CN205986309U - Two power supply circuit , system and electric automobile - Google Patents
Two power supply circuit , system and electric automobile Download PDFInfo
- Publication number
- CN205986309U CN205986309U CN201620760443.5U CN201620760443U CN205986309U CN 205986309 U CN205986309 U CN 205986309U CN 201620760443 U CN201620760443 U CN 201620760443U CN 205986309 U CN205986309 U CN 205986309U
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- power supply
- inverter
- source
- microprocessor
- circuit
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Abstract
The utility model relates to an electric automobile technical field, a two power supply circuit, system and electric automobile who provides, two power supply circuit include dc -to -ac converter, first power, second source and control circuit. When the dc -to -ac converter was in normal operating conditions, first power provided a the low voltage power supply for the dc -to -ac converter, when the dc -to -ac converter was in unusual operating condition, the second source provided the 2nd the low voltage power supply for the dc -to -ac converter, control circuit's input is connected with first power and second source respectively, and control circuit's output and dc -to -ac converter are connected for gather the operating condition of dc -to -ac converter, the operating condition of dc -to -ac converter divide into normal operating condition and unusual operating condition. Control circuit is according to the operating condition of dc -to -ac converter, controls the power supply state of first power or second source to guarantee to also have when a power failure second source to provide the low voltage power supply for the dc -to -ac converter, make the dc -to -ac converter keep normal operating conditions, promoted electric automobile's security performance.
Description
【Technical field】
The utility model is related to electric vehicle engineering field, more particularly to a kind of two-supply circuit, system and electronic
Automobile.
【Background technology】
At present, because the relatively conventional automobile of electric automobile effect on environment is less, its prospect is extensively had an optimistic view of.Electric automobile
Motor machine driving moment travels, and power supply is that the motor of electric automobile provides electric energy, and motor in electric automobile is by the electric energy of power supply
It is converted into mechanical energy, by actuator drives wheel and equipment, or direct drive.
The power supply of electric automobile is typically provided by electrokinetic cell, and the high voltage power supply that electrokinetic cell exports provides low after step-down
To inverter, the power-supply system of inverter is single supply system to voltage source, using single supply circuit, if electric automobile is travelling
During power module go wrong, the abnormal electrical power supply of inverter can be led to, to car load and the person have certain potential safety hazard.
Existing electric automobile generally adopts single supply electric power system, and this single supply electric power system includes battery, direct current turns
The converter of direct current and inverter, external high pressure Power convert is become low-tension supply by the converter of DC-DC, is electric power storage
Charge in pond, battery provides low-tension supply for inverter, and it is to drive that this low-tension supply is converted into suitable alternating current by inverter
System provides power, thus realizing the normal operation of electric automobile.But, when in single supply electric power system, certain circuit module goes out
During existing problem, single supply electric power system is out of service, leads to electric automobile cannot normally run, thus substantially reducing electric automobile
Functional reliability.
【Utility model content】
Inverter single supply circuit for electric automobile goes wrong and leads to the technical problem of abnormal electrical power supply, and this practicality is new
Type embodiment provides a kind of two-supply circuit, system and electric automobile, and technical scheme is as follows：
A kind of two-supply circuit, including：
Inverter；
First power supply, when inverter is in normal operating conditions, the first power supply provides the first low-tension supply for inverter；
Second source, when inverter is in abnormal operation, second source provides the second low-tension supply for inverter；
Control circuit, the input of control circuit is connected with the first power supply and second source respectively, the output of control circuit
End and inverter connect, and for gathering the working condition of inverter, and the working condition according to inverter, control the first power supply
Or the power supply state of second source.
Preferably, control circuit includes：
First switch, and the connection of the first power supply；
Second switch, and second source connection；
First microprocessor, is connected with first switch and second switch respectively；
First communication module, and first microprocessor connection；
Two-supply circuit also includes second communication module, is connected with first communication module and inverter respectively, for
One communication module transmits the work state information of inverter；
First microprocessor receives the work state information of inverter by first communication module, when inverter is normal work
Make state, first microprocessor produces the first control signal and the second control signal, close first by the first control signal and open
Close, second switch is disconnected by the second control signal；When inverter is in abnormal operation, first microprocessor produces the 3rd
Control signal and the 4th control signal, disconnect first switch by the 3rd control signal, close second by the 4th control signal
Switch.
Preferably, control circuit also includes：
Sensor assembly, respectively with the first power supply, second source and first microprocessor connect, for gathering the respectively
The electric current of one power supply and second source and voltage, output current collection signal and voltage acquisition signal；First microprocessor receives
With process voltage acquisition signal and current acquisition signal, export euqalizing current signal；
Second microprocessor, and first microprocessor connection, for receiving euqalizing current signal, believe according to euqalizing current
Number, output pulse width control signal；
Power amplification circuit, and the connection of the second microprocessor, for receiving pulse-width control signal, believe according to pulse-width controlled
Number, control output to the power supply of the first power supply or second source, to realize all stream to the first power supply or second source；
Rectification circuit, and power amplification circuit connection, for carrying out to the power supply of the first power supply or second source to output
Rectification.
Preferably, sensor assembly includes voltage sensor and current sensor.
Preferably, two-supply circuit also includes warning circuit, and warning circuit and first microprocessor connect.
Also a kind of double power-supply system of the utility model embodiment, including battery module, DC-DC power supply module and
Two-supply circuit, battery module and DC-DC power supply module connect；
Wherein, two-supply circuit includes：
Inverter；
First power supply, and the connection of DC-DC power supply module, and when inverter is in normal operating conditions, first
Power supply provides the first low-tension supply for inverter；
Second source, and battery module connection, and when inverter is in abnormal operation, second source is inversion
Device provides the second low-tension supply；
Control circuit, the input of control circuit is connected with the first power supply and second source respectively, the output of control circuit
End and inverter connect, and for gathering the working condition of inverter, and the working condition according to inverter, control the first power supply
Or the power supply state of second source.
Preferably, control circuit includes：
First switch, and the connection of the first power supply；
Second switch, and second source connection；
First microprocessor, is connected with first switch and second switch respectively；
First communication module, and first microprocessor connection；
Two-supply circuit also includes second communication module, is connected with first communication module and inverter respectively, for
One communication module transmits the work state information of inverter；
First microprocessor receives the work state information of inverter by first communication module, when inverter is normal work
Make state, first microprocessor produces the first control signal and the second control signal, close first by the first control signal and open
Close, second switch is disconnected by the second control signal；When inverter is in abnormal operation, first microprocessor produces the
Three control signals and the 4th control signal, disconnect first switch by the 3rd control signal, by the 4th control signal closure the
Two switches.
Preferably, control circuit also includes：
Sensor assembly, respectively with the first power supply, second source and first microprocessor connect, for gathering the respectively
The electric current of one power supply and second source and voltage, output current collection signal and voltage acquisition signal；First microprocessor receives
With process voltage acquisition signal and current acquisition signal, export euqalizing current signal；
Second microprocessor, and first microprocessor connection, for receiving euqalizing current signal, believe according to euqalizing current
Number, output pulse width control signal；
Power amplification circuit, and the connection of the second microprocessor, for receiving pulse-width control signal, believe according to pulse-width controlled
Number, control output to the power supply of the first power supply or second source, to realize all stream to the first power supply or second source；
Rectification circuit, and power amplification circuit connection, for carrying out to the power supply of the first power supply or second source to output
Rectification.
Preferably, two-supply circuit also includes warning circuit, and warning circuit and first microprocessor connect.
The utility model embodiment also provides a kind of electric automobile, and electric automobile includes vehicle body, and vehicle body is provided with above-mentioned
Double power-supply system.
Compared with prior art, the beneficial effects of the utility model are：The dual power supply electricity of the utility model electric automobile
Road includes the first power supply, second source and control circuit, and when inverter is in normal operating conditions, the first power supply is inverter
First low-tension supply is provided；When inverter is in abnormal operation, second source provides the second low-tension supply for inverter；
The output end of control circuit and inverter connect, for gathering the working condition of inverter, and the work shape according to inverter
State, controls the power supply state of the first power supply or second source.Use the first power supply when inverter is in normal operating conditions
Power supply；When inverter is in abnormal operation, powered using second source when inverter is in abnormal operation, thus protecting
Card also has second source to provide low-tension supply to inverter in the first power failure, makes inverter keep normal operating conditions,
Improve the security performance of electric automobile.
【Brief description】
Fig. 1 is the circuit structure theory diagram of the two-supply circuit of the utility model one embodiment.
Fig. 2 is the circuit structure theory diagram of the two-supply circuit of the utility model one embodiment.
Fig. 3 is the circuit structure theory diagram of the two-supply circuit of the utility model one embodiment.
Fig. 4 is the circuit structure theory diagram of the two-supply circuit of the utility model one embodiment.
Fig. 5 is the circuit structure theory diagram of the double power-supply system of the utility model embodiment.
Fig. 6 be the double power-supply system of the utility model embodiment circuit structure connection diagram.
Fig. 7 is the circuit structure connection diagram powered of single supply of the double power-supply system of the utility model embodiment.
Fig. 8 is the circuit structure connection signal powered of another single supply of the double power-supply system of the utility model embodiment
Figure.
【Specific embodiment】
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only in order to explain
The utility model, is not used to limit the utility model.Additionally, institute in each embodiment of the utility model disclosed below
As long as the technical characteristic being related to does not constitute conflict each other just can be mutually combined.
As shown in figure 1, the two-supply circuit that the utility model embodiment provides include inverter 40, the first power supply 10, the
Two power supplys 20 and control circuit 30.When inverter 40 is in normal operating conditions, the first power supply 10 provides for inverter 40
One low-tension supply；When inverter 40 is in abnormal operation, second source 20 provides the second low-tension supply for inverter 40；
The input of control circuit 30 is connected with the first power supply 10 and second source 20 respectively, the output end of control circuit 30 and inverter
40 connections, for gathering the working condition of inverter 40, the working condition of inverter 40 is divided into normal operating conditions and abnormal work
Make state.Control circuit 30, according to the working condition of inverter 40, controls the power supply shape of the first power supply 10 or second source 20
State, the power supply state of the first power supply 10 refers to provide the first low-tension supply to inverter 40, second source 20 by the first power supply 10
Power supply state refer to provide the second low-tension supply to inverter 40 by second source 20.I.e. when inverter 40 is in normal work
State is powered using the first power supply 10；When inverter 40 is in abnormal operation, when inverter 40 is in abnormal operation
Powered using second source 20, thus ensureing also have second source 20 to provide low pressure to inverter 40 in the first power supply 10 fault
Power supply, makes inverter 40 keep normal operating conditions, improves the security performance of electric automobile.
In one embodiment, control circuit 30 includes first switch 301, second switch 302, first microprocessor and first
Communication module 304, first switch 301 and the first power supply 10 connect；Second switch 302 and second source 20 connect；First micro- place
Reason device is connected with first switch 301 and second switch 302 respectively；First communication module 304 and first microprocessor connect.Double electricity
Source circuit also includes second communication module 50, is connected with first communication module 304 and inverter 40 respectively, for the first communication
Module 304 transmits the work state information of inverter 40；First microprocessor receives inverter 40 by first communication module 304
Work state information, when inverter 40 be normal operating conditions, first microprocessor produce the first control signal and second control
Signal processed, closes first switch 301 by the first control signal, disconnects second switch 302 by the second control signal；Work as inversion
Device 40 is in abnormal operation, and first microprocessor produces the 3rd control signal and the 4th control signal, controls by the 3rd
Signal disconnects first switch 301, closes second switch 302 by the 4th control signal.In a preferred embodiment, the first communication mould
Block 304 and the second communication module 50 are respectively a CAN (Controller Area Network controller local area network, CAN)
Communication module and the second CAN.
In another embodiment, control circuit 30 also includes sensor assembly 305, the second microprocessor 306, power amplification
Circuit 307 and rectification circuit 308.Sensor assembly 305 respectively with the first power supply 10, second source 20 and first microprocessor
Connect, for gathering electric current and the voltage of the first power supply 10 and second source 20 respectively, output current collection signal and voltage are adopted
Collection signal；First microprocessor receives and processes voltage acquisition signal and current acquisition signal, exports euqalizing current signal.Work as electricity
When pressure or electric current are less than threshold value, first microprocessor exports the first euqalizing current signal, so that the second microprocessor 306 is exported greatly
The pulse-width control signal of dutycycle, power amplification circuit 307, according to the pulse-width control signal of this big space rate, amplifies output voltage
Or electric current, to realize all flowing.On the contrary, when voltage or electric current are higher than threshold value, first microprocessor exports the second euqalizing current
Signal, makes the second microprocessor 306 export the pulse-width control signal of little dutycycle, power amplification circuit 307 is according to this little duty
The pulse-width control signal of ratio, reduces output voltage or electric current, to realize all flowing.In the present embodiment, designer is according to operation mesh
, in conjunction with the work characteristics of inverter 40, the voluntarily size of predetermined threshold value.First euqalizing current of first microprocessor output
Signal or the second euqalizing current signal are different, and the first euqalizing current signal or the second euqalizing current signal all can
By pin, transporting to the second microprocessor 306, thus triggering the second microprocessor 306 according to pre-set programs, producing pulse-width controlled
Signal.Wherein, the second microprocessor 306 and first microprocessor connect, for receiving euqalizing current signal, according to euqalizing current
Signal, output pulse width control signal.In the present embodiment, this pulse-width control signal is PWM modulation signal, has certain duty
Than.Designer can voluntarily adjust the dutycycle of this pulse-width control signal according to operation purpose, to realize controlling power amplification
The switch time of each switching tube in circuit 307 and state.
Power amplification circuit 307 and the second microprocessor 306 connect, for receiving pulse-width control signal, according to pulsewidth control
Signal processed, controls output to the power supply of the first power supply 10 or second source 20, to realize to the first power supply 10 or second source 20
All stream.Power amplification circuit 307 can be the amplifying circuit based on mos pipe composition, and the type selecting of concrete mos pipe is designing
Fixed, further, the content that designer can also be instructed and guided according to embodiment, in conjunction with prior art, designed, designed power is put
Big circuit 307.
Rectification circuit 308, and power amplification circuit 307 connects, for output to the first power supply 10 or second source 20
Power supply carry out rectification.Rectification circuit 308 is used for reducing power supply ripple.
In another embodiment, sensor assembly 305 includes voltage sensor and current sensor.Voltage sensor and institute
State first microprocessor to connect, for measuring the voltage of described first power supply 10 module and described second source 20 module；Electric current
Sensor is connected with first microprocessor, for measuring the electricity of described first power supply 10 module and described second source 20 module
Stream.
In one embodiment, two-supply circuit also includes warning circuit 60, and warning circuit 60 and first microprocessor connect,
First microprocessor, according to the abnormal operation of inverter 40, triggers warning circuit 60 and reports to the police, such as sound the alarm, screen carries
Show color of flicker or conversion warning light etc..
In another embodiment, the first power supply 10 of two-supply circuit is battery, and second source 20 is stand-by power supply.Store
After battery discharge, can make the regeneration of internal active material with the mode charging is chemical energy electrical power storage one by one；Need to discharge
Shi Zaici is converted to electric energy chemical energy.
The utility model embodiment also provides a kind of double power-supply system, and double power-supply system includes above-mentioned two-supply circuit,
Also include battery module 70 and DC-DC power supply module 80 (DC/DC module), battery module 70 is with second source 20 even
Connect, battery module 70 is powered for second source 20；DC/DC module and battery module 70 connect, DC/DC module also with the first power supply
10 modules connect；DC/DC module is powered after the high voltage power supply step-down of battery module 70 to the first power supply 10.The utility model electricity
The double power-supply system of electrical automobile includes battery module 70, DC/DC module, the first power supply 10, second source 20 and control circuit 30,
Battery module 70 is the first power supply 10 and second source 20 is powered, after the high voltage power supply of battery module 70 is depressured by DC/DC module
Power to the first power supply 10, the first power supply 10 is preferably battery, and second source 20 is preferably stand-by power supply.At inverter 40
When normal operating conditions, the first power supply 10 provides the first low-tension supply for inverter 40；It is in abnormal work in inverter 40
During state, second source 20 provides the second low-tension supply for inverter 40；The output end of control circuit 30 and inverter 40 connect,
For gathering the working condition of inverter 40, and the working condition according to inverter 40, control the first power supply 10 or second
The power supply state of power supply 20.Powered using the first power supply 10 when inverter 40 is in normal operating conditions；At inverter 40
In abnormal operation, powered using second source 20 when inverter 40 is in abnormal operation, thus ensureing in the first electricity
Also have second source 20 to provide low-tension supply to inverter 40 during 10 fault of source, make inverter 40 keep normal operating conditions, carry
Rise the security performance of electric automobile.
The utility model embodiment also provides a kind of electric automobile, and electric automobile includes vehicle body, and vehicle body is provided with above-mentioned
Double power-supply system.
The content that those skilled in the art is instructed and guided according to the utility model, in conjunction with prior art, all can realize this
Bright purpose.The each embodiment of the utility model, as long as not colliding with each other, all can be combined.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all this
Any modification, equivalent and improvement made within the spirit of utility model and principle etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of two-supply circuit is it is characterised in that include：
Inverter；
First power supply, when described inverter is in normal operating conditions, described first power supply provides first for described inverter
Low-tension supply；
Second source, when described inverter is in abnormal operation, described second source provides second for described inverter
Low-tension supply；
Control circuit, the input of described control circuit is connected with described first power supply and described second source respectively, described control
The output end of circuit processed and described inverter connect, for gathering the working condition of described inverter, and according to described inversion
The working condition of device, controls the power supply state of described first power supply or described second source.
2. two-supply circuit according to claim 1 it is characterised in that
Described control circuit includes：
First switch, and described first power supply connection；
Second switch, and the connection of described second source；
First microprocessor, is connected with described first switch and described second switch respectively；
First communication module, and the connection of described first microprocessor；
Described two-supply circuit also includes second communication module, is connected with described first communication module and described inverter respectively,
For transmitting the work state information of described inverter to described first communication module；
Described first microprocessor passes through the work state information that described first communication module receives described inverter, when described inverse
Change device is normal operating conditions, and described first microprocessor produces the first control signal and the second control signal, by described the
One control signal closes described first switch, disconnects described second switch by described second control signal；When described inverter
It is in abnormal operation, described first microprocessor produces the 3rd control signal and the 4th control signal, by the described 3rd
Control signal disconnects described first switch, closes described second switch by described 4th control signal.
3. two-supply circuit according to claim 1 and 2 is it is characterised in that described control circuit also includes：
Sensor assembly, connects with described first power supply, described second source and first microprocessor, respectively for adopting respectively
Collect electric current and the voltage of described first power supply and described second source, output current collection signal and voltage acquisition signal；Described
First microprocessor receives and processes described voltage acquisition signal and described current acquisition signal, exports euqalizing current signal；
Second microprocessor, and the connection of described first microprocessor, for receiving described euqalizing current signal, according to described equilibrium
Current signal, output pulse width control signal；
Power amplification circuit, and described second microprocessor connection, for receiving described pulse-width control signal, according to described pulsewidth
Control signal, controls output to the power supply of described first power supply or described second source, to realize to described first power supply or institute
State all stream of second source；
Rectification circuit, and described power amplification circuit connects, for output to described first power supply or described second source
Power supply carries out rectification.
4. two-supply circuit according to claim 3 it is characterised in that described sensor assembly include voltage sensor and
Current sensor.
5. two-supply circuit according to claim 3 is it is characterised in that described two-supply circuit also includes warning circuit,
Described warning circuit and described first microprocessor connect.
6. a kind of double power-supply system is it is characterised in that include battery module, DC-DC power supply module and dual power supply electricity
Road, described battery module and described DC-DC power supply module connect；
Wherein, described two-supply circuit includes：
Inverter；
First power supply, and the connection of described DC-DC power supply module, and when described inverter is in normal operating conditions,
Described first power supply provides the first low-tension supply for described inverter；
Second source, and the connection of described battery module, and when described inverter is in abnormal operation, described second electricity
Source provides the second low-tension supply for described inverter；
Control circuit, the input of described control circuit is connected with described first power supply and described second source respectively, described control
The output end of circuit processed and described inverter connect, for gathering the working condition of described inverter, and according to described inversion
The working condition of device, controls the power supply state of described first power supply or described second source.
7. double power-supply system according to claim 6 is it is characterised in that described control circuit includes：
First switch, and described first power supply connection；
Second switch, and the connection of described second source；
First microprocessor, is connected with described first switch and described second switch respectively；
First communication module, and the connection of described first microprocessor；
Described two-supply circuit also includes second communication module, is connected with described first communication module and described inverter respectively,
For transmitting the work state information of described inverter to described first communication module；
Described first microprocessor passes through the work state information that described first communication module receives described inverter, when described inverse
Change device is normal operating conditions, and described first microprocessor produces the first control signal and the second control signal, by described the
One control signal closes described first switch, disconnects described second switch by described second control signal；When described inverter
It is in abnormal operation, described first microprocessor produces the 3rd control signal and the 4th control signal, by the described 3rd
Control signal disconnects described first switch, closes described second switch by described 4th control signal.
8. double power-supply system according to claim 7 is it is characterised in that described control circuit also includes：
Sensor assembly, connects with described first power supply, described second source and first microprocessor, respectively for adopting respectively
Collect electric current and the voltage of described first power supply and described second source, output current collection signal and voltage acquisition signal；Described
First microprocessor receives and processes described voltage acquisition signal and described current acquisition signal, exports euqalizing current signal；
Second microprocessor, and the connection of described first microprocessor, for receiving described euqalizing current signal, according to described equilibrium
Current signal, output pulse width control signal；
Power amplification circuit, and described second microprocessor connection, for receiving described pulse-width control signal, according to described pulsewidth
Control signal, controls output to the power supply of described first power supply or described second source, to realize to described first power supply or institute
State all stream of second source；
Rectification circuit, and described power amplification circuit connects, for output to described first power supply or described second source
Power supply carries out rectification.
9. the double power-supply system according to claim 7 or 8 is it is characterised in that described two-supply circuit also includes electricity of reporting to the police
Road, described warning circuit and described first microprocessor connect.
10. it is characterised in that described electric automobile includes vehicle body, described vehicle body is provided with such as claim 6 to a kind of electric automobile
To the double power-supply system described in 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620760443.5U CN205986309U (en) | 2016-07-19 | 2016-07-19 | Two power supply circuit , system and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620760443.5U CN205986309U (en) | 2016-07-19 | 2016-07-19 | Two power supply circuit , system and electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN205986309U true CN205986309U (en) | 2017-02-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620760443.5U Expired - Fee Related CN205986309U (en) | 2016-07-19 | 2016-07-19 | Two power supply circuit , system and electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481468A (en) * | 2019-08-16 | 2019-11-22 | 重庆长安汽车股份有限公司 | Automobile double power-supply system and vehicle for L3 grades of automatic Pilots |
-
2016
- 2016-07-19 CN CN201620760443.5U patent/CN205986309U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110481468A (en) * | 2019-08-16 | 2019-11-22 | 重庆长安汽车股份有限公司 | Automobile double power-supply system and vehicle for L3 grades of automatic Pilots |
| CN110481468B (en) * | 2019-08-16 | 2023-02-24 | 重庆长安汽车股份有限公司 | Automobile dual-power system for L3-level automatic driving and automobile |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20210719 |