CN101334450B

CN101334450B - Four-terminal method test pen and test method

Info

Publication number: CN101334450B
Application number: CN2007100724003A
Authority: CN
Inventors: 李中川; 李明钧
Original assignee: HARBIN CHENGLUN ELECTRICAL APPARATUS CO Ltd
Current assignee: Harbin Austrian Electric Appliance Co., Ltd.
Priority date: 2007-06-26
Filing date: 2007-06-26
Publication date: 2012-04-25
Anticipated expiration: 2027-06-26
Also published as: CN101334450A

Abstract

The invention relates to a four-terminal test pen and a four-terminal testing method; when in electrical test applications, the four-terminal test can overcome the impacts of test contacts on the test result and further have a lot of using needs during the micro-resistance test process. The four-terminal test pen comprises: an external electrode (1), the external electrode is limited by a guide tube base (5) through an external electrode base (2) and a spring (3), the guide tube base (5) is welded with the other core of a dual-core guide wire (6) to form the conductive linkage, an internal electrode (7) of two probe electrodes and a guide tube (4) of the external electrode form the insulation support through two insulators (8), and the internal electrode is welded with one core of the dual-core guide wire to form the conductive linkage. The invention relates to the four-terminal test pen used in the battery test.

Description

Four-terminal method test pen and four-terminal method method of testing

Technical field:

the present invention relates to a kind of four-terminal method test pen and four-terminal method method of testing that accumulator detects usefulness that be used for.

Background technology:

In electrical testing was used, the four-terminal method test can overcome the influence of test contacts to test result, in small resistance test process, a large amount of user demands is arranged .

Visible two types at present of such probes, one type is to adopt two parallel probes of two test poles that probe is processed, such probe is suitable for small space to be used, the workpiece test of uncomfortable crossed belt protective cover; Another kind of, adopt a probe as electrode, the outside has the hollow edged electrode of a concentricity electrode insulation to constitute two electrodes, claims that here this probe is that interior dynamic formula probe is to be different from the present invention.The used probe elastic force of interior dynamic formula probe is not enough.

existing four-terminal method test pen needs two leads to insert test pen simultaneously, and test lead just needs two test points, and the market product is that two test points are arranged in parallel usually.

Summary of the invention:

the purpose of this invention is to provide the outer dynamic formula test pen that a kind of test electrode is thin, elastic force is suitable.

Above-mentioned purpose realizes through following technical scheme:

four-terminal method test pen; Its composition comprises: external electrode; Described external electrode to pass through external electrode seat and spring spacing through catheter block; Described catheter block is with another core welding formation conductive attachment of duplex wire, and the interior electrode of one of two probe electrodes forms insulation through two insulators and external electrode conduit and supports, and described interior electrode forms conductive attachment with the core welding of duplex wire.

described four-terminal method test pen; Between described external electrode and the interior electrode with electrode in the external electrode conductor bracing; Described catheter block is used for fixing interior electrode, and described external electrode seat is used for fixing external electrode, and described external electrode is processed with the Stainless Steel Capillary tube material.

described four-terminal method test pen, described spring guide connects with hand holding handle, and described spring guide provides rigid support, and described hand holding handle is processed with rubber, plastics or other insulating material.

a kind of four-terminal method method of testing, during test, above-mentioned test pen will be popped one's head in and vertically pricked on the workpiece; At this moment external electrode at first forms with workpiece and electrically contacts, and interior electrode is not also received workpiece, exerts pressure; The pressure that external electrode overcomes spring slides backward; Interior electrode is pricked on the workpiece, and formation electrically contacts, and reaches the requirement of four terminals test.

This technical scheme has following beneficial effect:

1. in the present invention electrode fix and external electrode is slidably popped one's head in; Be called outer dynamic formula test pen, this test pen, test electrode are thin, spring diameter is started writing much larger than interior; The part of detecting good rigidly elastic force of motion is suitable, processing request is low, can satisfy request for utilization.

. test point of the present invention is to concentrate on a place, and test point one is to be positioned at the test pen midline position, and another is the outer tube that is positioned at test pen, has realized that outward appearance is at a place.

. the present invention with the injection moulding hand holding handle with two core lead fixed in one, the external electrode of a termination test pen and interior electrode, two φ of another termination, 3.2 elastic rod plugs have been realized the same color of two lines.

Stainless steel capillary has been adopted in , is equipped with a spot of machine and adds part and moulding, and the elastic force of spring has also carried out optimizing and reduced cost and saved material resources consumption.

feel pressure of the present invention is suitable, production technology good, can satisfy batch production requirement.

the present invention has replenished the blank in accumulator testing product market.

the present invention has realized the precision of battery tension and internal resistance is detected and analysis-by-synthesis, has solved the early detection of battery malfunction and the difficult problem that real-time performance detects breakthroughly.

Description of drawings:

accompanying drawing 1 is the test pen structural representation.

accompanying drawing 2 is structural representations of this product.

Embodiment of the present invention:

Embodiment 1:

four-terminal method test pen; Its composition comprises: external electrode 1; The rear end of described external electrode 1 connects with spring 3 in external electrode seat 2 and the external electrode seat 2; Described spring 3 leans to be made up of on the external electrode seat 2 of one external electrode conduit 4 and its, and described catheter block 5 forms conductive attachment with another core welding of duplex wire 6, external electrode conduit 4 is housed in the described catheter block forms conductive attachment; The interior electrode 7 of one of two probe electrodes passes through two insulators 8 and forms the insulation support with external electrode conduit 4, and described interior electrode 7 rear ends form conductive attachment with the core welding of duplex wire 6.

described four-terminal method test pen; Support interior electrode 7 with external electrode conduit 4 between described external electrode 1 and the interior electrode 7; Described catheter block 5 is used for fixing interior electrode 7; Described external electrode seat 2 is used for fixing external electrode 1, and described external electrode 1 usefulness Stainless Steel Capillary tube material is processed.

described four-terminal method test pen; Described spring guide 9 connects with hand holding handle 10; Described spring guide 9 provides rigid support, and described hand holding handle 10 usefulness rubber, plastics or other insulating material are processed, described hand holding handle 10 and the same center of internal and external electrode.

described four-terminal method test pen, during test, test pen will be popped one's head in and vertically pricked on the workpiece; At this moment external electrode at first forms with workpiece and electrically contacts, and interior electrode is not also received workpiece, exerts pressure; The pressure that external electrode overcomes spring slides backward; Interior electrode is pricked on the workpiece, and formation electrically contacts, and reaches the requirement of four terminals test.

are positioned at the four-terminal method test pen center line when not using test point Zang Er does not reveal, and the test point of external electrode is positioned at outside the test pen by the effect of a spring.Because the effect of hand-power is positioned at the outer external electrode (test point) of test pen and inwardly slides, another test point that is positioned at the test pen center line exposes back contact electrode simultaneously, has realized test job during use.

probe-type test pen proposed by the invention is to be suitable under small space or measured workpiece are left the situation of protective cover protection of instrument connection, carrying out the four-terminal method test.

Claims

1. a kind of four-terminal method test pen; Its composition comprises: external electrode; It is characterized in that: described external electrode to pass through external electrode seat and spring spacing through catheter block; Described catheter block is with another core welding formation conductive attachment of duplex wire, and the interior electrode of one of two probe electrodes forms insulation through two insulators and external electrode conduit and supports, and described interior electrode forms conductive attachment with the core welding of duplex wire.

2. four-terminal method test pen according to claim 1; It is characterized in that: between described external electrode and the interior electrode with electrode in the external electrode conductor bracing; Described catheter block is used for fixing interior electrode; Described external electrode seat is used for fixing external electrode, and described external electrode is processed with the Stainless Steel Capillary tube material.

3. a kind of four-terminal method method of testing, it is characterized in that: during test, claim 1 or 2 described four-terminal method test pens will be popped one's head in and vertically pricked on the workpiece; At this moment external electrode at first forms with workpiece and electrically contacts, and interior electrode is not also received workpiece, exerts pressure; The pressure that external electrode overcomes spring slides backward; Interior electrode is pricked on the workpiece, and formation electrically contacts, and reaches the requirement of four terminals test.