CN216269102U - Standby power supply device for electric vehicle door and electronic equipment - Google Patents
Standby power supply device for electric vehicle door and electronic equipment Download PDFInfo
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- CN216269102U CN216269102U CN202122397208.XU CN202122397208U CN216269102U CN 216269102 U CN216269102 U CN 216269102U CN 202122397208 U CN202122397208 U CN 202122397208U CN 216269102 U CN216269102 U CN 216269102U
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Abstract
The application provides a standby power supply device for an electric vehicle door and electronic equipment. The device is used for supplying power for the electric vehicle door under the condition of power failure of the whole vehicle, and comprises: the electronic switch is electrically connected with the vehicle door controller; the controller is electrically connected with the electronic switch, is used for being electrically connected with the whole vehicle CAN, receives a collision signal and a loop voltage signal from the whole vehicle CAN, and drives the electronic switch to be closed under the condition that the collision signal is received from the whole vehicle CAN and the loop voltage is lower than a preset voltage, wherein the loop voltage is the voltage on a loop between a vehicle storage battery and the vehicle door controller; and the standby power supply is electrically connected with the electronic switch and the controller respectively. The scheme can also ensure the normal closing and opening of the vehicle door under the condition of the power failure of the whole vehicle. In case of an accident, the safety of the passengers is ensured. When the vehicle is in collision and is powered off, the vehicle door controller is automatically powered on, so that the vehicle door is convenient for people to open, and the safety of the vehicle is improved.
Description
Technical Field
The application relates to the field of vehicles, in particular to a standby power supply device for an electric vehicle door and electronic equipment.
Background
As the automobile inventory increases, the frequency of car accidents also increases dramatically. After a high-speed collision of the vehicle, most of the storage batteries are arranged in the front engine room, and the circuit of the storage batteries is damaged in an extreme case.
Meanwhile, automobiles are being transformed from mechanical to electric, and electric doors are arranged on luxury automobile models and the like nowadays. The storage battery of the vehicle is generally arranged at a front or rear power compartment, after high-speed collision occurs, the generated energy is large, the head and the tail of the vehicle are most easily impacted, so that the storage battery or a power supply circuit is damaged, the vehicle door cannot be supplied with power, a controller of the vehicle needs to use low-voltage power supply of the storage battery, and no other standby power supply exists. In a car equipped with an electric door, it is impossible or difficult for passengers to open the door from the inside to escape, and it takes much time for outside people to open the car.
SUMMERY OF THE UTILITY MODEL
The application mainly aims to provide a standby power supply device for an electric vehicle door and electronic equipment, and aims to solve the problem that power cannot be supplied to the electric vehicle door under the condition of power failure of a whole vehicle in the prior art.
In order to achieve the above object, according to one aspect of the present application, there is provided a power supply device for standby power supply of a power door, for supplying power to the power door in case of power failure of a whole vehicle, comprising: the electronic switch is electrically connected with the vehicle door controller; the controller is electrically connected with the electronic switch, is used for being electrically connected with a whole vehicle CAN, receives a collision signal and a loop voltage signal from the whole vehicle CAN, and drives the electronic switch to be closed under the condition that the collision signal is received from the whole vehicle CAN and the loop voltage is lower than a preset voltage, wherein the loop voltage is the voltage on a loop between a vehicle storage battery and the vehicle door controller; and the standby power supply is electrically connected with the electronic switch and the controller respectively.
Optionally, the controller includes a comparator having a first input terminal for inputting the loop voltage, a second input terminal for inputting the predetermined voltage, and an output terminal for outputting a first level when the loop voltage is less than the predetermined voltage, and outputting a second level when the loop voltage is greater than or equal to the predetermined voltage.
Optionally, the controller further includes an and gate and a power supply switch, the and gate has a first input end, a second input end and an output end, the first input end of the and gate is electrically connected to the output end of the comparator, the second input end of the and gate is electrically connected to the entire vehicle CAN, the output end of the and gate is electrically connected to the input end of the power supply switch, and the output end of the power supply switch is electrically connected to the electronic switch.
Optionally, the first level is a low level, and the second level is a high level.
Optionally, the apparatus further comprises: and the mechanical switch is electrically connected with the standby power supply.
Optionally, the apparatus further comprises: and the alarm is electrically connected with the controller and sends out an alarm signal under the condition that the residual electric quantity of the standby power supply is lower than the preset electric quantity.
Optionally, the alarm is an indicator light.
Optionally, the electronic switch is one of: relay, BJT, MOS pipe.
Optionally, the controller is one of: ARM, FPGA, MSP singlechip.
According to another aspect of the application, an electronic device is provided, which comprises any one of the electric vehicle door standby power supply devices.
Use the technical scheme of this application, among the electronic equipment, the controller receives collision signal and return circuit voltage signal from whole car CAN, receive collision signal and return circuit voltage under the circumstances that return circuit voltage is less than predetermined voltage from whole car CAN, it is less to have collided and the voltage on the return circuit between vehicle battery and the door controller promptly, under the circumstances that CAN't supply power for the door controller, controller drive electronic switch is closed, because electronic switch's one end is connected with stand-by power supply electricity, the other end is connected with the door controller electricity, under the circumstances that electronic switch is closed, stand-by power supply just CAN supply power for the door controller, so that the door controller normally works, guarantee the normal opening and the closing of electric door. That is, even in the case of power failure of the entire vehicle, normal closing and opening of the door can be ensured. In case of an accident, the safety of the passengers is ensured. When the vehicle is in collision and is powered off, the vehicle door controller is automatically powered on, so that the vehicle door is conveniently opened by personnel, the escape time of the personnel in the vehicle is shortened, and the safety of the vehicle is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a schematic diagram of an electric vehicle door backup power supply according to an embodiment of the present application;
fig. 2 shows a complete vehicle layout according to an embodiment of the application.
Wherein the figures include the following reference numerals:
10. an electronic switch; 20. a controller; 21. a comparator; 22. an AND gate; 23. a power supply switch; 30. a standby power supply; 40. a mechanical switch; 50. an alarm.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As described in the background of the invention, in the prior art, power cannot be supplied to the electric vehicle door in the case of power failure of the entire vehicle. For solving above under the circumstances of whole car outage, can't be for the problem of electric door power supply, the embodiment of this application provides a reserve power supply unit of electric door and electronic equipment.
An exemplary embodiment of the present application provides a power supply device for standby power supply of an electric vehicle door, which is used for supplying power to the electric vehicle door in case of power failure of a whole vehicle, as shown in fig. 1, and includes:
an electronic switch 10 for electrically connecting with a door controller;
a controller 20 electrically connected to the electronic switch 10, configured to be electrically connected to a vehicle body CAN, receive a collision signal and a loop voltage signal from the vehicle body CAN, and drive the electronic switch 10 to close when the collision signal is received from the vehicle body CAN and the loop voltage is lower than a predetermined voltage, where the loop voltage is a voltage on a loop between a vehicle battery and the vehicle door controller;
and a backup power source 30 electrically connected to the electronic switch 10 and the controller 20, respectively.
Specifically, the function of the above-mentioned door controller is to control the opening or closing of the door, etc., that is, when the door controller is powered on, the control of the electric door can be realized, and when the whole vehicle is powered off, the door controller is naturally powered off and cannot control the electric door.
In the scheme, the controller receives a collision signal and a loop voltage signal from the whole vehicle CAN, under the condition that the collision signal is received from the whole vehicle CAN and the loop voltage is lower than the preset voltage, namely, the collision occurs and the voltage on the loop between the vehicle storage battery and the vehicle door controller is small, and under the condition that the power cannot be supplied to the vehicle door controller, the controller drives the electronic switch to be closed. That is, even in the case of power failure of the entire vehicle, normal closing and opening of the door can be ensured. In case of an accident, the safety of the passengers is ensured. When the vehicle is in collision and is powered off, the vehicle door controller is automatically powered on, so that the vehicle door is conveniently opened by personnel, the escape time of the personnel in the vehicle is shortened, and the safety of the vehicle is improved.
In one embodiment of the present application, as shown in fig. 1, the controller 20 includes a comparator 21, the comparator 21 has a first input terminal for inputting the loop voltage, a second input terminal for inputting the predetermined voltage, and an output terminal, the output terminal outputs a first level when the loop voltage is less than the predetermined voltage, and outputs a second level when the loop voltage is greater than or equal to the predetermined voltage. I.e. it can be determined from the output of the comparator 21 whether the loop voltage is less than a predetermined voltage.
In an embodiment of the present application, as shown in fig. 1, the controller further includes an and gate 22 and a power supply switch 23, the and gate 22 has a first input end, a second input end and an output end, the first input end of the and gate 22 is electrically connected to the output end of the comparator 21, the second input end of the and gate 22 is electrically connected to the entire vehicle CAN, the output end of the and gate 22 is electrically connected to the input end of the power supply switch 23, and the output end of the power supply switch 23 is electrically connected to the electronic switch.
In an embodiment of the present application, the first level is a low level, and the second level is a high level. As shown in fig. 1, the first input terminal of the comparator 21 is used for inputting the loop voltage, the second input terminal is used for inputting the predetermined voltage, when the loop voltage is less than the predetermined voltage, the output terminal of the comparator 21 outputs a low level, that is, the first input terminal of the and gate 22 inputs a low level, when the second input terminal of the and gate inputs the collision signal, the second input terminal of the and gate inputs a high level, the output terminal of the and gate outputs a low level, the low level is input into the power supply switch to drive the power supply switch to be closed, and when the power supply switch is closed, the power is supplied to the electronic switch, specifically, when the electronic switch is a relay, the relay is driven to be closed. Conversely, when the loop voltage is greater than or equal to the predetermined voltage, the output terminal outputs a second level, that is, the first input terminal of the and gate 22 inputs a high level, when the second input terminal of the and gate inputs the collision signal, the second input terminal of the and gate inputs a high level, the output terminal of the and gate outputs a high level, the high level is input into the power supply switch, so that the power supply switch is turned off, and when the power supply switch is turned off, the power is no longer supplied to the electronic switch, that is, the electronic switch is no longer turned on.
In another alternative embodiment of the present application, the first level is a high level, and the second level is a low level. As shown in fig. 1, the first input terminal of the comparator 21 is used for inputting the loop voltage, the second input terminal is used for inputting the predetermined voltage, when the loop voltage is less than the predetermined voltage, the output terminal of the comparator 21 outputs a high level, that is, the first input terminal of the and gate 22 inputs a high level, when the second input terminal of the and gate inputs the collision signal, the second input terminal of the and gate inputs a high level, the output terminal of the and gate outputs a high level, the high level is input into the power supply switch to drive the power supply switch to be closed, and when the power supply switch is closed, the power is supplied to the electronic switch, specifically, when the electronic switch is a relay, the relay is driven to be closed. Conversely, when the loop voltage is greater than or equal to the predetermined voltage, the output terminal outputs a second level, that is, the first input terminal of the and gate 22 inputs a low level, when the second input terminal of the and gate inputs the collision signal, the second input terminal of the and gate inputs a high level, the output terminal of the and gate outputs a low level, and the low level is input into the power supply switch so that the power supply switch is turned off, and when the power supply switch is turned off, the power is no longer supplied to the electronic switch, that is, the electronic switch is no longer turned on.
It should be noted that the comparator, the and gate and the power supply switch may exist independently from the controller, and the comparator, the and gate and the power supply switch are also connected as in fig. 1, except that the output terminal of the power supply switch may be connected to a predetermined pin of the controller to control the level of the predetermined pin of the controller, and then the predetermined pin of the controller drives the electronic switch to be turned on and off.
In an embodiment of the present application, as shown in fig. 1, the apparatus further includes: and a mechanical switch 40 electrically connected to the backup power supply 30. I.e. the mechanical switch can be manually activated by the passenger when the automatic power supply cannot be triggered. I.e. the passenger presses the manual button in fig. 1 to achieve power supply.
In an embodiment of the present application, as shown in fig. 1, the mechanical switch 40 is one of the following: a toggle switch, a toggle switch and a key switch.
In an embodiment of the present application, as shown in fig. 1, the apparatus further includes: and an alarm 50 electrically connected to the controller 20, for generating an alarm signal when the remaining power of the backup power supply 30 is lower than a predetermined power. To alert the user to replace the backup power source.
In a specific embodiment, the alarm is an indicator light. And under the condition that the residual electric quantity is lower than the preset electric quantity, the indicator lamp is turned on.
In a specific embodiment, the electronic switch is one of: relay, BJT, MOS pipe. Of course, other types of electronic switches than relays, BJTs, MOS transistors may be selected.
In a specific embodiment, the controller is one of: ARM, FPGA, MSP singlechip. Of course, other types of controllers besides ARM, FPGA and MSP single-chip microcomputer can be selected.
According to another exemplary embodiment of the present application, there is provided an electronic apparatus including any one of the above-described power door backup power supply apparatuses. In the electronic equipment, the controller receives a collision signal and a loop voltage signal from the whole vehicle CAN, under the condition that the collision signal is received from the whole vehicle CAN and the loop voltage is lower than a preset voltage, namely, the collision occurs and the voltage on the loop between the vehicle storage battery and the vehicle door controller is small, under the condition that the power cannot be supplied to the vehicle door controller, the controller drives the electronic switch to be closed, because one end of the electronic switch is electrically connected with the standby power supply and the other end of the electronic switch is electrically connected with the vehicle door controller, under the condition that the electronic switch is closed, the standby power supply CAN supply power to the vehicle door controller, so that the vehicle door controller normally works, and the normal opening and closing of the electric vehicle door are ensured. That is, even in the case of power failure of the entire vehicle, normal closing and opening of the door can be ensured. In case of an accident, the safety of the passengers is ensured. When the vehicle is in collision and is powered off, the vehicle door controller is automatically powered on, so that the vehicle door is conveniently opened by personnel, the escape time of the personnel in the vehicle is shortened, and the safety of the vehicle is improved.
Examples
The present embodiment relates to a specific backup power supply scheme for electric vehicle doors, as shown in fig. 1 and 2.
When the vehicle is collided to cause the power failure of the whole vehicle, the wiring harness of the vehicle body is long, and most of reasons are that the circuit from the storage battery to the vehicle door controller is damaged or the storage battery is damaged. The design therefore adds a back-up power supply to the door controller after this condition has occurred.
An emergency power supply device (namely an electric vehicle door standby power supply device) is newly added into a loop between a common vehicle storage battery and a vehicle door controller. The positive and negative poles of the device are connected into a power supply loop of the vehicle door controller and close to the vehicle door end.
The collision power supply device is designed with two power supply modes of automatic power supply and manual power supply, as shown in fig. 1.
The dotted line part is automatically supplied with power, and mainly comprises a relay and a microcontroller module. The microcontroller is connected to the CAN network of the whole vehicle, mainly receives collision signals sent by ECUs such as VCUs, BMSs and the like, and has a relay driving function.
The dotted line II is partially used for active power supply and comprises a manual button and a switch. The power switch may be manually turned on by the passenger when the automatic power supply fails to trigger.
The device mainly comprises three parts, including a power supply part, an automatic power supply part and a manual power supply part.
The power supply part is as follows:
the small-sized power supply can supply power to the vehicle door controller in a short time. While the microcontroller is continuously powered. And its supply voltage needs to be the same as the vehicle battery voltage.
And a wire harness connecting the respective electronic devices.
The automatic power supply part is as follows:
and the relay is used for providing a switch for connecting the storage battery into the power supply loop for the automatic power supply part.
And the microcontroller has the functions of receiving CAN signals, detecting loop voltage, detecting and alarming power supply electric quantity and driving a relay.
And the electric quantity indicator lamp is turned on after the microcontroller detects low electric quantity.
The manual power supply part is as follows:
manual buttons, and controllable switches.
And the switch is connected with the button and provides a switch for connecting the storage battery into the power supply loop for the manual power supply part.
The microcontroller has the following functions:
receiving a CAN signal: the collision detection device is connected to the CAN network of the whole vehicle, has the function of receiving signals, and continuously receives specific collision signals sent by the ECU with the collision detection function, such as VCU, BMS, ABM and the like.
Loop voltage detection: the power supply circuit is connected with a vehicle storage battery-door controller power supply circuit and can detect whether the power supply voltage exists in the circuit.
Driving a relay: and the relay is connected with the switch and can provide closed driving voltage for the relay.
Detecting and alarming the electric quantity of the power supply: the electric quantity of the small power supply can be estimated, and when the electric quantity is lower than 20%, the electric quantity indicator lamp is driven to be on, so that the power supply is reminded to be replaced.
The automatic power supply judgment logic is as follows: the microcontroller CAN comprehensively judge the collision signal of the CAN of the whole vehicle and the voltage of the loop. And the relay is driven to be closed to trigger automatic power supply only when the collision signal of the CAN of the whole vehicle is received and the voltage of the loop is low.
The judgment logic of manual power supply is as follows: when the vehicle is in collision, the ECU cuts off the power supply without sending a collision signal, and the automatic power supply logic is not triggered at the moment. Manual power supply is required at this time.
The design structure of the vehicle needs to be dominated by human safety. When a collision is transmitted, the safety of the passenger compartment is highest, and after the collision occurs, the vehicle occupant may have been injured, resulting in inconvenience of movement. While taking into account the flexibility of use. The device is therefore mounted below the passenger seat.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) the utility model provides a reserve power supply unit of electric door, the controller receives collision signal and return circuit voltage signal from whole car CAN, under the condition that receives collision signal and return circuit voltage and be less than predetermined voltage from whole car CAN, it is less to have taken place the voltage on the return circuit between collision and vehicle battery and the door controller promptly, CAN't be for under the condition of door controller power supply, controller drive electronic switch is closed, because electronic switch's one end is connected with stand-by power supply electricity, the other end is connected with the door controller electricity, under the closed condition of electronic switch, stand-by power supply just CAN supply power for the door controller, so that the door controller normally works, guarantee the normal opening and the closing of electric door. That is, even in the case of power failure of the entire vehicle, normal closing and opening of the door can be ensured. In case of an accident, the safety of the passengers is ensured. When the vehicle is in collision and is powered off, the vehicle door controller is automatically powered on, so that the vehicle door is conveniently opened by personnel, the escape time of the personnel in the vehicle is shortened, and the safety of the vehicle is improved.
2) The utility model provides an electronic equipment, among the electronic equipment, the controller receives collision signal and return circuit voltage signal from whole car CAN, under the condition that receives collision signal and return circuit voltage and be less than predetermined voltage from whole car CAN, it is less promptly to have taken place the voltage on the return circuit between collision and vehicle battery and the door controller, CAN't be for under the condition of door controller power supply, controller drive electronic switch is closed, because electronic switch's one end is connected with stand-by power supply electricity, the other end is connected with the door controller electricity, under the closed condition of electronic switch, stand-by power supply just CAN supply power for the door controller, so that the door controller normally works, guarantee electric door's normal opening and closing. That is, even in the case of power failure of the entire vehicle, normal closing and opening of the door can be ensured. In case of an accident, the safety of the passengers is ensured. When the vehicle is in collision and is powered off, the vehicle door controller is automatically powered on, so that the vehicle door is conveniently opened by personnel, the escape time of the personnel in the vehicle is shortened, and the safety of the vehicle is improved.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a reserve power supply unit of electric door, its characterized in that for under the circumstances of whole car outage, for electric door power supply, include:
the electronic switch is electrically connected with the vehicle door controller;
the controller is electrically connected with the electronic switch, is used for being electrically connected with a whole vehicle CAN, receives a collision signal and a loop voltage signal from the whole vehicle CAN, and drives the electronic switch to be closed under the condition that the collision signal is received from the whole vehicle CAN and the loop voltage is lower than a preset voltage, wherein the loop voltage is the voltage on a loop between a vehicle storage battery and the vehicle door controller;
and the standby power supply is electrically connected with the electronic switch and the controller respectively.
2. The apparatus of claim 1, wherein the controller comprises a comparator having a first input terminal for inputting the loop voltage, a second input terminal for inputting the predetermined voltage, and an output terminal for outputting a first level if the loop voltage is less than the predetermined voltage and outputting a second level if the loop voltage is greater than or equal to the predetermined voltage.
3. The device of claim 2, wherein the controller further comprises an and gate and a power supply switch, the and gate having a first input terminal, a second input terminal and an output terminal, the first input terminal of the and gate being electrically connected to the output terminal of the comparator, the second input terminal of the and gate being electrically connected to the vehicle CAN, the output terminal of the and gate being electrically connected to the input terminal of the power supply switch, the output terminal of the power supply switch being electrically connected to the electronic switch.
4. The apparatus of claim 2, wherein the first level is a low level and the second level is a high level.
5. The apparatus of claim 1, further comprising:
and the mechanical switch is electrically connected with the standby power supply.
6. The apparatus of claim 1, further comprising:
and the alarm is electrically connected with the controller and sends out an alarm signal under the condition that the residual electric quantity of the standby power supply is lower than the preset electric quantity.
7. The device of claim 6, wherein the alarm is an indicator light.
8. The apparatus of any one of claims 1 to 7, wherein the electronic switch is one of:
relay, BJT, MOS pipe.
9. The apparatus of any one of claims 1 to 7, wherein the controller is one of:
ARM, FPGA, MSP singlechip.
10. An electronic device characterized by comprising the electric vehicle door backup power supply apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397208.XU CN216269102U (en) | 2021-09-30 | 2021-09-30 | Standby power supply device for electric vehicle door and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397208.XU CN216269102U (en) | 2021-09-30 | 2021-09-30 | Standby power supply device for electric vehicle door and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216269102U true CN216269102U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122397208.XU Active CN216269102U (en) | 2021-09-30 | 2021-09-30 | Standby power supply device for electric vehicle door and electronic equipment |
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| Country | Link |
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| CN (1) | CN216269102U (en) |
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2021
- 2021-09-30 CN CN202122397208.XU patent/CN216269102U/en active Active
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