CN210133012U - Collision protection system and vehicle - Google Patents
Collision protection system and vehicle Download PDFInfo
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- CN210133012U CN210133012U CN201920804750.2U CN201920804750U CN210133012U CN 210133012 U CN210133012 U CN 210133012U CN 201920804750 U CN201920804750 U CN 201920804750U CN 210133012 U CN210133012 U CN 210133012U
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Abstract
The utility model provides a collision protection system and vehicle, the second control circuit at the firing signal direct control power battery unit place that sends through air bag reaches the purpose of cutting off power battery unit output high voltage electricity fast when the collision takes place, simultaneously, accomplishes multiple protection through battery management system and vehicle controller, thereby prevents second control circuit takes place the short circuit or the electric leakage, ensures that passenger and rescue personnel in the car can not take place the high-voltage electric shock and cause the casualties.
Description
Technical Field
The utility model relates to an electric automobile technical field particularly, relates to a collision protection system and vehicle.
Background
With the increasing sales of electric vehicles and the importance of users on the safety performance of electric vehicles, the safety of electric vehicles, especially the safety performance after collision, is very important. The pure electric vehicle takes the power battery as a high-voltage energy storage device, and needs to cut off high-voltage output in time after the vehicle collision happens, so that passengers and rescue workers in the vehicle can be prevented from getting high-voltage electric shock and causing casualties.
In the current collision power-off protection system of the electric automobile, most of the battery management systems cut off a high-voltage relay connected with a power battery by receiving an ignition signal and a collision signal sent by an airbag and a control command of a vehicle controller, and cut off high-voltage output.
Due to the reliability check of the collision signal and the delay of the hard-wire electrical signal transmission, a high-voltage relay command is sent after the battery management system receives the collision signal sent by the safety airbag, a certain time delay exists, so that a high-voltage output circuit of the battery system cannot be disconnected at the fastest speed after the vehicle collision occurs, and passengers and rescue workers in the vehicle can be injured secondarily.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the embodiments of the present invention is to provide a collision protection system and a vehicle to solve the above problems.
The embodiment of the utility model provides a collision protection system, include: the safety airbag control system comprises a power supply, an airbag control unit, a power battery unit, a first relay, a second relay and a third relay; the first relay and the second relay are connected in parallel and then are connected in series with the power supply and the third relay to form a first control loop; the power battery unit, the first relay and the second relay are connected in series to form a second control loop; one end of the third relay is electrically connected with the safety airbag control unit, and the other end of the third relay is grounded to form a third control loop;
the safety airbag control unit is used for controlling and outputting an ignition signal, when the level of the ignition signal is low level, the third relay is closed, and when the level of the ignition signal is high level, the third relay is opened;
the power supply is used for supplying power to the first relay and the second relay when the third relay is closed, and stopping supplying power to the first relay and the second relay when the third relay is disconnected;
and the power battery unit is used for outputting high voltage to provide electric energy for the vehicle when the first relay and the second relay are closed, and stopping outputting the high voltage when the first relay and/or the second relay are disconnected.
Further, the airbag control unit is also configured to signal a crash, and the system further comprises:
and one end of the vehicle controller is in communication connection with the airbag control unit and is used for receiving a collision signal sent by the airbag control unit and generating and sending a control command according to the collision signal.
Further, the first control loop further comprises:
the battery management system is in communication connection with the vehicle controller, one end of the battery management system is electrically connected with the power supply, the other end of the battery management system is electrically connected with the first relay and the second relay respectively, and the battery management system is used for receiving a control command sent by the vehicle controller and controlling the first relay and the second relay to be switched on or switched off according to the control command.
Further, the first control loop further comprises:
the battery management system is electrically connected with the safety airbag control unit, one end of the battery management system is electrically connected with the power supply, the other end of the battery management system is electrically connected with the first relay and the second relay respectively, the battery management system is used for receiving an ignition signal sent by the safety airbag control unit, and the first relay and the second relay are controlled to be switched on or switched off through the ignition signal.
Further, the first relay comprises a first control terminal, the second relay comprises a second control terminal, and the third relay comprises a third input terminal and a third output terminal;
the third relay passes through the third input with the power is connected, first relay passes through first control end respectively with the third output of third relay and the power is connected, the second relay passes through the second control end respectively with the third output of third relay and the power is connected to form first control circuit, first control circuit is used for controlling second control circuit exports high-tension electricity or stops to export high-tension electricity.
Furthermore, the third relay comprises a third control end, one end of the third control end is connected with the airbag control unit, and the other end of the third control end is grounded to form a third control loop, and the third control loop is used for controlling the on-off of the first control loop.
Further, the first relay further comprises a first input end and a first output end, and the second relay further comprises a second input end and a second output end;
and one end of the power battery unit is connected with the first input end, and the other end of the power battery unit is connected with the second input end so as to form the second control loop, and the second control loop is used for controlling the power battery unit to output high voltage electricity or stop outputting high voltage electricity.
Further, the third relay is a normally closed relay.
The embodiment of the utility model provides a still provide a vehicle, including foretell collision protection system.
Further, the vehicle also comprises a driving device connected with the power battery unit, and the driving device is used for providing kinetic energy for the vehicle.
The utility model provides a collision protection system and vehicle, the second control circuit at the firing signal direct control power battery unit place that sends through air bag reaches the purpose of cutting off power battery unit output high voltage electricity fast when the collision takes place, simultaneously, accomplishes multiple protection through battery management system and vehicle controller, thereby prevents second control circuit takes place the short circuit or the electric leakage, ensures that passenger and rescue personnel in the car can not take place the high-voltage electric shock and cause the casualties.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is understood that the following drawings depict only some embodiments of the invention and are therefore not to be considered limiting of its scope, for the person skilled in the art will be able to derive from them other related drawings without inventive faculty.
Fig. 1 is one of schematic diagrams of a collision protection system according to an embodiment of the present invention.
Fig. 2 is a second schematic diagram of a collision protection system according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a collision protection system according to an embodiment of the present invention.
Fig. 4 is a circuit diagram of a vehicle according to an embodiment of the present invention.
Icon: 1-a vehicle; 10-a collision protection system; 11-a first control loop; 12-a second control loop; 13-a third control loop; 100-a first relay; 200-a second relay; 300-a third relay; 400-power battery unit; 500-an airbag control unit; 600-a power supply; 700-a vehicle controller; 800-a battery management system; 20-driving means.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "upper" and "lower" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, an embodiment of the present invention provides a collision protection system 10, including: a power supply 600, an airbag control unit 500, a power battery unit 400, a first relay 100, a second relay 200, and a third relay 300; the first relay 100 and the second relay 200 are connected in parallel and then are connected in series with the power supply 600 and the third relay 300 to form a first control loop 11; the power battery unit 400, the first relay 100 and the second relay 200 are connected in series to form a second control loop 12; one end of the third relay 300 is electrically connected to the airbag control unit 500, and the other end is grounded, thereby forming a third control circuit 13.
The airbag control unit 500 is configured to control to output an ignition signal, and when the level of the ignition signal is a low level, the third relay 300 is closed, and when the level of the ignition signal is a high level, the third relay 300 is opened.
The power supply 600 is configured to supply power to the first relay 100 and the second relay 200 when the third relay 300 is closed, and stop supplying power to the first relay 100 and the second relay 200 when the third relay 300 is open.
The power battery unit 400 is configured to output high voltage power to provide electric energy for the vehicle when the first relay 100 and the second relay 200 are closed, and stop outputting high voltage power when the first relay 100 and/or the second relay 200 are opened.
Specifically, in the embodiment of the present invention, the power supply 600 is a 12V battery, and the type of the specific power supply 600 can be selected according to actual requirements, which is not limited herein.
Meanwhile, please refer to fig. 2, in the embodiment of the present invention, the airbag control unit 500 is further configured to send a collision signal, the system further includes a vehicle controller 700(VCU), one end of the vehicle controller 700 is in communication connection with the airbag control unit 500 through a Controller Area Network (CAN), and is configured to receive the collision signal sent by the airbag control unit 500, and generate and send a control command according to the collision signal.
In the embodiment of the present invention, still include battery management system 800, battery management system 800 with vehicle controller 700 communication connection, just battery management system 800 one end with power 600 electricity is connected, the other end respectively with first relay 100 with second relay 200 electricity is connected, battery management system 800 is used for receiving the control command that vehicle controller 700 sent, according to control command control first relay 100 with second relay 200 is closed or is broken off.
After receiving the collision signal from the airbag control unit 500, the vehicle controller 700 determines a process based on the collision signal and sends a control command to the battery management system 800. The detailed process can refer to the prior art and is not described herein.
Meanwhile, the battery management system 800 is further connected to the airbag control unit 500, one end of the battery management system 800 is connected to the power supply 600, and the other end of the battery management system 800 is electrically connected to the first relay 100 and the second relay 200, and the battery management system 800 is configured to receive an ignition signal sent by the airbag control unit 500, and control the first relay 100 and the second relay 200 to be turned off or turned on by the ignition signal.
The embodiment of the utility model provides, battery management system 800 with vehicle controller 700 still provides duplicate protection, when the vehicle bumps, air bag control unit 500 sends collision signal extremely through the CAN network vehicle controller 700, vehicle controller 700 basis collision signal sends control command extremely through the CAN network battery management system 800, battery management system 800 is according to control command, control first relay 100 with the control end of second relay 200 makes first relay 100 with the switch of second relay 200 becomes the off-state by the closed state, second control circuit 12 becomes the circuit break by the route, power battery unit 400 stops to output high-voltage electricity.
Meanwhile, when the vehicle collides, after the battery management system 800 detects that the ignition signal of the airbag control unit 500 is changed from low level to high level, the battery management system 800 controls the control terminals of the first relay 100 and the second relay 200, so that the switches of the first relay 100 and the second relay 200 are changed from closed state to open state, the second control circuit 12 is changed from open state to closed state, and the power battery unit 400 stops outputting high voltage electricity.
It should be noted that the embodiment of the present invention provides a relay, which includes an input end, an output end and a control end, and when there is voltage at both ends of the control end, that is, when the control end is conducted, the input end and the output end of the relay are conducted, and the current flows from the input end to the output end, and the control end is usually a coil, and through the operation of supplying power or cutting off the power to the coil, the relay is controlled to be closed or opened.
Referring to fig. 3, in the embodiment of the present invention, the first relay 100 includes a first control terminal, the second relay 200 includes a second control terminal, and the third relay 300 includes a third input terminal and a third output terminal.
The first control loop 11 specifically includes: the third relay 300 is connected to the power supply 600 through the third input terminal, the first relay 100 is connected to the third output terminal of the third relay 300 and the power supply 600 through the first control terminal, the second relay 200 is connected to the third output terminal of the third relay 300 and the power supply 600 through the second control terminal, so as to form a first control loop 11, and the first control loop 11 is used for controlling the second control loop 12 to output high voltage electricity or stop outputting high voltage electricity.
The third relay 300 includes a third control end, one end of the third control end is connected to the airbag control unit 500, and the other end of the third control end is grounded to form the third control loop 13, and the third control loop 13 is configured to control on/off of the first control loop 11.
Further, the first relay 100 further includes a first input terminal and a first output terminal, and the second relay 200 further includes a second input terminal and a second output terminal.
One end of the power battery unit 400 is connected to the first input end, and the other end of the power battery unit 400 is connected to the second input end, so as to form the second control loop 12, and the second control loop 12 is used for controlling the power battery unit 400 to output high voltage electricity or stop outputting high voltage electricity.
When the vehicle runs safely and no collision occurs, the airbag ignition signal is at a low level, the third relay 300 is a normally closed relay, and therefore, at this time, the switch of the third relay 300 is in a closed state, the power supply 600 supplies power to the control ends of the first relay 100 and the second relay 200 through the third relay 300, so that the switches of the first relay 100 and the second relay 200 are closed, the second control loop 12 is a passage, and the power battery unit 400 outputs high voltage to provide kinetic energy for the vehicle.
When a vehicle collides, the airbag ignition signal changes from low level to high level, the switch of the third relay 300 changes from closed state to open state, the power supply 600 cannot supply power to the control terminals of the first relay 100 and the second relay 200 through the third relay 300, so that the switch of the first relay 100 and the second relay 200 changes from closed state to open state, the second control loop 12 changes from open state to closed state, and the power battery unit 400 stops outputting high voltage power to provide kinetic energy for the vehicle.
As can be seen from the above-mentioned solution, when the airbag control unit 500 changes from low level to high level and the third relay 300 is turned off, the power battery unit 400 cannot output high voltage power by disconnecting the two-stage control circuit, and a secondary accident caused by disconnection or leakage of the second control circuit 12 in which the power battery unit 400 is located can be prevented without logical judgment by the vehicle controller 700.
Referring to fig. 4, an embodiment of the present invention further provides a vehicle including the above-mentioned collision protection system 10. The vehicle further comprises a driving device 20 connected with the power battery unit 400, wherein the driving device 20 is used for providing kinetic energy for the vehicle.
The vehicle incorporates the same structure and advantageous effects as the collision protection system 10 in the above-described embodiment. The structure and advantageous effects of the collision protection system 10 have been described in detail in the foregoing embodiments, and are not described in detail herein.
To sum up, the utility model provides a collision protection system 10 and vehicle reaches the purpose that cuts off power battery unit 400 output high voltage electricity fast when the collision takes place through the second control loop 12 at the firing signal direct control power battery unit 400 place that air bag sent, simultaneously, accomplishes multiple protection through battery management system 800 and vehicle controller 700, thereby prevents second control loop 12 takes place short circuit or electric leakage, ensures that passenger and rescue personnel in the car can not take place high-voltage electric shock and cause the casualties.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A crash protection system, comprising: the safety airbag control system comprises a power supply, an airbag control unit, a power battery unit, a first relay, a second relay and a third relay; the first relay and the second relay are connected in parallel and then are connected in series with the power supply and the third relay to form a first control loop; the power battery unit, the first relay and the second relay are connected in series to form a second control loop; one end of the third relay is electrically connected with the safety airbag control unit, and the other end of the third relay is grounded to form a third control loop;
the safety airbag control unit is used for controlling and outputting an ignition signal, when the level of the ignition signal is low level, the third relay is closed, and when the level of the ignition signal is high level, the third relay is opened;
the power supply is used for supplying power to the first relay and the second relay when the third relay is closed, and stopping supplying power to the first relay and the second relay when the third relay is disconnected;
and the power battery unit is used for outputting high voltage to provide electric energy for the vehicle when the first relay and the second relay are closed, and stopping outputting the high voltage when the first relay and/or the second relay are disconnected.
2. The crash protection system of claim 1 wherein said airbag control unit is further configured to signal a crash, said system further comprising:
and one end of the vehicle controller is in communication connection with the airbag control unit and is used for receiving a collision signal sent by the airbag control unit and generating and sending a control command according to the collision signal.
3. The crash protection system of claim 2, wherein said first control loop further comprises:
the battery management system is in communication connection with the vehicle controller, one end of the battery management system is electrically connected with the power supply, the other end of the battery management system is electrically connected with the first relay and the second relay respectively, and the battery management system is used for receiving a control command sent by the vehicle controller and controlling the first relay and the second relay to be switched on or switched off according to the control command.
4. The crash protection system of claim 1, wherein said first control loop further comprises:
the battery management system is electrically connected with the safety airbag control unit, one end of the battery management system is electrically connected with the power supply, the other end of the battery management system is electrically connected with the first relay and the second relay respectively, the battery management system is used for receiving an ignition signal sent by the safety airbag control unit, and the first relay and the second relay are controlled to be switched on or switched off through the ignition signal.
5. The crash protection system of claim 1, wherein said first relay comprises a first control terminal, said second relay comprises a second control terminal, and a third relay comprises a third input terminal and a third output terminal;
the third relay passes through the third input with the power is connected, first relay passes through first control end respectively with the third output of third relay and the power is connected, the second relay passes through the second control end respectively with the third output of third relay and the power is connected to form first control circuit, first control circuit is used for controlling second control circuit exports high-tension electricity or stops to export high-tension electricity.
6. The crash protection system of claim 1, wherein said third relay comprises a third control terminal, one end of said third control terminal is connected to said airbag control unit, and the other end of said third control terminal is grounded to form said third control loop, and said third control loop is used for controlling the on/off of said first control loop.
7. The crash protection system of claim 1, wherein said first relay further comprises a first input and a first output, said second relay further comprises a second input and a second output;
and one end of the power battery unit is connected with the first input end, and the other end of the power battery unit is connected with the second input end so as to form the second control loop, and the second control loop is used for controlling the power battery unit to output high voltage electricity or stop outputting high voltage electricity.
8. The crash protection system of any one of claims 1-7, wherein said third relay is a normally closed relay.
9. A vehicle, characterized in that it comprises a collision protection system according to any one of claims 1-8.
10. The vehicle of claim 9, further comprising a drive device coupled to the power cell unit, the drive device configured to provide kinetic energy to the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804750.2U CN210133012U (en) | 2019-05-30 | 2019-05-30 | Collision protection system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804750.2U CN210133012U (en) | 2019-05-30 | 2019-05-30 | Collision protection system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210133012U true CN210133012U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920804750.2U Expired - Fee Related CN210133012U (en) | 2019-05-30 | 2019-05-30 | Collision protection system and vehicle |
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| CN (1) | CN210133012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112810449A (en) * | 2021-01-04 | 2021-05-18 | 宝能(西安)汽车研究院有限公司 | High-voltage power-off system for vehicle and vehicle |
-
2019
- 2019-05-30 CN CN201920804750.2U patent/CN210133012U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112810449A (en) * | 2021-01-04 | 2021-05-18 | 宝能(西安)汽车研究院有限公司 | High-voltage power-off system for vehicle and vehicle |
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| CF01 | Termination of patent right due to non-payment of annual fee |