CN202782643U - Connection circuit of power battery and motor in hybrid electric vehicle - Google Patents
Connection circuit of power battery and motor in hybrid electric vehicle Download PDFInfo
- Publication number
- CN202782643U CN202782643U CN2012204614174U CN201220461417U CN202782643U CN 202782643 U CN202782643 U CN 202782643U CN 2012204614174 U CN2012204614174 U CN 2012204614174U CN 201220461417 U CN201220461417 U CN 201220461417U CN 202782643 U CN202782643 U CN 202782643U
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- relay
- motor
- main relay
- power
- power battery
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Abstract
The utility model relates to a connection circuit of a power battery and a motor in a hybrid electric vehicle. The connection circuit comprises a motor, a motor controller with a pre-charge capacitor, the power battery, a strong current controller, a cathode main relay, an anode main relay and a pre-charge relay. According to the connection circuit, a delay relay is connected between a power pin of the strong current controller and an ON shift power line of a vehicle ignition lock, with the delay relay, positive and negative relays in a high-voltage loop cannot disconnect and close twice within 30 seconds, the danger of increase of the motor side voltage after disconnecting the circuit in the power generation process of the motor is eliminated, and simultaneously, the problem that overlarge reverse current occurs in the loop and ablates the anode and cathode main relays when the relay closes again within short time is solved.
Description
Technical field
The utility model relates to charging connection, refers to particularly the junction circuit of a kind of hybrid vehicle medium power battery and motor.
Background technology
At present, in hybrid vehicle, have a kind of high-tension current logic that powers on, for example when the electric machine controller terminal voltage be precharged to the electrokinetic cell terminal voltage 80% the time, then the positive and negative main relay of strong power controller control adhesive is finished high-tension current and is powered on.
But in the vehicle test process, the frequent ablation adhesion of positive and negative main relay.When existing hybrid vehicle medium power battery is analyzed to the junction circuit of motor, by voltage tester in the relay circuit before and after powering on is contrasted, find motor in power generation process, if disconnect electrokinetic cell to the junction circuit of motor, the voltage of motor side can sharply raise.If again power in the short time, because motor terminal voltage is much larger than 80% electrokinetic cell terminal voltage in the circuit, positive and negative main relay is walked around the direct adhesive of precharge, and the peak load of counter-current super positive and negative relay far away causes positive and negative relay ablation adhesion in the circuit.
Goal of the invention
The junction circuit that the purpose of this utility model provides a kind of hybrid vehicle medium power battery and motor with regard to being to overcome above-mentioned the deficiencies in the prior art, this junction circuit can postpone the power down time of strong power controller, and having avoided powers in a short time can cause the problem of positive and negative main relay ablation adhesion.
Realize that the technical scheme that the utility model purpose adopts is: the junction circuit between a kind of hybrid vehicle medium power battery and the motor, comprise: motor, be provided with the electric machine controller of precharge electric capacity, electrokinetic cell, and strong power controller, the negative pole main relay, anodal main relay and pre-charge-relay, three of described strong power controller control pins respectively with described negative pole main relay, anodal main relay is connected normally closed contact and is connected with pre-charge-relay, it also comprises: a slug relay, it is connected with automobile ignition lock ON shelves power lead, and the switch of this slug relay is connected between the battery feed line of the power pins of described strong power controller and automobile.
Further, described slug relay is 30 seconds slug relays.
The utility model in the junction circuit of motor, increases by 30 seconds delayeds relay at traditional hybrid vehicle medium power battery, makes in the high tension loop positive and negative relay can not disconnect adhesive by secondary in 30 seconds.Got rid of the electric power generation process and broken the danger that circuit rear motor terminal voltage raises, also solved relay in the short time simultaneously and again occurred the ablate problem of positive and negative main relay of excessive counter-current during adhesive in the loop.
Description of drawings
Fig. 1 is the junction circuit figure of existing hybrid vehicle medium power battery to motor;
Fig. 2 is that the utility model hybrid vehicle medium power battery is to the junction circuit figure of motor;
Among the figure, 1-motor, 2-electric machine controller, 3-precharge electric capacity, 4-negative pole main relay, the anodal main relay of 5-, 6-pre-charge-relay, the 7-electrokinetic cell, the 8-pre-charge resistance, 9-strong power controller, 10-automobile ignition lock ON shelves power lead, 11-automotive battery power lead, 12-30 slug relay's second.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, existing electrokinetic cell comprises motor 1, is provided with electric machine controller 2, electrokinetic cell 7 and strong power controller 9, negative pole main relay 4, anodal main relay 5 and the pre-charge-relay 6 of precharge electric capacity 3 to the junction circuit of motor in the hybrid vehicle.The power pins of strong power controller 9 is connected with automobile ignition lock ON shelves power lead.The first control pin of strong power controller 9 is connected with the normally closed contact of negative pole main relay 4, and the second control pin is connected with the normally closed contact of anodal main relay 5, and the 3rd control pin is connected with the normally closed contact of precharge main relay 6.The open contact of negative pole main relay 4 is connected with an end of precharge electric capacity 3, and the open contact that anodal main relay 5 is connected with pre-charge-relay all is connected with the other end of precharge electric capacity 3.
Use above-mentioned existing junction circuit, the high-tension current control process that powers on is as follows:
When ignition lock switch is got to the ON shelves, strong power controller 9 control pre-charge-relay 6 and 4 adhesives of negative pole main relay, current direction is electrokinetic cell 7, pre-charge resistance 8, pre-charge-relay 6, precharge electric capacity 3, negative pole main relay 4, electrokinetic cell 7, when precharge electric capacity 3 both end voltage U2 greater than the U1 both end voltage 80% the time, the anodal main relay 6 of strong power controller 9 control adhesives, disconnect simultaneously pre-charge-relay 6, high-tension current powers on and finishes.
When the motor 1 of automobile operates in generating operation mode, current direction is electric machine controller 2, anodal main relay 5, electrokinetic cell 7, negative pole main relay 4, electric machine controller 2, if automobile ignition lock ON shelves power lead 1 power down, electrokinetic cell 7 strong power controller 9 power supplys in motor 1 junction circuit disconnect, anodal main relay 5 then, negative pole main relay 4 gets an electric shock and disconnects, electric machine controller 2 interior precharge electric capacity 3 both end voltage U2 can sharply raise because of throw load, if ON shelves power lead 1 powers on again in 30 seconds, because of electric machine controller 2 interior precharge electric capacity 3 both end voltage U2 much larger than 80% of electrokinetic cell terminal voltage U1, positive main relay 5 and 4 adhesives of negative main relay.According to I=(U2-U1)/R, because resistance in the circuit is very little, I is very large, and the maximum load current of far super positive main relay 5 and negative main relay 4 causes positive main relay 5 and the 4 ablation adhesions of negative main relay.
The utility model is connected with 30 seconds slug relays 12 between the power pins of strong power controller and automobile ignition lock ON shelves power lead 10, the switch control by 30 seconds slug relays 12 between the power pins of automotive battery power lead 11 and strong power controller.If 1 power down of automobile ignition lock ON shelves power lead, because the power end of strong power controller 9 has 30 seconds relays of delay, strong power controller 9 postpones power down in 30 seconds, and same positive main relay 5 and negative main relay 4 control ends are because there being electricity, and relay contacts postpones disconnection in 30 seconds.At this moment, current direction continues in the loop, and because motor 1 no longer generates electricity, voltage is constantly absorbed by power battery 7 in the loop, is enough to make positive main relay 5 and negative main relay 4 both end voltage to reach balance in 30 seconds.If automobile ignition lock ON shelves power lead 1 powers on again in 30 seconds, positive main relay 5 and negative main relay 4 have been in attracting state, have avoided the phenomenon of secondary disconnection adhesive in 30 seconds.Power battery for hybrid electric vehicle based on delayed relay gets back in the rational scope working current of positive main relay 5 and negative main relay 4 to the motor junction circuit, and the life-span of positive and negative main relay is increased greatly.
Claims (2)
1. the junction circuit of a hybrid vehicle medium power battery and motor, comprise: motor, the electric machine controller that is provided with precharge electric capacity, electrokinetic cell and strong power controller, negative pole main relay, anodal main relay and pre-charge-relay, three of described strong power controller control pins are connected normally closed contact with described negative pole main relay, anodal main relay respectively and are connected with pre-charge-relay, it is characterized in that, also comprise:
One slug relay, it is connected with automobile ignition lock ON shelves power lead, and the switch of this slug relay is connected between the battery feed line of the power pins of described strong power controller and automobile.
2. the junction circuit of described hybrid vehicle medium power battery and motor according to claim 1, it is characterized in that: described slug relay is 30 seconds slug relays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204614174U CN202782643U (en) | 2012-09-11 | 2012-09-11 | Connection circuit of power battery and motor in hybrid electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204614174U CN202782643U (en) | 2012-09-11 | 2012-09-11 | Connection circuit of power battery and motor in hybrid electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202782643U true CN202782643U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204614174U Expired - Lifetime CN202782643U (en) | 2012-09-11 | 2012-09-11 | Connection circuit of power battery and motor in hybrid electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202782643U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104477043A (en) * | 2014-11-14 | 2015-04-01 | 中国北车集团大连机车车辆有限公司 | DC power source time-delay supply circuit of urban rail vehicle |
| CN106684482A (en) * | 2016-12-29 | 2017-05-17 | 深圳市沃特玛电池有限公司 | Battery overcharge protection system |
| CN112009245A (en) * | 2019-05-29 | 2020-12-01 | 北京新能源汽车股份有限公司 | Control method and device for electrifying electric automobile and automobile |
-
2012
- 2012-09-11 CN CN2012204614174U patent/CN202782643U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104477043A (en) * | 2014-11-14 | 2015-04-01 | 中国北车集团大连机车车辆有限公司 | DC power source time-delay supply circuit of urban rail vehicle |
| CN106684482A (en) * | 2016-12-29 | 2017-05-17 | 深圳市沃特玛电池有限公司 | Battery overcharge protection system |
| CN112009245A (en) * | 2019-05-29 | 2020-12-01 | 北京新能源汽车股份有限公司 | Control method and device for electrifying electric automobile and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
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| CX01 | Expiry of patent term |