CN107546972A - A kind of integrated electric machine controller pre-charge method - Google Patents
A kind of integrated electric machine controller pre-charge method Download PDFInfo
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- CN107546972A CN107546972A CN201710992342.XA CN201710992342A CN107546972A CN 107546972 A CN107546972 A CN 107546972A CN 201710992342 A CN201710992342 A CN 201710992342A CN 107546972 A CN107546972 A CN 107546972A
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- 230000003111 delayed effect Effects 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a kind of integrated electric machine controller pre-charge method, 1) the Support Capacitor capacity according to vehicle-mounted electric machine controller, pre-charge resistance parameter, obtain capacitor charging time constant, τ=RC；2) timing immediately after charging starts, capacitance terminal busbar voltage Uc1 is gathered after the t1 that is delayed, the actual voltage value of electrokinetic cell is derived according to capacitive charge characteristicIntegrated electric machine controller pre-charge method provided by the invention, the surge current of precharge is reduced, add the reliability and stability of controller preliminary filling electrical circuit.
Description
Technical field
The present invention relates to a kind of integrated electric machine controller pre-charge method.
Background technology
Vehicle motor controller is one of New-energy electric vehicle kernel component, is by vehicle mounted dynamic battery or super electricity
The direct current of the energy storage devices such as appearance is converted to the critical component of three-phase alternating current used in motor.The preliminary filling of prior art is automatically controlled
System strategy, the judgement completed for precharge, is divided into three kinds substantially：1) electric machine controller DC bus current is gathered, works as direct current
Bus current completes signal close to output preliminary filling during 0A；2) electricity of vehicle-mounted electrical source of power is gathered by single power-supply management system
Pressure, is then sent to electric machine controller by supply voltage value using bus communication and is compared, defeated when voltage tends to be equal at two
Go out preliminary filling and complete signal；3) electric machine controller collection busbar voltage, when busbar voltage reaches the closure pressure value of setting, closure master
Contactor, it is delayed after a period of time, sends precharge and complete signal.
Current integrated electric machine controller progressively turns into main flow, and pre-charge system is integrated in inside electric machine controller, by electricity
Machine controller is controlled itself.Because the scope range of the fluctuation of voltage of the electrokinetic cell of new-energy automobile is larger, while current sense
The accuracy error and onboard power power-supply management system of device and voltage and current sampling circuit and the one of motor controller system
It is the problems such as cause property, actual when electric machine controller output preliminary filling may be caused to complete signal to be pre-charged unfinished, cause onboard power
There is larger voltage difference in power supply, the risk for having momentary surges rush of current with electric machine controller dc bus, and damage master connects
Tentaculum, influence the safety and reliability of integrated electric machine controller.
The present invention provides a kind of integrated electric machine controller pre-charge method, under conditions of hardware cost is not increased, knot
Parameter of electric machine controller itself is closed, using new preliminary filling control method, realizes accurate preliminary filling control and fault detect, configuration
Simply, using flexible, practicality is very strong, can greatly improve the reliability and stability of integrated electric machine controller.
The content of the invention
It is pre- that the technical scheme of the invention used to solve above-mentioned technical problem is to provide a kind of integrated electric machine controller
Charging method, wherein, concrete technical scheme is：
1) according to the Support Capacitor capacity of vehicle-mounted electric machine controller, pre-charge resistance parameter, it is normal to obtain capacitor charging time
Number τ=RC；
2) charging start after timing immediately, be delayed t1 after gather capacitance terminal busbar voltage Uc1, pushed away according to capacitive charge characteristic
Export the actual voltage value of electrokinetic cell
3) be delayed a period of time t2 again, gathers capacitance terminal busbar voltage Uc2, the parameter of checking step 2 and 1 whether phase
Closely, if mismatching after adjustment time constant, return to step 2；Match the actual voltage value Udc2 of then renewal impetus battery；
4) it is delayed after the t3 times, counter count2 (count2 is initialized as 0) plus 1, the capacitance terminal busbar voltage of collection
When value Vc3 and Vdc2 difference (are less than setting value Δ U1) in allowed band, main contactor is closed, disconnects preliminary filling electrical contact
Device；Not in the range of, then repeat step 4, until count2 be more than 3, if count2 be more than 3, report preliminary filling electrical circuit
Failure；
5) it is delayed after the t4 times, bus capacitor voltage Vc3 is gathered, if Udc2-Uc4<Δ U2 is set up, then judges main contact
Device closes, and otherwise reports main contactor loop fault.
Above-mentioned integrated electric machine controller pre-charge method, wherein：It is special according to the existing parameter of controller and electric capacity charging
Property come control and judge calibrate preliminary filling electrical circuit.
A kind of integrated electric machine controller described in application：
Electric machine controller increases pre-charge circuit, contactor SW1, SW2 in DC loop, pre-charge resistance R1, R1 with
It is in parallel with main contactor SW1 after SW2 series connection；The main process of precharge is：SW2 is closed first, enters line precharge, has been pre-charged
Into rear disconnection SW2, SW1 is closed.
The present invention has the advantages that relative to prior art：
1) surge current of precharge is reduced, adds the reliability and stability of controller preliminary filling electrical circuit；
2) it is used to judge that the fault detect of preliminary filling electrical circuit includes preliminary filling electrical circuit and main contactor loop, adds control
The fault detection capability of device and the temperature of system and reliability.
Brief description of the drawings
Fig. 1 is the system circuit diagram of integrated electric machine controller.
Fig. 2 is precharge circuit controls flow chart.
Embodiment
The present invention will be further described in detail below in conjunction with the accompanying drawings.As shown in figure 1, system is mainly by onboard power electricity
Pond V1, integrated electric machine controller (in dotted line frame), motor.Pre-charge circuit inside integrated electric machine controller is mainly by leading
Contactor SW1, pre-charge-relay SW2 and preliminary filling resistance R1 compositions, application scheme also needs to extra sample circuit in addition
And application scheme is implemented in control circuit (unlisted), control circuit control.
The specific implementation step of the present invention is as follows：
1) according to the Support Capacitor capacity of vehicle-mounted electric machine controller, pre-charge resistance parameter, it is normal to obtain capacitor charging time
Number τ=RC；
2) charging start after timing immediately, be delayed t1 after gather capacitance terminal busbar voltage Uc1, pushed away according to capacitive charge characteristic
Export the actual voltage value of electrokinetic cell；
3) be delayed a period of time t2 again, gathers capacitance terminal busbar voltage Uc2, the parameter of checking step 2 and 1 whether phase
Closely, if mismatching after adjustment time constant, return to step 2；Match the actual voltage value Udc2 of then renewal impetus battery；
4) it is delayed after the t3 times, counter count2 (count2 is initialized as 0) plus 1, the capacitance terminal busbar voltage of collection
When value Vc3 and Vdc2 difference (are less than setting value Δ U1) in allowed band, main contactor is closed, disconnects preliminary filling electrical contact
Device；Not in the range of, then step 4 is repeated, until count2 is more than 3..If count2 is more than 3, preliminary filling electrical circuit is reported
Failure；
5) it is delayed after the t4 times, bus capacitor voltage Vc3 is gathered, if Udc2-Uc4<Δ U2 is set up, then judges main contact
Device closes, and otherwise reports main contactor loop fault.
Specific procedure flow chart is shown in accompanying drawing 2.
Although the present invention is disclosed as above with preferred embodiment, so it is not limited to the present invention, any this area skill
Art personnel, without departing from the spirit and scope of the present invention, when a little modification and perfect, therefore the protection model of the present invention can be made
Enclose to work as and be defined by what claims were defined.
Claims (3)
- A kind of 1. integrated electric machine controller pre-charge method, it is characterised in that：1) according to the Support Capacitor capacity of vehicle-mounted electric machine controller, pre-charge resistance parameter, obtain capacitor charging time constant, τ= RC；2) charging start after timing immediately, be delayed t1 after gather capacitance terminal busbar voltage Uc1, derived according to capacitive charge characteristic The actual voltage value of electrokinetic cell3) be delayed a period of time t2 again, gathers capacitance terminal busbar voltage Uc2, whether the parameter of checking step 2 and 1 is close, such as After fruit mismatches then adjustment time constant, return to step 2；Match the actual voltage value Udc2 of then renewal impetus battery；4) it is delayed after the t3 times, counter count2 (count2 is initialized as 0) plus 1, the capacitance terminal bus voltage value Vc3 of collection When difference with Vdc2 (is less than setting value Δ U1) in allowed band, main contactor is closed, disconnects pre-charge contactor；Do not exist In the range of, then step 4 is repeated, until count2 is more than 3, if count2 is more than 3, report is pre-charged loop fault；5) it is delayed after the t4 times, bus capacitor voltage Vc3 is gathered, if Udc2-Uc4<Δ U2 is set up, then judges that main contactor closes Close, otherwise report main contactor loop fault.
- 2. integrated electric machine controller pre-charge method as claimed in claim 1, it is characterised in that：Joined according to controller Number and capacitive charge characteristic calibrate preliminary filling electrical circuit to control and judge.
- 3. one kind applies integrated electric machine controller as claimed in claim 2, it is characterised in that：Electric machine controller increases pre-charge circuit, and contactor SW1, SW2 in DC loop, pre-charge resistance R1, R1 and SW2 go here and there It is in parallel with main contactor SW1 after connection；The main process of precharge is：SW2 is closed first, enters line precharge, after the completion of precharge SW2 is disconnected, closes SW1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710992342.XA CN107546972A (en) | 2017-10-23 | 2017-10-23 | A kind of integrated electric machine controller pre-charge method |
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| CN201710992342.XA CN107546972A (en) | 2017-10-23 | 2017-10-23 | A kind of integrated electric machine controller pre-charge method |
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| CN107546972A true CN107546972A (en) | 2018-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108839568A (en) * | 2018-09-07 | 2018-11-20 | 珠海银隆电器有限公司 | Electric vehicle pre-charging control method and device |
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| CN101830223A (en) * | 2009-03-09 | 2010-09-15 | 通用汽车环球科技运作公司 | The control of the generating-starter with breakaway-element high-tension battery of motor vehicle driven by mixed power |
| CN102386655A (en) * | 2011-11-11 | 2012-03-21 | 郑州宇通客车股份有限公司 | Pre-charging control method for vehicle motor controller |
| JP2013205257A (en) * | 2012-03-28 | 2013-10-07 | Sanyo Electric Co Ltd | Power supply device, and vehicle and power storage device equipped with power supply device |
| CN106684961A (en) * | 2015-11-05 | 2017-05-17 | 通用汽车环球科技运作有限责任公司 | Self turn-on and turn-off pre-charge circuit to limit bulk capacitor inrush current |
| JP2017184333A (en) * | 2016-03-28 | 2017-10-05 | 住友重機械工業株式会社 | Rush current reduction circuit |
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2017
- 2017-10-23 CN CN201710992342.XA patent/CN107546972A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830223A (en) * | 2009-03-09 | 2010-09-15 | 通用汽车环球科技运作公司 | The control of the generating-starter with breakaway-element high-tension battery of motor vehicle driven by mixed power |
| CN102386655A (en) * | 2011-11-11 | 2012-03-21 | 郑州宇通客车股份有限公司 | Pre-charging control method for vehicle motor controller |
| JP2013205257A (en) * | 2012-03-28 | 2013-10-07 | Sanyo Electric Co Ltd | Power supply device, and vehicle and power storage device equipped with power supply device |
| CN106684961A (en) * | 2015-11-05 | 2017-05-17 | 通用汽车环球科技运作有限责任公司 | Self turn-on and turn-off pre-charge circuit to limit bulk capacitor inrush current |
| JP2017184333A (en) * | 2016-03-28 | 2017-10-05 | 住友重機械工業株式会社 | Rush current reduction circuit |
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| 王钦普 等: "纯电动客车高压配电系统设计" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108839568A (en) * | 2018-09-07 | 2018-11-20 | 珠海银隆电器有限公司 | Electric vehicle pre-charging control method and device |
| CN108839568B (en) * | 2018-09-07 | 2024-02-23 | 珠海银隆电器有限公司 | Electric automobile pre-charge control method and device |
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Application publication date: 20180105 |