CN209581449U - A kind of vehicle braking force aid system and vehicle - Google Patents
A kind of vehicle braking force aid system and vehicle Download PDFInfo
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- CN209581449U CN209581449U CN201920180960.9U CN201920180960U CN209581449U CN 209581449 U CN209581449 U CN 209581449U CN 201920180960 U CN201920180960 U CN 201920180960U CN 209581449 U CN209581449 U CN 209581449U
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Abstract
The embodiments of the present invention provide a kind of vehicle braking force aid system and vehicle, and wherein vehicle braking force aid system includes: the vacuum booster unit connecting with the executing agency of vehicle braking；First controller is connect with vacuum booster unit by first control circuit；Second controller is connect with vacuum booster unit by second control circuit.In the embodiments of the present invention, the vacuum booster unit connecting with the executing agency of vehicle braking is connect by first control circuit with the first controller, and it is connect by second control circuit with second controller, vehicle braking force aid system is enabled to control vacuum booster unit by multiple control devices, so that when wherein a control device breaks down, it can continue control vacuum booster unit by another control device to work, it advantageously ensures that the normal work of vacuum booster unit, and then is conducive to improve the safety of vehicle.
Description
Technical field
The utility model relates to vehicle brake technology field, in particular to a kind of vehicle braking force aid system and vehicle.
Background technique
Avoiding vehicle from losing brake boost or brake boost reduction is that pure electric automobile reaches in functional safety design aspect
One peace of the C grade in ASIL (Automotive Safety Integration Level, automotive safety integrity level)
Full target, currently, whether the brake boost of vehicle is generally realized by vacuum pump, but can be just to guarantee vacuum pump on general vehicle
Often work lacks detection method and precautionary measures, when the controller for controlling vacuum pump breaks down, is unable to ensure vacuum pump
It can work on, easy vehicle loses brake boost, and there are security risks.
Utility model content
The utility model embodiment technical problems to be solved are to provide a kind of vehicle braking force aid system and vehicle, to
The brake booster for solving current vehicle lacks detection method and precautionary measures, and when controller breaks down, can not
Guarantee that vacuum pump works on, there are problems that security risk.
In order to solve the above technical problems, the utility model embodiment provides a kind of vehicle braking force aid system, comprising:
The vacuum booster unit being connect with the executing agency of vehicle braking；
First controller is connect with vacuum booster unit by first control circuit；
Second controller is connect with vacuum booster unit by second control circuit；
Wherein, second controller gets the first signal that the first controller is in normal operating conditions, the second control of control
Circuit processed is in off-state, and the first controller controls the opening and closing of vacuum booster unit by first control circuit；Second controller
The second signal that the first controller is in abnormal operation is got, control second control circuit is in connection status, the second control
Device processed controls the opening and closing of vacuum booster unit by second control circuit.
Specifically, vehicle braking force aid system as described above, vacuum booster unit include: vacuum pump and for driving
The driving chip of vacuum pump；
Wherein, the first controller is connect by first control circuit with driving chip；
Second controller is connect by second control circuit with driving chip.
Preferably, vehicle braking force aid system as described above, communicates to connect between the first controller and second controller；
Wherein, second signal includes: the fault-signal and/or the first controller and second controller that the first controller is sent
Disconnect the communication cut-off signal of communication connection.
Specifically, vehicle braking force aid system as described above, vehicle braking force aid system further include: a control signal returns
Adopt circuit；
Wherein, the output end and the first controller of signal back production circuit connection driving chip are controlled.
Preferably, vehicle braking force aid system as described above is provided with a control switch on second control circuit, controls
The input terminal of switch and the first pin of second controller connect, and output end is connect with driving chip, control terminal and the second control
The second pin of device connects；
Wherein, it is in connection status or off-state that second controller, which controls second control circuit by control switch,.
Further, vehicle braking force aid system as described above, control switch include: triode；
Wherein, the first pin of the emitter of triode and second controller connects, and collector is connect with driving chip, base
The connection of the second pin of pole and second controller.
Preferably, vehicle braking force aid system as described above, vehicle braking force aid system further include: one with vacuum pump
The current detection circuit of operating circuit connection；
Wherein, current detection circuit is also connect with the first controller.
Further, vehicle braking force aid system as described above, vehicle braking force aid system further include: with the first control
The warning device of device connection；
Wherein, the first controller gets the abnormal current that vacuum pump is in abnormal operation by current detection circuit
Value, control warning device are in alarm condition.
Specifically, vehicle braking force aid system as described above, abnormal current value include:
After first controller controls driving chip starting the first preset time of vacuum pump, the first current value got,
In, the first current value is greater than preset second current value or is less than preset third current value, and the second current value is greater than vacuum pump
Current value when normal work, third current value are less than current value when vacuum pump works normally；
Alternatively, being greater than for getting is default after the first controller control driving chip closes the second preset time of vacuum pump
The 4th current value the 5th current value.
Another preferred embodiment of the utility model additionally provides a kind of vehicle, comprising: vehicle braking as described above helps
Force system.
Compared with prior art, a kind of vehicle braking force aid system and vehicle provided by the embodiment of the utility model, at least
It has the advantages that
In the embodiments of the present invention, the vacuum booster unit connecting with the executing agency of vehicle braking is by first
Control circuit is connect with the first controller, and is connect by second control circuit with second controller, so that vehicle braking power-assisted
System can control vacuum booster unit by multiple control devices, so that when wherein a control device breaks down, energy
Continue control vacuum booster unit by another control device to work, advantageously ensures that the normal work of vacuum booster unit
Make, and then is conducive to improve the safety of vehicle.Specifically, in the embodiments of the present invention, when the first controller is in
When normal operating conditions, second controller gets the first signal that the first controller is in normal operating conditions, control second
Control circuit is in off-state, only controls the opening and closing of vacuum booster unit by first control circuit by the first controller, favorably
In avoid second controller by second control circuit influence vacuum booster unit movement, guarantee that vacuum booster unit receives control
The unicity of system；When the first controller is in abnormal operation, the first controller can not cause shadow to vacuum booster unit
It rings, i.e., the first controller can not start vacuum booster unit, so that vehicle has security risk caused by control force deficiency, at this time
Second controller gets the second signal that the first controller is in abnormal operation, and control second control circuit is in connection shape
State enables second controller to control the opening and closing of vacuum booster unit by second control circuit, and then guarantees vacuum tube power-assisted
Device can provide brake boost, guarantee the brake force of vehicle, and then avoid improving vehicle because of brake force deficiency bring security risk
Safety.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of the vehicle braking force aid system of the utility model；
Fig. 2 is the second structural representation of the vehicle braking force aid system of the utility model.
[description of symbols]
1, executing agency；2, vacuum booster unit；201, vacuum pump；202, driving chip；
3, the first controller；4, first control circuit；5, second controller；6, second control circuit；
601, control switch；602, triode；7, signal back production circuit is controlled；8, current detection circuit；
9, warning device.
Specific embodiment
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.In the following description, such as specific configure with the specific detail of component only is provided
Only to assist in comprehensive understanding the embodiments of the present invention.It therefore, it will be apparent to those skilled in the art that can be to here
The embodiment of description makes various changes and modifications without departing from the scope of the utility model and spirit.In addition, in order to clear and
Succinctly, the description to known function and construction is omitted.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic includes at least one embodiment of the utility model.Therefore, go out everywhere in the whole instruction
Existing " in one embodiment " or " in one embodiment " not necessarily refers to identical embodiment.In addition, these are specific special
Sign, structure or characteristic can combine in any suitable manner in one or more embodiments.
In the various embodiments of the utility model, it should be appreciated that the size of the serial number of following each processes is not meant to hold
Row sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, and implement without coping with the utility model
The implementation process of example constitutes any restriction.
It should be understood that the terms "and/or", only a kind of incidence relation for describing affiliated partner, expression can deposit
In three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.
In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
In embodiment provided herein, it should be appreciated that " B corresponding with A " indicates that B is associated with A, can be with according to A
Determine B.It is also to be understood that determine that B is not meant to determine B only according to A according to A, it can also be according to A and/or other information
Determine B.
Referring to Fig. 1 or Fig. 2, a preferred embodiment of the utility model provides a kind of vehicle braking force aid system, comprising:
The vacuum booster unit 2 being connect with the executing agency 1 of vehicle braking；
First controller 3 is connect with vacuum booster unit 2 by first control circuit 4；
Second controller 5 is connect with vacuum booster unit 2 by second control circuit 6；
Wherein, second controller 5 gets the first signal that the first controller 3 is in normal operating conditions, control second
Control circuit 6 is in off-state, and the first controller 3 controls the opening and closing of vacuum booster unit 2 by first control circuit 4；Second
Controller 5 gets the second signal that the first controller 3 is in abnormal operation, and control second control circuit 6 is in connection shape
State, second controller 5 control the opening and closing of vacuum booster unit 2 by second control circuit 6.
In the embodiments of the present invention, the vacuum booster unit 2 that connect with the executing agency 1 of vehicle braking passes through the
One control circuit 4 is connect with the first controller 3, and is connect by second control circuit 6 with second controller 5, so that vehicle system
Dynamic force aid system can control vacuum booster unit 2 by multiple control devices, so that wherein event ought occur by a control device
When barrier, control vacuum booster unit 2 can be continued by another control device and worked, advantageously ensure that vacuum booster unit 2
Normal work, and then be conducive to improve vehicle safety.Specifically, in the embodiments of the present invention, when the first control
When device 3 processed is in normal operating conditions, second controller 5 gets the first letter that the first controller 3 is in normal operating conditions
Number, control second control circuit 6 is in off-state, only controls vacuum servo dress by first control circuit 4 by the first controller 3
The opening and closing for setting 2 is conducive to the movement for avoiding second controller 5 from influencing vacuum booster unit 2 by second control circuit 6, guarantees
Vacuum booster unit 2 connects controlled unicity；When the first controller 3 is in abnormal operation, the first controller 3 can not
Vacuum booster unit 2 is impacted, i.e., the first controller 3 can not start vacuum booster unit 2, so that vehicle has control force
Security risk caused by deficiency, second controller 5 gets the second letter that the first controller 3 is in abnormal operation at this time
Number, control second control circuit 6 is in connection status, and second controller 5 is enabled to control vacuum servo by second control circuit 6
The opening and closing of device 2, so guarantee vacuum tube power assisting device brake boost can be provided, guarantee the brake force of vehicle, so avoid because
Brake force deficiency bring security risk, improves the safety of vehicle.Optionally, the first controller 3 includes: for controlling vacuum
Central processing unit in the control device of power assisting device 2, second controller 5 include: the control for controlling vacuum booster unit 2
Power supply chip in device, wherein power supply chip is preferably TLF35584.
Referring to Fig. 1 or Fig. 2, specifically, vehicle braking force aid system as described above, vacuum booster unit 2 includes: vacuum
Pump 201 and the driving chip 202 for driving vacuum pump 201；
Wherein, the first controller 3 is connect by first control circuit 4 with driving chip 202；
Second controller 5 is connect by second control circuit 6 with driving chip 202.
In the embodiments of the present invention, vacuum booster unit 2 includes: vacuum pump 201 and for driving vacuum pump
201 driving chip 202, wherein the first controller 3 and second controller 5 are connect with driving chip 202, when needs pair
When vacuum pump 201 is controlled, the first controller 3 passes through second control circuit by first control circuit 4 or second controller 5
6 pairs of driving chips 202 control, and then drive the opening and closing of vacuum pump 201, when in the first controller 3 and second controller 5
It one when can not control vacuum booster unit 2, can be by another control of the realization to vacuum booster unit 2, favorably
In the fault-tolerance for improving vacuum booster unit 2.Wherein, specific first control circuit 4 and second control circuit 6 and driving core
Driving circuit connection on piece 202.
Referring to Fig. 1 or Fig. 2, it is preferable that vehicle braking force aid system as described above, the first controller 3 and the second control
It is communicated to connect between device 5；
Wherein, second signal includes: the fault-signal and/or the first controller 3 and the second control that the first controller 3 is sent
Device 5 disconnects the communication cut-off signal of communication connection.
In the embodiments of the present invention, communication connection between the first controller 3 and second controller 5, so that the two
Between can be carried out information exchange, the work state information of another party is learnt convenient for a side.Wherein second signal includes the first control
The communication cut-off signal that the fault-signal and/or communication connection that device 3 is sent disconnect, so that when the first controller 3 breaks down,
If the communication module of the first controller 3 is intact, there is communication function, the first controller 3 is by sending fault-signal to the at this time
Two controllers 5 control second controller to driving chip 202 by second control circuit 6；If the first controller 3
Communication module also failure when, no longer have communication function, the communication connection between the first controller 3 and second controller 5 at this time
It disconnects, second controller 5 is made to know that the first controller 3 breaks down, second controller passes through 6 pairs of second control circuit drives at this time
Dynamic chip 202 is controlled, and the fault-tolerance of whole system is increased, and is conducive to the safety for improving vehicle.Wherein, fault-signal
Generation when detecting that itself breaks down by the first controller 3, or receive fault message injection when carrying out self-test and generate.
Referring to Fig. 1 or Fig. 2, specifically, vehicle braking force aid system as described above, vehicle braking force aid system is also wrapped
It includes: a control signal back production circuit 7；
Wherein, control signal back production circuit 7 connects the output end and the first controller 3 of driving chip 202.
In the embodiments of the present invention, vehicle booster braking system further includes the output end for connecting driving chip 202
With the control signal back production circuit 7 of the first controller 3, wherein when vehicle launch carries out self-test, the first controller 3 is received
Fault message injection generates and sends fault-signal to second controller 5, while being obtained and being driven by control signal back production circuit 7
The status signal of dynamic chip 202, and judge that can second controller 5 to driving chip when the first controller 3 breaks down
202 are controlled, consequently facilitating user understands the situation of vehicle braking force aid system before vehicle enters driving status, and
Two controllers 5 take corresponding safety measure when cannot control driving chip 202, and then improve safety.
Referring to Fig. 1, it is preferable that vehicle braking force aid system as described above is provided with a control on second control circuit 6
Switch 601, the input terminal of control switch 601 are connect with the first pin of second controller 5, and output end and driving chip 202 connect
It connects, control terminal is connect with the second pin of second controller 5；
Wherein, it is in connection status or off-state that second controller 5, which controls second control circuit 6 by control switch 601,.
Referring to fig. 2, further, vehicle braking force aid system as described above, control switch 601 include: triode
602；
Wherein, the emitter of triode 602 is connect with the first pin of second controller 5, collector and driving chip 202
Connection, base stage are connect with the second pin of second controller 5.
In the embodiments of the present invention, second controller 5 passes through the control switch that is set on second control circuit 6
The connection of 601 control second circuits.Wherein, the control terminal of control switch 601 and the second pin of second controller 5 connect
It connects, control terminal control signal is sent a control signal to by the second pin of second controller 5 and is turned on or off with output end,
And then the connection of second control circuit 6 is controlled, convenient for the realization of control operation.Preferably, control switch 601 includes but not
It is limited to triode 602.Wherein, the first pin of second controller 5 is the pin that can export electric energy, and second pin is to send control
The pin of signal, by taking power supply chip as an example, the first pin is power pins, and second pin is shutdown pin.Optionally, first draws
Foot may also be configured to an individual power supplier.
Referring to Fig. 1 or Fig. 2, it is preferable that vehicle braking force aid system as described above, vehicle braking force aid system also wrap
It includes: a current detection circuit 8 being connect with the operating circuit of vacuum pump 201；
Wherein, current detection circuit 8 is also connect with the first controller 3.
In the embodiments of the present invention, vehicle braking force aid system further include: one with the operating circuit of vacuum pump 201
The current detection circuit 8 of connection, for detecting the electric current of vacuum pump 201, current detection circuit 8 is also connect with the first controller 3,
The electric current for the vacuum pump 201 that current detection circuit 8 is detected is obtained by the first controller 3, and then convenient for the first control
Device 3 judges the working condition of vacuum pump 201.
Referring to Fig. 1 or Fig. 2, further, vehicle braking force aid system as described above, vehicle braking force aid system is also wrapped
It includes: the warning device 9 being connect with the first controller 3；
Wherein, the first controller 3 gets vacuum pump 201 by current detection circuit 8 and is in the different of abnormal operation
Normal current value, control warning device 9 are in alarm condition.
In the embodiments of the present invention, vehicle braking force aid system further includes the alarm connecting with the first controller 3
Device 9 judges vacuum pump 201 when the first controller 3 is abnormal current value by the current value that current detection circuit 8 detects
In abnormal operation, there is the hypodynamic risk of braking, controlling warning device 9 at this time is in alarm condition, convenient for user and
Shi get Zhi vacuum pump 201 is abnormal, and then takes corresponding safety measure, is conducive to reduction and even avoids because vacuum pump 201 is different
Security risk caused by often.Wherein, warning device 9 includes but is not limited to the indicator light being set in instrument and/or is set to
Buzzer in vehicle.
Specifically, vehicle braking force aid system as described above, abnormal current value include:
After first controller 3 controls starting 201 first preset time of vacuum pump of driving chip 202, first got is electric
Flow valuve, wherein the first current value is greater than preset second current value or is less than preset third current value, and the second current value is greater than
Current value when vacuum pump 201 works normally, third current value are less than current value when vacuum pump 201 works normally；
Alternatively, what is got is big after the first controller 3 control driving chip 202 closes 201 second preset time of vacuum pump
In the 5th current value of preset 4th current value.
In the embodiments of the present invention, abnormal current value includes: that driving chip 202 starts vacuum pump 201 first in advance
If the first current value got after the time, wherein the first current value is greater than preset second current value or is less than preset the
Three current values, under normal circumstances, after driving chip 202 starts 201 first preset time of vacuum pump, vacuum pump 201 arrived flat
Steady working stage, current value at this time should stabilize to a fixed value, if the current value of vacuum pump 201 is greater than the second current value at this time
Or it is less than third current value, illustrate that the operating current of vacuum pump 201 at this time is abnormal, and then can determine that operating circuit occurs
Problem, i.e. 201 operation irregularity of vacuum pump.Abnormal current value can also include: that driving chip 202 closes vacuum pump 201 second
The 5th current value greater than the 4th current value got after preset time, under normal circumstances, driving chip 202 close vacuum pump
201 when reaching the second preset time, and vacuum pump 201 has disengaged from working condition, if at this time the current value of vacuum pump 201 be greater than it is default
The 4th current value, illustrate that the operating circuit of vacuum pump 201 at this time there is a problem, i.e. 201 operation irregularity of vacuum pump.
Another preferred embodiment of the utility model additionally provides a kind of vehicle, comprising: vehicle braking as described above helps
Force system.
Another preferred embodiment of the utility model provides a vehicle including above-mentioned vehicle braking force aid system, vehicle system
Dynamic force aid system can carry out control vacuum booster unit by more control devices, so that wherein event ought occur by a control device
When barrier, control vacuum booster unit 2 can be continued by another control device and worked, advantageously ensure that vacuum booster unit 2
Normal work, guarantee the brake force of vehicle, so be conducive to improve vehicle safety.
In addition, the utility model can in different examples repeat reference numerals and/or letter.This repetition is for letter
Change and clear purpose itself do not indicate the relationship between discussed various embodiments and/or setting.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
It also should be regarded as the protection scope of the utility model with retouching.
Claims (10)
1. a kind of vehicle braking force aid system characterized by comprising
The vacuum booster unit (2) being connect with the executing agency (1) of vehicle braking；
First controller (3) is connect with the vacuum booster unit (2) by first control circuit (4)；
Second controller (5) is connect with the vacuum booster unit (2) by second control circuit (6)；
Wherein, the second controller (5) gets the first signal that first controller (3) is in normal operating conditions,
The second control circuit (6) are controlled in off-state, first controller (3) is controlled by the first control circuit (4)
Make the opening and closing of the vacuum booster unit (2)；The second controller (5) gets first controller (3) and is in abnormal
The second signal of working condition controls the second control circuit (6) in connection status, and the second controller (5) passes through institute
State the opening and closing that second control circuit (6) control the vacuum booster unit (2).
2. vehicle braking force aid system according to claim 1, which is characterized in that the vacuum booster unit (2) includes:
Vacuum pump (201) and driving chip (202) for driving the vacuum pump (201)；
Wherein, first controller (3) is connect by the first control circuit (4) with the driving chip (202)；
The second controller (5) is connect by the second control circuit (6) with the driving chip (202).
3. vehicle braking force aid system according to claim 1, which is characterized in that first controller (3) with it is described
Second controller communicates to connect between (5)；
Wherein, the second signal includes: the fault-signal and/or first controller that first controller (3) sends
(3) the communication cut-off signal of communication connection is disconnected with the second controller (5).
4. vehicle braking force aid system according to claim 2, which is characterized in that the vehicle braking force aid system also wraps
It includes: control signal back production circuit (7)；
Wherein, the output end of control signal back production circuit (7) connection driving chip (202) and first control
Device (3).
5. vehicle braking force aid system according to claim 2, which is characterized in that set on the second control circuit (6)
It is equipped with a control switch (601), the input terminal of the control switch (601) and first pin of the second controller (5) connect
It connects, output end is connect with the driving chip (202), and control terminal is connect with the second pin of the second controller (5)；
Wherein, the second controller (5) controls the second control circuit (6) in described by the control switch (601)
Connection status or the off-state.
6. vehicle braking force aid system according to claim 5, which is characterized in that the control switch (601) includes: three
Pole pipe (602)；
Wherein, the emitter of the triode (602) is connect with first pin of the second controller (5), collector
It is connect with the driving chip (202), base stage is connect with the second pin of the second controller (5).
7. vehicle braking force aid system according to claim 2, which is characterized in that the vehicle braking force aid system also wraps
It includes: a current detection circuit (8) being connect with the operating circuit of the vacuum pump (201)；
Wherein, the current detection circuit (8) also connect with first controller (3).
8. vehicle braking force aid system according to claim 7, which is characterized in that the vehicle braking force aid system also wraps
It includes: the warning device (9) being connect with first controller (3)；
Wherein, first controller (3) gets the vacuum pump (201) by the current detection circuit (8) and is in different
The abnormal current value of normal working condition controls the warning device (9) in alarm condition.
9. vehicle braking force aid system according to claim 8, which is characterized in that the abnormal current value includes:
After first controller (3) controls driving chip (202) starting (201) first preset time of vacuum pump, obtain
The first current value arrived, wherein first current value is greater than preset second current value or is less than preset third current value,
Second current value is greater than the current value when vacuum pump (201) work normally, and the third current value is less than described true
Current value when sky pump (201) works normally；
Alternatively, when the first controller (3) control driving chip (202) closing vacuum pump (201) second is default
Between after, the 5th current value greater than preset 4th current value that gets.
10. a kind of vehicle characterized by comprising vehicle braking force aid system as described in any one of claim 1 to 9.
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| CN201920180960.9U CN209581449U (en) | 2019-01-31 | 2019-01-31 | A kind of vehicle braking force aid system and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920180960.9U CN209581449U (en) | 2019-01-31 | 2019-01-31 | A kind of vehicle braking force aid system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111717183A (en) * | 2020-05-29 | 2020-09-29 | 东风汽车集团有限公司 | Control system and control method of electronic vacuum pump and automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111717183A (en) * | 2020-05-29 | 2020-09-29 | 东风汽车集团有限公司 | Control system and control method of electronic vacuum pump and automobile |
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