CN105353319B - Electric vehicle pre-charging completion status detection device based on passive isolation - Google Patents
Electric vehicle pre-charging completion status detection device based on passive isolation Download PDFInfo
- Publication number
- CN105353319B CN105353319B CN201510840836.7A CN201510840836A CN105353319B CN 105353319 B CN105353319 B CN 105353319B CN 201510840836 A CN201510840836 A CN 201510840836A CN 105353319 B CN105353319 B CN 105353319B
- Authority
- CN
- China
- Prior art keywords
- connect
- photoelectrical coupler
- electric vehicle
- output terminal
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of electric vehicle pre-charging completion status detection devices based on passive isolation, and including photoelectrical coupler, the light emitting diode anode of photoelectrical coupler connect with zener diode anode and passes through resistance and connect with NMOS tube grid；Zener diode cathode is connect with diode cathode, and diode cathode is connect with the first connector；The light emitting diode cathode of photoelectrical coupler is connected with NMOS tube drain electrode, and NMOS tube grid is connect with three-terminal voltage-stabilizing pipe input terminal, and three-terminal voltage-stabilizing pipe output terminal and the second connector are electrically connected；The source electrode of NMOS tube is connect by resistance with three-terminal voltage-stabilizing pipe output terminal；The illuminated triode output terminal of photoelectrical coupler is used to connect with the battery management system signal input part of electric vehicle.The invention has the advantages that simple and effective circuit design is taken to realize that pure electric automobile is pre-charged the judgement of completion status, and of low cost, easy to maintain, the security reliability of vehicle-mounted power distribution network is effectively raised.
Description
Technical field
The present invention relates to electric vehicle pre-charging completion status detection device, more particularly, to based on the electronic of passive isolation
Automobile is pre-charged completion status detection device.
Background technology
Drive motor controller used in electric vehicle, DC/DC converters, charger, steering motor controller and
Air conditioner compressed machine controller etc., hardware design mostly carry out energy storage filter using the capacitance that large capacity is added in high input voltage unit
Wave, it is therefore desirable to pre-charge resistance is added in vehicle-mounted power distribution network, rush of current is powered on to mitigate, reaches protection driving motor
Controller purpose.In current electric vehicle design, the judgement for being pre-charged completion status is taken by DC/DC isolation modules, fortune more
Calculate amplifier, the circuit of the compositions such as signal isolation module detects the voltage of on-board high-voltage power battery output terminal, and by its with
On-board high-voltage power battery total voltage is compared, and is assert that precharge is completed if comparison result is more than zero, is connected vehicle-mounted height
The positive contactor of master of pressure power battery pre-charging control loop cuts off preliminary filling electrical circuit.Although this method is effective, made
The circuit designs costs such as DC/DC isolation modules, operational amplifier, signal isolation module are higher, and the circuit is only powering on
When use, cause the waste of resource.
Invention content
Present invention aims at provide a kind of electric vehicle pre-charging completion status detection device based on passive isolation.
To achieve the above object, the present invention takes following technical proposals：
Electric vehicle pre-charging completion status detection device of the present invention based on passive isolation, including photoelectric coupling
Device, the light emitting diode anode of the photoelectrical coupler connect with the anode of zener diode DZ1 and pass through resistance R1 and high pressure
The grid connection of NMOS tube Q1；The cathode of the zener diode DZ1 is connect with the cathode of diode D1, the diode D1's
Anode and the first connector are electrically connected；The light emitting diode cathode of photoelectrical coupler and the drain electrode of the high pressure NMOS pipe Q1 connect
It connects, the grid of high pressure NMOS pipe Q1 is connect with the input terminal of the cathode of zener diode DZ2 and three-terminal voltage-stabilizing pipe, the voltage stabilizing two
The anode of pole pipe DZ2 and the electrical connection of the output terminal of three-terminal voltage-stabilizing pipe and the second connector；The source electrode of high pressure NMOS pipe Q1 passes through
Resistance R2 is connect with the output terminal of three-terminal voltage-stabilizing pipe；The ground terminal of three-terminal voltage-stabilizing pipe is connect with the source electrode of high pressure NMOS pipe Q1；Light
The illuminated triode output terminal of electric coupler is used to connect with the battery management system signal input part of electric vehicle.
The invention has the advantages that simple and effective circuit design is taken to realize sentencing for pure electric automobile precharge completion status
It is disconnected, and of low cost, easy to maintain, the security reliability of vehicle-mounted power distribution network is effectively raised, reaches reduction electric vehicle
Power-on impact current, protection drive motor controller purpose.
Description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Fig. 2 is the battery pack of existing electric vehicle and the circuit diagram of high voltage distribution box.
Specific embodiment
As shown in Figure 1, the electric vehicle pre-charging completion status detection device of the present invention based on passive isolation, including
Photoelectrical coupler 1, the light emitting diode anode of photoelectrical coupler 1 connect with the anode of zener diode DZ1 and pass through resistance R1
It is connect with the grid of high pressure NMOS pipe Q1；The cathode of zener diode DZ1 is connect with the cathode of diode D1, and diode D1 is just
Pole is electrically connected with the first connector 3；The light emitting diode cathode of photoelectrical coupler 1 and the drain electrode of the high pressure NMOS pipe Q1 connect
It connects, the grid of high pressure NMOS pipe Q1 is connect with the input terminal of the cathode of zener diode DZ2 and three-terminal voltage-stabilizing pipe 2, two pole of voltage stabilizing
The anode of pipe DZ2 and the output terminal of three-terminal voltage-stabilizing pipe 2 are electrically connected with the second connector 4；The source electrode of high pressure NMOS pipe Q1 passes through
Resistance R2 is connect with the output terminal of three-terminal voltage-stabilizing pipe 2；The illuminated triode output terminal of photoelectrical coupler 1 is used for and electric vehicle
Battery management system signal input part connects.
Operation principle of the present invention is summarized as follows：
As shown in Figure 1, 2, during work, first by the first connector 3, the second connector 4 respectively with the battery of electric vehicle
2 points of electrical connections of A, B in packet circuit 5, by the illuminated triode output terminal of photoelectrical coupler 1 and the BMS of electric vehicle（Electricity
Pond manages system）Signal input part connects.Contactor inside the high voltage distribution box 6 of electric vehicle is acted by VCU（Full-vehicle control
Device）It directly controls, the contactor inside battery pack is by BMS（Battery management system）Control.
When pre-charge resistance R2 both end voltages are higher than 20 volts, photoelectrical coupler 1 is connected, and outputs signal to electric vehicle
BMS, for judging that on-board high-voltage power battery E precharge does not complete.
When pre-charge resistance R2 both end voltages are less than 20 volts, photoelectrical coupler 1 is not turned on, and is exported without signal to electronic
The BMS of automobile, for judging that on-board high-voltage power battery E precharge is completed.
When pre-charge resistance R2 both end voltages be higher than 20 volts when, the electric current for flowing through photoelectrical coupler 1 is constant, equal to 2.5 volts/
The resistance value of resistance R2.
When circuit of the present invention is by misconnection inverse time, diode D1 cut-offs play a protective role.By detecting photoelectrical coupler 1
It is conducting to the process of cut-off, you can judge whether on-board high-voltage power battery E is pre-charged completion.Zener diode DZ1 is used to adjust
Threshold voltage is saved, zener diode DZ2 is used to protect high pressure NMOS pipe Q1.
Particularly electric current journey is：VCU first controls the associated contact device inside high voltage distribution box 6 to connect（K is that driving motor connects
It is warm-air drier contactor, K7 be the contactor of DC/DC, K8 is pre-charge contactor that tentaculum, K5, which are compressor contactor, K6,）；So
Normally opened contact j1, j2 of BMS control contactors K1, K2 are closed afterwards, after BMS detects that the voltage of A, B point-to-point transmission is less than 20 volts,
The normally opened contact j3 of BMS control contactors K3 is closed.At this point, BMS sends out pre-charge process completion status to VCU.
Claims (1)
1. a kind of electric vehicle pre-charging completion status detection device based on passive isolation, it is characterised in that：Including photoelectricity coupling
Clutch（1）, the photoelectrical coupler（1）Light emitting diode anode connect with the anode of zener diode DZ1 and pass through resistance
R1 is connect with the grid of high pressure NMOS pipe Q1；The cathode of the zener diode DZ1 is connect with the cathode of diode D1, and described two
The anode of pole pipe D1 and the first connector（3）Electrical connection；Photoelectrical coupler（1）Light emitting diode cathode and the high pressure
The drain electrode connection of NMOS tube Q1, the grid of high pressure NMOS pipe Q1 and the cathode of zener diode DZ2 and three-terminal voltage-stabilizing pipe（2）It is defeated
Enter end connection, the anode of the zener diode DZ2 and three-terminal voltage-stabilizing pipe（2）Output terminal and the second connector（4）Electrically connect
It connects；The source electrode of high pressure NMOS pipe Q1 passes through resistance R2 and three-terminal voltage-stabilizing pipe（2）Output terminal connection；Three-terminal voltage-stabilizing pipe（2）Connect
Ground terminal is connect with the source electrode of high pressure NMOS pipe Q1；Photoelectrical coupler（1）Illuminated triode output terminal be used for and electric vehicle
Battery management system signal input part connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510840836.7A CN105353319B (en) | 2015-11-27 | 2015-11-27 | Electric vehicle pre-charging completion status detection device based on passive isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510840836.7A CN105353319B (en) | 2015-11-27 | 2015-11-27 | Electric vehicle pre-charging completion status detection device based on passive isolation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105353319A CN105353319A (en) | 2016-02-24 |
| CN105353319B true CN105353319B (en) | 2018-06-15 |
Family
ID=55329320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510840836.7A Active CN105353319B (en) | 2015-11-27 | 2015-11-27 | Electric vehicle pre-charging completion status detection device based on passive isolation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105353319B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787635A (en) * | 2017-01-06 | 2017-05-31 | 四川埃姆克伺服科技有限公司 | A kind of active clamped protection circuit for IGBT controls |
| CN110048680B (en) * | 2019-05-16 | 2021-09-14 | 武汉大学 | Low-dropout high-power composite PMOS (P-channel metal oxide semiconductor) tube equivalent circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731207A (en) * | 2005-08-25 | 2006-02-08 | 上海交通大学 | Passive isolation accumulator voltage monitoring circuit |
| CN2935619Y (en) * | 2006-04-25 | 2007-08-15 | 深圳市中传电气技术有限公司 | Precharging circuit protection device of intelligent middle, high-voltage large power frequency converter |
| CN201805353U (en) * | 2010-08-30 | 2011-04-20 | 天津市松正电动科技有限公司 | Pre-charged control circuit |
| CN202084968U (en) * | 2011-06-20 | 2011-12-21 | 上海恒动汽车电池有限公司 | Precharge circuit of power battery |
| CN203025235U (en) * | 2012-11-21 | 2013-06-26 | 上海富欣智能交通控制有限公司 | Voltage state detection circuit of output channel |
| CN205263276U (en) * | 2015-11-27 | 2016-05-25 | 郑州日产汽车有限公司 | Electric automobile precharge completion status detection device based on passive isolation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008301612A (en) * | 2007-05-31 | 2008-12-11 | Sanyo Electric Co Ltd | Power supply device for vehicle, and contactor welding detecting method for the same |
| JP2013219955A (en) * | 2012-04-10 | 2013-10-24 | Hitachi Vehicle Energy Ltd | Power supply device |
-
2015
- 2015-11-27 CN CN201510840836.7A patent/CN105353319B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731207A (en) * | 2005-08-25 | 2006-02-08 | 上海交通大学 | Passive isolation accumulator voltage monitoring circuit |
| CN2935619Y (en) * | 2006-04-25 | 2007-08-15 | 深圳市中传电气技术有限公司 | Precharging circuit protection device of intelligent middle, high-voltage large power frequency converter |
| CN201805353U (en) * | 2010-08-30 | 2011-04-20 | 天津市松正电动科技有限公司 | Pre-charged control circuit |
| CN202084968U (en) * | 2011-06-20 | 2011-12-21 | 上海恒动汽车电池有限公司 | Precharge circuit of power battery |
| CN203025235U (en) * | 2012-11-21 | 2013-06-26 | 上海富欣智能交通控制有限公司 | Voltage state detection circuit of output channel |
| CN205263276U (en) * | 2015-11-27 | 2016-05-25 | 郑州日产汽车有限公司 | Electric automobile precharge completion status detection device based on passive isolation |
Non-Patent Citations (1)
| Title |
|---|
| 一种蓄电池电压的无源隔离监测方法;黄俊 等;《电工电能新技术》;20111031;第30卷(第4期);第13-16，25页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105353319A (en) | 2016-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204557082U (en) | Pure electric vehicle controller power waken system and power supply wake-up circuit | |
| CN101330225B (en) | Apparatus for monitoring high voltage output of power battery | |
| CN101722859A (en) | High-voltage safety system of hybrid electric vehicle | |
| CN204077389U (en) | Power brick high-voltage interlocking circuit system | |
| CN104129316B (en) | The power cell of a kind of integrated high voltage protector | |
| CN205736978U (en) | Electric installation under a kind of car load time delay | |
| CN103328253B (en) | The charging system with two-way charge controller charging for automobile batteries | |
| CN103779622A (en) | Power supply management method of power battery pack | |
| CN108215802A (en) | Electric drive special vehicle multi-functional integrated type 900V power distribution protective devices | |
| CN204978274U (en) | Pure electric vehicles high voltage power distribution box | |
| CN105353319B (en) | Electric vehicle pre-charging completion status detection device based on passive isolation | |
| CN203713584U (en) | Battery cut-off unit of power battery pack | |
| CN203211116U (en) | Collision self-outage control system of power battery of electric automobile | |
| CN106740575A (en) | Integrated new-energy automobile high voltage distribution box with CAN signal feedback | |
| CN103434411A (en) | On-line charging type electrombile brake energy recovering system | |
| CN206059545U (en) | A kind of electric motor car lithium ion power power supply | |
| CN206012358U (en) | A kind of battery of electric vehicle bag switching control | |
| CN202518115U (en) | Low-voltage power supply for electric vehicle | |
| CN107069902A (en) | power supply circuit for battery management system | |
| CN205263276U (en) | Electric automobile precharge completion status detection device based on passive isolation | |
| CN203398769U (en) | Battery reverse-connection resistant protective circuit of direct current charging pile controller | |
| CN203666410U (en) | High voltage system protection device for hybrid power electric vehicle | |
| CN205489578U (en) | Prevent anti - discharge circuit of irritating of battery voltage | |
| CN107364351A (en) | A kind of heavily loaded electrically propelled traction vehicle high-pressure system | |
| CN203135504U (en) | Battery management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 181 Jianshe South Road, Zhongmou County, Zhengzhou City, Henan Province 450016 Patentee after: Zhengzhou Nissan Automotive Co., Ltd. Address before: 450016 No. eighth, 369 East Road, Zhengzhou economic and Technological Development Zone, Henan, China Patentee before: Zhengzhou Nissan Automotive Co., Ltd. |