KR-20260062218-A - Battery Manufacturing Apparatus

KR20260062218AKR 20260062218 AKR20260062218 AKR 20260062218AKR-20260062218-A

Abstract

The present disclosure relates to a battery manufacturing apparatus for sealing a sealing area in a battery cell comprising a case forming a receiving space for receiving an electrode assembly and a sealing area formed on a flange portion formed along the perimeter of the receiving space, wherein the apparatus comprises: a first sealing bar and a second sealing bar arranged to face each other with the sealing area in between and extending along a predetermined extension direction parallel to one side of the receiving space so as to contact the sealing area; a first sealing surface on one side of the first sealing bar facing the sealing area; a second sealing surface on one side of the second sealing bar facing the sealing area and the first sealing surface; a film-shaped first heating member disposed on the first sealing surface; and a film-shaped second heating member disposed on the second sealing surface.

Inventors

배재성

Assignees

에스케이온 주식회사

Dates

Publication Date: 20260507
Application Date: 20241028

Claims (16)

A battery manufacturing apparatus for manufacturing a battery cell comprising: a case forming a receiving space for accommodating an electrode assembly; a flange portion formed along the perimeter of the receiving space in the case; and a sealing area sealing at least a portion of the flange portion. A first sealing bar and a second sealing bar are arranged to face each other with the sealing area in between and extend along a predetermined extension direction parallel to one side of the receiving space so as to contact the sealing area; A first sealing surface facing the sealing area among the surfaces of the first sealing bar; A second sealing surface facing the sealing area and the first sealing surface among the surfaces of the second sealing bar; A first heating element in the form of a film disposed on the first sealing surface; and A battery manufacturing apparatus comprising: a second heating element in the form of a film disposed on the second sealing surface.
In paragraph 1, The above first heating part A first heater disposed in a preset first area on the first sealing surface; and A battery manufacturing device comprising: a second heater and a third heater respectively disposed in a second region and a third region formed on the first sealing surface with the first region in between.
In paragraph 2, The first heater, the second heater, and the third heater are each A battery manufacturing device extending along the above extension direction.
In paragraph 2, The first heater, the second heater, and the third heater are each A battery manufacturing device equipped with multiple units.
In paragraph 2, The above first heater, the above second heater, and the above third heater are a battery manufacturing device capable of heating to different temperatures.
In paragraph 1, The above first heating part A first heater disposed in a preset first area on the first sealing surface; and A battery manufacturing device comprising: a second heater disposed in a second region located closer to the receiving space than the first region on the first sealing surface.
In paragraph 1, The above first heating part A first heater disposed in a preset first area on the first sealing surface; and A battery manufacturing device comprising: a second heater disposed in a second region located further from the receiving space than the first region on the first sealing surface.
In either of paragraphs 6 and 7, The first heater and the second heater are each A battery manufacturing device extending along the above extension direction.
In either of paragraphs 6 and 7, The first heater and the second heater are each A battery manufacturing device equipped with multiple units.
In either of paragraphs 6 and 7, The above first heater and the above second heater are a battery manufacturing device capable of heating to different temperatures.
In paragraph 1, The above first heating part A first heater disposed in a preset first area on the first sealing surface; and A battery manufacturing device comprising: a second heater disposed in a second region located along the perimeter of the first region on the first sealing surface.
In paragraph 1, A first temperature sensor disposed on the first sealing bar to detect the temperature of the first heating part; and A battery manufacturing device further comprising: a second temperature sensor disposed on the second sealing bar to detect the temperature of the second heating part.
In Paragraph 12, The first temperature sensor and the second temperature sensor are A battery manufacturing device that is a thermocouple.
In Paragraph 12, The above first temperature sensor is It is inserted into the first sealing bar, spaced apart from the first sealing surface by a predetermined distance, and The above second temperature sensor is A battery manufacturing device inserted into the second sealing bar, spaced apart from the second sealing surface by the distance.
A battery manufacturing apparatus for manufacturing a battery cell comprising: a case forming a receiving space for accommodating an electrode assembly; a flange portion formed along the perimeter of the receiving space in the case; and a sealing area sealing at least a portion of the flange portion. A first sealing bar and a second sealing bar arranged to face each other with the sealing area in between and in contact with the sealing area; A first sealing surface facing the sealing area among the surfaces of the first sealing bar; A second sealing surface facing the sealing area and the first sealing surface among the surfaces of the second sealing bar; and A battery manufacturing apparatus comprising: a film-shaped heating element disposed on at least one of the first sealing surface or the second sealing surface.
A battery manufacturing apparatus for manufacturing a battery cell comprising a case forming a receiving space for accommodating an electrode assembly, and a flange portion formed along the perimeter of the receiving space in the case, It includes a first bending body and a second bending body that contact the flange portion with the flange portion in between, in order to bend at least a portion of the flange portion, and The first bending body and the second bending body are each A block body movable toward the above flange portion; A unit body positioned in a direction further away from the receiving space than the block body and movable toward the flange portion; A film-shaped first heating member disposed on a block contact surface that contacts the flange portion among one surface of the block body; and A battery manufacturing device comprising: a film-shaped second heating part disposed on a unit contact surface that contacts the flange portion among the surfaces of the unit body.

Description

Battery Manufacturing Apparatus The present disclosure relates to a battery manufacturing apparatus. More specifically, it relates to a battery manufacturing apparatus capable of improving the quality of a battery cell. A conventional battery manufacturing device is a method in which a sealing bar including a heater and a temperature sensor is spaced apart from the sealing area of the battery cell's outer material by a preset distance, thereby sealing the outer material by heating said sealing area. However, since the sealing bar is positioned apart from the sealing area, precise temperature control through the heater and the temperature sensor may be difficult. In addition, sealing defects may occur due to localized uneven heating, which may not only cause slippage in some layers of the outer material formed of multiple layers but also cause insulation breakdown of the battery cell due to spot welding of the outer material. FIG. 1 is an example of a battery cell according to the present disclosure. FIG. 2 illustrates one step of the manufacturing process of a battery cell according to the present disclosure. FIGS. 3a to 3e illustrate steps following the first step shown in FIG. 2. FIG. 4 illustrates an example of a battery manufacturing apparatus according to the present disclosure. FIGS. 5a to 5d illustrate various embodiments of the heating unit. FIG. 6 illustrates a control block diagram of a battery manufacturing apparatus according to the present disclosure. FIG. 7 illustrates another example of a battery manufacturing apparatus according to the present disclosure. Preferred embodiments of the present disclosure are described in detail below with reference to the attached drawings. The configuration of the device or the control method described below are intended only to explain the embodiments of the present disclosure and are not intended to limit the scope of the rights of the present disclosure, and reference numerals used identically throughout the specification indicate identical components. Specific terms used in this specification are for convenience of explanation only and are not intended to limit the exemplified embodiments. In this specification, battery, secondary battery, and cell all refer to a battery cell capable of charging and discharging. FIG. 1 is an example of a battery cell (100) according to the present disclosure. A battery cell (100) according to the present disclosure includes a case (130) that accommodates an electrode assembly (10, see FIG. 2) inside, and lead tab portions (111, 112) that are electrically connected to the electrode assembly (10) and protrude outside the case (130). The above case (130) may be formed of a flexible material and may contain the electrode assembly (10) and an electrolyte (EL, see FIG. 3a) in which the electrode assembly is immersed. Meanwhile, the case (130) may be sealed at all open portions to prevent the electrolyte from leaking out. Meanwhile, in order to activate the battery cell (100), the manufacturing process of the battery cell requires charging and discharging the battery cell (100) being manufactured. However, during the charging and discharging process (or initial charging and discharging process) of the battery cell (100) being manufactured, gas may inevitably be generated in the electrolyte. Since failure to remove the gas generated inside the case (130) can cause defects in the battery cell, the process of removing the gas is considered an essential process in the manufacturing process of the battery cell. That is, the manufacturing process of the battery cell can perform a degassing process to remove the gas. Meanwhile, in order to efficiently remove the gas during the degassing process, a space for capturing the gas inside the battery cell (100) will be required. FIG. 2 illustrates one step of the manufacturing process of a battery cell (100) according to the present disclosure. Specifically, FIG. 2 illustrates a step of a manufacturing process for manufacturing a battery cell (100) in which gas generated inside the battery cell (100) is collected and then degassed. Referring to FIG. 2, the electrode assembly (10) can be placed inside the case (130). The electrode assembly (10) above may be formed by sequentially stacking an anode, a protective film, and a cathode. The anode and the cathode can be separated by the protective film to prevent them from coming into contact with each other. The battery cell (100) may include lead tab portions (111, 112) that are connected to the electrode assembly (10) and protrude outward. The electrode assembly (10) may be inserted into the case (130) after being connected to the lead tab portions (111, 112). Accordingly, when the electrode assembly (10) is placed inside the case (130), at least a portion of the lead tab portions (111, 112) will be positioned to protrude outward from the case (130). The lead tab portions (111, 112) can be formed by grouping leads (15, 16) protruding from the pos