CN112606792A - Ignition strategy for a side airbag of a vehicle, airbag and vehicle - Google Patents
Ignition strategy for a side airbag of a vehicle, airbag and vehicle Download PDFInfo
- Publication number
- CN112606792A CN112606792A CN202011480743.5A CN202011480743A CN112606792A CN 112606792 A CN112606792 A CN 112606792A CN 202011480743 A CN202011480743 A CN 202011480743A CN 112606792 A CN112606792 A CN 112606792A
- Authority
- CN
- China
- Prior art keywords
- gas
- ignition
- airbag
- side airbag
- vehicle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
- B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0136—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
- B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
- B60R2021/2648—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder comprising a plurality of combustion chambers or sub-chambers
Abstract
The application discloses a side air bag's ignition strategy, air bag and vehicle for vehicle, side air bag's ignition strategy include: the safety air bag controller judges that the vehicle has side collision; the safety air bag controller sends ignition current at intervals and is sequentially contacted with a plurality of gas generating agents in the side safety air bags; the plurality of gas generating agents continuously generate gas to secure the bag pressure in the side airbag for a prescribed time. According to the side safety airbag ignition strategy, ignition current is continuously sent in a time-sharing mode through the safety airbag controller, gas generation agents in the side safety airbag are triggered in a segmented mode, mixed gas is continuously input into an air bag, the air bag pressure value of the side safety airbag in the collision working condition is kept, the evaluation requirement in the C-NCAP is met, and the passenger protection performance in the collision rolling working condition is improved.
Description
Technical Field
The present application relates to the field of vehicle passive safety technology, and in particular to an ignition strategy for a side airbag of a vehicle, an airbag and a vehicle.
Background
In order to improve the occupant protection performance in the collision roll-over condition, the pressure of the head protection position of the side airbag needs to be greater than 50% of the working pressure within 6s after the side airbag is ignited in the C-NCAP. The time from generation to completion of the existing side airbag is short, an ACU (automatic-driving Control Unit, airbag controller) only sends an ignition current to the side airbag once, and a gas generator releases mixed gas to the airbag once, so that the gas pressure in the airbag cannot be guaranteed to be more than 50% of the working state within 6s due to insufficient gas tightness of the airbag.
Content of application
The present application is directed to solving at least one of the problems in the prior art.
Therefore, a first objective of the present application is to provide an ignition strategy for a side airbag of a vehicle, in which ignition current is continuously ignited within a specified time, so as to realize a pressure maintaining effect of the side airbag and improve protection of passengers in the vehicle;
a second object of the present application is to provide a side airbag in which a reaction occurs to ensure that the pressure of the side airbag is continuously satisfied within a prescribed time;
a third object of the present application is to propose a vehicle comprising an ignition strategy of the side airbag described above.
In order to achieve the above object, a first aspect of the present application provides an ignition strategy for a side airbag, comprising: the safety air bag controller judges that the vehicle has side collision; the safety air bag controller sends ignition current at intervals and is sequentially contacted with a plurality of gas generating agents in the side safety air bags; the plurality of gas generating agents continuously generate gas to secure the bag pressure in the side airbag for a prescribed time.
According to the side safety airbag ignition strategy, ignition current is continuously sent in a time-sharing mode through the safety airbag controller, gas generation agents in the side safety airbag are triggered in a segmented mode, mixed gas is continuously input into an air bag, the air bag pressure value of the side safety airbag in the collision working condition is kept, the evaluation requirement in the C-NCAP is met, and the passenger protection performance in the collision rolling working condition is improved.
Further, the airbag controller determines whether a side collision of the vehicle occurs by receiving a collision signal of the side collision sensor.
Further, if the airbag controller detects that the acceleration of the side impact sensor exceeds a set collision ignition threshold, the airbag controller sequentially sends ignition current to the side airbags.
Further, a gas generator is arranged in the side safety air bag, and multiple gas generating agents are stored in the gas generator in a grid mode.
Further, the ignition current is in multiple portions, and each portion of the ignition current is adapted to react with a corresponding gas generant charge and produce a gas.
Further, the ignition current is in multiple portions and at least one of the ignition currents is adapted to react with at least two of the gas generant portions and produce a gas.
A second aspect of the present application provides a side airbag including: the side airbag comprises a side airbag body, wherein an accommodating space is arranged in the side airbag body; the gas generator is arranged in the accommodating space, and gas generating agents stored in a plurality of grids are arranged in the gas generator.
Further, still include: a pressure sensor disposed within the receiving space and adapted to detect a gas pressure within the receiving space.
A third aspect of the present application provides a vehicle comprising an ignition strategy for a side airbag as described.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of an ignition strategy of a side airbag according to an embodiment of the present application.
Reference numerals:
a side impact sensor 1, an airbag controller 2, a gas generator 3, a gas generating agent 4 and an airbag 5.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
The ignition strategy of a side airbag according to an embodiment of the present application is described below with reference to fig. 1, including: the airbag controller 2 judges that a vehicle has a side collision; the air bag controller 2 sends ignition current at intervals and is sequentially contacted with a plurality of gas generating medicaments 4 in the side air bag; the multiple portions of gas generating agent 4 continue to generate gas to ensure the pressure of the gas pocket 5 in the side airbag for a prescribed time.
The time from generation to completion of the existing side airbag is short, an ACU (automatic-driving Control Unit, airbag controller) only sends an ignition current to the side airbag once, and a gas generator releases mixed gas to the airbag once, so that the gas pressure in the airbag cannot be guaranteed to be more than 50% of the working state within 6s due to insufficient gas tightness of the airbag.
The application is that the side safety air bag maintains pressure in a specified time, and provides a mode capable of continuous ignition, each time ignition current is contacted with a plurality of gas generating medicaments 4 in the side safety air bag, the gas generating medicaments 4 generate chemical reaction and release gas into the air bag 5, and the air bag 5 swells after being inflated, so that the safety of passengers in the vehicle can be protected.
Among the plural gas generating chemicals 4 to which the ignition current controlled by the airbag controller 2 is applied, the ignition current may be applied to one or plural gas generating chemicals 4 at a time. The safety air bag controller 2 is ignited for a plurality of times within a set time, part of the gas generating medicament 4 generates chemical reaction to generate gas each time, and the gas is filled into the air bag 5, so that the air pressure in the air bag 5 is continuously kept in a state of more than 50% of the working state within the set time.
According to the ignition strategy of the side safety airbag, the ignition current is continuously sent in a time-sharing mode through the safety airbag controller 2, so that the gas generating agent 4 in the side safety airbag is triggered in a segmented mode, mixed gas is continuously input into the gas bag 5, the pressure value of the gas bag 5 of the side safety airbag under the collision working condition is maintained, the evaluation requirement in the C-NCAP is met, and the passenger protection performance under the collision rolling working condition is improved.
According to an embodiment of the present application, the airbag controller 2 determines whether a side collision of the vehicle occurs by receiving a collision signal of the side collision sensor 1; if the airbag controller 2 detects that the acceleration of the side impact sensor 1 exceeds a set ignition threshold, the ignition current is sequentially sent to the side airbags.
The side impact sensor 1 can judge whether the vehicle has a side impact through the acceleration signal, if the acceleration exceeds the threshold value, the side impact is caused, the impact signal is transmitted to the safety airbag controller 2, and the safety airbag controller 2 continuously sends ignition current after receiving the impact signal.
It should be noted that the threshold value is set comprehensively in accordance with various conditions such as the speed of collision, the type of obstacle, the type of vehicle, and the like.
For example: taking the test of a vehicle in a CNCAP with a front impact rigid wall of 50km/h as an example, the acceleration peak value near the driver in the vehicle is generally between 30g and 50g, and in this case, the threshold value can be set to 30 g. That is, when the acceleration exceeds 30g, the airbag controller 2 continues to send the ignition current. Where g is the acceleration of gravity and g is a constant in the examples, g is typically equal to about 9.8m/s 2.
According to one embodiment of the present application, a gas generator 3 is provided in the side airbag, and a plurality of gas generating agents 4 are stored in the gas generator 3 in a cell.
The gas generating agent 4 stored in the grid can be accurately calculated, the gas quantity charged into the gas bag 5 after each ignition is controlled, and the agent quantity of the gas generating agent 4 in each grid in the gas generator 3 can be the same or different.
According to one embodiment of the present application, the ignition current is multiple portions, and each portion of the ignition current is adapted to react with a corresponding gas generant 4 and produce a gas. The ignition current is in multiple portions and at least one of the plurality of ignition currents is adapted to react with at least two portions of the gas generant 4 and produce a gas.
When the first ignition and the chemical reaction of the gas generating chemical 4 occur, since the gas is not present in the bag 5 at this time, a large amount of gas is required to fill the bag 5 immediately, thereby protecting the safety of the occupant.
In embodiments where the amount of gas generant 4 in each cell is different, the amount stored in the cell of gas generant 4 that reacts upon first ignition can be greater than the amount of gas generant 4 in the other cells to ensure that the gas produced fills the gas pocket 5; after the gas sack 5 is filled, a chronic gas leakage occurs due to the weak airtightness of the gas sack 5, and at this time, a large amount of gas is not required to be input into the gas sack 5, and the amount of the gas generating chemical 4 in each cell that reacts with the next several ignition currents may be smaller than the amount of the gas generating chemical 4 that reacts for the first time.
In the embodiment in which the amount of the gas generating chemical 4 in each cell is the same, the gas generator 3 generates a chemical reaction in a plurality of cells at the first ignition to generate gas to fill the gas bag 5, and at the next ignition, only one gas generating chemical 4 in one cell reacts to replenish the gas in the gas bag 5.
According to the side airbag in the embodiment of the present application, comprising: a side airbag body and a gas generator 3.
Specifically, the side airbag body is internally provided with an accommodating space; the gas generator 3 is disposed in the accommodation space, and a plurality of gas generating chemicals 4 stored in cells are disposed in the gas generator 3.
According to an embodiment of the present application, the side airbag further includes: and the pressure sensor is arranged in the accommodating space and is suitable for detecting the gas pressure in the accommodating space.
The pressure sensor can monitor the air pressure in the air bag 5 in real time, when the air pressure does not meet a preset value, a signal is sent to the safety air bag controller 2, the safety air bag controller 2 sends ignition current again to be in contact with the gas generating agent 4 in the gas generator 3, and the generated gas is conveyed into the air bag 5, so that the air pressure in the air bag 5 is continuously kept in a state of being more than 50% of the working state.
For example, the preset value may be set at less than or equal to 50% of the operating state.
According to the embodiment of the application, the vehicle comprises the ignition strategy of the side airbag. The vehicle improves the passenger protection performance in the collision rolling condition, and can improve the safety of passengers in the event of side collision.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An ignition strategy for a side airbag for a vehicle, comprising:
the safety air bag controller judges that the vehicle has side collision;
the safety air bag controller sends ignition current at intervals and is sequentially contacted with a plurality of gas generating agents in the side safety air bags;
the plurality of gas generating agents continuously generate gas to secure the bag pressure in the side airbag for a prescribed time.
2. The side airbag ignition strategy of claim 1 wherein the airbag controller determines whether a side impact has occurred to the vehicle by receiving an impact signal from a side impact sensor.
3. The side airbag ignition strategy of claim 2, wherein ignition current is sent to the side airbags in sequence if the airbag controller detects that the acceleration of the side impact sensor exceeds a set ignition threshold.
4. The side airbag ignition strategy of claim 1 wherein a gas generator is disposed within the side airbag, the gas generator having a plurality of gas generant doses stored therein in a cellular manner.
5. The side airbag ignition strategy of claim 1 wherein the ignition current is in multiple portions and each portion of the ignition current is adapted to react with a corresponding gas generant and produce gas.
6. The side airbag ignition strategy of claim 1 wherein the ignition current is in multiple portions and at least one of the ignition currents is adapted to react with at least two portions of the gas generant and produce gas.
7. A side airbag, comprising:
the side airbag comprises a side airbag body, wherein an accommodating space is arranged in the side airbag body;
the gas generator is arranged in the accommodating space, and gas generating agents stored in a plurality of grids are arranged in the gas generator.
8. The side airbag of claim 7, further comprising: a pressure sensor disposed within the receiving space and adapted to detect a gas pressure within the receiving space.
9. A vehicle comprising a side airbag ignition strategy according to any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480743.5A CN112606792A (en) | 2020-12-15 | 2020-12-15 | Ignition strategy for a side airbag of a vehicle, airbag and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480743.5A CN112606792A (en) | 2020-12-15 | 2020-12-15 | Ignition strategy for a side airbag of a vehicle, airbag and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN112606792A true CN112606792A (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011480743.5A Pending CN112606792A (en) | 2020-12-15 | 2020-12-15 | Ignition strategy for a side airbag of a vehicle, airbag and vehicle |
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| CN (1) | CN112606792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113500975A (en) * | 2021-07-14 | 2021-10-15 | 浙江吉利控股集团有限公司 | Integrated air bag of vehicle, and control method and system of integrated air bag |
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| US6286863B1 (en) * | 1997-12-05 | 2001-09-11 | Honda Giken Kogyo Kabushiki Kaisha | Process for deploying air bag in air bag device |
| CN1772717A (en) * | 2004-09-24 | 2006-05-17 | 高田株式会社 | Igniting agent, initiator, gas generator, airbag apparatus, and seatbelt apparatus |
| CN101316744A (en) * | 2005-11-28 | 2008-12-03 | 奥托里夫Asp股份有限公司 | Inflator second stage combustion control |
| CN111319581A (en) * | 2018-12-14 | 2020-06-23 | 现代自动车株式会社 | Method of controlling an airbag inflator |
| CN111660994A (en) * | 2019-03-07 | 2020-09-15 | 丰田自动车株式会社 | Airbag device for vehicle, control method for airbag device for vehicle, and storage medium |
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2020
- 2020-12-15 CN CN202011480743.5A patent/CN112606792A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6286863B1 (en) * | 1997-12-05 | 2001-09-11 | Honda Giken Kogyo Kabushiki Kaisha | Process for deploying air bag in air bag device |
| US6149193A (en) * | 1999-08-06 | 2000-11-21 | Breed Automotive Technology, Inc. | Variable output inflator |
| CN1772717A (en) * | 2004-09-24 | 2006-05-17 | 高田株式会社 | Igniting agent, initiator, gas generator, airbag apparatus, and seatbelt apparatus |
| CN101316744A (en) * | 2005-11-28 | 2008-12-03 | 奥托里夫Asp股份有限公司 | Inflator second stage combustion control |
| CN111319581A (en) * | 2018-12-14 | 2020-06-23 | 现代自动车株式会社 | Method of controlling an airbag inflator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113500975A (en) * | 2021-07-14 | 2021-10-15 | 浙江吉利控股集团有限公司 | Integrated air bag of vehicle, and control method and system of integrated air bag |
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Application publication date: 20210406 |