CN206657072U - Direct-current charging interface of electric automobile connection status test circuit - Google Patents
Direct-current charging interface of electric automobile connection status test circuit Download PDFInfo
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- CN206657072U CN206657072U CN201720194704.6U CN201720194704U CN206657072U CN 206657072 U CN206657072 U CN 206657072U CN 201720194704 U CN201720194704 U CN 201720194704U CN 206657072 U CN206657072 U CN 206657072U
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
It the utility model is related to a kind of direct-current charging interface of electric automobile connection status test circuit, including analog charge rifle test circuit and simulating vehicle socket test circuit two parts.Solve the problems, such as that pin connects direct-current charging interface in actual applications,, can be by being attached test respectively to charging gun and vehicle socket, so that it is determined that where problem when charging inlet connection failure, and then solving problem, the maintenance for direct-current charging interface is significant.
Description
Technical field
The utility model belongs to charging electric vehicle testing field, is related to the test of direct-current charging interface connection status, especially
It is a kind of direct-current charging interface of electric automobile connection status test circuit.
Background technology
Risen so far from electric automobile industry, the research of its key technology is advanced by leaps and bounds, but there has been no the skill of complete set
One of art requirement and technology for detection system, Development of EV technology, its key technology are charging electric vehicle facility technologies
Research.The preliminary specification connection request of electric car conduction formula charging inlet in four new national standards that China is put into effect, and it is right
In charging inlet connecting test, there has been no clear and definite code requirement and corresponding test device.Due to electric vehicle charge interface
Connection reliability is related to the safe and stable of charging process, therefore the method for testing of the switching performance for charging inlet, and
The research of corresponding test device is very necessary.
The meaning of charging electric vehicle facility is studied, is that the application in terms of large-scale centralized electric charging station is ground to a greater extent
Study carefully.The direct-current charging interface of charging is carried out to electric automobile in charging station is concentrated, i.e. charging gun and charging electric vehicle is inserted
Connecting interface between seat, typical direct-current charging interface pin connection diagram is as shown in figure 1, the company of charging gun and charging socket
Connect pin totally 9, be followed successively by from 1 to 9 the positive and negative pin of dc source, protective grounding pin, charging order wire low and high level pin,
Charging connection confirms line 1 and 2, the positive and negative pin of accessory power supply.Upper pull-up voltage U1、U2For 12V, each resistance is 1000 Ω.Connect in vehicle
After mouth is fully connected, the voltage of test point 1 is 4V, if charger completes self-test fault-free, closes contactor K3 and K4, conducting
Low pressure auxiliary power supply loop, start simultaneously at cycle transmission charger identification message.The voltage that controller of vehicle passes through test point 2
Value judges the connection status of vehicle interface, starts cycle transmission wagon control if the magnitude of voltage of test point 2 is 6V controller of vehicle
Device (or battery management system) recognizes message.Controller of vehicle and charger are completed to shake hands and with postponing, wagon control fills
Put closure contactor K5 and K6, charger control device closure K1 and K2, conducting direct current current supply circuit.One pin of any of which
Not connected success can not all be charged, and have the connection confirmation signal line of interface in the pin of charging inlet, it is ensured that charged
Journey is carried out after interface successful connection.
Utility model content
The purpose of this utility model is in place of overcome the deficiencies in the prior art, there is provided a kind of electric automobile DC charging connects
Mouth connection status test circuit, and then judge whether the internal components of charging gun pin or connection charging gun pin are qualified；Judge
Whether vehicle socket pins, or the internal components of connection vehicle socket pins are qualified.
Technical scheme is used by the utility model solves technical problem：
A kind of direct-current charging interface of electric automobile connection status test circuit, including analog charge rifle test circuit and simulation
Vehicle socket test circuit two parts.
Described analog charge rifle test circuit, including 9 pin interfaces one-to-one with vehicle socket, pin 1 are logical
Cross single-pole double-throw switch (SPDT) S1It is connected with bilateral diode, bilateral diode series capacitance C1, electric capacity C1Pin 2 is connected, pin 3 is gone here and there
Join a single-pole double-throw switch (SPDT) S2, S2Switch 1 be grounded, S2Switch 2 be sequentially connected in series ammeter A, resistance Rd, voltage source U1And
Vehicle body, pin 4 is connected with pin 5 by imitating charger communication ends of connecting, and pin 6 connects resistance R1With voltage source U2Series connection
It is grounded the branch road formed, resistance R2With the branch circuit parallel connection, pin 7 and resistance R3Series connection ground connection, pin 8 are connected one pair with pin 9
Double-pole double throw switch S4, S4Switch 1 pass through single-pole double-throw switch (SPDT) S3Meet bilateral diode and series capacitance C2With S4Switch 2 formed
Loop；Work as S4During in another state, 1' series electrical potential sources U is switched3, voltage source U4It is connected with switch 2', wherein U1=5V, U2
=U3=U4=12V, Rd=5 Ω, R1=R2=R3=1000 Ω, the voltage/current of each pin is test result output end.
Described simulating vehicle socket test circuit, including 9 pin interfaces one-to-one with charging gun, pin 1 are gone here and there
Join voltage source U12Loop, one single-pole double-throw switch (SPDT) S of the series connection of pin 3 are formed with pin 25, S5Switch 1 successively with resistance Rq, electricity
Flow table A and voltage source U5Series connection ground connection, S5Switch 2 be directly connected with vehicle body earth terminal, pin 4 and pin 5 pass through simulation of connecting
Battery communication ends are connected, the series resistance R of pin 65With connecting vehicle body, pin 7 connects resistance R6With voltage source U6Series connection vehicle body landform
Into circuit, the series electrical potential source U of pin 889Loop, wherein U are formed with pin 95=5V, U6=12V, Rq=5 Ω, R5=R6=
1000 Ω, the voltage/current of each pin is test result output end.
The advantages of the utility model and good effect are：
1st, the circuit design of this simulating vehicle DC charging socket and analog charge rifle, tested draw is judged according to test result
The connection situation of pin, while boost voltage level can be measured, to meet the application of test direct-current charging interface of electric automobile connection
Technical need.
2nd, the utility model solves the problems, such as that pin connects direct-current charging interface in actual applications, and its application value exists
In：, can be by being attached test respectively to charging gun and vehicle socket, so that it is determined that problem when charging inlet connection failure
Place, and then solve problem.Maintenance for direct-current charging interface is significant.
Brief description of the drawings
Fig. 1 is typical DC charging inlet pin connection diagram；
Fig. 2 is that analog charge rifle tests vehicle socket circuit figure；
Fig. 3 is that simulating vehicle socket tests charging gun circuit diagram.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in further detail by specific embodiment, and following examples are simply retouched
The property stated, be not limited, it is impossible to limit the scope of protection of the utility model with this.
A kind of direct-current charging interface of electric automobile connection status test circuit, including analog charge rifle test circuit and simulation
Vehicle socket test circuit two parts.
Described analog charge rifle test circuit, as shown in Fig. 2 being connect including 9 pins one-to-one with vehicle socket
Mouthful, pin 1 passes through single-pole double-throw switch (SPDT) S1It is connected with bilateral diode, bilateral diode series capacitance C1, electric capacity C1Connect pin
2.One single-pole double-throw switch (SPDT) S of the series connection of pin 32, S2Switch 1 be grounded, S2Switch 2 be sequentially connected in series ammeter A, resistance Rd, electricity
Potential source U1And vehicle body ground (vehicle body earth terminal).Pin 4 is connected with pin 5 by imitating charger communication ends of connecting.Analog charge
Machine communication ends are existing module.Pin 6 connects resistance R1With voltage source U2The branch road formed to series connection, resistance R2With the branch road
Parallel connection, pin 7 and resistance R3Series connection ground connection.Pin 8 is connected a double-point double-throw switch S with pin 94。S4Switch 1 pass through list
Double-pole double throw switch S3Meet bilateral diode and series capacitance C2With S4Switch 2 formed loop；Work as S4During in another state,
Switch 1' series electrical potential sources U3, voltage source U4It is connected with switch 2'.
Wherein U1=5V, U2=U3=U4=12V, Rd=5 Ω, R1=R2=R3The voltage/current of each pins of=1000 Ω
For test result output end.The testing sequence of each pin is followed successively by protective grounding, charging connection confirms the connection of 1, accessory power supply, control
System connection confirms 2, communication connection, dc source connection.Its detailed description is as follows：
(1) first before testing by S1Contact 2 is got to, is C1When being charged to 450V (slightly above power cell of vehicle voltage)
By S1Get to contact 1；By S4Get to 12 contacts, S3Contact 2 is got to, is C2It is charged to 24V；By S2Get to contact 1, setup test.
(2) analog charge rifle and vehicle socket are plugged together into connection, first determines whether that pin 3 (i.e. protective grounding pin) goes here and there electricity
Flow table registration：If electric current registration is 1A, then it represents that the pin successful connection；If electric current registration is zero, then it represents that the pin connects
Failure, need to check reparation.
(3) in the case that protective grounding pin is successfully connected, the connection of pin 6 (i.e. control connection confirms 1 pin) is judged：
If it is 4V to measure the voltage of pin 6, show the pin successful connection；If it is 6V to measure the pin voltage-to-ground, then it is assumed that this draws
Pin connection failure.
(4) connection of pin 8,9 (i.e. the positive and negative pin of accessory power supply) is judged：By S3Contact 2 is got to, pin 8 is measured and draws
9 voltages of pin are declined in the form of exponential curve, then show pin successful connection；If measure voltage between pin 8 and pin 9 to keep not
Become, then show pin connection failure.
(5) connection of pin 7 (i.e. control connection confirms 2 pins) is judged：By S41'2' contacts are got to, if measuring pin 7
Voltage-to-ground be 6V, then show the pin successful connection；If it is 0V to measure the pin voltage-to-ground, show that the pin connects
Failure.
(6) connection of pin 4,5 (i.e. communications pins) is judged：Imitating charger communication ends can have successfully received, send report
Wen Ze shows to communicate to connect successfully, otherwise connects unsuccessful.
(7) connection of pin 1,2 (i.e. the positive and negative pin of dc source) is judged：Led to using imitating charger communication ends with vehicle
Letter, after the parameter configuration stage, if measuring voltage between pin 1 and pin 2 reduces and maintain cell voltage, shows pin
Successful connection；If measuring between pin 1 and pin 2, voltage is constant, shows connection failure.
The external pin design of analog charge rifle is identical with the charging gun of production application, and difference is each draw
The internal circuit configuration that pin is connected, the connection of pin can be distinguished using the voltage x current at pin as output.When with treating
After the connection of measuring car socket, test is attached to each pin of vehicle socket, determines that vehicle is inserted for different test results
The connection of each pin of seat, and then judge vehicle socket pins, or connection vehicle socket pins internal components whether
It is qualified.
Described simulating vehicle socket test circuit, as shown in figure 3, being connect including 9 pins one-to-one with charging gun
Mouthful, the series electrical potential source U of pin 112Loop is formed with pin 2.One single-pole double-throw switch (SPDT) S of the series connection of pin 35, S5Switch 1 successively with
Resistance Rq, ammeter A and voltage source U5Series connection ground connection, S5Switch 2 be directly connected with vehicle body earth terminal.Pin 4 is logical with pin 5
Series connection simulated battery communication ends are crossed to be connected.Simulated battery communication ends are existing module.The series resistance R of pin 65With connecting vehicle body.
Pin 7 connects resistance R6With voltage source U6The circuit formed series connection vehicle body.The series electrical potential source U of pin 889Formed back with pin 9
Road.
Wherein U5=5V, U6=12V, Rq=5 Ω, R5=R6=1000 Ω, the voltage/current of each pin is test result
Output end.The testing sequence of each pin is followed successively by protective grounding, charging connection confirms the connection of 1, accessory power supply, control connection confirms
2nd, communication connection, dc source connection.Its detailed description is as follows：
(1) by S5Contact 1 is got to, simulating vehicle socket and charging gun to be measured are plugged together into connection, first determine whether pin 3 (i.e.
Protective grounding pin) institute's string ammeter registration：If electric current registration is 1A, then it represents that the pin successful connection；If electric current registration is
Zero, then it represents that the pin connection failure, reparation need to be checked.
(2) by S5Contact 2 is got to, judges the connection of pin 6 (i.e. control connection confirms 1 pin)：If measure the voltage of pin 6
For 4V, then show the pin successful connection；If it is 0V to measure the pin voltage-to-ground, then it is assumed that the pin connection failure.
(3) connection of pin 8,9 (i.e. the positive and negative pin of accessory power supply) is judged：The voltage-to-ground for measuring pin 8,9 is respectively
12V ± 0.6V ,-(12V ± 0.6V), then show that the positive and negative pole tension of accessory power supply is qualified, and pin successful connection；If measure pin
8th, then accessory power supply voltage is unqualified not in allowed band for 9 voltage-to-grounds；If measure pin 8,9 voltage-to-grounds are 0, pin
Connection failure；
(4) connection of pin 7 (i.e. control connection confirms 2 pins) is judged：If the voltage-to-ground for measuring pin 7 is 6V,
Show the pin successful connection；If it is 12V to measure the pin voltage-to-ground, show the pin connection failure.
(5) connection of pin 4,5 (i.e. communications pins) is judged：Simulated battery communication end can have successfully received,
Message is sent, then shows the communication connection success with charger, otherwise connects unsuccessful.
(6) connection of pin 1,2 (i.e. the positive and negative pin of dc source) is judged：Using simulated battery communication end with
Charger communicates, and after the parameter configuration stage, if it is charging voltage to measure voltage between pin 1 and pin 2, shows that pin connects
It is connected into work(；If it is 0 to measure voltage between pin 1 and pin 2, show dc source pin connection failure.
The external pin design of simulating vehicle socket is identical with the vehicle socket of production application, and difference is respectively
The internal circuit configuration that individual pin is connected, the connection of pin can be distinguished using the voltage x current at pin as output.It is real
The pin connection diagram of border direct-current charging interface is as shown in Figure 1.It is each to charging gun successively after being connected with charging gun to be measured
Pin is attached test, and the connection of each pin of charging gun is determined for different test results, and then judges to fill
Whether electric rifle pin, or the internal components of connection charging gun pin are qualified.
This simulating vehicle socket test circuit can be used alone in simulating vehicle socket.
Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area
For personnel, on the premise of utility model design is not departed from, various modifications and improvements can be made, these belong to this reality
With new protection domain.
Claims (1)
- A kind of 1. direct-current charging interface of electric automobile connection status test circuit, it is characterised in that：Tested including analog charge rifle Circuit and simulating vehicle socket test circuit two parts, described analog charge rifle test circuit include and a pair of vehicle socket 1 9 pin interfaces answered, pin 1 pass through single-pole double-throw switch (SPDT) S1It is connected with bilateral diode, bilateral diode series capacitance C1, Electric capacity C1Connect pin 2, one single-pole double-throw switch (SPDT) S of the series connection of pin 32, S2Switch 1 be grounded, S2Switch 2 be sequentially connected in series electricity Flow table A, resistance Rd, voltage source U1And vehicle body, pin 4 is connected with pin 5 by imitating charger communication ends of connecting, pin 6 Connect resistance R1With voltage source U2The branch road formed to series connection, resistance R2With the branch circuit parallel connection, pin 7 and resistance R3Series connection Ground, pin 8 are connected a double-point double-throw switch S with pin 94, S4Switch 1 pass through single-pole double-throw switch (SPDT) S3Connect bilateral diode And series capacitance C2With S4Switch 2 formed loop；Work as S4During in another state, 1' series electrical potential sources U is switched3, voltage source U4It is connected with switch 2', wherein U1=5V, U2=U3=U4=12V, Rd=5 Ω, R1=R2=R3=1000 Ω, the electricity of each pin Pressure/electric current is test result output end, and described simulating vehicle socket test circuit is drawn including 9 one-to-one with charging gun Pin interface, the series electrical potential source U of pin 112Loop, one single-pole double-throw switch (SPDT) S of the series connection of pin 3 are formed with pin 25, S5Switch 1 according to Secondary and resistance Rq, ammeter A and voltage source U5Series connection ground connection, S5Switch 2 be directly connected with vehicle body, pin 4 and pin 5 are logical Cross series connection simulated battery communication ends to be connected, the series resistance R of pin 65With connecting vehicle body, pin 7 connects resistance R6With voltage source U6String The circuit formed, the series electrical potential source U of pin 8 connection vehicle body89Loop, wherein U are formed with pin 95=5V, U6=12V, Rq=5 Ω, R5=R6=1000 Ω, the voltage/current of each pin is test result output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720194704.6U CN206657072U (en) | 2017-03-02 | 2017-03-02 | Direct-current charging interface of electric automobile connection status test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720194704.6U CN206657072U (en) | 2017-03-02 | 2017-03-02 | Direct-current charging interface of electric automobile connection status test circuit |
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| Publication Number | Publication Date |
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| CN206657072U true CN206657072U (en) | 2017-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720194704.6U Expired - Fee Related CN206657072U (en) | 2017-03-02 | 2017-03-02 | Direct-current charging interface of electric automobile connection status test circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732456A (en) * | 2018-05-30 | 2018-11-02 | 南方电网科学研究院有限责任公司 | Electric automobile direct current interface connection state detector that charges |
| CN109581128A (en) * | 2018-12-28 | 2019-04-05 | 蜂巢能源科技有限公司 | Battery pack charge function test macro and method |
| CN111442800A (en) * | 2020-04-26 | 2020-07-24 | 中汽研汽车检验中心（天津）有限公司 | Integrated test system for charging and discharging connection system of electric automobile |
-
2017
- 2017-03-02 CN CN201720194704.6U patent/CN206657072U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732456A (en) * | 2018-05-30 | 2018-11-02 | 南方电网科学研究院有限责任公司 | Electric automobile direct current interface connection state detector that charges |
| CN109581128A (en) * | 2018-12-28 | 2019-04-05 | 蜂巢能源科技有限公司 | Battery pack charge function test macro and method |
| CN111442800A (en) * | 2020-04-26 | 2020-07-24 | 中汽研汽车检验中心（天津）有限公司 | Integrated test system for charging and discharging connection system of electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171121 Termination date: 20190302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |