CN109910638A - A kind of motor driven systems and a kind of new-energy automobile - Google Patents
A kind of motor driven systems and a kind of new-energy automobile Download PDFInfo
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- CN109910638A CN109910638A CN201910205227.2A CN201910205227A CN109910638A CN 109910638 A CN109910638 A CN 109910638A CN 201910205227 A CN201910205227 A CN 201910205227A CN 109910638 A CN109910638 A CN 109910638A
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- motor driven
- driven systems
- power supply
- power source
- switch tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a kind of motor driven systems and a kind of new-energy automobile.A kind of motor driven systems, comprising: main power source, accessory power supply, reduction voltage circuit, three phase full bridge circuit and motor；Three phase full bridge circuit connection and driving motor, the two poles of the earth of accessory power supply are separately connected two input terminals of three phase full bridge circuit, and main power source is in parallel with accessory power supply through reduction voltage circuit；In the startup stage of motor driven systems, power needed for accessory power supply provides motor driven systems, after motor driven systems run smoothly, main power source and reduction voltage circuit work provide the power of motor driven systems even running by main power source.The present invention passes through the mutual cooperation between accessory power supply and main power source, accessory power supply is allowed to provide the momentary high power energy of system start-up phase, the service life of main power source can effectively be extended, improve power supply efficiency, and, by increasing reduction voltage circuit, matches the voltage class of main power source and accessory power supply with can be convenient, facilitate application.
Description
Technical field
The present invention relates to motor-drive technique field, in particular to a kind of motor driven systems and a kind of new-energy automobile.
Background technique
In the manufacture production of new-energy automobile, electric machine controller is the core component of new-energy automobile, existing motor control
The power section of device processed, topological structure are generally adopted by three phase full bridge structure, including 6 power switch tubes, the energy of drive axle
Measure source usually only this single energy source of automobile power cell.Since automobile drives electricity needed for the different operation phase
Stream and driving power differ greatly, therefore to automobile power cell this single energy load variations with regard to big, if things go on like this, meeting
Cause automobile batteries aging, the lost of life.
Moreover, in the prior art, when increasing to multiple energy sources to improve load-carrying ability, usually will newly access energy
Amount source and energy source before directly carry out parallel connection, this frame mode require newly-increased energy source voltage class must with before
Energy source it is consistent, therefore voltage class to newly-increased energy source and type have more limitations, using Shortcomings.
Summary of the invention
Greatly in view of driving current needed for prior art automobile and driving power variation, lead to shorter battery life and polyphyly
The problem of voltage class of uniting matching, a kind of motor driven systems and a kind of new-energy automobile of the invention are proposed, to overcome
The above problem.
To achieve the goals above, present invention employs following technical solutions:
According to one aspect of the present invention, a kind of motor driven systems are provided, comprising: main power source, accessory power supply, decompression
Circuit, three phase full bridge circuit and motor；
The three phase full bridge circuit connection simultaneously drives the motor, and the two poles of the earth of the accessory power supply are separately connected the three-phase
Two input terminals of full-bridge circuit, the main power source are in parallel with the accessory power supply through the reduction voltage circuit；It is driven in the motor
The startup stage of dynamic system, power needed for the accessory power supply provides the motor driven systems, in the motor driven system
After system runs smoothly, the main power source and reduction voltage circuit work provide the motor driven systems by the main power source and put down
The power surely run.
Optionally, which includes one or more accessory power supplys.
Optionally, in the deboost phase of the motor driven systems, the reduction voltage circuit work conducting will brake recycling
Energy feedback to the main power source.
Optionally, the main power source is energy type power supply, and the accessory power supply is power-type power supply.
Optionally, the accessory power supply is super capacitor, fuel cell, power lithium battery or aluminum cell.
Optionally, which further includes control circuit, and the control circuit is connect with the reduction voltage circuit, control
Make the work of the reduction voltage circuit.
Optionally, the reduction voltage circuit includes: the first power switch tube, the second power switch tube and the first inductance；
First power switch tube and second power switch tube are connected in series between the two poles of the earth of the main power source,
One pole of the accessory power supply is connect with the homopolarity of the main power source, and another pole of the accessory power supply connects through first inductance
It is connected to the connecting pin of first power switch tube and second power switch tube；It runs smoothly in the motor driven systems
Afterwards, first power switch tube is closed, and second power switch tube is opened and closed repeatedly to adjust the main power source through the drop
The voltage class of volt circuit output.
Optionally, in the deboost phase of the motor driven systems, second power switch tube is first turned on, makes to brake
It recovers energy as first induction charging, then second power switch tube is closed and first power switch tube is beaten
It opens, by the energy feedback of braking recycling to the main power source.
Optionally, which further includes control circuit, and the control circuit connects first power switch
The control terminal of pipe and second power switch tube controls first power switch tube and second function using pwm signal
The opening and closing of rate switching tube.
According to another aspect of the invention, a kind of new-energy automobile is provided, the new-energy automobile is equipped with such as taking up an official post
Motor driven systems described in one.
In conclusion the beneficial effects of the present invention are:
The present invention allows accessory power supply to provide system start-up phase by the mutual cooperation between accessory power supply and main power source
Momentary high power energy can effectively extend the service life of main power source, and main power source can be carried out with lesser electric current
Work, improves the power supply efficiency of main power source, so as to improve the continual mileage of vehicle.Simultaneously as the application is in motor
Control system front end increases level-one reduction voltage circuit, matches the voltage class of main power source and accessory power supply with can be convenient, convenient
Using.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of motor driven systems provided by one embodiment of the present invention；
Fig. 2 is the current diagram for mainly recycling braking energy in embodiment illustrated in fig. 1 by accessory power supply S2；
Fig. 3 is the current diagram for recycling braking energy in embodiment illustrated in fig. 1 by main power source S1.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
In the description of the present application, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for describe the application and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present application, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in application.
Technical concept of the invention is: the present invention makes auxiliary electric by the mutual cooperation between accessory power supply and main power source
Source provides the momentary high power energy of system start-up phase, can effectively extend the service life of main power source, and main power source
It can be worked with lesser electric current, improve the power supply efficiency of main power source, so as to improve the continual mileage of vehicle.Together
When, since the application increases level-one reduction voltage circuit in electric machine control system front end, match main power source and auxiliary with can be convenient
The voltage class of power supply, facilitates application.
Fig. 1 shows a kind of structural schematic diagram of motor driven systems of the application one embodiment offer, such as Fig. 1 institute
Show, the motor driven systems, comprising: main power source S1, accessory power supply S2, reduction voltage circuit, three phase full bridge circuit and motor M1.Its
In, three phase full bridge circuit be existing motor driven systems in conventional arrangement, including power switch tube Q3, Q4, Q5, Q6, Q7 and
Q8, the basic principle of three phase full bridge circuit work are as follows: by controlling the opening and closing of each power switch tube, realize the three-phase of DC power supply
Inversion, with driving motor M1 rotation.Capacitor C1 is power filtering capacitor, the counter electromotive force of motor M1 generation is filtered out, to protect three
Phase full-bridge.
As shown in Figure 1, three phase full bridge circuit connection and driving motor M1, it is complete that the two poles of the earth of accessory power supply S2 are separately connected three-phase
Two input terminals of bridge circuit, main power source S1 are in parallel with accessory power supply S2 through reduction voltage circuit.In the starting rank of motor driven systems
Section, power needed for accessory power supply S2 provides motor driven systems, after motor driven systems run smoothly, main power source S1 and drop
Volt circuit work provides the power of motor driven systems even running by main power source S1, which can be with reference in Fig. 2 or Fig. 3
Shown in startup stage and plateau.
As shown in Figures 2 and 3, by the mutual cooperation between accessory power supply S2 and main power source S1, accessory power supply S2 is allowed to mention
For the momentary high power energy of system start-up phase, main power source S1 can be made with lesser electric current smooth working, effectively extended
The service life of main power source S1, also, since main power source S1 is with lesser current work, thus the power supply efficiency of main power source S1
It is improved, the continual mileage of vehicle thus can be improved.In addition, preferably to match multi-power source voltage grade, this hair
It is bright to increase level-one reduction voltage circuit in electric machine control system front end, so as to easily match the electricity of main power source and accessory power supply
Press grade, facilitate application, further types of accessory power supply S2 can be used in this way, convenient for control accessory power supply S2 volume and at
This.
In the present embodiment, main power source S1 is energy type power supply, the characteristic of energy type power supply be exactly specific energy (Wh/kg) compared with
Height has more lasting fan-out capability, but large current discharging capability is not strong.And accessory power supply S2 is power-type power supply, is supported big
The charge and discharge of multiplying power, but power supply capacity decreases.
It is cooperated by the main power source S1 of energy type and the accessory power supply S2 of power-type, the drive of electric car can be reached
Dynamic power requirement, and different types of power supply can be had complementary advantages.Moreover, by adding level-one decompression electricity for main power source S1
Road reduces voltage class with can be convenient, to match from all kinds of different accessory power supply S2, convenient for control accessory power supply S2
Volume and cost.For example, by the way of traditional directly parallel connection power supply, just being needed for the energy type power supply S1 of 336V
7 super capacitors (maximum voltage 48V) are used in series, and the application passes through the reduction voltage circuit for increasing main power source S1, just
Main power source S1 to 48V can be reduced, to only need 1 super capacitor as accessory power supply S2, solves accessory power supply S2's
Volume and cost problem.In the present embodiment, super capacitor, fuel cell, power lithium battery or aluminium is can be selected in accessory power supply S2
Any one of battery.
In some embodiments of the present application, in the deboost phase of motor driven systems, reduction voltage circuit can also work conducting,
Will brake the energy feedback recycled to main power source S1, to extend the cruising ability of main power source S1, which can refer to Fig. 3 institute
The current diagram shown.Certainly, if accessory power supply S2 also chargeable recycling braking energy, such as super capacitor etc. can also be with
The energy that deboost phase recycles mainly is recovered in accessory power supply S2, which can refer to current diagram shown in Fig. 2.
In some embodiments of the present application, which further includes control circuit, control circuit and decompression electricity
Road connection, controls the work of reduction voltage circuit, to adjust the decompression multiplying power of reduction voltage circuit, so as to adjust main power source S1 through reduction voltage circuit
The voltage class of output, convenient for being adapted to a variety of different types of accessory power supply S2.
In the present embodiment, which includes an accessory power supply S2.And in other reality of the application
It applies in example, which also may include multiple accessory power supply S2, for example, by multiple super capacitor parallel operations, with
Larger current needed for electric motor of automobile M1 starting is provided.
In the embodiment shown in fig. 1, reduction voltage circuit specifically includes: the first power switch tube Q1, the second power switch tube Q2
With the first inductance L1.
First power switch tube Q1 and the second power switch tube Q2 series connection, and be connected between the two poles of the earth of main power source S1, it is auxiliary
A pole of power supply S2 is helped to connect with the homopolarity of main power source S1, the first inductance connection of another pole of accessory power supply S2 to the first power
The connecting pin of switching tube Q1 and the second power switch tube Q2.
The working principle of embodiment illustrated in fig. 1 are as follows:
In the startup stage of motor driven systems, larger current and larger function needed for accessory power supply S2 provides system starting
Rate, and the first power switch tube Q1 closes (cut-off), therefore main power source S1 does not need to undertake the load of motor M1.
After motor driven systems run smoothly, the first power switch tube Q1 opens (conducting), the second power switch tube Q2
It is opened and closed repeatedly, to adjust the voltage class that main power source S1 is exported through reduction voltage circuit, thus output and accessory power supply S2 voltage matches
, the DC power supply used for three phase full bridge and motor M1.
In the deboost phase of motor driven systems, the second power switch tube Q2 is first turned on, and so that braking is recovered energy is the
One inductance L1 charging, then the second power switch tube Q2 is closed, and the first power switch tube Q1 is opened, by the energy of braking recycling
Amount is fed back to main power source S1, and for improving the course continuation mileage of main power source S1, the energy distribution of the process is as shown in Figure 3.Certainly, if
Be accessory power supply S2 be also by charging recycle braking energy, then can also be by more braking energy feedback to accessory power supply
The energy distribution of S2, the process are as shown in Figure 2.
On the basis of embodiment shown in Fig. 1, which further includes control circuit, control circuit for example, by using
Single chip circuit, control circuit connect the first power switch tube Q1 and the second power switch tube Q2 control terminal (i.e. Q1 and Q2's
Base stage), using PWM (Pulse Width Modulation, pulse width modulation) signal control the first power switch tube Q1 and
The opening and closing of second power switch tube Q2, flexibly to reduce the voltage of main power source S1.Also, control circuit can also be set in the present embodiment
It is set to the closed control circuit with feedback loop, to improve the stability of out-put supply.
Disclosed herein as well is a kind of new-energy automobiles, and the new-energy automobile is equipped with electricity described in any embodiment as above
Machine drive system improves new energy vapour so as to protect main power source S1 to have longer service life, higher energy efficiency
The cruising ability of vehicle and service life.
The above description is merely a specific embodiment, under above-mentioned introduction of the invention, those skilled in the art
Other improvement or deformation can be carried out on the basis of the above embodiments.It will be understood by those skilled in the art that above-mentioned tool
Body description only preferably explains that the purpose of the present invention, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of motor driven systems characterized by comprising main power source, accessory power supply, reduction voltage circuit, three phase full bridge circuit
And motor；
The three phase full bridge circuit connection simultaneously drives the motor, and the two poles of the earth of the accessory power supply are separately connected the three phase full bridge
Two input terminals of circuit, the main power source are in parallel with the accessory power supply through the reduction voltage circuit；In the motor driven system
The startup stage of system, power needed for the accessory power supply provides the motor driven systems are transported in the motor driven systems
After row is steady, the main power source and reduction voltage circuit work provide the motor driven systems by the main power source and steadily transport
Capable power.
2. motor driven systems according to claim 1, which is characterized in that the motor driven systems include one or more
The accessory power supply.
3. motor driven systems according to claim 1, which is characterized in that in the braking rank of the motor driven systems
Section, reduction voltage circuit work conducting will brakes the energy feedback that recycles to the main power source.
4. motor driven systems according to claim 1, which is characterized in that the main power source is energy type power supply, described
Accessory power supply is power-type power supply.
5. motor driven systems according to claim 4, which is characterized in that the accessory power supply is super capacitor, fuel
Battery, power lithium battery or aluminum cell.
6. motor driven systems according to claim 1, which is characterized in that the motor driven systems further include control electricity
Road, the control circuit are connect with the reduction voltage circuit, control the work of the reduction voltage circuit.
7. motor driven systems according to claim 1, which is characterized in that the reduction voltage circuit includes: that the first power is opened
Guan Guan, the second power switch tube and the first inductance；
First power switch tube and second power switch tube are connected in series between the two poles of the earth of the main power source, described
One pole of accessory power supply is connect with the homopolarity of the main power source, another pole of the accessory power supply through first inductance connection extremely
The connecting pin of first power switch tube and second power switch tube；After the motor driven systems run smoothly,
First power switch tube is closed, and second power switch tube is opened and closed repeatedly to adjust the main power source through the decompression electricity
The voltage class of road output.
8. motor driven systems according to claim 7, which is characterized in that in the braking rank of the motor driven systems
Section, second power switch tube is first turned on, and so that braking is recovered energy for first induction charging, then second function
Rate switching tube is closed and first power switch tube is opened, by the energy feedback of braking recycling to the main power source.
9. motor driven systems according to claim 7, which is characterized in that the motor driven systems further include control electricity
Road, the control circuit connect the control terminal of first power switch tube and second power switch tube, utilize pwm signal
Control the opening and closing of first power switch tube and second power switch tube.
10. a kind of new-energy automobile, which is characterized in that the new-energy automobile is equipped with described in -9 any one according to claim 1
Motor driven systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910205227.2A CN109910638A (en) | 2019-03-18 | 2019-03-18 | A kind of motor driven systems and a kind of new-energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910205227.2A CN109910638A (en) | 2019-03-18 | 2019-03-18 | A kind of motor driven systems and a kind of new-energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109910638A true CN109910638A (en) | 2019-06-21 |
Family
ID=66965548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910205227.2A Pending CN109910638A (en) | 2019-03-18 | 2019-03-18 | A kind of motor driven systems and a kind of new-energy automobile |
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