KR100302913B1 - Conductive contact pins with thermal fuse - Google Patents

Abstract

The method of conducting the energization control while monitoring the state of the battery by the detection signal depends only on the power supply device or the control device, and there is no malfunction in these faults or noise. Also, there was a problem that the cost of the entire charging and discharging device is increased by the addition of the auxiliary device.

The rod-like current collector 2 formed by connecting the pole contact portion 21 and the external current transfer portion 22 divided into two portions in the energization direction by the low melting alloy 5, and the current transformer 2 in the axial direction Holding body 3 to be able to slide and moving, Outer coil spring 4 which is an elastic support means provided with electrical insulation between holding body 3 and pole contact part 21, and pole contact part Between the 21 and the circumferential current conducting portion 22, it is installed in a state in which electrical insulating property is stored and the energy of suppressed repulsive operation is stored, and the pole contact current conducting portion is released by suppressing the suppression by melting of the low melting point alloy 5. 21) and an actuating means for separating and insulating the external conducting portion 22.

Description

Conductive Contact Pin with Temperature Fuse

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive contact pin having a temperature fuse function. Specifically, for example, a conductive contact pin for functioning as an electrode of a charging / discharging battery of a secondary battery and for electrically connecting and energizing a battery and an electricity supply device. The present invention relates to a conductive contact pin having a temperature fuse function having a function of detecting a temperature rise of a battery and stopping electric current.

With the spread of portable devices, the demand for sealed secondary batteries such as nickel cadmium batteries, nickel hydrogen batteries and lithium ion batteries is increasing.

These batteries are often assembled using an active material in a discharged state to assemble the battery, and the battery is charged before shipping, and the battery is charged or discharged to perform an activation process that repeats charging or discharging, or charges and discharges. Examining is generally done.

However, when a sealed battery is charged with a high voltage or a large current, or when the battery is charged and discharged largely beyond the capacity of the battery, gas is generated in the battery, causing an increase in battery internal pressure and battery temperature. Has been selected to release the gas to the outside in the event of an abnormality and to lower the internal pressure. However, the rapid generation of gas breaks the battery container and scatters organic solvents as electrolytes in addition to oxygen and hydrogen, which may cause ignition and adversely affect adjacent batteries and devices.

Conventionally, a conductive contact pin provided to freely hang or peel off a charging / discharging battery is used as the charging / discharging current supply means. In general, elastic support means such as springs or leaf springs are provided to ensure contact with battery electrodes. To have a compressive force on the pole contact. In addition, the conventional conductive contact pin also has a control mechanism that automatically stops the energization in order to cope with the above-described battery abnormality during charging and discharging.

For example, the invention disclosed in Japanese Patent Application Laid-open No. Hei 9-204939 incorporates a temperature sensor for measuring battery temperature during energization into a conductive contact pin, and an external current interruption mechanism is connected by a signal from the sensor. It was of a working configuration.

However, the method of conducting power supply control by sensing signals such as battery voltage, current supply current, or battery temperature depends only on the power supply device or the control device, and therefore, there is no possibility that there is no malfunction due to the effects of these failures or noise. There is a problem with certainty and reliability, and in such a case, too, overcharging or overdischarging is concerned, so that the above-mentioned risks are concerned.

In addition, the monitoring of the battery by constantly detecting the energizing voltage, the energizing current, and the battery temperature, including the above-described invention, requires that a number of additional mechanisms be built into the conductive contact pins, and an auxiliary device for processing this information. There is also a need to reduce the reliability and increase the cost due to the complexity of the conductive contact pin, as well as to increase the cost of the entire charge-discharge device by the addition of the auxiliary device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and by incorporating a temperature fuse function in the conductive contact pin itself which cuts off the conduction path due to a temperature rise, it is possible to surely prevent a dangerous state caused by an increase in temperature of a conduction object such as a battery. Furthermore, the present invention provides a conductive contact pin having a new temperature fuse function, which requires no additional device and can be used as it is instead of the conventional conductive contact pin.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional perspective view showing a part of the whole of the conductive contact pin according to the first embodiment of the present invention, showing a state before the repulsive action, and Fig. 2 shows the state after the rebound operation of the conductive contact pin of the first embodiment of the present invention. Fig. 3 is a cross-sectional perspective view showing a state in which a part of the entire conductive contact pin of the second embodiment of the present invention is cut away, and shows a state before the repulsive operation. Fig. 4 is a conductive drawing of the second embodiment of the present invention. Fig. 5 is an enlarged cross-sectional view showing the main portion of the contact pin before the repulsive operation, and Fig. 5 is a partially cutaway perspective view showing a state after the repulsive operation of the conductive contact pin of the second embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1, 6: conductive contact pins 2, 7: through electrons

3: retainer 4: outer coil spring

5: low melting alloy 8: measuring device

21, 71: pole contact part 22, 72: external contact part

23: insulator 24, 74: inner coil spring

25, 75: stopper 26, 76: insulation cap

77: insulated tube 81: slip hole

82: storage container 83: shaft coil spring

C: extreme terminal P: charging and discharging battery

S: energized socket

In order to achieve the above object, the conductive contact pin having a temperature fuse function of the present invention is configured as follows.

An almost rod-shaped electric current formed by connecting the pole contact portion and the external current conduction portion divided into two parts in the energization direction by a conductive thermomelting melt, and a retainer for holding the electrons so as to slide in the axial direction, and the holding thereof. Elastic support means which is electrically insulating between the sieve and the pole contact portion and is elastically deformable; The pole contact part and the external contact part are disposed between the pole contact part and the outer contact part in an electrically insulating and restrained state of suppressed repulsive operation. Characterized in that it consists of operating means for rebounding operation in a direction to separate and insulate.

Further, the conductive contact pin of the above configuration is composed of one system of conductive paths, and forms the corresponding electrons in a substantially cylindrical shape, with both ends being exposed at both ends of the through electrons, and the through electrons. The measuring device may be provided on the approximately axis of the through-electron so as to have electrical insulation, and may be a conductive contact pin having two lines of conductive paths. At this time, it is preferable that the pole contact portion side of the measurer is configured to be retractable by elasticity.

In addition, the elastic support means is composed of, for example, a coil spring, a heat resistant resin elastic body, a leaf spring, and the like, and the operating means and the coil spring, a heat resistant resin elastic body, a leaf spring, and the like.

With the above configuration, the present invention works as follows.

In the initial state, the conduction electrons divided into two pole contact portions and the outer contact portion are connected by a conductive thermomelt, so that the state between the pole contact portion and the outer contact portion is enabled. At this time, the operation means is suppressed and is provided between the pole contact portion and the external contact portion in a state in which the energy of the rebound operation is stored.

In this state, the charging / discharging device of the charging / discharging device is provided with a holding body at a predetermined position, and the elastic supporting means provided between the holding body and the pole contacting portion is compressed so that the pole contacting portion is a battery for energizing. It elastically supports to contact with electrode parts, such as a back.

In this state, it is used as a normal conductive contact pin. If, for some reason, the temperature of the battery or the like rises, the thermo-melt melts at the melting point of the thermo-melt, the restrained operating means is released, and the repulsive operation is performed to separate and insulate the pole contact and the external contact. This interrupts the energization path. In addition, since the operation means is electrically insulative and is provided between the pole contact portion and the external contact portion, there is no risk of contact after operation.

Next, in the configuration of claim 2, the repulsive action of the actuating means acts on the pole conduction portion and moves to block conduction between the conducting electrons, but the presence of the measurer does not prevent the impulse defibrillation outside the actuation means.

In addition, in the structure of Claim 3, the pole contact part side of a measuring person is comprised so that retraction is possible by resilience, and a current supply object and a measuring person are connected more reliably.

In the configurations of claims 4 and 5, the elastic support means is a coil spring, a heat resistant resin elastic body, or a leaf spring, and the actuation means is a coil spring, a heat resistant resin elastic body, or a leaf spring. The operation is done.

As a result, the battery is not charged with a high voltage or a large current or charged and discharged by greatly exceeding the capacity of the battery, and gas generation, increase in battery internal pressure, and rise outside the battery temperature are prevented.

EMBODIMENT OF THE INVENTION Next, embodiment of this invention is described in detail based on drawing.

[First Embodiment]

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional perspective view showing a part of the whole conductive contact pin according to the first embodiment of the present invention. The state before the reaction action is shown, and FIG. 2 shows the state after the reaction action. In addition, the orientation used for description of a specification is for convenience of drawing reference.

The conductive contact wheel 1 of the first embodiment has a single conduction path, and is mainly composed of a conduction electron 2, a holder 3, and a coil spring 4 as elastic support means.

The through-electron 2 is formed of a conductive material such as a metal, and is composed of a pole contact portion 21 and an external contact portion 22 which are divided in two in the direction of energization, that is, the axial direction. The pole contact portion 21 has a tubular shape having a relatively small diameter, and a predetermined length is inserted into the insulating cap top opening 21a with a lower end portion 22a of the straight rod-like external current transfer portion 22 having a margin. It is fitted inside. The gap between the sandwiched portion is filled with a low melting point alloy 5 as a conductive thermomelting melt to integrate the pole contact portion 2 and the outer portion portion 22 together.

In this state, an insulator 23 made of a non-conductive material such as resin or ceramic is interposed between the bottom portion 21b of the inner space of the pole contact portion 21 and the lower end portion 22a of the outer contact portion 22. The inner coil spring 24 in the compressed state is provided as the actuating means in a state in which the energy of the repulsive operation is suppressed.

Next, the holder 3 forms a tubular shape in which both ends are open, and surrounds the circumferential conducting portion 22 of the through-electron 2. The holding body 3 has a rounded stopper 25 fixed to the upper portion of the circumferential energizing portion 22 as a top dead center so that the outside of the circumferential energizing portion 22 can slide in the axial direction.

The outer coil spring 4 as the elastic support means has a non-degree of insertion between the lower flange 30 of the holding body 3 and the upper end opening 21a of the pole contact portion 21 on the outer side of the outer circumferential portion 22. It is provided so as to surround the circumferential energizing portion 22 between the insulating caps 26 made of a malleable material.

With the above configuration, the conductive contact pin 1 of the first embodiment acts as follows.

First, the conductive contact pin 1 is inserted until it touches the flange 30 from the lower side of the holder 3 of the charging / discharging battery P of an external power supply device (not shown), as in the prior art, and the outer coil The spring 4 is compressed to move the current collector 2 in the axial direction so that the lower end portion 21c of the pole contact portion 21 comes into contact with the extreme terminal C of the target electrical component with a compressive force.

And the electricity supply socket S connected to the external power supply device is fitted and connected to the upper end part 22b of the external electricity supply part 22. With this state as an initial state, the conductive contact pin 1 is provided for its original purpose of use.

Next, when an electric component, which is an object to be energized, generates heat due to any abnormality, the heat is transferred to the conductive contact pin 1, and when the temperature rises above a predetermined temperature, the low melting point alloy 5 is melted. Melting of the low-melting-point alloy 5 causes the suppression of the restrained state of the inner coil spring 24, and the restrained canceled inner coil spring 24 is subjected to a pulsation pulsation (repulsion operation) to open the external conducting portion 22. By moving upward in the axial direction (arrow a), the pole contact portion 21 and the outer contact portion 22 are separated. As a result, the energization path of the energizer 2 is blocked.

At this time, since the insulator 23 and the insulating cap 26 are made of an electrically insulating material, the inner coil spring 24 and the outer coil spring 4 are not energized.

Second Embodiment

Next, compared with the said 1st Embodiment which comprised the electricity supply path | route by 1 system | strain, the 2nd embodiment stand | substrate which comprised the electricity supply path | route by 2 lines is demonstrated.

Fig. 3 is a cross-sectional perspective view showing a part of the entire conductive contact pin of the second embodiment of the present invention, showing the state before the repulsive operation. Fig. 4 is an enlarged cross-sectional view showing the main part at this time. A partial cutaway perspective view showing the state after the rebound operation.

The conductive contact pin 6 of the second embodiment forms the cylinder 2 of the first embodiment in a substantially cylindrical shape, and measures the cylinder by installing the measuring device 8 on the coaxial inside the cylinder 7. Two systems were provided by providing an energized path of a separate system insulated from the former (7).

The through-electron 7 is a main body that conducts electricity between the terminal C of the electric component (for example, a secondary battery) of the object and the connection terminal (not shown) of the external power supply device at the conductive contact pin 6. It functions as a cylindrical shape with both ends open.

Although the basic structure of this through hole 7 is comprised substantially similar to the through hole 2 of 1st Embodiment, the diameter is formed larger than the through hole 2. The pole contact portion 71 is opened in a cylindrical shape with both ends open, and an insertion hole 71b formed in an inner flange shape is provided at the lower end portion 71c. In the upper end opening 71a of the pole contact portion 71, the lower end portion 72b of the outer contact portion 72 formed in a cylindrical shape with both ends open is inserted with a predetermined length with a margin as in the case of the first embodiment. The low melting point alloy 5 is filled and solidified so as to integrate the pole contact current portion 71 and the external current transfer portion 72.

In addition, as in the first embodiment, a non-conductive material is formed between the edge of the inner circumference of the insertion opening 71b of the inner space of the pole contact portion 71 and the lower end opening 72b of the outer contact portion 72. The inner coil spring 74 in the compressed state is provided via the insulating sleeve 73.

The insulating sleeve 73 forms a tubular shape having a diameter into which the measuring instrument 8 described later can be inserted, and is inserted into the lower end opening 72b of the external circulating current portion 72 and inserted into the outer circumference thereof. A flange 73f is formed to abut against the lower end opening 72b of the circumferential energizing portion 72 and to abut the upper end of the internal coil spring 74 on it.

Further, an insulating cap 76 having the same configuration as the insulating cap 26 of the first embodiment is provided at the upper end opening 71a of the pole contact portion 71.

Next, the measurer 8 is made of a substantially rod-shaped conductive material such as a metal, and performs electrical measurement while abutting against the extreme terminal C of the electric component, and partially at both ends of the current collector 7. In the exposed state and in the state electrically insulated from the current collector 7, it is provided on almost the coaxial axis of the internal space of the current collector 7. The measuring member 8 is held by an insulating sleeve 73 fitted on the lower side of the lower end opening 72b of the circumferential current conduction portion 72, and the upper side of the measurer 8 of the upper end opening 72a of the circumference current conduction portion 72. It is held by an insulating cylinder 77 made of an electrically insulating material sandwiched therein.

The measuring device 8 has a basic configuration and a function thereof, which are the same as those used for a conventional conductive contact pin, and are constituted by a sliding hole 81 and a storage container 82 for storing the sliding hole 81. .

The slip port 81 constitutes the lower side of the measuring device 8, and the lower end portion 81c is formed in an awl shape to penetrate the lower end portion 82a of the storage container 82, and the pole contact portion 71 In the state exposed from the insertion port 71b, it is installed and stored on the coaxial axis other than the storage container 82.

The upper end portion 81a of the slip port 81 is configured so that the axial coil spring 83 is compressed so as to have an extended elastic bearing force, and a predetermined pressing force is applied to the contact point with the extreme terminal C. As shown in FIG.

In addition, a stop portion 81b is formed at the upper end portion 81a of the slip port 81, and the stop portion 81b is held by the inner flange-shaped stopper 84 formed in the housing 82 so as to be accommodated. The slipping holes 81 are prevented from being pulled out of the cylinder 82.

In addition, since the holding body 3 and the outer coil spring 4 which were provided in the outer side of the said through hole 7 are the same structures as the case of the said 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

The conductive contact pin 6 of the second embodiment constructed as described above acts as follows.

The installation of the external power supply device (not shown) to the charging / discharging battery P thereof is provided for the purpose of use in the same manner as the conductive contact pin 1 of the first embodiment.

At this time, the measuring member 8 is pressed against the extreme terminal C by the elastic bearing force of the axial coil spring 83.

In this state, when an electrical component that is an energized object is generated by any abnormality, heat is transferred to the conductive contact pin 6 to melt the low melting point alloy 5 as described in the above-described operation of the first embodiment. The restraint state of the coil spring 74 is released, and the external energizing portion 72 is moved upward in the axial direction by the shot force (repulsive action) (arrow b) to allow the pole contact portion 71 and the external energizing portion 72 to move. ). As a result, the energization path of the energizer 7 is blocked.

In addition, at this time, since the whole measuring part 8 is hold | maintained in the circumferential energization part 72, it moves with the circumference energization part 72, and the lower end part 81c falls from the extreme terminal C. (See Figure 5)

By the way, in addition to the above embodiment, in order to achieve the object of the present invention, the following modifications may be added.

Since the shape of the conductive contact pin and the through-electron is not limited to the cylindrical shape, for example, the conductive contact pin and the through-electron may be polygonal.

Moreover, although the coil spring is used as an operation means and an elastic support means, it is not limited to this, You may replace with elastic materials, such as a heat resistant resin elastic body and a leaf spring.

In addition, the outer coil spring and the axial coil spring, which are the conductive electrons of the conductive contact pin and the elastic support means of the measurer, are compressed to the extreme terminal C in the state of having the elastic support force, thereby making the energization more secure. Since it is not an essential component, it is also possible to set it as the structure which omitted one or both of these.

The thermal contact portion and the pole contact portion were heat-bonded using a thermomelting melt made of a low melting point alloy melted at 60 DEG C, thereby producing a conductive contact pin of the configuration of the second embodiment, and using the conductive contact pin to form a battery panel. Made.

A commercially available AA-type nickel-cadmium battery was mounted on the battery panel, and a constant current was charged at 4A to observe the operation of the safety valve during overcharging. When the conductive contact pin of the present invention reached approximately 60 ° C, The thermostat melted and the energization was stopped. The battery temperature at this time was about 80 degreeC.

According to the present invention, since a means for detecting an elevated temperature of an electrical component such as a secondary battery and blocking electric current is incorporated in the conductive contact pin, the mechanism can be simplified and reliable operation can be ensured.

Moreover, since the external shape can be made substantially the same size compared with the conventional one, it has a characteristic that it can install simply replacing a conventional thing without changing an external power supply device. As a result, it can be provided at a very low cost, unlike the case of separately installed outside as in the prior art.

In addition, when a low melting point alloy is used as the thermomelting melt, not only the error of the operating temperature can be reduced, but also the suppression of the operating means such as the coil spring can be ensured.

Claims (5)

(Correction) An almost rod-shaped electric current formed by connecting the pole contact portion divided into two in the direction of energization and the external current conduction portion with a conductive thermomelting melt, and a retainer for holding the current through the axial direction. Elastic support means provided electrically between the holder and the pole contact portion and elastically deformable; and energy of repulsive operation suppressed and suppressed between the pole contact portion and the external contact portion. Is arranged in the state of stockpiling, and has a thermal fuse function, characterized in that the operating means for repulsing operation in a direction to isolate and insulate the pole contact portion and the outer contact portion by the suppression release by the melting of the thermo-melt. Contact pins. (Correction) The method according to claim 1, wherein the through-holes are formed in a substantially cylindrical shape, with the ends exposed at both ends in the through-holes, and on an approximately axis within the through-holes so as to have electrical insulation with the through-holes. Conductive contact pin having a temperature fuse function, characterized in that the measuring device is installed. 3. The conductive contact pin according to claim 2, wherein the pole contact portion side of the measurer is configured to be retractable by elasticity. (Correction) The conductive contact pin according to any one of claims 1 to 3, wherein the elastic support means comprises a coil spring, a heat resistant resin elastomer, or a leaf spring. (New) The conductive contact pin according to any one of claims 1 to 3, wherein the actuating means comprises a coil spring, a heat resistant resin elastomer, or a leaf spring.