JP2011086506A - Laminated battery manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laminated battery manufacturing device with high productivity, capable of manufacturing a battery material with a cathode, an anode and a separator stacked. <P>SOLUTION: On preparing a continuous cathode material, a continuous anode material, and a continuous separator material, in advance as a raw material, by respectively and continuously forming a cathode, an anode and a separator via breaking lines, wherein both sides of each breaking line can be separated readily, the laminated battery manufacturing device includes a piling-up means for forming and forwarding a continuous battery material by piling up respective raw materials, in the order of the continuous separator material, the continuous cathode material, the continuous separator material and the continuous anode material, or in order of the continuous separator material, the continuous anode material, the continuous separator material and the continuous cathode material, while breaking lines of respective raw materials are made to coincide with one another; a cutting means for forming a plurality of battery materials by cutting the continuous battery material for each breaking line of the designated number; a retaining means for retaining, by piling up the plurality of battery materials at the number of required laminated layers; a fixing means for fixing by vertically sandwiching a plurality of piled-up battery materials; and a breaking means for tearing off the plurality of fixed battery materials at every breaking line by holding their ends. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus for manufacturing a stacked battery in which sheet-like positive electrodes and negative electrodes are alternately stacked via separators.

  As a battery used in a hybrid vehicle or an electric vehicle, the demand for a stacked lithium ion secondary battery is increasing. This is made by alternately laminating sheet-like positive and negative electrodes through separators. For example, the positive electrode is made of aluminum foil coated with lithium cobalt oxide or lithium nickelate, and the negative electrode is made of copper. The foil is coated with graphite, and a polymer film is used for the separator. By increasing the number of layers, the capacity can be increased.

  By the way, with the increase in demand, the production apparatus has been required to increase the production speed. However, as a production apparatus for a laminated battery represented by the above-described lithium ion secondary battery, conventionally, patent literature There was an apparatus as shown in FIG.

JP 2008-282756 A

  However, the apparatus of Patent Document 1 has a limitation in increasing the production speed because the arm rotation operation and vertical operation and pad adsorption and release are performed for each step of laminating the positive electrode, the negative electrode, and the separator. there were.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a stacked battery manufacturing apparatus capable of high-speed production of a battery material in which a positive electrode, a negative electrode, and a separator are stacked.

  The present invention is an apparatus for manufacturing a stacked battery in which sheet-like positive electrodes and negative electrodes are alternately laminated via separators, and the positive electrode, the negative electrode, and the separator are continuously formed through break lines that are easy to separate. Using a continuous positive electrode material, a continuous negative electrode material, and a continuous separator material as raw materials, each material is divided into a continuous separator material, a continuous positive electrode material, a continuous separator material, a continuous negative electrode material or a continuous separator material, a continuous negative electrode material, a continuous separator material, and a continuous positive electrode material. A polymerization means for forming and delivering a continuous battery material by superimposing the respective break lines in order, and a cutting means for cutting the continuous battery material into a predetermined number of break lines to form a plurality of battery materials; A holding means for holding the plurality of battery materials in an overlapping manner, a fixing means for sandwiching and fixing the stacked battery materials from above and below, and the fixing Characterized in that it comprises a breaking means for tearing off an end portion of the multiple battery materials to each break line grip.

  According to the present invention, a continuous positive electrode material, a continuous negative electrode material, and a continuous separator material can be used as raw materials and can be superposed at once by a polymerization means. Then, the fed continuous battery material is cut into a predetermined number of break lines, this is overlapped with the required number of layers, and the ends thereof are torn off. Thus, the positive electrode, the negative electrode and the separator are laminated one by one as in the past. Compared to the case, the number of processes is small, and the production speed can be increased.

The schematic diagram of the laminated battery manufacturing apparatus of this invention. Explanatory drawing of the shape of a raw material. The perspective view of a battery material.

  A specific configuration of the multilayer battery manufacturing apparatus of the present invention will be described with reference to the drawings. This apparatus uses a continuous positive electrode material P1, a continuous negative electrode material N1, and a continuous separator material S1 that are continuously formed through a perforated break line L that allows easy separation of the positive electrode P, the negative electrode N, and the separator S. Although both the positive electrode P and the negative electrode N are substantially rectangular, an electrode tab T having a part extending on one side is necessary, and the electrode is obtained by bending the break line L as shown in FIG. A tab T is formed. The separator S is a rectangle, and the breaking line L is a straight line.

  These continuous positive electrode material P1, continuous negative electrode material N1, and continuous separator material S1 are wound in a roll shape as shown in FIG. And each raw material is pulled out and it superimposes by the superposition | polymerization means 1, and continuous battery material B1 is formed. As shown in FIG. 2B, the continuous battery material B1 is arranged such that the positions of the break lines L coincide with each other in the order of the continuous separator material S1, the continuous positive electrode material P1, the continuous separator material S1, and the continuous negative electrode material N1. It is superimposed. However, the positive electrode P and the negative electrode N are overlapped with each other so that the positions of the electrode tabs T are reversed. In addition, the superposition | polymerization means 1 consists of two rotating rollers which oppose, and it sends out to the following process while forming the continuous battery material B1.

  Subsequently, the fed continuous battery material B1 is cut for each predetermined number of break lines L by the cutting means 2 to form a plurality of battery materials B2. In the present embodiment, the cutting is performed every seven broken lines L. The cutting means 2 cuts the continuous battery material B1 by sandwiching it from above and below. Here, as shown in FIG. 2 (b), the fracture lines L of the superimposed materials are not completely coincident with each other. The cutting means 2 can be cut off at the breaking line L by applying a tensile force in the longitudinal direction of the continuous battery material B1 by being sandwiched from above and below.

  Subsequently, the plurality of battery materials B2 are accommodated in the holding means 3. The holding means 3 is a box having a plane shape substantially the same as that of the plurality of battery materials B2 and opened on the upper side. If the plurality of battery materials B2 are continuously accommodated therein, the positions of the plurality of battery materials B2 are aligned. Can be superimposed on each other. In addition, about the accommodation to the holding means 3 of multiple battery material B2, what cut | disconnected the multiple battery material B2 to the holding means 3 may be dropped, and what is transferred to the holding means 3 by some conveyance means It may be.

  Subsequently, when the necessary number of stacked battery materials B2 are superposed, they are extruded from the side by the extruding means 6, and sandwiched from above and below by the fixing means 4 and fixed (FIG. 1 (b)). The extruding means 6 has a vertical wall surface and abuts against the end face of the stacked battery members B2 to push out by a predetermined distance, and the fixing means 4 comprises a general clamp. The fixing means 4 sandwiches the inner side of the outermost break line LE. And the edge part of the fixed several battery material B2 is hold | gripped with the fracture | rupture means 5, and each material is torn off by the fracture | rupture line L by pulling in the longitudinal direction of the multiple battery material B2, and the positive electrode P, the negative electrode N, and the separator S Is completed (FIG. 1 (c)). A perspective view of the battery material B is shown in FIG.

  Thereafter, the fixing by the fixing means 4 is released, the plurality of battery materials B2 are pushed out by one pushing line L by the pushing means 6, fixed again by the fixing means 4, and the ends of the plurality of battery materials B2 are gripped by the breaking means 5. And tear it off (FIG. 1 (d)). This process is repeated until the plurality of battery materials B2 run out. When the plurality of battery materials B2 run out, the continuous battery material B1 is cut again by the cutting means 2 and the plurality of battery materials B2 are accommodated in the holding means 3.

  For the completed battery material B, the electrode tabs T (P) of the positive electrode P and the electrode tabs T (N) of the negative electrode N are connected to each other, put in a case, and immersed in an electrolyte solution. can get.

  The multilayer battery manufacturing apparatus configured as described above can be superposed at once by a polymerization means comprising two rotating rollers facing each other using a continuous positive electrode material, a continuous negative electrode material and a continuous separator material as materials. And since the battery material can be obtained by cutting the fed continuous battery material for each predetermined number of break lines, overlapping this with the required number of layers, and tearing off the end, the positive electrode, as in the past, Compared to the case where the negative electrode and the separator are laminated one by one, the number of processes is small, and the production speed can be increased.

  The present invention is not limited to the above embodiment. For example, the holding means is not limited to a box, and any means can be used as long as a plurality of battery materials can be aligned and stacked on each other, such as a member that contacts only four corners of the plurality of battery materials. May be. In addition, when a plurality of holding means are provided and a plurality of battery materials stacked by one holding means are broken to form a battery material, a plurality of battery materials are accommodated in another holding means, so that the production speed can be further increased. Speed can be increased.

DESCRIPTION OF SYMBOLS 1 Polymerization means 2 Cutting means 3 Holding means 4 Fixing means 5 Breaking means P Positive electrode P1 Continuous positive electrode material N Negative electrode N1 Continuous negative electrode material S Separator S1 Continuous separator material L Break line B1 Continuous battery material B2 Multiple battery materials

Claims (1)

An apparatus for manufacturing a laminated battery in which sheet-like positive electrodes and negative electrodes are alternately laminated via separators,
As a raw material, a continuous positive electrode material, a continuous negative electrode material, and a continuous separator material continuously formed through a break line that is easy to separate the positive electrode, the negative electrode, and the separator,
Each material is continuously superposed in the order of continuous separator material, continuous positive electrode material, continuous separator material, continuous negative electrode material or continuous separator material, continuous negative electrode material, continuous separator material, and continuous positive electrode material, with their respective break lines aligned. Polymerization means for forming and delivering battery material;
Cutting means for cutting the continuous battery material for each predetermined number of break lines to form a plurality of battery materials;
Holding means for holding the plurality of battery materials by overlapping the required number of stacks;
Fixing means for sandwiching and fixing the plurality of stacked battery materials from above and below,
An apparatus for manufacturing a stacked battery, comprising: breaking means for gripping the ends of the plurality of fixed battery materials and tearing each broken line.

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