CN-122014074-A - Front hatch cover driving circuit and vehicle

CN122014074ACN 122014074 ACN122014074 ACN 122014074ACN-122014074-A

Abstract

The application discloses a front hatch cover driving circuit and a vehicle, and belongs to the technical field of vehicle control. The front hatch cover driving circuit comprises a first control module, a second control module and a power supply control unit, wherein the first control module is used for outputting a power supply enabling signal, the second control module comprises a power supply control unit and a driving unit, and the power supply control unit is used for outputting a power supply voltage to the driving unit under the condition that the power supply enabling signal and the internal enabling signal are received. The application provides a first control module and a second control module for cooperatively controlling a driving unit, wherein the second control module can output a power supply voltage only by receiving a power supply enabling signal and an internal enabling signal generated by the second control module, and cannot trigger power supply under the condition that any control module fails, so that the technical problem that a control chip with a single safety level cannot meet the safety requirement required by unlocking a front hatch, and the driving circuit is easy to malfunction, so that the front hatch is not opened expected is solved.

Inventors

FANG TAO
LI FUFAN
CHEN SHUHUA

Assignees

浙江凌艾未来科技有限公司
浙江零跑科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260306

Claims (10)

1. A front hatch drive circuit, comprising: the first control module is used for outputting a power supply enabling signal according to the front hatch opening instruction; the second control module is connected with the first control module and comprises a power supply control unit and a driving unit; The power supply control unit is used for outputting power supply voltage under the condition that the power supply enabling signal and the internal enabling signal are received, wherein the internal enabling signal is generated by the second control module according to the internal state, and the driving unit is used for outputting a driving signal according to the power supply voltage so as to drive the front hatch lock load to execute actions.
2. The front hatch drive circuit of claim 1 wherein the first control module comprises: the first controller is used for outputting the front hatch opening instruction; and the enabling control unit is connected with the first controller and is provided with a first switch part, the first switch part is connected between a first power end and an output end of the enabling control unit, and the first switch part is conducted under the condition that the front hatch opening instruction is effective so as to enable the enabling control unit to output the power supply enabling signal.
3. The front hatch driving circuit according to claim 2, wherein the enabling control unit further comprises a first disabling portion, an input end of the first disabling portion is connected to a disabling control pin of the first controller, an output end of the first disabling portion is connected to an input end of the first switch portion, and the first disabling portion is configured to pull down an input end voltage of the first switch portion according to a first disabling control signal output by the first controller, so that the first switch portion is turned off.
4. The front hatch drive circuit according to claim 2, wherein the second control module has a second controller connected to the power supply control unit for outputting the internal enable signal, the power supply control unit comprising: The second switch part is connected with the power supply enabling signal output end of the first control module and is used for outputting a switch enabling signal according to the power supply enabling signal; The first input end of the AND gate is connected with the switch enabling signal output end of the second switch part, and the second input end of the AND gate is connected with the internal enabling signal output end of the second controller; The third switch part is connected between a second power end and the output end of the power supply control unit, the control end of the third switch part is connected with the AND gate, and the third switch part is used for being conducted under the condition that AND logic signals are effective so as to enable the power supply control unit to output the power supply voltage; and outputting the effective AND logic signal under the condition that the AND gate receives the switch enabling signal and the internal enabling signal.
5. The front hatch drive circuit according to claim 4, wherein the first controller and the second controller each have a first safety level, the drive signal for driving the front hatch lock load having a second safety level, wherein the second safety level is higher than the first safety level.
6. The front hatch driving circuit according to claim 4, wherein the second control module further comprises a second disabling portion, an input terminal of the second disabling portion is connected to a disabling control pin of the second controller, an output terminal of the second disabling portion is connected to a second input terminal of the and gate, and the second disabling portion is configured to pull down a voltage of the second input terminal of the and gate according to a second disabling control signal output by the second controller, so as to disable the and logic signal.
7. The front hatch cover driving circuit according to claim 1, wherein the driving unit comprises a driving chip, a logic pin of the driving chip is connected with an external control chip, a power pin of the driving chip is connected with the power supply control unit, an output pin of the driving chip is connected with the front hatch cover lock load, and the driving chip is used for outputting the driving signal according to a control signal output by the control chip and the power supply voltage output by the power supply control unit.
8. The front hatch drive circuit according to claim 1, wherein the first control module further comprises a stoping unit connected to the power supply control unit for sampling the power supply voltage and outputting a stoping signal.
9. The front hatch drive circuit of claim 1, wherein the first control module is disposed in a first region of a vehicle and the second control module is disposed in a second region of the vehicle, the first region and the first region being separate from each other.
10. A vehicle, characterized in that the vehicle comprises a front hatch drive circuit according to any of claims 1 to 9.

Description

Front hatch cover driving circuit and vehicle Technical Field The application relates to the technical field of vehicle control, in particular to a front hatch cover driving circuit and a vehicle. Background As automobiles develop in electric power, the front hatch (i.e., the trunk) is increasingly used in vehicles. In order to improve the space utilization experience of users, the opening control of the front hatch cover is realized in an electronic driving mode. However, the single control chip is difficult to meet the safety requirements required by high-risk actions such as unlocking the front hatch, and under the condition of single control chip failure, misoperation of the driving circuit can be caused, so that the front hatch is unexpected to be opened in the driving process, the vision of a driver is seriously blocked, and the driving safety is influenced. Disclosure of Invention The front hatch cover driving circuit and the vehicle aim to solve the technical problems that a control chip with a single safety level cannot meet the safety requirement required by front hatch cover unlocking, and the driving circuit is easy to malfunction, so that the front hatch cover is not opened expected. In a first aspect, an embodiment of the present application provides a front hatch driving circuit, including: the first control module is used for outputting a power supply enabling signal according to the front hatch opening instruction; the second control module is connected with the first control module and comprises a power supply control unit and a driving unit; The power supply control unit is used for outputting power supply voltage under the condition that the power supply enabling signal and the internal enabling signal are received, wherein the internal enabling signal is generated by the second control module according to the internal state, and the driving unit is used for outputting a driving signal according to the power supply voltage so as to drive the front hatch lock load to execute actions. In an embodiment of the application, the first control module includes: the first controller is used for outputting the front hatch opening instruction; and the enabling control unit is connected with the first controller and is provided with a first switch part, the first switch part is connected between a first power end and an output end of the enabling control unit, and the first switch part is conducted under the condition that the front hatch opening instruction is effective so as to enable the enabling control unit to output the power supply enabling signal. In an embodiment of the application, the enabling control unit further includes a first disabling portion, an input end of the first disabling portion is connected to a disabling control pin of the first controller, an output end of the first disabling portion is connected to an input end of the first switch portion, and the first disabling portion is configured to pull down an input end voltage of the first switch portion according to a first disabling control signal output by the first controller, so that the first switch portion is turned off. In one embodiment of the present application, the second control module has a second controller, and the second controller is connected to the power supply control unit, and is configured to output the internal enable signal, and the power supply control unit includes: The second switch part is connected with the power supply enabling signal output end of the first control module and is used for outputting a switch enabling signal according to the power supply enabling signal; The first input end of the AND gate is connected with the switch enabling signal output end of the second switch part, and the second input end of the AND gate is connected with the internal enabling signal output end of the second controller; The third switch part is connected between a second power end and the output end of the power supply control unit, the control end of the third switch part is connected with the AND gate, and the third switch part is used for being conducted under the condition that AND logic signals are effective so as to enable the power supply control unit to output the power supply voltage; and outputting the effective AND logic signal under the condition that the AND gate receives the switch enabling signal and the internal enabling signal. In an embodiment of the application, the first controller and the second controller each have a first safety level, and the drive signal for driving the front hatch lock load has a second safety level, wherein the second safety level is higher than the first safety level. In an embodiment of the present application, the second control module further includes a second disabling portion, an input end of the second disabling portion is connected to a disabling control pin of the second controller, an output end of the second disabling portion is connected to a second input