CN106740127A - 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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- CN106740127A CN106740127A CN201611103886.8A CN201611103886A CN106740127A CN 106740127 A CN106740127 A CN 106740127A CN 201611103886 A CN201611103886 A CN 201611103886A CN 106740127 A CN106740127 A CN 106740127A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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Abstract
This application discloses a kind of new-energy automobile and its high-voltage electric system, wherein, the new-energy automobile high-voltage electric system is by electricity strategy under the circuit structure and high pressure that redesign the high-voltage electric system, so as to realize the high pressure power-off for avoiding servo steering system unnecessary, so as to reduce the servo steering system failure due to new-energy automobile, so that driver is difficult to change vehicle running orbit, and then it is likely to result in the purpose of the probability of accident.
Description
Technical field
The application is related to new-energy automobile high-voltage electric system technical field, more specifically to a kind of new energy vapour
Car and its high-voltage electric system.
Background technology
New-energy automobile high-voltage electric system mainly includes electric boosting steering system, 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 electrokinetic cell of car is provided, in the high pressure of high-voltage electric system as described in the vehicle control unit controls of the new-energy automobile electricity and
Electricity 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 will be taken carries out drop power to the high-voltage electric system, and fall-back treatment is carried out to the new-energy automobile；Work as structure
When there is level fault into any one high tension apparatus of the high-voltage electric system, the entire car controller will control described
Electricity, all equal broken height pressures of high tension apparatus under high-voltage electric system high pressure.But if in vehicle high-speed running unexpected institute
There is high tension apparatus broken height pressure, the servo steering system failure of the new-energy automobile can be caused, so that driver is difficult to change
Become the running orbit of the new-energy automobile, and then may cause that the new-energy automobile deviates correct enforcement route, rush
It has highway or the accident bumped against with adjacent car.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of new-energy automobile and its high-voltage electric system, to realize
The unnecessary high pressure of servo steering system is avoided to power off, so that the servo steering system failure due to new-energy automobile is reduced, from
And cause that driver is difficult to change vehicle running orbit, and then it is likely to result in the purpose of the probability of accident.
To realize above-mentioned technical purpose, following technical scheme is the embodiment of the invention provides：
A kind of new-energy automobile high-voltage electric system, is applied to the new-energy automobile with electrokinetic cell, the new energy
Automobile high-voltage electricity gas system includes：First preliminary filling loop, the second preliminary filling loop, power-assisted steering branch road, motor branch road, electronic pneumatics
Machine branch road, direct current converting branch, electronic defrosting branch road, air-conditioning branch road, the 3rd contactor, the 5th contactor and control module；Its
In,
The first preliminary filling loop includes first contactor, second contactor and the first preliminary filling resistance, wherein, described second
It is in parallel with the first contactor after contactor and the first preliminary filling resistance concatenation；
The second preliminary filling loop includes the 11st contactor, the 12nd contactor and the second preliminary filling resistance, wherein, it is described
It is in parallel with the 11st contactor after 12nd contactor and the second preliminary filling resistance concatenation；
The power-assisted steering branch road includes the 4th contactor and electric boosting steering system of concatenation；
The motor branch road includes the 6th contactor and motor system of concatenation；
The electric compressor branch road 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 road includes the 9th contactor and electronic except defrosting system of concatenation；
The air-conditioning branch road includes the tenth contactor of concatenation and electric air-conditioning；
The first preliminary filling loop is serially connected between the both positive and negative polarity of the electrokinetic cell, described 5th contactor one end and institute
State the first preliminary filling loop to be connected away from described power battery anode one end, the other end is connected with the first high-pressure modular, described first
High-pressure modular is connected away from described 5th contactor one end with the 3rd contactor, and the 3rd contactor is away from described
Five contactor one end are connected with the negative pole of the electrokinetic cell；
One end of the second high-pressure modular is connected on the 5th contactor and the connecting line in the first preliminary filling loop, another
It is terminated on the 3rd contactor and the connecting line of first high-pressure modular；
One end in the second preliminary filling loop is connected to the connecting line of the power battery anode and the first preliminary filling loop
On, another one end for being terminated at the 3rd high-pressure modular, the 3rd high-pressure modular is away from described second preliminary filling loop one end and institute
The 3rd contactor is stated away from described power battery cathode one end；
First high-pressure modular includes motor branch road in parallel, direct current converting branch, electronic defrosting branch road and air-conditioning branch
Road；
Second high-pressure modular includes electric compressor branch road, and the 3rd high-pressure modular includes power-assisted steering branch road,
Or, second high-pressure modular is sky, the 3rd high-pressure modular includes power-assisted steering branch road and electric compressor branch in parallel
Road；
The control module carries out height for controlling first high-pressure modular, the second high-pressure modular and the 3rd high-pressure modular
Electricity and electricity under high pressure in pressure；
The control module controls first high-pressure modular, the second high-pressure modular and the 3rd high-pressure modular to enter under horizontal high voltage
Electricity includes：Receiving the motor system, electric compressor system, direct current transducer, electronic except defrosting system or electricity are empty
When adjusting level fault to alarm, there is the contactor of the high tension apparatus place branch road of level fault in disconnection；Receiving a class B insulation
During alarm, the 5th contactor is disconnected, and judge whether one-level insulation alarm releases after the first Preset Time, if not,
Then disconnect the first contactor and for the second high-pressure modular high pressure is powered off, and judge that one-level is exhausted after the second Preset Time
Whether edge alarm releases, if it is not, then disconnecting the 4th contactor and the 11st contactor, and sentences after the 3rd Preset Time
Whether disconnected one-level insulation alarm releases, if it is not, then disconnecting the 3rd contactor, and judges a class B insulation after the 4th Preset Time
Whether alarm contacts, if not, judging the electrokinetic cell failure.
Optionally, the control module controls first high-pressure modular, the second high-pressure modular and the 3rd high-pressure modular to enter
Electricity includes on horizontal high voltage：
The 3rd contactor, the 4th contactor and the 5th contactor closure are controlled after low pressure power on signal is received, is being connect
Receive and control after high-voltage signal second contactor and the 12nd contactor closure, and judge the first pre-charge pressure whether more than or
Equal to the first predeterminated voltage, and whether the second pre-charge pressure is more than or equal to the second predeterminated voltage, if it is, control first
Contactor and the 11st contactor closure, second contactor and the 12nd contactor disconnect.
Optionally, whether the control module is additionally operable to judge the speed of the new-energy automobile more than preset vehicle speed；
When the speed of the new-energy automobile is more than preset vehicle speed, the control module controls first pressing mold high
Electricity includes under block, the second high-pressure modular and the 3rd high-pressure modular enter horizontal high voltage：Receiving the motor system, electronic sky
Press system, direct current transducer, it is electronic except defrosting system or electric air-conditioning level fault alarm when, there is the high pressure of level fault in disconnection
The contactor of branch road where device；When one-level insulation alarm is received, the 5th contactor is disconnected, and when first is default
Between after judge whether one-level insulation alarm releases, if it is not, then disconnect the first contactor and be second high-pressure modular
High pressure is powered off, and judges whether one-level insulation alarm releases after the second Preset Time, if it is not, then disconnecting the 4th contact
Device and the 11st contactor, and judge whether one-level insulation alarm releases after the 3rd Preset Time, if it is not, then disconnecting the 3rd
Contactor, and judge whether one-level insulation alarm contacts after the 4th Preset Time, if not, judging the electrokinetic cell event
Barrier；
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
Electricity includes under die block, the second high-pressure modular and the 3rd high-pressure modular enter horizontal high voltage：Receiving the motor system, electricity
Dynamic air compressor system, direct current transducer, it is electronic except defrosting system or electric air-conditioning level fault alarm when, there is level fault in disconnection
The contactor of branch road where high tension apparatus；When one-level insulation alarm is received, to first high-pressure modular, the second pressing mold high
Block and the 3rd high-pressure modular carry out drop Power Processing, the 5th contactor are disconnected after the 5th Preset Time, and disconnect institute
Judge whether one-level insulation alarm releases after stating the first Preset Time after the 5th contactor, if it is not, then disconnecting described first
Contactor and be the second high-pressure modular high pressure power-off, and judges whether one-level insulation alarm solves after the second Preset Time
Remove, if it is not, then disconnecting the 4th contactor and the 11st contactor, and a class B insulation report is judged after the 3rd Preset Time
Whether police releases, if it is not, then disconnecting the 3rd contactor, and judges whether one-level insulation alarm connects after the 4th Preset Time
Touch, if not, judging the electrokinetic cell failure.
Optionally, the span of the 5th Preset Time is 5s ± 3s, including endpoint value.
Optionally, the span of the preset vehicle speed is 10km/h-20km/h, including endpoint value.
Optionally, the value of first Preset Time, the second Preset Time, the 3rd Preset Time and the 4th Preset Time
Scope is 10s ± 5s, including endpoint value.
Optionally, the control module is additionally operable to when the electric boosting steering system level fault alarm is received,
Electric power steering fault alarm is sent, and the 4th contactor is disconnected after the 6th Preset Time.
Optionally, the span of the 6th Preset Time is 10s ± 5s, including endpoint value.
Optionally, the power-assisted steering branch road, motor branch road, electric compressor branch road, direct current converting branch, electronic defrosting
Branch road and air-conditioning branch road also include the fuse of each concatenation.
A kind of new-energy automobile, including at least one new-energy automobile high-voltage electric system as described in above-mentioned any one.
From above-mentioned technical proposal as can be seen that the embodiment of the invention provides a kind of new-energy automobile and its high-voltage electrical apparatus system
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, so that the high pressure power-off for avoiding servo steering system unnecessary is realized, so as to reduce due to new-energy automobile
Servo steering system failure so that driver is difficult to change vehicle running orbit, and then be likely to result in the probability of accident
Purpose.Specifically, the first preliminary filling loop is serially connected between the both positive and negative polarity of the electrokinetic cell, the 5th contactor one
End is connected with the first preliminary filling loop away from described power battery anode one end, and the other end is connected with the first high-pressure modular, institute
State being connected with the 3rd contactor away from described 5th contactor one end for the first high-pressure modular, the 3rd contactor away from
Described 5th contactor one end is connected with the negative pole of the electrokinetic cell；One end of the second high-pressure modular is connected to the 5th contact
On device and the connecting line in the first preliminary filling loop, another company for being terminated at the 3rd contactor and first high-pressure modular
In wiring；One end in the second preliminary filling loop is connected to the connecting line of the power battery anode and the first preliminary filling loop
On, another one end for being terminated at the 3rd high-pressure modular, the 3rd high-pressure modular is away from described second preliminary filling loop one end and institute
The 3rd contactor is stated away from described power battery cathode one end；When the motor system, electric compressor system, direct current turn
Parallel operation, it is electronic except defrosting system or electric air-conditioning there is level fault when, only disconnect branch road where the high tension apparatus for level fault occur
Contactor, it is ensured that the normal operation of other high tension apparatus, it is to avoid high tension apparatus outside the servo steering system occur
Level failure and there is the situation of servo steering system high pressure power-off；In addition, when there is one-level insulation alarm, recognizing first
The one-level insulation alarm is, because the 3rd high-pressure modular causes, now to disconnect the 5th contactor, will be described
3rd high-pressure modular high pressure is powered off, it is ensured that the normal operation of the servo steering system；Disconnect the 5th contactor first
After Preset Time, if first insulation alarm is not still released, then it is assumed that first insulation alarm is due to described
What two high-pressure modulars caused, the first contactor is now disconnected and for the second high-pressure modular high pressure is powered off, only disconnected
The first Preset Time of the 5th contactor is opened, after disconnecting the Preset Time of first contactor second, the class B insulation report
When police is not still released, the 4th contactor and the 11st contactor are just disconnected, by servo steering system high pressure power-off,
By this lower electricity strategy, the possibility of the high pressure power-off of the servo steering system is reduced as much as possible, it is achieved thereby that drop
It is low due to the servo steering system failure of new-energy automobile so that driver is difficult to change vehicle running orbit, Jin Erke
The purpose of the probability that can be caused the accident.
Further, after the 4th contactor disconnects the 3rd Preset Time, if the one-level insulation alarm is still
Do not release, then judge that main negative loop or electrokinetic cell have insulation fault, it is considered to vehicle safety, disconnect the 3rd contactor,
Vehicle high pressure is powered off；If the one-level insulation alarm is not released yet after the 3rd contactor disconnects the 4th Preset Time,
Then judge the electrokinetic cell failure, now driver can search insulation fault point for the electrokinetic cell.Therefore it is described
The strategy that first high-pressure modular, the second high-pressure modular and the 3rd high-pressure modular described in control module enter electricity under horizontal high voltage is additionally aided
Driver is helped to determine the high tension apparatus of the reason for breaking down and failure.
In addition, first high-pressure modular, the second high-pressure modular and the 3rd high-pressure modular are carried out using two preliminary filling loops
Electricity, reduces the operating current on same preliminary filling loop in high pressure, reduces the probability that preliminary filling loop is burnt, and improves described
The job stability of new-energy automobile high-voltage electric system.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
A kind of circuit structure of new-energy automobile high-voltage electric system that Fig. 1 is provided for one embodiment of the application is illustrated
Figure；
Fig. 2 shows for a kind of circuit structure of new-energy automobile high-voltage electric system that another embodiment of the application is provided
It is intended to；
Fig. 3 shows for a kind of circuit structure of new-energy automobile high-voltage electric system that another embodiment of the application is provided
It is intended to.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the 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 includes：First preliminary filling loop 100, second is pre-
Fill loop 200, power-assisted steering branch road, motor branch road, electric compressor branch road, direct current converting branch, electronic defrosting branch road, air-conditioning
Branch road, the 3rd contactor K3, the 5th contactor K5 and control module；Wherein,
The first preliminary filling loop 100 includes first contactor K1, second contactor K2 and the first preliminary filling resistance R1, its
In, it is in parallel with the first contactor K1 after the second contactor K2 and the first preliminary filling resistance R1 concatenations；
The second preliminary filling loop 200 includes the 11st contactor K11, the 12nd contactor K12 and the second preliminary filling resistance
R2, wherein, after the 12nd contactor K12 and the second preliminary filling resistance R2 concatenations with the 11st contactor K11 simultaneously
Connection；
The power-assisted steering branch road includes the 4th contactor K4 and electric boosting steering system EPS of concatenation；
The motor branch road includes the 6th contactor K6 and motor system MCU of concatenation；
The electric compressor branch road 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 road includes the 9th contactor K9 and electronic except defrosting system PTC of concatenation；
The air-conditioning branch road includes the tenth contactor K10 of concatenation and electric air-conditioning EAC；
The first preliminary filling loop 100 is serially connected between the both positive and negative polarity of the electrokinetic cell, the 5th contactor K5 mono-
End is connected with the first preliminary filling loop 100 away from described power battery anode one end, and the other end connects with the first high-pressure modular 500
Connect, first high-pressure modular 500 is connected away from described 5th contactor K5 one end with the 3rd contactor K3, described
Three contactor K3 are connected away from described 5th contactor K5 one end with the negative pole of the electrokinetic cell；
One end of the second high-pressure modular 400 is connected to the connection of the 5th contactor K5 and the first preliminary filling loop 100
It is another to be terminated on the 3rd contactor K3 and the connecting line of first high-pressure modular 500 on line；
One end in the second preliminary filling loop 200 is connected to the power battery anode with the first preliminary filling loop 100
On connecting line, another one end for being terminated at the 3rd high-pressure modular 300, the 3rd high-pressure modular 300 is away from second preliminary filling
The one end of loop 200 is with the 3rd contactor K3 away from described power battery cathode one end；
First high-pressure modular 500 includes motor branch road in parallel, direct current converting branch, electronic defrosting branch road and air-conditioning
Branch road；
Second high-pressure modular 400 includes electric compressor branch road, and the 3rd high-pressure modular 300 includes power-assisted steering
Branch road, or, second high-pressure modular 400 is sky, the 3rd high-pressure modular 300 includes power-assisted steering branch road and electricity in parallel
Dynamic air compressor machine branch road；
The control module is used to control first high-pressure modular 500, the second high-pressure modular 400 and the 3rd high-pressure modular
300 enter electricity and electricity under high pressure on horizontal high voltage；
The control module controls first high-pressure modular 500, the second high-pressure modular 400 and the 3rd high-pressure modular 300
Electricity includes under entering horizontal high voltage：Receiving the motor system MCU, electric compressor system EAS, direct current transducer
DCDC, it is electronic except defrosting system PTC or electricity air-conditioning EAC level faults alarm when, disconnection occurs where the high tension apparatus of level fault
The contactor of branch road；When one-level insulation alarm is received, the 5th contactor K5 is disconnected, and sentence after the first Preset Time
Whether disconnected one-level insulation alarm releases, if it is not, then disconnecting the first contactor K1 and for second high-pressure modular 400 is high
Electricity is broken, and judges whether one-level insulation alarm releases after the second Preset Time, if it is not, then disconnecting the 4th contactor
K4 and the 11st contactor K11, and judge whether one-level insulation alarm releases after the 3rd Preset Time, if it is not, then disconnecting
3rd contactor K3, and judge whether one-level insulation alarm contacts after the 4th Preset Time, if not, judging the power electric
Pond failure.
It should be noted that receiving the motor system MCU, electric compressor system EAS, direct current transducer
DCDC, it is electronic except defrosting system PTC or electricity air-conditioning EAC level faults alarm when, disconnection occurs where the high tension apparatus of level fault
The contactor of branch road refers to as the motor system MCU, electric compressor system EAS, direct current transducer DCDC, electronic removes
When defrosting system PTC or electricity air-conditioning EAC individually level fault occur, only the high tension apparatus for level fault occur are entered with horizontal high voltage power-off
Treatment.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 of converting branch is flowed, powers off the direct current transducer DCDC high pressures, without influenceing other high tension apparatus
Normal work.
In one embodiment of the application, the situation that level fault occurs in the servo steering system is advised
Fixed, generally, the servo steering system is not in level fault, and once one-level occurs in the servo steering system
During failure, in the present embodiment, the control module also can disconnect the servo steering system where power-assisted steering branch road
4th contactor K4.But in a preferred embodiment of the application, the control module be additionally operable to receive it is described electronic
When servo steering system EPS level faults are alarmed, electric power steering fault alarm is sent, and disconnected after the 5th Preset Time
The 4th contactor K4K4.So the electric boosting steering system EPS level fault reports are received in the control module
In the 5th alert Preset Time, the electric boosting steering system EPS is maintained to normal work, so that driver makes
Remedial measure.The span of the 5th Preset Time can be 10s ± 5s, including endpoint value, the electric power steering
The concrete form of fault alarm can be buzz or indicator lamp flicker.Specific value of the application to the 5th Preset Time
Concrete form with the electric power steering fault alarm is not limited, specific depending on actual conditions.
In addition, when there is one-level insulation alarm, being first considered that the one-level insulation alarm is due to the 3rd high pressure
What module 300 caused, the 5th contactor K5 is now disconnected, by the high pressure of the 3rd high-pressure modular 300 power-off, it is ensured that described
The normal operation of servo steering system；After the first Preset Times of the 5th contactor K5 are disconnected, if first insulation
Alarm is not still released, then it is assumed that first insulation alarm is caused due to second high-pressure modular 400, is now disconnected
The first contactor K1 and be the high pressure of the second high-pressure modular 400 power-off, only disconnects the 5th contactor K5 the
One Preset Time, after disconnecting the Preset Times of first contactor K1 second, when the one-level insulation alarm is not still released,
The 4th contactor K4 and the 11st contactor K11 is disconnected, by servo steering system high pressure power-off, by this lower electricity
Strategy, reduces the possibility of the high pressure power-off of the servo steering system, it is achieved thereby that reducing due to new energy as much as possible
The servo steering system failure of automobile, so that driver is difficult to change vehicle running orbit, and then is likely to result in accident
The purpose of probability.
Further, after the 4th contactor K4 disconnects the 3rd Preset Time, if the one-level insulation alarm is still
Do not release so, then judge that main negative loop or electrokinetic cell have insulation fault, it is considered to vehicle safety, disconnect the 3rd contactor
K3, the power-off of vehicle high pressure；If the one-level insulation alarm is not yet after the 3rd contactor K3 disconnects the 4th Preset Time
Release, then judge the electrokinetic cell failure, now driver can search insulation fault point for the electrokinetic cell.Therefore
First high-pressure modular 500, the second high-pressure modular 400 and the 3rd high-pressure modular 300 described in the control module enter electricity under horizontal high voltage
Strategy additionally aid help driver determine break down the reason for and failure high tension apparatus.
In addition, first high-pressure modular 500, the second high-pressure modular 400 and the 3rd high-pressure modular 300 use two preliminary fillings
Electricity on horizontal high voltage is entered in loop, reduces the operating current on same preliminary filling loop, reduces the probability that preliminary filling loop is burnt, and carries
The job stability of the new-energy automobile high-voltage electric system is risen.
Also, it should be noted that second high-pressure modular refers to that second high-pressure modular is open circuit for sky, i.e., such as Fig. 2
Shown connected mode.And in view of braking safe, connected mode as shown in Figure 2 is preferably taken, i.e., described second high pressure
Module 400 is sky, and the 3rd high-pressure modular 300 includes power-assisted steering branch road and electric compressor branch road in parallel.So exist
When the 5th contactor K5 disconnects, the electric compressor branch road still can be with normal work, i.e., described new-energy automobile is still
So can normally perform brake operation.
On the basis of above-described embodiment, in a preferred embodiment of the application, the control module is additionally operable to sentence
Whether the speed of the disconnected new-energy automobile is more than preset vehicle speed；
When the speed of the new-energy automobile is more than preset vehicle speed, the control module controls first high-pressure modular
500th, electricity includes under the second high-pressure modular 400 and the 3rd high-pressure modular 300 enter horizontal high voltage：Receiving the motor system
It is MCU, electric compressor system EAS, direct current transducer DCDC, electronic except defrosting system PTC or electricity air-conditioning EAC level faults are alarmed
When, there is the contactor of the high tension apparatus place branch road of level fault in disconnection；When one-level insulation alarm is received, disconnect described
5th contactor K5, and judge whether one-level insulation alarm releases after the first Preset Time, if it is not, then disconnecting described first
Contactor K1 and be the high pressure of the second high-pressure modular 400 power-off, and judges that one-level insulation alarm is after the second Preset Time
No releasing, if it is not, then disconnecting the 4th contactor K4 and the 11st contactor K11, and judges after the 3rd Preset Time
Whether one-level insulation alarm releases, if it is not, then disconnecting the 3rd contactor K3, and judges a class B insulation after the 4th Preset Time
Whether alarm contacts, if not, judging the electrokinetic cell 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
Electricity includes under die block 500, the second high-pressure modular 400 and the 3rd high-pressure modular 300 enter horizontal high voltage：Receiving the driving electricity
It is machine system MCU, electric compressor system EAS, direct current transducer DCDC, electronic except defrosting system PTC or electric air-conditioning EAC level faults
During alarm, there is the contactor of the high tension apparatus place branch road of level fault in disconnection；When one-level insulation alarm is received, to institute
Stating the first high-pressure modular 500, the second high-pressure modular 400 and the 3rd high-pressure modular 300 carries out drop Power Processing, when the 5th is default
Between after disconnect the 5th contactor K5, and judge that one-level is exhausted after the first Preset Time after disconnecting the 5th contactor K5
Whether edge alarm releases, if it is not, then disconnecting the first contactor K1 and for the high pressure of the second high-pressure modular 400 is powered off,
And judge whether one-level insulation alarm releases after the second Preset Time, if it is not, then disconnecting the 4th contactor K4 and the
11 contactor K11, and judge whether one-level insulation alarm releases after the 3rd Preset Time, if it is not, then disconnect the 3rd connecing
Tentaculum K3, and judge whether one-level insulation alarm contacts after the 4th Preset Time, if not, judging the electrokinetic cell event
Barrier.
It should be noted that in one embodiment of the application, the span of the 5th Preset Time can be
5s ± 3s, including endpoint value.The span of the preset vehicle speed is 10km/h-20km/h, including endpoint value.The application's
In one embodiment, the value of the 5th 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 5th 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 5th Preset Time and the specific value of span and the preset vehicle speed
Do not limited with span, it is specific depending on actual conditions.
It is first Preset Time, second pre- in another embodiment of the application on the basis of above-described embodiment
If the span of time, the 3rd Preset Time and the 4th Preset Time is 10s ± 5s, including endpoint value.
It should be noted that first Preset Time, the second Preset Time, the 3rd Preset Time and the 4th Preset Time
Specific value and span can be with identical, it is also possible to it is different.When the application presets to first Preset Time, second
Between, the specific value and span of the 3rd Preset Time and the 4th Preset Time do not limit, specifically regard actual conditions and
It is fixed.
It should be noted that when second high-pressure modular 400 is space-time, second Preset Time can be zero.
On the basis of above-described embodiment, in a preferred embodiment of the application, as shown in figure 3, the power-assisted turns
Also include to branch road, motor branch road, electric compressor branch road, direct current converting branch, electronic defrosting branch road and air-conditioning branch road respective
The fuse FUSE of concatenation.
It should be noted that Fig. 3 illustrate only on the basis of the circuit structure shown in Fig. 2, the power-assisted steering branch road,
Motor branch road, electric compressor branch road, direct current converting branch, electronic defrosting branch road and air-conditioning branch road each concatenate a fuse
Circuit structure after FUSE, does not show that on the basis of the circuit structure shown in Fig. 1, the power-assisted steering branch road, motor
Branch road, electric compressor branch road, direct current converting branch, electronic defrosting branch road and air-conditioning branch road each concatenate a fuse FUSE
Circuit structure afterwards.
In addition, not marking the first preliminary filling loop 100, the second preliminary filling loop 200, first pressing mold high in Fig. 3 yet
Block 500, the second high-pressure modular 400 and the 3rd high-pressure modular 300.
Also, it should be noted that the power-assisted steering branch road, motor branch road, electric compressor branch road, direct current converting branch,
Electronic defrosting branch road and air-conditioning branch road also include that the branch road that the fuse FUSE of each concatenation is mainly used in where respective is provided
Overcurrent protection.
On the basis of above-described embodiment, in another preferred embodiment of the application, the control module controls institute
The first high-pressure modular 500, the second high-pressure modular 400 and the 3rd high-pressure modular 300 is stated to enter electricity on horizontal high voltage and include：
The 3rd contactor K3, the 4th contactor K4 and the 5th contactor K5 is controlled to close after low pressure power on signal is received
Close, control second contactor K2 and the 12nd contactor K12 closures after high-voltage signal on receiving, and judge the first precharge
Whether pressure is more than or equal to the first predeterminated voltage, and whether the second pre-charge pressure is more than or equal to the second predeterminated voltage, if
It is then to control first contactor K1 and the 11st contactor K11 closures, second contactor K2 and the 12nd contactor K12 to disconnect.
It should be noted that the value of first predeterminated voltage and the second predeterminated voltage is the electrokinetic cell voltage
90%-98%, including endpoint value.And first predeterminated voltage and the second predeterminated voltage can be the same or different.This
Apply not limiting the specific value and correlation of first predeterminated voltage and the second predeterminated voltage, it is specific to regard actual
Depending on situation.
Accordingly, the embodiment of the present application additionally provides a kind of new-energy automobile, including at least one any implementation as described above
New-energy automobile high-voltage electric system described in example.
In sum, the embodiment of the present application provides a kind of new-energy automobile and its high-voltage electric system, wherein, it is described new
Energy automobile high-voltage electric system is tactful by electricity under the circuit structure and high pressure that redesign the high-voltage electric system, from
And realize that the high pressure for avoiding servo steering system unnecessary is powered off, so as to reduce because the servo steering system of new-energy automobile loses
Spirit, so that driver is difficult to change vehicle running orbit, and then is likely to result in the purpose of the probability of accident.Specifically, institute
State the first preliminary filling loop 100 to be serially connected between the both positive and negative polarity of the electrokinetic cell, described 5th contactor K5 one end and described
One preliminary filling loop 100 connects away from described power battery anode one end, and the other end is connected with the first high-pressure modular 500, and described
One high-pressure modular 500 is connected away from described 5th contactor K5 one end with the 3rd contactor K3, the 3rd contactor
K3 is connected away from described 5th contactor K5 one end with the negative pole of the electrokinetic cell；One end of the second high-pressure modular 400 is connected to
On the 5th contactor K5 and the connecting line in the first preliminary filling loop 100, it is another be terminated at the 3rd contactor K3 with
On the connecting line of first high-pressure modular 500；One end in the second preliminary filling loop 200 be connected to the power battery anode with
On the connecting line in the first preliminary filling loop 100, another one end for being terminated at the 3rd high-pressure modular 300, the 3rd pressing mold high
Block 300 is away from described one end of second preliminary filling loop 200 with the 3rd contactor K3 away from described power battery cathode one end；When
It is the motor system MCU, electric compressor system EAS, direct current transducer DCDC, electronic except defrosting system PTC or electric air-conditionings
When level fault occurs in EAC, the contactor of branch road where the high tension apparatus for level fault occur only is disconnected, it is ensured that other high-voltage devices
The normal operation of part, it is to avoid the high tension apparatus outside the servo steering system level fault occur and make the power-assisted steering system
The situation of system high pressure power-off occurs；In addition, when there is one-level insulation alarm, be first considered that the one-level insulation alarm be due to
What the 3rd high-pressure modular 300 caused, the 5th contactor K5 is now disconnected, by the high pressure of the 3rd high-pressure modular 300
Power-off, it is ensured that the normal operation of the servo steering system；After the first Preset Times of the 5th contactor K5 are disconnected, if
First insulation alarm is not still released, then it is assumed that first insulation alarm is because second high-pressure modular 400 draws
Rise, now disconnect the first contactor K1 and be the high pressure of the second high-pressure modular 400 power-off, only in disconnection described the
Five the first Preset Times of contactor K5, after disconnecting the Preset Times of first contactor K1 second, the one-level insulation alarm is still
So when not releasing, the 4th contactor K4 and the 11st contactor K11 is just disconnected, broken the servo steering system is high
Electricity, by this lower electricity strategy, reduces the possibility of the high pressure power-off of the servo steering system as much as possible, it is achieved thereby that
Reduce due to the servo steering system failure of new-energy automobile, so that driver is difficult to change vehicle running orbit, and then
It is likely to result in the purpose of the probability of accident.
Further, after the 4th contactor K4 disconnects the 3rd Preset Time, if the one-level insulation alarm is still
Do not release so, then judge that main negative loop or electrokinetic cell have insulation fault, it is considered to vehicle safety, disconnect the 3rd contactor
K3, the power-off of vehicle high pressure；If the one-level insulation alarm is not yet after the 3rd contactor K3 disconnects the 4th Preset Time
Release, then judge the electrokinetic cell failure, now driver can search insulation fault point for the electrokinetic cell.Therefore
First high-pressure modular 500, the second high-pressure modular 400 and the 3rd high-pressure modular 300 described in the control module enter electricity under horizontal high voltage
Strategy additionally aid help driver determine break down the reason for and failure high tension apparatus.
In addition, first high-pressure modular 500, the second high-pressure modular 400 and the 3rd high-pressure modular 300 use two preliminary fillings
Electricity on horizontal high voltage is entered in loop, reduces the operating current on same preliminary filling loop, reduces the probability that preliminary filling loop is burnt, and carries
The job stability of the new-energy automobile high-voltage electric system is risen.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for 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, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (10)
1. a kind of new-energy automobile high-voltage electric system, it is characterised in that be applied to the new-energy automobile with electrokinetic cell, institute
Stating new-energy automobile high-voltage electric system includes：First preliminary filling loop, the second preliminary filling loop, power-assisted steering branch road, motor branch road,
Electric compressor branch road, direct current converting branch, electronic defrosting branch road, air-conditioning branch road, the 3rd contactor, the 5th contactor and control
Module；Wherein,
The first preliminary filling loop includes first contactor, second contactor and the first preliminary filling resistance, wherein, second contact
It is in parallel with the first contactor after device and the first preliminary filling resistance concatenation；
The second preliminary filling loop includes the 11st contactor, the 12nd contactor and the second preliminary filling resistance, wherein, the described tenth
It is in parallel with the 11st contactor after two contactors and the second preliminary filling resistance concatenation；
The power-assisted steering branch road includes the 4th contactor and electric boosting steering system of concatenation；
The motor branch road includes the 6th contactor and motor system of concatenation；
The electric compressor branch road 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 road includes the 9th contactor and electronic except defrosting system of concatenation；
The air-conditioning branch road includes the tenth contactor of concatenation and electric air-conditioning；
The first preliminary filling loop is serially connected between the both positive and negative polarity of the electrokinetic cell, described 5th contactor one end and described
One preliminary filling loop connects away from described power battery anode one end, and the other end is connected with the first high-pressure modular, first high pressure
Module is connected away from described 5th contactor one end with the 3rd contactor, and the 3rd contactor connects away from the described 5th
Tentaculum one end is connected with the negative pole of the electrokinetic cell；
One end of the second high-pressure modular is connected on the 5th contactor and the connecting line in the first preliminary filling loop, another termination
In on connecting line of the 3rd contactor with first high-pressure modular；
One end in the second preliminary filling loop is connected on the power battery anode and the connecting line in the first preliminary filling loop, separately
One end is connected to one end of the 3rd high-pressure modular, and the 3rd high-pressure modular is away from described second preliminary filling loop one end and the described 3rd
Contactor is away from described power battery cathode one end；
First high-pressure modular includes motor branch road in parallel, direct current converting branch, electronic defrosting branch road and air-conditioning branch road；
Second high-pressure modular includes electric compressor branch road, and the 3rd high-pressure modular includes power-assisted steering branch road, or, institute
It is sky to state the second high-pressure modular, and the 3rd high-pressure modular includes power-assisted steering branch road and electric compressor branch road in parallel；
The control module is used to control first high-pressure modular, the second high-pressure modular and the 3rd high-pressure modular to enter horizontal high voltage
Electricity under electricity and high pressure；
The control module controls first high-pressure modular, the second high-pressure modular and the 3rd high-pressure modular to enter electricity bag under horizontal high voltage
Include：Receiving the motor system, electric compressor system, direct current transducer, electronic except defrosting system or electric air-conditioning one
During level fault alarm, there is the contactor of the high tension apparatus place branch road of level fault in disconnection；Receiving one-level insulation alarm
When, the 5th contactor is disconnected, and judge whether one-level insulation alarm releases after the first Preset Time, if it is not, then disconnected
Open the first contactor and for the second high-pressure modular high pressure is powered off, and a class B insulation report is judged after the second Preset Time
Whether police releases, if it is not, then disconnecting the 4th contactor and the 11st contactor, and judges one after the 3rd Preset Time
Whether class B insulation alarm releases, if it is not, then disconnecting the 3rd contactor, and judges one-level insulation alarm after the 4th Preset Time
Whether contact, if not, judging the electrokinetic cell failure.
2. new-energy automobile high-voltage electric system according to claim 1, it is characterised in that the control module controls institute
Stating the first high-pressure modular, the second high-pressure modular and the 3rd high-pressure modular and entering electricity on horizontal high voltage includes：
The 3rd contactor, the 4th contactor and the 5th contactor closure are controlled after low pressure power on signal is received, is being received
Second contactor and the 12nd contactor closure are controlled after upper high-voltage signal, and judges whether the first pre-charge pressure is more than or equal to
First predeterminated voltage, and whether the second pre-charge pressure is more than or equal to the second predeterminated voltage, if it is, control first is contacted
Device and the 11st contactor closure, second contactor and the 12nd contactor disconnect.
3. new-energy automobile high-voltage electric system according to claim 1, it is characterised in that the control module is additionally operable to
Judge the speed of the new-energy automobile whether more than preset vehicle speed；
When the speed of the new-energy automobile is more than preset vehicle speed, the control module controls first high-pressure modular, the
Electricity includes under two high-pressure modulars and the 3rd high-pressure modular enter horizontal high voltage：Receiving the motor system, electric compressor
System, direct current transducer, it is electronic except defrosting system or electric air-conditioning level fault alarm when, there are the high tension apparatus of level fault in disconnection
The contactor of place branch road；When one-level insulation alarm is received, the 5th contactor is disconnected, and after the first Preset Time
Judge whether one-level insulation alarm releases, if it is not, then disconnecting the first contactor and for the second high-pressure modular high pressure
Power-off, and judges whether one-level insulation alarm releases after the second Preset Time, if it is not, then disconnect the 4th contactor with
11st contactor, and judge whether one-level insulation alarm releases after the 3rd Preset Time, if it is not, then disconnect the 3rd contacting
Device, and judge whether one-level insulation alarm contacts after the 4th Preset Time, if not, judging the electrokinetic cell failure；
When the speed of the new-energy automobile is less than or equal to preset vehicle speed, the control module controls first pressing mold high
Electricity includes under block, the second high-pressure modular and the 3rd high-pressure modular enter horizontal high voltage：Receiving the motor system, electronic sky
Press system, direct current transducer, it is electronic except defrosting system or electric air-conditioning level fault alarm when, there is the high pressure of level fault in disconnection
The contactor of branch road where device；When one-level insulation alarm is received, to first high-pressure modular, the second high-pressure modular and
3rd high-pressure modular carries out drop Power Processing, disconnects the 5th contactor after the 5th Preset Time, and disconnects described the
Judge whether one-level insulation alarm releases after the first Preset Time after five contactors, if it is not, then disconnecting first contact
Device and be the second high-pressure modular high pressure power-off, and judges whether one-level insulation alarm releases, such as after the second Preset Time
It is really no, then the 4th contactor and the 11st contactor are disconnected, and judge that one-level insulation alarm is after the 3rd Preset Time
No releasing, if it is not, then disconnecting the 3rd contactor, and judges whether one-level insulation alarm contacts, such as after the 4th Preset Time
It is really no, judge the electrokinetic cell failure.
4. new-energy automobile high-voltage electric system according to claim 3, it is characterised in that the 5th Preset Time
Span is 5s ± 3s, including endpoint value.
5. new-energy automobile high-voltage electric system according to claim 3, it is characterised in that the value of the preset vehicle speed
Scope is 10km/h-20km/h, including endpoint value.
6. new-energy automobile high-voltage electric system according to claim 1, it is characterised in that first Preset Time,
The span of the second Preset Time, the 3rd Preset Time and the 4th Preset Time is 10s ± 5s, including endpoint value.
7. new-energy automobile high-voltage electric system according to claim 1, it is characterised in that the control module is additionally operable to
When the electric boosting steering system level fault alarm is received, electric power steering fault alarm is sent, and the 6th
The 4th contactor is disconnected after Preset Time.
8. new-energy automobile high-voltage electric system according to claim 7, it is characterised in that the 6th Preset Time
Span is 10s ± 5s, including endpoint value.
9. new-energy automobile high-voltage electric system according to claim 1, it is characterised in that the power-assisted steering branch road,
Motor branch road, electric compressor branch road, direct current converting branch, electronic defrosting branch road and air-conditioning branch road also include that what is each concatenated melts
Disconnected device.
10. a kind of new-energy automobile, it is characterised in that including at least one new energy as described in claim any one of 1-9
Automobile high-voltage electricity gas system.
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| CN106740127B (en) | 2019-02-12 |
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