JPH09161745A - Battery having terminal and circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify battery replacing work by easily performing installation of a battery having a terminal to be used as a power source or the like for memory backup to an apparatus or installation of the battery to various circuit boards so as to be freely mountable-demountable. SOLUTION: This is formed in the constitution having terminal pieces 2 and 3 installed on a terminal surface of a battery 1 installed on a plate-like terminal piece of an installing object apparatus, and a swelling part to press and fix both side surfaces of a plate-like terminal is arranged in a side surface part, and locking part spaces D formed of its swelling part, parts 2b and 3b by bending a peripheral edge part in a circular arc shape divided into plural parts so that an opening part A is formed on one surface and projecting parts or spherical crown parts 2a and 3a partially projecting inward on the other surface, are provided, and a metallic material on which a plate thickness is 0.15 to 1.0mm and Vickers hardness is 250 to 450HV and a spring elastic modulus is 30 to 60kgf/mm, is used as a terminal piece material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery with terminals that can be removably mounted and a circuit board that can be removably equipped with batteries.

[0002]

2. Description of the Related Art In general, coin-type, button-type, cylindrical lithium and alkaline primary and secondary batteries are widely used as a power source for various types of memory backup of electronic devices and the like. Resistance welding, laser welding (Y
It was mounted by directly soldering the one mounted by a method such as AG laser, excimer laser, carbon dioxide laser welding) to the circuit board. In this case, when the life of the battery is reduced, or when the warranty period of the battery life has expired, the replacement operation of the battery is complicated. Also, in consideration of recent recycling of resources, it is desired that batteries using various metal oxides and rare metals such as lithium and zinc need to be recycled. For this reason, Japanese Unexamined Patent Publication No. 60-131753,
As described in JP-B-3-40464, a battery holder capable of easily taking out a battery has been used.

[0003]

When a battery is used by mounting it on a battery holder, a space for accommodating the battery holder is required in a circuit board. Therefore, it is difficult to provide a space for accommodating the battery holder in the circuit board.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a terminal-equipped battery and a circuit board in which the battery can be replaced easily and smoothly and which has excellent fixing strength.

[0005]

SUMMARY OF THE INVENTION In order to solve these problems, the present invention provides a terminal piece attached to a terminal surface of a battery mounted on a flat terminal of a device to be mounted, that is, a mating device.
Alternatively, the structure and material of the mounting member provided on the circuit board for mounting the flat terminal mounted on the surface of the battery terminal have been studied. Specifically, as a structure of a terminal piece attached to the terminal surface of the battery or a plate-shaped battery terminal mounting member provided on a circuit board, a slidable battery terminal for pressing and fixing both side surfaces of the plate-shaped terminal to be attached. A bulge portion provided on both side surface portions of the piece or on both side surface portions of the mounting member and a peripheral edge portion are bent into a plurality of arcs so as to form an opening portion on one surface. And a locking portion formed by the tip surface of the convex portion that partially protrudes inward on the other surface, or the tip surface of the spherical crown portion that partially protrudes inward on the other surface. The problem is solved by adopting a structure in which the member to be mounted is pressed and fixed at the locking portion.

Further, the material of the terminal piece, the mounting member and the terminal material to be mounted has a plate thickness of 0.15 m.
In the range of m to 1.0 mm, the prior art has a Vickers hardness of less than 250 HV and a spring limit of 30 kgf / m.
m ² , the Vickers hardness of the present invention was 250 to 450 HV, and the spring modulus was 30 to 60 kgf.
/ Mm ^2, and the distance (interval) between the side bulging portions of the locking portion is 0.3 to 1.0 mm larger than the plate width of the material to be mounted.
Stainless steel material preferably shortened by 0.4 to 1.0 mm,
It is made of a nickel material or a composite material thereof.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION By using a battery with a terminal to which a terminal piece is attached according to the present invention or a circuit board having an attaching member, the battery can be exchanged very easily in a detachable manner, and the strength due to the spring pressure generated by the construction is strong. It is possible to maintain a stable crimped state at all times, which is very useful in terms of handling and recycling.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below based on an example of a terminal-equipped battery having a terminal piece on the terminal surface of the battery shown in FIGS.

FIG. 1 is a front view showing a state in which terminal pieces 2, 3 according to the present invention are welded and fixed to the positive and negative terminal surfaces of a coin-shaped lithium battery 1 by laser welding. As shown in the main part enlarged sectional view of FIG. 5, slidable bulging portions 2c, 3c for pressing and fixing both side portions of the flat terminal at both side portions C thereof are provided at the distal end portions of the terminal pieces 2, 3, respectively. , One side A
A portion 2b, 3b in which the peripheral edge portion is divided into a plurality of parts and bent into an arc shape so as to form an opening,
A convex portion 2a that partially protrudes inward on the other surface B,
3a is provided with a locking portion space D of the terminal of the counterpart device. Reference numerals 2d and 3d denote terminal insertion guides or positioning guides when fitting the terminals of the partner device.

FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side view of FIG. FIG. 4 is a front view showing a state where the flat terminal piece 4 of the counterpart device is fitted into the locking portion space D,
FIG. 5 is a sectional view taken along the line AA of FIG. Therefore, FIG. 5 shows a cross section in a state where the flat terminal piece 4 provided on the partner device is fitted. The terminal piece 4 is provided on the terminal pieces 2 and 3 according to the present invention, that is, on both side surface portions C thereof, slidable swelling portions 2c and 3c for pressing and fixing both side surface portions of the plate-like terminal and opening on one surface A. Portions 2b, 3 of which the peripheral edge portion is bent into an arc shape divided into three portions with the same radius of curvature so as to form the portion A _1.
a tip portion surface A _2, A ₃ of b, partially convex portion 2a protruding inward, engaged in a pressed state to the locking portion space D formed by the front end surface B ₁ of 3a on the other surface B It is fixed. When the distance (interval) between the side bulges 2c and 3c is E and the width of the mating flat terminal piece 4 is F, E and F are:

[0011]

(Equation 3)

The configuration is such that the relationship shown in FIG. 6 to 10 show another embodiment of the present invention.

Another embodiment of the present invention will be described below with reference to FIG.
~ It demonstrates based on the example of the battery with a terminal provided with the terminal piece on the terminal surface of the battery shown in FIG.

The same parts as those shown in FIGS. 1 to 5 are designated by the same reference numerals. FIG. 6 is a front view showing a state in which the terminal pieces 2 and 3 according to the present invention are welded and fixed to the positive and negative electrode terminal surfaces of the coin type lithium battery 1 by laser welding. As shown in the enlarged cross-sectional view of the main part of FIG. 10, the tip ends of the terminal pieces 2 and 3 are provided with slidable bulging portions 2c and 3c for pressing and fixing both side surface portions of the flat terminal at the both side surface portions C thereof. , Portions 2b and 3b each having a peripheral edge portion bent into a plurality of arcs so as to form an opening on one surface A
There is provided a terminal engagement space D for the terminal of the counterpart device, which is formed by b and the spherical crown portions 2a, 3a partially protruding inward on the other surface B. Reference numerals 2d and 3d denote terminal insertion guides or positioning guides when fitting the terminals of the partner device.

FIG. 7 is a plan view of FIG. 6, and FIG. 8 is a side view of FIG. FIG. 9 is a front view showing a state in which the flat plate terminal piece 4 of the counterpart device is fitted in the locking portion space D,
FIG. 10 is a sectional view taken along the line AA of FIG. Therefore, FIG. 10 shows a flat terminal piece 4 provided on the counterpart device.
2 shows a cross section of a state in which is fitted. The terminal piece 4 is provided on the terminal pieces 2 and 3 according to the present invention, that is, on both side surface portions C thereof, the slidable bulging portions 2c and 3c for pressing and fixing the both side surface portions of the plate-like terminal and the one side surface A are opened. A portion 2b formed by bending the peripheral edge portion into an arc shape divided into three portions with the same radius of curvature so as to form the portion A ₁ .
3b in a state of pressure contact with a locking portion space D formed by the tip portions A ₂ and A _{3 of} 3b and the tip surfaces B _{1 of} the spherical crown portions 2a and 3a partially protruding inward on the other surface B. It is fixed. When the distance (interval) between the side surface bulging portions 2c3c is E and the width of the mating flat plate-shaped terminal piece 4 is F, E and F are

[0016]

(Equation 4)

The structure shown in FIG. The material of the terminal strip in the present invention has a thickness of 0.1
5-1.0mm, Vickers hardness 250-450H
It is made of a metal material having V and a spring elastic modulus of 30 to 60 kgf / mm ² .

The plate thickness is set to 0.15 to 1.0 mm because
This is because, when a terminal piece is attached to the terminal surface of the battery by a method such as laser welding, resistance welding, or ultrasonic welding, the terminal piece is welded and fixed without adversely affecting the battery internal constituent material due to heat generation or the like. If the sheet thickness exceeds 1.0 mm, a large amount of heat is generated during welding, which adversely affects the internal material of the battery. Further, even if welding can be performed, sufficient welding strength that can withstand this kind of use cannot be obtained. When the plate thickness is less than 0.15 mm, regarding the fixing strength of the terminal piece,
Even a material in the range of the present invention having a spring elastic modulus of 30 to 60 kgf / mm ² and a Vickers hardness of 250 to 450 HV has no problem in a normal vibration state, but is mounted in a vibration state during transportation such as truck transportation. It is not preferable because it becomes insufficient in strength and easily comes off.

The Vickers hardness is 250 to 450H.
V, the spring elastic modulus is set to 30 to 60 kgf / mm ² because the terminal material of this type has a Vickers hardness of 2 conventionally.
A material having less than 50 HV and a spring limit of less than 30 kgf / mm ² was used. However, such a material is weak in strength for use in the configuration and application of the present invention, and has a spring limit of less than 30 kgf / mm ² . In materials, battery mounting,
If the spring restoring force is embrittled by repeated removal and the Vickers hardness is less than 250 HV, the material is soft when the terminal pieces are inserted and detached, and the sheet thickness is reduced to 0.
If the material is less than 15 mm, the terminal will be deformed, and if the Vickers hardness is more than 450 HV, the hardness of the material will be too hard when vibration is applied, and the terminal pieces often break due to stress concentration. Is.

Therefore, as the terminal piece material and the adhered terminal material of this kind, the thickness of the terminal piece material and the adhered terminal material are almost the same, the plate thickness is in the range of 0.15 mm to 1.0 mm, and the Vickers hardness is 250. ˜450 HV, and spring elasticity in the range of 30 to 60 kgf / mm ² are required.

Next, using the terminal strip material of the present invention and the conventional terminal strip material, 100 manganese dioxide lithium batteries CR2020 each having a terminal as shown in FIG. 1 were produced and mounted on a substrate, Wearing / removing 50 times and 500
Of contact failure (%) and MIL-S
Tables 1, 2 and 3 show the occurrence rate (%) of battery detachment when a vibration test was performed under the vibration test conditions of TD-202E.

Table 1 finds the relationship between the distance E between the bulging portions provided on the side surface portion C in the locking portion space D according to the present invention and the plate width F of the mounted material which is a flat plate terminal piece. The experimental results are shown, which are results when a nickel material having a plate thickness of 0.15 mm, a Vickers hardness of 350 HV and a spring elastic modulus of 35 kgf / mm ² is used as the terminal piece material. Table 2 shows that the sheet thickness is 0.
5mm, Vickers hardness 300HV, spring elasticity 32k
The result when a nickel material of gf / mm ² is used is shown. Table 3 shows that the thickness of the terminal piece material to be mounted is 0.3 mm, and the terminal piece material having physical properties according to the present invention, specifically, a Vickers hardness of 300 HV and a spring elasticity of 40 kgf /
and those having a mm ^2, a conventional terminal strip material having a physical property value, specifically shows the comparison result of using Vickers hardness 230HV, those having spring elasticity 25 kgf / mm ² as a terminal strip material I have. In the case of Table 3, the terminal piece material used was stainless steel. Also, the terminal was processed to have an arc-shaped bent portion having a radius of curvature twice as large as the plate thickness, and the convex portion had the same height as the plate thickness.

[0023]

[Table 1]

[0024]

[Table 2]

[0025]

[Table 3]

As is apparent from Tables 1 and 2, in the case of the present invention, the relationship between the distance E between the bulging portions provided on the side surface portion C and the plate width F of the mounted material is as described above. When the relations were satisfied, the contact failure occurrence rate and the battery detachment occurrence rate were zero or extremely low, which was sufficient for practical use.

Further, as is clear from Table 3, in the case of the product of the present invention, the contact failure occurrence rate and the battery detachment occurrence rate are zero, which is extremely superior to the conventional product.

Further, in the examples shown in Table 3, the thickness is 0.3.
Although an example using a stainless steel material of mm was shown, as a material other than stainless steel, nickel, copper, steel, phosphor bronze, brass, aluminum copper or the like having physical properties within the range according to the present invention,
Or, it is found from experiments that composite materials such as these clad materials or surface-treated materials have the same effects as the experimental results shown in Tables 1, 2, and 3 and can be used. doing.

In the above embodiment, one surface A of the terminal piece is used.
The distance between the arc-shaped bent tip portions A ₂ and A ₃ and the tip surface B ₁ of the convex portion on the other surface B is almost the same as the thickness of the flat plate terminal piece 4, and the arc-shaped bent portion is 3
As the structure is divided into several parts, the insertion and fitting pressure of the flat plate terminal piece is made as small as possible to facilitate the insertion work. Further, the shape of the bulging portion formed on the side surface portion C according to the present invention is an arc-shaped bulging portion as shown in FIG. 11- (A) as a sectional view taken along the line BB in FIG. . Experiments have shown that the bulging portion has a similar effect even in the configurations shown in FIGS. 11- (B) and 11- (C) or similar configurations thereof. In addition, this bulge is
The starting point of the bulge is in the same direction as the mating terminal insertion direction. In this manner, the mating terminal can be more smoothly inserted.

Next, 10 pieces of manganese dioxide lithium batteries CR2020 with terminals as shown in FIG. 6 are prepared by using the terminal piece material in another embodiment of the present invention and the conventional terminal piece material.
Create 0 each, mount it on the board, and attach / detach 5
Occurrence rate of contact failure after repeating 0 times and 500 times (%)
Tables 4, 5 and 6 show the battery detachment occurrence rates (%) when the vibration test was performed under the vibration test conditions of MIL-STD-202E and MIL-STD-202E.

Table 4 shows the relationship between the distance E between the bulging portions provided on the side surface portion C in the locking portion space D according to the present invention and the plate width F of the mounted material which is a flat terminal piece. The experimental results are shown, showing the results when a nickel material having a plate thickness of 0.15 mm, a Vickers hardness of 350 HV and a spring elastic modulus of 35 kgf / mm ² is used as the terminal piece material. Table 5 shows a plate thickness of 0.5 mm, Vickers hardness of 300 HV, and spring elastic modulus of 3.
The result when a nickel material of ² kgf / mm ² is used is shown. Table 6 shows the terminal piece material to be mounted having a plate thickness of 0.3 mm, and the terminal piece material having the physical properties according to the present invention, specifically, Vickers hardness of 300 HV, spring elastic modulus of 40 kgf.
/ Mm ² and a terminal strip material with conventional physical properties, specifically, a Vickers hardness of 230 HV and a spring elastic modulus of 25 kgf / mm ² are used as the terminal strip material. ing. In addition, in the case of Table 6, the stainless steel material was used for all the terminal strip materials. In addition, the arc-shaped bent portion of the terminal was processed to have a radius of curvature R that was twice the plate thickness, and the spherical crown portion had the same height as the plate thickness.

[0032]

[Table 4]

[0033]

[Table 5]

[0034]

[Table 6]

As is clear from Tables 4 and 5, in the case of the present invention, the relationship between the distance E between the bulging portions provided on the side surface portion C and the plate width F of the mounted material is as described above. When the relations were satisfied, the contact failure occurrence rate and the battery detachment occurrence rate were zero or extremely low, which was sufficient for practical use.

Further, as is clear from Table 6, in the case of the product of the present invention, the contact failure occurrence rate and the battery detachment occurrence rate are zero, which is extremely superior to the conventional product.

In the examples shown in Table 6, the thickness is 0.3.
Although an example using a stainless steel material of mm was shown, as a material other than stainless steel, nickel, copper, steel, phosphor bronze, brass, aluminum copper or the like having physical properties within the range according to the present invention,
Alternatively, composite materials such as these clad materials, or surface-treated materials thereof have the same effects as the experimental results shown in Tables 4, 5, and 6, and are found to be usable. doing.

In the above embodiment, one surface A of the terminal piece is
The distance between the arc-shaped bent tip portions A ₂ and A ₃ and the tip surface B _{1 of the} spherical crown portion on the other surface B is equal to the flat terminal piece 4
And the arc-shaped bent portion is divided into three parts to make the insertion and fitting pressure of the flat plate terminal piece as small as possible to facilitate the insertion work. Further, the shape of the bulging portion formed on the side surface portion C according to the present invention is an arc-shaped bulging portion as shown in FIG. 12- (A) as a sectional view taken along the line BB in FIG. . Experiments have shown that the bulging portion has a similar effect even in a form shown in FIGS. 12- (B) and 12- (C) or a similar form thereof. In addition, this bulge is
The starting point of the bulge is in the same direction as the mating terminal insertion direction. In this manner, the mating terminal can be more smoothly inserted.

FIG. 13 is a schematic side view showing another embodiment of the present invention, in which the circuit board 5 is provided with the terminal mounting member 6 according to the present invention. FIG. 3 shows a state in which the battery mounted on the negative electrode terminal surface is inserted into the terminal mounting member 6 provided on the circuit board, and the configuration of the terminal mounting member 6 is such that the arc-shaped bent portion is divided into two parts. It has been proved by the same experiment as above that the same effect as described above can be obtained by adopting the configuration.

[0040]

As described above, according to the present invention, when holding a coin-shaped, button-shaped, cylindrical, or prismatic battery, slidable bulging portions provided on both side surfaces and one surface At a peripheral edge part is divided into a plurality of parts so as to form an opening and is bent in an arc shape, and on the other surface, a convex part or a spherical crown part partially projected inward is formed. Hold the mating terminal in the locking space,
By crimping and fixing, a strong spring pressure is always applied to the mating terminal to exert a force that pinches the side surface and surface, which has high vibration resistance and long-term contact with the mating terminal. Good electrical contact can be maintained, and since the contacting part when the mating terminal is inserted is a bulging part that can slide, it is extremely easy to remove and insert the battery. Is.

[Brief description of the drawings]

FIG. 1 is a front view of a coin-type battery provided with a terminal strip according to the present invention.

FIG. 2 is a plan view of a coin-type battery provided with a terminal strip according to the present invention.

FIG. 3 is a side view of a coin-type battery provided with a terminal strip according to the present invention.

FIG. 4 is a front view of a terminal piece according to the present invention in which a flat terminal piece of a mating device is fitted.

FIG. 5 is a cross-sectional view of a main part in a state where a flat terminal piece of a mating device is fitted to the terminal piece according to the present invention.

FIG. 6 is a front view of a coin battery having another terminal piece according to the present invention.

FIG. 7 is a plan view of a coin battery having another terminal piece according to the present invention.

FIG. 8 is a side view of a coin battery having another terminal piece according to the present invention.

FIG. 9 is a front view of another terminal piece according to the present invention in which a flat terminal piece of a counterpart device is fitted.

FIG. 10 is a cross-sectional view of essential parts showing a state in which a flat plate terminal piece of a counterpart device is fitted to another terminal piece according to the present invention.

FIG. 11 is a cross-sectional view showing an example of the shape of the bulging portion in the present invention.

FIG. 12 is a cross-sectional view showing an example of the shape of another bulging portion according to the present invention.

FIG. 13 is a schematic side view showing another embodiment of the present invention.

[Explanation of symbols]

1 Battery 2, 3 Terminal piece 2a, 3a Partly inwardly projecting convex part, or ball cap part 2b, 3b Part 2c, 3c bent into an arc shape Swelling part 2d, 3d provided on the side surface part Terminal insertion guide 4 Plate-shaped terminal piece 5 Circuit board 6 Terminal mounting member provided on the circuit board 7 Plate-shaped terminal A ₁ Opening A ₂ , A ₃ Tip surface of arc-shaped bent portion B ₁ Ball cap or Tip of convex part C Side part D Locking part space

Claims (10)

[Claims] 1. A terminal-equipped battery comprising a terminal piece on the surface of a terminal of the battery, wherein the terminal piece of the battery has a locking portion to which a flat plate-shaped terminal piece provided in a mounted device is fitted. The locking portion is provided on both side surfaces of the terminal piece of the battery, and has a slidable bulge portion that presses both side surfaces of the flat plate terminal piece, and an opening portion is formed on one surface. A battery with a terminal, wherein a peripheral edge portion is formed by a plurality of divided arc-shaped bent portions and a convex portion that partially protrudes inward on the other surface. 2. A battery with a terminal, wherein the terminal surface of the battery is provided with a terminal piece, wherein the terminal piece of the battery is provided with a locking portion to which a flat terminal piece provided in a device to be mounted is fitted. The locking portion is provided on both side surfaces of the terminal piece of the battery, and has a slidable bulge portion that presses both side surfaces of the flat plate terminal piece, and an opening portion is formed on one surface. A battery with a terminal, wherein a peripheral edge portion is formed by a plurality of divided arc-shaped bent portions and a spherical crown portion that partially protrudes inward on the other surface. 3. A circuit board having a mounting member for mounting a flat plate terminal piece provided on a terminal surface of a battery, wherein the flat plate terminal piece provided on the terminal surface of the battery is fitted to the mounting member. A bulging portion provided on both side surfaces of a mounting member, which is slidable and presses both side surfaces of a flat plate terminal piece provided on a terminal surface of a battery. And a portion of which the peripheral edge portion is bent into a plurality of arcs so as to form an opening on one surface, and a convex portion which partially protrudes inward on the other surface. A circuit board characterized by being formed. 4. A circuit board having a mounting member for mounting a flat terminal piece provided on a terminal surface of a battery, wherein the mounting member is fitted with the flat terminal piece provided on the terminal surface of the battery. A bulging portion provided on both side surfaces of a mounting member, which is slidable and presses both side surfaces of a flat plate terminal piece provided on a terminal surface of a battery. And a portion whose peripheral edge is bent into a plurality of arcs so as to form an opening on one surface, and a spherical crown portion partially protruding inward on the other surface. A circuit board characterized by being formed. 5. A terminal piece of a battery with a terminal is 0.15 to 1.0.
The battery with a terminal according to claim 1 or 2, which has a plate thickness in the range of mm, a Vickers hardness in the range of 250 to 450 HV, and a spring elastic modulus in the range of 30 to 60 kgf / mm ² . 6. The circuit board mounting member is 0.15 to 1.0.
The circuit board according to claim 3 or 4, having a plate thickness in the range of mm, a Vickers hardness in the range of 250 to 450 HV, and a spring elastic modulus in the range of 30 to 60 kgf / mm ² . 7. The relationship between F and E, where E is the distance between the bulging portions provided on both side surfaces of the terminal piece of the battery with terminals and F is the width of the flat terminal piece of the mounted device. However, The battery with a terminal according to claim 1, wherein 8. The relationship between F and E, where E is the distance between the bulging portions provided on both side surfaces of the mounting member and F is the width of the flat plate terminal piece provided on the terminal surface of the battery. However, 5. The circuit board according to claim 3, wherein 9. A material for a terminal piece of a battery with a terminal is selected from stainless steel, nickel, copper, steel, phosphor bronze, brass, aluminum copper alone, a composite material thereof, and a surface-treated material thereof. And the battery with a terminal according to claim 2. 10. A material for a mounting member of a circuit board is selected from stainless steel, nickel, copper, steel, phosphor bronze, brass, aluminum copper alone, a composite material thereof, and a surface-treated material thereof. Item 4. The circuit board according to Item 4.