Vehicle door unlocking system and method

Abstract

The invention provides a car door unlocking system and method, and belongs to the technical field of car door automatic unlocking, the car door unlocking system comprises a sensor module, a battery management system, a control module, an alarm module and a door lock module, the sensor module is used for detecting the temperature of a car battery, and the output end of the sensor module is connected with the input end of the battery management system; the output end of the battery management system is connected with the input end of the control module, the output end of the control module is connected with the input end of the alarm module, and the output end of the control module is connected with the input end of the door lock module. During working, the battery management system detects the temperature of the automobile battery through the sensor module. When the battery management system detects that the temperature of the automobile battery is too high through the sensor module, the battery management system outputs a fault diagnosis code to the control module. And the control module gives an alarm through the alarm module and controls the door lock module to automatically unlock. When the automobile battery has an overheating fault, the automobile door is unlocked so that a user can escape from danger, and the personal safety of the user is protected.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic door unlocking, and in particular, relates to a door unlocking system and method. Background Art

[0002] With the development and popularization of new energy vehicles, the safety requirements for new energy vehicles are getting higher and higher. Different from traditional gasoline vehicles, new energy vehicles powered by batteries are fundamentally different in many aspects, and the safety management strategy for new energy vehicles also needs to be re-formulated.

[0003] Chinese patent 103273905A discloses a car door lock control method and system, and its technical solution is: judge the lock state change of each door; when it is judged that a door changes from an unlocked state to a locked state, control all doors to lock; when it is judged that a door changes from a locked state to an unlocked state, control all doors to unlock.

[0004] The prior art does not take into account the safety issues caused by closing the car door when the car battery is overheated, which poses a great hidden danger to the personal safety of the user. Summary of the invention

[0005] The present invention aims to provide a vehicle door unlocking system and method, so as to achieve the technical purpose of unlocking the vehicle door when the vehicle battery is overheated so that the user can escape from danger.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The present invention provides a vehicle door unlocking system, comprising a sensor module, a battery management system, a control module, an alarm module and a door lock module, wherein the sensor module is used to detect the temperature of a vehicle battery, the output end of the sensor module is connected to the input end of the battery management system, the output end of the battery management system is connected to the input end of the control module, the output end of the control module is connected to the input end of the alarm module, and the output end of the control module is connected to the input end of the door lock module.

[0008] The sensor module inputs the temperature information of the automobile battery to the battery management system, the battery management system outputs the fault information to the control module, the control module outputs the alarm instruction to the alarm module, and the control module outputs the unlocking instruction to the door lock module.

[0009] The sensor module adopts a temperature sensor.

[0010] There are at least two temperature sensors.

[0011] The control module adopts a body controller.

[0012] The alarm module includes an instrument screen and a speaker. The output end of the control module is connected to the input end of the instrument screen, and the output end of the control module is connected to the input end of the speaker.

[0013] The door lock module adopts a car intelligent door lock.

[0014] The present invention provides a vehicle door unlocking method:

[0015] Step 1: The battery management system detects the temperature of the car battery through the sensor module.

[0016] Step 2: When the battery management system detects through the sensor module that the temperature of the vehicle battery is too high, the battery management system outputs a fault diagnostic code to the control module.

[0017] Step 3: The control module sounds an alarm through the alarm module and controls the door lock module to automatically unlock.

[0018] In step 2, the battery management system detects the temperature of the vehicle battery through multiple temperature sensors, calculates the average value of the vehicle battery temperature, and then compares the average value of the vehicle battery temperature with the threshold value of the vehicle battery temperature to determine whether the vehicle battery overheating fault occurs.

[0019] The technical effects of the present invention are:

[0020] (1) The present invention protects the personal safety of users when an automobile battery overheats, and the protection strategy of the present invention is simple and effective.

[0021] (2) The present invention includes at least two temperature sensors. The present invention detects the temperature of the automobile battery through multiple temperature sensors, and the detection result is more accurate.

[0022] (3) The present invention notifies the user and automatically unlocks the car door lock when the car battery is overheated, preventing the user from being trapped in the car and protecting the user's personal safety.

[0023] (4) When the battery overheats, the present invention simultaneously issues an alarm to the user through the instrument screen and the speaker, thereby ensuring the user's personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] This specification includes the following drawings, which show the following contents:

[0025] Figure 1 A logical structure block diagram of a vehicle door unlocking system and method of the present invention;

[0026] Figure 1 The markings are: 1. sensor module; 2. battery management system; 3. control module; 4. alarm module; 5. door lock module. DETAILED DESCRIPTION

[0027] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0028] The present invention provides a vehicle door unlocking system, comprising a sensor module 1, a battery management system 2, a control module 3, an alarm module 4 and a door lock module 5, wherein the sensor module 1 is used to detect the temperature of a vehicle battery, the output end of the sensor module 1 is connected to the input end of the battery management system 2, the output end of the battery management system 2 is connected to the input end of the control module, the output end of the control module is connected to the input end of the alarm module, and the output end of the control module is connected to the input end of the door lock module.

[0029] The sensor module 1 inputs the temperature information of the vehicle battery to the battery management system 2, the battery management system 2 outputs the fault information to the control module, the control module outputs the alarm instruction to the alarm module, and the control module outputs the unlocking instruction to the door lock module.

[0030] The sensor module 1 uses a temperature sensor.

[0031] There are at least two temperature sensors.

[0032] The control module adopts the body controller.

[0033] The alarm module comprises an instrument screen and a loudspeaker. The output end of the control module is connected to the input end of the instrument screen, and the output end of the control module is connected to the input end of the loudspeaker.

[0034] The door lock module adopts car intelligent door lock.

[0035] The present invention provides a vehicle door unlocking method:

[0036] Step 1: The battery management system 2 detects the temperature of the vehicle battery through the sensor module 1.

[0037] Step 2: When the battery management system 2 detects through the sensor module 1 that the temperature of the vehicle battery is too high, the battery management system 2 outputs a fault diagnosis code to the control module.

[0038] Step 3: The control module sounds an alarm through the alarm module and controls the door lock module to automatically unlock.

[0039] In step 2, the battery management system 2 detects the temperature of the vehicle battery through multiple temperature sensors, calculates the average value of the vehicle battery temperature, and then compares the average value of the vehicle battery temperature with the threshold value of the vehicle battery temperature to determine whether a vehicle battery overheating fault occurs.

[0040] A vehicle door unlocking system and method of the present invention are described in detail below.

[0041] The present invention discloses a car door unlocking system, which includes a sensor module 1, a battery management system 2, a control module, an alarm module and a door lock module, wherein the sensor module 1 uses a temperature sensor to detect the temperature of a car battery, and performs emergency operations to protect user safety by real-time monitoring of the temperature of the car battery when the temperature of the car battery exceeds a threshold value of the car battery temperature. The present invention includes at least two temperature sensors, and the present invention detects the temperature of the car battery through multiple temperature sensors, so that the detection result is more accurate.

[0042] The battery management system (BMS) is used to detect the temperature of the car battery through multiple temperature sensors, and calculate the average value of the car battery temperature, and then compare the average value of the car battery temperature with the threshold value of the car battery temperature. When the average value of the car battery temperature is greater than the threshold value of the car battery temperature, the battery management system 2 reports the fault information of the car battery temperature being too high to the control module. Specifically, the battery management system 2 uploads the fault diagnostic code 0x14 of the car battery overheating to the control module through the CAN bus. When the average value of the car battery temperature is not greater than the threshold value of the car battery temperature, the battery management system 2 repeatedly detects the temperature of the car battery through the sensor module 1. The car battery in the embodiment of the present invention adopts a lithium iron phosphate battery, and the threshold value of the lithium iron phosphate battery temperature is 65°C.

[0043] The control module uses a body controller, which is used to control the alarm module to alarm and control the door lock module to automatically unlock after receiving the fault diagnosis code of the car battery overheating uploaded by the battery management system 2. The present invention prompts the user and automatically unlocks the car door lock when the car battery is overheated, preventing the user from being trapped in the car and protecting the user's personal safety. The specific model of the body controller in the embodiment of the present invention is Yuntu YTM32B1L.

[0044] The alarm module includes an instrument screen and a speaker. When the temperature of the car battery is too high, the instrument screen will remind the user through an alarm icon indicating that the battery temperature is too high, and the speaker will emit an alarm tone. When the battery is in danger of overheating, the present invention will simultaneously warn the user through the instrument screen and the speaker, thereby ensuring the user's personal safety.

[0045] The door lock module adopts a car smart door lock. In the present invention, the door lock module is a controlled unit. When the car battery overheats, in order to prevent casualties caused by the inability to unlock the car smart door lock, the control module in the present invention controls the door lock module to unlock when receiving information about the car battery overheating failure. When the driver reduces the speed of the car, the person can open the door and escape from danger.

[0046] The output ends of multiple temperature sensors are respectively connected to the input ends of the battery management system 2 through the I2C bus, the output end of the battery management system 2 is connected to the input end of the body controller through the CAN bus, the output end of the body controller is connected to the input end of the instrument screen through the CAN bus, the output end of the body controller is connected to the input end of the speaker through the audio cable, and the output end of the body controller is connected to the input end of the car smart door lock through the CAN bus.

[0047] A vehicle door unlocking method of the present invention is:

[0048] The battery management system 2 detects the temperature of the vehicle battery through the sensor module 1 . Specifically, a plurality of temperature sensors monitor the temperature of the vehicle battery in real time and input the temperature information of the battery into the battery management system 2 .

[0049] The battery management system 2 calculates the average value of the vehicle battery temperature and compares the average value of the vehicle battery temperature with the threshold value of the vehicle battery temperature. When the average value of the vehicle battery temperature is higher than the threshold value of the vehicle battery temperature, the battery management system 2 uploads the fault diagnosis code to the control module. Specifically, the battery management system 2 uploads the fault diagnosis code 0x14 of the vehicle battery overheating to the control module via the CAN bus. If the average value of the vehicle battery temperature is not greater than the threshold value of the vehicle battery temperature, the battery management system 2 repeatedly detects the temperature of the vehicle battery through the sensor module 1.

[0050] After receiving the fault diagnosis code input by the battery management system 2, the control module alarms through the alarm module and controls the door lock module to automatically unlock. Specifically, the control module sends an alarm command to the instrument screen and the speaker respectively, the instrument screen will prompt the user through the alarm icon of the battery temperature being too high, the speaker will emit an alarm tone, and the car smart door lock will automatically unlock.

[0051] The present invention protects the personal safety of users when an overheating failure occurs in the automobile battery, and the protection strategy of the present invention is simple and effective.

[0052] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A vehicle door unlocking system, characterized in that: It includes a sensor module, a battery management system, a control module, an alarm module and a door lock module. The sensor module is used to detect the temperature of the vehicle battery. The output end of the sensor module is connected to the input end of the battery management system. The output end of the battery management system is connected to the input end of the control module. The output end of the control module is connected to the input end of the alarm module. The output end of the control module is connected to the input end of the door lock module.

2. A vehicle door unlocking system as claimed in claim 1, characterized in that: The sensor module inputs the temperature information of the automobile battery to the battery management system, the battery management system outputs the fault information to the control module, the control module outputs the alarm instruction to the alarm module, and the control module outputs the unlocking instruction to the door lock module.

3. A vehicle door unlocking system as claimed in claim 1, characterized in that: The sensor module adopts a temperature sensor.

4. A vehicle door unlocking system as claimed in claim 3, characterized in that: There are at least two temperature sensors.

5. A vehicle door unlocking system as claimed in claim 1, characterized in that: The control module adopts a body controller.

6. A vehicle door unlocking system as claimed in claim 1, characterized in that: The alarm module includes an instrument screen and a speaker. The output end of the control module is connected to the input end of the instrument screen, and the output end of the control module is connected to the input end of the speaker.

7. A vehicle door unlocking system as claimed in claim 1, characterized in that: The door lock module adopts a car intelligent door lock.

8. A vehicle door unlocking method according to any one of claims 1 to 7, characterized in that: Step 1: The battery management system detects the temperature of the car battery through the sensor module; Step 2: When the battery management system detects that the temperature of the vehicle battery is too high through the sensor module, the battery management system outputs a fault diagnosis code to the control module; Step 3: The control module sounds an alarm through the alarm module and controls the door lock module to automatically unlock.

9. A vehicle door unlocking method as claimed in claim 8, characterized in that: In step 2, the battery management system detects the temperature of the vehicle battery through multiple temperature sensors, calculates the average value of the vehicle battery temperature, and then compares the average value of the vehicle battery temperature with the threshold value of the vehicle battery temperature to determine whether the vehicle battery overheating fault occurs.

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