CN101596900B - Brake control system and control method of electric vehicle - Google Patents
Brake control system and control method of electric vehicle Download PDFInfo
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- CN101596900B CN101596900B CN 200810125701 CN200810125701A CN101596900B CN 101596900 B CN101596900 B CN 101596900B CN 200810125701 CN200810125701 CN 200810125701 CN 200810125701 A CN200810125701 A CN 200810125701A CN 101596900 B CN101596900 B CN 101596900B
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Abstract
The invention provides a brake control system of an electric vehicle, wherein, a motor controller (11) is used for receiving electric signals which can indicate the brake depth to obtain the value of brake depth, calculating brake velocity value according to the added value of the brake depth in the monitoring time period, determining whether the electric vehicle is in the normal brake working condition or the emergent brake working condition according to the brake depth value and the calculated brake velocity value and outputting the electric signals used for controlling the output of the motive power of a motor (1) according to the determined working condition. The brake control method of the electric vehicle in the invention comprises the following steps: calculating the brake velocity value according to the added value of the brake depth in the monitoring time period; determining whether the electric vehicle is in the normal brake working condition or the emergent brake working condition according to the brake depth value and the calculated brake velocity value; and controlling the motive power output of the motor (1) correspondingly according to the determined working condition. The brake control system and control method in the invention can reach faster brake effects and improve brake safety.
Description
Technical field
The present invention relates to electronlmobil, relate in particular to a kind of brake control system and control method of electronlmobil.
Background technology
The early stage mechanical brake of the brake system process system of tradition fuel vehicle is to the later stage hydraulic brake system to nearest electric mechanical brake system and the differentiation of electronic hydraulic brake system, safety and stability is improving always, the groundwork of its brake all is by brake lining and braking disc or brake drum are close to, produce friction force, vehicle is advanced or the kinetic transformation that retreats is that fricative heat energy is melt in the atmosphere.
At present, electronlmobil efficient, the energy-saving and environmental protection vehicle has become the development tendency of auto trade because people to the pay attention to day by day of environmental protection and the effective and reasonable utilization of the energy, have.When brake occurs electronlmobil, brake is judged and taked corresponding treatment measures particularly important.Existing electronlmobil brake system still can not be made rapid judgement and take respectively correct treatment measures to reach faster braking effect to improve the safety of brake for normal braking and emergency brake the normal braking of electronlmobil and emergency brake.
Summary of the invention
The purpose of this invention is to provide a kind of brake control system and brake control method that can reach braking effect faster and improve the electronlmobil of brake security.
The brake control system of electronlmobil provided by the invention comprises electric machine controller and brake pedal sensor, described brake pedal sensor represents that for detection of the degree of depth and the output of brake pedal the electric signal of the brake degree of depth is to electric machine controller, described electric machine controller is used for receiving the electric signal of the expression brake degree of depth to obtain the depth value that brakes, calculate the brake speed value according to the brake degree of depth added value in the monitoring time section, and determine that according to described brake depth value and the brake speed value that calculates described electronlmobil is in normal braking operating mode or emergency brake operating mode, and be used for the electric signal of control motor power output according to determined operating mode output.
Electronlmobil brake control method provided by the invention may further comprise the steps: detect brake pedal position to obtain the depth value that brakes; Calculate the brake speed value according to the brake degree of depth added value in the monitoring time section; Determine that according to described brake depth value and the brake speed value that calculates described electronlmobil is in normal braking operating mode or emergency brake operating mode; And the power output of correspondingly controlling motor according to determined operating mode.
Brake control system provided by the invention and brake control method adopt the electric machine controller Real-time Collection brake degree of depth, before all not finishing, the chaufeur brake just electronlmobil is in normal braking or the emergency brake operating mode is judged, and when electronlmobil is judged as emergency brake, the control motor stops power output, reduced the resistance to brake that vehicle advances and produces, thereby the waste of power when having reduced emergency brake and the wearing and tearing of brake lining, slow down faster, and when electronlmobil is judged as normal braking, the power output of electronlmobil is not controlled.Adopt brake control system provided by the invention and brake control method, the waste of power when having reduced emergency brake and the wearing and tearing of brake lining have reached more rapidly braking effect, have improved the safety of electronlmobil brake.
Description of drawings
Fig. 1 is the constructional drawing of electronlmobil brake control system provided by the invention;
Fig. 2 is the constructional drawing of the brake control system when the electronlmobil among Fig. 1 is oil-electric vehicle;
Fig. 3 is the diagram of circuit of electronlmobil brake control method provided by the invention;
Fig. 4 is the diagram of circuit of the preferred implementation of electronlmobil brake control method provided by the invention;
Fig. 5 is the diagram of circuit of the brake control method when the electronlmobil among Fig. 4 is oil-electric vehicle.
The specific embodiment
Of particular note, the electronlmobil of indication of the present invention comprises the oil-electric vehicle that only depends on pure electric automobile that motor-driven travels and travel by motor and driving engine driving.
Below in conjunction with accompanying drawing brake control system provided by the invention and brake control method are described in further detail.
Fig. 1 is the constructional drawing of electronlmobil brake control system provided by the invention.
Electronlmobil brake control system provided by the invention comprises electric machine controller 11 and brake pedal sensor 5, described brake pedal sensor 5 represents that for detection of the degree of depth and the output of brake pedal the electric signal of the brake degree of depth is to electric machine controller 11, described electric machine controller 11 is used for receiving the electric signal of the expression brake degree of depth to obtain the depth value that brakes, calculate the brake speed value according to the brake degree of depth added value in the monitoring time section, and determine that according to described brake depth value and the brake speed value that calculates described electronlmobil is in normal braking operating mode or emergency brake operating mode, and be used for the electric signal of control motor 1 power output according to determined operating mode output.
Described motor 1 also can be converted to kinetic energy the electric machine of electric energy with generator mode work for converting electrical energy into kinetic energy with electric motor mode work arbitrarily, for example can be A/C alternating current dynamo, switched reluctance machines or direct current permanent magnet motor.Described motor 1 is the power take-off implement of electronlmobil, in order to drive Vehicle Driving Cycle.
Described electric machine controller 11 is the master controller of electric automobile motive power control system, is used for acquisition and processing from the working status parameter of the power system of each controller, and sends the operating order requirement to each controller, is used for simultaneously the power output of control motor 1.Described electric machine controller 11 can be PLC or micro controller system.
Described brake pedal sensor 5 is connected with electric machine controller 11, for the operation intention that is used for the perception chaufeur, produce the electric signal of the corresponding expression brake degree of depth and described electric signal is sent to the sensor device of electric machine controller 11 according to the operation of chaufeur.
Described electric machine controller 11 is used for receiving electric signal from the expression brake degree of depth of brake pedal sensor 5 to obtain the depth value that brakes, calculate the brake speed value according to the brake degree of depth added value in the monitoring time section, and be used for the electric signal of control motor 1 power output according to described brake depth value and the brake speed value output that calculates.
Described electric machine controller 11 is carried out the program of inner setting, indication according to program is monitored working as the Front brake degree of depth, regularly receive the electric signal from the expression brake degree of depth of accelerator pedal sensor 5, the electric signal of the expression brake degree of depth is converted to the brake depth value, and according in the monitoring time section brake degree of depth added value calculate the brake speed value, for conventionally known to one of skill in the art.Described monitoring time section can arrange as the case may be, is preferably 1000-2000 sampling period, and each sampling period is preferably 50 μ s-100 μ s.
For example, when the monitoring time section is 1000 sampling periods, each sampling period is when being 50 μ s, described monitoring time section is 0.05s, and described electric machine controller 11 will just can access brake speed value in this of section divided by 0.05s from the changing value of the brake degree of depth during 1000 sampling periods in the 1st sampling period to the detection time.
Described electric machine controller 11 determines that as follows described electronlmobil is in normal braking operating mode or emergency brake operating mode:
When described brake depth value during less than the brake speed critical value, determines that electronlmobil is in the normal braking operating mode greater than normal braking depth value and the brake speed value that calculates during less than the normal braking depth value or when described brake depth value;
When described brake depth value during greater than the brake speed critical value, determines that electronlmobil is in the emergency brake operating mode greater than normal braking depth value and the brake speed value that calculates.
Because the brake degree of depth during electronlmobil generation normal braking is more shallow, and the brake degree of depth when emergency brake occurs is darker, and the depth value that therefore brakes becomes the necessary condition of judging electronlmobil generation normal braking or emergency brake.
To brake depth value and normal braking depth value of electric machine controller 11 compared, and when brake depth value during less than the normal braking depth value, electric machine controller 11 is judged normal braking has been occured, and judges that namely electronlmobil is in the normal braking operating mode.
Because the slow electronlmobil of brake speed still is normal braking in the situation that the brake degree of depth surpasses the normal braking degree of depth, so brake speed also becomes the necessary condition of judging electronlmobil generation normal braking or emergency brake.
Therefore, when brake depth value during greater than the normal braking depth value, described electric machine controller 11 also calculates the brake speed value according to the brake depth value, the brake speed value and the brake speed critical value that calculate are compared, and judge that electronlmobil is in the normal braking operating mode during less than the brake speed critical value when the brake speed value that calculates, judge during greater than the brake speed critical value when the brake speed value emergency brake has occured, judge that namely electronlmobil is in the emergency brake operating mode.
Described normal braking depth value and brake speed critical value are pre-stored in electric machine controller 11, can arrange the normal braking depth value according to the dissimilar of electronlmobil, different electronlmobils can be set with different normal braking depth values.Can allow the chaufeur of different sexes all ages and classes section carry out repeatedly emergency brake and test to obtain the brake speed critical value.Under the preferable case, the scope of described normal braking depth value is 0%-85%, and the depth value that namely brakes accounts for the 0%-85% of the whole journey of stopping, and described brake speed critical value is 0.15%/ms, and namely the brake depth value in every millisecond accounts for 0.15% of the whole journey of stopping.More preferably in the situation, described normal braking depth value is 50%.
The electric signal that described electric machine controller 11 is exported according to the corresponding control of determined operating mode output motor 1 power:
When definite described electronlmobil was in the normal braking operating mode, described electric machine controller 11 outputs were used for control motor 1 and keep the electric signal of power output;
When definite described electronlmobil was in the emergency brake operating mode, described electric machine controller 11 outputs were used for the electric signal that control motor 1 stops power output.
When electronlmobil generation normal braking, automobile can slow down gradually until stop fully, do not need Quick brake, therefore electric machine controller 11 control motors 1 still keep original power output, and adopting brake lining and braking disc friction will order about kinetic transformation that vehicle advances is that heat energy is melt in the atmosphere.
When electronlmobil generation emergency brake, for automobile is halted, electric machine controller 11 control motors 1 stop power output, reduce the resistance to brake that vehicle advances and produces with this, thereby the waste of power when having reduced emergency brake and the wearing and tearing of brake lining.
After electronlmobil generation emergency brake, in order to reach faster braking effect, under the preferable case, described control system also comprises battery controller 12, this battery controller 12 is connected with electric machine controller 11 by the CAN bus, be used for more current battery capacity SOC value and battery capacity SOC higher limit, and the electric signal of output indication comparative result;
When electric machine controller 11 determined that described electronlmobil is in the normal braking operating mode, output was used for control motor 1 and keeps the electric signal of power output;
When electric machine controller 11 determines that described electronlmobil is in the emergency brake operating mode, described electric machine controller 11 also is used for by the electric signal of CAN bus reception from battery controller 12, and output is used for the electric signal that control motor 1 stops power output when this electric signal indicates current battery capacity SOC value to be greater than or equal to battery capacity SOC higher limit, and output is used for control motor 1 and outputs power and be converted into the electric signal that electric power is exported when this electric signal indicates current battery capacity SOC value to be lower than battery capacity SOC higher limit.
As shown in Figure 1, described control system also comprises battery pack 2, and described motor 1 is connected with battery pack 2.
Described battery pack 2 for example can be lead acid storage battery battery pack, iron cell group, nickel chromium triangle electrical storage battery or ni-mh electrical storage battery for the electrical storage battery of electric energy can be provided for motor 1 arbitrarily.Be preferably the iron cell group.
Described battery controller 12 is for detection of sending to electric machine controller 11 with calculating battery capacity SOC value and with this SOC value.Described battery controller 12 can be PLC or micro controller system.
Battery capacity SOC value is used for describing the dump energy of battery pack, is the dump energy of battery pack and the percentum of battery pack rated capacity.
When battery capacity SOC value is greater than or equal to battery capacity SOC higher limit, represent that current capacity of cell is full, so electric machine controller 11 control motors 1 stop power output, the resistance to brake that advances and produce to reduce vehicle.When battery capacity SOC value is lower than battery capacity SOC higher limit, the expression capacity of cell less than, electric machine controller 11 control this moment motor 1 is converted to generator mode by electric motor mode, 1 generating of control motor, outputing power is converted into electric power output, and with the power storage of output in battery pack.In order to guarantee the safety of battery pack, this moment, the generation current of motor 1 was controlled at the maximum charging current that battery pack can bear,
Described electric machine controller 11 is conventionally known to one of skill in the art according to the indication control motor 1 of program by the process that electric motor mode is converted to generator mode.Battery capacity SOC higher limit is used for describing the maximum capacity of battery pack, is the percentum of battery pack maximum capacity and battery pack rated capacity.Different battery pack can have different battery capacity SOC higher limits, and generally described battery capacity SOC higher limit scope is 70%-80%, and namely the battery pack maximum capacity accounts for the 70%-80% of battery pack rated capacity.Under the preferable case, described battery capacity SOC higher limit is 80%.
Fig. 2 is the constructional drawing of the brake control system when the electronlmobil among Fig. 1 is oil-electric vehicle.
When oil-electric vehicle travels by motor 1 and driving engine 3 both drivings, need simultaneously to control both power of motor 1 and driving engine 3 according to the mode of operation of battery capacity SOC value and driving engine 3 and export.When oil-electric vehicle only depends on driving engine 3 drivings to travel, only need to come according to the mode of operation of driving engine 3 the power output of control engine 3.
Therefore, described control system also comprises engine controller 13 and driving device controller 14, described engine controller 13 is connected with the driving device controller and all is connected with electric machine controller 11 by the CAN bus, described engine controller 13 is used for output and represents whether driving engine 3 has the electric signal of power output, and described driving device controller 14 is used for the electric signal of output indication driving engine 3 and automobile power axle coupled condition to electric machine controller 11;
When electric machine controller 11 determines that described electronlmobil is in the emergency brake operating mode, described electric machine controller 11 also is used for receiving from engine controller 13 and from the electric signal of driving device controller 14 by the CAN bus, when receiving expression driving engine 3 and have the electric signal of power output, output is used for control engine 3 and stops the electric signal of power output to engine controller 13, and when receiving indication driving engine 3 and be in the electric signal of released state with the automobile power axle, output is used for electric signal that control engine 3 is connected with the automobile power axle to driving device controller 14.
As shown in Figure 2, described control system also comprises driving engine 3 and driving device 4, and described driving engine 3 for example can be engine petrol, diesel motor or other engine fuel for being the engine installation of kinetic energy with thermal power transfer arbitrarily.Described driving engine 3 is the power take-off implement of hybrid vehicle, in order to drive Vehicle Driving Cycle.Described driving device 4 for conventionally known to one of skill in the art, for example is power-transfer clutch for disconnecting or connect the device of control power output device for automobile and automobile power axle.
Described driving engine 3 is connected with the driving device controller by engine controller 13 respectively with driving device 4 and is connected with the CAN bus, is used for realizing each other data exchange by the CAN bus, for conventionally known to one of skill in the art.
Fig. 3 is the diagram of circuit of electronlmobil brake control method provided by the invention.This control method may further comprise the steps: (S1) detect brake pedal position to obtain the depth value that brakes; (S2) calculate the brake speed value according to the brake degree of depth added value in the monitoring time section; (S3) determine that according to described brake depth value and the brake speed value that calculates described electronlmobil is in normal braking operating mode or emergency brake operating mode; And the power output of (S4) correspondingly controlling motor 1 according to determined operating mode.
Wherein, step (S3) comprising: determine that less than the brake speed critical value electronlmobil is in the normal braking operating mode greater than normal braking depth value and the brake speed value that calculates less than normal braking depth value or described brake depth value according to described brake depth value; Determine that greater than the brake speed critical value electronlmobil is in the emergency brake operating mode greater than normal braking depth value and the brake speed value that calculates according to described brake depth value.
Step (S4) comprising: when definite described electronlmobil was in the normal braking operating mode, control motor 1 kept power output; When definite described electronlmobil was in the emergency brake operating mode, control motor 1 stopped power output.
As shown in Figure 3, electric machine controller 11 at first receives from the brake depth signal of brake pedal sensor 5 obtaining the depth value that brakes, and will brake depth value and pre-stored normal braking depth value in electric machine controller 11 are compared:
When brake depth value during less than the normal braking depth value, electric machine controller 11 judges that electronlmobils are in the normal braking operating mode, and control motor 1 keeps power output;
When brake depth value during greater than the normal braking depth value, electric machine controller 11 also calculates the brake speed value of power vehicle according to the brake depth value, and brake speed value and brake speed critical value are compared:
When brake speed value during less than the brake speed critical value, electric machine controller 11 judges that electronlmobils are in the normal braking operating mode, and control motor 1 keeps power output;
When brake speed value during greater than the brake speed critical value, electric machine controller 11 judges that electronlmobils are in the emergency brake operating mode, and control motor 1 stops power output.
Under the preferable case, step (S4) comprising: when definite described electronlmobil was in the normal braking operating mode, control motor 1 kept power output; When definite described electronlmobil is in the emergency brake operating mode, more current battery capacity SOC value and battery capacity SOC higher limit, control motor 1 stops power output when current battery capacity SOC value is greater than or equal to battery capacity SOC higher limit, and control motor 1 outputs power and is converted into electric power output when current battery capacity SOC value is lower than battery capacity SOC higher limit.
As shown in Figure 4, when electronlmobil was in the emergency brake operating mode, described electric machine controller also 11 received expression battery capacity SOC value electric signal just from battery controller 12 by the CAN bus:
When receiving expression battery capacity SOC value and be higher than the electric signal of battery capacity SOC higher limit, electric machine controller 11 control motors 1 stop power and export;
When receiving expression battery capacity SOC value and be lower than the electric signal of battery capacity SOC higher limit, electric machine controller 11 control motors 1 are converted to generator mode from electric motor mode, output power to be converted into electric power and to export.
Fig. 5 is the diagram of circuit of the brake control method when the electronlmobil among Fig. 4 is oil-electric vehicle.
When oil-electric vehicle travels by motor 1 and driving engine 3 both drivings, need simultaneously to control both power of motor 1 and driving engine 3 according to the mode of operation of battery capacity SOC value and driving engine 3 and export.When oil-electric vehicle only depends on driving engine 3 drivings to travel, only need to come according to the mode of operation of driving engine 3 the power output of control engine 3.
Therefore, step (S4) also comprises: when definite described electronlmobil is in the emergency brake operating mode, detect present engine 3 and whether have power output, have power when output control engine 3 and stop power output detecting driving engine 3, whether and detect driving engine 3 and be connected with the automobile power axle, control engine 3 is connected with the automobile power axle when detecting driving engine 3 and be not connected with the automobile power axle.
As shown in Figure 5, described electric machine controller 11 also receives by the CAN bus whether expression driving engine 3 from engine controller 13 has the electric signal of power output and from the expression driving engine 3 of driving device controller 14 and the electric signal of automobile power axle coupled condition:
When receiving expression driving engine 3 and have the electric signal of power output, described electric machine controller 11 output control engines 3 stop the electric signal of power output to engine controller 13, control engine 3 stops power output, reduce the resistance to brake that vehicle advances and produces with this, and when receiving expression driving engine 3 and be in the electric signal of released state with the automobile power axle, the electric signal that described electric machine controller 11 output control engines 3 are connected with the automobile power axle is to driving device controller 14, control engine 3 is connected with the automobile power axle, rotated and 3 idle running of drive driving engine by the automobile power axle, utilize engine body to pin down vehicle, increase the resistance that automobile advances, realize extra deceleration effect.
Claims (14)
1. the brake control system of an electronlmobil, this control system comprises electric machine controller (11) and brake pedal sensor (5), described brake pedal sensor (5) represents that for detection of the degree of depth and the output of brake pedal the electric signal of the brake degree of depth is to electric machine controller (11), wherein, described electric machine controller (11) is used for receiving the electric signal of the expression brake degree of depth to obtain the depth value that brakes, calculate the brake speed value according to the brake degree of depth added value in the monitoring time section, and determine that according to described brake depth value and the brake speed value that calculates described electronlmobil is in normal braking operating mode or emergency brake operating mode, and be used for the electric signal of control motor (1) power output according to determined operating mode output.
2. control system according to claim 1, wherein, described monitoring time section is 1000-2000 sampling period, each sampling period is 50 μ s-100 μ s.
3. control system according to claim 1, wherein, when described brake depth value during less than the normal braking depth value or when described brake depth value more than or equal to normal braking depth value and the brake speed value that calculates during less than the brake speed critical value, described electric machine controller (11) determines that electronlmobil is in the normal braking operating mode, and output is used for the electric signal that control motor (1) keeps power output;
When described brake depth value greater than normal braking depth value and the brake speed value that calculates during greater than the brake speed critical value, described electric machine controller (11) determines that electronlmobil is in the emergency brake operating mode, and output is used for the electric signal that control motor (1) stops power output.
4. control system according to claim 1, wherein, described control system also comprises battery controller (12), this battery controller (12) is connected with electric machine controller (11) by the CAN bus, be used for more current battery capacity SOC value and battery capacity SOC higher limit, and the electric signal of output indication comparative result;
When described brake depth value during less than the normal braking depth value or when described brake depth value more than or equal to normal braking depth value and the brake speed value that calculates during less than the brake speed critical value, described electric machine controller (11) determines that electronlmobil is in the normal braking operating mode, and output is used for the electric signal that control motor (1) keeps power output;
When described brake depth value greater than normal braking depth value and the brake speed value that calculates during greater than the brake speed critical value, described electric machine controller (11) determines that electronlmobil is in the emergency brake operating mode, described electric machine controller (11) also is used for by the electric signal of CAN bus reception from battery controller (12), and output is used for the electric signal that control motor (1) stops power output when this electric signal indicates current battery capacity SOC value to be greater than or equal to battery capacity SOC higher limit, and output is used for control motor (1) and outputs power and be converted into the electric signal that electric power is exported when this electric signal indicates current battery capacity SOC value to be lower than battery capacity SOC higher limit.
5. according to claim 3 or 4 described control system, wherein, the scope of described normal braking depth value is 0%-85%, and namely described brake depth value accounts for the 0%-85% of the whole journey of stopping, described brake speed critical value is 0.15%/ms, and namely the described brake depth value in every millisecond accounts for 15% of the whole journey of stopping.
6. control system according to claim 4, wherein, described battery capacity SOC higher limit is used for describing the maximum capacity of battery pack, and its scope is 70%-80%, and namely the battery pack maximum capacity accounts for the 70%-80% of battery pack rated capacity.
7. control system according to claim 4, wherein, described control system also comprises engine controller (13) and driving device controller (14), described engine controller (13) is connected 14 with the driving device controller) all be connected with electric machine controller (11) by the CAN bus, described engine controller (13) is used for output and represents whether driving engine (3) has the electric signal of power output, and described driving device controller (14) is used for the electric signal of output indication driving engine (3) and automobile power axle coupled condition to electric machine controller (11);
When electric machine controller (11) determines that described electronlmobil is in the emergency brake operating mode, described electric machine controller (11) also is used for receiving from engine controller (13) and from the electric signal of driving device controller (14) by the CAN bus, when receiving expression driving engine (3) and have the electric signal of power output, output is used for control engine (3) and stops the electric signal of power output to engine controller (13), and when receiving indication driving engine (3) and automobile power axle when being in the electric signal of released state, output is used for electric signal that control engine (3) is connected with the automobile power axle to driving device controller (14).
8. electronlmobil brake control method, this control method may further comprise the steps:
(S1) detect brake pedal position to obtain the depth value that brakes;
(S2) calculate the brake speed value according to the brake degree of depth added value in the monitoring time section;
(S3) determine that according to described brake depth value and the brake speed value that calculates described electronlmobil is in normal braking operating mode or emergency brake operating mode; And
(S4) correspondingly control the power output of motor (1) according to determined operating mode.
9. control method according to claim 8, wherein, described monitoring time section is 1000-2000 sampling period, each described sampling period is 50 μ s-100 μ s.
10. control method according to claim 8, wherein, step (S3) comprising:
Determine that less than the brake speed critical value electronlmobil is in the normal braking operating mode more than or equal to normal braking depth value and the brake speed value that calculates less than normal braking depth value or described brake depth value according to described brake depth value;
Determine that greater than the brake speed critical value electronlmobil is in the emergency brake operating mode greater than normal braking depth value and the brake speed value that calculates according to described brake depth value;
Step (S4) comprising:
When definite described electronlmobil was in the normal braking operating mode, control motor (1) kept power output;
When definite described electronlmobil was in the emergency brake operating mode, control motor (1) stopped power output.
11. control method according to claim 8, wherein, step (S3) comprising:
Determine that less than the brake speed critical value electronlmobil is in the normal braking operating mode more than or equal to normal braking depth value and the brake speed value that calculates less than normal braking depth value or described brake depth value according to described brake depth value;
Determine that greater than the brake speed critical value electronlmobil is in the emergency brake operating mode greater than normal braking depth value and the brake speed value that calculates according to described brake depth value;
Step (S4) comprising:
When definite described electronlmobil was in the normal braking operating mode, control motor (1) kept power output;
When definite described electronlmobil is in the emergency brake operating mode, more current battery capacity SOC value and battery capacity SOC higher limit, control motor (1) stops power output when current battery capacity SOC value is greater than or equal to battery capacity SOC higher limit, and control motor (1) outputs power and is converted into electric power output when current battery capacity SOC value is lower than battery capacity SOC higher limit.
12. according to claim 10 or 11 described control methods, wherein, the scope of described normal braking depth value is 0%-85%, be the 0%-85% that described brake depth value accounts for the whole journey of stopping, described brake speed critical value is 0.15%/ms, and namely the described brake depth value in every millisecond accounts for 15% of the whole journey of stopping.
13. control method according to claim 11, wherein, described battery capacity SOC higher limit is used for describing the maximum capacity of battery pack, and its scope is 70%-80%, and namely the battery pack maximum capacity accounts for the 70%-80% of battery pack rated capacity.
14. control method according to claim 11, wherein, step (S4) also comprises: when definite described electronlmobil is in the emergency brake operating mode, detect present engine (3) and whether have power output, have power when output control engine (3) and stop power output detecting driving engine (3), whether and detect driving engine (3) and be connected with the automobile power axle, control engine (3) is connected with the automobile power axle when detecting driving engine (3) and be not connected with the automobile power axle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810125701 CN101596900B (en) | 2008-06-04 | 2008-06-04 | Brake control system and control method of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810125701 CN101596900B (en) | 2008-06-04 | 2008-06-04 | Brake control system and control method of electric vehicle |
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| CN101596900A CN101596900A (en) | 2009-12-09 |
| CN101596900B true CN101596900B (en) | 2013-01-09 |
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| CN103448559B (en) * | 2013-08-20 | 2016-04-27 | 联合汽车电子有限公司 | Pure electric vehicle mechanism autocontrol system |
| CN105329111A (en) * | 2015-10-29 | 2016-02-17 | 邹斌 | Novel power control system for new energy automobile |
| CN106428533B (en) * | 2016-10-18 | 2018-10-23 | 西安航空制动科技有限公司 | A kind of airplane inertial anti-skid brake system (ABS) ensuring emergency brake |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101073992A (en) * | 2007-06-25 | 2007-11-21 | 江苏大学 | Regenerative and conventional brake integrated controller and its control based on ABS for automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101073992A (en) * | 2007-06-25 | 2007-11-21 | 江苏大学 | Regenerative and conventional brake integrated controller and its control based on ABS for automobile |
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| JP特开2001-16703A 2001.01.19 |
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