CN209305649U - A kind of steering pump electric machine control system for electric car - Google Patents
A kind of steering pump electric machine control system for electric car Download PDFInfo
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- CN209305649U CN209305649U CN201822242392.9U CN201822242392U CN209305649U CN 209305649 U CN209305649 U CN 209305649U CN 201822242392 U CN201822242392 U CN 201822242392U CN 209305649 U CN209305649 U CN 209305649U
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Abstract
The utility model discloses a kind of steering pump electric machine control systems for electric car, it include: high-tension battery, A-battery, Oil pump electrical machinery, main control unit module, high pressure DCAC module and the low voltage transition for exporting the A-battery is to drive the boost DC/DC module of the Oil pump electrical machinery high voltage, in which: the main control unit module is connect with the high pressure DCAC module and the boost DC/DC module；The Oil pump electrical machinery is connect with the high pressure DCAC module；The high-tension battery is connect with the high pressure DCAC module；The A-battery is connect with the boost DC/DC module；The boost DC/DC module is connect with the high pressure DCAC module；The technical solution of the utility model realizes the double source control of electric car steering pump motor, the robustness of steering system can be improved, meet security requirement of the electric car to steering system by increasing boost DC/DC modular circuit.
Description
Technical field
The utility model relates to electric vehicle engineering fields, in particular to a kind of steering oil for electric car
Pump motor control system.
Background technique
The atmospheric warming environment of current rigorous, and nervous petroleum resources reserve state, environmentally protective zero-emission it is pure
Electric car becomes the main flow direction of China Automobile Industry, and Development of EV has become the grand strategy layout of automobile industry,
Emerging electric car Industry Quick Development has more, higher requirement for key components and parts.
The steering system of electric car is divided into two classes at present: electric passenger vehicle uses electric boosted turn due to the light mainstream in chassis
To system (EPS) scheme；Electric commercial vehicle (including the special vehicles such as bus, logistic car, environmental sanitation) needs because vehicle body is heavier
Use more powerful hydraulic circuit servo steering system.For example, the hydraulic circuit servo steering system of electric commercial vehicle is logical
Cross the power steering function of dual pressure controller control oil pump motor realization.
Currently, high-pressure oil pump electric machine controller technical solution is conventional three-phase inverter scheme, passes through DCAC inversion unit
Exchange electric drive Oil pump electrical machinery and oil circuit that high-tension battery DC inverter is variable ratio frequency changer pressure-variable are loaded.Because of electric vehicle
Complexity and maturity there is no conventional fuel oil overall height, vehicle trouble probability is relatively higher, and high-pressure system is once occur serious
Because collision accident activation collision alarm can all trigger vehicle defencive function, vehicle immediately enters cutoff high electricity for failure or vehicle
Protection mechanism, vehicle will lose power steering because broken height is pressed at this time, and then lead to the immovable influence traffic of vehicle
Or the seriousness of aggravation collision accident.
In addition, according to " electric motor coach safety specification " that in November, 2016 Ministry of Industry and Information, China issues, in 4.5.2,
In vehicle travel process, when there is the vehicle abnormality situation for needing vehicle actively to break B grades of high-voltage electricity, it is greater than 5km/h in speed
When should keep steering system maintain power-assisted state or at least keep breaking again after power steering state 30s B grade it is electric.The condition requires to turn
It is also required for maintaining at least function of 30s when to system without high pressure conditions, it is clear that traditional three-phase inverter scheme is not able to satisfy
The laws and regulations requirement.
The steering system power supply how being embodied as except Oil pump electrical machinery offer high-tension battery, promotes steering pump motor control
The safety of system is the current technical issues that need to address.
It should be noted that information is only used for reinforcing the background to the utility model disclosed in above-mentioned background technology part
Understanding, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Utility model content
The purpose of this utility model is to provide a kind of steering pump electric machine control systems for electric car, for mentioning
Rise safety, the robustness of Oil pump electrical machinery control system.
The purpose of this utility model is achieved by following technical proposals:
A kind of steering pump electric machine control system for electric car, including high-tension battery, A-battery, oil pump electricity
Machine, main control unit module, high pressure DCAC module and the low voltage transition for exporting the A-battery are described in driving
The boost DC/DC module of the high voltage of Oil pump electrical machinery, in which: the main control unit module and the high pressure DCAC module and institute
State the connection of boost DC/DC module；The Oil pump electrical machinery is connect with the high pressure DCAC module；The high-tension battery and the high pressure
The connection of DCAC module；The A-battery is connect with the boost DC/DC module；The boost DC/DC module and the high pressure
The connection of DCAC module.
In above scheme, the boost DC/DC module includes the inverter circuit and rectification circuit being connected.
In above scheme, the high pressure DCAC module includes three half-bridge circuits in parallel；Each half-bridge circuit is each
From including two concatenated switching devices, one diode of both ends inverse parallel of the switching device.
In above scheme, the high pressure DCAC module further includes first capacitor, and the first capacitor is connected in parallel on the half-bridge
Circuit both ends.
In above scheme, the system also includes the high pressure being connected between the high-tension battery and the high pressure DCAC is pre-
Mold filling block.
In above scheme, the high pressure preliminary filling module includes: first contactor, the first preliminary filling resistance, the 7th diode, institute
The anode of the high-tension battery and the direct current of the high pressure DCAC module are connected to after stating first contactor the 7th diode of series connection
Between end；The first preliminary filling resistance is in parallel with the first contactor；The control terminal of the first contactor and the master control
Unit module connection.
In above scheme, the main control unit module and the high pressure DCAC module, the high pressure preliminary filling module, the liter
The control terminal of pressure DCDC module is separately connected, and high pressure DCAC module, the high pressure preliminary filling module, the boosting are stated described in control
The work of DCDC module；Wherein, when the system is in normal mode, the high-tension battery by the high pressure preliminary filling module and
The high pressure DCAC module exports electric energy to the Oil pump electrical machinery system, and the boost DC/DC module does not work；In the system
When in high-tension battery abnormal power-down mode, the A-battery passes through the boost DC/DC module and the high pressure DCAC module
Electric energy is exported to the Oil pump electrical machinery system.
The utility model also provides a kind of electric car, and the electric car includes in above-mentioned technical proposal for electronic
The steering pump electric machine control system of automobile.
Technical solution provided by the embodiment of the utility model can include the following benefits:
Technical solution provided by a kind of exemplary embodiment of the utility model compared with prior art, has following effect
Fruit: can be reverse into high-voltage electricity from A-battery cut-off galvanic electricity while taking electricity to directly drive Oil pump electrical machinery from high-tension battery, drive
Dynamic high-pressure oil pump motor load realizes double source control.This programme is by multiplexing high voltage component and vehicle-mounted A-battery, based on tradition
Scheme is less by project, completes after lower-cost modification, convenient for promoting and application, meets electric car regulation and controls to turning to
The requirement of system processed.
When understanding, above general description and following detailed description be only it is exemplary and explanatory, can not
Limit the utility model.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets the utility model
Embodiment, and be used to explain the principles of the present invention together with specification.It should be evident that the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of frame of steering pump electric machine control system for electric car provided by the embodiment of the utility model
Figure；
Fig. 2 is a kind of portion of steering pump electric machine control system for electric car provided by the embodiment of the utility model
Parallel circuit figure.
Specific embodiment
Illustrative embodiments are described more fully with reference to the drawings.However, illustrative embodiments can be with more
Kind form is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the utility model
Will be more full and complete, and the design of illustrative embodiments is comprehensively communicated to those skilled in the art.Phase in figure
Same appended drawing reference indicates same or similar structure, thus the detailed description that will omit them.
Term "one", " one ", " described " to indicate there are one or more elements/component part/etc.；Term " packet
Include " and " having " to indicate the open meaning being included and refer to that the element/component part/in addition to listing waits it
Outside also may be present other element/component part/etc..
The utility model is described in further detail below by specific embodiment and in conjunction with attached drawing.
As shown in Figure 1, the steering pump electric machine control system provided by the embodiment of the utility model for electric car, packet
It includes high-tension battery 102, A-battery 103, Oil pump electrical machinery 108, main control unit module 101, high pressure DCAC module 106 and is used for
It is to drive the boost DC/DC module 105 of Oil pump electrical machinery high voltage by the low voltage transition that A-battery exports, in which: main control unit
Module 101 is connect with high pressure DCAC module 106 and boost DC/DC module 105；Oil pump electrical machinery 108 and high pressure DCAC module 106
Connection；High-tension battery 102 is connect with high pressure DCAC module 106；A-battery 103 is connect with boost DC/DC module 105；Boosting
DCDC module 105 is connect with high pressure DCAC module 106.
In above scheme, existing A-battery on vehicle has been used, increasing boost DC/DC module realizes double source control,
Meet the power steering demand for maintaining a period of time in relevant laws and regulations to powered-off fault.
Here, vehicle-mounted A-battery can be 12V or 24V, and effect is to provide control for room light and control system
Power supply processed.
As shown in Figure 1, above system further includes the high pressure being connected between high-tension battery 102 and high pressure DCAC module 106
Preliminary filling module 104；Main control unit module 101 and high pressure DCAC module 106, high pressure preliminary filling module 104, boost DC/DC module 105
Control terminal be separately connected, control high pressure DCAC module 106, high pressure preliminary filling module 104, boost DC/DC module 105 work；Its
In, when system is in normal mode, high-tension battery 102 passes through high pressure preliminary filling module 104 and high pressure DCAC module 106 to oil pump
Electric system exports electric energy, and boost DC/DC module 105 does not work；When system is in high-tension battery abnormal power-down mode, boosting
DCDC module 105 starts, and A-battery 103 passes through boost DC/DC module 105 and high pressure DCAC module 106 to Oil pump electrical machinery system
Export electric energy.
Hereinafter, according to circuit diagram to the distributed bidirectional driving charging electricity for electric car of the utility model embodiment
Energy transformation system is described in detail.
As shown in Fig. 2, in the utility model embodiment, boost DC/DC module 205 include the inverter circuit being connected and
Rectification circuit, wherein inverter circuit and A-battery 203 connect, 206 DC terminal of rectification circuit output end and high pressure DCAC module
It is in parallel.
As shown in Fig. 2, high pressure preliminary filling module 204 is used for in high pressure DCAC module 106 in the utility model embodiment
Capacitor is pre-charged, and one end of high pressure preliminary filling module is connected with the anode of high-tension battery, the other end of high pressure preliminary filling module with
The DC terminal of high pressure DCAC module is connected.
Specifically, as shown in Fig. 2, high pressure preliminary filling module further include: first contactor K1, the first preliminary filling resistance R1, the 7th
The anode and high pressure DCAC module of high-tension battery 202 are connected to after the 7th diode D7 of diode D7, first contactor K1 series connection
Between 206 DC terminal；First preliminary filling resistance R1 is in parallel with first contactor K1；The control terminal and master control list of first contactor K1
Element module 201 connects, and the 7th diode D7 is cut-off effect, prevents from increasing the high-voltage electricity after die block starts to the other portions of vehicle
Part power supply.
Wherein, high pressure DCAC module 206 further includes first capacitor device C1 in parallel, the first half-bridge circuit, the second half-bridge electricity
Road and third half-bridge circuit, the first exchange end of the current transformation module is drawn at the midpoint of first half-bridge circuit, described
The second exchange end of the current transformation module is drawn at the midpoint of second half-bridge circuit, and the midpoint of the third half-bridge circuit is drawn
The third of the current transformation module exchanges end；First exchange end, second exchange end and third exchange end with Oil pump electrical machinery 208
Connection.
Further, the first half-bridge circuit, the second half-bridge circuit and third half-bridge circuit respectively include two and concatenated open
Close device Q1 and Q2, Q3 and Q4, Q5 and Q6, one diode of both ends inverse parallel of switching device be D1 and D2, D3 and D4, D5 and
D6, switching tube can be insulated gate bipolar transistor.
Here, main control unit module is connect with the control terminal of Q1, Q2, Q3, Q4, Q5 and Q6 respectively, control Q1, Q2, Q3,
Q4, Q5 and Q6 work.
Specifically, control instruction works main control unit module based on the received.
For example, in above scheme, main control unit module 201 and high pressure DCAC module 206, high pressure preliminary filling module 204, boosting
The control terminal of DCDC module 205 is separately connected, and high pressure DCAC module 206, high pressure preliminary filling module 204, boost DC/DC mould are stated in control
Block 205 works；Wherein, when system is in normal mode of operation, main control unit module 201 detects the voltage of first capacitor device C1
Value reaches the first contactor K1 closure controlled after preset threshold in high pressure preliminary filling module 204, and high-tension battery 202 is to height at this time
206 conveying high-pressure of DCAC module electricity is pressed, high pressure DCAC module 206 exports after high voltage direct current is reverse into adjustable alternating current
Oil supply pump motor 208, Oil pump electrical machinery 208 connect vehicle oil way and complete the Power assisted control turned to, and during which boost DC/DC module 205 is not
Work.
Failure is in system high pressure battery 202 or vehicle collides when leading to abnormal power-down, main control unit module 201
Start boost DC/DC module 205, the low-voltage of A-battery 203 passes through inverter circuit and rectification in boost DC/DC module 205
Circuit variation is that the high voltage being isolated with A-battery voltage is input to high pressure DCAC module 206, and high pressure DCAC module 206 will be high
Straightening galvanic electricity exports oil supply pump motor 208 after being reverse into alternating current, and Oil pump electrical machinery 208 connects vehicle oil way and completes the power-assisted turned to
Control, this function, which can provide power steering, allows driver to operate vehicle completion Vehicular turn or movement.
Steering pump electric machine control system provided by the embodiment of the utility model for electric car, uses boost DC/DC
Module takes electricity from vehicle-mounted A-battery, realizes the dual power supply control of Oil pump electrical machinery, passes through multiplexing high voltage component and oil pump electricity
Machine keeps scheme change smaller, convenient for promoting and applying, meets security requirement of the electric car to steering control system.
The utility model also provides a kind of electric car, and electric car includes in above-mentioned technical proposal for electric car
Steering pump electric machine control system.
Electric car provided by the embodiment of the utility model includes the steering for electric car in above-mentioned technical proposal
Oil pump electrical machinery control system has same technical characteristic, thus is equally taken using boost DC/DC module from A-battery
Electricity, realize Oil pump electrical machinery dual power supply design, relative to traditional scheme modify it is less, increased costs are few, convenient for promote with
Using meeting requirement of the electric car regulation to steering control system.
Those skilled in the art are considering specification and after practicing utility model disclosed herein, will readily occur to practical
Novel other embodiments.This application is intended to cover any variations, uses, or adaptations of the utility model, these
Variations, uses, or adaptations follow the general principle of the utility model and including undocumented skills of the utility model
Common knowledge or conventional techniques in art field.The description and examples are only to be considered as illustrative, the utility model
True scope and spirit are indicated by the following claims.
It should be understood that the utility model is not limited to the accurate knot for being described above and being shown in the accompanying drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model is only wanted by appended right
It asks to limit.
Claims (8)
1. a kind of steering pump electric machine control system for electric car, which is characterized in that including high-tension battery, low tension
Pond, Oil pump electrical machinery, main control unit module, high pressure DCAC module and the low voltage transition for exporting the A-battery are
Drive the boost DC/DC module of the Oil pump electrical machinery high voltage, in which:
The main control unit module is connect with the high pressure DCAC module and the boost DC/DC module；
The Oil pump electrical machinery is connect with the high pressure DCAC module；
The high-tension battery is connect with the high pressure DCAC module；
The A-battery is connect with the boost DC/DC module；
The boost DC/DC module is connect with the high pressure DCAC module.
2. system according to claim 1, which is characterized in that the boost DC/DC module includes the inverter circuit being connected
And rectification circuit.
3. system according to claim 1, which is characterized in that the high pressure DCAC module includes three half-bridge electricity in parallel
Road；Each half-bridge circuit respectively includes two concatenated switching devices, the both ends inverse parallel of the switching device one two
Pole pipe.
4. system according to claim 3, which is characterized in that the high pressure DCAC module further includes first capacitor, described
First capacitor is connected in parallel on the half-bridge circuit both ends.
5. system according to claim 1, which is characterized in that the system also includes be connected to the high-tension battery and institute
State the high pressure preliminary filling module between high pressure DCAC module.
6. system according to claim 5, which is characterized in that the high pressure preliminary filling module includes: first contactor, first
Preliminary filling resistance, the 7th diode, the first contactor connect be connected to after the 7th diode the high-tension battery anode and
Between the DC terminal of the high pressure DCAC module；The first preliminary filling resistance is in parallel with the first contactor；
The control terminal of the first contactor is connect with the main control unit module.
7. system according to claim 6, which is characterized in that the main control unit module and the high pressure DCAC module,
The high pressure preliminary filling module, the control terminal of the boost DC/DC module are separately connected, and high pressure DCAC module, described is stated described in control
High pressure preliminary filling module, boost DC/DC module work；
Wherein, when the system is in normal mode, the high-tension battery passes through the high pressure preliminary filling module and the high pressure
DCAC module exports electric energy to the Oil pump electrical machinery system, and the boost DC/DC module does not work；
When the system is in high-tension battery abnormal power-down mode, the A-battery passes through the boost DC/DC module and institute
It states high pressure DCAC module and exports electric energy to the Oil pump electrical machinery system.
8. a kind of electric car, which is characterized in that the electric car includes as described in any one of claim 1 to 7 is used for
The steering pump electric machine control system of electric car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822242392.9U CN209305649U (en) | 2018-12-29 | 2018-12-29 | A kind of steering pump electric machine control system for electric car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822242392.9U CN209305649U (en) | 2018-12-29 | 2018-12-29 | A kind of steering pump electric machine control system for electric car |
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| CN209305649U true CN209305649U (en) | 2019-08-27 |
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| CN201822242392.9U Active CN209305649U (en) | 2018-12-29 | 2018-12-29 | A kind of steering pump electric machine control system for electric car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110816653A (en) * | 2019-11-15 | 2020-02-21 | 江苏陆地方舟新能源车辆股份有限公司 | Steering and braking integrated machine |
| CN114644037A (en) * | 2020-12-21 | 2022-06-21 | 中车时代电动汽车股份有限公司 | Intelligent steering system of pure electric bus |
-
2018
- 2018-12-29 CN CN201822242392.9U patent/CN209305649U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110816653A (en) * | 2019-11-15 | 2020-02-21 | 江苏陆地方舟新能源车辆股份有限公司 | Steering and braking integrated machine |
| CN114644037A (en) * | 2020-12-21 | 2022-06-21 | 中车时代电动汽车股份有限公司 | Intelligent steering system of pure electric bus |
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