is a member of a TJA144x transceiver family, and the transceiver provides an interface between a Controller Area Network (CAN) or a CAN FD (flexible data rate) protocol controller and a physical two-wire CAN bus. The TJA144x transceiver implements the CAN physical layer defined in ISO 11898-2:2016 and SAE J2284-1 through SAE J2284-5 and is fully interoperable with high speed classical CAN and CAN FD transceivers. All TJA144x variants enable reliable communication at data rates up to 5Mbit/s in the CAN FD fast phase.

In an alternative embodiment of the present invention, as shown in fig. 5, the lamp panel module further includes a low dropout linear regulator, which is disposed on the circuit board, and the low dropout linear regulator receives the initial power supply VBAT and performs buck conversion on the initial power supply VBAT to obtain a lower (e.g., +5v) operating power supply VCC.

In detail, as shown in fig. 5, the low dropout linear voltage regulator includes a low dropout linear voltage regulator chip U3 and a low dropout linear voltage regulator peripheral circuit, the ground terminal GND of the low dropout linear voltage regulator chip U3, the input terminal VBAT of the low dropout linear voltage regulator chip U3, the output terminal of the low dropout linear voltage regulator chip U3 outputs a working power supply VCC, the low dropout linear voltage regulator peripheral circuit includes capacitors C1 to C6, the capacitors C1 to C2 filter the input, and the capacitors C3 to C6 filter the output. The low dropout linear voltage regulator chip U3 can adopt TLE42644, wherein TLE42644 is a monolithic integrated low dropout linear voltage regulator, and the load current is up to 100mA.

In an alternative embodiment of the present invention, as shown in fig. 6, the vehicle lamp matrix includes 2 light emitting unit serial structures, each light emitting unit serial structure includes a plurality of light emitting units (such as light emitting diodes LEDs) connected in series in sequence, 2 power supplies are provided for one-to-one correspondence of 2 (i.e. power supply HB and power supply HB 2) light emitting unit serial structures, one end of the light emitting unit serial structure is connected to a positive power supply hb+ of the power supply HB, and the other end of the light emitting unit serial structure is grounded GND to form a power supply loop, so as to drive and light the light emitting unit serial structure.

In detail, as shown in fig. 6, the matrix controller includes matrix control chips U4 to U5 and a matrix control peripheral circuit, input power terminals of the matrix control chips U4 to U5 are connected in one-to-one correspondence with 2 power supplies, ground terminals of the matrix control chips U4 to U5 are respectively grounded GND, a first serial communication terminal of the matrix control chip U4 is connected with the data transceiver chip, a second serial communication terminal of the matrix control chip U4 is connected with the first serial communication terminal of the matrix control chip U5, and the matrix control chips U4 to U5 are connected in one-to-one correspondence with the serial structures of 2 light emitting units.

Meanwhile, as shown in fig. 6, the matrix control peripheral circuit includes a filter circuit, a current limiting circuit, and other circuit structures composed of resistors and capacitors, and details of the circuit structures can be seen in fig. 6, and details of the circuit structures are not repeated here.

In more detail, as shown in fig. 6, the first serial communication terminal of the matrix control chip U4 is communicatively connected to the matrix controller through CAN buses int_uart_canh and int_uart_canl to transmit a matrix control signal Vc to the matrix control chip U4, and the matrix control signal Vc is further transmitted to the matrix control chip U5 through the serial communication connection between the matrix control chip U4 and the matrix control chip U5.

In detail, as shown in fig. 6, the matrix control chips U4 to U5 include a plurality of control switches (not shown in the drawing), and each light emitting unit in the light emitting unit serial structure is arranged in parallel in one-to-one correspondence with the plurality of control switches in the matrix control chips U4 to U5.

In more detail, as shown in fig. 6, each control switch in the matrix control chip U4 or the matrix control chip U5 is independently switch-controlled under the control of the matrix control signal Vc, the corresponding light emitting unit is short-circuited to be turned off when the control switch is turned on, and the corresponding light emitting unit is normally turned on to be turned on when the control switch is turned off, that is, the matrix control chips U4 to U5 realize independent on and off control of each light emitting unit of the light emitting unit series structure by the bypass control assistance.

In detail, as shown in fig. 6, the matrix control chips U4 to U5 have a fault detection function, and the matrix control chips U4 to U5 diagnose the states of the respective light emitting units in real time and feed back a light emitting unit diagnosis signal Vf2 to the whole-vehicle-domain controller through the data transceiver.

It should be noted that, the matrix control chip in the invention selects a chip type without an external EEPROM, and only needs to be programmed and controlled by the whole vehicle domain controller through the UART-CAN bus, and does not need to depend on a microcontroller on a control module, and the matrix control chip in the invention CAN flexibly select design, for example, a iND83080 chip of Endi core micro company CAN be adopted, and similar chips of other enterprises CAN also be adopted.

It can be understood that the light matrix is not limited to the 2 light emitting unit serial structures shown in fig. 6, but can also be other numbers of light emitting unit serial structures including 1, 3, 4 and the like, and each light emitting unit serial structure is correspondingly provided with one power supply; correspondingly, the matrix controller comprises 1, 3, 4 and other matrix control chips, which are marked as N matrix control chips, the input power ends of the N matrix control chips are connected with N power supplies in one-to-one correspondence, the ground ends of the N matrix control chips are respectively grounded, the first serial communication end of the 1 st matrix control chip is connected with the data transceiver chip, the second serial communication end of the i-1 th matrix control chip is connected with the first serial communication end of the i-th matrix control chip, and the N matrix control chips are connected with N luminous unit serial structures in one-to-one correspondence, wherein i is an integer of 1-N. Details can be analyzed by referring to the case where N is 2, and will not be described herein.

Therefore, the invention combines the whole vehicle domain controller and the lamp panel module to design the vehicle lamp system, cancels the microcontroller for controlling the vehicle lamp, integrates the logic control of the vehicle lamp system into the whole vehicle domain controller, integrates other parts such as the direct current converter, the data transceiver and the like on the lamp panel module, effectively simplifies the architecture of the vehicle lamp system, simplifies the three-stage architecture into the two-stage architecture, particularly simplifies the logic control architecture of the vehicle lamp system, saves the microcontroller, the data transceiver and a circuit board compared with the prior art, reduces the hardware consumption of the vehicle lamp system, reduces the volume of the vehicle lamp system, reduces the cost and the power consumption of the vehicle lamp system, simultaneously meets the control requirement for integrating the whole vehicle domain control, facilitates the upgrading iteration of the logic control of the vehicle lamp system, and improves the management efficiency of the whole vehicle.

Based on the above-mentioned car light system, in another exemplary embodiment of the present application, a vehicle is provided, which includes the above-mentioned car light system, based on the two-stage structural design of the "whole car domain controller+lamp panel module" of the above-mentioned car light system, the hardware consumption of the vehicle is reduced, the vehicle space is saved, the cost and power consumption of the vehicle are reduced, and meanwhile, the control requirement of the whole car domain control is met, the upgrading iteration of the vehicle is facilitated, and the management efficiency of the whole car is improved.

The above embodiments are merely illustrative of the principles of the present application and its effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all equivalent modifications and variations of the application be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure. It is emphasized that the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems according to various embodiments of the present application.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. It is therefore intended that all equivalent modifications and changes made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the appended claims.

Claims

1. A vehicle lamp system, comprising:

2. The vehicle lamp system of claim 1, wherein the dc converter is communicatively coupled to the whole-vehicle-area controller to receive the enable signal.

3. The vehicle lamp system according to claim 2, wherein the dc converter is electrically connected to the whole-vehicle-area controller, through which the initial power supply is provided; or the direct current converter is electrically connected with a whole vehicle power supply, and the initial power supply is provided through the whole vehicle power supply.

4. The vehicle lamp system according to claim 1, wherein the dc converter performs boost conversion on the initial power supply such that the power supply is larger than the initial power supply to drive and illuminate a plurality of light emitting units connected in series in the vehicle lamp matrix.

5. The vehicle lamp system according to claim 4, wherein the dc converter includes a dc conversion chip and a dc conversion peripheral circuit, the dc conversion chip receives the enable signal and the initial power supply, the enable signal performs enable control on the dc conversion chip, the initial power supply supplies power to the dc conversion chip and outputs a first switch control signal and a second switch control signal after enabling start, and the dc conversion peripheral circuit receives the initial power supply, the first switch control signal and the second switch control signal, performs boost conversion on the initial power supply under control of the first switch control signal and the second switch control signal, and obtains and outputs the power supply.

6. The vehicle lamp system according to claim 5, wherein the dc conversion chip has a fault diagnosis function and feeds back a dc conversion diagnosis signal to the whole vehicle domain controller.

7. The vehicle lamp system according to claim 5, wherein the dc conversion chip comprises an N-channel dc conversion chip, and the N-channel dc conversion chip is configured to boost-convert the initial power supply to obtain N paths of the power supply, where N is an integer greater than or equal to 1, in cooperation with the dc conversion peripheral circuit.

8. The vehicle lamp system according to claim 1, wherein the data transceiver comprises a data transceiver chip and a data transceiver peripheral circuit, a power supply of the data transceiver chip is connected with a working power supply, a ground of the data transceiver chip is grounded, a communication end of the data transceiver chip is connected with the whole vehicle domain controller in a communication manner after passing through the data transceiver peripheral circuit, and the other communication end of the data transceiver chip is connected with the matrix controller in a communication manner.

9. The vehicle lamp system of claim 8, wherein the lamp panel module further comprises a low dropout linear regulator disposed on the circuit board, the low dropout linear regulator receiving the initial power supply and performing a buck conversion on the initial power supply to obtain the operating power supply.

10. The vehicle lamp system of claim 9, wherein the vehicle lamp matrix comprises N series arrangements of light emitting units, each series arrangement of light emitting units comprising a plurality of light emitting units connected in series in sequence, the N power supplies supplying power to the N series arrangements of light emitting units in a one-to-one correspondence.

11. The vehicle lamp system according to claim 10, wherein the matrix controller comprises N matrix control chips and a matrix control peripheral circuit, the input power terminals of the N matrix control chips are connected in one-to-one correspondence with the N power supplies, the ground terminals of the N matrix control chips are respectively grounded, the first serial communication terminal of the 1 st matrix control chip is connected with the data transceiver chip, the second serial communication terminal of the i-1 st matrix control chip is connected with the first serial communication terminal of the i-th matrix control chip, and the N matrix control chips are connected in one-to-one correspondence with the N serial structures of the light emitting units, wherein i is an integer of 1 to N.

12. The vehicle lamp system according to claim 11, wherein the matrix control chip includes a plurality of control switches, and each of the light emitting units in each of the light emitting unit series structures is arranged in parallel with the plurality of control switches in each of the matrix control chips in one-to-one correspondence.

13. The vehicle lamp system according to claim 12, wherein the matrix control chip has a fault detection function, and the matrix control chip diagnoses the status of each light emitting unit in real time and feeds back a light emitting unit diagnosis signal to the whole vehicle domain controller through the data transceiver of claim.