CN106712222B - A kind of commutation protection circuit, commutation guard method and the electric car of electric car - Google Patents
A kind of commutation protection circuit, commutation guard method and the electric car of electric car Download PDFInfo
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- CN106712222B CN106712222B CN201710145877.3A CN201710145877A CN106712222B CN 106712222 B CN106712222 B CN 106712222B CN 201710145877 A CN201710145877 A CN 201710145877A CN 106712222 B CN106712222 B CN 106712222B
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- igbt
- electric car
- bridge circuit
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Abstract
The present invention provides commutation protection circuit, commutation guard method and the electric car of a kind of electric car; wherein; it includes: the first control panel that circuit is protected in the commutation; for being communicated to connect with the second control panel of the second electric car; the fault message of the IGBT in the first full-bridge circuit, or the fault message of the IGBT by the bridge arm in the second control panel the second full-bridge circuit of acquisition are sent to the second control panel；The first full-bridge circuit being electrically connected with the first control panel, comprising: include the first bridge arm of the first IGBT and include the 2nd IGBT the second bridge arm；First control panel is also used to, and when determining that the first IGBT or the 2nd IGBT break down, the conducting bridge arm that in the first full-bridge circuit, there is the IGBT to break down is switched over the bridge arm not turned on.In this way, enabling the first electric car to the second electric car normal power supply, the problem of solving when the IGBT that bridge arm is connected in the first full-bridge circuit breaks down, charging can not be continued.
Description
Technical field
The present invention relates to electric vehicle engineering fields, particularly relate to a kind of commutation protection circuit of electric car, commutation is protected
Maintaining method and electric car.
Background technique
Electric car passes through its power battery having, and both can use power grid and has realized charging, and can also be used as one
Mobile power source is that other electric cars carry out charging or some other external electrical equipment such as housed device is powered.?
In the prior art, mutually filling for two electric cars may be implemented, i.e., be another by the power battery of a wherein electric car
Electric car charges, but in the prior art, when in the wherein full-bridge circuit of an electric car some or
Excess temperature or damage occur for certain insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBT)
Etc. failures when, electric car will directly terminate feed and charge.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of commutation of electric car protection circuit, commutation guard method and
Electric car is able to solve in the prior art, some in the full-bridge circuit of a certain electric car or certain IGBT hair
When raw failure, electric car directly terminates the problem of feeding and charging.
In a first aspect, the embodiment of the present invention provides a kind of commutation protection circuit of electric car, comprising:
First control panel, for being communicated to connect with the second control panel of the second electric car, to the second control panel
The fault message of the insulated gate bipolar transistor IGBT of the bridge arm in the first full-bridge circuit of the first electric car is sent, or
The fault message of the IGBT of the bridge arm in the second full-bridge circuit of the second electric car is obtained by the second control panel；
The first full-bridge circuit being electrically connected with the first control panel, comprising: include the first IGBT the first bridge arm and
It include the second bridge arm of the 2nd IGBT, the first bridge arm is in parallel with the second bridge arm；
First control panel is also used to, when determining that the first IGBT or the 2nd IGBT break down, by the first full-bridge electricity
Lu Zhong, the conducting bridge arm that there is the IGBT to break down are switched over the bridge arm not turned on.
Wherein, the first full-bridge circuit further include: the first inductance, the second inductance, third inductance, the 4th inductance, first capacitor
And second capacitor；
First inductance, the second inductance and the first IGBT series connection, third inductance, the 4th inductance and the 2nd IGBT series connection；
After first capacitor and the series connection of the second capacitor, one end is connected to the tie point of the first inductance and the second inductance, the other end
It is connected to the tie point of third inductance and the 4th inductance.
Wherein, the first full-bridge circuit further include: for realizing the first full-bridge circuit filtering third capacitor, third capacitor
Both ends connect the two poles of the earth of the first power battery of the first electric car respectively.
Wherein, the first full-bridge circuit further include: for realizing the relay of the first full-bridge circuit shutdown.
Second aspect, the embodiment of the present invention provide a kind of electric car, which is characterized in that protect electricity including above-mentioned commutation
Road.
The third aspect, the embodiment of the present invention provide a kind of commutation protection circuit of electric car, comprising:
Second control panel, for being communicated to connect with the first control panel of the first electric car, to the first control panel
The fault message of the insulated gate bipolar transistor IGBT of the bridge arm in the second full-bridge circuit of the second electric car is sent, or
The fault message of the IGBT of the bridge arm in the first full-bridge circuit of the first electric car is obtained by the first control panel；
The second full-bridge circuit being electrically connected with the second control panel, comprising: include the 3rd IGBT third bridge arm and
It include the four bridge legs of the 4th IGBT, third bridge arm is in parallel with four bridge legs；
Second control panel is also used to, in the first IGBT or the second bridge for determining the first bridge arm in the first full-bridge circuit
When 2nd IGBT of arm breaks down, the second full-bridge circuit of control is disconnected.
Fourth aspect, the embodiment of the present invention provide a kind of electric car, protect circuit including above-mentioned commutation.
5th aspect, the embodiment of the present invention provide a kind of commutation guard method of electric car, comprising:
The insulated gate bipolar that the bridge arm in the first full-bridge circuit of the first electric car is sent to the second control panel is brilliant
The fault message of body pipe IGBT；
When determining that the first IGBT or the 2nd IGBT break down, in the first full-bridge circuit, will exist and break down
The conducting bridge arm of IGBT is switched over the bridge arm not turned on.
Wherein, above-mentioned commutation guard method, further includes:
The failure letter of the IGBT of the bridge arm in the second full-bridge circuit of the second electric car is obtained by the second control panel
Breath.
Wherein, above-mentioned commutation guard method, further includes:
When determining that the IGBT of the bridge arm in the second full-bridge circuit breaks down, control relay shutdown.
6th aspect, the embodiment of the present invention provide a kind of commutation guard method of electric car, comprising:
The failure letter of the IGBT of the bridge arm in the first full-bridge circuit of the first electric car is obtained by the first control panel
Breath；
Event occurs in the 2nd IGBT for the first IGBT or the second bridge arm for determining the first bridge arm in the first full-bridge circuit
When barrier, the second full-bridge circuit of control is disconnected.
Wherein, above-mentioned commutation guard method, further includes:
The insulated gate bipolar that the bridge arm in the second full-bridge circuit of the second electric car is sent to the first control panel is brilliant
The fault message of body pipe IGBT.
In the embodiment of the present invention, using being used interchangeably for the IGBT on multiple bridge arms on the first full-bridge circuit, by first
The conducting bridge arm that there is the IGBT to break down in full-bridge circuit is switched over the bridge arm not turned on, and enables the first electric car
Enough to the second electric car normal power supply, solve as the IGBT in the first full-bridge circuit of the first electric car on conducting bridge arm
When breaking down, the problem of charging can not be continued.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 shows the circuit diagrams that the first electric car provided in an embodiment of the present invention is the charging of the second electric car；
Fig. 2 indicates the process signal of the commutation guard method provided in an embodiment of the present invention for being applied to the first electric car
Figure；
Fig. 3 indicates the process signal of the commutation guard method provided in an embodiment of the present invention for being applied to the second electric car
Figure.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
First embodiment
Referring to Figure 1, show the first electric car provided in an embodiment of the present invention for the charging of the second electric car
Circuit diagram, first embodiment of the invention provides a kind of commutation protection circuit of electric car, is applied to the first electronic vapour
Vehicle, commutation protection circuit may include:
First control panel 110, for being communicated to connect with the second control panel 210 of the second electric car, to the second control
Panel 210 processed sends the insulated gate bipolar transistor IGBT of the bridge arm in the first full-bridge circuit 120 of the first electric car
Fault message, or pass through the second control panel 210 and obtain bridge arm in second full-bridge circuit 220 of the second electric car
The fault message of IGBT；
The first full-bridge circuit 120 being electrically connected with the first control panel 110, comprising: include the first bridge of the first IGBT
Arm 121 and include the 2nd IGBT the second bridge arm 122, the first bridge arm 121 is in parallel with the second bridge arm 122；
First control panel 110 is also used to, when determining that the first IGBT or the 2nd IGBT break down, by the first full-bridge
In circuit 120, the conducting bridge arm that there is the IGBT to break down is switched over the bridge arm not turned on.
In above-described embodiment, the first electric car and the second electric car are provided with V2G (Vehicle to grid) function
Can, when charge by the first electric car to the second electric car, the in the first electric car the first full-bridge circuit 120 of conducting
First IGBT of one bridge arm 121 and the 2nd IGBT of the second bridge arm 122 makes the first power battery V1 of the first electric car
Second power battery V2 of the second electric car charges.Wherein, the first control panel 110 and second of the first electric car is electronic
The second control panel 210 communication connection of automobile, the first full-bridge circuit 120 of realization and the IGBT's in the second full-bridge circuit 220
Fault message interaction.When determining that the first IGBT be connected on the first full-bridge circuit 120 or the 2nd IGBT break down, utilize
The IGBT's on multiple bridge arms on first full-bridge circuit is used interchangeably, and the first control panel 110 is by the first full-bridge circuit 120
In, the conducting bridge arm that there is the IGBT to break down is switched over the bridge arm not turned on, and enables the first electric car to
Two electric car normal power supplies are solved when the IGBT be connected on bridge arm in the first full-bridge circuit 120 of the first electric car is sent out
When raw failure, the problem of charging can not be continued.In addition, in embodiments of the present invention, need to only be connected in the first full-bridge circuit 120
IGBT on first bridge arm 121 and the second bridge arm 122 can be realized the first electric car and charge to the second electric car, simplify
Circuit control.
Wherein, when the first full-bridge circuit 120 of the first electric car carries out the switching of failure bridge arm, the unexpected of power supply breaks
It opens and is connected and the charging device of the second electric car is caused to damage, correspondingly, the second control panel 210 can determine that first is complete
When the first IGBT of the first bridge arm 121 or the 2nd IGBT of the second bridge arm 122 in bridge circuit 120 break down, control the
Two full-bridge circuits 220 disconnect.
In addition, one it is specific implement in example, which can be three phase full bridge circuit, i.e., this
One full-bridge circuit 120 can also include the 5th bridge arm 123, the 5th bridge arm 123 and the first bridge arm 121 and the second bridge arm 122 simultaneously
Connection.Wherein, it should be noted that on first full-bridge circuit 120, there are two IGBT, the present invention for series connection on each bridge arm
In embodiment, it is that the second electric car fills that the first mentioned IGBT and the 2nd IGBT respectively referred to generation, which is in the first electric car,
When electric, the IGBT that is connected on the first bridge arm 121 and the second bridge arm 122.
In addition it is also necessary to explanation, in embodiments of the present invention, the fault message of IGBT may include IGBT excess temperature,
A variety of situations, the fault message such as damage or short circuit can be obtained by the prior art, and feed back to the first control panel 110
Or second control panel 210.
In addition, for the function of the first full-bridge circuit 120, in one embodiment, first full-bridge circuit 120 is better achieved
It can also include: the first inductance L1, the second inductance L2, third inductance L3, the 4th inductance L4, first capacitor C1 and the second capacitor
C2；
First inductance L1, the second inductance L2 and the first IGBT series connection, third inductance L3, the 4th inductance L4 and the 2nd IGBT string
Connection；
After first capacitor C1 and the second capacitor C2 series connection, one end is connected to the connection of the first inductance L1 and the second inductance L2
Point, the other end are connected to the tie point of third inductance L3 and the 4th inductance L4.
Further, in one embodiment, the first full-bridge circuit 120 can also include: for realizing the first full-bridge circuit
The third capacitor C3 of 120 filtering, the both ends of third capacitor C3 connect the two poles of the earth of the first power battery V1 of the first electric car respectively.
In addition, in one embodiment, the first full-bridge circuit 120 can also include: for realizing the first full-bridge circuit 120 pass
Disconnected relay (not shown).In this embodiment, when the first control panel 110 is obtained by the second control panel 210
To the fault message of the IGBT of the bridge arm in the second full-bridge circuit 220 of the second electric car, and determining the second full-bridge circuit
When the IGBT of bridge arm in 220 breaks down, the first control panel 110 controls relay shutdown, so that the first full-bridge circuit 120
It disconnects, the pause of the first electric car is that the second electric car charges, in this way, the bridge in the second full-bridge circuit 220 can be prevented
When the IGBT of arm breaks down, the first electric car continues power supply and causes electric shock accidents, so that it is guaranteed that charging safety.
In addition, the first control panel 110 can be also used for, as the first IGBT and the second bridge arm for determining the first bridge arm 121
When 122 the 2nd IGBT breaks down, control the first full-bridge circuit 120 shutdown, at this point, the first electric car terminates to second
The charging of electric car.
In addition, the embodiment of the present invention also provides a kind of electric car, which includes above-mentioned commutation protection circuit.
Since any of the above-described kind of commutation protection circuit has aforementioned techniques effect, there is commutation protection electricity
The electric car on road is also answered with the corresponding technical effect, and specific implementation process is similar to the above embodiments, does not repeat hereby.
The commutation protection circuit and electric car that first embodiment of the invention provides, including the first control panel and with the
First full-bridge circuit of one control panel electrical connection, the exchange using the IGBT on multiple bridge arms on the first full-bridge circuit make
With, the first control panel by the conducting bridge arm that in the first full-bridge circuit, there is the IGBT to break down and the bridge arm that does not turn on into
Row switching, enables the first electric car to the second electric car normal power supply, solves first complete when the first electric car
When IGBT in bridge circuit on conducting bridge arm breaks down, the problem of charging can not be continued.
Second embodiment
Referring to Figure 1, second embodiment of the invention provides a kind of commutation protection circuit of electric car, is applied to the second electricity
Electrical automobile, commutation protection circuit may include:
Second control panel 210, for being communicated to connect with the first control panel 110 of the first electric car, to the first control
Panel 110 processed sends the insulated gate bipolar transistor IGBT of the bridge arm in the second full-bridge circuit 220 of the second electric car
Fault message, or pass through the first control panel 110 and obtain bridge arm in first full-bridge circuit 120 of the first electric car
The fault message of IGBT；
The second full-bridge circuit 220 being electrically connected with the second control panel 210, comprising: include the third bridge of the 3rd IGBT
Arm 221 and include the 4th IGBT four bridge legs 222, third bridge arm 221 is in parallel with four bridge legs 222；
Second control panel 210 is also used to, in the first IGBT for determining the first bridge arm 121 in the first full-bridge circuit 120
Or second the 2nd IGBT of bridge arm 122 when breaking down, the second full-bridge circuit 220 of control disconnects.
In above-described embodiment, the first electric car and the second electric car are provided with V2G function, when the first electric car is
Second electric car charge when, the second electric car be connected the second full-bridge circuit 220 in third bridge arm 221 the 3rd IGBT and
4th IGBT of four bridge legs 222, so that the second power battery V2 of the second electric car receives the first of the first electric car
The power supply of power battery V1 output.Wherein, the second control panel 210 is communicated with the first control panel 110 of the first electric car
The second full-bridge circuit 220 and the fault message interaction of the IGBT in the first full-bridge circuit are realized in connection.When the second control panel
The failure of the IGBT of bridge arm in first full-bridge circuit 120 of 210 the first electric cars obtained by the first control panel 110
Information, and the 2nd IGBT of the first IGBT of the first bridge arm 121 in determining first full-bridge circuit 120 or the second bridge arm 122
When breaking down, the second full-bridge circuit 220 of control is disconnected, to prevent when the first full-bridge circuit 120 carries out bridge arm switching, power supply
Unexpected disconnection and conducting cause the charging device on the second electric car to damage, and then can ensure that the first electric car can
To the second electric car normal power supply, to solve as the IGBT in the first full-bridge circuit of the first electric car on conducting bridge arm
When breaking down, the problem of charging can not be continued.In addition, in embodiments of the present invention, need to only be connected in the second full-bridge circuit 220
Third bridge arm 221 and four bridge legs 222 on IGBT, the first electric car can be realized and charge to the second electric car, letter
Circuit control is changed.
Wherein, specifically, the second control panel 210 controls the mode that the second full-bridge circuit 220 disconnects to be, by the
The control power output of 3rd IGBT of third bridge arm 221 and the 4th IGBT of four bridge legs 222 is by two control panels 210
0, i.e. the second control panel 210 carries out 0 power control to the second full-bridge circuit 220, so that the second full-bridge circuit 220 disconnects.When
So, when the second full-bridge circuit includes the relay for realizing the shutdown of the second full-bridge circuit 220, the second control can be passed through
Panel 210 controls the relay and disconnects, and realizes the shutdown of the second full-bridge circuit.
Wherein, one it is specific implement in example, which can be three phase full bridge circuit, then this
Two full-bridge circuits 220 can also include the 6th bridge arm 223, and the 6th bridge arm 223 and third bridge arm 221 and four bridge legs 222 are simultaneously
Connection.It should be noted that there are two IGBT, the embodiment of the present invention for series connection on each bridge arm on second full-bridge circuit 220
In, what the 3rd mentioned IGBT and the 4th IGBT respectively referred to generation be when the first electric car is the charging of the second electric car,
The IGBT be connected on third bridge arm 221 and four bridge legs 222.
It should also be noted that, in embodiments of the present invention, the fault message of IGBT may include IGBT excess temperature, damage or
A variety of situations such as person's short circuit, the fault message can be obtained by the prior art, and feed back to the first control panel 110 or
Two control panels 210.
In addition, for the function of the second full-bridge circuit 220, in one embodiment, second full-bridge circuit 220 is better achieved
It can also include the 5th inductance L5, the 6th inductance L6, the 7th inductance L7, the 8th inductance L8, the 4th capacitor C4 and the 5th capacitor
C5；
5th inductance L5, the 6th inductance L6 and the 3rd IGBT series connection, the 7th inductance L7, the 8th inductance L8 and the 4th IGBT string
Connection；
After 4th capacitor C4 and the 5th capacitor C5 series connection, one end is connected to the connection of the 5th inductance L5 and the 6th inductance L6
Point, the other end are connected to the tie point of the 7th inductance L7 and the 8th inductance L8.
Second full-bridge circuit 220 can also include: the 6th capacitor C6 for realizing the filtering of the second full-bridge circuit 220, the
The both ends of six capacitor C6 connect the two poles of the earth of the second power battery V2 of the second electric car respectively.
In addition, the embodiment of the present invention also provides a kind of electric car, circuit is protected including above-mentioned commutation.
Since any of the above-described kind of commutation protection circuit has aforementioned techniques effect, there is commutation protection electricity
The electric car on road is also answered with the corresponding technical effect, and specific implementation process is similar to the above embodiments, does not repeat hereby.
The commutation protection circuit and electric car that second embodiment of the invention provides, including the second control panel and with the
Second full-bridge circuit of two control panels electrical connection is sent out by the IGBT of bridge arm of second control panel in the first full-bridge circuit
When raw failure, the second full-bridge circuit of control is disconnected, and to prevent when the first full-bridge circuit carries out bridge arm switching, the unexpected of power supply breaks
It opens and is connected and the charging device on the second electric car is caused to damage, and then can ensure that the first electric car can be to the second electricity
Electrical automobile normal power supply, to solve to break down as the IGBT in the first full-bridge circuit of the first electric car on conducting bridge arm
When, the problem of charging can not be continued.
3rd embodiment
Fig. 2 is referred to, shows the commutation protection side provided in an embodiment of the present invention for being applied to the first electric car
The flow diagram of method, third embodiment of the invention provide a kind of commutation guard method of electric car, and it is electronic to be applied to first
Automobile, the commutation guard method may comprise steps of:
Step S201 sends the insulated gate of the bridge arm in the first full-bridge circuit of the first electric car to the second control panel
The fault message of bipolar transistor IGBT；
, by the first full-bridge circuit, there is hair when determining that the first IGBT or the 2nd IGBT break down in step S202
The conducting bridge arm of the IGBT of raw failure is switched over the bridge arm not turned on.
In above-described embodiment, the first electric car and the second electric car are provided with V2G function, when pass through the first electronic vapour
When vehicle charges to the second electric car, the first IGBT of the first bridge arm and the in the first full-bridge circuit is connected in the first electric car
2nd IGBT of two bridge arms fills the second power battery of first the second electric car of power battery of the first electric car
Electricity.Wherein, the second control panel of the first control panel of the first electric car and the second electric car communicates to connect, and realizes the
The interaction of the fault message of one full-bridge circuit and the IGBT in the second full-bridge circuit.When of the first bridge arm in the first full-bridge circuit
2nd IGBT of one IGBT or the second bridge arm breaks down, and corresponding fault message is fed back to the first control panel, and first
Fault message is sent to the second control panel by control panel, so that the second control panel carries out corresponding control according to the fault message
System operation；Meanwhile first control panel by the conducting bridge arm that in the first full-bridge circuit, there is the IGBT to break down with do not turn on
Bridge arm switch over, enable the first electric car to the second electric car normal power supply, solve when the first electric car
The first full-bridge circuit in the problem of IGBT on bridge arm is connected when breaking down, charging can not be continued.
Wherein, in one embodiment, above-mentioned commutation guard method, can with the following steps are included:
The failure letter of the IGBT of the bridge arm in the second full-bridge circuit of the second electric car is obtained by the second control panel
Breath.
Further, in one embodiment, above-mentioned commutation guard method, can with the following steps are included:
When determining that the IGBT of the bridge arm in the second full-bridge circuit breaks down, control relay shutdown.
Here, the IGBT hair of the bridge arm in the second full-bridge circuit is got by the second control panel in the first control panel
When raw failure, turned off by control relay so that the shutdown of the first full-bridge circuit, prevents from causing electric shock accidents, it is ensured that charging peace
Entirely.
The commutation guard method that third embodiment of the invention provides, by multiple bridge arms on the first full-bridge circuit of control
IGBT be used interchangeably, by the conducting bridge arm that there is the IGBT to break down in the first full-bridge circuit and the bridge arm not turned on into
Row switching, enables the first electric car to the second electric car normal power supply, solves first complete when the first electric car
When IGBT in bridge circuit on conducting bridge arm breaks down, the problem of charging can not be continued.
Fourth embodiment
Fig. 3 is referred to, shows the commutation protection side provided in an embodiment of the present invention for being applied to the second electric car
The flow diagram of method, fourth embodiment of the invention provide a kind of commutation guard method of electric car, and it is electronic to be applied to second
Automobile, the commutation guard method may comprise steps of:
Step S301 obtains the IGBT of the bridge arm in the first full-bridge circuit of the first electric car by the first control panel
Fault message；
Step S302, the second of the first IGBT or the second bridge arm that determine the first bridge arm in the first full-bridge circuit
When IGBT breaks down, the second full-bridge circuit of control is disconnected.
In above-described embodiment, the first electric car and the second electric car are provided with V2G function, when the first electric car is
When second electric car charges, the 3rd IGBT and the 4th bridge of third bridge arm in the second full-bridge circuit is connected in the second electric car
4th IGBT of arm, so that the second power battery of the second electric car receives the first power battery output of the first electric car
Power supply.Wherein, the first control panel of the second control panel and the first electric car communicates to connect, and realizes the second full-bridge circuit
With the fault message interaction of the IGBT in the first full-bridge circuit.Second control panel is electronic by the acquisition first of the first control panel
The fault message of the IGBT of bridge arm in first full-bridge circuit of automobile is determining of the first bridge arm in the first full-bridge circuit
When 2nd IGBT of one IGBT or the second bridge arm breaks down, the second full-bridge circuit of control is disconnected, to prevent in the first full-bridge
When circuit carries out bridge arm switching, the unexpected disconnection and conducting of power supply cause the charging device on the second electric car to damage, in turn
It can ensure that the first electric car can be to the second electric car normal power supply, so that solve to work as the first electric car first is complete
When IGBT in bridge circuit on conducting bridge arm breaks down, the problem of charging can not be continued.
Wherein, in one embodiment, above-mentioned commutation guard method, can with the following steps are included:
The insulated gate bipolar that the bridge arm in the second full-bridge circuit of the second electric car is sent to the first control panel is brilliant
The fault message of body pipe IGBT.
Here, when the IGBT of the bridge arm in the second full-bridge circuit breaks down, the second control panel is by corresponding failure
Information is sent to the first control panel, so that the control relay shutdown of the first control panel turns off the first full-bridge circuit, prevents
Cause electric shock accidents, it is ensured that charging safety.
The commutation guard method that fourth embodiment of the invention provides is sent out by the IGBT of the bridge arm in the first full-bridge circuit
When raw failure, the second full-bridge circuit of control is disconnected, and to prevent when the first full-bridge circuit carries out bridge arm switching, the unexpected of power supply breaks
It opens and is connected and the charging device on the second electric car is caused to damage, and then can ensure that the first electric car can be to the second electricity
Electrical automobile normal power supply, to solve to break down as the IGBT in the first full-bridge circuit of the first electric car on conducting bridge arm
When, the problem of charging can not be continued.
For the aforementioned method embodiment, for simple description, therefore, it is stated as a series of action combinations, still
Those skilled in the art should understand that the present invention is not limited by the sequence of acts described, because according to the present invention, it is certain
Step can be performed in other orders or simultaneously.Secondly, those skilled in the art should also know that, it is described in the specification
Embodiment belong to preferred embodiment, related movement is not necessarily essential to the invention.
It should be noted that in inventive embodiments, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (12)
1. circuit is protected in a kind of commutation of electric car characterized by comprising
First control panel, for being communicated to connect with the second control panel of the second electric car, to second control panel
The fault message of the insulated gate bipolar transistor IGBT of the bridge arm in the first full-bridge circuit of the first electric car is sent, or
The failure letter of the IGBT of the bridge arm in the second full-bridge circuit of second electric car is obtained by second control panel
Breath；
The first full-bridge circuit being electrically connected with first control panel, comprising: include the first IGBT the first bridge arm and
It include the second bridge arm of the 2nd IGBT, first bridge arm is in parallel with second bridge arm；
First control panel is also used to, when determining that the first IGBT or the 2nd IGBT break down, by institute
It states in the first full-bridge circuit, the conducting bridge arm that there is the IGBT to break down is switched over the bridge arm not turned on；
Wherein, the first power battery of the first electric car connects the DC side of the first full-bridge circuit, the friendship of the first full-bridge electric current
The exchange side that side connects the second full-bridge circuit is flowed, the DC side of the second full-bridge circuit connects the second power electric of the second electric car
Pond.
2. circuit is protected in commutation according to claim 1, which is characterized in that first full-bridge circuit further include: first
Inductance, the second inductance, third inductance, the 4th inductance, first capacitor and the second capacitor；
First inductance, second inductance and the first IGBT series connection, the third inductance, the 4th inductance and institute
State the 2nd IGBT series connection；
After the first capacitor and second capacitor series connection, one end is connected to the company of first inductance and second inductance
Contact, the other end are connected to the tie point of the third inductance and the 4th inductance.
3. circuit is protected in commutation according to claim 1, which is characterized in that first full-bridge circuit further include: be used for
Realize the third capacitor of the first full-bridge circuit filtering, the both ends of the third capacitor connect first electric car respectively
The two poles of the earth of first power battery.
4. circuit is protected in commutation according to claim 1, which is characterized in that first full-bridge circuit further include: be used for
Realize the relay of the first full-bridge circuit shutdown.
5. a kind of electric car, which is characterized in that protect circuit including the described in any item commutations of such as Claims 1-4.
6. circuit is protected in a kind of commutation of electric car characterized by comprising
Second control panel, for being communicated to connect with the first control panel of the first electric car, to first control panel
The fault message of the insulated gate bipolar transistor IGBT of the bridge arm in the second full-bridge circuit of the second electric car is sent, or
The failure letter of the IGBT of the bridge arm in the first full-bridge circuit of first electric car is obtained by first control panel
Breath；
The second full-bridge circuit being electrically connected with second control panel, comprising: include the 3rd IGBT third bridge arm and
It include the four bridge legs of the 4th IGBT, the third bridge arm is in parallel with the four bridge legs；
Second control panel is also used to, in the first IGBT or the second bridge for determining the first bridge arm in the first full-bridge circuit
When 2nd IGBT of arm breaks down, controls second full-bridge circuit and disconnect；
Wherein, the first power battery of the first electric car connects the DC side of the first full-bridge circuit, the friendship of the first full-bridge electric current
The exchange side that side connects the second full-bridge circuit is flowed, the DC side of the second full-bridge circuit connects the second power electric of the second electric car
Pond.
7. a kind of electric car, which is characterized in that protect circuit including commutation as claimed in claim 6.
8. a kind of commutation guard method of electric car characterized by comprising
The insulated gate bipolar transistor of the bridge arm in the first full-bridge circuit of the first electric car is sent to the second control panel
The fault message of IGBT；
When determining that the first IGBT or the 2nd IGBT break down, in first full-bridge circuit, will exist and break down
The conducting bridge arm of IGBT is switched over the bridge arm not turned on；
Wherein, the first electric car has the first control panel, the first power battery and the first full-bridge circuit, the second electric car
With the second control panel, the second power battery and the second full-bridge circuit, the first control panel connects the first full-bridge circuit and the
Two control panels, the second control panel connect the second full-bridge circuit, and the first power battery connects the DC side of the first full-bridge circuit,
The exchange side of first full-bridge electric current connects the exchange side of the second full-bridge circuit, and the DC side of the second full-bridge circuit connects the second power
Battery.
9. commutation guard method according to claim 8, which is characterized in that further include:
The failure letter of the IGBT of the bridge arm in the second full-bridge circuit of the second electric car is obtained by second control panel
Breath.
10. commutation guard method according to claim 9, which is characterized in that further include:
When determining that the IGBT of the bridge arm in second full-bridge circuit breaks down, control relay shutdown.
11. a kind of commutation guard method of electric car characterized by comprising
The fault message of the IGBT of the bridge arm in the first full-bridge circuit of the first electric car is obtained by the first control panel；
Event occurs in the 2nd IGBT for the first IGBT or the second bridge arm for determining the first bridge arm in first full-bridge circuit
When barrier, the second full-bridge circuit of control is disconnected；
Wherein, the first electric car has the first control panel, the first power battery and the first full-bridge circuit, the second electric car
With the second control panel, the second power battery and the second full-bridge circuit, the first control panel connects the first full-bridge circuit and the
Two control panels, the second control panel connect the second full-bridge circuit, and the first power battery connects the DC side of the first full-bridge circuit,
The exchange side of first full-bridge electric current connects the exchange side of the second full-bridge circuit, and the DC side of the second full-bridge circuit connects the second power
Battery.
12. commutation guard method according to claim 11, which is characterized in that further include:
The insulated gate bipolar that the bridge arm in the second full-bridge circuit of the second electric car is sent to first control panel is brilliant
The fault message of body pipe IGBT.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145877.3A CN106712222B (en) | 2017-03-13 | 2017-03-13 | A kind of commutation protection circuit, commutation guard method and the electric car of electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145877.3A CN106712222B (en) | 2017-03-13 | 2017-03-13 | A kind of commutation protection circuit, commutation guard method and the electric car of electric car |
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| Publication Number | Publication Date |
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| CN106712222A CN106712222A (en) | 2017-05-24 |
| CN106712222B true CN106712222B (en) | 2019-02-01 |
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| CN201710145877.3A Active CN106712222B (en) | 2017-03-13 | 2017-03-13 | A kind of commutation protection circuit, commutation guard method and the electric car of electric car |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888908A (en) * | 1994-09-14 | 1996-04-02 | Hitachi Ltd | Charger for electric railcar |
| CN202455253U (en) * | 2012-01-06 | 2012-09-26 | 浙江大学 | Bridge arm switching multi-level current converter |
| CN103973191A (en) * | 2014-04-09 | 2014-08-06 | 东南大学 | Default phase fault-tolerant control method of nine-phase flux-switching permanent magnetic motor |
| CN105281581A (en) * | 2015-10-23 | 2016-01-27 | 南京航空航天大学 | Inverter-stage fault tolerant control method of full bidirectional switch-type two-stage matrix converter |
-
2017
- 2017-03-13 CN CN201710145877.3A patent/CN106712222B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888908A (en) * | 1994-09-14 | 1996-04-02 | Hitachi Ltd | Charger for electric railcar |
| CN202455253U (en) * | 2012-01-06 | 2012-09-26 | 浙江大学 | Bridge arm switching multi-level current converter |
| CN103973191A (en) * | 2014-04-09 | 2014-08-06 | 东南大学 | Default phase fault-tolerant control method of nine-phase flux-switching permanent magnetic motor |
| CN105281581A (en) * | 2015-10-23 | 2016-01-27 | 南京航空航天大学 | Inverter-stage fault tolerant control method of full bidirectional switch-type two-stage matrix converter |
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| CN106712222A (en) | 2017-05-24 |
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