Platform-based automobile tail light control device

Abstract

The utility model provides a platform-based automobile tail lamp control device, and relates to the technical field of automobile tail lamp control. An SBC module, an MCU module and a driving module are integrated in the control device; the SBC module is bidirectionally and electrically connected with the vehicle body; the first output end of the SBC module is electrically connected with the first input end of the MCU module; the MCU module is electrically connected with the driving module; the driving module is externally connected with a lamp and is used for providing constant-current and constant-voltage output for the lamp to control an LED lamp in the lamp to be lightened; the driving module comprises a CV module and a CC module, a CVBOOST module and a CVBUCK module are integrated in the CV module, and a CCBOOST module and a CCBUCK module are integrated in the CC module; the CVBOOST module is used for boosting the voltage of the CV module, and the CVBUCK module is used for reducing the voltage of the CV module; the CCBOOST module is used for boosting the CC module, and the CCBUCK module is used for reducing the voltage of the CC module. A multifunctional platform design scheme is adopted in the automobile tail light control device, the functions of multiple automobile types of a main engine plant can be met, and hardware platform component cost reduction and design cost reduction can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile tail light control, especially relates to a platformized automobile tail light control device. BACKGROUND

[0002] The existing automobile tail light controller is generally configured according to the requirements of the host factory, and the architecture and function of the controller are designed. The existing automobile controller is generally designed according to the requirements of the host factory, and the function is matched with the automobile lamps, which lacks a certain flexibility and cannot meet the functional requirements of other vehicle lamp models of the host factory at the same time, which is relatively limited. Moreover, the CV module of the existing power drive module adopts a step-down mode for constant voltage CV output. Due to the limitation of the input voltage range of the vehicle body power supply, the voltage of the constant voltage output channel can only drive a small number of LED lamps, which has certain limitations. Taking an input voltage of 13.5V as an example, if the CV1 channel outputs 10V after step-down by the CV module, a minimum voltage of 3V is required to drive a single LED to normally light up. Under the condition of ensuring the function of the lamp, the CV1 channel only supports 2 LEDs to normally light up. Therefore, the existing drive module has a limited number of LEDs that can be driven. In order to increase the number of LEDs driven by the drive module, the prior art adopts a step-up and step-down mode for constant voltage CV output in the CV module of the power drive module, but this mode generally uses BUCK_BOOST chips and topological structures, which have high chip costs and relatively low CV module output efficiency. Similarly, when a step-up and step-down mode is used for constant current CC output in the CC module of the power drive module, BUCK_BOOST chips and topological structures are generally used, which have high chip costs and relatively low CC module output efficiency. This further increases the production cost.

[0003] The above problems need to be solved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a platformized automobile tail light control device, which aims to solve the problems of functional limitations and high production cost of the automobile tail light controller in the prior art.

[0005] The utility model discloses a kind of platformized automobile tail light control devices, SBC module, MCU module and drive module are integrated in the control device;The SBC module is electrically connected with vehicle body bidirectionally, for realizing vehicle level hibernation wake-up;The SBC module first output end is electrically connected with the MCU module first input end, for providing operating voltage for the MCU module;The MCU module first output end is electrically connected with the drive module first input end, for controlling the drive module work;The drive module is externally connected lamp, for providing constant current constant voltage output control LED light in the lamp for the lamp;The drive module includes CV module and CC module, CV_BOOST module and CV_BUCK module are integrated in the CV module, CC_BOOST module and CC_BUCK module are integrated in the CC module;The CV_BOOST module input end is electrically connected with vehicle body power supply, output end is electrically connected with the CV_BUCK module input end, the CV_BUCK module output end is electrically connected with the lamp, the CV_BOOST module is used to realize the boost of CV module, the CV_BUCK module is used to realize the buck of CV module, and voltage after bucking is input to externally connected lamp, and the constant voltage output of drive module is realized;The CC_BOOST module input end is electrically connected with vehicle body power supply, output end is electrically connected with the CC_BUCK module input end, the CC_BUCK module output end is electrically connected with the lamp, the CC_BOOST module is used to realize the boost of CC module, the CC_BUCK module is used to realize the buck of CC module, and current after bucking is input to externally connected lamp, and the constant current output of drive module is realized.

[0006] Further, the control device also integrates an anti-reverse circuit, the anti-reverse circuit input end is electrically connected with the vehicle body, the anti-reverse circuit is composed of a charge pump and an NMOS tube, for preventing circuit damage caused by vehicle body power supply reverse connection.

[0007] Further, the control device also integrates a filter module, the filter module input end is electrically connected with the anti-reverse circuit output end, the filter module output end is electrically connected with the SBC module input end, for removing unnecessary harmonics in vehicle body power supply.

[0008] Further, the control device also integrates an LDO module, the LDO module input end is electrically connected with the filter module output end, the LDO module output end is electrically connected with the lamp, for inputting power supply voltage after voltage stabilization to the lamp to power the lamp.

[0009] Further, the filter module integrates a π-type filter.

[0010] Further, the control device is also integrated with an ADC module, a first input end of the ADC module is electrically connected with a second output end of the SBC module, and the SBC module is used for providing working voltage for the ADC module; a second input end of the ADC module is electrically connected with the lamp, and an output end of the ADC module is electrically connected with a second input end of the MCU module, and the ADC module is used for sampling voltage of the external lamp and converting the sampled analog voltage signal into a digital signal input into the MCU module.

[0011] Further, the control device is also integrated with a CAN communication module, a first input end of the CAN communication module is electrically connected with the SBC module, the SBC module is used for providing working voltage for the CAN communication module, a first output end of the CAN communication module is electrically connected with the external lamp, and the CAN communication module is bidirectionally electrically connected with the MCU module, and the CAN communication module is used for enabling the MCU module to communicate with the external lamp.

[0012] Further, the control device is also integrated with a high-side switch module, an input end of the high-side switch module is electrically connected with the vehicle body, and an output end of the high-side switch module is electrically connected with the external lamp, and the high-side switch module is used for outputting channel current to the lamp and controlling opening and closing of the lamp.

[0013] Further, the CV module comprises a CV_BOOST module and at least two CV_BUCK modules; and the CC module comprises a CC_BOOST module and at least two CC_BUCK modules.

[0014] Further, the MCU module is integrated with a control chip, the control chip is of an S32K146 type, and the MCU module realizes configuration management of different vehicle models and logic processing of different lightings of software by downloading a parameter configuration table.

[0015] The technical scheme provided by the embodiment of the utility model has the beneficial effects that:

[0016] (1) The CV_BOOST module and the CV_BUCK module are applied in the CV module to reduce cost, improve efficiency, and improve the function of increasing the number of LED of the driving lamp.

[0017] (2) The CC_BOOST module and the CC_BUCK module are applied in the CC module to reduce cost and improve efficiency.

[0018] (3) The automobile tail lamp control device adopts a multifunctional platform design scheme, which can meet the functions of multiple vehicle models of the host factory and realize cost reduction of hardware platform components and design cost reduction. DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0020] Figure 1 It is a platformized automobile tail lamp control device structure schematic diagram provided by the embodiment of the present application.

[0021] Figure 2 It is a circuit topology diagram of the CV_BOOST module and the CC_BOOST module provided by the embodiment of the present application.

[0022] Figure 3 It is a CV_BUCK module circuit topology diagram provided by the embodiment of the present application.

[0023] Figure 4 It is a CC_BUCK module circuit topology diagram provided by the embodiment of the present application.

[0024] Figure 5 It is a schematic diagram of the CV channel output to the LED in the mode of first boosting and then reducing provided by the embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application in combination with the drawings.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present application, for example, the terms "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "upper end", "lower end", "middle" and the like indicate the orientation or position based on the orientation or position shown in the drawings, and are only for the purpose of description, and cannot be understood as the limitation of the technical solutions.

[0027] The terms "comprise", "comprising", "include", "including", "have", "having" and any variations thereof in the Specification and in the Claims of the present application and in the above description of the drawings are intended to cover a non-exclusive inclusion; the terms "first", "second" and the like in the Specification and in the Claims of the present application or in the above description of the drawings are intended to cover different objects unless otherwise specified; the meaning of "a plurality" is two or more, unless otherwise specified.

[0028] Furthermore, reference being made herein to "embodiments" means that certain features, structures, or characteristics described in connection with an embodiment can be included in at least one embodiment of the present application. The appearances of the phrase that the phrase in the specification in various places does not necessarily all refer to the same embodiment, nor is it necessarily referred to a particular embodiment, in isolation or in combination with other embodiments. It is explicitly and implicitly understood by those skilled in the art that an embodiment described herein can be combined with another embodiment, in any manner.

[0029] For the convenience of subsequent understanding, the professional terms appearing in the following embodiments are explained here:

[0030] SBC: Session Border Controller, system basis chip;

[0031] LDO: Low Dropout Regulator, low dropout regulator;

[0032] CV: Constant Voltage, constant voltage;

[0033] CC: Constant Current, constant current;

[0034] MCU: Micro Controller Unit, microcontroller;

[0035] ADC: Analog-to-Digital Converter, analog-to-digital converter;

[0036] CAN: Controller Area Network, controller area network;

[0037] HSD: High Side Drivers, high side switch drive;

[0038] BUCK: buck voltage, buck;

[0039] BOOST: boost voltage, boost.

[0040] Embodiments

[0041] The specific implementation is as follows:

[0042] As Figure 1 The utility model discloses a platformization's automobile tail light control device structure schematic diagram is provided.

[0043] As an example, the control device is integrated with SBC module 1, MCU module 2 and drive module 3;The SBC module 1 is electrically connected with the vehicle body bidirectionally, for realizing whole vehicle level dormancy wake-up;The first output end of the SBC module 1 is electrically connected with the first input end of the MCU module 2, for providing working voltage for the MCU module 2;The first output end of the MCU module 2 is electrically connected with the first input end of the drive module 3, for controlling the drive module 3 work;The drive module 3 is externally connected with lamps and lanterns, for providing constant current constant voltage output control LED light in the lamps and lanterns and lighting;The drive module 3 includes CV module 300 and CC module 310, the CV_BOOST module 3001 and CV_BUCK module 3002 are integrated in the CV module 300, the CC_BOOST module 3101 and CC_BUCK module 3102 are integrated in the CC module 310;The input end of the CV_BOOST module 3001 is electrically connected with the vehicle body power supply, and the output end is electrically connected with the input end of the CV_BUCK module 3002, the output end of the CV_BUCK module 3002 is electrically connected with the lamps and lanterns, the CV_BOOST module 3001 is used to realize the step-up of CV module 300, and the CV_BUCK module 3002 is used to realize the step-down of CV module 300, and the voltage after step-down is input to the externally connected lamps and lanterns, to realize the constant voltage output of drive module 3;The input end of the CC_BOOST module 3101 is electrically connected with the vehicle body power supply, and the output end is electrically connected with the input end of the CC_BUCK module 3102, the output end of the CC_BUCK module 3102 is electrically connected with the lamps and lanterns, the CC_BOOST module 3101 is used to realize the step-up of CC module 310, and the CC_BUCK module 3102 is used to realize the step-down of CC module 310, and the current after step-down is input to the externally connected lamps and lanterns, to realize the constant current output of drive module 3.

[0044] In some feasible embodiments, the control device is also integrated with anti-reverse circuit 4, and the input end of the anti-reverse circuit 4 is electrically connected with the vehicle body, the anti-reverse circuit 4 is composed of charge pump and NMOS tube, for preventing circuit damage caused by vehicle body power supply reverse connection.

[0045] In some feasible embodiments, the control device is also integrated with filter module 5, and the input end of the filter module 5 is electrically connected with the output end of the anti-reverse circuit 4, and the output end of the filter module 5 is electrically connected with the input end of the SBC module 1, for removing unnecessary harmonics in the vehicle body power supply.

[0046] In some possible implementation manners, the control device further integrates an LDO module 6, an input end of the LDO module 6 is electrically connected with an output end of the filter module 5, and an output end of the LDO module 6 is electrically connected with the lamp, so as to input the stabilized power supply voltage into the lamp to supply power for the lamp.

[0047] In some possible implementation manners, the filter module integrates a pi filter.

[0048] In some possible implementation manners, the control device further integrates an ADC module 7, a first input end of the ADC module 7 is electrically connected with a second output end of the SBC module 1, the SBC module 1 is configured to provide working voltage for the ADC module 7, a second input end of the ADC module 7 is electrically connected with the lamp, and an output end of the ADC module 7 is electrically connected with a second input end of the MCU module 2, so that the ADC module 7 is configured to sample the voltage of the external lamp and convert the sampled analog voltage signal into a digital signal and input the digital signal into the MCU module 2.

[0049] In some possible implementation manners, the control device further integrates a CAN communication module 8, a first input end of the CAN communication module 8 is electrically connected with the SBC module 1, the SBC module 1 is configured to provide working voltage for the CAN communication module 8, a first output end of the CAN communication module 8 is electrically connected with the external lamp, and the CAN communication module 8 is bidirectionally electrically connected with the MCU module 2, so that the CAN communication module 8 is configured to enable the MCU module 2 to communicate with the external lamp.

[0050] In some possible implementation manners, the SBC module 1 is connected with a vehicle body bus and the MCU module 2, has a watchdog and a diagnosis function, and is configured to supply 5V power to the MCU module 2, the ADC module 7 and the CAN communication module 8, respectively.

[0051] In some possible implementation manners, the control device further integrates a high-side switch module 9, an input end of the high-side switch module 9 is electrically connected with the vehicle body, and an output end of the high-side switch module 9 is electrically connected with the external lamp, so as to output the channel current to the lamp and control the opening and closing of the lamp.

[0052] In some possible implementation manners, the control device further integrates a high-side switch module 9, an input end of the high-side switch module 9 is electrically connected with the vehicle body, and an output end of the high-side switch module 9 is electrically connected with the external lamp, so as to output the channel current to the lamp and control the opening and closing of the lamp. Figures 2-4As shown, the CV module 300 includes a CV_BOOST module 3001 and at least two CV_BUCK modules 3002; the CC module 310 includes a CC_BOOST module 3101 and at least two CC_BUCK modules 3102. Specifically, the CV module 300 adopts the architecture of the CV_BOOST module 3001 and the CV_BUCK module 3002. The first boost and then step-down mode increases the output voltage range of the CV module 300 that can be supported, improves the CV channel driving capability, and can drive more LEDs; the cost of the boost chip and the step-down chip is lower than that of the BUCK_BOOST chip, so on the basis of improving the driving capability, the cost can be further reduced. When the input voltage of the CC_BOOST module 3101 is lower than the minimum input voltage of the step-down chip, the output is boosted and then stepped down to the specified constant voltage channel output voltage; when the input voltage of the CC_BOOST module 3101 is higher than the minimum input voltage of the step-down chip, the boost chip does not work, and is directly output to the CV_BUCK module 3002; therefore, the use of this architecture can improve the working efficiency of the circuit and optimize the circuit design. Similarly, the CC module 310 adopts the architecture of the CC_BOOST module 3101 and the CC_BUCK module 3102. The cost of the boost chip and the step-down chip is lower than that of the BUCK_BOOST chip, which not only can reduce the cost, but also can improve the working efficiency. When the input voltage of the CC_BOOST module 3101 is lower than the minimum input voltage of the step-down chip, the output is boosted and then stepped down to the specified constant voltage channel output voltage; when the input voltage of the CC_BOOST module 3101 is higher than the minimum input voltage of the step-down chip, the boost chip does not work, and is directly output to the CV_BUCK module 3002; therefore, the use of this architecture can improve the working efficiency of the circuit and optimize the circuit design.

[0053] In some possible embodiments, the MCU module 2 is integrated with a control chip, the control chip is of S32K146 type, and the MCU module 2 realizes configuration management of different vehicle models and logic processing of different lightings of software by downloading a parameter configuration table.

[0054] In some possible embodiments, in combination with Figure 5 As shown, it can be seen that one CV channel can control at least four LED lights, which can effectively improve the driving efficiency compared with the prior art.

[0055] In the above embodiments, multiple constant voltage (CV) output channels, multiple constant current (CC) output channels, and multiple high-side output channels can be provided, and the tail lamp control device has UART CAN communication and ADC detection functions. Whether the components of the corresponding modules of the control device are surface-mounted or not can be used to determine whether the modules are retained or removed and to reduce costs. For different vehicle models, the optimal module configuration scheme can be achieved by adjusting the retention or removal of each module of the tail lamp controller to meet the control functions of each vehicle model. The tail lamp control device uses a platformized multifunctional circuit design scheme, which can increase the usage rate of components, thereby reducing the unit cost of components and achieving hardware platformization and cost reduction. The design and development time can also be reduced, and the development cost can also be reduced. The CV_BOOST module and the CV_BUCK module are applied in the CV module to reduce costs, improve efficiency, and increase the number of LED driving lamps. The CC_BOOST module and the CC_BUCK module are applied in the CC module to reduce costs and improve efficiency.

[0056] The above merely describes a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacements or changes within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A platformed automotive taillight control device, characterized by, The control device is integrated with an SBC module, an MCU module and a driving module; The SBC module is bidirectionally electrically connected with the vehicle body, and is used for realizing vehicle level hibernation wake-up; The first output end of the SBC module is electrically connected with the first input end of the MCU module, and is used for providing working voltage for the MCU module; The first output end of the MCU module is electrically connected with the first input end of the driving module, and is used for controlling the working of the driving module; The driving module is externally connected with a lamp, and is used for providing constant current and constant voltage output for the lamp to control the lighting of LED in the lamp; The driving module comprises a CV module and a CC module, the CV module is integrated with a CV_BOOST module and a CV_BUCK module, and the CC module is integrated with a CC_BOOST module and a CC_BUCK module; The input end of the CV_BOOST module is electrically connected with the vehicle body power supply, the output end is electrically connected with the input end of the CV_BUCK module, the output end of the CV_BUCK module is electrically connected with the lamp, the CV_BOOST module is used for realizing the voltage boost of the CV module, the CV_BUCK module is used for realizing the voltage drop of the CV module, and the voltage after voltage drop is input to the externally connected lamp to realize the constant voltage output of the driving module; The input end of the CC_BOOST module is electrically connected with the vehicle body power supply, the output end is electrically connected with the input end of the CC_BUCK module, the output end of the CC_BUCK module is electrically connected with the lamp, the CC_BOOST module is used for realizing the voltage boost of the CC module, and the CC_BUCK module is used for realizing the voltage drop of the CC module, and the current after voltage drop is input to the externally connected lamp to realize the constant current output of the driving module.

2. The platformed automotive taillight control device of claim 1, wherein, The control device is also integrated with an anti-reverse circuit, the input end of the anti-reverse circuit is electrically connected with the vehicle body, the anti-reverse circuit is composed of a charge pump and an NMOS tube, and is used for preventing the circuit damage caused by the reverse connection of the vehicle body power supply.

3. The platformed automotive taillight control device of claim 2, wherein, The control device is also integrated with a filtering module, the input end of the filtering module is electrically connected with the output end of the anti-reverse circuit, the output end of the filtering module is electrically connected with the input end of the SBC module, and is used for removing the unwanted harmonics in the vehicle body power supply.

4. The platformed automotive taillight control device of claim 3, wherein, The control device is also integrated with an LDO module, the input end of the LDO module is electrically connected with the output end of the filtering module, the output end of the LDO module is electrically connected with the lamp, and is used for inputting the stabilized power supply voltage to the lamp to supply power for the lamp.

5. The platformed automotive taillight control device of claim 3, wherein, The filtering module is integrated with a π type filter.

6. The platformed automotive taillight control device of claim 1, wherein, The control device is also integrated with an ADC module, the first input end of the ADC module is electrically connected with the second output end of the SBC module, the SBC module is used for providing working voltage for the ADC module; the second input end of the ADC module is electrically connected with the lamp, and the output end of the ADC module is electrically connected with the second input end of the MCU module, the ADC module is used for sampling the voltage of the external lamp and converting the sampled analog voltage signal into a digital signal input into the MCU module.

7. The platformed automotive taillight control device of claim 1, wherein, The control device is also integrated with a CAN communication module, a first input end of the CAN communication module is electrically connected with the SBC module, the SBC module is used for providing working voltage for the CAN communication module, a first output end of the CAN communication module is electrically connected with an external lamp, the CAN communication module is bidirectionally electrically connected with the MCU module, and the CAN communication module is used for enabling the MCU module to communicate with the external lamp.

8. The platformed automotive taillight control device of claim 1, wherein, The control device is also integrated with a high-side switch module, an input end of the high-side switch module is electrically connected with the vehicle body, and an output end of the high-side switch module is electrically connected with an external lamp, which is used for outputting channel current to the lamp and controlling the opening and closing of the lamp.

9. The platformed automotive taillight control device of claim 1, wherein, The CV module comprises a CV_BOOST module and at least two CV_BUCK modules; and the CC module comprises a CC_BOOST module and at least two CC_BUCK modules.

10. The platformed automotive taillight control device of claim 1, wherein, The MCU module is integrated with a control chip, the control chip is of S32K146 type, and the MCU module realizes configuration management of different vehicle models and logic processing of different lightings of software by downloading a parameter configuration table.

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