CN207875753U - High-low pressure double source controls electric hydraulic power-assisted steering system - Google Patents
High-low pressure double source controls electric hydraulic power-assisted steering system Download PDFInfo
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- CN207875753U CN207875753U CN201721880992.7U CN201721880992U CN207875753U CN 207875753 U CN207875753 U CN 207875753U CN 201721880992 U CN201721880992 U CN 201721880992U CN 207875753 U CN207875753 U CN 207875753U
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Abstract
High-low pressure double source controls electric hydraulic power-assisted steering system, including steering reservoir, electric powered steering pumps, turning machine, low pressure controller and dual pressure controller, wherein, steering reservoir is communicated through oil inlet pipe with electric powered steering pump, electric powered steering pump is communicated through pressure duct with turning machine, turning machine is communicated through low pressure line with steering reservoir, the input terminal of electric powered steering pump is respectively through low pressure controller, dual pressure controller and low-tension supply, vehicle power battery is connected, low pressure controller carries out signal with dual pressure controller by low-voltage control line and connect, dual pressure controller carries out signal with vehicle CAN bus by CAN bus connection line and connect.The design can not only be suitable for electric commercial vehicle, handling maneuver effect preferably, controllability it is stronger, and control mode is various, safety is stronger.
Description
Technical field
The utility model is related to a kind of hydraulic power-assist steering systems more particularly to high-low pressure double source to control electric hydaulic power-assisted
Steering, it is particularly applicable to electric commercial vehicles, and control mode is various, safety is stronger.
Background technology
Automobile market gradually starts the demand for having certain to electric vehicle, but electric vehicle steering is different from routine
Engine truck loses hydraulic power supply without the steering pump of engine band, therefore can only consider to configure new hydraulic power
Source provides the hydraulic booster for turning to and needing, meanwhile, for hydraulic power supply, it must consider its mating control mode.
Authorization Notice No. is CN204309885U, and authorized announcement date is that the utility model patent on May 6th, 2015 discloses
A kind of electric hydraulic power-assisted steering device, including steering motor, vane pump and turning machine, the output shaft and leaf of the steering motor
Piece pump drive coordinates, and the oil outlet of vane pump is communicated with the oil inlet of turning machine；The steering motor is DC brushless motor；Institute
It further includes high voltage direct current battery packet and DC-DC DC decompression controllers, the high voltage direct current to state electric hydraulic power-assisted steering device
The voltage output end of battery pack is connected with the voltage input end of DC-DC DC decompression controllers, the DC-DC DC decompressions
The voltage output end of controller is connected with the voltage input end of steering motor.Although the design can realize stepless time adjustment,
It still has following defect：
First, which uses steering motor, vane pump is combined as new hydraulic power supply, but it is only applicable to
Conventional vehicle is not particularly suited for electric commercial vehicle；
Secondly, although the design controls electric current provided with DC-DC DC decompression controllers, only with height
Voltage-controlled system, if high voltage power supply or its circuit go wrong, when leading to high-voltage device cisco unity malfunction, steering will lose liquid
Power-assisted is pressed, turning to can be very heavy, be easy to cause driving accident, lacks indispensable defense installation, and control mode is excessively single, safety
Property is weaker.
The information for disclosing the background technology part is merely intended to increase the understanding to the general background of present patent application, without
It should be considered as recognizing or implying in any form that information composition has been the existing skill well known to persons skilled in the art
Art.
Invention content
Electric commercial vehicle, control mode list are not suitable for it the purpose of the utility model is to overcome existing in the prior art
One, safety weaker defect and problem provides and a kind of is suitable for that electric commercial vehicle, control mode is various, safety is stronger
High-low pressure double source controls electric hydraulic power-assisted steering system.
In order to achieve the above object, the technical solution of the utility model is：A kind of high-low pressure double source control electric hydaulic
Servo steering system, including steering reservoir, steering pump and turning machine, the steering reservoir are communicated through oil inlet pipe with steering pump,
Steering pump is communicated through pressure duct with turning machine, and turning machine is communicated through low pressure line with steering reservoir；
The steering pump is electric powered steering pump, and the input terminal of electric powered steering pump is successively through low-voltage alternating-current connection line, low
It is electrically connected with low-tension supply after pressure controller, low-voltage direct connection line, the input terminal of electric powered steering pump is successively through high pressure
It is electrically connected with vehicle power battery after exchange connection line, dual pressure controller, high voltage direct current connection line.
Electric powered steering pump includes motor and mechanical pump, the input terminal of motor respectively with low-voltage alternating-current connection line, height
Pressure exchange connection line is electrically connected, and the output end of motor is connect by flexible clutch with mechanical pump, the machine in mechanical pump
Tool oil inlet is communicated with oil inlet pipe, and the mechanical oil outlet in mechanical pump is communicated with pressure duct.
The motor is double drive motors, including a shared rotor, a high voltage stator and a low pressure stator, and high pressure
Stator, low pressure stator share the same shared rotor.
The low pressure controller carries out signal with dual pressure controller by low-voltage control line and connect, the dual pressure controller
Signal is carried out by CAN bus connection line with vehicle CAN bus to connect.
It is high voltage direct current to be flowed through in the high voltage direct current connection line, and the size of the high voltage direct current is 400-
700VDC, it is High Level AC Voltage to flow through in the high-voltage alternating connection line, and the size of the High Level AC Voltage is 196-
380VAC。
It is low-voltage DC to be flowed through in the low-voltage direct connection line, and the size of the low-voltage DC is 12-
24VDC, it is low-voltage AC to flow through in the low-voltage alternating-current connection line, and the size of the low-voltage AC is 5-17VAC.
Compared with prior art, the beneficial effects of the utility model are：
1, in the utility model high-low pressure double source control electric hydraulic power-assisted steering system, steering pump is selected as electric powered steering
Pump is pumped using electric powered steering as new hydraulic power supply, to be suitable for electric commercial vehicle, meanwhile, the friendship pumped into electric powered steering
Galvanic electricity can control immediately, to change the flow of steering pump, keep handling maneuver lighter.Therefore, the utility model can not only
Suitable for electric commercial vehicle, and the portability of handling maneuver is stronger.
2, the utility model high-low pressure double source control electric hydraulic power-assisted steering system in, electric powered steering pump input terminal with
Low pressure controller, dual pressure controller connect simultaneously, and to introduce low-tension supply, vehicle power battery respectively, which passes through low pressure
Controller, dual pressure controller control the alternating current of input electric powered steering pump, and control mode is various, especially works as high voltage control
When device cannot work, low pressure controller can follow up in time, it is ensured that the normal operation of electric powered steering pump avoids the generation of accident, carries
High safety.Therefore, the utility model can not only be suitable for electric commercial vehicle, and control mode is various, safety is stronger.
3, in the utility model high-low pressure double source control electric hydraulic power-assisted steering system, vehicle CAN bus passes through to low
The signal control of pressure controller, dual pressure controller, to be adjusted into the frequency of the alternating current of electric powered steering pump, when determining its work
Between and rotating speed, can rationally adjust according to demand electric powered steering pump power, effectively reduce electric quantity consumption, energy conservation and environmental protection.In addition, also
The working condition that electric powered steering pumps can timely be fed back into vehicle CAN bus, to show electro-hydraulic system working condition,
And manipulation prompt is made, improve the effect for turning to and driving.Therefore, not only controllability is stronger for the utility model, but also handling maneuver
Effect is preferable.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram that electric powered steering pumps in Fig. 1
Fig. 3 is the structural schematic diagram of the stator of motor, rotor in Fig. 2.
Fig. 4 is the control flow chart of the utility model.
In figure：Steering reservoir 1, oil inlet pipe 11, electric powered steering pump 2, pressure duct 21, motor 22, share rotor 221,
High voltage stator 222, low pressure stator 223, mechanical pump 23, mechanical oil inlet 231, mechanical oil outlet 232, turning machine 3, low pressure line
31, low pressure controller 4, low-voltage alternating-current connection line 41, low-tension supply 5, low-voltage direct connection line 51, dual pressure controller 6, height
Pressure exchange connection line 61, vehicle power battery 7, high voltage direct current connection line 71, vehicle CAN bus 8, CAN bus connecting line
Road 81, low-voltage control line 82.
Specific implementation mode
The utility model is described in further detail below in conjunction with description of the drawings and specific implementation mode.
Referring to Fig. 1 to Fig. 4, a kind of high-low pressure double source controls electric hydraulic power-assisted steering system, including steering reservoir 1, turns
To pump and turning machine 3, the steering reservoir 1 is communicated through oil inlet pipe 11 with steering pump, and steering pump is through pressure duct 21 and steering
Machine 3 communicates, and turning machine 3 is communicated through low pressure line 31 with steering reservoir 1；
The steering pump is that electric powered steering pumps 2, and the input terminal of electric powered steering pump 2 is successively through low-voltage alternating-current connection line
41, it is electrically connected with low-tension supply 5 after low pressure controller 4, low-voltage direct connection line 51, the input terminal of electric powered steering pump 2
It is carried out successively with vehicle power battery 7 after high-voltage alternating connection line 61, dual pressure controller 6, high voltage direct current connection line 71
Electrical connection.
The electric powered steering pump 2 includes motor 22 and mechanical pump 23, and the input terminal of motor 22 is connect with low-voltage alternating-current respectively
Circuit 41, high-voltage alternating connection line 61 are electrically connected, and the output end of motor 22 is connected by flexible clutch and mechanical pump 23
It connects, the mechanical oil inlet 231 in mechanical pump 23 is communicated with oil inlet pipe 11, the mechanical oil outlet 232 in mechanical pump 23 and high pressure
Pipeline 21 communicates.
The motor 22 is double drive motors, including 221, high voltage stators 222 of a shared rotor are determined with a low pressure
Son 223, and high voltage stator 222, low pressure stator 223 share the same shared rotor 221.
The low pressure controller 4 carries out signal with dual pressure controller 6 by low-voltage control line 82 and connect, and the height is voltage-controlled
Device 6 processed carries out signal with vehicle CAN bus 8 by CAN bus connection line 81 and connect.
It is high voltage direct current to be flowed through in the high voltage direct current connection line 71, and the size of the high voltage direct current is 400-
700VDC, it is High Level AC Voltage to flow through in the high-voltage alternating connection line 61, and the size of the High Level AC Voltage is 196-
380VAC。
It is low-voltage DC to be flowed through in the low-voltage direct connection line 51, and the size of the low-voltage DC is 12-
24VDC, it is low-voltage AC to flow through in the low-voltage alternating-current connection line 41, and the size of the low-voltage AC is 5-
17VAC。
The principles of the present invention are described as follows：
Referring to Fig. 1 to Fig. 4, the utility model is pumped with electric hydraulic power-assisted steering（Referred to as electric powered steering pump 2）As new
Hydraulic power supply with for electric commercial vehicle provide turn to need hydraulic booster.Electric powered steering pump 2 while and dual pressure controller
6, low pressure controller 4 is connected.
The operation of dual pressure controller 6：Vehicle CAN bus 8 is connected by, CAN bus connection line 81 and dual pressure controller 6
It connects, the voltage and frequency whether dual pressure controller 6 works and export is determined.Vehicle power battery 7 passes through high voltage direct current connecting line
Road 71 is connect with dual pressure controller 6, and high voltage direct current is inputted for dual pressure controller 6（400―700VDC）；Dual pressure controller 6 is logical
High-voltage alternating connection line 61 is crossed to connect with electric powered steering pump 2；High voltage direct current becomes High Level AC Voltage by dual pressure controller 6
（196―380VAC）Drive 2 work of electric powered steering pump；The frequency of alternating current determines turning for the motor 22 in electric powered steering pump 2
The rotating speed of mechanical pump 23 in speed, i.e. electric powered steering pump 2, and then determine the flow of steering hydraulic oil in mechanical pump 23.Vehicle CAN
Bus 8 adjusts working time and the rotating speed of electric powered steering pump 2 by dual pressure controller 6, rationally adjusts electric rotating according to demand
To the power of pump 2, electric quantity consumption, energy conservation and environmental protection can be effectively reduced.The system can also be simplified, and setting dual pressure controller 6 is defeated
Go out to determine the alternating current of frequency, driving electric powered steering pump 2（Motor 22）For permanent rotating speed, i.e. mechanical pump perseverance rotating speed.
The operation of low pressure controller 4：Low-tension supply 5 is connect by low-voltage direct connection line 51 with low pressure controller 4, is
Low pressure controller 4 inputs low-voltage DC（12―24VDC）；Low pressure controller 4 by low-voltage alternating-current connection line 41 with it is electronic
Steering pump 2 connects, and low-voltage DC becomes alternating current by low pressure controller 4（5―17VAC）2 work of electric powered steering pump is driven,
The frequency of alternating current determines the motor speed of electric powered steering pump 2, the i.e. rotating speed of mechanical pump 23 in electric powered steering pump 2, in turn
Determine the flow of steering hydraulic oil in mechanical pump 23.
The cooperation of dual pressure controller 6, low pressure controller 4：Low pressure controller 4 passes through low-voltage control line 82 and high voltage control
Device 6 connects, and receives 6 working signal of dual pressure controller, and the working signal of low pressure controller 4 is fed back dual pressure controller 6, in turn
It is communicated by CAN bus connection line 81 and vehicle CAN bus 8.System Priority is worked using dual pressure controller 6, when high voltage-controlled
When device 6 processed works normally, low pressure controller 4 is in standby, and does not consume the electric energy of low-tension supply, is not also that electric powered steering pumps
2 input voltages.When 6 non-normal working of dual pressure controller（Dual pressure controller 6 can not obtain voltage, height from vehicle power battery 7
Crimping path loss bad situations such as）, such signal inputs to low pressure controller 4 by dual pressure controller 6, and low pressure controller 4 is got started
Work drives 2 work of electric powered steering pump by low-pressure system.Meanwhile low pressure controller 4 is by working signal（Voltage, operating temperature
Deng）Dual pressure controller 6 is fed back to by low-voltage control line 82, and then passes through CAN bus connection line 81 and vehicle CAN bus
8 communications, show electro-hydraulic system working condition, prompt driver to do manipulation appropriate, it is ensured that vehicle driving safety.Electric rotating
It is made of motor 22 and mechanical pump 23 to pump 2, is connected by flexible clutch, motor 22 drives mechanical pump 23 to work.Described
Motor 22 is using double drive motors, i.e. two groups of stators and rotor（It is independent of each other）, can be controlled, be driven by low pressure and high pressure respectively
Dynamic motor work, 22 two stators in the inside of motor（High voltage stator 222, low pressure stator 223）With a rotor（Share rotor
221）, two stators use different coils, correspond to high pressure, low voltage control, the shared rotor of two stators respectively.
Embodiment 1：
Referring to Fig. 1 to Fig. 4, a kind of high-low pressure double source controls electric hydraulic power-assisted steering system, including steering reservoir 1, turns
To pump and turning machine 3, the steering reservoir 1 is communicated through oil inlet pipe 11 with steering pump, and steering pump is through pressure duct 21 and steering
Machine 3 communicates, and turning machine 3 is communicated through low pressure line 31 with steering reservoir 1；The steering pump is that electric powered steering pumps 2, the electric powered steering
Pump 2 input terminal successively after low-voltage alternating-current connection line 41, low pressure controller 4, low-voltage direct connection line 51 with low tension
Source 5 is electrically connected, and the input terminal of electric powered steering pump 2 is successively through high-voltage alternating connection line 61, dual pressure controller 6, high straightening
It is electrically connected with vehicle power battery 7 after stream connection line 71.
A kind of application method of above-mentioned high-low pressure double source control electric hydraulic power-assisted steering system, the application method include
The cycle of the cycle of steering hydraulic oil at least once, a steering hydraulic oil refers to：Steering hydraulic oil first from steering reservoir 1 through into
Oil pipe line 11 is flowed into electric powered steering pump 2 and is pressurized, and steering hydraulic oil after supercharged is flowed out from electric powered steering pump 2 again, and
It is flowed into turning machine 3 through pressure duct 21, the steering hydraulic oil acted on after turning machine 3 returns to steering reservoir through low pressure line 31
1 to complete the cycle of a steering hydraulic oil；Wherein, high voltage-controlled when steering hydraulic oil is pressurized in electric powered steering pump 2
The high voltage direct current that vehicle power battery 7 inputs is converted to High Level AC Voltage to drive electric powered steering to pump 2 by device 6 processed, and high pressure is handed over
The frequency of galvanic electricity determines the flow of the hydraulic oil of 2 output of electric powered steering pump, meanwhile, low pressure controller 4 is in standby, with
Afterwards, if 6 cisco unity malfunction of dual pressure controller, at this point, low pressure controller 4 is started to work, low pressure controller 4 is by low-tension supply 5
The low-voltage DC of input is converted to low-voltage AC to drive electric powered steering to pump 2, and the frequency of low-voltage AC determines electric rotating
To the flow of the hydraulic oil of 2 output of pump.
Embodiment 2：
Substance with embodiment 1, the difference is that：
Low pressure controller 4 carries out signal with dual pressure controller 6 by low-voltage control line 82 and connect, and dual pressure controller 6 is logical
CAN bus connection line 81 is crossed to connect with the progress signal of vehicle CAN bus 8.
If 6 cisco unity malfunction of dual pressure controller, at this point, dual pressure controller 6 by the signal of cisco unity malfunction through low pressure
Control circuit 82 inputs to low pressure controller 4 to start low pressure controller 4, and then, low pressure controller 4 after startup is by its work
Signal feeds back to vehicle CAN bus 8 through low-voltage control line 82, dual pressure controller 6, CAN bus connection line 81 successively to carry out
Communication to show electro-hydraulic system working condition, and makes manipulation prompt.
Embodiment 3：
Substance with embodiment 2, the difference is that：
When dual pressure controller 6 works, vehicle CAN bus 8 exports dual pressure controller 6 through CAN bus connection line 81
The frequency of High Level AC Voltage controlled.
When low pressure controller 4 works, vehicle CAN bus 8 successively through CAN bus connection line 81, dual pressure controller 6,
Low-voltage control line 82 controls the frequency for the low-voltage AC that low pressure controller 4 exports.
Embodiment 4：
Substance with embodiment 1, the difference is that：
The electric powered steering pump 2 includes motor 22 and mechanical pump 23, and the input terminal of motor 22 is connect with low-voltage alternating-current respectively
Circuit 41, high-voltage alternating connection line 61 are electrically connected, and the output end of motor 22 is connected by flexible clutch and mechanical pump 23
It connects, the mechanical oil inlet 231 in mechanical pump 23 is communicated with oil inlet pipe 11, the mechanical oil outlet 232 in mechanical pump 23 and high pressure
Pipeline 21 communicates.The motor 22 is double drive motors, including 221, high voltage stators 222 of a shared rotor and a low pressure
Stator 223, and high voltage stator 222, low pressure stator 223 share the same shared rotor 221.
Embodiment 5：
Substance with embodiment 2, the difference is that：
It is high voltage direct current to be flowed through in the high voltage direct current connection line 71, and the size of the high voltage direct current is 400-
700VDC, it is High Level AC Voltage to flow through in the high-voltage alternating connection line 61, and the size of the High Level AC Voltage is 196-
380VAC.It is low-voltage DC to be flowed through in the low-voltage direct connection line 51, and the size of the low-voltage DC is 12-
24VDC, it is low-voltage AC to flow through in the low-voltage alternating-current connection line 41, and the size of the low-voltage AC is 5-
17VAC。
Claims (6)
1. a kind of high-low pressure double source controls electric hydraulic power-assisted steering system, including steering reservoir（1）, steering pump and turning machine
（3）, the steering reservoir（1）Through oil inlet pipe（11）It is communicated with steering pump, steering pump is through pressure duct（21）With turning machine（3）
It communicates, turning machine（3）Through low pressure line（31）With steering reservoir（1）It communicates, it is characterised in that：
The steering pump pumps for electric powered steering（2）, electric powered steering pump（2）Input terminal successively through low-voltage alternating-current connection line
（41）, low pressure controller（4）, low-voltage direct connection line（51）Afterwards with low-tension supply（5）It is electrically connected, electric powered steering pump
（2）Input terminal successively through high-voltage alternating connection line（61）, dual pressure controller（6）, high voltage direct current connection line（71）Afterwards with
Vehicle power battery（7）It is electrically connected.
2. a kind of high-low pressure double source according to claim 1 controls electric hydraulic power-assisted steering system, it is characterised in that：Institute
State electric powered steering pump（2）Including motor（22）With mechanical pump（23）, motor（22）Input terminal respectively with low-voltage alternating-current connecting line
Road（41）, high-voltage alternating connection line（61）It is electrically connected, motor（22）Output end pass through flexible clutch and mechanical pump
（23）Connection, mechanical pump（23）In mechanical oil inlet（231）With oil inlet pipe（11）It communicates, mechanical pump（23）In machinery go out
Hydraulic fluid port（232）With pressure duct（21）It communicates.
3. a kind of high-low pressure double source according to claim 2 controls electric hydraulic power-assisted steering system, it is characterised in that：Institute
State motor（22）For double drive motors, including a shared rotor（221）, a high voltage stator（222）With a low pressure stator
（223）, and high voltage stator（222）, low pressure stator（223）Share the same shared rotor（221）.
4. a kind of high-low pressure double source according to claim 1,2 or 3 controls electric hydraulic power-assisted steering system, feature exists
In：The low pressure controller（4）Pass through low-voltage control line（82）With dual pressure controller（6）Carry out signal connection, the high pressure
Controller（6）Pass through CAN bus connection line（81）With vehicle CAN bus（8）Carry out signal connection.
5. a kind of high-low pressure double source according to claim 1,2 or 3 controls electric hydraulic power-assisted steering system, feature exists
In：The high voltage direct current connection line（71）In to flow through be high voltage direct current, the size of the high voltage direct current is 400-
700VDC, the high-voltage alternating connection line（61）In to flow through be High Level AC Voltage, the size of the High Level AC Voltage is 196-
380VAC。
6. a kind of high-low pressure double source according to claim 1,2 or 3 controls electric hydraulic power-assisted steering system, feature exists
In：The low-voltage direct connection line（51）In to flow through be low-voltage DC, the size of the low-voltage DC is 12-
24VDC, the low-voltage alternating-current connection line（41）In to flow through be low-voltage AC, the size of the low-voltage AC is 5-
17VAC。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880992.7U CN207875753U (en) | 2017-12-28 | 2017-12-28 | High-low pressure double source controls electric hydraulic power-assisted steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880992.7U CN207875753U (en) | 2017-12-28 | 2017-12-28 | High-low pressure double source controls electric hydraulic power-assisted steering system |
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| Publication Number | Publication Date |
|---|---|
| CN207875753U true CN207875753U (en) | 2018-09-18 |
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ID=63504438
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721880992.7U Active CN207875753U (en) | 2017-12-28 | 2017-12-28 | High-low pressure double source controls electric hydraulic power-assisted steering system |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497963A (en) * | 2019-07-25 | 2019-11-26 | 东风商用车有限公司 | A kind of electric powered steering oil pump assy application method |
| CN110509985A (en) * | 2019-07-25 | 2019-11-29 | 东风商用车有限公司 | A kind of application method of EHPS system |
-
2017
- 2017-12-28 CN CN201721880992.7U patent/CN207875753U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110497963A (en) * | 2019-07-25 | 2019-11-26 | 东风商用车有限公司 | A kind of electric powered steering oil pump assy application method |
| CN110509985A (en) * | 2019-07-25 | 2019-11-29 | 东风商用车有限公司 | A kind of application method of EHPS system |
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