JP2977189B2 - Conductive contact pin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive contact pin for contacting an electrode of an electric component such as a battery and electrically connecting the electrode to another electric component.

[0002]

2. Description of the Related Art When conducting a charge / discharge test of a secondary battery such as a lithium ion battery, it is necessary to measure the temperature of the battery body. Conventionally, a temperature sensor is closely attached to the body of the battery to perform the test. I was going. However, this method occupies a large space in mounting the temperature sensor and is not suitable for testing a large number of batteries at the same time.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a conductive contact pin incorporating a temperature sensor in order to solve such a problem.

[0004]

SUMMARY OF THE INVENTION A conductive probe according to the present invention is provided with a temperature probe so that it can slide in the axial direction into a cylindrical contact body whose tip is a contact surface with an electrode of an electric component. Is fitted. A temperature sensor such as a thermistor is incorporated inside the temperature probe. Then, a spring for urging the temperature probe forward is provided.

[0005]

The battery can be electrically connected to another electric circuit connected to the contact simply by pressing the tip of the contact body against the electrode of the battery or the like. At the same time, the tip of the temperature probe is pressed against the battery electrode by the spring, and the temperature of the electric component can be measured.

[0006]

1 and 2, a contact body 3 is slidably fitted in a mounting sleeve 2. FIG. The contact body 3 has a battery 5
Contact surface 6. A female screw 7 is cut in the rear part of the contact body 3, and a nut 8 screwed to the female screw 7 is tightened to attach the lug terminal 10. The conductor 11 connected to the lug terminal 10 is connected to a load (current source during charging).

A coil spring 12 is contracted between the head 3a of the contact body 3 and the mounting sleeve 2. The contact body 3 is urged forward by this spring, so that the tip contact surface 6 comes into close contact with the battery.

The contact body 3 is formed hollow, and the voltage probe 13 is fitted therein so that it can slide back and forth. In order to electrically insulate the voltage probe 13 from the contact body 3, an insulating sleeve 15 is placed between them.
A female screw 16 is cut in the rear of the voltage probe 13.
A lug terminal 18 is attached by screwing a nut 17 to this. Reference numeral 19 denotes an insulating washer. The conductor 20 connected to the lug terminal 18 leads to a voltmeter.

A step 21 is formed behind the voltage probe,
A coil spring 22 is contracted between the step 21 and the insulating sleeve 15. The voltage probe 13 is urged forward by this spring, and the tip contact surface comes into close contact with the battery.
(If there is no battery, as shown in FIG.
Projecting slightly from the tip of )

The voltage probe 13 is also formed to be hollow, and houses the temperature probe 23 slidably back and forth. Reference numeral 28 denotes an insulating sleeve. Temperature probe 2
3, a temperature sensor (for example, a thermistor) is accommodated in a copper cap 24 as shown in detail in FIG. 2, and a lead wire 26 extending from the temperature sensor passes through the voltage probe 13 from the rear end. It is led out to the temperature measurement circuit.

The lower end of the temperature probe 23 and the voltage probe 1
The coil spring 29 is contracted between the third step portions 27.
The temperature probe 23 is urged forward by this spring, and the tip comes into close contact with the battery electrode. (If you do n’t have a battery,
As shown by the dashed line in FIG. 2, it slightly protrudes from the tip of the voltage probe. )

FIG. 3 shows an outline of a battery test apparatus using the conductive contact pins. The battery tray 30 has a number of recesses 31 formed therein, and the batteries 5 to be tested are put in these recesses and arranged. . The above-mentioned conductive contact pins 32 are attached to the upper and lower electrode support plates 32 at the same intervals as the battery 5. It is not necessary to incorporate a temperature probe into the conductive contact pins attached to the upper electrode support plate.

When performing the test, the batteries 5 arranged in the case 30 are sandwiched between the upper and lower electrode support plates 32. In this case, the tip of the conductive contact pin 31 is pressed against the corresponding electrode of the battery 5. It should be noted here that each of the contact body 3, the voltage probe 13 and the temperature probe 23 are provided with their own springs 12, 22, and 29, and are pushed forward by their resilient force, and the tip of the battery is That is, it comes into close contact with the electrode. In particular, as a result of the voltage probe 13 being in close contact with the battery electrode, it is possible to accurately measure the battery voltage without being affected by the voltage drop due to the charging / discharging current. At the same time, the temperature of the battery itself can be measured by the temperature probe 23.

In the above embodiment, the voltage probe 1
Although the temperature probe 23 is provided in the contact 3, the temperature probe may be provided in the contact body 3 without providing the voltage probe.

[0015]

As described above, this conductive contact pin incorporates a temperature probe in the contact body,
Since the electrical connection and the temperature measurement of the electric component to be tested can be simultaneously performed, and a space for mounting the temperature sensor is not required, it is suitable for a case where a large number of batteries are arranged and a charge / discharge test is performed. In addition, since the temperature probe is biased forward by the spring, the tip of the temperature probe comes into close contact with the battery, and accurate temperature measurement can be performed.

A voltage probe may be provided in the contact body, and a temperature probe may be provided in the voltage probe.
In this way, even when a large current flows through the contact body, the voltage of the electrical component under test can be measured by the voltage probe without being affected by the voltage drop.

[Brief description of the drawings]

FIG. 1 is an elevational view of a use state of a conductive contact pin, in which a right half is shown in cross section.

FIG. 2 is a sectional view of the head similarly.

FIG. 3 is an explanatory diagram of a battery test apparatus.

[Explanation of symbols]

 3 Contact Body 5 Battery 13 Voltage Probe 22 Spring 23 Temperature Probe 25 Temperature Sensor 29 Spring

Continuation of the front page (56) References JP-A-59-99271 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) H01M 10/48 G01R 1/067 G01R 31/36

Claims (2)

(57) [Claims] 1. A cylindrical contact main body (3) having a tip serving as a contact surface with an electrode of an electric component (5), and fitted into the contact main body so as to be slidable in the axial direction. , A temperature probe (2) incorporating a temperature sensor (25) inside
3) and a conductive contact pin comprising a spring (29) for urging the temperature probe forward so that the tip of the temperature probe contacts the electrode of the electric component. 2. A cylindrical contact main body (3) having a tip serving as a contact surface with an electrode of an electric component (5), and an axially slidable slide in the contact main body. A voltage probe (13) fitted in a state of being electrically insulated from the contact body, and a spring (22) for urging forward so that a tip of the voltage probe contacts an electrode of an electric component;
A temperature probe (23) fitted in the voltage probe so as to be slidable in the axial direction and having a temperature sensor (25) incorporated therein; and a tip of the temperature probe coming into contact with an electrode of an electric component. A conductive contact pin consisting of a spring (29) biasing forward.