CN209562231U - The control device and vehicle-used inverter of vehicle-used inverter - Google Patents
The control device and vehicle-used inverter of vehicle-used inverter Download PDFInfo
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- CN209562231U CN209562231U CN201920228096.5U CN201920228096U CN209562231U CN 209562231 U CN209562231 U CN 209562231U CN 201920228096 U CN201920228096 U CN 201920228096U CN 209562231 U CN209562231 U CN 209562231U
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- 230000009466 transformation Effects 0.000 claims abstract description 15
- 239000004065 semiconductor Substances 0.000 claims description 39
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- 230000033228 biological regulation Effects 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 206010037660 Pyrexia Diseases 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The utility model provides the control device and vehicle-used inverter of a kind of vehicle-used inverter, is related to the technical field of inverter, including sequentially connected voltage transformation module, active discharge module, main control chip and backup power source logic module；Voltage transformation module, for busbar voltage to be converted to specified power supply voltage；Main control chip is sent to active discharge module for receiving active discharge instruction, and by active discharge instruction；Active discharge module, for being released according to active discharge instruction to specified power supply voltage；Backup power source logic module is used for when main power voltage is less than reference voltage, by specified power supply voltage transmission to inverter low-voltage power circuit.The reliability and thermal diffusivity of vehicle-used inverter can be improved in the utility model, reduces cost and failure rate.
Description
Technical field
The utility model relates to the technical fields of inverter, more particularly, to the control device and vehicle of a kind of vehicle-used inverter
Use inverter.
Background technique
Inverter for electric vehicle, i.e. driving motor for electric automobile controller, direct-flow input end connect power battery
High pressure needs large capacity Support Capacitor to stablize busbar voltage.After vehicle stops working, inverter power-off, bus Support Capacitor is still
There are high pressure and energy residuals, needs to take passive electric discharge or active discharge measure, capacitor residual amount of energy is released.Active release
Bus capacitor voltage can be dropped to safe range in a short time by power technology, prevent the generation of high-voltage safety failure.Standby electricity
Source is a kind of Redundancy Design, it is intended to improve electric machine controller reliability of operation；When battery or DCDC work break down,
It can not be inverter low-tension supply normal power supply, at this moment backup power source is cut, and electric machine controller can be made to continue working.
There are three types of common active discharge modes.The first is to open shutdown by control IGBT bridge arm, make motor around
Group galvanization consumes capacitive energy in a manner of resistance state fever.The method is more demanding to controlling, and motor is easily caused to delay work
The problems such as work, vehicle is shaken.Second is that power resistor is connected with switch, is then connected in parallel on capacitor bus both ends, passes through control
Switch-mode regulation duty ratio consumes capacitor dump energy so that resistance works in certain power bracket.The method is the disadvantage is that resistance
Fever is serious, and heat dissipation problem is not easily solved, and reliability is not high.The third is using single-phase or multiphase IGBT bridge arm direct pass
Mode, usually upper bridge is straight-through, and lower bridge switchs in short-term, and bus capacitor energy is consumed by the parasitic capacitance charge and discharge of IGBT.
The method without increasing hardware circuit, but will lead to lower bridge IGBT be subjected to biggish electric current and excessive voltage change ratio and
Current changing rate, IGBT wafer are easy to damage.
Utility model content
In view of this, can be improved automobile-used inverse the purpose of this utility model is to provide the control device of vehicle-used inverter
The reliability and thermal diffusivity for becoming device, reduce cost and failure rate.
In a first aspect, the utility model embodiment provides a kind of control device of vehicle-used inverter, wherein
Including sequentially connected voltage transformation module, active discharge module, main control chip and backup power source logic module；
The voltage transformation module, for busbar voltage to be converted to specified power supply voltage；
The main control chip for receiving the Rule of judgment of active discharge, and sends active discharge instruction to active discharge
Module；
The active discharge module, for being released according to active discharge instruction to the specified power supply voltage；
The backup power source logic module is used for when main power voltage is less than reference voltage, by the specified power supply electricity
Pressure is transmitted to inverter low-voltage power circuit.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In,
The voltage transformation module include: positive and negative anodes input terminal, common mode inductance T1, transformer T2, power supply control chip U1,
Power supply controls metal-oxide-semiconductor Q1, counnter attack diode D1, filter inductance L1 and electric capacity of voltage regulation C1；
The positive and negative anodes input terminal inputs the busbar voltage, anode and the common mode inductance of the positive and negative anodes input terminal
Primary one end of T1 is connected, and the cathode of the positive and negative anodes input terminal is connected with secondary one end of the common mode inductance T1, described total
The primary other end of mould inductance T1 is connected with primary one end of the transformer T2, another termination of secondary of the common mode inductance T1
The primary other end on ground, the transformer T2 is connected with the drain electrode of power supply control metal-oxide-semiconductor Q1, the secondary of the transformer T2
One end is connected with the anode of the counnter attack diode D1, and the secondary other end ground connection of the transformer T2, the power supply controls MOS
The grid of pipe Q1 is connected with the power supply control chip U1, the source electrode ground connection of the power supply control metal-oxide-semiconductor Q1, two pole of counnter attack
The cathode of pipe D1 is connected with one end of the filter inductance L1, the other end of the filter inductance L1 and the electric capacity of voltage regulation C1
Anode be connected, the cathode of electric capacity of voltage regulation C1 ground connection.
With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect,
In, the power supply control chip U1 controls the electric capacity of voltage regulation C1 output specified power supply voltage by adjusting duty ratio.
With reference to first aspect, the utility model embodiment provides the third possible embodiment of first aspect,
In, the active discharge module include release control chip U2, releasing controls MOS pipe Q2, bleeder resistance matrix；
Described release controls chip U2 and controls the grid of metal-oxide-semiconductor Q2 with described release and be connected, and described release controls metal-oxide-semiconductor Q2
Drain electrode be connected with the anode of the electric capacity of voltage regulation C1, it is described release control metal-oxide-semiconductor Q2 source electrode and the bleeder resistance matrix
One end be connected, the other end of bleeder resistance matrix ground connection.
With reference to first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect,
In, described release controls chip U2 by adjusting duty ratio output discharge control signal.
With reference to first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect,
In, the bleeder resistance matrix includes the resistance of multiple series and parallel structures, and the resistance is identical.
With reference to first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect,
In, the backup power source logic module includes Backup Power Switch metal-oxide-semiconductor Q3, backup power source control logic circuit, comparator U3
With power supply sample circuit；
The drain electrode of the Backup Power Switch metal-oxide-semiconductor Q3 is connected with the anode of the electric capacity of voltage regulation C1, the backup power source
The grid of switch metal-oxide-semiconductor Q3 is connected with one end of the backup power source control logic circuit, the Backup Power Switch metal-oxide-semiconductor Q3
Source electrode be connected with the power circuit, the first of the other end of the backup power source control logic circuit and the comparator U3
End be connected, one end of the power supply sample circuit is connected with the second end of the comparator U3, the power supply sample circuit it is another
One end is connected with the power circuit, and the third of the comparator U3 is terminated into the reference voltage.
With reference to first aspect, the utility model embodiment provides the 7th kind of possible embodiment of first aspect,
In, the power supply sample circuit, for acquiring the main power voltage；
The comparator U3 exports comparison result for the main power voltage and the reference voltage to be compared；
The backup power source control logic circuit, for being that the main power voltage is less than the base in the comparison result
In the case where quasi- voltage, issues backup power source and control signal；
The Backup Power Switch metal-oxide-semiconductor Q3, for controlling signal closure switch according to the backup power source, to described inverse
Become device low-voltage power circuit and exports the specified power supply voltage.
With reference to first aspect, the utility model embodiment provides the 8th kind of possible embodiment of first aspect,
In, the specified power supply voltage is+12V.
Second aspect, the utility model embodiment also provide a kind of vehicle-used inverter, including vehicle described in above-described embodiment
It further include the bus capacitor being connected with the control device of the vehicle-used inverter with the control device of inverter；
The bus capacitor, for the control device inlet highway voltage to the vehicle-used inverter.
The utility model embodiment bring it is following the utility model has the advantages that
The control device and vehicle-used inverter of a kind of vehicle-used inverter provided by the utility model, including sequentially connected electricity
Press conversion module, active discharge module, main control chip and backup power source logic module；Voltage transformation module, for bus is electric
Pressure is converted to specified power supply voltage；Main control chip is sent to actively for receiving active discharge instruction, and by active discharge instruction
Discharge module；Active discharge module, for being released according to active discharge instruction to specified power supply voltage；Backup power source logic
Module is used for when main power voltage is less than reference voltage, by specified power supply voltage transmission to inverter low-voltage power circuit.This
The reliability and thermal diffusivity of vehicle-used inverter can be improved in utility model, reduces cost and failure rate.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the control device schematic diagram for the vehicle-used inverter that the utility model embodiment one provides；
Fig. 2 is the control device circuit diagram for the vehicle-used inverter that the utility model embodiment one provides.
Icon:
100- voltage transformation module；200- active discharge module；300- main control chip；400- backup power source logic module.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.
Current inverter for electric vehicle, i.e. driving motor for electric automobile controller, direct-flow input end connect power electric
The high pressure in pond needs large capacity Support Capacitor to stablize busbar voltage.After vehicle stops working, inverter power-off, bus support electricity
Hold there are still high pressure and energy residuals, needs to take passive electric discharge or active discharge measure, capacitor residual amount of energy is released.It is main
Bus capacitor voltage can be dropped to safe range in a short time by dynamic discharge technology, prevent the generation of high-voltage safety failure.It is standby
It is a kind of Redundancy Design with power supply, it is intended to improve electric machine controller reliability of operation；There is event in battery or DCDC work
It can not be inverter low-tension supply normal power supply when barrier, at this moment backup power source is cut, and electric machine controller can be made to continue working.
There are three types of common active discharge modes.The first is to open shutdown by control IGBT bridge arm, make motor around
Group galvanization consumes capacitive energy in a manner of resistance state fever.The method is more demanding to controlling, and motor is easily caused to delay work
The problems such as work, vehicle is shaken.Second is that power resistor is connected with switch, is then connected in parallel on capacitor bus both ends, passes through control
Switch-mode regulation duty ratio consumes capacitor dump energy so that resistance works in certain power bracket.The method is the disadvantage is that resistance
Fever is serious, and heat dissipation problem is not easily solved, and reliability is not high.The third is using single-phase or multiphase IGBT bridge arm direct pass
Mode, usually upper bridge is straight-through, and lower bridge switchs in short-term, and bus capacitor energy is consumed by the parasitic capacitance charge and discharge of IGBT.
The method without increasing hardware circuit, but will lead to lower bridge IGBT be subjected to biggish electric current and excessive voltage change ratio and
Current changing rate, IGBT wafer are easy to damage.
Based on this, the control device and vehicle-used inverter of vehicle-used inverter provided by the embodiment of the utility model, Ke Yiti
The reliability and thermal diffusivity of high vehicle-used inverter, reduce cost and failure rate.
For convenient for understanding the present embodiment, first to a kind of vehicle-used inverter disclosed in the utility model embodiment
Control device describe in detail.
Embodiment one:
Fig. 1 is a kind of control device schematic diagram for vehicle-used inverter that the utility model embodiment one provides.
Referring to Fig.1, the control device of vehicle-used inverter mainly includes sequentially connected voltage transformation module 100, active release
Electric module 200, main control chip 300 and backup power source logic module 400.
Voltage transformation module 100, for busbar voltage to be converted to specified power supply voltage.
Wherein, the specified power supply voltage of the present embodiment can be+12V.
Further, referring to the circuit diagram of Fig. 2, voltage transformation module 100 includes: positive and negative anodes input terminal, common mode electricity
Feel T1, transformer T2, power supply control chip U1, power supply control metal-oxide-semiconductor Q1, counnter attack diode D1, filter inductance L1 and pressure stabilizing electricity
Hold C1.
Positive and negative anodes input terminal inlet highway voltage, primary one end phase of the anode and common mode inductance T1 of positive and negative anodes input terminal
Even, the cathode of positive and negative anodes input terminal is connected with secondary one end of the common mode inductance T1, the primary other end of common mode inductance T1 and
Primary one end of transformer T2 is connected, the secondary other end ground connection of common mode inductance T1, the primary other end and power supply of transformer T2
The drain electrode for controlling metal-oxide-semiconductor Q1 is connected, and secondary one end of transformer T2 is connected with the anode of counnter attack diode D1, time of transformer T2
The grid of grade other end ground connection, power supply control metal-oxide-semiconductor Q1 is connected with power supply control chip U1, and power supply controls the source electrode of metal-oxide-semiconductor Q1
Ground connection, the cathode of counnter attack diode D1 are connected with one end of filter inductance L1, the other end and electric capacity of voltage regulation C1 of filter inductance L1
Anode be connected, the cathode of electric capacity of voltage regulation C1 ground connection.
Further, power supply control chip U1 controls the electric capacity of voltage regulation C1 output specified electricity by adjusting duty ratio
Source voltage.
Specifically, duty ratio is adjusted in power supply control chip U1 after receiving active discharge instruction, power supply controls metal-oxide-semiconductor
Q1 carries out opening shutdown realization transformation according to duty ratio, and wherein for D1 for preventing voltage reversely charging, L1 is used for pair+12V voltage filter,
C1 is used for pair+12V voltage pressure stabilizing.
Main control chip 300 is sent to active discharge for receiving the Rule of judgment of active discharge, and by active discharge instruction
Module 200.
Specifically, main control chip 300 receives the active discharge instruction that inverter is sent after inverter disconnects high pressure, it will
Active discharge instruction, which is transferred to actively to release, controls chip U2 and power supply control chip U1, further according to power supply sample circuit feedback
Active discharge instruction is transferred to backup power source control logic circuit in the case where needing to open Backup Power Switch by information.
Active discharge module 200, for being released according to active discharge instruction to specified power supply voltage.
Further, active discharge module 200 include release control chip U2, releasing controls MOS pipe Q2, bleeder resistance
Matrix.
It releases and controls chip U2 and be connected with the grid for controlling metal-oxide-semiconductor Q2 of releasing, release and control the drain electrode of MOS pipe Q2 and steady
The anode of voltage capacitance C1 is connected, and releasing controls the source electrode of metal-oxide-semiconductor Q2 and be connected with one end of bleeder resistance matrix, bleeder resistance matrix
The other end ground connection.
Further, it releases and controls chip U2 by adjusting duty ratio output discharge control signal.
Bleeder resistance matrix includes the resistance of multiple series and parallel structures, and resistance is identical.
Duty ratio is adjusted after receiving active discharge instruction specifically, releasing and controlling chip U2, releases and controls metal-oxide-semiconductor
Q2 open shutdown according to discharge control signal to control the power actively released, and finally applies the voltage to bleeder resistance square
Battle array both ends, wherein the resistance value of bleeder resistance matrix and power grade are determined according to time and power is released.
Above-mentioned bleeder resistance matrix can use 16 resistance values for 10-20 ohm, the resistance that power is 1 watt.In reality
In, the bleeder resistance matrix of other forms can also be used, is not limited herein.
Backup power source logic module 400 is used for when main power voltage is less than reference voltage, by specified power supply voltage transmission
To inverter low-voltage power circuit.
Further, backup power source logic module 400 includes Backup Power Switch metal-oxide-semiconductor Q3, backup power source control logic
Circuit, comparator U3 and power supply sample circuit.
The drain electrode of Backup Power Switch metal-oxide-semiconductor Q3 is connected with the anode of electric capacity of voltage regulation C1, Backup Power Switch metal-oxide-semiconductor Q3's
Grid is connected with one end of backup power source control logic circuit, and the source electrode of Backup Power Switch metal-oxide-semiconductor Q3 is connected with power circuit,
The other end of backup power source control logic circuit is connected with the first end of comparator U3, one end of power supply sample circuit and comparator
The second end of U3 is connected, and the other end of power supply sample circuit is connected with power circuit, and the third of comparator U3 is terminated into benchmark electricity
Pressure.
Further, power supply sample circuit, for acquiring main power voltage；Comparator U3, for by main power voltage and
Reference voltage is compared, and exports comparison result；Backup power source control logic circuit, for being main power voltage in comparison result
In the case where reference voltage, issues backup power source and control signal；Backup Power Switch metal-oxide-semiconductor Q3, for according to standby electricity
Source controls signal closure switch, exports specified power supply voltage to inverter low-voltage power circuit.
Specifically, power supply sample circuit acquisition main power voltage and be sent to comparator U3, comparator U3 is by comparison result
It is sent to backup power source control logic circuit, when main power voltage is less than reference voltage, is considered as inverter low-voltage power circuit
It can not work normally, and send backup power source to Backup Power Switch metal-oxide-semiconductor Q3 and control signal, Backup Power Switch metal-oxide-semiconductor Q3
Closure switch provide specified power supply voltage, so that inverter continues to work normally.
Embodiment two:
The control device of provided vehicle-used inverter, the present embodiment additionally provide vehicle-used inverter based on the above embodiment
Device mainly includes the control device of above-mentioned vehicle-used inverter, further includes being connected with the control device of vehicle-used inverter
Bus capacitor.
Bus capacitor, for the control device inlet highway voltage to vehicle-used inverter.
Specifically, the anode of bus capacitor is connected with the anode of the positive and negative anodes input terminal in above-described embodiment.Bus capacitor
Cathode be connected with the cathode of positive and negative anodes input terminal.
The utility model embodiment bring it is following the utility model has the advantages that
The control device and vehicle-used inverter of a kind of vehicle-used inverter provided by the utility model, including sequentially connected electricity
Press conversion module, active discharge module, main control chip and backup power source logic module；Voltage transformation module, for bus is electric
Pressure is converted to specified power supply voltage；Main control chip is sent to actively for receiving active discharge instruction, and by active discharge instruction
Discharge module；Active discharge module, for being released according to active discharge instruction to specified power supply voltage；Backup power source logic
Module is used for when main power voltage is less than reference voltage, by specified power supply voltage transmission to inverter low-voltage power circuit.This
The reliability and thermal diffusivity of vehicle-used inverter can be improved in utility model, reduces cost and failure rate.
In the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in utility model.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The flow chart and block diagram in the drawings show system, method and the calculating of multiple embodiments according to the present utility model
The architecture, function and operation in the cards of machine program product.In this regard, each box in flowchart or block diagram can
To represent a part of a module, section or code, a part of the module, section or code includes one or more
A executable instruction for implementing the specified logical function.It should also be noted that in some implementations as replacements, in box
The function of being marked can also occur in a different order than that indicated in the drawings.For example, two continuous boxes actually may be used
To be basically executed in parallel, they can also be executed in the opposite order sometimes, and this depends on the function involved.It is also noted that
, the combination of each box in block diagram and or flow chart and the box in block diagram and or flow chart can be with executing
Defined function or the dedicated hardware based system of movement realize, or can use specialized hardware and computer instruction
Combination is to realize.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
It with the specific work process of system, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.The apparatus embodiments described above are merely exemplary, for example, the division of the unit,
Only a kind of logical function partition, there may be another division manner in actual implementation, in another example, multiple units or components can
To combine or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be through some communication interfaces, device or unit it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.
In addition, each functional unit in each embodiment of the utility model can integrate in one processing unit,
It can be each unit to physically exist alone, can also be integrated in one unit with two or more units.
Finally, it should be noted that embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned
The utility model is described in detail in embodiment, those skilled in the art should understand that: it is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to skill documented by previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation or replacement, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described is wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of control device of vehicle-used inverter, which is characterized in that including sequentially connected voltage transformation module, active discharge
Module, main control chip and backup power source logic module；
The voltage transformation module, for busbar voltage to be converted to specified power supply voltage；
The main control chip for receiving the Rule of judgment of active discharge, and sends active discharge instruction to active discharge module；
The active discharge module, for being released according to active discharge instruction to the specified power supply voltage；
The backup power source logic module, for when main power voltage is less than reference voltage, the specified power supply voltage to be passed
Transport to inverter low-voltage power circuit.
2. the apparatus according to claim 1, which is characterized in that the voltage transformation module includes: positive and negative anodes input terminal, is total to
Mould inductance T1, transformer T2, power supply control chip U1, power supply control metal-oxide-semiconductor Q1, counnter attack diode D1, filter inductance L1 and steady
Voltage capacitance C1；
The positive and negative anodes input terminal inputs the busbar voltage, and the anode of the positive and negative anodes input terminal is with the common mode inductance T1's
Primary one end is connected, and the cathode of the positive and negative anodes input terminal is connected with secondary one end of the common mode inductance T1, the common mode electricity
The primary other end of sense T1 is connected with primary one end of the transformer T2, the secondary other end ground connection of the common mode inductance T1,
The primary other end of the transformer T2 is connected with the drain electrode of power supply control metal-oxide-semiconductor Q1, the secondary one of the transformer T2
End is connected with the anode of the counnter attack diode D1, and the secondary other end ground connection of the transformer T2, the power supply controls metal-oxide-semiconductor
The grid of Q1 is connected with the power supply control chip U1, the source electrode ground connection of the power supply control metal-oxide-semiconductor Q1, the counnter attack diode
The cathode of D1 is connected with one end of the filter inductance L1, and the other end of the filter inductance L1 and the electric capacity of voltage regulation C1 are just
Extremely it is connected, the cathode ground connection of the electric capacity of voltage regulation C1.
3. the apparatus of claim 2, which is characterized in that the power supply control chip U1 is by adjusting duty ratio control
The electric capacity of voltage regulation C1 exports the specified power supply voltage.
4. the apparatus of claim 2, which is characterized in that the active discharge module include release control chip U2,
It releases and controls metal-oxide-semiconductor Q2, bleeder resistance matrix；
Described release controls chip U2 and controls the grid of metal-oxide-semiconductor Q2 with described release and be connected, and described release controls the leakage of metal-oxide-semiconductor Q2
Pole is connected with the anode of the electric capacity of voltage regulation C1, and described release controls the source electrode and the one of the bleeder resistance matrix of metal-oxide-semiconductor Q2
End is connected, the other end ground connection of the bleeder resistance matrix.
5. device according to claim 4, which is characterized in that described release controls chip U2 by adjusting duty ratio output
Discharge control signal.
6. device according to claim 4, which is characterized in that the bleeder resistance matrix includes multiple series and parallel structures
Resistance, the resistance are identical.
7. the apparatus of claim 2, which is characterized in that the backup power source logic module includes Backup Power Switch
Metal-oxide-semiconductor Q3, backup power source control logic circuit, comparator U3 and power supply sample circuit；
The drain electrode of the Backup Power Switch metal-oxide-semiconductor Q3 is connected with the anode of the electric capacity of voltage regulation C1, the Backup Power Switch
The grid of metal-oxide-semiconductor Q3 is connected with one end of the backup power source control logic circuit, the source of the Backup Power Switch metal-oxide-semiconductor Q3
Pole is connected with the power circuit, the first end phase of the other end of the backup power source control logic circuit and the comparator U3
Even, one end of the power supply sample circuit is connected with the second end of the comparator U3, the other end of the power supply sample circuit
It is connected with the power circuit, the third of the comparator U3 is terminated into the reference voltage.
8. device according to claim 7, which is characterized in that the power supply sample circuit, for acquiring the main power source
Voltage；
The comparator U3 exports comparison result for the main power voltage and the reference voltage to be compared；
The backup power source control logic circuit, for being that the main power voltage is less than the benchmark electricity in the comparison result
In the case where pressure, issues backup power source and control signal；
The Backup Power Switch metal-oxide-semiconductor Q3, for controlling signal closure switch, Xiang Suoshu inverter according to the backup power source
Low-voltage power circuit exports the specified power supply voltage.
9. the apparatus according to claim 1, which is characterized in that the specified power supply voltage is+12V.
10. a kind of vehicle-used inverter, which is characterized in that the control including vehicle-used inverter as described in any one of claims 1 to 9
Device processed further includes the bus capacitor being connected with the control device of the vehicle-used inverter；
The bus capacitor, for the control device inlet highway voltage to the vehicle-used inverter.
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| CN201920228096.5U CN209562231U (en) | 2019-02-21 | 2019-02-21 | The control device and vehicle-used inverter of vehicle-used inverter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112829587A (en) * | 2019-11-25 | 2021-05-25 | 上海汽车变速器有限公司 | Motor controller active discharge system used in low-voltage electric fault |
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2019
- 2019-02-21 CN CN201920228096.5U patent/CN209562231U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112829587A (en) * | 2019-11-25 | 2021-05-25 | 上海汽车变速器有限公司 | Motor controller active discharge system used in low-voltage electric fault |
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