CN103887784A - DC-bus-capacitor discharge device of motor controller used for electric vehicle and electric vehicle - Google Patents
DC-bus-capacitor discharge device of motor controller used for electric vehicle and electric vehicle Download PDFInfo
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- CN103887784A CN103887784A CN201210560950.0A CN201210560950A CN103887784A CN 103887784 A CN103887784 A CN 103887784A CN 201210560950 A CN201210560950 A CN 201210560950A CN 103887784 A CN103887784 A CN 103887784A
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Abstract
The invention proposes a DC-bus-capacitor discharge device of a motor controller used for an electric vehicle. The DC-bus-capacitor discharge device includes a discharge module; a first controllable switch which is serially connected with the discharge module and connected in parallel with a DC bus capacitor after being serially connected with the discharge module; and a second switch connected in parallel with the first controllable switch. The motor controller of the electric vehicle controls the first controllable switch to switch on after receiving a switch-off signal of the electric vehicle so that the DC bus capacitor is discharged for a first time through the discharge module, and the DC bus capacitor is discharged for a second time through the discharge module after the second switch is switched on. The discharge device is capable of discharging the residual high voltage of the bus capacitor for twice after the electric vehicle is shut down so that the discharge device has a dual discharge function and high-voltage operation and maintenance security of maintenance personnel is ensured in a substantial degree. The invention also proposes the electric vehicle.
Description
Technical field
The present invention relates to electric vehicle engineering field, particularly a kind of electric machine controller for motor vehicle dc-link capacitance bleeder and a kind of electric automobile with it.
Background technology
Current, energy-conservation, the oligosaprobic advantage of height of electric automobile, has become the main direction of contemporary development of automobile.The voltage of batteries of electric automobile is all high pressure conventionally, and following cell voltage can be more and more higher, therefore, people are in efficient, the energy-saving and environmental protection of enjoying that electric automobile brings to people, comfortable driving impression, and high-tension electricity brings the danger of more high-tension electricity also to rider or vehicle maintenance personnel.Particularly, for High-Voltage Electrical Appliances component maintenance personnel, they are subject to the security threat of high-tension electricity larger.
Electric machine controller in electric automobile is high-power parts, and there is a high voltage bus electric capacity its inside, and capacity is larger, can store more high voltage electricity.After high-tension battery disconnects, in electric machine controller, bus capacitor electric charge relies on nature electric discharge, but can need the time of growing just can release below safe voltage, if maintenance personal in this time removes to keep in repair electric machine controller, be easy to, by the residual high pressure electric injury of electric machine controller bus capacitor, threaten maintenance personal's personal safety.
In prior art, normally the attendant of electric machine controller adopts a kind of electric discharge frock in the time of dismounting electric machine controller, by hand bus capacitor is discharged; The scheme also having is that the electric machine controller front motor controller that quits work automatically starts high-pressure discharging device and carries out automatic discharging.
But, the shortcoming that prior art exists is, the electric machine controller for motor vehicle DC bus high-tension electricity technology of manually releasing, the manual method that bus capacitor is discharged is easily forgotten by maintenance personal in practical operation, so just easily allows in the danger of maintenance personal in electric shock.And electric machine controller for motor vehicle starts the technology that high-pressure discharging device is released to DC bus high-tension electricity automatically, to realize automatic discharging in the time that electric machine controller quits work, but while being exactly inevitably the inefficacy of bleed-off circuit relay, just cannot realize the residual high pressure electricity of the bus capacitor of automatically releasing, the danger that at this moment still has high pressure to get an electric shock for maintenance personal.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency.
For this reason, one object of the present invention is to propose a kind of electric machine controller for motor vehicle dc-link capacitance bleeder, can after cutting out, electric automobile carry out releasing for twice to the residual high pressure of bus capacitor, there is dual drainage function, ensured largely maintenance personal's high-tension electricity Operation and Maintenance safety.
Another object of the present invention also proposes a kind of electric automobile.
For achieving the above object, a kind of electric machine controller for motor vehicle dc-link capacitance bleeder that the embodiment of one aspect of the present invention proposes, comprising: the module of releasing; The first gate-controlled switch, described the first gate-controlled switch with described in the module of releasing connect, described the first gate-controlled switch with described in the module of releasing in parallel with dc-link capacitance after connecting; Second switch, described second switch is in parallel with described the first gate-controlled switch; Wherein, the electric machine controller of electric automobile is after receiving the shutdown signal of described electric automobile, control the closed so that described dc-link capacitance of described the first gate-controlled switch and once release by the described module of releasing, and described dc-link capacitance carries out secondary by the described module of releasing and releases after described second switch closure.
According to the electric machine controller for motor vehicle dc-link capacitance bleeder of the embodiment of the present invention, can after cutting out, electric automobile be undertaken releasing for twice by the module of releasing by dc-link capacitance, there is dual function of releasing, can ensure reliably that attendant avoids high-tension electricity Danger Electric shock risk.In addition, even for example partial failure of the first gate-controlled switch control of an automatic bleed-off circuit in this bleeder, the work of still can releasing reliably of the loop of for example second switch control of another one bleed-off circuit, therefore, ensured largely attendant's high-tension electricity Operation and Maintenance safety.
In one embodiment of the invention, described second switch is position switch, in the time that DC bus connector is disconnected, and described second switch closure.
Wherein, described the first gate-controlled switch is one of electromagnetic switch, metal-oxide layer-semiconductor-field-effect transistor MOSFET, insulated gate bipolar transistor IGBT and relay.
In an example of the present invention, described in the module of releasing be resistance.
In addition, another aspect of the present invention embodiment has also proposed a kind of electric automobile, comprises above-mentioned electric machine controller for motor vehicle dc-link capacitance bleeder.This electric automobile can be in the time that its electric machine controller quits work, the high-tension electricity that above-mentioned electric machine controller for motor vehicle bus capacitor bleeder is dc-link capacitance is once released, and in the time that DC bus connector disconnects, be that the high-tension electricity of dc-link capacitance carries out secondary and releases, to ensure maintenance personal's personal safety.In addition, two kinds of automatic discharging functions that this electric machine controller for motor vehicle bus capacitor bleeder comprises, be not affected each other, even one of them automatic discharging partial failure, another one discharge loop still can normally be worked, the high-tension electricity Operation and Maintenance safety that has ensured largely attendant, has improved reliability greatly.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
The present invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments obviously and easily and understand, wherein:
Fig. 1 is the block diagram of electric machine controller for motor vehicle dc-link capacitance bleeder according to an embodiment of the invention; And
Fig. 2 is the structural representation of electric machine controller for motor vehicle according to an embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
Disclosing below provides many different embodiment or example to be used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts to specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, First Characteristic described below Second Characteristic it " on " structure can comprise that the first and second Characteristics creations are the direct embodiment of contact, also can comprise the embodiment of other Characteristics creation between the first and second features, such the first and second features may not be direct contacts.
In description of the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be to be directly connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
With reference to description and accompanying drawing below, these and other aspects of embodiments of the invention will be known.In these descriptions and accompanying drawing, specifically disclose some specific implementations in embodiments of the invention, represent some modes of the principle of implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise all changes, amendment and the equivalent within the scope of spirit and the intension that falls into additional claims.
Describe with reference to the accompanying drawings the electric machine controller for motor vehicle dc-link capacitance bleeder proposing according to the embodiment of the present invention and there is its electric automobile.
As shown in Figure 1, the electric machine controller for motor vehicle dc-link capacitance bleeder that one embodiment of the invention proposes comprises release module 10, the first gate-controlled switch 20 and second switch 30.Wherein, the first gate-controlled switch 20 is connected with the module 10 of releasing, and the first gate-controlled switch 20 is in parallel with dc-link capacitance C after connecting with the module 20 of releasing, and second switch 30 and the first gate-controlled switch 20 are connected in parallel.Wherein, the electric machine controller 40 of electric automobile is after receiving the shutdown signal of electric automobile, control the first gate-controlled switch 20 closures so that dc-link capacitance C once releases by the module 10 of releasing, and carry out secondary at the closed rear dc-link capacitance C of second switch 30 by the module 10 of releasing and release.
In one embodiment of the invention, as shown in Figure 2, second switch 30 is position switch 2, in the time that DC bus connector 50 is disconnected, and second switch 30 closures.
Therefore, the electric machine controller for motor vehicle dc-link capacitance bleeder that the embodiment of the present invention proposes, has double insurance function, before attendant safeguards electric machine controller 40, in fact the residual charge that, electric machine controller 40 is controlled dc-link capacitance C has passed through twice electric discharge.I.e. speech; automatic discharging (loop that second switch 30 is controlled) when automatic discharging (loop that the first gate-controlled switch 20 is controlled) when electric machine controller 40 is shut down and disconnection electric machine controller high voltage dc bus connector 50; so just can ensure reliably that maintenance personal is before contact high-voltage charged body, the electric charge of the dc-link capacitance C in electric machine controller 40 has thoroughly been released.This bleeder can ensure that personnel, before may touching high-voltage charged body, release the voltage of dc-link capacitance C to below human safety voltage reliably.
Particularly, in one embodiment of the invention, the first gate-controlled switch 20 can be electromagnetic switch, MOSFET(Metal-Oxide-Semiconductor Field-Effect Transistor, metal-oxide layer-semiconductor-field-effect transistor), IGBT(Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) and one of relay.
In one embodiment of the invention, as shown in Figure 2, the module of releasing 10 is resistance R.
In one embodiment of the invention, Fig. 2 is the structural representation of electric machine controller for motor vehicle 40, and this schematic diagram comprises the electric machine controller for motor vehicle dc-link capacitance bleeder 100 that the embodiment of the present invention proposes.
As shown in Figure 2, electric machine controller 40 comprises dc-link capacitance C, MCU(Micro ControlUnit, micro-control unit) control circuit 41, three phase power bridge 42, electric machine controller shell body 43, high voltage dc bus connector 50.Particularly, the electric machine controller for motor vehicle dc-link capacitance bleeder 100 that the embodiment of the present invention proposes comprises that high pressure bleeder resistance R, electric machine controller are shut down the control relay 1 of automatically releasing, electric machine controller high voltage dc bus connector 50 disconnects automatically closed position switch 2.Wherein, resistance R, relay 1 and position switch 2 these three parts be connected to by the mode of series and parallel connections on the high voltage dc bus of electric machine controller 40 inside (be relay 1 and position switch 2 parallel with one another after and resistance R be connected in series, one end of resistance R is connected with high voltage dc bus negative pole end DC-, the other end of resistance R is connected with one end of position switch 2 with one end of relay 1 respectively, the other end of the other end of relay 1 and position switch 2 is connected with the positive terminal DC+ of high voltage dc bus respectively), and be arranged on the appropriate location of electric machine controller 40 inside.These electric machine controller for motor vehicle dc-link capacitance bleeder 100 operation principles are as follows:
Maintenance personal is before preparing maintenance electric machine controller 40, normally first close control device all on car (comprising electric machine controller) by the key switch on car, at this moment electric machine controller 40 can be controlled control relay 1 closure of automatically releasing by the MCU control circuit 41 of electric machine controller inside out-of-work simultaneously, the high voltage electricity of dc-link capacitance C, by relay 1 and bleeder resistance R conducting starter motor controller dc-link capacitance automatic discharging function, carries out the automatic discharging of first stage and once releases to dc-link capacitance C.In the time that maintenance personal safeguards electric machine controller 40, the step that must experience is the high voltage dc bus connector 42 that first disconnects electric machine controller 40, now, when the high voltage dc bus connector 42 of electric machine controller 40 disconnects, will trigger the position switch 2 that is arranged on electric machine controller 40 inside, position switch 2 closures, the high voltage electricity of dc-link capacitance C is by position switch 2 and bleeder resistance R conducting starter motor controller bus capacitor automatic discharging function, and realizing is that secondary is released to the second stage automatic discharging of dc-link capacitance C.Like this, the electric machine controller for motor vehicle dc-link capacitance bleeder 100 proposing by the embodiment of the present invention, can realize reliably before attendant safeguards electric machine controller 40 high-tension electricity of dc-link capacitance C is released below human safety voltage, can ensure reliably attendant's high-tension electricity handling safety.
According to the electric machine controller for motor vehicle dc-link capacitance bleeder 100 of the embodiment of the present invention, can after cutting out, electric automobile be undertaken releasing for twice by the module 10 of releasing by dc-link capacitance C, there is dual function of releasing, can ensure reliably that attendant avoids high-tension electricity Danger Electric shock risk.In addition, even for example partial failure of the first gate-controlled switch control of an automatic bleed-off circuit in this bleeder, the work of still can releasing reliably of the loop of for example second switch control of another one bleed-off circuit, therefore, ensured largely attendant's high-tension electricity Operation and Maintenance safety.
In addition, an alternative embodiment of the invention has also proposed a kind of electric automobile, comprises above-mentioned electric machine controller for motor vehicle dc-link capacitance bleeder 100.This electric automobile can be in the time that its electric machine controller quits work, the high-tension electricity that above-mentioned electric machine controller for motor vehicle bus capacitor bleeder 100 is dc-link capacitance is once released, and in the time that DC bus connector disconnects, be that the high-tension electricity of dc-link capacitance carries out secondary and releases, to ensure maintenance personal's personal safety.In addition, two kinds of automatic discharging functions that this electric machine controller for motor vehicle bus capacitor bleeder comprises, be not affected each other, even one of them automatic discharging partial failure, another one discharge loop still can normally be worked, the high-tension electricity Operation and Maintenance safety that has ensured largely attendant, has improved reliability greatly.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (5)
1. an electric machine controller for motor vehicle dc-link capacitance bleeder, is characterized in that, comprising:
The module of releasing;
The first gate-controlled switch, described the first gate-controlled switch with described in the module of releasing connect, described the first gate-controlled switch with described in the module of releasing in parallel with dc-link capacitance after connecting;
Second switch, described second switch is in parallel with described the first gate-controlled switch;
Wherein, the electric machine controller of electric automobile is after receiving the shutdown signal of described electric automobile, control the closed so that described dc-link capacitance of described the first gate-controlled switch and once release by the described module of releasing, and described dc-link capacitance carries out secondary by the described module of releasing and releases after described second switch closure.
2. electric machine controller for motor vehicle dc-link capacitance bleeder as claimed in claim 1, is characterized in that, described second switch is position switch, in the time that DC bus connector is disconnected, and described second switch closure.
3. electric machine controller for motor vehicle dc-link capacitance bleeder as claimed in claim 1, it is characterized in that, described the first gate-controlled switch is one of electromagnetic switch, metal-oxide layer-semiconductor-field-effect transistor MOSFET, insulated gate bipolar transistor IGBT and relay.
4. electric machine controller for motor vehicle dc-link capacitance bleeder as claimed in claim 1, is characterized in that, described in the module of releasing be resistance.
5. an electric automobile, is characterized in that, comprises the electric machine controller for motor vehicle dc-link capacitance bleeder as described in claim 1-4 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210560950.0A CN103887784B (en) | 2012-12-20 | 2012-12-20 | Electric machine controller for motor vehicle dc-link capacitance bleeder and electric automobile |
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| CN201210560950.0A CN103887784B (en) | 2012-12-20 | 2012-12-20 | Electric machine controller for motor vehicle dc-link capacitance bleeder and electric automobile |
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| CN103887784A true CN103887784A (en) | 2014-06-25 |
| CN103887784B CN103887784B (en) | 2017-03-15 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242702A (en) * | 2014-10-10 | 2014-12-24 | 苏州弘鹏新能源有限公司 | Busbar capacitance discharge protection circuit of photovoltaic inverter |
| CN106042938A (en) * | 2016-06-20 | 2016-10-26 | 合肥卡诺汽车空调有限公司 | High-voltage circuit system for new energy automobile air conditioner |
| CN106356921A (en) * | 2016-08-31 | 2017-01-25 | 北京新能源汽车股份有限公司 | Power-discharging circuit and method of electric automobile and electric automobile |
| CN107901762A (en) * | 2017-11-06 | 2018-04-13 | 北京长城华冠汽车科技股份有限公司 | Electric automobile is released crash handling method and system |
| CN108123428A (en) * | 2016-11-29 | 2018-06-05 | 长城汽车股份有限公司 | Voltage drainage method, system and the vehicle of electric machine controller |
| CN108819719A (en) * | 2018-05-03 | 2018-11-16 | 开沃新能源汽车集团有限公司 | A kind of charging method and device of motor controller of new energy automobile |
| CN110212510A (en) * | 2019-07-15 | 2019-09-06 | 北京精密机电控制设备研究所 | A kind of multipath is comprehensive to rise circuit from inhibition busbar voltage pump |
| CN110233509A (en) * | 2019-06-07 | 2019-09-13 | 中车永济电机有限公司 | Vehicle motor controller bus capacitor leadage circuit |
| CN110233510A (en) * | 2019-06-07 | 2019-09-13 | 中车永济电机有限公司 | Vehicle motor controller bus capacitor is released control method |
| CN110492459A (en) * | 2018-05-15 | 2019-11-22 | 广州小鹏汽车科技有限公司 | A kind of high-voltage discharge method, device and motor |
| CN111262268A (en) * | 2018-11-30 | 2020-06-09 | 比亚迪股份有限公司 | Electric automobile and discharge device and method thereof |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242702A (en) * | 2014-10-10 | 2014-12-24 | 苏州弘鹏新能源有限公司 | Busbar capacitance discharge protection circuit of photovoltaic inverter |
| CN106042938A (en) * | 2016-06-20 | 2016-10-26 | 合肥卡诺汽车空调有限公司 | High-voltage circuit system for new energy automobile air conditioner |
| CN106356921A (en) * | 2016-08-31 | 2017-01-25 | 北京新能源汽车股份有限公司 | Power-discharging circuit and method of electric automobile and electric automobile |
| CN106356921B (en) * | 2016-08-31 | 2019-06-18 | 北京新能源汽车股份有限公司 | Power-discharging circuit and method of electric automobile and electric automobile |
| CN108123428B (en) * | 2016-11-29 | 2020-03-03 | 长城汽车股份有限公司 | Voltage discharge method and system of motor controller and vehicle |
| CN108123428A (en) * | 2016-11-29 | 2018-06-05 | 长城汽车股份有限公司 | Voltage drainage method, system and the vehicle of electric machine controller |
| CN107901762A (en) * | 2017-11-06 | 2018-04-13 | 北京长城华冠汽车科技股份有限公司 | Electric automobile is released crash handling method and system |
| CN107901762B (en) * | 2017-11-06 | 2020-07-03 | 北京长城华冠汽车科技股份有限公司 | Electric automobile discharge failure processing method and system |
| CN108819719A (en) * | 2018-05-03 | 2018-11-16 | 开沃新能源汽车集团有限公司 | A kind of charging method and device of motor controller of new energy automobile |
| CN108819719B (en) * | 2018-05-03 | 2022-02-15 | 开沃新能源汽车集团有限公司 | Discharging method and device for motor controller of new energy automobile |
| CN110492459A (en) * | 2018-05-15 | 2019-11-22 | 广州小鹏汽车科技有限公司 | A kind of high-voltage discharge method, device and motor |
| CN111262268A (en) * | 2018-11-30 | 2020-06-09 | 比亚迪股份有限公司 | Electric automobile and discharge device and method thereof |
| CN111262268B (en) * | 2018-11-30 | 2021-09-21 | 比亚迪股份有限公司 | Electric automobile and discharge device and method thereof |
| CN110233510A (en) * | 2019-06-07 | 2019-09-13 | 中车永济电机有限公司 | Vehicle motor controller bus capacitor is released control method |
| CN110233509A (en) * | 2019-06-07 | 2019-09-13 | 中车永济电机有限公司 | Vehicle motor controller bus capacitor leadage circuit |
| CN110212510A (en) * | 2019-07-15 | 2019-09-06 | 北京精密机电控制设备研究所 | A kind of multipath is comprehensive to rise circuit from inhibition busbar voltage pump |
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