CN110261681A - Contact impedance calibrating terminal and contact impedance test method - Google Patents
Contact impedance calibrating terminal and contact impedance test method Download PDFInfo
- Publication number
- CN110261681A CN110261681A CN201910646054.8A CN201910646054A CN110261681A CN 110261681 A CN110261681 A CN 110261681A CN 201910646054 A CN201910646054 A CN 201910646054A CN 110261681 A CN110261681 A CN 110261681A
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- Prior art keywords
- contact
- terminal
- base
- impedance
- plate
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- Pending
Links
- 238000010998 test method Methods 0.000 title claims abstract description 13
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Abstract
A kind of contact impedance calibrating terminal, including insulating body and take shape in the first, second contact terminal of the insulating body two sides, first, second contact terminal is electrically isolated by the insulating body, and first, second contact terminal respectively includes the first, second cambered surface contact portion and the first, second interconnecting piece；The application also provides a kind of contact impedance test method.
Description
Technical field
This application involves testing equipment field, espespecially a kind of contact impedance calibrating terminal and contact impedance test method.
Background technique
Charging gun is widely used in electric car charging, and the charging that connection charging gun is equipped with inside electric car is inserted
Seat, the charging socket include the female terminal of several transmission electric energy, and the female terminal is generally jack structure, described to fill
Electric rifle is equipped with contact pin and is inserted into the jack, to cooperate the female terminal preferably with the contact pin, usually inserts described
One torsional spring is set in hole the connection of the female terminal and contact pin is connected, and the torsional spring can be worn after largely plugging
Or surrender, cause the contact impedance between torsional spring and contact pin to increase.And the contact pin of charging gun and the jack of socket generally connect at this time
It is connected to cable, in this way, resistance value, which is cable impedance, contact pin and jack, crimps impedance, contact pin and jack itself with the cable
Resistance value and the sum of jack and the contact impedance of contact pin.And the resistance value of the contact impedance is much smaller than impedance total value, can not pass through
Impedance total value is measured to judge the degree of wear of the torsional spring.The test method of establishing criteria GB/T 33594 wants peopleware
It asks higher, and only facilitates realization in laboratory, and the female terminal of existing electric vehicle has been installed on car, carries out dismounting inspection
Too complexity is surveyed, is badly in need of a kind of contact impedance test method of simplicity thus to judge the degree of wear of torsional spring.
Summary of the invention
In consideration of it, it is necessary to provide a kind of contact impedance calibrating terminal and contact impedance test method, it can easy test electricity
The contact impedance of the socket of motor-car is to judge the torsional spring degree of wear in socket.
In order to solve the above technical problems, this application provides a kind of contact impedance calibrating terminal, including insulating body and at
Type passes through the insulating body in the first, second contact terminal of the insulating body two sides, first, second contact terminal
It electrically isolates, first, second contact terminal respectively includes the first, second cambered surface contact portion and the first, second interconnecting piece.
Preferably, the insulating body includes plate-like base, and the first, second cambered surface contact portion is located at the plate
The two sides of shape base portion, the first, second cambered surface contact portion and the plate-like base constitute cylindrical-shaped structure.
Preferably, the front end of the first, second cambered surface contact portion is formed with the first, second boss, the plate-like base
Front end has extended to form head, and stage portion, the first, second boss folder are formed between the head and the plate-like base
The stage portion two sides are held in, first, second boss and the stage portion constitute cylindrical-shaped structure.
Preferably, first, second interconnecting piece is extended to form from first, second boss front end in the head respectively
The two sides in portion.
Preferably, the outer diameter of first, second boss is greater than the outer diameter of the first, second cambered surface contact portion, described
The thickness on head is greater than the thickness of the plate-like base, and the width on the head is greater than the width of the plate-like base, and described
The width in rank portion is equal to the width on the head, and the thickness of the stage portion is equal to the thickness of the plate-like base.
Preferably, the first cambered surface contact portion has extended rearwardly to form insertion end, and the plate-like base tail portion is vertical
The plate-like base direction has extended to form isolated tail, and the insertion end is located at the isolated tail rear end, the insertion end
It is electrically isolated by the isolated tail and the second cambered surface contact portion.
Preferably, the insertion end constitute entire calibrating terminal rear end and towards far from the panel-shaped base body direction outer diameter
It gradually becomes smaller.
Preferably, first, second interconnecting piece is connected with testing impedance equipment, the contact impedance calibrating terminal insertion
In one torsional spring, first, second contact terminal, torsional spring and the testing impedance equipment is made to constitute a circuit, the impedance
Test equipment measures the impedance in circuit.
In order to solve the above technical problems, present invention also provides a kind of contact impedance test method, including aforementioned contact resistance
Anti- calibrating terminal, includes the following steps:
S01, electric vehicle to be tested is provided, the electric vehicle to be tested is equipped with charging interface, is equipped in the charging interface
Female terminal, the jack of the female terminal is interior to be equipped with torsional spring；
S02, the contact impedance calibrating terminal is inserted into the torsional spring, the contact impedance calibrating terminal first,
Second contact terminal is in electrical contact with the contact surface of the torsional spring respectively；
S03, provide a microhm table, by the microhm table be connected to the contact impedance calibrating terminal first,
On first, second interconnecting piece of the second contact terminal；
S04, the starting microhm table, make first contact terminal, torsional spring, the second contact terminal and the microhm
Table forms a current loop, measures the impedance of current loop；
S05, judge whether the impedance of the current loop obtained is in scheduled range of normal value.
Preferably, the insulating body includes plate-like base, and the first, second cambered surface contact portion is located at the plate
The two sides of shape base portion, the first, second cambered surface contact portion and the plate-like base constitute cylindrical-shaped structure, and described first, the
The contact face contact of two cambered surface contact portions and the torsional spring.
The contact impedance calibrating terminal and test method of the application is by the way that molding first, second connects simultaneously on insulating body
Contact portion is contacted respectively with the torsional spring in electric vehicle by the first, second contact portion, and constitutes current loop, and microhm table is passed through
The resistance value in circuit is measured, can judge whether torsional spring is in normal wear state, if is needed replacing.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the three-dimensional combination figure of the application contact impedance calibrating terminal；
Fig. 2 is the stereogram exploded view of the application contact impedance calibrating terminal；
Fig. 3 is the cross-sectional view of the application contact impedance calibrating terminal；
Fig. 4 is the test mode figure and its partial enlarged view of the application contact impedance calibrating terminal.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.
Shown in please referring to Fig.1 to Fig.3, the application contact impedance calibrating terminal A includes insulating body 10 and takes shape in described
First, second contact terminal 20,30 of 10 two sides of insulating body.
The insulating body 10 include plate-like base 11, from 11 tail portion of plate-like base towards side extend to form every
From tail portion 12 and the head 13 extended to form from 11 front end of plate-like base.The width on the head 13 is greater than the plate base
The width in portion 11, is formed with stage portion 14 between the plate-like base 11 and the head 13, the stage portion 14 with it is described
13 width of head is equal.The thickness on the head 13 be greater than the plate-like base 11 thickness, the thickness of the stage portion 14 with
The thickness of the plate-like base 11 is equal.
First contact terminal 20 include take shape in 11 first side of plate-like base the first cambered surface contact portion 21, from
First cambered surface contact portion, 21 rear end extends to form and is coated on the insertion end 22 of 10 tail portion of insulating body, is formed in institute
State the first boss 23 of 21 front end of the first cambered surface contact portion and from before the first boss 23 to the first connecting portion extended to form
24。
Second contact terminal 30 includes the second cambered surface contact portion 31, the shape for taking shape in described 11 second side of plate-like base
The second boss 33 of second cambered surface contact portion, 31 front end described in Cheng Yu and from before the second boss 33 to second extended to form
Interconnecting piece 34.
The insertion end 22 constitutes the rear end of entire calibrating terminal A and is in the gradually smaller partial cone structure of outer diameter,
The rear end of the second cambered surface contact portion 31 by the isolated tail 12 of the insulating body 10 and the insertion end 22 electrically every
From.The first, second cambered surface contact portion 21,31 is electrically isolated by the plate-like base 11.First, second cambered surface connects
Contact portion 21,31 and the plate-like base 11 are combined into cylindrical structure.The first, second cambered surface contact portion 21,31 with it is right
The contacting surface for connecing torsional spring is equal.
The outer diameter of first, second boss 23,33 is greater than the outer diameter of the first, second cambered surface contact portion 21,31.
Please continue to refer to shown in Fig. 4, the application contact impedance calibrating terminal A is inserted into the jack of the female terminal 40 of socket B
It is interior and in electrical contact with the torsional spring 41 in the jack.
The contact impedance test method of the application includes the following steps:
S01, electric vehicle to be tested is provided, the electric vehicle to be tested is equipped with charging interface B, sets in the charging interface B
There is female terminal 40, is equipped with torsional spring 41 in the jack of the female terminal 40；
S02, the contact impedance calibrating terminal A is inserted into the torsional spring 41 of the female terminal 40, the contact impedance
First, second cambered surface contact portion 21,31 of calibrating terminal is in electrical contact with the torsional spring 41 respectively；
S03, a microhm table is provided, two electrodes of the microhm table is respectively connected to the contact impedance and are surveyed
On the first, second interconnecting piece 24,34 for trying the first, second contact terminal 20,30 of terminal；
S04, the starting microhm table, make first contact terminal 20, torsional spring 41, the second contact terminal 30 with it is described
Microhm table forms a current loop, measures the first, second cambered surface contact portion of first, second contact terminal 20,30
The resistance value in 21,31 circuits constituted with the torsional spring 41；
The resistance value in the circuit that S05, foundation obtain is compared with range of normal value, judges the abrasion journey of torsional spring
Degree, is made whether the decision needed replacing.
The contact impedance calibrating terminal and test method of the application passes through the molding first, second simultaneously on insulating body 10
Contact portion 20,30 is contacted respectively with the torsional spring in electric vehicle by the first, second contact portion 20,30, and constitutes current loop,
The resistance value in circuit is measured by microhm table, can judge whether torsional spring is in normal wear state, if is needed replacing.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (10)
1. a kind of contact impedance calibrating terminal, which is characterized in that including insulating body and take shape in the insulating body two sides
First, second contact terminal, first, second contact terminal are electrically isolated by the insulating body, and described first, second
Contact terminal respectively includes the first, second cambered surface contact portion and the first, second interconnecting piece.
2. contact impedance calibrating terminal as described in claim 1, which is characterized in that the insulating body includes plate-like base,
The first, second cambered surface contact portion is located at the two sides of the plate-like base, the first, second cambered surface contact portion and institute
It states plate-like base and constitutes cylindrical-shaped structure.
3. contact impedance calibrating terminal as claimed in claim 2, which is characterized in that the first, second cambered surface contact portion
Front end is formed with the first, second boss, and the plate-like base front end has extended to form head, the head and the plate-like base
Between be formed with stage portion, first, second boss is held on the stage portion two sides, first, second boss and institute
It states stage portion and constitutes cylindrical-shaped structure.
4. contact impedance calibrating terminal as claimed in claim 3, which is characterized in that first, second interconnecting piece respectively from
First, second boss front end is extended to form in the two sides on the head.
5. contact impedance calibrating terminal as claimed in claim 4, which is characterized in that the outer diameter of first, second boss is big
In the outer diameter of the first, second cambered surface contact portion, the thickness on the head is greater than the thickness of the plate-like base, the head
Width be greater than the width of the plate-like base, the width of the stage portion is equal to the width on the head, the stage portion
Thickness is equal to the thickness of the plate-like base.
6. contact impedance calibrating terminal as described in claim 1, which is characterized in that the first cambered surface contact portion extends back
It is formed with insertion end, the plate-like base tail portion has extended to form isolated tail in the vertical plate-like base direction, described to insert
Enter end and be located at the isolated tail rear end, the insertion end by the isolated tail and the second cambered surface contact portion electrical property every
From.
7. contact impedance calibrating terminal as claimed in claim 6, which is characterized in that the insertion end constitutes entire calibrating terminal
Rear end and gradually become smaller towards far from the outer diameter in the panel-shaped base body direction.
8. contact impedance calibrating terminal as described in claim 1, which is characterized in that first, second interconnecting piece is connected with
Testing impedance equipment, the contact impedance calibrating terminal are inserted into a torsional spring, make first, second contact terminal, torsional spring with
The testing impedance equipment constitutes a circuit, and the testing impedance equipment measures the impedance in circuit.
9. a kind of contact impedance test method, including the described in any item contact impedance calibrating terminals of claim 1 to 8, special
Sign is, includes the following steps:
S01, electric vehicle to be tested is provided, the electric vehicle to be tested is equipped with charging interface, is equipped with socket in the charging interface
Terminal, the jack of the female terminal is interior to be equipped with torsional spring；
S02, the contact impedance calibrating terminal is inserted into the torsional spring, the first, second of the contact impedance calibrating terminal
Contact terminal is in electrical contact with the contact surface of the torsional spring respectively；
S03, a microhm table is provided, the microhm table is connected to the first, second of the contact impedance calibrating terminal
On first, second interconnecting piece of contact terminal；
S04, the starting microhm table, make first contact terminal, torsional spring, the second contact terminal and the microhm table shape
At a current loop, the impedance of current loop is measured；
S05, judge whether the impedance of the current loop obtained is in scheduled range of normal value.
10. a kind of contact impedance test method as claimed in claim 9, which is characterized in that the insulating body includes plate
Base portion, the first, second cambered surface contact portion are located at the two sides of the plate-like base, the first, second cambered surface contact
Portion and the plate-like base constitute cylindrical-shaped structure, the contact face contact of the first, second cambered surface contact portion and the torsional spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910646054.8A CN110261681A (en) | 2019-07-17 | 2019-07-17 | Contact impedance calibrating terminal and contact impedance test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910646054.8A CN110261681A (en) | 2019-07-17 | 2019-07-17 | Contact impedance calibrating terminal and contact impedance test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110261681A true CN110261681A (en) | 2019-09-20 |
Family
ID=67926855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910646054.8A Pending CN110261681A (en) | 2019-07-17 | 2019-07-17 | Contact impedance calibrating terminal and contact impedance test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110261681A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6280209B1 (en) * | 1999-07-16 | 2001-08-28 | Molex Incorporated | Connector with improved performance characteristics |
| JP2015159079A (en) * | 2014-02-25 | 2015-09-03 | 中国電力株式会社 | Connecting instrument and terminal connecting method |
| DE102015120229A1 (en) * | 2015-11-23 | 2017-05-24 | Phoenix Contact E-Mobility Gmbh | Test terminal for shorting two contact elements of a connector part |
| CN106785545A (en) * | 2017-03-02 | 2017-05-31 | 胡世勇 | A kind of charging electric vehicle socket of fast changeable jack |
| CN106848666A (en) * | 2017-03-18 | 2017-06-13 | 昆山惠禾新能源科技有限公司 | Plug terminal, female terminal and its component |
| CN107284246A (en) * | 2017-07-04 | 2017-10-24 | 无锡英捷汽车科技有限公司 | A kind of electric automobile main contactor failure detector |
| CN107290610A (en) * | 2017-07-24 | 2017-10-24 | 苏州航电子科技股份有限公司 | Charging gun detector and detection method |
| JP2017220346A (en) * | 2016-06-07 | 2017-12-14 | 住友電装株式会社 | connector |
| CN207398431U (en) * | 2017-11-02 | 2018-05-22 | 昆山惠禾新能源科技有限公司 | Charging gun pipette tips |
| CN211086445U (en) * | 2019-07-17 | 2020-07-24 | 昆山惠禾新能源科技有限公司 | Contact impedance test terminal |
-
2019
- 2019-07-17 CN CN201910646054.8A patent/CN110261681A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6280209B1 (en) * | 1999-07-16 | 2001-08-28 | Molex Incorporated | Connector with improved performance characteristics |
| JP2015159079A (en) * | 2014-02-25 | 2015-09-03 | 中国電力株式会社 | Connecting instrument and terminal connecting method |
| DE102015120229A1 (en) * | 2015-11-23 | 2017-05-24 | Phoenix Contact E-Mobility Gmbh | Test terminal for shorting two contact elements of a connector part |
| JP2017220346A (en) * | 2016-06-07 | 2017-12-14 | 住友電装株式会社 | connector |
| CN106785545A (en) * | 2017-03-02 | 2017-05-31 | 胡世勇 | A kind of charging electric vehicle socket of fast changeable jack |
| CN106848666A (en) * | 2017-03-18 | 2017-06-13 | 昆山惠禾新能源科技有限公司 | Plug terminal, female terminal and its component |
| CN107284246A (en) * | 2017-07-04 | 2017-10-24 | 无锡英捷汽车科技有限公司 | A kind of electric automobile main contactor failure detector |
| CN107290610A (en) * | 2017-07-24 | 2017-10-24 | 苏州航电子科技股份有限公司 | Charging gun detector and detection method |
| CN207398431U (en) * | 2017-11-02 | 2018-05-22 | 昆山惠禾新能源科技有限公司 | Charging gun pipette tips |
| CN211086445U (en) * | 2019-07-17 | 2020-07-24 | 昆山惠禾新能源科技有限公司 | Contact impedance test terminal |
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