CN114233119A - Control system and vehicle of electric vehicle door lock - Google Patents
Control system and vehicle of electric vehicle door lock Download PDFInfo
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- CN114233119A CN114233119A CN202111575111.1A CN202111575111A CN114233119A CN 114233119 A CN114233119 A CN 114233119A CN 202111575111 A CN202111575111 A CN 202111575111A CN 114233119 A CN114233119 A CN 114233119A
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- 238000000034 method Methods 0.000 claims description 47
- 230000008569 process Effects 0.000 claims description 47
- 230000001960 triggered effect Effects 0.000 claims description 11
- 230000009191 jumping Effects 0.000 claims description 10
- 230000003578 releasing effect Effects 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 25
- 230000009471 action Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/06—Electrical using rotary motors
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/54—Electrical circuits
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/54—Electrical circuits
- E05B81/56—Control of actuators
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/54—Electrical circuits
- E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0853—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load specially adapted for motors rotating in both directions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0856—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load characterised by the protection measure taken
- H02H7/0858—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load characterised by the protection measure taken by reversing, cycling or reducing the power supply to the motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention provides a control system of an electric vehicle door lock and a vehicle, wherein the control system comprises: the door lock comprises a door lock motor and a door lock state switch, wherein the door lock motor is internally provided with a door lock motor reset switch, and the door lock state switch comprises a second state switch and a third state switch; the controller receives signals sent by the second state switch, the third state switch and the door lock motor reset switch, and receives the current value of a loop where the door lock motor is located; the controller sends a motor control instruction to the door lock motor according to the received signal and the current value, the door lock motor executes the motor control instruction, the function protection is carried out on the electric door lock on the basis that the hardware structure is not changed and the cost is not increased, software optimization is carried out on the controller, the robustness of the system is effectively improved, and the controller and the door lock can work stably under different working conditions and have a self-protection function.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a control system of an electric vehicle door lock and a vehicle.
Background
With the development of automobile electromotion, an automobile door lock is also changed from a traditional mechanical type to an electric type, and a door lock system is one of the systems which are used most frequently by users, so that the requirements on door opening and closing user perception and function robustness related to the electric function of the automobile door lock system are high, and therefore, it is particularly necessary to develop a control system of an electric automobile door lock, wherein a controller and an actuator can stably work under different working conditions and have a self-protection function.
Disclosure of Invention
Based on the problems, the invention provides a control system of an electric vehicle door lock and a vehicle, which perform function protection on the electric vehicle door lock and perform software optimization on a controller on the basis of not changing a hardware structure and not increasing cost, effectively improve the robustness of the system, ensure that the controller and the door lock can stably work under different working conditions and have a self-protection function.
The invention provides a control system of an electric vehicle door lock, which comprises:
the door lock comprises a door lock motor and a door lock state switch, wherein the door lock motor is internally provided with a door lock motor reset switch, and the door lock state switch comprises a second state switch and a third state switch;
the controller receives signals sent by the second state switch, the third state switch and the door lock motor reset switch, and receives the current value of a loop where the door lock motor is located;
the controller sends a motor control instruction to the door lock motor according to the received signal and the current value, and the door lock motor executes the motor control instruction;
the controller obtains the door lock state from the truth table formed by the second state switch and the third state switch, and the door lock state comprises the following steps: the switching of the door lock state triggers the jumping of an output signal of a door lock state switch; the controller controls the positive and negative rotation of the door lock motor according to the jumping of the output signal of the door lock state switch, so that the door lock is actuated, and the door lock actuation comprises the following steps: attracting and releasing, and resetting the motor; the controller monitors whether the door lock is in an abnormal working condition or not, and takes protective measures if the door lock is in the abnormal working condition.
In the truth table, when the values of the second state switch and the third state switch are both 1, the door lock is in the full-lock state, when the value of the second state switch is 0, the value of the third state switch is 1, the door lock is in the micro-open state, and when the values of the second state switch and the third state switch are both 0, the door lock is in the full-open state.
In addition, the controller sends a motor control command to the door lock motor according to the received signal and the current value, and the motor control command comprises the following steps:
the controller periodically collects a current value, if the detected current value is larger than a first preset current value and the duration time exceeds a third preset time value, the controller judges that the current value is in an overload state, and the controller sends a stop instruction to the door lock motor.
In addition, when the door lock is in a full-open state to a slightly-open state, the controller detects the jump of the signal and sends a reverse attracting instruction;
when the door lock is in a slightly-opened state to a fully-locked state, the controller sends a braking instruction and then sends a forward rotation instruction.
In addition, if the controller detects that the second state switch is invalid, the controller controls the door lock motor to be continuously attracted to the motor locked state and then controls the door lock motor to be reversely rotated to the reset state.
In addition, if the controller detects that the third state switch is invalid, the controller controls the door lock motor to be continuously attracted to the motor locked state and then controls the door lock motor to be reversely rotated to the reset state.
In addition, the controller sends out a reset instruction after receiving a signal of finishing the suction or release;
if the controller does not detect the jumping of the reset switch signal of the door lock motor within the reset maximum working time, the controller controls the door lock motor to reset to a locked-rotor state, and the controller sends a reverse rotation signal again after the motor stops so that the motor reaches the reset state.
In addition, when the controller is initially electrified, the current value, the door lock state switch and the door lock motor reset switch are detected, and the door lock state is judged according to the door lock state switch;
if the door lock motor reset switch is in a reset state, judging that the door lock motor is normal and the door lock is normal in function; otherwise, controlling the door lock motor to perform forward rotation reset or reverse rotation reset according to the states of the second state switch and the third state switch and the door lock state, and preparing for electric release and electric suction.
In addition, the electric pull-in process includes: the controller periodically collects all switch signals, if the signal jump of the third state switch is detected, the controller converts the door lock state from full open to micro open, the controller sends a pull-in instruction again, the door lock motor running time is timed, the current value is sampled, if the signal jump of the second state switch, the door lock motor running time is smaller than a second preset time value, the current value is smaller than a second preset current value, and the overload protection function is not triggered, the pull-in is judged to be successful.
Further, the electrokinetic release process includes: the controller periodically detects whether an unlocking instruction is input, if so, the controller controls the door lock motor to rotate forwards, and simultaneously calculates the operation time of the door lock motor and samples the current value, if the signal of the third state switch jumps, the operation time of the door lock motor is less than a first preset time value, the current value is less than a third preset current value, and the overload protection function is not triggered, and the success of the electric release process is judged.
The invention also provides a vehicle, which adopts the control system of the electric vehicle door lock.
The control system of the electric vehicle door lock provided by the invention has the advantages that the electric vehicle door lock is subjected to functional protection on the basis of not changing a hardware structure and not increasing the cost, the controller is subjected to software optimization, the robustness of the system is effectively improved, and the controller and the door lock can stably work under different working conditions and have a self-protection function.
Drawings
Fig. 1 is a block diagram of a control system for a door lock of a vehicle according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a door lock state and an operation flow of a door lock motor in a door lock power release process according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating a door lock state and an operation flow of a door lock motor in an electric door lock actuation process according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating overload protection control of a door lock motor according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a motor protection process after the second status switch of the door lock motor fails according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a motor protection process after a third status switch of a door lock motor fails according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a motor protection process after a reset switch of a door lock motor fails according to an embodiment of the present invention;
FIG. 8 is a flowchart illustrating a process for power-up initialization of a controller according to an embodiment of the present invention;
fig. 9 is a flowchart illustrating an electric engaging process of the controller-controlled door lock according to an embodiment of the present invention;
FIG. 10 is a flowchart illustrating an electrical release process for the controller to control the door lock according to an embodiment of the present invention;
fig. 11 is a truth table of the door lock status switch and the door lock status according to an embodiment of the present invention.
Detailed Description
The present invention is described in further detail below with reference to specific embodiments and the attached drawings. It is intended that the present invention not be limited to the particular embodiments disclosed, but that the present invention be limited only by the appended claims.
Referring to fig. 1, the present invention provides a control system for a door lock of an electric vehicle, including:
the door lock comprises a door lock motor and a door lock state switch, wherein the door lock motor is internally provided with a door lock motor reset switch, and the door lock state switch comprises a second state switch and a third state switch;
the controller receives signals sent by the second state switch, the third state switch and the door lock motor reset switch, and receives the current value of a loop where the door lock motor is located;
the controller sends a motor control instruction to the door lock motor according to the received signal and the current value, and the door lock motor executes the motor control instruction;
the controller obtains the door lock state from the truth table formed by the second state switch and the third state switch, and the door lock state comprises the following steps: the switching of the door lock state triggers the jumping of an output signal of a door lock state switch; the controller controls the positive and negative rotation of the door lock motor according to the jumping of the output signal of the door lock state switch, so that the door lock is actuated, and the door lock actuation comprises the following steps: attracting and releasing, and resetting the motor; the controller monitors whether the door lock is in an abnormal working condition or not, and takes protective measures if the door lock is in the abnormal working condition.
The second state switch and the third state switch send a second switch signal and a third switch signal to the controller, and the reset switch in fig. 1 is a door lock motor reset switch. The controller is connected with the CAN bus. The motor is referred to herein as a door lock motor. Since there is a door lock motor reset switch as the first state switch, the other two switches are referred to as the second state switch and the third state switch, respectively.
Referring to fig. 11, a truth table formed by the second state switch and the third state switch corresponds to a full-lock state, a slightly-open state and a full-open state of the door lock states in fig. 11.
Fig. 1 is a block diagram of a control system, the arrow direction is a signal transmission direction, and input signals of a controller include a second state switch signal of a door lock and a current value of a loop where a door lock motor is located, and the second state switch signal of the door lock and a reset switch signal of the door lock motor. The controller outputs a control signal for controlling the positive and negative rotation of the motor, and the control signal is divided into four actions of positive rotation, negative rotation, braking, stopping and the like. And the controller CAN process the detected switch signal and send the processed switch signal to the CAN bus of the whole vehicle for other modules to use.
Fig. 2 is an electric release process of the control system, when the door lock is in a full-lock state, i.e., a first door lock state, the door lock motor is in a reset state, the release process of the door lock refers to a process that the door lock state is changed from the full-lock state (the first door lock state) to a slightly-open state (a second door lock state) and enters a full-open state (a third door lock state), the motor is released from the reset state in a forward rotation manner until the door lock reaches the full-open state (the third door lock state), and then the motor is stopped by braking and is reset in a reverse rotation manner to the initial reset state.
The attraction process of the control system is as shown in fig. 3, under the action of an external force, for example, when a passenger or an electric door actuator pushes a door lock mechanism, a third state switch is triggered, the door lock state can enter a second door lock state from the third door lock state, at the moment, the controller detects the jumping of a switch signal, sends a reverse attraction instruction, controls the motor to rotate reversely, when the door lock state enters the first door lock state from the second door lock state, the controller sends a braking instruction to stop the motor, and sends a forward rotation instruction to reversely reset the motor to a reset state.
The invention provides a control system of an electric vehicle door lock, which performs function protection on the electric door lock on the basis of not changing a hardware structure and not increasing cost, performs software optimization on a controller, effectively improves the robustness of the system, ensures that the controller and the door lock can stably work under different working conditions and has a self-protection function.
Referring to fig. 11, in one embodiment, in the truth table, when the values of the second state switch and the third state switch are both 1, the door lock is in the full-lock state (first door lock state), when the values of the second state switch and the third state switch are 0 and 1, the door lock is in the micro-open state (second door lock state), and when the values of the second state switch and the third state switch are both 0, the door lock is in the full-open state (third door lock state).
Referring to fig. 4, in one embodiment, the controller sending a motor control command to the door lock motor according to the received signal and the current value includes:
the controller periodically collects a current value, if the detected current value is larger than a first preset current value and the duration time exceeds a third preset time value, the controller judges that the current value is in an overload state, and the controller sends a stop instruction to the door lock motor.
In the embodiment, an overload protection function is added to the motor, firstly, in an initialization setting process, a maximum threshold value of working current is set as a first preset current value a1, the maximum duration time exceeding the first preset current value is a third preset time value T3, the controller periodically collects the current value flowing through the door lock motor and records the current value as a, if the current value a is greater than a1 at a certain moment and the duration time exceeds T3, the door lock is considered to be in an overload state, the controller enters an overload protection mode, and a stop signal is sent to stop the motor. After the motor stops, the energy in the circuit is gradually reduced, and when the current value a periodically collected by the controller is smaller than A1 and returns to normal, the controller controls the motor to return to a normal working state. The motor of the door lock is protected by adding the overload protection function.
In one embodiment, when the door lock is in a full-open state to a slightly-open state, the controller detects the jump of a signal and sends a reverse attracting instruction;
when the door lock is in a slightly-opened state to a fully-locked state, the controller sends a braking instruction and then sends a forward rotation instruction. The embodiment describes the pick-up process of the control system as shown in fig. 3.
As shown in fig. 5, in one embodiment, if the controller detects that the second state switch is disabled, the controller controls the door lock motor to continuously pull in to the motor locked state, and then controls the door lock motor to reversely rotate to the reset state.
The protection process of the motor after the second state switch of the door lock fails: when the second state switch fails, the suction process of the door lock cannot be normally stopped, the motor is continuously sucked to a motor locked-rotor state at the moment, the overload protection function is triggered, the controller enters the second state switch failure protection state, and the controller sends a reverse signal to control the motor to be reversely rotated to a reset state. The controller detects that the second state switch is invalid and provides a protection function for the second state switch, so that the safety of the motor is guaranteed.
As shown in fig. 6, in one embodiment, if the controller detects that the third state switch is disabled, the controller controls the door lock motor to continuously pull in to the motor locked state, and then controls the door lock motor to reversely rotate to the reset state.
The protection process of the motor after the failure of the third state switch of the door lock motor is as follows: when the third state switch fails, the releasing process of the door lock cannot be normally stopped, the motor is continuously sucked to a motor locked-rotor state, the overload protection function is triggered, the controller enters the third switch failure protection state, and the controller sends a reverse signal to control the motor to be in a reset state in a reverse rotation mode.
Referring to fig. 7, in one embodiment, the controller sends out a reset command after receiving a signal of completion of the pull-in or release;
if the controller does not detect the jumping of the reset switch signal of the door lock motor within the reset maximum working time, the controller controls the door lock motor to reset to a locked-rotor state, and the controller sends a reverse rotation signal again after the motor stops so that the motor reaches the reset state.
The protection process of the motor after the reset switch of the door lock motor fails: if the reset switch signal has no jump all the time in the maximum reset working time, the motor can not return to the reset state, and the next release or suction action can not be carried out. At the moment, the controller enters a neutral switch failure protection state, the controller controls the motor to reset to a locked rotor state, current failure protection is generated to enable the motor to stop forcibly, the controller sends a reverse signal again after the motor stops, the motor is controlled to move reversely under a calibration voltage through PWM, the movement time is T4, and at the moment, the motor can reach the reset state. The function of the whole system can be recovered to normal.
Referring to fig. 8, in one embodiment, when the controller is initially powered on, the current value, the door lock state switch and the door lock motor reset switch are detected, and the door lock state is determined according to the door lock state switch;
if the door lock motor reset switch is in a reset state, judging that the door lock motor is normal and the door lock is normal in function; otherwise, controlling the door lock motor to perform forward rotation reset or reverse rotation reset according to the states of the second state switch and the third state switch and the door lock state, and preparing for electric release and electric suction.
The control system initialization process is as follows: when the controller is initially electrified, the current value, the door lock state switch and the door lock motor reset switch are detected when the controller is initially electrified, and the door lock state is judged according to the door lock state switch. Firstly, if the reset switch is in a reset state, the motor is reset normally, and the door lock functions normally. Otherwise, the states of the second state switch and the third state switch are judged one by one, the corresponding states of the door lock and the motor are judged according to the comparison of the truth table, and the controller needs to correspondingly control the motor to carry out forward rotation reset or reverse rotation reset action. The initialization process is completed, and preparation is made for the next electric releasing and electric attracting process.
Referring to fig. 9, in one embodiment thereof, the electric pull-in process includes: the controller periodically collects all switch signals, if the signal jump of the third state switch is detected, the controller converts the door lock state from full open to micro open, the controller sends a pull-in instruction again, the door lock motor running time is timed, the current value is sampled, if the signal jump of the second state switch, the door lock motor running time is smaller than a second preset time value, the current value is smaller than a second preset current value, and the overload protection function is not triggered, the pull-in is judged to be successful.
The electric suction process comprises the following steps: in the initialization process, firstly, the maximum operation time of a motor in the attraction process is set as a second preset time value T2, the working current threshold range is set to be 0-A2 (a second preset current value), the default door lock state is a third door lock state, in the attraction control main program, a controller can periodically collect all switching signals, when the jump of the third door lock state signal is detected, the current third door lock state is switched to the second door lock state by the controller, the controller sends out an attraction instruction again, and meanwhile, the operation time timing and current sampling of the motor are carried out, the timing time is T2, and the current value is a 2. When the second door lock state switch jumps, T2 is still smaller than T2, a2 is smaller than A2 in the action process of the motor and the overload protection function is not triggered, the pull-in process is considered to be successful, otherwise, the pull-in process is considered to be failed. After the suction process is successful, the lock reaches a first door lock state, the controller sends a stop instruction to stop the motor, and after the motor stops, the controller sends a reset instruction again to return the motor to an initial state to prepare for the next electric release action. If the suction process fails, the controller sends a reset instruction to enable the motor to rotate forwardly and reset, so that the motor returns to an initial state to prepare for the next suction action.
Referring to fig. 10, in one embodiment thereof, the power release process includes: the controller periodically detects whether an unlocking instruction is input, if so, the controller controls the door lock motor to rotate forwards, and simultaneously calculates the operation time of the door lock motor and samples the current value, if the signal of the third state switch jumps, the operation time of the door lock motor is less than a first preset time value, the current value is less than a third preset current value, and the overload protection function is not triggered, and the success of the electric release process is judged.
In the initialization process, firstly, the maximum operation time of the motor in the electric release process is set as T1 (a first preset time value), the working current threshold range is set as 0 to A3 (a third preset current value), and the default door lock state is the first door lock state or the second door lock state, specifically, which of the first door lock state and the second door lock state needs to be determined according to a truth table. In the main program of the electric release process, the controller can periodically detect whether a user unlocking instruction is input, if not, the controller is still in an initialization state, if so, the controller sends the unlocking instruction to control the actuator motor to rotate forwards, and meanwhile, the motor running time is timed and the working current is sampled, wherein the timed time is t1, and the working current is a 3. When the third door lock state switch jumps, T1 is still smaller than T1, A3 is smaller than A3 in the motor action process and the overload protection function is not triggered, the electric release process is considered to be successful, otherwise, the release process fails. After the release is successful, the lock reaches a third door lock state, the controller sends a stop instruction to stop the motor, and after the motor stops, the controller sends a reset instruction again to enable the motor to reversely return to the initial state to prepare for the next suction action. If the releasing process fails, the controller sends a reset command to enable the motor to reversely reset so as to prepare for the next releasing action.
The invention further provides a vehicle, and the control system of the electric vehicle door lock is adopted.
On the basis of not changing a hardware structure and not increasing cost, the electric door lock is subjected to function protection, software optimization is performed on the controller, the robustness of the system is effectively improved, and the controller and the door lock can stably work under different working conditions and have a self-protection function.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.
Claims (11)
1. A control system for an electric vehicle door lock, comprising:
the door lock comprises a door lock motor and a door lock state switch, wherein the door lock motor is internally provided with a door lock motor reset switch, and the door lock state switch comprises a second state switch and a third state switch;
the controller receives signals sent by the second state switch, the third state switch and the door lock motor reset switch, and receives the current value of a loop where the door lock motor is located;
the controller sends a motor control instruction to the door lock motor according to the received signal and the current value, and the door lock motor executes the motor control instruction;
the controller obtains the door lock state from the truth table formed by the second state switch and the third state switch, and the door lock state comprises the following steps: the switching of the door lock state triggers the jumping of an output signal of a door lock state switch; the controller controls the positive and negative rotation of the door lock motor according to the jumping of the output signal of the door lock state switch, so that the door lock is actuated, and the door lock actuation comprises the following steps: attracting and releasing, and resetting the motor; the controller monitors whether the door lock is in an abnormal working condition or not, and takes protective measures if the door lock is in the abnormal working condition.
2. The control system of an electric vehicle door lock according to claim 1,
in the truth table, when the values of the second state switch and the third state switch are both 1, the door lock is in a full-locking state, when the value of the second state switch is 0, the value of the third state switch is 1, the door lock is in a slightly-opening state, and when the values of the second state switch and the third state switch are both 0, the door lock is in a full-opening state.
3. The control system of an electric vehicle door lock according to claim 1,
the controller sends out motor control command to the lock motor according to received signal and current value and includes:
the controller periodically collects a current value, if the detected current value is larger than a first preset current value and the duration time exceeds a third preset time value, the controller judges that the current value is in an overload state, and the controller sends a stop instruction to the door lock motor.
4. The control system of an electric vehicle door lock according to claim 1,
when the door lock is in a full-open state to a slightly-open state, the controller detects the jump of a signal and sends a reverse attracting instruction;
when the door lock is in a slightly-opened state to a fully-locked state, the controller sends a braking instruction and then sends a forward rotation instruction.
5. The control system of an electric vehicle door lock according to claim 1,
if the controller detects that the second state switch is invalid, the controller controls the door lock motor to continuously suck until the motor is in a locked state, and then controls the door lock motor to reversely rotate to a reset state.
6. The control system of an electric vehicle door lock according to claim 1,
if the controller detects that the third state switch is invalid, the controller controls the door lock motor to continuously suck until the motor is in a locked state, and then controls the door lock motor to reversely rotate to a reset state.
7. The control system of an electric vehicle door lock according to claim 1,
the controller sends out a reset instruction after receiving a signal of finishing the attraction or the release;
if the controller does not detect the jumping of the reset switch signal of the door lock motor within the reset maximum working time, the controller controls the door lock motor to reset to a locked-rotor state, and the controller sends a reverse rotation signal again after the motor stops so that the motor reaches the reset state.
8. The control system of an electric vehicle door lock according to claim 1,
when the controller is initially powered on, detecting a current value, a door lock state switch and a door lock motor reset switch, and judging a door lock state according to the door lock state switch;
if the door lock motor reset switch is in a reset state, judging that the door lock motor is normal and the door lock is normal in function; otherwise, controlling the door lock motor to perform forward rotation reset or reverse rotation reset according to the states of the second state switch and the third state switch and the door lock state, and preparing for electric release and electric suction.
9. The control system for electric vehicle door lock according to claim 8,
the electric suction process comprises the following steps: the controller periodically collects all switch signals, if the signal jump of the third state switch is detected, the controller converts the door lock state from full open to micro open, the controller sends a pull-in instruction again, the door lock motor running time is timed, the current value is sampled, if the signal jump of the second state switch, the door lock motor running time is smaller than a second preset time value, the current value is smaller than a second preset current value, and the overload protection function is not triggered, the pull-in is judged to be successful.
10. The control system for electric vehicle door lock according to claim 8,
the motorized release process includes: the controller periodically detects whether an unlocking instruction is input, if so, the controller controls the door lock motor to rotate forwards, and simultaneously calculates the operation time of the door lock motor and samples the current value, if the signal of the third state switch jumps, the operation time of the door lock motor is less than a first preset time value, the current value is less than a third preset current value, and the overload protection function is not triggered, and the success of the electric release process is judged.
11. A vehicle characterized by employing the control system of an electric vehicle door lock according to any one of claims 1 to 10.
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| CN202111575111.1A CN114233119A (en) | 2021-12-21 | 2021-12-21 | Control system and vehicle of electric vehicle door lock |
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| CN202111575111.1A CN114233119A (en) | 2021-12-21 | 2021-12-21 | Control system and vehicle of electric vehicle door lock |
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