JP2002184464A - Battery and method for inspecting and identifying battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent shipping of defective articles and to easily identify the contents to be inspected during re-inspection. SOLUTION: Defective item data is either printed or sealed in a predetermined position, together with a fabrication lot number. By simply viewing a battery as a product, a determination can be made as to whether or not it is defective. The shipping of defective articles into the market can be prevented and the contents to be inspected during the re-inspection can be easily identified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery suitable for use in a battery using an aluminum laminate case and a method for inspecting and identifying the battery.

[0002]

2. Description of the Related Art Conventionally, in a battery or the like using an aluminum laminated case, printing can be performed on the aluminum laminated case, and a name of a maker, a model of the battery, and a manufacturing rod number are printed on the aluminum laminated case.

In a battery using this aluminum laminate case, when there is a defective item in an inspection process in manufacturing, the record is recorded as management data separately from the battery as a product. I was

[0004]

For this reason, it was not possible to determine whether the battery was a good product or a defective product just by looking at the battery, which was a manufactured product, and there was a risk that the defective product might flow out to the market.

[0005] In addition, at the time of re-inspection, there is a disadvantage that the inspection contents cannot be identified unless the contents of the management data are confirmed.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to prevent the outflow of defective products and to make it easy to identify the contents of inspection at the time of reinspection.

[0007]

According to the battery of the present invention, defective item data together with a manufacturing rod number is printed or affixed to a predetermined position.

According to the present invention, the defective item data is printed or affixed to a predetermined position of the battery, so that the defective product can be determined just by looking at the battery as a product, and the defective product flows to the market. In addition, the inspection content at the time of re-inspection can be easily identified only by looking at the defective item data printed or affixed to the battery.

Further, the battery inspection and identification method of the present invention is a battery inspection and identification method in which the battery thickness, internal resistance value, and the like are sequentially inspected. The defective item data is printed or pasted on a predetermined position of the battery, and the defective item is identified by the printing or pasting the sticker.

According to the present invention, defective item data is printed or pasted on a predetermined position of the battery, and the defective item is identified by this printing or pasting the sticker. Then, you can judge the defective product,
Defective products can be prevented from leaking to the market, and the inspection contents at the time of re-inspection can be easily identified only by looking at the defective item data printed or affixed to the battery.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a battery and a method for inspecting and identifying a battery according to the present invention will be described with reference to the drawings.

As a battery using an aluminum laminate case, a non-aqueous gel polymer secondary battery 1 as shown in FIG. 2 has been proposed. This non-aqueous gel polymer secondary battery 1
A positive electrode having a positive electrode active material layer formed on a positive electrode current collector of aluminum foil, a negative electrode having a negative electrode active material layer formed on a negative electrode current collector of copper foil, An electrolyte-containing gel layer formed on the negative electrode active material layer,
A porous separator (for example, a microporous film made of polyethylene or polypropylene) provided between the electrolytic solution-containing gel layers, and the electrolytic solution-containing gel layers on the positive electrode side and the negative electrode side are interposed via the separator. It has an electrode body with a structure that is superimposed on each other.

In the electrode body having this structure, a positive electrode lead 3 made of aluminum and a negative electrode lead 2 made of nickel are joined to a positive electrode body and a negative electrode body, respectively. Then, as shown in FIG. Is sealed with a pair of aluminum laminated films 4 and 5 constituting the above. In FIG. 2, reference numerals 2a and 3a denote sealer coats for insulating the negative electrode lead 2 and the positive electrode lead 3 from the aluminum laminate cases 4 and 5, respectively.

Measurement of the thickness D for the inspection of the non-aqueous gel polymer secondary battery 1, measurement of the internal resistance value, measurement of the width W and length L of the battery, the distance between the positive electrode lead 3 and the negative electrode lead 2 The measurement and the measurement of the respective lengths of the positive electrode lead 3 and the negative electrode lead 2 are performed using an inspection disk 10 as shown in FIG.

The inspection disk 10 has eight battery holders 10a, 10b ‥‥ 10h arranged at equal intervals along the outer circumference.
The inspection disk 10 is intermittently rotated clockwise at intervals of a predetermined time T ₀ , and rotates once in eight steps. That is, this inspection disk 10 is 1
When rotated step by step, battery holders 10a, 10b
{10h rotates clockwise one step at a time, but must be in any of the battery holders 10a, 10b at the current position.
$ 10h will correspond.

The present inspection disk 10 as shown in FIG.
In the position of the battery holding portion 10a, the product 1
In this position, the batteries 1 as products from the conveyor 11 for transfer are transferred from the conveyor 11 to the inspection disk 10 one by one to receive the batteries 1 as new products. The battery 1 which is a product of the battery holding portion 10a of the inspection disk 10
Is automatically performed mechanically within a predetermined time.

At the next step, which is the current position of the battery holding portion 10b of the test disk 10 as shown in FIG. 3, the thickness D of the battery 1 as this product is measured. The measurement of the thickness D is performed by a measuring device similar to the conventional one.
When the thickness is determined to be defective by the thickness measurement, “T” is printed by, for example, ink jet at the position of the battery holding unit 10f in the current state in a later step. This print “T”
As shown in FIG. 1B, the process is performed on the back surface of the aluminum laminate case of the battery 1 using the aluminum laminate case, in a portion close to the already printed manufacturing rod number 1a.

On the back surface of the aluminum laminate case of the battery 1 using this aluminum laminate case, as shown in FIG. 1, a manufacturer name 1b, a battery type 1c, and the like are also printed as shown in FIG.

In the next step, the internal resistance value of the battery 1 is measured at the position of the battery holding portion 10c of the test disk 10 as shown in FIG. The measurement of the internal resistance value is performed by a measuring device similar to the conventional one. When the internal resistance value is determined to be defective based on the measurement of the internal resistance value, the position of the battery holding unit 10f in the current state in a later step is determined as shown in FIG.
As shown in FIG. 5, "L" is printed on the back surface of the aluminum laminate case of the battery 1 in the vicinity of the already printed manufacturing rod number 1a by, for example, ink jet.

In the next step, the width W and length L of the battery 1 are inspected at the position of the battery holder 10d of the inspection disk 10 as shown in FIG. The inspection of the width W and the length L of the battery 1 is performed by conventionally known image processing. When it is determined that the battery 1 is defective by inspection of the width W and the length L of the battery 1, the ink is already printed on the back surface of the aluminum laminate case of the battery 1 by, for example, ink jet at the current position of the battery holding unit 10f in a later step. "S" is added to the portion near the manufactured rod number 1a.
Is printed.

At the current position of the battery holding portion 10e of the test disk 10 as shown in FIG. 3 in the next step, the interval between the positive electrode lead 3 and the negative electrode lead 2 of the battery 1 and the positions of the positive electrode leads 3 and The length of each of the negative electrode leads 2 is inspected. The positive electrode lead 3 and the negative electrode lead 2 of the battery 1
The inspection of the distance between the positive electrode lead 3 and the negative electrode lead 2 is performed by a conventionally known image processing. When it is determined that the battery 1 is defective by inspecting the distance between the positive electrode lead 3 and the negative electrode lead 2 or the length of the positive electrode lead 3 and the negative electrode lead 2 of the battery 1, for example, an ink jet printer is used at the current position of the battery holding unit 10f in a later step. As a result, "R" is printed on the back surface of the aluminum laminate case of the battery 1 in the vicinity of the already printed manufacturing rod number 1a.

In the next step, at the current position of the battery holder 10f of the test disk 10 as shown in FIG.
The defective item data “T”, “L”, “S”, and “R” corresponding to the defective item of the defective battery 1 are written on the back of the aluminum laminate case of the battery 1 with the already printed manufacturing rod number 1a. For example, printing is performed on a nearby portion by ink jet. In this case, the defective item data “T”,
"L", "S", and "R" are not printed on non-defective products as shown in FIG. 1A.

In the next step, at the current position of the battery holder 10g of the test disk 10 as shown in FIG.
The non-defective battery 1 is taken out, placed on a conveyor 12 for conveyance, and sent to the next step.

In the next step, at the position of the battery holding portion 10h of the inspection disk 10 as shown in FIG. 3, the defective battery 1 is taken out and transferred to a predetermined tray or the like.

As described above, according to this example, the defective item data "T", "L", "S", and "R" are printed on the back surface of the aluminum laminate case of the defective battery 1. The defective product can be determined just by looking at the aluminum laminate case of the battery 1 as this product, and the defective product can be prevented from leaking to the market.

Further, according to this embodiment, the inspection contents at the time of re-inspection can be easily determined only by looking at the defective item data “T”, “L”, “S”, “R” printed on the battery 1. Can be identified.

In the above example, the defective item data of the defective product is printed on the back surface of the aluminum laminate case of the battery 1. However, it is needless to say that the defective item data may be printed at a predetermined position of the battery.

In the above example, the defective item data is printed in characters, but a bar code may be printed instead. In the above example, the defective item data is directly printed on the battery 1. However, a sticker or the like of the defective item data may be attached to the battery 1.

Further, the present invention is not limited to the above-described example, and may adopt various other configurations without departing from the gist of the present invention.

[0030]

According to the present invention, defective item data is printed or affixed to a predetermined position of a defective battery.
Just by looking at the battery that is this product, you can determine the defective product,
Defective products can be prevented from flowing to the market.

Further, according to the present invention, the inspection contents at the time of re-inspection can be easily identified only by looking at the defective item data printed or affixed to the battery.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of a battery of the present invention.

FIG. 2 is a perspective view showing an example of a battery.

FIG. 3 is a configuration diagram illustrating an example of a battery inspection process.

[Explanation of symbols]

1 ... Battery, 1a ... Manufacturing rod number, 1b ... Manufacturer name, 1c ... Battery model, 2 ... Negative electrode lead, 3 ...
... Positive electrode lead, 4,5 ... Aluminum laminated film,
10 ... Disc for inspection, 10a, 10b ‥‥ 10h ... Battery holder, 11, 12 ... Conveyor

Claims (2)

[Claims] 1. A battery characterized by printing or sticking defective item data together with a manufacturing rod number at a predetermined position. 2. A method for identifying and inspecting a battery in which a battery thickness, an internal resistance value, and the like are sequentially inspected. A battery inspection / identification method, wherein a defective item is identified by printing or sticking at a position, and the printing or sticking is performed.