JP2760298B2 - Battery with terminal and circuit board - Google Patents

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 detachably mounted, and a circuit board that can have a battery detachably mounted.

[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
(Ag laser, excimer laser, carbon dioxide laser welding), etc., were directly soldered 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.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a battery with terminals, which allows easy replacement of the battery, and which is excellent in the fixing strength of the battery, and a circuit board.

[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 mounting member of a flat battery terminal provided on a circuit board, a slidable battery terminal that presses and fixes both side surfaces of the flat terminal to be mounted. A bulge provided on both sides of the piece or provided on both sides of the mounting member, and a tip end face whose peripheral edge is bent into an arc shape so as to form an opening on one side, and With a locking portion formed by a tip portion of a crown portion (convex portion) partially projecting inward on the surface of the cap, and a mounted member protruding inward at the locking portion. The problem is solved by adopting a structure in which the portions are pressed and fixed by the strong and stable elasticity of the portions.

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]

By using a battery with terminals or a circuit board having a mounting member according to the present invention, the battery can be replaced in a detachable manner, and a strong crimped state due to the spring pressure generated by the structure can be always maintained. It is very useful in terms of handling, recycling and the like.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to an example of a battery with terminals provided with terminal strips on the terminal surfaces 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
The other side formed by portions 2b, 3b whose peripheral edges are bent in an arc shape so as to form an opening, and convex portions 2a, 3a partially protruding inward on the other surface B A locking space D for the terminal of the device is provided. 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 strips 4 are formed on the terminal strips 2 and 3 according to the present invention, that is, slidable bulging portions 2c and 3c for pressing and fixing both side surfaces of the flat terminal at both side surfaces C thereof, and an opening on one surface A. part a ₁ with a peripheral edge portion so as to form the same radius of curvature bent arcuately processing portion 2b, the tip section plane a _2, a ₃ of 3b, partially inward on the other surface B It is engaged fixed in pressure contact with the engaging portion space D formed by the convex portion 2a, a front end surface B ₁ of 3a protrudes. 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. The material of the terminal strip in the present invention has a thickness of 0.1
5-1.0mm, Vickers hardness 250-450H
V, made of a metal material having a spring elastic modulus of 30 to 60 kgf / mm ² .

The reason why the plate thickness is set to 0.15 to 1.0 mm is as follows.
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. Further, when the plate thickness is less than 0.15 mm, with respect to the fixing strength of the terminal piece, even if the material is 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, Although there is no problem in the vibration state, it is not preferable because the mounting strength is insufficient in the vibration state at the time of transportation such as truck transportation or the like, and it is easily detached.

The Vickers hardness is 250-450H.
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 may be deformed. If the Vickers hardness exceeds 450 HV, the material may be too hard when vibration is applied, and the terminal piece may be broken due to stress concentration. It is.

Accordingly, as the terminal piece material and the attached terminal material of this kind, the thickness of the terminal piece material and the attached terminal material are substantially the same, the plate thickness is in the range of 0.15 mm to 1.0 mm, and the Vickers hardness is 250. It is required to have a range of ４５０450 HV and a spring elastic modulus of 30 to 60 kgf / mm ² .

Next, using the terminal piece material of the present invention and the conventional terminal piece material, 100 pieces of manganese dioxide lithium batteries with terminals CR2020 as shown in FIG. 1 are respectively manufactured and mounted on a substrate. Attach / detach 50 times and 500 times
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 a 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 material to be mounted, which is a flat terminal piece. The experimental results are shown in the case where a nickel material having a plate thickness of 0.15 mm, a Vickers hardness of 350 HV, and a spring 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 results when a nickel material of gf / mm ² is used are 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.

[0018]

[Table 1]

[0019]

[Table 2]

[0020]

[Table 3]

As is clear 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 material to be mounted is as described above. When the relationship was satisfied, the rate of occurrence of contact failure and the rate of occurrence of battery detachment were zero or extremely low, even if at all, and were sufficiently practical.

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

In the embodiment 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
The distance between the arcuate bent front end portions A ₂ and A ₃ and the front end surface B ₁ of the convex portion on the other surface B is substantially the same as the thickness of the flat terminal piece 4. The pressure is made as small as possible to make the insertion work easy. The shape of the bulging portion formed on the side surface portion C according to the present invention is shown in FIG. 6 as a cross-sectional view taken along a line BB in FIG.
-An arc-shaped bulge as shown in (A). It has been found from experiments that the swelling portion has the same effect even in the forms shown in FIGS. 6- (B) and 6- (C) or similar forms. The bulging portion has a starting point in the same direction as the insertion direction of the mating terminal. In this manner, the mating terminal can be more smoothly inserted.

FIG. 7 shows another embodiment of the present invention.
FIG. 4 is a schematic side view showing an example in which a terminal mounting member 6 according to the present invention is provided on a circuit board 5, and a terminal mounting member 6 having a battery in which a flat terminal 7 is mounted on positive and negative terminal surfaces of a battery 1 is provided on a circuit board; This shows that the same effect as described above can be obtained by configuring the terminal mounting member 6 according to the present invention by the same experiment as described above.

[0026]

As described above, according to the present invention, when holding a battery of coin shape, button shape, cylindrical shape, square shape, etc., a slidable bulging portion provided on both sides and one surface are provided. A mating terminal is formed in a locking portion space formed by a portion whose peripheral edge is bent in an arc shape so as to form an opening, and a convex portion partially protruding inward on the other surface. And by crimping and fixing it, a force is applied to the mating terminal to always hold the side and surface with strong spring pressure. The electrical contact state with the mating terminal can be maintained in good condition, and the contacting part when the mating terminal is inserted is a slidable bulging portion, so that the battery can be removed and inserted. It can be done very easily.

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

FIG. 7 is a schematic side view showing another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Battery 2, 3 Terminal piece 2a, 3a Convex part 2b, 3b Partially bent inwardly protruded part 2c, 3c Swelled part provided in side part 2d, 3d Terminal insertion guide 4 Flat plate Terminal strip 5 Circuit board 6 Terminal mounting member provided on circuit board 7 Flat terminal A ₁ Opening A ₂ , A ₃ Tip face of arc-shaped part B ₁ Tip face of convex part C Side face part D Lock space

Claims (8)

(57) [Claims] 1. A terminal-equipped battery including a terminal strip on a terminal surface of the battery, wherein the terminal strip of the battery includes a locking portion to which a flat terminal strip provided on a device to be mounted is fitted. , The locking portion is provided on both sides of the terminal piece of the battery, a slidable bulging portion that presses both sides of the flat terminal piece,
A terminal formed by a portion obtained by bending a peripheral edge portion into an arc shape so as to form an opening on one surface, and a convex portion protruding partially inward on the other surface. With battery. 2. The battery according to claim 1, wherein the terminal pieces of the battery with terminals are 0.15 to 1.
Thickness of 0mm range, Vickers hardness in the range of 250～450HV, terminal-equipped cell according to claim 1, wherein has a spring modulus ranging 30~60kgf / mm ^2. 3. The relationship between F and E, where E is the distance between the bulging portions provided on both side surfaces of the terminal strip of the terminal-equipped battery, and F is the width of the flat terminal strip of the equipment to be mounted. But, The battery with terminals according to claim 1, wherein 4. The material of the terminal piece of the battery with terminals is selected from stainless steel, nickel, copper, steel, phosphor bronze, brass, aluminum copper alone, a composite thereof, and a surface-treated material thereof. A battery with terminals as described. 5. 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 a flat terminal piece provided on a terminal surface of the battery. A swelling portion provided on both sides of the mounting member, which slidably presses both sides of the flat terminal piece provided on the terminal surface of the battery. And a part formed by bending a peripheral edge into an arc shape so as to form an opening on one surface, and a convex portion protruding partially inward on the other surface. Circuit board. 6. The mounting member for a circuit board, wherein:
Thickness of 0mm range, the circuit board according to claim 5, wherein it has a Vickers hardness in the range of 250～450HV, the spring modulus ranging 30~60kgf / 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 mounting member, and F is the width of the flat terminal piece provided on the terminal surface of the battery. But, 6. The circuit board according to claim 5, wherein 8. The material for the mounting member of the circuit board is selected from stainless steel, nickel, copper, steel, phosphor bronze, brass, aluminum copper alone, a composite thereof, and a surface-treated material thereof. Circuit board.