JPH117925A - Manufacture of organic electrolyte battery with terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a battery from deteriorating during solder re-flow by manufacturing a metallic auxiliary can and fixing it to a power generation element with a lead terminal via an insulation material. SOLUTION: This battery is manufactured as follows. After a lead terminal 2 is welded to a power generation element 1 assembled in combination with constituent elements such as positive active material, negative electrode active substance, separator, electrolyte, positive electrode can, negative electrode can, gasket or the like or is mounted by adhesion or the like with a conductive adhesive, the power generation electrode 1 is arranged and fixed inside of a metallic auxiliary can 3 fabricated by deep throttle or the like via an insulation material 4. For the insulation material 4 intervened between the metallic auxiliary can 3 and the power generation electrode 1, an insulation material 4 is adhered to one face of an element material of the auxiliary can 3 in advance, after which the can is manufactured or the insulation material 4 is applied and bonded to the inside of the manufactured auxiliary can 3. Alternatively, an adhesive or an insulation material such as adhesive material is arranged at the outside of the power generation element 1, after which the auxiliary can 3 is covered and fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an organic electrolyte battery with terminals having high temperature resistance characteristics by using a plastic mold having a metal sheath can or a metal mold provided on the outside.

[0002]

2. Description of the Related Art Although an organic electrolyte battery with terminals is often used by being mounted on a printed circuit board, in most cases, an organic electrolyte battery with terminals welded to a power generating element has been used in most cases. Some were molded with plastic, but only plastic was used for the mold.

[0003]

As described above, in the conventional battery, the lead terminal is welded to the power generating element or only the plastic mold is used. Therefore, there is a problem that the battery is deteriorated at the time of solder reflow.

[0004]

In order to solve the above-mentioned problems, the present invention manufactures a metal sheath can and fixes it to a power generating element having lead terminals via an insulator. Alternatively, there is provided a two-system means in which a power generating element portion and a lead terminal except for a terminal portion of the terminal are molded with plastic, and a metal is disposed outside thereof.

[0005] In the first method, a power generating element having lead terminals welded thereto and a metal sheath can are arranged at predetermined positions, and plastic is injected and solidified into the metal sheath can in this state. An insulator is previously provided inside the sheath so that the metal sheath can and the power generating element are not electrically short-circuited. In the second method, a plastic mold is preliminarily applied to the power generating element to which the lead terminals are welded, and a metal is disposed outside the molded plastic. As a means for arranging a metal on the outside of a molded plastic, a method for covering a sheath can, a method for applying a metal coating, and a method for attaching a metal foil are provided.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power generating element assembled by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolytic solution, a positive electrode can, a negative electrode can, and a gasket.
After attaching the lead terminals by means such as welding or bonding with a conductive adhesive, the above-described power generating element is coordinated and fixed inside a metal sheath can made by a method such as deep drawing through an insulator. The insulator to be interposed between the metal sheath can and the power generation element is manufactured by first attaching the insulator to one side of the sheath can material and then manufacturing the can, or by applying and fixing the insulator inside the manufactured sheath can. . Alternatively, an insulating material such as an adhesive or a sticking material is provided outside the power generating element, and then the case is covered and fixed.

In a second embodiment of the present invention, after the power generating element to which the above-described lead terminal is attached is arranged inside a metal sheath can, plastic is injected into the sheath can and solidified. At the stage of disposing the power generating element inside the metal sheath can, an insulator is previously arranged inside the sheath can so as not to cause an electrical short circuit.
As a means for the arrangement, an insulator is attached to one side of the material of the sheath can, and then deep drawing is performed to dispose the insulator inside the sheath can. Alternatively, an adhesive or a sticking material is attached to the outside of the power generating element to which the lead terminal is attached, and then the unit is fixed to the sheath can.

As a third embodiment of the present invention, a plastic mold is preliminarily applied to the power generating element to which the above-described lead terminal is attached, and a metal is provided outside the mold. As a means for disposing the metal, means for inserting the above-described molded power generation element into a metal sheath can, applying metal to the outside of a plastic mold, or attaching a metal foil is taken.

[0009]

An embodiment will be described with reference to the drawings.

[0010]

[Embodiment 1] FIG. 1 is a manufacturing process diagram according to claim 1 of the present invention. FIG. 2 shows an example of an organic electrolyte battery with terminals according to the present invention using a lithium ion battery type MS621 as a power generation element manufactured according to this process. In the figure,
The power generating element 1 was manufactured by a conventional manufacturing process using a positive electrode mixture, a negative electrode mixture, an electrolytic solution, a separator, a positive electrode can, a negative electrode can, and a gasket as main components. The lead terminal 2 was welded to this with a laser welding device. The material thickness of the lead terminal 2 is 0.15 mm. An ultraviolet-curable epoxy resin-based solder resist insulating agent was applied and solidified as an insulating material 4 on one side of an aluminum material having a thickness of 0.1 mm.
The sheath can 3 was manufactured from the above-mentioned material by deep drawing so that the insulator 4 was inside. The adhesive 5 was attached to a part of the power generating element 1 and inserted and fixed in the sheath can 3.

[0011]

Embodiment 2 As in Embodiment 1, a lithium ion battery,
An organic electrolyte battery with terminals according to claim 2 of the present invention using Model MS621 was manufactured. Its configuration is the same as that of FIG. A sheath can 3 was manufactured using an aluminum plate having a thickness of 0.1 mm as a raw material, and a thermosetting epoxy resin-based solder resist insulating material was applied as an insulator 4 to the inside of the sheath can to be cured and fixed. Next, an adhesive 5 was adhered to a part of the power generating element 1 to which the lead terminal 2 was attached, and was inserted and fixed in the sheath can 3.

[0012]

Third Embodiment FIG. 3 shows an embodiment of an organic electrolyte battery with terminals according to the third embodiment of the present invention, in which a lithium ion battery MS621 is used as a power generating element, as in the first embodiment. The sheath can 3 was manufactured by deep drawing from a clad material of aluminum and stainless steel having a thickness of 0.15 mm so that the aluminum was on the outside. Next, an insulating tape and a double-sided adhesive tape as an insulator 15 were attached to a part of the outer periphery of the power generating element 1 to which the lead terminals 2 were attached, and the resultant was inserted into the sheath can 3 and fixed.

[0013]

Fourth Embodiment FIG. 4 shows an embodiment of an organic electrolyte battery with terminals according to the fourth embodiment of the present invention, in which a lithium ion battery MS621 is used as a power generating element, as in the first embodiment. The sheath can 3 was manufactured by deep drawing so that the stainless steel side of a clad material of aluminum and stainless steel having a thickness of 0.15 mm was inside. The insulator 4 and the adhesive 10 were adhered to the power generating element 1 to which the lead terminals 2 were attached, and inserted and fixed in the sheath can 3 described above. In FIG. 4A, the epoxy resin 6 was injected and solidified into the sheath can 3 with the lower side from which the lead terminals 2 were exposed in the side view facing upward.

[0014]

Fifth Embodiment FIG. 5 shows an embodiment of an organic electrolyte battery with terminals according to the fifth embodiment of the present invention, in which a lithium ion battery MS621 is used as a power generating element. An ultraviolet-curable solder resist insulator was applied and cured as an insulator 4 on the stainless steel side of the clad material of aluminum and stainless steel having a thickness of 0.15 mm. Next, the sheath can 3 was manufactured by deep drawing so that the insulating material was on the inside. Lead terminal 2
The adhesive 5 was adhered to the power generating element 1 to which was attached, and was inserted and fixed in the sheath can 3. The epoxy resin 6 was injected and solidified into the sheath can 3 with the lead terminal 2 side up.

[0015]

Embodiment 6 The same lithium ion battery MS as in Embodiment 1
An organic electrolyte battery with terminals according to claim 6 of the present invention using 621 as a power generating element was manufactured. Its shape is the same as that shown in FIG. The sheath can 3 was manufactured by deep drawing so that the stainless steel side of a clad material of aluminum and stainless steel having a thickness of 0.15 mm was inside. A temperature-curable epoxy resin-based solder resist insulating material was applied as an insulator 4 on the inner side of the sheath can 3, and was cured and fixed. An adhesive 10 instead of the adhesive 5 was attached to the power generating element 1 to which the lead terminal 2 was attached, and was inserted and fixed in the above-mentioned sheath can. The side from which the lead terminals 2 are exposed faces upward, and the epoxy resin 6 is covered with the sheath can 3.
And solidified.

[0016]

Embodiment 7 The same lithium ion battery MS as in Embodiment 1
An organic electrolyte battery with terminals according to claim 7 of the present invention using 621 as a power generating element was manufactured. The shape is shown in FIG. The sheath can 3 was manufactured by deep drawing using an aluminum material having a thickness of 0.1 mm. The power generating element 1 to which the lead terminal 2 was attached was placed in a resin molding jig with the side from which the lead terminal 2 was exposed facing upward, and an epoxy resin 6 was injected into the jig and solidified. The above-mentioned sheath can 3 was covered and fixed on the outside of the solidified resin.

[0017]

Embodiment 8 The same lithium ion battery MS as in Embodiment 1
An organic electrolyte battery with terminals according to claim 8 of the present invention using 621 as a power generating element was manufactured. The shape is shown in FIG. The power generating element 1 to which the lead terminal 2 was attached was placed in a resin molding jig with the side from which the lead terminal 2 was exposed facing upward, and an epoxy resin 6 was injected into the jig and solidified. A metal paint 7 mainly composed of aluminum powder was applied to the outside of the solidified resin.

[0018]

Embodiment 9 The same lithium ion battery MS as in Embodiment 1
An organic electrolyte battery with terminals according to claim 9 of the present invention using 621 as a power generating element was manufactured. The shape is shown in FIG. The power generating element 1 to which the lead terminal 2 was attached was placed in a resin molding jig with the side from which the lead terminal 2 was exposed facing upward, and an epoxy resin 6 was injected into the jig and solidified. A metal foil 8 mainly composed of aluminum powder was attached to the outside of the solidified resin.

[0019]

Embodiment 10 The same lithium ion battery M as in Embodiment 1
Claim 4 of the present invention wherein S621 is a power generating element.
An organic electrolyte battery with terminals was fabricated in which the battery was placed parallel to the substrate to which it was attached. The shape is shown in FIG. The sheath can 3 was manufactured by deep drawing using an aluminum material having a thickness of 0.1 mm. The power generating element 1 to which the lead terminal 2 was attached was placed in a jig for molding the resin 6 with the side from which the lead terminal 2 was exposed facing upward, and an epoxy resin was injected into the jig and solidified. The above-mentioned sheath can 3 was covered and fixed on the outside of the solidified resin.

[0020]

The above-described Examples 1 to 10 and the conventional product were actually passed through a solder reflow furnace to confirm the deterioration and destruction of the battery quality.

[0021]

[Table 1]

Table 1 shows the results. Test batteries are 20
The numerical value in the table is the defect rate. The present invention is embodied in the form described above, and has the effect of imparting heat resistance that can be used in a solder reflow furnace to an organic electrolyte battery with terminals, as shown in the experimental results in Table 1.

[Brief description of the drawings]

FIG. 1 is a manufacturing process diagram of Example 1 of the present invention.

FIG. 2 is a sectional view showing an embodiment of the present invention.

FIG. 3 is a sectional view showing an embodiment of the present invention.

FIG. 4 is a sectional view showing an embodiment of the present invention.

FIG. 5 is a sectional view showing an embodiment of the present invention.

FIG. 6 is a sectional view showing an embodiment of the present invention.

FIG. 7 is a sectional view showing an embodiment of the present invention.

FIG. 8 is a sectional view showing an embodiment of the present invention.

FIG. 9 is a sectional view showing an embodiment of the present invention.

[Description of Signs] 1 Power generation element 2 Lead terminal 3 Sheath can 4 Insulator 5 Adhesive 6 Resin 7 Metal coating 8 Metal foil 10 Adhesive 15 Insulator

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H01M 10/40 H01M 10/40 Z

Claims (9)

[Claims] 1. A method for producing an organic electrolyte battery with terminals, comprising the following steps. Step 1: a step of assembling a power generating element by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolyte, a positive electrode can, a negative electrode can, and a gasket. Step 2: attaching a lead terminal to the power generating element. Step 3: a step of covering one side of the material of the metal sheath can with an insulator. Step 4: a step of manufacturing a metal sheath can from the above-described material of the metal sheath can so that the insulator is on the inside. Step 5: fixing the power generating element with the lead terminal inside the metal sheath can. 2. A method for producing a terminal-equipped organic electrolyte battery, comprising the following steps. Step 1: a step of assembling a power generating element by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolyte, a positive electrode can, a negative electrode can, and a gasket. Step 2: attaching a lead terminal to the power generating element. Step 3: a step of manufacturing a metal sheath can. Step 4: a step of disposing an insulator inside the above-mentioned metal sheath can. Step 5: fixing the power generating element with the lead terminal inside the metal sheath can. 3. A method for producing an organic electrolyte battery with terminals, comprising the following steps. Step 1: a step of assembling a power generating element by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolyte, a positive electrode can, a negative electrode can, and a gasket. Step 2: attaching a lead terminal to the power generating element. Step 3: a step of manufacturing a metal sheath can. Step 4: arranging an insulator on the power generating element having the lead terminal. Step 5: fixing the power generating element with the metal sheath can and the lead terminal. 4. A method for producing a terminal-equipped organic electrolyte battery, comprising the following steps. Step 1: a step of assembling a power generating element by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolyte, a positive electrode can, a negative electrode can, and a gasket. Step 2: attaching a lead terminal to the power generating element. Step 3: a step of manufacturing a metal sheath can. Step 4: A step of injecting and solidifying plastic into the above-mentioned sheath can in a state where the power generation element with the lead terminal is positioned inside the metal sheath can. 5. A method for producing an organic electrolyte battery with terminals, comprising the following steps. Step 1: a step of assembling a power generating element by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolyte, a positive electrode can, a negative electrode can, and a gasket. Step 2: attaching a lead terminal to the power generating element. Step 3: a step of covering one side of the material of the metal sheath can with an insulator. Step 4: a step of manufacturing a metal sheath can from the above-described material of the metal sheath can so that the insulator is on the inside. Step 5: A step of injecting and solidifying plastic into the above-mentioned sheath can in a state where the power generating element with the lead terminal is positioned inside the metal sheath can. 6. A method for producing an organic electrolyte battery with terminals, comprising the following steps. Step 1: a step of assembling a power generating element by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolyte, a positive electrode can, a negative electrode can, and a gasket. Step 2: attaching a lead terminal to the power generating element. Step 3: a step of manufacturing a metal sheath can. Step 4: a step of providing an insulator inside the metal sheath can. Step 5: A step of injecting and solidifying plastic into the above-mentioned sheath can in a state where the power generating element with the lead terminal is positioned inside the metal sheath can. 7. A method for producing an organic electrolyte battery with terminals, comprising the following steps. Step 1: a step of assembling a power generating element by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolyte, a positive electrode can, a negative electrode can, and a gasket. Step 2: attaching a lead terminal to the power generating element. Step 3: A step of plastic-molding the power generating element to which the lead terminals are attached, except for the end portions of the lead terminals. Step 4: a step of covering a metal sheath can on the outside of the plastic mold section. 8. A method for producing a terminal-equipped organic electrolyte battery, comprising the following steps. Step 1: a step of assembling a power generating element by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolyte, a positive electrode can, a negative electrode can, and a gasket. Step 2: attaching a lead terminal to the power generating element. Step 3: A step of plastic-molding the power generating element to which the lead terminals are attached, except for the end portions of the lead terminals. Step 4: a step of applying a metal powder coating to the outside of the plastic mold section. 9. A method for producing an organic electrolyte battery with terminals, comprising the following steps. Step 1: a step of assembling a power generating element by combining components such as a positive electrode active material, a negative electrode active material, a separator, an electrolyte, a positive electrode can, a negative electrode can, and a gasket. Step 2: attaching a lead terminal to the power generating element. Step 3: A step of plastic-molding the power generating element to which the lead terminals are attached, except for the end portions of the lead terminals. Step 4: a step of attaching a metal foil to the outside of the plastic mold section.