CN115179875B - Reliable control method for automobile door, electric controller and carrier - Google Patents
Reliable control method for automobile door, electric controller and carrier Download PDFInfo
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- CN115179875B CN115179875B CN202210696863.1A CN202210696863A CN115179875B CN 115179875 B CN115179875 B CN 115179875B CN 202210696863 A CN202210696863 A CN 202210696863A CN 115179875 B CN115179875 B CN 115179875B
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- power supply
- automobile
- door
- storage battery
- controllable power
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/28—Arrangements for controlling current
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/531—Doors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses a reliable control method of an automobile door, an electric controller and a carrier, wherein the method comprises the following steps: s1: detecting a wake-up signal, if the wake-up signal is detected, waking up the controllable power supply and driving the gate controller to work; s2: detecting the working voltage amplitude of the storage battery, and if the voltage amplitude of the storage battery has a falling trend, adjusting the output current peak value of the gate controller to enable the automobile gate motor to operate with set power; if the voltage amplitude of the storage battery is no longer dropped, the gate controller is regulated to output according to the set threshold current; s3: when the voltage amplitude of the storage battery is not dropped any more, the control circuit controls the action of the automobile door according to the instruction received by the communication circuit, and if no wake-up signal or instruction signal is detected within a certain time, the enabling signal of the controllable power supply is set low, and the work of the controllable power supply is stopped. The electric control method can reduce standby energy consumption of the automobile door controller and improve reliability of automobile door control.
Description
Technical Field
The invention relates to the field of electric control gating devices of new energy automobiles, in particular to a reliable control method, an electric control system and a carrier of an automobile door.
Background
The electric control system of the new energy automobile door such as buses or buses mainly comprises a door controller (door controller for short), a switch, a wire harness and a motor, and the electric control system drives a screw rod or a belt pulley to realize the functions of opening and closing the door and the like through a driving motor, so that the new energy automobile door electric control system applied to the market at present mainly has the following problems: 1. when the traditional new energy electric automobile door electric control system is in a standby state, the standby current is more than 100mA, and the requirement that the standby current of the automobile door electric control system is less than 10mA by a vehicle factory cannot be met. 2. When the storage battery of the new energy electric automobile is at the lower limit of the working voltage, the input power supply voltage is easy to drop instantly according to the conventional motor control method, and the door cannot be normally opened or closed. 3. The existing vehicle door controller software upgrade has no OTA upgrade function, and maintenance personnel are required to get on the vehicle to update, so that more labor cost is required to be input.
Disclosure of Invention
The invention aims to: the invention aims to provide a reliable control method for an automobile door, which can reduce standby power consumption of an automobile door electric control system and can ensure that the automobile door electric control system works stably when the voltage of an automobile storage battery is low.
The invention further aims to provide an automobile door electric control system and an automobile, wherein the automobile door electric control system and the automobile can implement the method, and can save electric energy and ensure the stable operation of the automobile door.
The technical scheme is as follows: the invention relates to a reliable control method of a vehicle door, which comprises the following steps:
s1: detecting a wake-up signal, if the wake-up signal is detected, waking up the controllable power supply and driving the gate controller to work;
S2: detecting the working voltage amplitude of the storage battery, and if the voltage amplitude of the storage battery has a falling trend, adjusting the output current peak value of the gate controller to enable the automobile gate motor to operate with set power; if the voltage amplitude of the storage battery is no longer dropped, the gate controller is regulated to output according to the set threshold current;
S3: when the voltage amplitude of the storage battery is not dropped any more, the control circuit controls the action of the automobile door according to the instruction received by the communication circuit, and if no wake-up signal or instruction signal is detected within a certain time, the enabling signal of the controllable power supply is set low, and the work of the controllable power supply is stopped.
Further, in the step S2, the output of the gate controller is controlled by a PWM control method, and if the voltage amplitude of the storage battery has a falling trend, the limit value of the duty ratio of the PWM is reduced while the door motor is ensured to operate at the set power; and if the voltage amplitude of the storage battery is not dropped, the PWM duty ratio is increased to a set threshold value.
Further, the method further comprises the steps of: s1.1: when the automobile is detected to be in storage or in the driving process, the enabling signal of the controllable power supply is set low, and the work of the available power supply is stopped.
Further, the method further comprises the steps of: s1.2: when the front side enters a warehouse or the automobile is in a driving process and the state of the automobile door is changed, the automobile door is judged to be faulty, the enabling signal of the controllable power supply is set high, the controllable power supply is awakened to work, and the door controller is driven to process the fault.
Further, the method further comprises the steps of:
S4: if the wake-up signal is detected and the OTA update request is detected, the communication circuit starts to receive OTA data, and the gate controller backs up the control program to a preset backup storage space;
s4.1: checking the received file, and if the received file passes the check, burning the received file into a storage medium of the gate controller;
s4.2: judging whether the program upgrade is successfully completed, and restarting the gate controller program if the upgrade is successful; and if the upgrade fails, the control program backup in the backup storage space is restored to the storage medium of the gate controller.
The invention discloses an automobile door electric control system, which comprises a communication circuit and a control circuit, wherein the communication circuit comprises a communication chip and a conventional power supply for supplying power to the communication chip, the control circuit comprises a door controller, a voltage detection circuit and a controllable power supply, wherein the voltage detection circuit and the controllable power supply are electrically connected with an automobile storage battery, the conventional power supply and the controllable power supply are both electrically connected with the automobile storage battery, the voltage detection circuit is used for detecting the voltage of the automobile storage battery, the communication chip is electrically connected with the controllable power supply, the controllable power supply is also electrically connected with the door controller, the conventional power supply is always kept in a wake-up state, and the controllable power supply wakes up for a preset period of time after receiving a wake-up signal, and is dormant for the rest time.
Furthermore, the communication chip controls connection on-off of the controllable power supply and the automobile storage battery through the discrete device.
Further, the discrete device comprises a MOS tube.
Further, the controllable power supply comprises a DC/DC module and an LDO chip which are connected in sequence, and the LDO chip supplies power for the gate controller.
The vehicle comprises the automobile door electric control system, and the door motor of the automobile is electrically connected with the storage battery of the automobile through the automobile door electric control system.
The beneficial effects are that: compared with the prior art, the invention has the following advantages: 1. when in standby, only the communication circuit is powered, and the standby power consumption is less than 10mA. 2. The power of the motor can be ensured when the voltage of the automobile storage battery is reduced, the normal operation of the motor of the automobile door is ensured, faults are reduced, and the automobile door can be normally opened when the voltage of the automobile storage battery is low. 3. The OTA upgrade of the gate controller can be realized, and when the OTA upgrade is unsuccessful, the control program can be restored to the original version, so that the reliable use of the gate controller is ensured. 4. The adoption of discrete device control reduces the cost of the controller and has lower failure rate compared with a relay.
Drawings
FIG. 1 is a flow chart of a method of reliably controlling an automotive door in accordance with a first embodiment of the present invention;
FIG. 2 is a flow chart of a method of reliably controlling an automotive door in accordance with a second embodiment of the present invention;
fig. 3 is a schematic block diagram of an automotive control system according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, a method for reliably controlling an automobile door according to an embodiment of the present invention includes the steps of:
s1: detecting a wake-up signal, if the wake-up signal is detected, waking up the controllable power supply and driving the gate controller to work;
S2: detecting the working voltage amplitude of the storage battery, and if the voltage amplitude of the storage battery has a falling trend, adjusting the output current peak value of the gate controller to enable the automobile gate motor to operate with set power; if the voltage amplitude of the storage battery is no longer dropped, the gate controller is regulated to output according to the set threshold current;
S3: when the voltage amplitude of the storage battery is not dropped any more, the control circuit controls the action of the automobile door according to the instruction received by the communication circuit, and if no wake-up signal or instruction signal is detected within a certain time, the enabling signal of the controllable power supply is set low, and the work of the controllable power supply is stopped.
According to the technical scheme, when the door action needs to be controlled, the door is awoken to work by the power supply capable of supplying power to the control circuit and the door controller, and the electric energy of the storage battery is converted into the electric energy which is used for driving the control circuit and the door controller. When the controllable power supply is awakened for a certain time each time, a wake-up signal or an instruction signal is not received within the working time of the controllable power supply, the controllable power supply enters a sleep mode, the controllable power supply stops working, only a conventional power supply for supplying power to a communication chip works, and the standby current of the communication chip is about 1uA, so that the standby energy consumption of the door controller can be reduced by the method, the door controller can normally work within 100 mu s of door action, the door controller can meet the requirement that the standby power consumption is less than 10mA, the power consumption of the door controller is reduced, and the requirements of vehicle factories are met.
And because the starting instantaneous current of the motor is larger, when the storage battery of the automobile is in the lower limit of the power supply voltage, the voltage output of the storage battery can be reduced, so that the control circuit and the gate controller cannot work stably, therefore, when the controllable power supply works, the voltage amplitude of the storage battery needs to be monitored, when the voltage amplitude of the storage battery has a descending trend, the output current peak value of the gate controller is reduced, the working voltage is prevented from dropping, the current output of the controllable power supply is recovered after the voltage is stabilized, the control of the automobile door is executed, and the automobile door is prevented from being opened and closed abnormally.
In this embodiment, the output of the gate controller is controlled by the control circuit through the PWM method, and when a decrease trend of the voltage amplitude of the storage battery is detected, the limit value of the duty ratio of the PWM is dynamically reduced while the gate motor is ensured to operate at the set power, so as to prevent the output current peak from being excessively large. And after the voltage amplitude of the storage battery is stable, recovering the duty ratio of the PWM to the set threshold value. In practice, the adjustment is determined by a curve of the threshold range of duty cycle of the PWM of the gate motor, calibrated in advance by experiments, with respect to the operating voltage.
In this embodiment, after a certain period of time after each time the controllable power supply wakes up, if no wake-up signal is detected during the operation period, power supply to the gate controller is stopped. The wake-up signal may be a wake-up frame detected by the communication chip, or an operation instruction signal or a gate status signal directly connected to the controllable power supply.
Referring to fig. 2, with a communication circuit, the control program of the gate controller can be updated in an OTA manner, so that the labor cost of a batch update program is reduced, and the steps are as follows:
S4: if the wake-up signal is detected and the OTA update request is detected, the communication circuit starts to receive OTA data, and the gate controller backs up the control program to a preset backup storage space;
s4.1: checking the received file, and if the received file passes the check, burning the received file into a storage medium of the gate controller;
s4.2: judging whether the program upgrade is successfully completed, and restarting the gate controller program if the upgrade is successful; and if the upgrade fails, the control program backup in the backup storage space is restored to the storage medium of the gate controller.
According to the method, when the program is not successfully updated through OTA, the gate controller can restore the backed-up gate controller control program, so that the reliable use of the gate controller is ensured.
Referring to fig. 3, an automotive door control system according to an embodiment of the present invention includes a communication circuit and a control circuit. The communication circuit comprises a communication chip and a conventional power supply for supplying power to the communication chip, the control circuit comprises a gate controller, a voltage detection circuit and a controllable power supply, the voltage detection circuit is electrically connected with a storage battery of an automobile, and the communication chip is electrically connected with the gate controller. The conventional power supply always works to supply power to the communication chip, the controllable power supply only works for a set time when receiving the wake-up signal, and the rest time does not work.
Because the relay fault rate is higher, the hard wire control signal or the communication chip is electrically connected with the controllable power supply through the discrete device, when the hard wire control signal or the communication chip detects the wake-up frame, the discrete device is controlled to be conducted so as to enable the controllable power supply, and when the communication chip does not detect the wake-up frame within a set time in the working period of the controllable power supply, the discrete device is turned off so as to stop the working of the controllable power supply, and the controllable power supply enters into dormancy. In the embodiment, the MOS tube is selected to control the controllable power supply, the circuit structure is simple, the cost is low, the controllable power supply signal or the communication chip can be enabled to be low through a hard wire in the warehouse-in process or the driving process of the vehicle, the connection between the controllable power supply and the automobile storage battery is cut off, the controllable power supply cannot be powered, the gate controller and the like cannot work, and accidental opening of the door is prevented. Meanwhile, when the door state is detected to change in the running or warehousing process, the fact that the automobile door possibly fails is indicated, at the moment, the controllable power supply is required to be awakened, the door controller is driven to work, the automobile door failure is processed in time, and safety in the running process is further protected. According to the technical scheme, the hardware protection function is increased, and the safety in the driving process is improved.
In this embodiment, the controllable power supply includes a DC/DC module outputting 5V and an LDO (linear voltage regulator) chip outputting 3.3V. The DC/DC module converts the output of the storage battery into 5V direct current, and the LDO chip converts the 5V direct current converted by the DC/DC module into 3.3V direct current for the gate controller.
The vehicle according to the embodiment of the invention is mainly a new energy automobile and comprises the automobile door electric control system, and the door motor and the door controller of the automobile are connected with the power supply of the automobile, namely the storage battery of the automobile through the automobile door electric control system.
Claims (9)
1. The automobile door electric control system is characterized by comprising a communication circuit and a control circuit, wherein the communication circuit comprises a communication chip and a conventional power supply for supplying power to the communication chip, the control circuit comprises a door controller, a voltage detection circuit and a controllable power supply, wherein the voltage detection circuit and the controllable power supply are electrically connected with an automobile storage battery, the voltage detection circuit is used for detecting the voltage of the automobile storage battery, the communication chip is electrically connected with the controllable power supply, the controllable power supply is also electrically connected with the door controller, the conventional power supply is always kept in a wake-up state, and the controllable power supply wakes up for a preset period of time after receiving a wake-up signal, and is dormant for the rest of time;
the control method of the automobile door electric control system comprises the following steps:
s1: detecting a wake-up signal, if the wake-up signal is detected, waking up the controllable power supply and driving the gate controller to work;
S2: detecting the working voltage amplitude of the storage battery, and if the voltage amplitude of the storage battery has a falling trend, adjusting the output current peak value of the gate controller to enable the automobile gate motor to operate with set power; if the voltage amplitude of the storage battery is no longer dropped, the gate controller is regulated to output according to the set threshold current;
S3: when the voltage amplitude of the storage battery is not dropped any more, the control circuit controls the action of the automobile door according to the instruction received by the communication circuit, and if no wake-up signal or instruction signal is detected within a certain time, the enabling signal of the controllable power supply is set low, and the work of the controllable power supply is stopped.
2. The automobile door control system according to claim 1, wherein in the step S2, the output of the door controller is controlled by a PWM control method, and if the voltage amplitude of the storage battery has a falling trend, the limit value of the duty ratio of the PWM is reduced while the operation of the automobile door motor at the set power is ensured; and if the voltage amplitude of the storage battery is not dropped, the PWM duty ratio is increased to a set threshold value.
3. The automotive door control system of claim 1, further comprising the step of:
S1.1: when the automobile is detected to be in storage or in the driving process, the enabling signal of the controllable power supply is set low, and the work of the available power supply is stopped.
4. The automotive door control system of claim 3, further comprising the step of:
S1.2: when the automobile is detected to be in storage or in the driving process and the state of the automobile door is changed, the automobile door is judged to be faulty, the enabling signal of the controllable power supply is set high, the controllable power supply is awakened to work, and the door controller is driven to process the fault.
5. The automotive door control system of claim 1, further comprising the step of:
s4: if the wake-up signal is detected and the OTA update request is detected, the communication circuit starts to receive OTA data, and the gate controller backs up the control program to a preset backup storage space;
s4.1: checking the received file, and if the received file passes the check, burning the received file into a storage medium of the gate controller;
s4.2: judging whether the program upgrade is successfully completed, and restarting the gate controller program if the upgrade is successful; and if the upgrade fails, the control program backup in the backup storage space is restored to the storage medium of the gate controller.
6. The automobile door electric control system according to claim 1, wherein the communication chip controls connection and disconnection of the controllable power supply and the automobile storage battery through a discrete device.
7. The automotive door control system of claim 6, wherein the discrete device comprises a MOS transistor.
8. The automotive door control system of claim 1, wherein the controllable power supply comprises a DC/DC module and an LDO chip connected in sequence, the LDO chip powering the door controller.
9. A vehicle comprising an automotive door control system according to any one of claims 1 to 8, through which a door motor of the vehicle is electrically connected to a battery of the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210696863.1A CN115179875B (en) | 2022-06-20 | 2022-06-20 | Reliable control method for automobile door, electric controller and carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210696863.1A CN115179875B (en) | 2022-06-20 | 2022-06-20 | Reliable control method for automobile door, electric controller and carrier |
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| CN115179875A CN115179875A (en) | 2022-10-14 |
| CN115179875B true CN115179875B (en) | 2024-07-26 |
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| CN202210696863.1A Active CN115179875B (en) | 2022-06-20 | 2022-06-20 | Reliable control method for automobile door, electric controller and carrier |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102324844A (en) * | 2011-09-23 | 2012-01-18 | 科博达技术有限公司 | Microcontroller-controlled voltage stabilization device and voltage stabilization method for vehicle body electronic controller |
| CN106907069A (en) * | 2015-10-12 | 2017-06-30 | 福特环球技术公司 | Without key Vehicular system |
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| EP0744322B1 (en) * | 1995-05-24 | 2003-08-06 | Hitachi, Ltd. | Car electronic control system and method for controlling the same |
| US6967458B1 (en) * | 2002-07-31 | 2005-11-22 | Western Digital Technologies, Inc. | Decreasing spin up time in a disk drive by adjusting a duty cycle of a spindle motor PWM signal to maintain constant average input current |
| JP6675874B2 (en) * | 2012-12-24 | 2020-04-08 | マグナ クロージャーズ インコーポレイテッド | Backup energy source and associated control method for automotive systems |
| CN203920642U (en) * | 2014-06-04 | 2014-11-05 | 华域汽车电动系统有限公司 | There is dormancy and wake-up control circuit that voltage keeps function |
| CN104859565B (en) * | 2014-07-28 | 2017-07-11 | 北汽福田汽车股份有限公司 | A kind of electric power management circuit, method and system |
| CN206926605U (en) * | 2017-06-28 | 2018-01-26 | 北京经纬恒润科技有限公司 | A kind of motor-drive circuit |
| CN110435565B (en) * | 2019-07-02 | 2020-09-25 | 未来汽车科技（深圳）有限公司 | Power supply control circuit and method for automobile instrument, automobile instrument and automobile |
| CN114428629A (en) * | 2022-01-29 | 2022-05-03 | 安徽江淮汽车集团股份有限公司 | OTA (over the air) upgrading method for vehicle-mounted controller |
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2022
- 2022-06-20 CN CN202210696863.1A patent/CN115179875B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324844A (en) * | 2011-09-23 | 2012-01-18 | 科博达技术有限公司 | Microcontroller-controlled voltage stabilization device and voltage stabilization method for vehicle body electronic controller |
| CN106907069A (en) * | 2015-10-12 | 2017-06-30 | 福特环球技术公司 | Without key Vehicular system |
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| CN115179875A (en) | 2022-10-14 |
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