Rear domain controller, control method and vehicle

Abstract

The invention provides a rear domain controller, a control method and a vehicle, and relates to the technical field of automotive electronics, the rear domain controller comprises a main control chip and a group of driving chips, the group of driving chips is used for controlling a plurality of rear domain devices, and the rear domain devices are used for representing vehicle body devices located at the rear end of a vehicle body; the rear area controller is arranged at the tail part of the vehicle body ceiling; the main control chip is used for receiving a target control signal, transmitting the target control signal to a target chip and controlling target back-domain equipment through the target chip, the main control chip is electrically connected with each driving chip in the group of driving chips, the group of driving chips comprises the target chip, and the target chip is electrically connected with the target chip. The target back-domain device is used for representing a back-domain device controlled by the target control signal, and the plurality of back-domain devices comprise the target back-domain device. By implementing the technical scheme provided by the invention, the technical problems that the number of automobile controllers is too large and the wire harness is too long in the prior art are solved.

Description

Technical Field

[0001] The present application relates to the field of automotive electronic technology, and in particular to a rear-domain controller and a control method, and a vehicle. Background Art

[0002] With the continuous development of automotive electronic technology, the control systems of various parts of the vehicle are becoming increasingly complex. Especially in the rear part of the vehicle body, including the tailgate, taillights, rear wing, sunroof and other components, each component requires a corresponding controller to manage. However, the traditional layout method often leads to long wire harnesses, high costs, and scattered controllers, which is not conducive to centralized management and maintenance. In the prior art, the controllers at the rear of the vehicle body are usually set up independently and connected to each other through wire harnesses. This method not only increases the procurement and installation costs of the wire harness, but also reduces the overall stability of the system. Therefore, how to reduce the cost of the wire harness and improve the control integration has become a problem that needs to be solved urgently.

[0003] There is currently no effective solution to the technical problems of too many automobile controllers and too long wiring harnesses in related technologies. Summary of the invention

[0004] The present application provides a rear-domain controller, a control method, and a vehicle to at least solve the technical problems of too many automobile controllers and too long wiring harnesses existing in the related art.

[0005] In a first aspect, the present application provides a back-domain controller, comprising: a main control chip, a group of driver chips, wherein the group of driver chips is used to control multiple back-domain devices, wherein the back-domain device is used to represent the body device located at the rear end of the body; the back-domain controller is deployed at the tail of the body roof; the main control chip is used to receive a target control signal, and transmit the target control signal to a target chip, and control the target back-domain device through the target chip, wherein the main control chip is electrically connected to each driver chip in a group of driver chips, a group of driver chips includes a target chip, the target back-domain device is used to represent the back-domain device controlled by the target control signal, and multiple back-domain devices include the target back-domain device.

[0006] By adopting the above technical scheme, the rear-domain controller includes a main control chip and a group of driver chips, wherein the rear-domain controller is deployed at the rear of the vehicle body roof, a group of driver chips is used to control multiple rear-domain devices, the main control chip is used to receive the target control signal, and transmit the target control signal to the target chip, and control the target rear-domain device through the target chip, the target rear-domain device is the rear-domain device controlled by the target control signal, that is, for any rear-domain device, it can be controlled by the main control chip through the corresponding target chip, that is, the control functions of multiple rear-domain devices are integrated into the rear-domain controller, and the rear-domain controller is set at the rear of the vehicle body roof, which is very close to the rear-domain device, so as to achieve the purpose of saving wiring harnesses, avoid the problem of relatively scattered and large number of automobile controllers in related technologies, and avoid the problem of too long wiring harnesses in related technologies, so as to achieve the purpose of reducing wiring harnesses and achieve the effect of saving wiring harness costs.

[0007] Optionally, a group of driver chips include: a half-bridge intelligent gate driver chip and a high-side driver chip, wherein the half-bridge intelligent gate driver chip is used to control the switching action or PWM action of the half-bridge power electronic device in the first target device, and the first target device includes one or more back-domain devices; the high-side driver chip is used to control the switching action of the grounded load in the second target device, and the second target device includes one or more back-domain devices.

[0008] By adopting the above technical solution, a group of driver chips may include a half-bridge intelligent gate driver chip and a high-side driver chip, wherein the half-bridge intelligent gate driver chip (or half-bridge driver chip for short) is used to control the switching action or PWM action of the half-bridge power electronic device in the first target device, and the high-side driver chip is used to control the switching action of the ground load in the second target device. The first target device may be one or more back-end devices, and the second target device may be one or more back-end devices. That is, the same or similar functions of different back-end devices are controlled by corresponding driver chips, achieving the purpose of integration by function.

[0009] Optionally, the rear-domain equipment includes at least one of the following: a rear tailgate; a rear wing; taillights; a skylight; a rear wiper; a rear defogger; and a sunshade.

[0010] By adopting the above technical solution, the rear-domain equipment may include one or more of the rear tailgate, rear wing, taillight, skylight, rear wiper, rear defogger, sunshade, etc., thus achieving the purpose of integrating the control functions of various rear-domain equipment.

[0011] Optionally, a group of driver chips includes 8 half-bridge driver chips, wherein the 8 half-bridge driver chips are used to control the motor of at least one of the following rear-domain devices: the left support rod motor of the tailgate; the drive motor of the sunshade; the drive motor of the skylight; the suction motor of the tailgate; wherein each motor corresponds to 2 outputs of the 8 half-bridge driver chip.

[0012] By adopting the above technical solution, a group of driver chips includes 8 half-bridge driver chips. For example, every 2 of the 8 half-bridge driver chips can be used to control the motor parts of different back-end devices, thereby achieving the purpose of centrally controlling the control functions of the motor parts of the back-end devices.

[0013] Optionally, a group of driver chips include an integrated high-side driver chip, wherein a first pin is used to control a drive motor for a rear defogger, a second pin is used to control a drive motor for a rear wiper, a third pin is used to control the on and off of a right rear turn signal and / or a right side turn signal, a fourth pin is used to control the on and off of a left rear turn signal and / or a left side turn signal, a fifth pin is used to control the on and off of a driver's side brake light, a sixth pin is used to control the on and off of a passenger side brake light, and a seventh pin is used to control the on and off of a high-mounted brake light, wherein the first pin, the second pin, the third pin, the fourth pin, the fifth pin, the sixth pin and the seventh pin are respectively different pins of the integrated high-side driver chip, and a plurality of high-side driver chips are integrated in the integrated high-side driver chip, and the taillights include a right rear turn signal and / or a right side turn signal, a left rear turn signal and / or a left side turn signal, a driver's side brake light, a passenger side brake light and a high-mounted brake light.

[0014] By adopting the above technical solution, a group of driver chips includes an integrated high-side driver chip, in which multiple high-side driver chips are integrated, and different functions of multiple rear-domain devices can be controlled. For example, the first pin of the integrated high-side driver chip is used to control the drive motor of the rear defogger, the second pin is used to control the drive motor of the rear wiper, the third pin is used to control the right rear turn signal and / or the right side turn signal, the fourth pin is used to control the left rear turn signal and / or the left side turn signal, the fifth pin is used to control the main driver's side brake light, the sixth pin is used to control the passenger side brake light, and the seventh pin is used to control the high-mounted brake light. The purpose of centralized control of the rear defogger, rear wiper and taillight using the integrated high-side driver chip is achieved.

[0015] Optionally, the integrated high-side driver chip includes an eighth pin, a ninth pin, a tenth pin and an eleventh pin, and the taillights also include a driver's side rear position light, a reversing light, a rear fog light and a passenger's side rear position light, wherein the eighth pin is used to control the on and off of the driver's side rear position light, the ninth pin is used to control the on and off of the reversing light, the tenth pin is used to control the on and off of the rear fog light, and the eleventh pin is used to control the on and off of the passenger's side rear position light.

[0016] By adopting the above technical solution, further, the eighth pin of the integrated high-side driver chip is used to control the on and off of the rear position light on the driver's side, the ninth pin is used to control the on and off of the reversing light, the tenth pin is used to control the on and off of the rear fog light, and the eleventh pin is used to control the on and off of the rear position light on the passenger side, thereby achieving the purpose of further improving the control integration of the rear domain controller.

[0017] Optionally, a group of driver chips also includes at least one of the following: a kick integrated chip and a radar signal acquisition chip, wherein the kick integrated chip is used to obtain a first data set collected by the kick up sensor and the kick down sensor, and transmit the first data set to the main control chip to instruct the main control chip to control the tailgate to perform a switch operation based on the first data set, wherein the rear domain device includes the kick up sensor and the kick down sensor; the radar signal acquisition chip is used to obtain a second data set collected by a group of radars, and transmit the second data set to the central controller through the main control chip to instruct the central controller to provide driving guidance based on the second data set, wherein the rear domain device includes a group of radars.

[0018] By adopting the above technical solution, a group of driver chips also includes a kick integrated chip and / or a radar signal acquisition chip, wherein the kick integrated chip is used to obtain the first data set collected by the kick upper sensor and the kick lower sensor, and transmit it to the main control chip, and then the main control chip can control the rear tailgate based on this; the radar signal acquisition chip can be used to obtain the second data set collected by a group of radars, and transmit it to the central controller through the main control chip, and then provide guidance for driving based on this. The purpose of integrating the functions of the radar signal acquisition chip and the kick integrated chip into the rear domain controller is achieved, and the control integration is further improved.

[0019] Optionally, the rear domain controller also includes a first switch detection circuit module, wherein the first switch detection circuit module is used to obtain a first group of switch status signals, wherein the first group of switch status signals includes at least one of the following: a lock reset signal of the rear tailgate; a first-level lock signal of the rear tailgate; a second-level lock signal of the rear tailgate; the rear domain controller also includes a second switch detection circuit module, wherein the second switch detection circuit module is used to obtain a second group of switch status signals, wherein the second group of switch status signals includes at least one of the following: a rear wiper stop position signal; a right rear turn signal body side fault feedback signal; a right rear turn signal tailgate side fault feedback signal; a left rear turn signal body side fault feedback signal; a left rear turn signal tailgate side fault feedback signal; the rear domain controller also includes an analog quantity acquisition module, wherein the analog quantity acquisition module is used to obtain a third group of switch status signals, wherein the third group of switch status signals includes at least one of the following: a rear tailgate lower edge switch signal; a rear tailgate left anti-pinch strip signal; a rear tailgate right anti-pinch strip signal; the first switch detection circuit module, the second switch detection circuit module and the analog quantity acquisition module are all electrically connected to the main control chip.

[0020] By adopting the above technical solution, the back-domain controller also integrates a first switch detection circuit module, a second switch detection circuit module and an analog quantity acquisition module, which are respectively used to obtain switch status signals of different back-domain devices, including switch analog quantity signals, thereby achieving the purpose of integrating the detection functions of some switch states in the back-domain devices into the back-domain controller.

[0021] Optionally, a group of driver chips also includes a system basis chip, wherein the system basis chip includes a CAN communication interface and / or a LIN communication interface, and the system basis chip is used to communicate with other domain controllers or central controllers via the CAN bus and / or the LIN bus.

[0022] In a second aspect of the present application, a control method for a back-domain controller is also provided, which is applied to any of the back-domain controllers mentioned above, and includes: a main control chip receives a target control signal and transmits the target control signal to a target chip, wherein a group of driver chips includes the target chip; the target chip controls a target back-domain device based on the target control signal, wherein a plurality of back-domain devices include the target back-domain device.

[0023] By adopting the above technical scheme, the rear-domain controller includes a main control chip and a group of driver chips, wherein the rear-domain controller is deployed at the rear of the vehicle body roof, a group of driver chips are used to control multiple rear-domain devices, the main control chip receives the target control signal, and transmits the target control signal to the target chip, and the target chip controls the target rear-domain device based on the target control signal, and the target rear-domain device is the rear-domain device controlled by the target control signal, that is, for any rear-domain device, it can be controlled by the main control chip through the corresponding target chip, that is, the control functions of multiple rear-domain devices are integrated into the rear-domain controller, and the rear-domain controller is set at the rear of the vehicle body roof, which is very close to the rear-domain device, so as to achieve the purpose of saving wiring harnesses, avoid the problem of scattered deployment and large number of automobile controllers in related technologies, and avoid the problem of excessively long wiring harnesses in related technologies, so as to achieve the purpose of reducing wiring harnesses and achieve the effect of saving wiring harness costs.

[0024] In a third aspect of the present application, a vehicle is also provided, comprising a rear domain controller as described in any one of the above items.

[0025] In a fourth aspect of the present application, an electronic device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the program, any of the above method steps is implemented.

[0026] In a fifth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores instructions, and when the instructions are executed, any of the above method steps is performed.

[0027] In summary, one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. It avoids the problem of scattered deployment and large number of automobile controllers in related technologies, and also avoids the problem of too long wiring harnesses in related technologies, thereby achieving the purpose of reducing wiring harnesses and saving wiring harness costs.

[0028] 2. The same or similar functions of different back-end devices are controlled by corresponding driver chips, achieving the purpose of integration by function and integrating the control functions of various back-end devices.

[0029] 3. The purpose of improving control integration has been achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a system framework diagram of a post-domain controller provided in an embodiment of the present application; Figure 2 This is a structural example of a post-domain controller provided in an embodiment of the present application. Figure 1 ; Figure 3 This is a structural example of a post-domain controller provided in an embodiment of the present application. Figure 2 ; Figure 4 This is a structural example of a post-domain controller provided in an embodiment of the present application. Figure 3 ; Figure 5 This is a structural example of a post-domain controller provided in an embodiment of the present application. Figure 4 ; Figure 6 This is a structural example of a post-domain controller provided in an embodiment of the present application. Figure 5 ; Figure 7 This is a schematic diagram of an application scenario of a back-end domain controller provided in an embodiment of the present application; Figure 8 This is a flow chart of a control method of a back-end controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to enable technicians in this field to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0032] In the description of the embodiments of the present application, words such as "for example" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" or "for example" is intended to present related concepts in a specific way.

[0033] In the description of the embodiments of the present application, the meaning of the term "multiple" refers to two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0034] This application provides a post-domain controller, referring to Figure 1 , Figure 1It is a system framework diagram of a back-domain controller provided by an embodiment of the present application, including: a main control chip, a group of driver chips, wherein the group of driver chips is used to control multiple back-domain devices, wherein the back-domain device is used to represent the body device located at the rear end of the body; the back-domain controller is deployed at the tail of the body roof; the main control chip is used to receive the target control signal, and transmit the target control signal to the target chip, and control the target back-domain device through the target chip, wherein the main control chip is electrically connected to each driver chip in the group of driver chips, the group of driver chips includes the target chip, the target back-domain device is used to represent the back-domain device controlled by the target control signal, and multiple back-domain devices include the target back-domain device.

[0035] In the above embodiment, the rear-domain controller includes a main control chip and a group of driver chips, wherein the rear-domain controller is deployed at the rear of the vehicle body roof (or called the roof of the rear of the vehicle body), a group of driver chips is used to control multiple rear-domain devices, the main control chip is used to receive a target control signal, and transmit the target control signal to the target chip, and control the target rear-domain device through the target chip. The target rear-domain device is a rear-domain device controlled by the target control signal, that is, for any rear-domain device, it can be controlled by the main control chip through the corresponding target chip, that is, the control functions of multiple rear-domain devices are integrated into the rear-domain controller. The main control chip in the embodiment of the present application can be a single-chip microcomputer (MCU), and the rear-domain controller is arranged at the rear of the vehicle body roof, which is very close to the rear-domain device, so that the total length of the wiring harness of the multiple rear-domain devices and the rear-domain controller is less than or equal to the preset value. The total length of the wiring harness is made as small as possible, which can achieve the purpose of saving the wiring harness, avoid the problem of scattered deployment and large number of automobile controllers in the related art, and avoid the problem of excessively long wiring harnesses in the related art, achieve the purpose of reducing the wiring harness, and achieve the effect of saving the wiring harness cost.

[0036] In an optional embodiment, a group of driver chips include: a half-bridge intelligent gate driver chip and a high-side driver chip, wherein the half-bridge intelligent gate driver chip is used to control the switching action or PWM action of the half-bridge power electronic device in a first target device, and the first target device includes one or more back-domain devices; the high-side driver chip is used to control the switching action of the grounded load in the second target device, and the second target device includes one or more back-domain devices.

[0037] In the above embodiment, a group of driver chips may include a half-bridge intelligent gate driver chip and a high-side driver chip, wherein the half-bridge intelligent gate driver chip (or half-bridge driver chip for short) is used to control the switching action or PWM action of the half-bridge power electronic device in the first target device, and the high-side driver chip is used to control the switching action of the grounded load in the second target device. The first target device may be one or more back-end devices, and the second target device may be one or more back-end devices. A group of driver chips may include one or more half-bridge intelligent gate driver chips, and may also include one or more high-side driver chips, that is, the same or similar functions of different back-end devices are controlled by corresponding driver chips, thereby achieving the purpose of integration by function. In practical applications, a group of driver chips may also include a low-side driver chip as needed, wherein the low-side driver chip can be used to control the switching action of the power supply load in the third target device, and the third target device includes one or more back-end devices.

[0038] In an optional embodiment, the rear-domain equipment includes at least one of the following: a rear tailgate; a rear wing; a taillight; a skylight; a rear wiper; a rear defogger; and a sunshade.

[0039] In the above embodiment, the rear-domain equipment may include one or more of the rear tailgate, rear wing, taillight, skylight, rear wiper, rear defogger, sunshade, etc. That is, the purpose of integrating the control functions of various rear-domain equipment is achieved. The rear-domain equipment may also include other body equipment located at the rear end of the vehicle body, such as rear seats, rear side radar, etc.

[0040] In an optional embodiment, a group of driver chips includes an 8-way half-bridge driver chip, wherein the 8-way half-bridge driver chip is used to control the motor of at least one of the following rear-domain devices: the left support rod motor of the tailgate; the drive motor of the sunshade; the drive motor of the skylight; the suction motor of the tailgate; wherein each motor corresponds to 2 outputs of the 8-way half-bridge driver chip.

[0041] In the above embodiment, a group of driver chips includes 8 half-bridge driver chips, and every 2 of the 8 half-bridge driver chips can be used to control the motor parts of different rear-domain devices, so that 1-4 motors can be controlled. Taking the control of the drive of 4 motors as an example, for example, the 1st and 2nd channels are used to control the left support rod motor of the rear tailgate, the 3rd and 4th channels are used to control the drive motor of the sunshade, the 5th and 6th channels are used to control the drive motor of the skylight, and the 7th and 8th channels are used to control the suction motor of the rear tailgate. Figure 2 shown.

[0042] Of course, in practical applications, 2-way half-bridge driver chips or 4-way half-bridge driver chips can also be used to control the motor part of the back-end device. Taking the 2-way half-bridge driver chip as an example, for example, the above-mentioned group of driver chips may include the first 2-way half-bridge driver chip, the second 2-way half-bridge driver chip, the third 2-way half-bridge driver chip, and the fourth 2-way half-bridge driver chip. Each 2-way half-bridge driver chip is equivalent to 2 half-bridge driver chips. Each 2-way half-bridge driver chip can be composed of 2 half-bridge driver chips or a chip integrating 2 half-bridge driver chips. Each 2-way half-bridge driver chip can be used to control the motor part of different back-end devices respectively. For some motors that need to be reversed, 2-way half-bridge driver chips are required accordingly; this half-bridge driver chip basically drives the brushed DC motor to be reversed, and the pulse or stall current of the motor will be 25A-32A, and the motor current is relatively large. The purpose of centralized control of the control function of the motor part of the back-end device is achieved.

[0043] like Figure 2 As shown, Figure 2 In addition to the above-mentioned 8-way half-bridge driver chip, a set of driver chips in the embodiment also includes 3 motor Hall signal input modules and a switch detection circuit module, wherein the motor Hall signal input module is used to detect the state signal of the corresponding motor, for example, the motor Hall signal input module corresponding to the left support rod motor is used to obtain the signal of the Hall element in the left support rod motor, such as Figure 2 HALL1 and HALL2 in the figure, and other motor Hall signal input modules are similar to this, and the switch detection circuit module is used to obtain some switch status signals, such as lock motor signals, such as obtaining the first-level lock signal, second-level lock signal and lock reset signal of the rear tailgate.

[0044] In an optional embodiment, a group of driver chips includes an integrated high-side driver chip, wherein a first pin is used to control a drive motor for a rear defogger, a second pin is used to control a drive motor for a rear wiper, a third pin is used to control the on and off of a right rear turn signal and / or a right side turn signal, a fourth pin is used to control the on and off of a left rear turn signal and / or a left side turn signal, a fifth pin is used to control the on and off of a driver's side brake light, a sixth pin is used to control the on and off of a passenger side brake light, and a seventh pin is used to control the on and off of a high-mounted brake light, wherein the first pin, the second pin, the third pin, the fourth pin, the fifth pin, the sixth pin and the seventh pin are respectively different pins of the integrated high-side driver chip, and a plurality of high-side driver chips are integrated in the integrated high-side driver chip, and the taillights include a right rear turn signal and / or a right side turn signal, a left rear turn signal and / or a left side turn signal, a driver's side brake light, a passenger side brake light and a high-mounted brake light.

[0045] In the above embodiment, a group of driver chips includes an integrated high-side driver chip, in which multiple high-side driver chips are integrated, and different functions of multiple rear-domain devices can be controlled. For example, the first pin of the integrated high-side driver chip is used to control the drive motor of the rear defogger, the second pin is used to control the drive motor of the rear wiper, the third pin is used to control the on and off of the right rear turn signal and / or the right side turn signal, the fourth pin is used to control the on and off of the left rear turn signal and / or the left side turn signal, the fifth pin is used to control the on and off of the main driver's side brake light, the sixth pin is used to control the on and off of the passenger side brake light, and the seventh pin is used to control the on and off of the high-mounted brake light. The purpose of centralized control of the rear defogger, rear wiper and taillights using the integrated high-side driver chip is achieved. The high-side driver chip is used to control the switching action of the grounded load in some rear-domain devices. This method basically drives some lights with a current of 2A-10A, or unidirectional DC motors.

[0046] In an optional embodiment, the integrated high-side driver chip includes an eighth pin, a ninth pin, a tenth pin and an eleventh pin, and the taillights also include a driver's side rear position light, a reversing light, a rear fog light and a passenger's side rear position light, wherein the eighth pin is used to control the on and off of the driver's side rear position light, the ninth pin is used to control the on and off of the reversing light, the tenth pin is used to control the on and off of the rear fog light, and the eleventh pin is used to control the on and off of the passenger's side rear position light.

[0047] In the above embodiment, further, the eighth pin of the integrated high-side driver chip is used to control the on and off of the rear position light on the driver's side, the ninth pin is used to control the on and off of the reversing light, the tenth pin is used to control the on and off of the rear fog light, and the eleventh pin is used to control the on and off of the rear position light on the passenger side, thereby achieving the purpose of further improving the control integration of the rear domain controller.

[0048] like Figure 3 As shown, the integrated high-side driver chip integrates eleven high-side driver chips, which are used to control the rear defogger, rear wiper and various taillights. It should be noted that Figure 3 In the example above, only 11 high-side driver chips are included in the integrated high-side driver chip. In actual applications, the integrated high-side driver chip may include more high-side driver chips. For example, some ports or pins may be reserved for controlling other back-domain devices, or for controlling new back-domain devices to be developed in the future.

[0049] In an optional embodiment, a group of driver chips also includes at least one of the following: a kick integrated chip and a radar signal acquisition chip, wherein the kick integrated chip is used to obtain a first data set collected by the kick up sensor and the kick down sensor, and transmit the first data set to the main control chip to instruct the main control chip to control the rear tailgate to perform a switch operation based on the first data set, wherein the rear domain device includes the kick up sensor and the kick down sensor; the radar signal acquisition chip is used to obtain a second data set collected by a group of radars, and transmit the second data set to the central controller through the main control chip to instruct the central controller to provide driving guidance based on the second data set, wherein the rear domain device includes a group of radars.

[0050] In the above embodiment, a group of driver chips also includes a kick integrated chip and / or a radar signal acquisition chip, wherein the kick integrated chip is used to obtain a first data set collected by the kick upper sensor and the kick lower sensor, and transmit it to the main control chip, and then the main control chip can control the rear tailgate based on this; the radar signal acquisition chip can be used to obtain a second data set collected by a group of radars, and transmit it to the central controller through the main control chip, and then provide guidance for driving based on this. The purpose of integrating the functions of the radar signal acquisition chip and the kick integrated chip into the rear domain controller is achieved, and the control integration is further improved.

[0051] like Figure 4 As shown, the kick integrated chip is used to collect sensor signals and transmit them to the main control chip for some processing and judgment. The radar signal acquisition chip can be used to collect signals from the rear radar (such as reversing radar). Figure 4 As shown, it is used to collect signals from radar 1 to radar 6 to provide guidance for reversing.

[0052] In an optional embodiment, the rear domain controller also includes a first switch detection circuit module, wherein the first switch detection circuit module is used to obtain a first group of switch status signals, wherein the first group of switch status signals includes at least one of the following: a lock reset signal of the rear tailgate; a primary lock signal of the rear tailgate; a secondary lock signal of the rear tailgate; the rear domain controller also includes a second switch detection circuit module, wherein the second switch detection circuit module is used to obtain a second group of switch status signals, wherein the second group of switch status signals includes at least one of the following: a rear wiper stop position signal; a right rear turn signal body side fault feedback signal; a right rear turn signal tailgate side fault feedback signal; a left rear turn signal body side fault feedback signal; a left rear turn signal tailgate side fault feedback signal; the rear domain controller also includes an analog quantity acquisition module, wherein the analog quantity acquisition module is used to obtain a third group of switch status signals, wherein the third group of switch status signals includes at least one of the following: a rear tailgate lower edge switch signal; a rear tailgate left anti-pinch strip signal; a rear tailgate right anti-pinch strip signal; the first switch detection circuit module, the second switch detection circuit module and the analog quantity acquisition module are all electrically connected to the main control chip.

[0053] In the above embodiment, the back-end controller further integrates a first switch detection circuit module, a second switch detection circuit module and an analog quantity acquisition module, such as Figure 5 As shown in the figure, SWITCH is a switch signal, which may be a switch signal of a button, such as the lock reset signal, the first-level lock signal, the second-level lock signal, etc. of the electric tailgate, as well as the rear wiper stop position signal, the left rear turn signal body side / tailgate side fault feedback signal, the right rear turn signal body side / tailgate side fault feedback signal; the switch signal may also be with resistance, that is, the analog value is collected, such as Figure 5 AD_SWITCH in the module is used to collect analog switch signals, such as the lower edge switch signal of the electric tailgate, the right anti-pinch strip signal, and the left anti-pinch strip signal light, which are used to obtain the switch status signals of different back-end devices, including the switch analog signal, so as to integrate the detection functions of some switch statuses in the back-end devices into the back-end controller. In practical applications, the first switch detection circuit module, the second switch detection circuit module, and the analog acquisition module can also reserve some detection items to perform switch status detection on other back-end devices or back-end devices to be developed.

[0054] In an optional embodiment, a group of driver chips also includes a system basis chip, wherein the system basis chip includes a CAN communication interface and / or a LIN communication interface, and the system basis chip is used to communicate with other domain controllers or central controllers via the CAN bus and / or LIN bus.

[0055] In the above embodiments, CAN and LIN are two different communication networks of the vehicle body, which are used to communicate with other modules, such as interacting with other domain controllers, or communicating with a superior controller (or master controller, or central controller). Figure 6 As shown, SBC is a system basic chip. A set of chips can also include multiple half-bridge driver chips, which can be used to drive radar power, license plate lights, turn signal flow enable pins, headlight dynamic enable signals, motor Hall element power supplies, such as Figure 2 The Hall element in the SBC can use multiple half-bridge driver chips to provide power. SBC is a system basic chip, which generally includes communication: CAN\LIN, high-side driver; provides 5V or 3.3V power supply. Optionally, the back-end controller can also integrate a buzzer driver chip, such as Figure 6 Chime Driver can be used to control an external buzzer.

[0056] Figure 7 This is a schematic diagram of an application scenario of a rear-domain controller provided in an embodiment of the present application. The rear-domain controller is deployed on the ceiling at the rear of the vehicle body and can be used to control a variety of rear-domain devices, such as a rear tailgate, rear wing, taillights, sunroof, rear wiper, rear defogger, and can also be used to control other devices such as foot sensors and reversing radars.

[0057] It should be noted that the rear-domain controller in the embodiment of the present application can be simultaneously provided with or integrated with the driver chip or module in any of the aforementioned embodiments, that is, the aforementioned different embodiments can be combined. In the embodiment of the present application, some driver chips are also reserved for driving other rear-domain devices. For example, some electric tailgates are configured with double struts (two electric struts) and some are configured with single struts (one electric strut and one gas strut); therefore, a 2-way half-bridge driver chip or a multi-way half-bridge driver chip corresponding to the right strut can also be reserved; in addition, the lock motor of the electric tailgate is divided into an integrated lock motor (which can both unlock and lock) and a separate lock motor, which means that the unlocking and locking functions are separated. At this time, two motor drives are required, so corresponding half-bridge driver chips are also reserved.

[0058] The present application also provides a control method for a back-end controller, which is applied to any of the back-end controllers mentioned above, such as Figure 8 As shown, Figure 8 This is a flow chart of a control method of a back-end controller provided in an embodiment of the present application, including: Step S801, the main control chip receives a target control signal and transmits the target control signal to a target chip, wherein a group of driver chips includes the target chip; Step S802: The target chip controls the target back-domain device based on the target control signal, wherein the multiple back-domain devices include the target back-domain device.

[0059] In the above embodiment, the rear-domain controller includes a main control chip and a group of driver chips, wherein the rear-domain controller is deployed at the rear of the vehicle body roof, a group of driver chips are used to control multiple rear-domain devices, the main control chip receives a target control signal, and transmits the target control signal to the target chip, and the target chip controls the target rear-domain device based on the target control signal, and the target rear-domain device is the rear-domain device controlled by the target control signal, that is, for any rear-domain device, it can be controlled by the main control chip through the corresponding target chip, that is, the control functions of multiple rear-domain devices are integrated into the rear-domain controller, and the rear-domain controller is set at the rear of the vehicle body roof, which is very close to the rear-domain device, so as to achieve the purpose of saving wiring harnesses, avoid the problem of relatively scattered and large number of automobile controllers in related technologies, and avoid the problem of too long wiring harnesses in related technologies, so as to achieve the purpose of reducing wiring harnesses and achieve the effect of saving wiring harness costs.

[0060] The present application also provides a vehicle, comprising a rear domain controller in any of the above embodiments, which can save wiring harnesses and thus achieve the effect of cost saving.

[0061] The embodiments of the present application have the following advantages: (1) Advantages in wiring harness cost: the rear domain controller is placed on the top of the vehicle body, which is very close to the tailgate, taillights, rear wing, sunroof, etc., thus saving wiring harness cost; (2) Advantages in solution integration: after integrating the tailgate, taillights, rear wing, sunroof, etc. controllers at the rear of the vehicle body, the purchase cost of the controller can be reduced; (3) Reduction in the wiring harness cost of the tailgate strut motor: the connector of the tailgate motor can be directly connected to the rear domain controller, thus reducing the cost of the intermediate adapter wiring harness; (4) The rear domain controller designed by our company also has some reserved items, which can support some reserved items, such as: double struts, seat adjustment, etc.

[0062] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0063] The present application also provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed, any one of the method steps described above is executed.

[0064] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0065] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0066] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0067] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0068] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0069] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned memory includes: various media that can store program codes, such as USB flash drives, mobile hard drives, magnetic disks or optical disks.

[0070] The above is only an exemplary embodiment of the present disclosure and cannot be used to limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the disclosure of the specification and the truth of practice, those skilled in the art will easily think of other embodiments of the present disclosure.

[0071] This application is intended to cover any modifications, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the technical field not recorded in the present disclosure.

Claims

1. A post-domain controller, characterized in that: include: Main control chip, a group of driver chips, among which, The group of driving chips is used to control a plurality of rear-domain devices, wherein the rear-domain devices are used to represent body devices located at the rear end of the body; The rear domain controller is deployed at the rear of the vehicle body roof; The main control chip is used to receive a target control signal, transmit the target control signal to a target chip, and control a target back-domain device through the target chip, wherein the main control chip is electrically connected to each driver chip in the group of driver chips, the group of driver chips includes the target chip, the target back-domain device is used to represent the back-domain device controlled by the target control signal, and the multiple back-domain devices include the target back-domain device.

2. The post-domain controller according to claim 1, characterized in that: The group of driver chips includes: a half-bridge intelligent gate driver chip and a high-side driver chip, wherein: The half-bridge intelligent gate driver chip is used to control the switching action or PWM action of the half-bridge power electronic device in the first target device, and the first target device includes one or more of the back-end devices; The high-side driver chip is used to control the switching action of the ground load in the second target device, and the second target device includes one or more of the back-domain devices.

3. The post-domain controller according to claim 1, characterized in that: The back-end device includes at least one of the following: Tailgate; rear wing; taillights; skylight; rear wiper; rear defogger; sunshade.

4. The post-domain controller according to claim 3, characterized in that: The group of driver chips includes 8 half-bridge driver chips, wherein: The 8-way half-bridge driver chip is used to control the motor of at least one of the following back-end devices: The left support rod motor of the rear tailgate; the driving motor of the sunshade; the driving motor of the skylight; the suction motor of the rear tailgate; Among them, each motor corresponds to 2 outputs of the 8-way half-bridge driver chip.

5. The post-domain controller according to claim 3, characterized in that: The group of driver chips includes an integrated high-side driver chip, wherein: The first pin is used to control the drive motor of the rear defogger, the second pin is used to control the drive motor of the rear wiper, the third pin is used to control the on and off of the right rear turn signal and / or the right side turn signal, the fourth pin is used to control the on and off of the left rear turn signal and / or the left side turn signal, the fifth pin is used to control the on and off of the main driver's side brake light, the sixth pin is used to control the on and off of the passenger side brake light, and the seventh pin is used to control the on and off of the high-mounted brake light, wherein the first pin, the second pin, the third pin, the fourth pin, the fifth pin, the sixth pin and the seventh pin are respectively different pins of the integrated high-side driver chip, and a plurality of high-side driver chips are integrated in the integrated high-side driver chip, and the taillight includes the right rear turn signal and / or the right side turn signal, the left rear turn signal and / or the left side turn signal, the main driver's side brake light, the passenger side brake light and the high-mounted brake light.

6. The post-domain controller according to claim 5, characterized in that: The integrated high-side driver chip includes an eighth pin, a ninth pin, a tenth pin and an eleventh pin, and the taillight also includes a driver's side rear position light, a reversing light, a rear fog light and a passenger's side rear position light, wherein the eighth pin is used to control the on and off of the driver's side rear position light, the ninth pin is used to control the on and off of the reversing light, the tenth pin is used to control the on and off of the rear fog light, and the eleventh pin is used to control the on and off of the passenger's side rear position light.

7. The post-domain controller according to claim 3, characterized in that: The group of driver chips also includes at least one of the following: a kick integrated chip, a radar signal acquisition chip, wherein: The kick integrated chip is used to obtain a first data set collected by the kick up sensor and the kick down sensor, and transmit the first data set to the main control chip to instruct the main control chip to control the rear tailgate to perform an opening and closing operation based on the first data set, wherein the rear domain device includes the kick up sensor and the kick down sensor; The radar signal acquisition chip is used to obtain a second data set collected by a group of radars, and transmit the second data set to the central controller through the main control chip to instruct the central controller to provide driving guidance based on the second data set, wherein the back-end device includes the group of radars.

8. The post-domain controller according to claim 3, characterized in that: The rear domain controller further includes a first switch detection circuit module, wherein the first switch detection circuit module is used to obtain a first set of switch state signals, wherein the first set of switch state signals includes at least one of the following: a lock reset signal of the rear tailgate; a primary lock signal of the rear tailgate; a secondary lock signal of the rear tailgate; The rear domain controller further includes a second switch detection circuit module, wherein the second switch detection circuit module is used to obtain a second set of switch state signals, wherein the second set of switch state signals includes at least one of the following: a rear wiper stop position signal; a right rear turn signal body side fault feedback signal; a right rear turn signal tailgate side fault feedback signal; a left rear turn signal body side fault feedback signal; a left rear turn signal tailgate side fault feedback signal; The rear domain controller further includes an analog quantity acquisition module, wherein the analog quantity acquisition module is used to obtain a third group of switch state signals, wherein the third group of switch state signals includes at least one of the following: the lower edge switch signal of the rear tailgate; the left anti-pinch strip signal of the rear tailgate; the right anti-pinch strip signal of the rear tailgate; The first switch detection circuit module, the second switch detection circuit module and the analog quantity acquisition module are all electrically connected to the main control chip.

9. A control method for a back-end controller, applied to the back-end controller according to any one of claims 1 to 8, characterized in that: include: The main control chip receives the target control signal and transmits the target control signal to the target chip, wherein the group of driving chips includes the target chip; The target chip controls a target back-domain device based on the target control signal, wherein the plurality of back-domain devices include the target back-domain device.

10. A vehicle, characterized in that: A post-domain controller comprising any one of claims 1 to 8.

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