CN208248288U - A kind of vehicle-mounted double source steering boost system - Google Patents
A kind of vehicle-mounted double source steering boost system Download PDFInfo
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- CN208248288U CN208248288U CN201820183288.4U CN201820183288U CN208248288U CN 208248288 U CN208248288 U CN 208248288U CN 201820183288 U CN201820183288 U CN 201820183288U CN 208248288 U CN208248288 U CN 208248288U
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Abstract
The utility model relates to a kind of vehicle-mounted double source steering boost systems, including the high voltage power battery being arranged on automobile and low tension battery, high voltage power battery connects the inverter module in DCAC controller, low tension battery connects the inverter module in DCAC controller by DC boosting unit, and inverter module connects the steering motor of automobile；High voltage power battery connects precharge unit, precharge unit parallel connection S2 relay by S1 relay.Steering motor uses traditional ac three-phase asynchronous motor or permanent magnet synchronous motor, and operating voltage is AC220V or AC380V.Double source input processing is used from DCAC controller input side.The program guarantees to have steering not only convenient to carry out while output always when either normal vehicle or failure but also there is no interference.
Description
Technical field
The utility model relates to automotive field, especially a kind of vehicle-mounted double source steering boost system.
Background technique
Power steering is that driver is assisted to make automobile steering adjustment, mitigates the firmly intensity for beating steering wheel for driver, when
So, power steering effect also certain in the safety of running car, economy, the power-assisted steering system configured on automobile at present
System can substantially be divided into three classes, mechanical type hydraulic power steering system, electronic hydraulic power-assisted steering system and electric boosted turn
To system, present electric boosting steering system mainly uses two kinds of technologies: technical solution 1, steering motor are using low-voltage direct
Motor (12V or 24V) when vehicle high-voltage is normal, is used to turn the DC high-voltage of high-voltage energy storage unit by DC-DC converter
It is melted into low-voltage DC, while being powered to power-assisted steering motor and low tension battery；When vehicle high-voltage failure, DC-DC converter does not have
There is low pressure output, is powered automatically by the A-battery to the power-assisted steering motor at this time.
Technical solution 2, steering motor use double winding permanent magnet synchronous motor, and motor uses two sets of three-phase windings, Yi Taogao
Coil windings are pressed, operating voltage is 380V or 220V alternating current；A set of low-voltage coil winding, operating voltage are 17V alternating current；Two
Set winding is respectively connected to different electrical power, it is ensured that when high voltage power battery loses, power-assisted steering motor is remained to by low pressure vehicle
The power supply of 24V-DC battery works normally, and steering wheel movement is still reliable.
The shortcomings that above two scheme: the first scheme mesolow direct current generator volume is bigger than normal, is not easy to realize；
Second scheme permanent magnet synchronous motor when high pressure works normally, low-pressure side can because back-emf there are due to low pressure
Accumulator feeding, although its feed current very little, feed voltage reaches DC30V+, the long-term existence of voltage can on vehicle its
He interferes and impacts ECU equipment.
Utility model content
Purpose of the utility model is to solve defects of the existing technology, provide a kind of vehicle-mounted double source power steering
System.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of vehicle-mounted double source steering boost system, including the high voltage power battery being arranged on automobile and low tension battery,
High voltage power battery connects the inverter module in DCAC controller, and low tension battery connects DCAC control by DC boosting unit
Inverter module in device, inverter module connect the steering motor of automobile；High voltage power battery passes through the connection precharge of S1 relay
Unit, precharge unit parallel connection S2 relay；
Inverter module includes resistance R1, capacitor C1, diode D1, diode D2, diode D3, diode D4, diode
D5, diode D6, diode D7, triode Q1, triode Q2, triode Q3, triode Q5, triode Q6, triode Q7,
In, diode D2 is in parallel with triode Q1, and diode D3 is in parallel with triode Q2, and diode D4 is in parallel with triode Q3, two poles
Pipe D5 is in parallel with triode Q5, and diode D6 is in parallel with triode Q6, and diode D7 is in parallel with triode Q7；
The U column of the collector of the anode of diode D2 and triode Q1 connection steering motor, the anode of diode D3 with
And the V column of the collector connection steering motor of triode Q2, the collector connection of the anode and triode Q3 of diode D4 turn
To the W column of motor；
The anode of high voltage power battery passes through the anode of resistance R1 connection capacitor C1, the positive connecting triode Q1 of capacitor C1
Emitter, the cathode connecting triode Q5 collector of capacitor C1, the anode of the cathode connecting diode D1 of commutator transformer, two
The anode of the cathode connection capacitor C1 of pole pipe D1；
The cathode connecting triode Q5 of the high voltage power battery and commutator transformer, triode Q6, the collection of triode Q7
Electrode.
Further, the S1 relay connects DCAC controller, and DCAC controller controls S2 relay and opens and closes.
Further, the DCAC controller connects entire car controller VCU, entire car controller VCU connection power battery management
System BMS, power battery management system BMS control S1 relay and open and close.
Further, in the normal situation of high-tension apparatus, entire car controller VCU sends high level signal by IO (EN) pin
DCAC controller is waken up, DCAC controller receives control steering motor operation after EN wake-up signal.
Further, which is characterized in that after being necessary to switch off high voltage supply because of failure because of mobile unit, entire car controller VCU root
It determines that the EN enable signal for being sent to DCAC controller is to continue with according to the speed detected effectively still to forbid.
Further, when being necessary to switch off high pressure because of failure in vehicle driving, the speed > that entire car controller VCU is detected is soft
When part setting value, entire car controller VCU will maintain the EN enable signal continuous and effective for being sent to DCAC controller.
Further, it when the input voltage value < software set value that DCAC controller is detected according to it, automatically switches to low
Press storage battery power supply；
Further, when speed < software set value, entire car controller VCU will forbid EN enable signal, at DCAC controller
In shutdown status, it is not involved in work.
Further, the steering motor be threephase asynchronous machine or permanent magnet synchronous motor, operating voltage be AC220V or
AC380V。
Further, DC boosting unit includes transformer T1, and transformer T1 input is connected low by high-frequency inverter circuit
Press battery, transformer T1 output end connects rectifier filter circuit, rectifier filter circuit by voltage sensor S and
Support Capacitor C1 connection inverter module.
The utility model has the following beneficial effects: the steering motor of the utility model still use it is traditional phase asynchronous
Motor or permanent magnet synchronous motor, operating voltage are AC220V or AC380V.It is inputted from DCAC controller input side using double source
Processing.The program guarantees have steering not only convenient to carry out while output always when either normal vehicle or failure but also be not present
Interference.
Detailed description of the invention
Fig. 1 is the system schematic of the utility model；
Fig. 2 is Tthe utility model system low pressure basic schematic diagram；
Fig. 3 is DCAC course changing control strategy schematic diagram when Tthe utility model system normally goes up high-voltage electricity；
Fig. 4 is in the operation of the utility model vehicle because of steering control when equipment fault causes power battery high pressure that must switch
Make tactful schematic diagram.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawings of the specification.
As shown in Figure 1 and Figure 2, a kind of vehicle-mounted double source steering boost system, including the high voltage power battery being arranged on automobile
1 and low tension battery 2, high voltage power battery connects the inverter module in DCAC controller, and low tension battery passes through DC boosting
Unit 6 connects the inverter module 3 in DCAC controller, and inverter module 3 connects the steering motor 4 of automobile；High voltage power battery 1 is logical
Cross S1 relay connection precharge unit 5,5 parallel connection S2 relay of precharge unit.
DC boosting unit 6 includes transformer T1, and transformer T1 input connects low pressure electric power storage by high-frequency inverter circuit
Pond, transformer T1 output end connect rectifier filter circuit, and rectifier filter circuit passes through voltage sensor S and support electricity
Hold C1 connection inverter module 3.
Inverter module 3 includes resistance R1, capacitor C1, diode D1, diode D2, diode D3, diode D4, diode
D5, diode D6, diode D7, triode Q1, triode Q2, triode Q3, triode Q5, triode Q6, triode Q7,
In, diode D2 is in parallel with triode Q1, and diode D3 is in parallel with triode Q2, and diode D4 is in parallel with triode Q3, two poles
Pipe D5 is in parallel with triode Q5, and diode D6 is in parallel with triode Q6, and diode D7 is in parallel with triode Q7；
The U column of the collector of the anode of diode D2 and triode Q1 connection steering motor, the anode of diode D3 with
And the V column of the collector connection steering motor of triode Q2, the collector connection of the anode and triode Q3 of diode D4 turn
To the W column of motor；
The anode of high voltage power battery passes through the anode of resistance R1 connection capacitor C1, the positive connecting triode Q1 of capacitor C1
Emitter, the cathode connecting triode Q5 collector of capacitor C1, the anode of the cathode connecting diode D1 of commutator transformer, two
The anode of the cathode connection capacitor C1 of pole pipe D1；
The cathode connecting triode Q5 of high voltage power battery and commutator transformer, triode Q6, the collector of triode Q7.
The control principle of this system is as follows: as shown in Figure 1 and Figure 2, in vehicle normally upper high-voltage electricity, power battery management
System BMS controls S1 relay closure, and 1 voltage of high voltage power battery is started to charge by precharge unit 5 to capacitor C1, DCAC
The MCU of controller calculates input voltage value by voltage sensor S sampling, when input voltage >=software set value, MCU control
Then S2 relay closure determines whether that steering motor 4 is driven to work according to the control instruction of whole-control system VCU；
When vehicle high-voltage failure, power battery management system BMS can send fault data and give whole-control system VCU,
BMS controls S1 relay and disconnects later.The input voltage value that DCAC controller detects≤software set value and full-vehicle control system
System VCU be sent to DCAC controller operation order it is still effective when, DCAC controller control S2 relay disconnect, meanwhile,
The high-frequency inverter circuit that DCAC controller controls commutator transformer primary side is started to work, at this point, input power will be by low pressure electric power storage
Pond 2 provides, voltage needed for meeting steering motor 4, guarantees that steering system operates normally.
Transformer T1 primary side high-frequency inverter circuit can be recommend, half-bridge, full-bridge, push-pull ortho-exciting, double tube positive exciting, active nationality
The circuit topologies such as position normal shock, resonant reset forward and asymmetrical half-bridge；Secondary side rectifier filter circuit can be without output
It the halfwave rectifier of filter inductance, full-wave rectification, full-bridge rectification and recommends, normal shock rectification circuit, rectifier diode can change into together
Rectifying tube is walked, on-state loss is reduced.
Transformer T1 realizes the transmission of energy using transformer leakage inductance L1 energy, is not required to output inductor.Circuit structure
Simply, it is easy to accomplish Sofe Switch, using opened loop control, permanent duty cycle plays transformation and isolation, and conversion efficiency is high.
The specific control strategy of the system is as follows:
As shown in Figure 3, Figure 4, after vehicle powers on, in the normal situation of high-tension apparatus, entire car controller VCU can pass through its IO
Pin (EN signal) sends useful signal and wakes up DCAC controller, and DCAC controller receives EN wake-up signal rear-guard and moves steering motor
Operation.
Vehicle occurs in the process of moving in the case that equipment fault causes high-tension apparatus to be necessary to switch off, entire car controller
VCU, which can determine that the EN enable signal for being sent to DCAC controller is to continue with according to the speed detected, effectively still to be forbidden；Such as
Fruit at this time vehicle speed > VCU software set value when, whole-control system VCU will maintain the enabled letter of EN for being sent to DCAC controller
Number continuous and effective, when input voltage value < software set value and EN effective that DCAC controller detects, DCAC controller will
Control commutator transformer primary side high-frequency inverter circuit puts into operation, and steering system provides energy by low tension battery at this time, it is ensured that
Steering is not lost；Conversely, VCU will forbid EN enable signal, DCAC is in shutdown status, is not involved in work.
The utility model is not only suitable for the commercial vehicle system of DC24V voltage, is also applied for the riding of DC12V voltage class
The systems such as vehicle, logistic car, commutator transformer 5 can be realized by autonomous Design, can also be bought direct current mature in the market and be become
Parallel operation realizes this application.During system is constituted, DC boosting module can be individually present with DCAC controller respectively as two components,
DC boosting module can also be integrated in inside DCAC controller.
The steering motor of the utility model still uses traditional ac three-phase asynchronous motor or permanent magnet synchronous motor, work
Making voltage is AC220V or AC380V.Double source input processing is used from DCAC controller input side.No matter the program guarantees vehicle
There is steering not only convenient to carry out while output when being normal or failure always but also interference is not present.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technology, then the utility model is also intended to include these modifications and variations.
Claims (10)
1. a kind of vehicle-mounted double source steering boost system, including the high voltage power battery being arranged on automobile and low tension battery,
It is characterized in that, high voltage power battery connects the inverter module in DCAC controller, and low tension battery is connected by DC boosting unit
The inverter module in DCAC controller is connect, inverter module connects the steering motor of automobile；High voltage power battery passes through S1 relay
Connect precharge unit, precharge unit parallel connection S2 relay；
Inverter module includes resistance R1, capacitor C1, diode D1, diode D2, diode D3, diode D4, diode D5, and two
Pole pipe D6, diode D7, triode Q1, triode Q2, triode Q3, triode Q5, triode Q6, triode Q7, wherein two
Pole pipe D2 is in parallel with triode Q1, and diode D3 is in parallel with triode Q2, and diode D4 is in parallel with triode Q3, diode D5 with
Triode Q5 is in parallel, and diode D6 is in parallel with triode Q6, and diode D7 is in parallel with triode Q7；
The U column of the collector connection steering motor of the anode and triode Q1 of diode D2, the anode of diode D3 and three
The collector connection of the V column of the collector connection steering motor of pole pipe Q2, the anode and triode Q3 of diode D4 turns to electricity
The W column of machine；
The anode of high voltage power battery passes through the anode of resistance R1 connection capacitor C1, the hair of the positive connecting triode Q1 of capacitor C1
Emitter-base bandgap grading, the cathode connecting triode Q5 collector of capacitor C1, the anode of the cathode connecting diode D1 of commutator transformer, diode
The anode of the cathode connection capacitor C1 of D1；
The cathode connecting triode Q5 of the high voltage power battery and commutator transformer, triode Q6, the collector of triode Q7.
2. a kind of vehicle-mounted double source steering boost system according to claim 1, which is characterized in that the S1 relay connection
DCAC controller, DCAC controller control S2 relay and open and close.
3. a kind of vehicle-mounted double source steering boost system according to claim 2, which is characterized in that the DCAC controller connects
Connect entire car controller VCU, entire car controller VCU connection power battery management system BMS, power battery management system BMS control
S1 relay opens and closes.
4. a kind of vehicle-mounted double source steering boost system according to claim 3, which is characterized in that the normal feelings of high-tension apparatus
Under condition, entire car controller VCU sends high level signal by I/O pin and wakes up DCAC controller, and DCAC controller receives EN wake-up
Steering motor operation is controlled after signal.
5. a kind of vehicle-mounted double source steering boost system according to claim 3, which is characterized in that because mobile unit is because of failure
After being necessary to switch off high voltage supply, entire car controller VCU determines that the EN for being sent to DCAC controller makes according to the speed detected
Energy signal, which is to continue with, effectively still to be forbidden.
6. a kind of vehicle-mounted double source steering boost system according to claim 5, which is characterized in that because of failure in vehicle driving
And when being necessary to switch off high pressure, when the speed > software set value that entire car controller VCU is detected, entire car controller VCU will be maintained
It is sent to the EN enable signal continuous and effective of DCAC controller.
7. a kind of vehicle-mounted double source steering boost system according to claim 6, which is characterized in that DCAC controller is according to it
When the input voltage value < software set value detected, low tension battery power supply is automatically switched to.
8. a kind of vehicle-mounted double source steering boost system according to claim 5, which is characterized in that speed < software set value
When, entire car controller VCU will forbid EN enable signal, and DCAC controller is in shutdown status, is not involved in work.
9. a kind of vehicle-mounted double source steering boost system according to claim 1, which is characterized in that the steering motor is three
Phase Induction Machines or permanent magnet synchronous motor, operating voltage are AC220V or AC380V.
10. a kind of vehicle-mounted double source steering boost system according to claim 1, which is characterized in that the DC boosting list
Member includes transformer T1, and transformer T1 input connects low tension battery by high-frequency inverter circuit, and transformer T1 output end connects
Rectifier filter circuit is connect, rectifier filter circuit connects inverter module with Support Capacitor C1 by voltage sensor S.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820183288.4U CN208248288U (en) | 2018-02-02 | 2018-02-02 | A kind of vehicle-mounted double source steering boost system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820183288.4U CN208248288U (en) | 2018-02-02 | 2018-02-02 | A kind of vehicle-mounted double source steering boost system |
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| CN208248288U true CN208248288U (en) | 2018-12-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588367A (en) * | 2019-09-12 | 2019-12-20 | 安徽合力股份有限公司 | High-voltage lithium battery forklift control system and control method thereof |
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2018
- 2018-02-02 CN CN201820183288.4U patent/CN208248288U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588367A (en) * | 2019-09-12 | 2019-12-20 | 安徽合力股份有限公司 | High-voltage lithium battery forklift control system and control method thereof |
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