CN106428199B - A kind of new-energy automobile and its high-voltage electric system - Google Patents
A kind of new-energy automobile and its high-voltage electric system Download PDFInfo
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- CN106428199B CN106428199B CN201611104630.9A CN201611104630A CN106428199B CN 106428199 B CN106428199 B CN 106428199B CN 201611104630 A CN201611104630 A CN 201611104630A CN 106428199 B CN106428199 B CN 106428199B
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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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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Abstract
This application discloses a kind of new-energy automobile and its high-voltage electric systems, wherein, electricity strategy under circuit structure and high pressure that the new-energy automobile high-voltage electric system passes through the redesign high-voltage electric system, the unnecessary high pressure power-off of servo steering system is avoided to realize, to reduce the servo steering system failure due to new-energy automobile, so that driver is difficult to change vehicle running track, and then it may cause the purpose of the probability of accident.
Description
Technical field
This application involves new-energy automobile high-voltage electric system technical fields, more specifically to a kind of new energy vapour
Vehicle and its high-voltage electric system.
Background technique
New-energy automobile high-voltage electric system mainly includes electric boosting steering system, driving motor system, electronic pneumatics
Machine system, direct current transducer, electronic except defrosting system and electric air-conditioning, power supply when these high tension apparatus work is by the new energy vapour
The power battery of vehicle provides, the high pressure of the high-voltage electric system as described in the vehicle control unit controls of the new-energy automobile power on and
It is electric under high pressure.When there is secondary failure in any one high tension apparatus for constituting the high-voltage electric system, the full-vehicle control
Device, which will be taken, carries out drop power to the high-voltage electric system, carries out fall-back processing to the new-energy automobile；Work as structure
When there is level fault at any one high tension apparatus of the high-voltage electric system, the entire car controller will control described
It is electric under high-voltage electric system high pressure, all equal broken height pressures of high tension apparatus.But if in vehicle high-speed operational process unexpected institute
There is high tension apparatus broken height pressure, will lead to the servo steering system failure of the new-energy automobile, so that driver is difficult to change
Become the running track of the new-energy automobile, and then the new-energy automobile may be made to deviate correct enforcement route, rushes
The accident for haveing highway or bumping against with adjacent vehicle.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of new-energy automobile and its high-voltage electric system, to realize
The unnecessary high pressure power-off of servo steering system is avoided, so that the servo steering system failure due to new-energy automobile is reduced, from
And driver is made to be difficult to change vehicle running track, and then may cause the purpose of the probability of accident.
To realize the above-mentioned technical purpose, the embodiment of the invention provides following technical solutions:
A kind of new-energy automobile high-voltage electric system, applied to the new-energy automobile with power battery, the new energy
Automobile high-voltage electricity gas system includes: preliminary filling circuit, power-assisted steering branch, motor branch, electric compressor branch, direct current conversion branch
Road, electronic defrosting branch, air-conditioning branch, third contactor, the 5th contactor and control module；Wherein,
The preliminary filling circuit includes first contactor, second contactor and preliminary filling resistance, wherein the second contactor and
It is in parallel with the first contactor after the preliminary filling resistance concatenation；
The power-assisted steering branch includes the 4th contactor and electric boosting steering system of concatenation；
The motor branch includes the 6th contactor and driving motor system of concatenation；
The electric compressor branch includes the 7th contactor and electric compressor system of concatenation；
The direct current converting branch includes the 8th contactor and direct current transducer of concatenation；
The electronic defrosting branch includes the 9th contactor of concatenation and electronic except defrosting system；
The air-conditioning branch includes the tenth contactor and electric air-conditioning of concatenation；
The preliminary filling circuit is serially connected between the positive and negative anodes of the power battery, described 5th contactor one end with it is described pre-
It fills circuit to connect far from described power battery anode one end, the other end is connect with the first high-pressure modular, first high-pressure modular
Connect with the third contactor far from described 5th contactor one end, the third contactor is far from the 5th contactor
One end is connect with the cathode of the power battery；
One end of the second high-pressure modular is connected on the 5th contactor and the connecting line in the preliminary filling circuit, another termination
On the connecting line of the third contactor and first high-pressure modular；
First high-pressure modular includes motor branch in parallel, electric compressor branch, direct current converting branch, electronic removes
White branch and air-conditioning branch, second high-pressure modular include power-assisted steering branch, or, first high-pressure modular includes parallel connection
Motor branch, direct current converting branch, electronic defrosting branch and air-conditioning branch, second high-pressure modular includes power-assisted in parallel
Turn to branch and electric compressor branch；
The control module is used to control first high-pressure modular and the second high-pressure modular progress high pressure powers on and high pressure
Lower electricity；
It includes: to receive that the control module, which controls electricity under first high-pressure modular and the second high-pressure modular progress high pressure,
To the driving motor system, electric compressor system, direct current transducer, electronic except defrosting system or the alarm of electric air-conditioning level fault
When, disconnect the contactor of branch where the high tension apparatus for level fault occur；When receiving level-one insulation alarm, described in disconnection
5th contactor, and judge whether level-one insulation alarm releases after the first preset time, it is connect if it is not, then disconnecting the described 4th
Tentaculum, and judge whether level-one insulation alarm releases after the second preset time, if it is not, then the first contactor is disconnected,
And judge whether level-one insulation alarm releases after third preset time, if it is not, then determining the power battery failure.
Optionally, the control module is also used to judge whether the speed of the new-energy automobile is greater than preset vehicle speed；
When the speed of the new-energy automobile is greater than preset vehicle speed, the control module controls first high-pressure modular
Carrying out electricity under high pressure with the second high-pressure modular includes: to receive the driving motor system, electric compressor system, direct current turn
Parallel operation, it is electronic except defrosting system or the alarm of electric air-conditioning level fault when, branch where disconnecting the high tension apparatus for level fault occur
Contactor；When receiving level-one insulation alarm, the 5th contactor is disconnected, and judge that level-one is exhausted after the first preset time
Whether edge alarm releases, if it is not, then disconnecting the 4th contactor, and level-one insulation alarm is judged after the second preset time
Whether release, if it is not, then disconnecting the first contactor, and judge whether level-one insulation alarm solves after third preset time
It removes, if it is not, then determining the power battery failure；
When the speed of the new-energy automobile is less than or equal to preset vehicle speed, the control module control described first is high
Die block and the second high-pressure modular carry out electricity under high pressure include: receive the driving motor system, electric compressor system,
Direct current transducer, it is electronic except defrosting system or the alarm of electric air-conditioning level fault when, where disconnecting the high tension apparatus for level fault occur
The contactor of branch；When receiving level-one insulation alarm, drop function is carried out to first high-pressure modular and the second high-pressure modular
Rate processing disconnects the 5th contactor after the 4th preset time, and first after disconnecting the 5th contactor is default
Judge whether level-one insulation alarm releases after time, if it is not, then disconnecting the 4th contactor, and after the second preset time
Judge whether level-one insulation alarm releases, if it is not, then disconnecting the first contactor, and judges one after third preset time
Whether class B insulation alarm releases, if it is not, then determining the power battery failure.
Optionally, the value range of the 4th preset time is 5s ± 3s, including endpoint value.
Optionally, the value range of the preset vehicle speed is 10km/h-20km/h, including endpoint value.
Optionally, the value range of first preset time, the second preset time and third preset time be 10s ±
5s, including endpoint value.
Optionally, the control module is also used to when receiving electric boosting steering system level fault alarm,
Electric power steering fault alarm is issued, and disconnects the 4th contactor after the 5th preset time.
Optionally, the value range of the 5th preset time is 10s ± 5s, including endpoint value.
Optionally, the power-assisted steering branch, motor branch, electric compressor branch, direct current converting branch, electronic defrosting
Branch and air-conditioning branch further include the fuse respectively concatenated.
Optionally, the control module controls first high-pressure modular and the second high-pressure modular carries out high pressure and powers on packet
It includes: third contactor and the 5th contactor closure is controlled after receiving low pressure power on signal, after receiving upper high-voltage signal
Second contactor closure is controlled, and judges whether pre-charge pressure is greater than or equal to predeterminated voltage, if it is, the first contact of control
Device closure, second contactor disconnect.
A kind of new-energy automobile, including at least one new-energy automobile high-voltage electric system as described in any one of the above embodiments.
It can be seen from the above technical proposal that the embodiment of the invention provides a kind of new-energy automobile and its high-voltage electrical apparatus systems
System, wherein the new-energy automobile high-voltage electric system by redesign the high-voltage electric system circuit structure and
Electricity strategy under high pressure avoids the unnecessary high pressure power-off of servo steering system to realize, to reduce due to new-energy automobile
Servo steering system failure so that driver is difficult to change vehicle running track, and then may cause the probability of accident
Purpose.Specifically, the preliminary filling circuit of the new-energy automobile high-voltage electric system is serially connected with the positive and negative anodes of the power battery
Between, described 5th contactor one end is connect with the preliminary filling circuit far from described power battery anode one end, the other end and
The connection of one high-pressure modular, first high-pressure modular are connect far from described 5th contactor one end with the third contactor,
The third contactor is connect far from described 5th contactor one end with the cathode of the power battery, when the driving motor system
It is system, electric compressor system, direct current transducer, electronic when there is level fault except defrosting system or electric air-conditioning, it only disconnects and occurs one
The contactor of branch, guarantees the normal operation of other high tension apparatus, avoids the power-assisted steering where the high tension apparatus of grade failure
The case where high tension apparatus except system level fault occurs and powers off servo steering system high pressure appearance；In addition, working as
When there is level-one insulation alarm, it is first considered that the level-one insulation alarm is due to caused by second high-pressure modular, at this time
The 5th contactor is disconnected, the second high-pressure modular high pressure is powered off, guarantees the normal operation of the servo steering system；
Only after disconnecting the first preset time of the 5th contactor, when the level-one insulation alarm does not still release, institute is just disconnected
The 4th contactor is stated, the servo steering system high pressure is powered off, by this lower electricity strategy, reduces described help as much as possible
The possibility of the high pressure power-off of power steering system, so that the servo steering system failure reduced due to new-energy automobile is realized, from
And driver is made to be difficult to change vehicle running track, and then may cause the purpose of the probability of accident.
Further, after the 4th contactor disconnects the second preset time, if the level-one insulation alarm is still
It does not release, then judges to lead negative circuit or power battery there are insulation fault, consider that vehicle is safe, disconnect the first contactor,
The power-off of vehicle high pressure；If the level-one insulation alarm does not release yet after the first contactor disconnects third preset time,
Then determine the power battery failure, driver can search insulation fault point for the power battery at this time.Therefore described
Electric strategy, which additionally aids, under first high-pressure modular described in control module and the second high-pressure modular progress high pressure helps driver true
Surely the high tension apparatus of the reason of breaking down and failure.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of circuit structure signal for new-energy automobile high-voltage electric system that one embodiment of the application provides
Figure；
Fig. 2 is that a kind of circuit structure for new-energy automobile high-voltage electric system that another embodiment of the application provides shows
It is intended to；
Fig. 3 is that a kind of circuit structure for new-energy automobile high-voltage electric system that another embodiment of the application provides shows
It is intended to.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present application provides a kind of new-energy automobile high-voltage electric system, as depicted in figs. 1 and 2, is applied to tool
The new-energy automobile of dynamic battery, the new-energy automobile high-voltage electric system include: preliminary filling circuit 100, power-assisted steering branch
Road, motor branch, electric compressor branch, direct current converting branch, electronic defrosting branch, air-conditioning branch, third contactor K3,
Five contactor K5 and control module；Wherein,
The preliminary filling circuit 100 includes first contactor K1, second contactor K2 and preliminary filling resistance R, wherein described second
It is in parallel with the first contactor K1 after contactor K2 and preliminary filling resistance R concatenation；
The power-assisted steering branch includes the 4th contactor K4 and electric boosting steering system EPS of concatenation；
The motor branch includes the 6th contactor K6 and driving motor system MCU of concatenation；
The electric compressor branch includes the 7th contactor K7 and electric compressor system EAS of concatenation；
The direct current converting branch includes the 8th contactor K8 and direct current transducer DCDC of concatenation；
The electronic defrosting branch includes the 9th contactor K9 of concatenation and electronic except defrosting system PTC；
The air-conditioning branch includes the tenth contactor K10 and electric air-conditioning EAC of concatenation；
The preliminary filling circuit 100 is serially connected between the positive and negative anodes of the power battery, described 5th one end contactor K5 with
The preliminary filling circuit 100 is connected far from described power battery anode one end, and the other end is connect with the first high-pressure modular 300, described
First high-pressure modular 300 is connect far from described 5th one end contactor K5 with the third contactor K3, the third contact
Device K3 is connect far from described 5th one end contactor K5 with the cathode of the power battery；
One end of the second high-pressure modular 200 is connected on the 5th contactor K5 and the connecting line in the preliminary filling circuit 100,
On another connecting line for being terminated at the third contactor K3 and first high-pressure modular 300；
First high-pressure modular 300 includes motor branch in parallel, electric compressor branch, direct current converting branch, electricity
Dynamic defrosting branch and air-conditioning branch, second high-pressure modular 200 includes power-assisted steering branch, or, first high-pressure modular
300 include motor branch, direct current converting branch, electronic defrosting branch and air-conditioning branch in parallel, second high-pressure modular 200
Including power-assisted steering branch and electric compressor branch in parallel；
The control module carries out high pressure and powers on for controlling first high-pressure modular 300 and the second high-pressure modular 200
With electricity under high pressure；
The control module controls electricity under first high-pressure modular 300 and the second high-pressure modular 200 progress high pressure
Receiving the driving motor system MCU, electric compressor system EAS, direct current transducer DCDC, electronic except defrosting system PTC
Or when electricity air-conditioning EAC level fault alarm, disconnect the contactor of branch where the high tension apparatus for level fault occur；It is receiving
When level-one insulation alarm, the 5th contactor K5 is disconnected, and judge whether level-one insulation alarm solves after the first preset time
It removes, if it is not, then disconnecting the 4th contactor K4, and judges whether level-one insulation alarm releases after the second preset time,
If it is not, then disconnecting the first contactor K1, and judge whether level-one insulation alarm releases after third preset time, if
It is no, then determine the power battery failure.
It should be noted that receiving the driving motor system MCU, electric compressor system EAS, direct current transducer
DCDC, it is electronic except defrosting system PTC or the alarm of electric air-conditioning EAC level fault when, where disconnecting the high tension apparatus for level fault occur
The contactor of branch refers to when the driving motor system MCU, electric compressor system EAS, direct current transducer DCDC, electronic removes
When level fault individually occur in defrosting system PTC or electricity air-conditioning EAC, high pressure power-off only is carried out to the high tension apparatus for level fault occur
Processing.Such as when level fault occurs in the direct current transducer DCDC, only disconnect straight where the direct current transducer DCDC
The 8th contactor K8 for flowing converting branch powers off the direct current transducer DCDC high pressure, without influencing other high tension apparatus
It works normally.
In one embodiment of the application, the situation for level fault occur to the servo steering system is advised
Fixed, under normal circumstances, the servo steering system is not in level fault, and once level-one occurs in the servo steering system
When failure, in the present embodiment, the control module also will disconnect the power-assisted steering branch where the servo steering system
4th contactor K4.But in the preferred embodiment of the application, the control module be also used to receive it is described electronic
When servo steering system EPS level fault is alarmed, electric power steering fault alarm is issued, and disconnect after the 5th preset time
The 4th contactor K4.The electric boosting steering system EPS level fault alarm is received in the control module in this way
The 5th preset time in, normal work can still be maintained in the electric boosting steering system EPS, so that driver makes benefit
Rescue measure.The value range of 5th preset time can be 10s ± 5s, including endpoint value, the electric power steering event
The concrete form of barrier alarm can be buzz or indicator light flashing.The application to the specific value of the 5th preset time and
The concrete form of the electric power steering fault alarm and without limitation, specifically depending on actual conditions.
In addition, being first considered that the level-one insulation alarm is due to second high pressure when there is level-one insulation alarm
Caused by module 200, the 5th contactor K5 is disconnected at this time, 200 high pressure of the second high-pressure modular is powered off, described in guarantee
The normal operation of servo steering system；Only after disconnecting the first preset time of the 5th contactor K5, a class B insulation
When alarm does not still release, the 4th contactor K4 is just disconnected, the servo steering system high pressure is powered off, under this
Electric strategy, reduces the possibility of the high pressure power-off of the servo steering system as much as possible, to realize reduction due to new energy
The servo steering system failure of source automobile so that driver is difficult to change vehicle running track, and then may cause accident
Probability purpose.
Further, after the 4th contactor K4 disconnects the second preset time, if the level-one insulation alarm is still
It does not release so, then judges to lead negative circuit or power battery there are insulation fault, consider that vehicle is safe, disconnect the first contactor
K1, the power-off of vehicle high pressure；If the level-one insulation alarm is not yet after the first contactor K1 disconnects third preset time
It releases, then determines the power battery failure, driver can search insulation fault point for the power battery at this time.Therefore
First high-pressure modular 300 described in the control module and the second high-pressure modular 200 carry out strategy electric under high pressure and additionally aid side
Driver is helped to determine the high tension apparatus of the reason of breaking down and failure.
It should also be noted that, considering braking safe, preferably take connection type as shown in Figure 2, i.e., described first
High-pressure modular 300 includes motor branch, direct current converting branch, electronic defrosting branch and air-conditioning branch in parallel, and described second is high
Die block 200 includes power-assisted steering branch and electric compressor branch in parallel.In this way when the 5th contactor K5 is disconnected,
The electric compressor branch still can work normally, i.e., the described new-energy automobile still can normally execute brake operation.
On the basis of the above embodiments, in the preferred embodiment of the application, the control module is also used to sentence
Whether the speed of the new-energy automobile of breaking is greater than preset vehicle speed；
When the speed of the new-energy automobile is greater than preset vehicle speed, the control module controls first high-pressure modular
300 and second high-pressure modular 200 carry out high pressure under electricity include: to receive the driving motor system MCU, electric compressor system
Unite EAS, direct current transducer DCDC, it is electronic except defrosting system PTC or the alarm of electric air-conditioning EAC level fault when, disconnection there is level-one therefore
The contactor of branch where the high tension apparatus of barrier；When receiving level-one insulation alarm, disconnection the 5th contactor K5, and
Judge whether level-one insulation alarm releases after first preset time, if it is not, then disconnecting the 4th contactor K4, and second
Judge whether level-one insulation alarm releases after preset time, if it is not, then disconnecting the first contactor K1, and default in third
Judge whether level-one insulation alarm releases after time, if it is not, then determining the power battery failure；
When the speed of the new-energy automobile is less than or equal to preset vehicle speed, the control module control described first is high
It includes: to receive the driving motor system MCU, electronic sky that die block 300 and the second high-pressure modular 200, which carry out electricity under high pressure,
Press system EAS, direct current transducer DCDC, it is electronic except defrosting system PTC or the alarm of electric air-conditioning EAC level fault when, disconnect and occurring
The contactor of branch where the high tension apparatus of level fault；When receiving level-one insulation alarm, to first high-pressure modular
300 and second high-pressure modular 200 carry out drop Power Processing, disconnect the 5th contactor K5 after the 4th preset time, and
Judge whether level-one insulation alarm releases after the first preset time after disconnecting the 5th contactor K5, if it is not, then disconnecting
The 4th contactor K4, and judge whether level-one insulation alarm releases after the second preset time, if it is not, then described in disconnecting
First contactor K1, and judge whether level-one insulation alarm releases after third preset time, if it is not, then determining the power
Battery failures.
It should be noted that in one embodiment of the application, the value range of the 4th preset time can be
5s ± 3s, including endpoint value.The value range of the preset vehicle speed is 10km/h-20km/h, including endpoint value.The application's
In one embodiment, the value of the 4th preset time is 5s, and the value of the preset vehicle speed is 10km/h.The application's
In another embodiment, the value of the 4th preset time can also be 8s, and the value of the preset vehicle speed can also be
20km/h, the application is to the specific value of the 4th preset time and the specific value of value range and the preset vehicle speed
With value range and without limitation, specifically depending on actual conditions.
On the basis of the above embodiments, in another embodiment of the application, first preset time, second are in advance
If the value range of time and third preset time is 10s ± 5s, including endpoint value.
It should be noted that first preset time, the specific value of the second preset time and third preset time and
Value range may be the same or different.The application to this and without limitation, specifically depending on actual conditions.
On the basis of the above embodiments, in the preferred embodiment of the application, as shown in figure 3, the power-assisted turns
It further include respective to branch, motor branch, electric compressor branch, direct current converting branch, electronic defrosting branch and air-conditioning branch
The fuse FUSE of concatenation.
It should be noted that on the basis of Fig. 3 illustrates only circuit structure shown in Fig. 2, the power-assisted steering branch,
Motor branch, electric compressor branch, direct current converting branch, electronic defrosting branch and air-conditioning branch respectively concatenate a fuse
Circuit structure after FUSE, on the basis of not showing that circuit structure shown in Fig. 1, the power-assisted steering branch, motor
Branch, electric compressor branch, direct current converting branch, electronic defrosting branch and air-conditioning branch respectively concatenate a fuse FUSE
Circuit structure later.
In addition, the preliminary filling circuit 100, first high-pressure modular 300 and the second high-pressure modular are not marked in Fig. 3 yet
200。
It should also be noted that, the power-assisted steering branch, motor branch, electric compressor branch, direct current converting branch,
Electronic defrosting branch and air-conditioning branch further include that the fuse FUSE respectively concatenated is mainly used for providing for the branch where respective
Overcurrent protection.
On the basis of the above embodiments, in another preferred embodiment of the application, the control module controls institute
It states the first high-pressure modular 300 and the second high-pressure modular 200 carries out high pressure to power on including: to control after receiving low pressure power on signal
Third contactor K3 and the 5th contactor K5 closure controls second contactor K2 closure after receiving upper high-voltage signal, and sentences
Whether disconnected pre-charge pressure is greater than or equal to predeterminated voltage, if it is, control first contactor K1 closure, second contactor K2 are disconnected
It opens.
It should be noted that the value of the predeterminated voltage is the 90%-98% of the power battery voltage, including endpoint
Value.The application to the specific value of the predeterminated voltage and without limitation, specifically depending on actual conditions.
Correspondingly, the embodiment of the present application also provides a kind of new-energy automobiles, including at least one is such as any of the above-described implementation
New-energy automobile high-voltage electric system described in example.
In conclusion the embodiment of the present application provides a kind of new-energy automobile and its high-voltage electric system, wherein described new
Electricity strategy under circuit structure and high pressure that energy automobile high-voltage electric system passes through the redesign high-voltage electric system, from
And realize and avoid the unnecessary high pressure power-off of servo steering system, to reduce since the servo steering system of new-energy automobile loses
Spirit so that driver is difficult to change vehicle running track, and then may cause the purpose of the probability of accident.Specifically, institute
The preliminary filling circuit 100 for stating new-energy automobile high-voltage electric system is serially connected between the positive and negative anodes of the power battery, and the described 5th
The one end contactor K5 is connect with the preliminary filling circuit 100 far from described power battery anode one end, the other end and the first high pressing mold
Block 300 connects, and first high-pressure modular 300 connects far from described 5th one end contactor K5 and the third contactor K3
It connects, the third contactor K3 is connect far from described 5th one end contactor K5 with the cathode of the power battery, when the drive
Dynamic electric system MCU, electric compressor system EAS, direct current transducer DCDC, the electronic defrosting system PTC or electricity air-conditioning EAC that removes occur
When level fault, the contactor of branch, is guaranteeing other high tension apparatus just where only disconnecting the high tension apparatus for level fault occur
Often operation, avoids the high tension apparatus except the servo steering system from level fault occur and make the servo steering system high pressure
The case where power-off, occurs；In addition, being first considered that the level-one insulation alarm is due to described when there is level-one insulation alarm
Caused by two high-pressure modulars 200, the 5th contactor K5 is disconnected at this time, 200 high pressure of the second high-pressure modular is powered off, and is protected
Demonstrate,prove the normal operation of the servo steering system；Only after disconnecting the first preset time of the 5th contactor K5, described one
When class B insulation alarm does not still release, the 4th contactor K4 is just disconnected, the servo steering system high pressure is powered off, is passed through
It is this it is lower electricity strategy, reduce as much as possible the servo steering system high pressure power-off possibility, thus realize reduction by
In the servo steering system failure of new-energy automobile, so that driver is difficult to change vehicle running track, and then may make
At the purpose of the probability of accident.
Further, after the 4th contactor K4 disconnects the second preset time, if the level-one insulation alarm is still
It does not release so, then judges to lead negative circuit or power battery there are insulation fault, consider that vehicle is safe, disconnect the first contactor
K1, the power-off of vehicle high pressure；If the level-one insulation alarm is not yet after the first contactor K1 disconnects third preset time
It releases, then determines the power battery failure, driver can search insulation fault point for the power battery at this time.Therefore
First high-pressure modular 300 described in the control module and the second high-pressure modular 200 carry out strategy electric under high pressure and additionally aid side
Driver is helped to determine the high tension apparatus of the reason of breaking down and failure.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of new-energy automobile high-voltage electric system, applied to the new-energy automobile with power battery, the new energy vapour
Vehicle high-voltage electric system includes: preliminary filling circuit, power-assisted steering branch, motor branch, electric compressor branch, direct current conversion branch
Road, electronic defrosting branch, air-conditioning branch, third contactor, the 5th contactor and control module；Wherein, the preliminary filling circuit packet
Include first contactor, second contactor and preliminary filling resistance, wherein the second contactor and the preliminary filling resistance concatenation after with institute
First contactor parallel connection is stated, the preliminary filling circuit is serially connected between the positive and negative anodes of the power battery；It is characterized in that,
The power-assisted steering branch includes the 4th contactor and electric boosting steering system of concatenation；
The motor branch includes the 6th contactor and driving motor system of concatenation；
The electric compressor branch includes the 7th contactor and electric compressor system of concatenation；
The direct current converting branch includes the 8th contactor and direct current transducer of concatenation；
The electronic defrosting branch includes the 9th contactor of concatenation and electronic except defrosting system；
The air-conditioning branch includes the tenth contactor and electric air-conditioning of concatenation；
Described 5th contactor one end is connect with the preliminary filling circuit far from described power battery anode one end, the other end and first
High-pressure modular connection, first high-pressure modular are connect far from described 5th contactor one end with the third contactor, institute
It states third contactor and is connect far from described 5th contactor one end with the cathode of the power battery；
One end of the second high-pressure modular is connected on the 5th contactor and the connecting line in the preliminary filling circuit, another to be terminated at institute
On the connecting line for stating third contactor and first high-pressure modular；
First high-pressure modular includes motor branch in parallel, electric compressor branch, direct current converting branch, electronic defrosting branch
Road and air-conditioning branch, second high-pressure modular include power-assisted steering branch, or, first high-pressure modular includes electricity in parallel
Machine branch, direct current converting branch, electronic defrosting branch and air-conditioning branch, second high-pressure modular include power-assisted steering in parallel
Branch and electric compressor branch；
The control module carries out high pressure and powers on and electricity under high pressure for controlling first high-pressure modular and the second high-pressure modular；
It includes: receiving that the control module, which controls electricity under first high-pressure modular and the second high-pressure modular progress high pressure,
State driving motor system, electric compressor system, direct current transducer, it is electronic except defrosting system or the alarm of electric air-conditioning level fault when,
The contactor of branch where disconnecting the high tension apparatus for level fault occur；When receiving level-one insulation alarm, described the is disconnected
Five contactors, and judge whether level-one insulation alarm releases after the first preset time, if it is not, then disconnecting the 4th contact
Device, and judge whether level-one insulation alarm releases after the second preset time, if it is not, then the first contactor is disconnected, and
Judge whether level-one insulation alarm releases after third preset time, if it is not, then determining the power battery failure.
2. new-energy automobile high-voltage electric system according to claim 1, which is characterized in that the control module is also used to
Judge whether the speed of the new-energy automobile is greater than preset vehicle speed；
When the speed of the new-energy automobile is greater than preset vehicle speed, the control module controls first high-pressure modular and the
It includes: to receive the driving motor system, electric compressor system, direct current conversion that two high-pressure modulars, which carry out electricity under high pressure,
Device, it is electronic except defrosting system or the alarm of electric air-conditioning level fault when, branch connects where disconnecting the high tension apparatus for level fault occur
Tentaculum；When receiving level-one insulation alarm, the 5th contactor is disconnected, and a class B insulation is judged after the first preset time
Whether alarm releases, if it is not, then disconnecting the 4th contactor, and judges that level-one insulation alarm is after the second preset time
No releasing, if it is not, then disconnecting the first contactor, and judge whether level-one insulation alarm solves after third preset time
It removes, if it is not, then determining the power battery failure；
When the speed of the new-energy automobile is less than or equal to preset vehicle speed, the control module controls the first high pressing mold
It includes: to receive the driving motor system, electric compressor system, direct current that block and the second high-pressure modular, which carry out electricity under high pressure,
Converter, it is electronic except defrosting system or the alarm of electric air-conditioning level fault when, disconnect branch where the high tension apparatus for level fault occur
Contactor；When receiving level-one insulation alarm, first high-pressure modular and the second high-pressure modular are carried out at drop power
Reason disconnects the 5th contactor, and the first preset time after disconnecting the 5th contactor after the 4th preset time
Judge whether level-one insulation alarm releases afterwards, if it is not, then disconnecting the 4th contactor, and judges after the second preset time
Whether level-one insulation alarm releases, if it is not, then disconnecting the first contactor, and judges that level-one is exhausted after third preset time
Whether edge alarm releases, if it is not, then determining the power battery failure.
3. new-energy automobile high-voltage electric system according to claim 2, which is characterized in that the 4th preset time
Value range is 5s ± 3s, including endpoint value.
4. new-energy automobile high-voltage electric system according to claim 2, which is characterized in that the value of the preset vehicle speed
Range is 10km/h-20km/h, including endpoint value.
5. new-energy automobile high-voltage electric system according to claim 1, which is characterized in that first preset time,
The value range of second preset time and third preset time is 10s ± 5s, including endpoint value.
6. new-energy automobile high-voltage electric system according to claim 1, which is characterized in that the control module is also used to
When receiving electric boosting steering system level fault alarm, electric power steering fault alarm is issued, and the 5th
The 4th contactor is disconnected after preset time.
7. new-energy automobile high-voltage electric system according to claim 6, which is characterized in that the 5th preset time
Value range is 10s ± 5s, including endpoint value.
8. new-energy automobile high-voltage electric system according to claim 1, which is characterized in that the power-assisted steering branch,
Motor branch, electric compressor branch, direct current converting branch, electronic defrosting branch and air-conditioning branch further include respectively concatenate it is molten
Disconnected device.
9. new-energy automobile high-voltage electric system according to claim 1, which is characterized in that the control module controls institute
It states the first high-pressure modular and the second high-pressure modular carries out high pressure to power on including: to control third after receiving low pressure power on signal to connect
Tentaculum and the 5th contactor closure, control second contactor closure, and judge that pre-charge pressure is after receiving upper high-voltage signal
It is no to be greater than or equal to predeterminated voltage, if it is, control first contactor closure, second contactor disconnect.
10. a kind of new-energy automobile, which is characterized in that including at least one such as the described in any item new energy of claim 1-9
Automobile high-voltage electricity gas system.
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| CN108327538A (en) * | 2017-12-29 | 2018-07-27 | 北京智行鸿远汽车有限公司 | The fault handling method and new-energy automobile that severe insulation fault can restore automatically |
| CN113561779B (en) * | 2021-06-30 | 2023-04-25 | 东风汽车集团股份有限公司 | New energy automobile power-down control method and device |
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| CN203920449U (en) * | 2014-04-22 | 2014-11-05 | 桂林电子科技大学 | Electric automobile high-voltage safety detection device |
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