CN206349750U - A kind of circuit for eliminating electric automobile DC charging motor inrush current - Google Patents
A kind of circuit for eliminating electric automobile DC charging motor inrush current Download PDFInfo
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- CN206349750U CN206349750U CN201621439162.6U CN201621439162U CN206349750U CN 206349750 U CN206349750 U CN 206349750U CN 201621439162 U CN201621439162 U CN 201621439162U CN 206349750 U CN206349750 U CN 206349750U
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Abstract
The utility model discloses a kind of circuit for eliminating electric automobile DC charging motor inrush current, it includes voltage control module, the first gate-controlled switch, the second gate-controlled switch, diode, charge control module and current sample module；Charge control module connects power module outlet by voltage control module；Power module outlet positive pole passes through the first gate-controlled switch, current sample module and the second gate-controlled switch connecting electric automobile battery；Diode is in parallel with the first gate-controlled switch.When system, which starts, to charge the battery, charge control module closes the second gate-controlled switch and controls power module to be slowly increased output voltage by voltage control module.When power module output voltage is more than cell voltage, the first gate-controlled switch closure.This programme avoids the first gate-controlled switch and the second gate-controlled switch and inhaled and the cell voltage anti-dash current for filling dash current that power module causes or electric power source pair of module battery during moment.This programme is applied to all electric automobile battery chargers.
Description
Technical field
The utility model is related to charging electric vehicle field, and eliminating electric automobile DC charging motor more particularly, to one kind opens
The circuit of dynamic dash current.
Background technology
The today being rooted in the hearts of the people in the idea of green energy resource, energy-saving and emission-reduction, the technological change of energy source of car dynamical system is
Through focus and core as automotive technology development, electric automobile is used as new energy strategy and the important composition portion of intelligent grid
Point, the emphasis of automobile industry development from now on will be turned into, but ev industry is a system engineering, charging electric vehicle
System is then one of key link.
There is each of electric automobile parking stall applied to highway, station terminal, shopping square, electric power place of business etc.
The DC charging motor for planting occasion all relies on the characteristics of its charging rate is fast, and the fast essence of charging rate is that charging current is big, still
The dash current control that the startup of the high voltage output module of high current can be exported is extremely important, is made because batteries of electric automobile is instead filled
Into dash current and the dash current of positive electric power source pair of module battery can not only damage High voltage output contactor but also to electronic
Automobile batteries also has damage.
The content of the invention
The utility model is mainly the skill that the dash current solved present in prior art easily causes damage etc. to equipment
There is provided the circuit that a kind of protection equipment eliminates electric automobile DC charging motor inrush current for art problem.
The utility model is mainly what is be addressed by following technical proposals for above-mentioned technical problem：One kind eliminates electricity
The circuit of electrical automobile DC charging motor inrush current, including voltage control module, the first gate-controlled switch, second controllable open
Pass, diode, charge control module and current sample module；Charge control module connects power module by voltage control module
Output end；The first tip side connection power module outlet positive pole of first gate-controlled switch, the second of the first gate-controlled switch
Tip side connects the first end of current sample module, and the input of the second end connecting electric automobile battery of current sample module is rectified
Pole, the signal output part connection charge control module of current sample module；The first tip side connection power supply of second gate-controlled switch
The negative pole of output end of module, the input cathode of the second tip side connecting electric automobile battery of the second gate-controlled switch；Diode
Positive pole connect the first tip side of the first gate-controlled switch, the negative pole of diode connects the second tip side of the first gate-controlled switch；
The control end of first gate-controlled switch and the second gate-controlled switch is all connected to charge control module.
When system, which starts, to charge the battery, charge control module judges that power module is connected and electricity with batteries of electric automobile
The second gate-controlled switch of control closure after electrical automobile battery is ready, charge control module controls power supply by voltage control module
Module is slowly increased output voltage.When power module output voltage is more than cell voltage, diode current flow is given with 2A electric current
Battery charges, and current sample module collection current signal feeds back to charge control module.Now charge control module control first
Gate-controlled switch is closed, and the output current of ladder increase power module is to BMS demand currents.This programme avoids the first gate-controlled switch
Inhaled with the second gate-controlled switch and cell voltage anti-dash current that power module causes or the electric power source pair of module battery of filling during moment
Dash current.
Claimed this programme is a kind of circuit structure, to the basis as above-mentioned control process.
Preferably, eliminating the circuit of electric automobile DC charging motor inrush current also includes voltage sample module,
The input anode of the first end connecting electric automobile battery of the voltage sample module, the second end connection of voltage sample module
The input cathode of batteries of electric automobile, the signal output part connection charge control module of voltage sample module.
Voltage sample module gather battery both end voltage so that accurately control power module output voltage adjustment process with
And first gate-controlled switch closure opportunity.
Preferably, eliminating the circuit of electric automobile DC charging motor inrush current also includes first fuse and the
Two fuses, the first fuse be serially connected in current sample module the second end and batteries of electric automobile input anode it
Between, second fuse is serially connected between the second tip side of the second gate-controlled switch and the input cathode of batteries of electric automobile.
When charging current is excessive, fuse blows, effective protection circuit equipment.
Preferably, the first gate-controlled switch and the second gate-controlled switch are all contactor.
Contactor can realize the control to high current under low current, and reliability is high, is swift in response.
The beneficial effect that the utility model is brought has been to provide a kind of circuit, is used as elimination electric automobile DC charging motor
The basis of the dash current on both sides during startup, it is to avoid damage is caused to switch, power module and battery bag, and then plays protection opening
Pass, power module and battery bag, the effect in extension device life-span.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model；
In figure：1st, voltage control module；2nd, charge control module；3rd, current sample module；4th, voltage sample module；5th, it is electric
Source module；6th, battery.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment：The circuit of a kind of elimination electric automobile DC charging motor inrush current of the present embodiment, such as Fig. 1 institutes
Show, including voltage control module 1, the first gate-controlled switch K1, the second gate-controlled switch K2, diode D1, charge control module 2 and electricity
Flow sampling module 3；Charge control module connects the output end of power module 5 by voltage control module；First gate-controlled switch
The first tip side connection power module outlet positive pole, the second tip side connection current sample module of the first gate-controlled switch
First end, the input anode of the battery 6 of the second end connecting electric automobile of current sample module, the signal of current sample module
Output end connects charge control module；First tip side of the second gate-controlled switch connects the negative pole of output end of power module, second
The input cathode of the battery of second tip side connecting electric automobile of gate-controlled switch；The positive pole connection first of diode is controllable to open
The first tip side closed, the negative pole of diode connects the second tip side of the first gate-controlled switch；First gate-controlled switch and second can
The control end of control switch is all connected to charge control module.
Claimed this programme is a kind of circuit structure, to the basis as above-mentioned control process.
Eliminating the circuit of electric automobile DC charging motor inrush current also includes voltage sample module 4, the voltage
The input anode of the first end connecting electric automobile battery of sampling module, the second end connecting electric automobile of voltage sample module
The input cathode of battery, the signal output part connection charge control module of voltage sample module.
Voltage sample module gather battery both end voltage so that accurately control power module output voltage adjustment process with
And first gate-controlled switch closure opportunity.
Eliminating the circuit of electric automobile DC charging motor inrush current also includes the fusing of first fuse F1 and second
Device F2, the first fuse is serially connected between the second end of current sample module and the input anode of batteries of electric automobile,
Second fuse is serially connected between the second tip side of the second gate-controlled switch and the input cathode of batteries of electric automobile.
When charging current is excessive, fuse blows, effective protection circuit equipment.
First gate-controlled switch and the second gate-controlled switch are all contactor.
Contactor can realize the control to high current under low current, and reliability is high, is swift in response.
When vehicle plug inserts the vehicle socket of electric automobile, with the electricity for receiving electric automobile after charger confirms connection
Before " battery charge ready state " that pond management system is sent is ready, because electric automobile is used as second switch
Contactor K5 and K6 are not closed, and the contactor K1 and K2 in charger are not also closed, and DC+ and DC- terminal voltage should
It is 0, or voltage very low induced voltage.If higher than 24V (preferred value), it is likely that be the contactor or electric automobile of charger
Contactor have a bonding phenomenon, report contactor bonds failure.In charger control system and the battery management system of electric vehicle
Completion is shaken hands with after configurator, and battery management system can close the contactor K5 and K6 of electric automobile, make DC+ and DC- connections
Onto the battery bag of electric automobile, according to electric automobile model and the difference of depth of discharge, the voltage of battery bag be it is different,
Typically no less than 200V, because the rated output voltage of general battery charger module is 750V, if now directly closing charger
Contactor K1 and K2 after, it will have larger dash current.The way of this programme be charger control module detect K5 and
K6 is inhaled with after, then K2 is closed, while the output voltage of regulation power supply module so that the output voltage of power module is slightly above battery
The contactor K1 of charger is closed again after the voltage of bag, the output current for detecting power module, charging starts, charger according to
The requirement of the battery management system of electric vehicle provides corresponding voltage and current and charged for battery bag.
Specific embodiment described herein is only to the invention spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode substitute, but without departing from principle of the present utility model or surmount scope defined in appended claims.
Although more having used the terms such as power module, voltage control module, diode herein, it is not precluded from using
The possibility of other terms.It is used for the purpose of more easily describing and explaining essence of the present utility model using these terms；
They are construed to any additional limitation and all disagreed with the invention spirit.
Claims (4)
1. a kind of circuit for eliminating electric automobile DC charging motor inrush current, it is characterised in that control mould including voltage
Block, the first gate-controlled switch, the second gate-controlled switch, diode, charge control module and current sample module；Charge control module is led to
Excess voltage control module connects power module outlet；The first tip side connection power module output of first gate-controlled switch
Rectify pole, the second tip side of the first gate-controlled switch connects the first end of current sample module, the second end of current sample module
The input anode of connecting electric automobile battery, the signal output part connection charge control module of current sample module；Second can
First tip side of control switch connects the negative pole of output end of power module, and the second tip side of the second gate-controlled switch connects electronic vapour
The input cathode of car battery；The positive pole of diode connects the first tip side of the first gate-controlled switch, the negative pole connection of diode
Second tip side of the first gate-controlled switch；The control end of first gate-controlled switch and the second gate-controlled switch is all connected to charge control mould
Block.
2. a kind of circuit for eliminating electric automobile DC charging motor inrush current according to claim 1, its feature
It is, in addition to voltage sample module, the input anode of the first end connecting electric automobile battery of the voltage sample module,
The input cathode of second end connecting electric automobile battery of voltage sample module, the signal output part connection of voltage sample module
Charge control module.
3. a kind of circuit for eliminating electric automobile DC charging motor inrush current according to claim 1 or 2, it is special
Levy and be, in addition to first fuse and second fuse, the first fuse is serially connected in the second end of current sample module
Between the input anode of batteries of electric automobile, second fuse is serially connected in the second tip side of the second gate-controlled switch and electronic
Between the input cathode of automobile batteries.
4. a kind of circuit for eliminating electric automobile DC charging motor inrush current according to claim 3, its feature
It is, the first gate-controlled switch and the second gate-controlled switch are all contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621439162.6U CN206349750U (en) | 2016-12-26 | 2016-12-26 | A kind of circuit for eliminating electric automobile DC charging motor inrush current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621439162.6U CN206349750U (en) | 2016-12-26 | 2016-12-26 | A kind of circuit for eliminating electric automobile DC charging motor inrush current |
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| CN206349750U true CN206349750U (en) | 2017-07-21 |
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| CN201621439162.6U Active CN206349750U (en) | 2016-12-26 | 2016-12-26 | A kind of circuit for eliminating electric automobile DC charging motor inrush current |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039743A (en) * | 2017-11-17 | 2018-05-15 | 蔚来汽车有限公司 | Charging station and charging system, method, apparatus |
| CN108215912A (en) * | 2018-01-24 | 2018-06-29 | 安徽锐能科技有限公司 | For the control circuit and control system of electric vehicle |
| CN109510253A (en) * | 2017-09-15 | 2019-03-22 | 保时捷股份公司 | Protection circuit for charging unit |
| CN110277924A (en) * | 2019-07-03 | 2019-09-24 | 上海鼎充新能源技术有限公司 | A kind of economical isolated high-voltage DC switching circuit |
| CN110481379A (en) * | 2019-05-15 | 2019-11-22 | 苏州工业园区和顺电气股份有限公司 | Stable type intelligent charging machine |
| CN111152682A (en) * | 2019-12-24 | 2020-05-15 | 宁波三星智能电气有限公司 | Control method for preventing starting current impact of charging pile |
| CN112769175A (en) * | 2020-12-28 | 2021-05-07 | 山东鲁能软件技术有限公司智能电气分公司 | Control method and system for reducing impact current of charging pile |
-
2016
- 2016-12-26 CN CN201621439162.6U patent/CN206349750U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510253A (en) * | 2017-09-15 | 2019-03-22 | 保时捷股份公司 | Protection circuit for charging unit |
| CN108039743A (en) * | 2017-11-17 | 2018-05-15 | 蔚来汽车有限公司 | Charging station and charging system, method, apparatus |
| WO2019096091A1 (en) * | 2017-11-17 | 2019-05-23 | 蔚来汽车有限公司 | Charging station and charging system, method and apparatus |
| CN108039743B (en) * | 2017-11-17 | 2021-07-23 | 蔚来(安徽)控股有限公司 | Charging station and charging system, method and device |
| CN108215912A (en) * | 2018-01-24 | 2018-06-29 | 安徽锐能科技有限公司 | For the control circuit and control system of electric vehicle |
| CN108215912B (en) * | 2018-01-24 | 2024-05-14 | 安徽锐能科技有限公司 | Control circuit and control system for electric automobile |
| CN110481379A (en) * | 2019-05-15 | 2019-11-22 | 苏州工业园区和顺电气股份有限公司 | Stable type intelligent charging machine |
| CN110481379B (en) * | 2019-05-15 | 2024-03-12 | 苏州工业园区和顺电气股份有限公司 | Stable intelligent charger |
| CN110277924A (en) * | 2019-07-03 | 2019-09-24 | 上海鼎充新能源技术有限公司 | A kind of economical isolated high-voltage DC switching circuit |
| CN111152682A (en) * | 2019-12-24 | 2020-05-15 | 宁波三星智能电气有限公司 | Control method for preventing starting current impact of charging pile |
| CN112769175A (en) * | 2020-12-28 | 2021-05-07 | 山东鲁能软件技术有限公司智能电气分公司 | Control method and system for reducing impact current of charging pile |
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