CN109951095A - A kind of three-phase inverting circuit, device and the automobile of integrated driving charge function - Google Patents
A kind of three-phase inverting circuit, device and the automobile of integrated driving charge function Download PDFInfo
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Abstract
The present invention relates to three-phase inverting circuit, device and the automobiles of a kind of integrated driving charge function, according to the control switched in the first charging circuit and the second charging circuit, it can be realized the charging of power battery, according to the control switched in the first driving circuit and the second driving circuit, the driving of motor can be realized by power battery.Meanwhile it not needing not influencing charging normal for battery whether the three-phase windings, i.e. three-phase windings open circuit by motor when power battery is charged.And, when there is short trouble in the power tube of inverter circuit, it can be by being switched on-off in control (first/second) charging circuit and (first/second) driving circuit, stop occurring the inverter bridge module work of short trouble, guarantee the normal work of fault-free inverter bridge module simultaneously, it is ensured that automobile, which is able to carry out, while an inverter module failure charges normal and drive.
Description
Technical field
The invention belongs to electric system and control technology fields, and in particular to a kind of three contraries of integrated driving charge function
Power transformation road, device and automobile.
Background technique
Electric car is as the current important channel for solving field of traffic environmental pollution and energy crisis, more by the whole world
The concern in field, in current automotive industry technology increasingly mature today, the crucial restriction problem that electric car popularizes is
Battery and charging technique, wherein charging technique becomes the key of electric car continuation of the journey and cost.
Currently, there are two types of the battery charging modes of electric car, a kind of vehicle-mounted trickle charge device fills the charging of battery
It sets on placement electric car, can use common single phase alternating current power supply or be placed in public building and residential area parking lot
Charging socket or charging pile plug in, and have the advantages that charging convenience, but this at a slow speed charging unit the problem is that
Charge power is smaller, and Vehicular accumulator cell is fully charged to be taken a long time, and influences the utilization rate of electric car, and the Vehicular charger
It is intrinsic load during electric automobile during traveling, influences the promotion of vehicle runnability；Another is filled to solve trickle charge
The quick charge stake for setting charging rate, is typically arranged in special charging station, by high power converter by industrial three-phase alternating current
High power DC electricity is converted to, charges directly to Vehicular accumulator cell, the charging of battery, energy can be rapidly completed in a short time
Enough effectively improve the charge efficiency and utilization rate of electric car, but the quick charge device due to power, volume and weight compared with
Greatly, it is installed on electric car and seriously occupies the limited space of electric car and weight resource, promoting applying for electric car
Needed in journey assist establish matched quick charge station, equally cost, market and in terms of also receive very
Big limitation, and inverter is the weak link in drive system of electric automobile, and the power tube of inverter easily breaks down,
Inverter, which breaks down, will affect the normally travel of electric car.Therefore, the fault-toleranr technique for studying inverter is also most important.
In the prior art, notification number provides a kind of electric car driving charging one for 206141362 Chinese patent
Makeup is set, which needs to charge the battery by machine winding, then when machine winding generates open circuit fault
Battery charging can not be carried out, on the other hand, short circuit event occurs in IGBT power tube of the integrated apparatus in inverter bridge module
When barrier, the inverter bridge module for being unable to control generation short trouble stops working, it cannot be guaranteed that work normally, therefore, the integration
The functional reliability of device is lower, may not apply to practical electric car.
Summary of the invention
The object of the present invention is to provide three-phase inverting circuit, device and the automobiles of a kind of integrated driving charge function, are used for
Normal work can not be guaranteed when short circuit occurs in the power tube of inverter circuit by solving existing electric car driving charging integrated device
The problem of making.
In order to solve the above technical problems, the present invention proposes a kind of three-phase inverting circuit of integrated driving charge function, including
Following circuits scheme:
Circuit arrangement one, including the first inverter bridge module and the second inverter bridge module, the DC side of the first inverter bridge module
With for connecting power battery, the exchange side of the first inverter bridge module is separately connected after the DC side parallel of the second inverter bridge module
First charging paths and the first driving branch, the exchange side of the second inverter bridge module are separately connected the second charging paths and second and drive
Dynamic branch, wherein the first charging paths, the first driving branch, the second charging paths, the second driving branch are respectively equipped with switch,
First charging paths and the second charging paths are used to connection charge power supply, and the first driving branch and the second driving branch are used to
Connect the three-phase windings of motor.
Circuit arrangement two, on the basis of circuit arrangement one, first inverter bridge module includes three bridge arms in parallel,
String is equipped with respective switch and two IGBT modules on each bridge arm；Second inverter bridge module includes three bridge arms in parallel,
String is equipped with respective switch and two IGBT modules on each bridge arm.
Circuit arrangement three, on the basis of circuit arrangement two, the first charging paths and the second charging paths pass through same
Transformer is for connecting charge power supply.
Circuit arrangement four, on the basis of circuit arrangement three, the transformer is step-down transformer.
Circuit arrangement five, on the basis of circuit arrangement one, each mutually switch in the first charging paths is linkage control, the
Each mutually switch of one driving branch road is linkage control, and each mutually switch in the second charging paths is linkage control, the second driving
Each mutually switch of branch road is linkage control.
Circuit arrangement six, seven, respectively on the basis of circuit arrangement one, five, the switch is relay switch.
In order to solve the above technical problems, the present invention also proposes a kind of electric car driving charging integrating device, including following
Device scheme:
Device scheme one, including three-phase inverting circuit and power battery, the three-phase inverting circuit include the first inverter bridge mould
It is connected after the DC side parallel of block and the second inverter bridge module, the DC side of the first inverter bridge module and the second inverter bridge module dynamic
Power battery, the exchange side of the first inverter bridge module are separately connected the first charging paths and the first driving branch, the second inverter bridge mould
The exchange side of block be separately connected the second charging paths and second driving branch, wherein the first charging paths, first driving branch,
Second charging paths, the second driving branch are respectively equipped with switch, and the first charging paths and the second charging paths are used to connection and fill
Power supply, the first driving branch and the second driving branch are used to the three-phase windings of connection motor.
Device scheme two, on the basis of device scheme one, first inverter bridge module includes three bridge arms in parallel,
String is equipped with respective switch and two IGBT modules on each bridge arm；Second inverter bridge module includes three bridge arms in parallel,
String is equipped with respective switch and two IGBT modules on each bridge arm.
Device scheme three, on the basis of device scheme two, the first charging paths and the second charging paths pass through same
Transformer is for connecting charge power supply.
Device scheme four, on the basis of device scheme three, the transformer is step-down transformer.
Device scheme five, on the basis of device scheme one, each mutually switch in the first charging paths is linkage control, the
Each mutually switch of one driving branch road is linkage control, and each mutually switch in the second charging paths is linkage control, the second driving
Each mutually switch of branch road is linkage control.
Device scheme six, seven, respectively on the basis of device scheme one, five, the switch is relay switch.
In order to solve the above technical problems, the present invention also proposes a kind of electric car, including following automobile scheme:
Automobile scheme one, including charging integrating device is driven, driving charging integrating device includes three-phase inverting circuit and moves
Power battery, the three-phase inverting circuit include the first inverter bridge module and the second inverter bridge module, the direct current of the first inverter bridge module
Power battery is connected after the DC side parallel of side and the second inverter bridge module, the exchange side of the first inverter bridge module is separately connected
One charging paths and the first driving branch, the exchange side of the second inverter bridge module are separately connected the second charging paths and the second driving
Branch, wherein the first charging paths, the first driving branch, the second charging paths, the second driving branch are respectively equipped with switch, the
One charging paths and the second charging paths are used to connection charge power supply, and the first driving branch and the second driving branch are all connected with electricity
The three-phase windings of machine.
Automobile scheme two, on the basis of automobile scheme one, first inverter bridge module includes three bridge arms in parallel,
String is equipped with respective switch and two IGBT modules on each bridge arm；Second inverter bridge module includes three bridge arms in parallel,
String is equipped with respective switch and two IGBT modules on each bridge arm.
Automobile scheme three, on the basis of automobile scheme two, the first charging paths and the second charging paths pass through same
Transformer connects charge power supply.
Automobile scheme four, on the basis of automobile scheme three, the transformer is step-down transformer.
Automobile scheme five, on the basis of automobile scheme one, each mutually switch in the first charging paths is linkage control, the
Each mutually switch of one driving branch road is linkage control, and each mutually switch in the second charging paths is linkage control, the second driving
Each mutually switch of branch road is linkage control.
Automobile scheme six, seven, respectively on the basis of automobile scheme one, five, the switch is relay switch.
The beneficial effects of the present invention are:
The present invention can be realized filling for power battery according to the control switched in the first charging circuit and the second charging circuit
Electricity can realize the driving of motor according to the control switched in the first driving circuit and the second driving circuit by power battery.
Meanwhile it not needing not influence electricity whether the three-phase windings, i.e. three-phase windings open circuit by motor when power battery is charged
Pond charges normal.Also, when short trouble occurs in the power tube of inverter circuit, it can be charged by control (first/second)
It is switched on-off in circuit and (first/second) driving circuit, stops the inverter bridge module work that short trouble occurs, protect simultaneously
Demonstrate,prove the normal work of fault-free inverter bridge module, it is ensured that automobile, which is able to carry out, while an inverter module failure normally fills
Electricity and driving.
Further, string is equipped with controllable switch on each bridge arm of each inverter bridge module, in inverter bridge module
In power tube short circuit occurs or when open circuit fault, does not control whether inverter bridge module works by the on-off of control power tube,
But the on-off by controlling controllable switch directly controls whether inverter bridge module puts into, it is ensured that the reliable investment of inverter bridge module
Or excision.
Further, the switch on (first/second) charging circuit for being connected to inverter module exchange side, i.e., first
It is connected in charging circuit and uses linkage control between the switch of each bridge arm of inverter bridge module, connect inversion in the second charging circuit
Also linkage control is used between the switch of each bridge arm of bridge module, equally, the switch of the first driving branch road is linkage control, the
The switch of two driving branch roads is also linkage control, ensure that the quick excision that power tube breaks down.
Detailed description of the invention
Fig. 1 is double three-phase inverting circuit figures of a kind of integrated driving and charge function of the invention；
Fig. 2 is the fault tolerable circuit figure after the first bridge arm in Fig. 1 breaks down.
Specific embodiment
A specific embodiment of the invention is further described with reference to the accompanying drawing.
The present invention proposes a kind of electric car of three-phase inverting circuit with integrated driving charge function, on electric car
Driving charging integrating device include three-phase inverting circuit and power battery, which includes the first inverter bridge module
With the second inverter bridge module, power is connected after the DC side parallel of the DC side of the first inverter bridge module and the second inverter bridge module
Battery, the exchange side of the first inverter bridge module are separately connected the first charging paths and the first driving branch, the second inverter bridge module
Exchange side be separately connected the second charging paths and the second driving branch, wherein the first charging paths, the first driving branch, the
Two charging paths, the second driving branch are respectively equipped with switch, and the first charging paths and the second charging paths are all connected to automobile
Three-phase charging interface, and by three-phase charging interface for connecting external charging power supply, the first driving branch and the second driving branch
Road is all connected with the three-phase windings of electric motor of automobile.
Above-mentioned first inverter bridge module is identical with the second inverter bridge module structure, i.e., any inverter bridge module includes three
Bridge arm in parallel, string is equipped with respective switch and two IGBT modules on each bridge arm.Pass through positive and negative mother after three bridge arms are in parallel
Line is connected respectively on the positive and negative electrode of power battery, draws output end between the connecting line of two IGBT modules on each bridge arm,
Exchange side as inverter bridge module.
The three-phase inverting circuit is integrated with driving and the charge function of electric car, in charge mode, disconnects first and drives
Switch on dynamic circuit and the second driving circuit, the switch being closed on the first charging circuit and the second charging circuit, by alternating current from
The charging interface of automobile is introduced as power battery charging.In drive mode, it is closed the first driving circuit and the second driving circuit
On switch, the switch on the first charging circuit and the second charging circuit is disconnected, by power battery to the three-phase windings of motor
Energization driving motor.
The present invention can be realized filling for power battery according to the control switched in the first charging circuit and the second charging circuit
Electricity can realize the driving of motor according to the control switched in the first driving circuit and the second driving circuit by power battery.
Meanwhile it not needing not influence electricity whether the three-phase windings, i.e. three-phase windings open circuit by motor when power battery is charged
Pond charges normal.Also, when short trouble occurs in the power tube of inverter circuit, it can be charged by control (first/second)
It is switched on-off in circuit and (first/second) driving circuit, stops the inverter bridge module work that short trouble occurs, protect simultaneously
Demonstrate,prove the normal work of fault-free inverter bridge module, it is ensured that automobile, which is able to carry out, while an inverter module failure normally fills
Electricity and driving.
String is equipped with controllable switch to the present invention on each bridge arm of each inverter bridge module, in inverter bridge module
Power tube short circuit occurs or when open circuit fault, does not control whether inverter bridge module works by the on-off of control power tube, and
Be by control controllable switch on-off directly control whether inverter bridge module puts into, it is ensured that inverter bridge module it is reliable put into or
Excision.
The switch on (first/second) charging circuit for being connected to inverter module exchange side, i.e., the first charging electricity
It is connected in road and uses linkage control between the switch of each bridge arm of inverter bridge module, connect inverter bridge module in the second charging circuit
Also linkage control is used between the switch of each bridge arm, equally, the switch of the first driving branch road is linkage control, the second driving
The switch of branch road is also linkage control, ensure that the quick excision that power tube breaks down.
Specifically, double three-phase inverting circuits of a kind of integrated driving and charge function as shown in Figure 1, including downconverter
Device (1), relay switch K1 (2), relay switch K2 (3), the first bridge arm (4), the second bridge arm (5), third bridge arm (6),
Four bridge legs (7), the 5th bridge arm (8), the 6th bridge arm (9), relay switch K9 (10), relay switch K10 (11).
Step-down transformer (1) one end is connected with charging interface, one end and relay switch K1 (2) and relay switch K2
(3) it is connected；First bridge arm (4) is sequentially connected in series by relay switch K3, the first power tube Q1, the second power tube Q2；Second
Bridge arm (5) is sequentially connected in series by relay switch K4, third power tube Q3, the 4th power tube Q4；Third bridge arm (6) by after
Electric switch K5, the 5th power tube Q5, the 6th power tube Q6 are sequentially connected in series；Four bridge legs (7) are by relay switch K6,
Seven power tube Q7, the 8th power tube Q8 are sequentially connected in series；5th bridge arm (8) by relay switch K7, the 9th power tube Q9,
Tenth power tube Q10 is sequentially connected in series；6th bridge arm (9) is by relay switch K8, the 11st power tube Q11, the 12nd function
Rate pipe Q12 is sequentially connected in series；Relay switch K9 (10) one end is connected with inverter, first winding of one end and motor
(12) it is connected；Relay switch K10 (11) one end is connected with inverter, and one end is connected (13) with the second winding of motor.
In failure free operation, as shown in Figure 1, relay switch K1 (2) and relay switch K2 (3), is closed
Relay switch K9 (10) and relay switch K10 (11) are closed, You Liuxiang bridge arm is to the first winding of motor (12) and the second winding
(13) power, when charging closing relay switch K1 (2) or relay switch K2 (3), relay switch K9 (10) and after
Electric switch K10 (11) can be achieved with charging to power battery.
When a certain phase bridge arm breaks down, by taking the first bridge arm (4) break down as an example, as shown in Figure 2.When the first phase bridge
When there is open-circuit fault in arm, electric machine controller control switch K3, K4, K5 disconnect, by four bridge legs (7), the 5th bridge arm (8),
6th bridge arm (9) controls machine winding；Motor still is able to operate normally, and performance indexes is filled as before failure generation
Closing relay switch K2 (3), relay switch K9 (10) and relay switch K10 (11) is only needed to can be achieved with when electric
It charges to power battery.
The present invention operates normally Shi Youliu phase bridge arm in inverter circuit and gives double three-phase machine winding power, and when charging only needs
Closing relay switch K1 or relay switch K2, relay switch K9 and relay switch K10 is wanted to can be achieved with to dynamic
Power battery charges；When there is open-circuit fault in a certain bridge arm, system can will therewith the relevant three-phase bridge arm of the winding it is whole
Excision, motor remain to operate normally.It only needs to be closed the relay switch K1 or relay being connected with fault-free bridge arm when charging
Switch K2, relay switch K9 and relay switch K10, are still able to achieve and charge to power battery.
The motor that the present invention uses is AC induction motor, and double three-phase machine stator winding is by two sets of symmetrical three-phases
Winding forms, mutual deviation 30 ° of electrical angles in position between double winding.When dual three-phase induction machine works normally, double winding is whole
It puts into operation, when certain phase winding breaks down, certain faults-tolerant control strategy can be taken, failure phase is cut off, utilize residue
Winding downrating.
To sum up, when inverter circuit of the invention operates normally, six phase bridge arms all put into operation；When an error occurs,
Failure bridge arm is isolated, and motor is still up, and still can be charged normal to power battery, performance indexes and
Failure is the same before occurring, and control is simple, design rationally, power device quantity and increased costs are limited, cost performance is high, fault-tolerant control
Method is simple for system, and when short circuit or open circuit fault occurs in inverter power pipe, inverter remains to work normally, and increases inverse
Become the reliability of device.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (10)
1. a kind of three-phase inverting circuit of integrated driving charge function, which is characterized in that including the first inverter bridge module and second
For connecting power electric after the DC side parallel of inverter bridge module, the DC side of the first inverter bridge module and the second inverter bridge module
Pond, the exchange side of the first inverter bridge module are separately connected the first charging paths and the first driving branch, the second inverter bridge module
Exchange side is separately connected the second charging paths and the second driving branch, wherein the first charging paths, the first driving branch, second
Charging paths, the second driving branch are respectively equipped with switch, and the first charging paths and the second charging paths are used to connection charging electricity
Source, the first driving branch and the second driving branch are used to the three-phase windings of connection motor.
2. the three-phase inverting circuit of integrated driving charge function according to claim 1, which is characterized in that described first is inverse
Becoming bridge module includes three bridge arms in parallel, and string is equipped with respective switch and two IGBT modules on each bridge arm；Described second is inverse
Becoming bridge module includes three bridge arms in parallel, and string is equipped with respective switch and two IGBT modules on each bridge arm.
3. the three-phase inverting circuit of integrated driving charge function according to claim 2, which is characterized in that the first charging branch
Road and the second charging paths are used to connect charge power supply by the same transformer.
4. the three-phase inverting circuit of integrated driving charge function according to claim 3, which is characterized in that the transformer
For step-down transformer.
5. the three-phase inverting circuit of integrated driving charge function according to claim 1, which is characterized in that the first charging branch
Each mutually switch of road is linkage control, and each mutually switch of the first driving branch road is linkage control, in the second charging paths
Each mutually switch is linkage control, and each mutually switch of the second driving branch road is linkage control.
6. the three-phase inverting circuit of integrated driving charge function according to claim 1 or 5, which is characterized in that described to open
Closing is relay switch.
7. a kind of electric car driving charging integrating device, including three-phase inverting circuit and power battery, which is characterized in that this three
Phase inverter circuit includes the first inverter bridge module and the second inverter bridge module, the DC side of the first inverter bridge module and the second inversion
Connect power battery after the DC side parallel of bridge module, the exchange side of the first inverter bridge module be separately connected the first charging paths and
First driving branch, the exchange side of the second inverter bridge module are separately connected the second charging paths and the second driving branch, wherein the
One charging paths, the first driving branch, the second charging paths, the second driving branch are respectively equipped with switch, the first charging paths with
Second charging paths are used to connection charge power supply, and the first driving branch and the second driving branch are used to the three-phase of connection motor
Winding.
8. electric car driving charging integrating device according to claim 7, which is characterized in that the first inverter bridge mould
Block includes three bridge arms in parallel, and string is equipped with respective switch and two IGBT modules on each bridge arm；The second inverter bridge mould
Block includes three bridge arms in parallel, and string is equipped with respective switch and two IGBT modules on each bridge arm.
9. electric car according to claim 8 driving charging integrating device, which is characterized in that the first charging paths and the
Two charging paths are by the same transformer for connecting charge power supply.
10. a kind of electric car, including driving charging integrating device, which is characterized in that driving charging integrating device includes three-phase
Inverter circuit and power battery, the three-phase inverting circuit include the first inverter bridge module and the second inverter bridge module, the first inversion
Power battery, the exchange of the first inverter bridge module are connected after the DC side of bridge module and the DC side parallel of the second inverter bridge module
Side is separately connected the first charging paths and the first driving branch, and the exchange side of the second inverter bridge module is separately connected the second charging branch
Road and the second driving branch, wherein the first charging paths, the first driving branch, the second charging paths, the second driving branch difference
Equipped with switch, the first charging paths and the second charging paths are used to connection charge power supply, the first driving branch and the second driving
Branch is all connected with the three-phase windings of motor.
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| CN201711377884.2A CN109951095A (en) | 2017-12-19 | 2017-12-19 | A kind of three-phase inverting circuit, device and the automobile of integrated driving charge function |
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| CN201711377884.2A CN109951095A (en) | 2017-12-19 | 2017-12-19 | A kind of three-phase inverting circuit, device and the automobile of integrated driving charge function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111262485A (en) * | 2020-02-13 | 2020-06-09 | 格至控智能动力科技（上海）有限公司 | Fault-tolerant operation method of dual three-phase BSG motor |
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