KR101739853B1 - Apparatus for impregnating electrolyte and fabricating method of secondary battery using thereof - Google Patents

Abstract

An electrolyte impregnating apparatus and a method for manufacturing a secondary battery using the same are disclosed. An electrolyte solution impregnating apparatus according to an embodiment of the present invention is an electrolyte solution impregnating apparatus for impregnating an electrolyte with an electrode laminate. The electrolyte solution impregnating apparatus includes an electrolyte solution containing section in which the electrode stack is immersed, and an electrolyte solution reservoir And an electrolyte injection unit for injecting an electrolyte into the electrolyte layer. The injection pressure of the electrolyte solution into the electrode assembly is changed by injecting the electrolyte solution.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electrolyte impregnating apparatus and a method for manufacturing the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery technology, and more particularly, to an electrolyte solution impregnation device and a method of manufacturing a secondary battery using the same.

2. Description of the Related Art As technology development and demand for mobile devices, electric vehicles, hybrid vehicles, power storage devices, and uninterruptible power supplies have increased, the demand for secondary batteries as energy sources has been rapidly increasing, and accordingly, Are being studied. Typically, there is a high demand for a lithium-ion secondary battery in which the demand for square-shaped or pouch-shaped secondary batteries is high in view of the shape of the battery, and the energy density and the discharge capacity per unit time in terms of materials are high.

Due to the high capacity of the rechargeable battery, the unit size of the electrode plates of the rechargeable battery is increasing, and the impregnation of the electrolyte is becoming more important. This is because, when the impregnation of the electrolyte solution is incomplete in the manufacturing process of the secondary battery, the capacity of the secondary battery is lowered and the non-uniformity of the electrode state is intensified, thereby lowering the reliability of the secondary battery. When the size of the electrode plate of the secondary battery is increased, the time required for impregnating the electrolyte increases, and the productivity of the secondary battery is lowered. In addition, although the impregnation failure of the electrolyte accelerates degradation of the electrode even though other electrode states are good, the life of the secondary battery is shortened.

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Korean Unexamined Patent Application Publication No. 10-2013-0075406 (Feb.

An embodiment of the present invention is to provide an electrolyte impregnating apparatus capable of enhancing the impregnation efficiency of an electrolytic solution and a method of manufacturing a secondary battery using the same.

An electrolyte solution impregnating apparatus according to an embodiment of the present invention is an electrolyte solution impregnating apparatus for impregnating an electrolyte with an electrode laminate, comprising: an electrolyte containing portion containing the electrolyte solution and immersed in the electrode laminate; And an electrolyte injecting portion provided in the electrolyte containing portion for injecting an electrolyte into the electrolyte containing portion. The injection pressure of the electrolyte into the electrode stacked body is changed by injecting the electrolyte.

The electrode stacked body may be arranged in a plurality of spaced apart from each other in the electrolyte containing portion, and the electrolyte injecting portion may be provided in the form of a wall between the electrode stacked bodies.

The electrolyte injection unit may include a first electrolyte injection wall provided on one side wall of the electrolyte containing part and spaced apart from the other side wall; And a second electrolyte injection wall which is provided on one side wall side of the other side wall of the electrolyte solution accommodating portion and is spaced apart from the one side wall.

The first electrolyte injection wall and the second electrolyte injection wall may be alternately provided.

The electrolyte injector may include at least one electrolyte injection hole for injecting an electrolyte toward the electrode stack in the electrolyte housing.

The electrolyte injection portion may be provided in parallel with the electrode stack, and the electrolyte injection hole may inject an electrolyte toward the side surface of the electrode stacked body facing the electrolyte injection portion.

The electrolyte solution impregnating apparatus may further include an electrolyte recovery unit for recovering the electrolyte injected into the electrolyte solution reservoir.

The electrolyte solution collecting part may supply the recovered electrolyte solution to the electrolyte solution injecting part.

The electrolyte solution impregnating device may further include an auxiliary containing portion provided outside the electrolyte containing portion and containing an electrolyte solution overflowed in the electrolyte containing portion.

An electrolyte solution impregnating apparatus according to another embodiment of the present invention is an electrolyte solution impregnating apparatus for impregnating an electrolyte solution with an electrode laminate, the electrolyte solution impregnating apparatus comprising: an electrolyte solution containing section for containing the electrolyte solution; And a driving unit for moving the electrode stack body in the electrolyte containing unit. The injection pressure of the electrolyte solution into the electrode stack body is changed by the movement of the electrode stack body.

The driving unit may move the electrode stack body in at least one of up-down movement, left-right movement, and vibration movement.

The electrolyte solution impregnation device comprising: a first activation line having one end fixedly connected to the first electrode tab of the electrode stack and the other end connected to the driver; And a second activation line having one end fixedly connected to the second electrode tab of the electrode stack and the other end connected to the driver.

The first activation line and the second activation line may be provided to support the electrode stack body.

According to another embodiment of the present invention, there is provided an electrolyte-impregnating apparatus for impregnating an electrolyte with an electrode laminate, wherein the electrolyte-impregnating apparatus includes an electrolyte containing unit in which the electrolyte solution flows and in which the electrode laminate is immersed, At least one of the flow velocity, the flow rate, and the flow direction of the electrolyte changes to change the injection pressure of the electrolyte solution into the electrode laminate.

The electrolyte solution reservoir may be an electrolytic solution reservoir which is elongated in one direction, and the electrolyte solution may flow in one direction or another direction along the longitudinal direction of the electrolytic solution solution.

The flow direction of the electrolytic solution can be changed periodically.

A method of manufacturing a secondary battery according to an embodiment of the present invention includes: providing an electrode stack; And impregnating the electrode laminate with the electrode laminate by immersing the electrode laminate in an electrolytic solution, wherein the step of impregnating the electrolyte with the electrode laminate includes a step of changing an injection pressure of the electrolyte into the electrode laminate do.

The step of changing the injection pressure to the electrode stack of the electrolyte may include injecting the electrolyte into the electrolyte containing part in which the electrolyte is contained.

In the step of injecting the electrolyte, the electrolyte may be injected toward the side surface of the electrode stacked body facing the electrolyte injection portion in the electrolyte injection portion provided in parallel with the electrode stacked body.

Collecting the electrolyte injected into the electrolyte containing portion after the injecting of the electrolyte; And injecting the recovered electrolyte into the interior of the electrolyte solution reservoir.

The step of changing the injection pressure of the electrolyte into the electrode laminate may include the step of moving the electrode laminate within the electrolyte containing portion in which the electrolyte is contained.

The step of moving the electrode stacked body may move the electrode stacked body in at least one of up-down movement, left-right movement, and vibration movement.

The step of changing the injection pressure of the electrolyte into the electrode laminate may change at least one of the flow rate, the flow rate, and the flow direction of the electrolyte solution in the electrolyte solution containing solution containing the electrolyte solution.

According to the embodiment of the present invention, it is possible to increase the impregnation efficiency of the electrolytic solution by changing the injection pressure into the electrode stacked body of the electrolytic solution in the electrolytic solution containing portion. Therefore, it is possible to increase the uniformity of the electrode state of the secondary battery, thereby increasing the reliability of the secondary battery, and enabling the secondary battery to have a long life.

1 is a plan view showing a state in which an electrode stack body according to an embodiment of the present invention is contained in an electrolyte solution tank
2 is a cross-sectional view of a state in which an electrode stack body according to an embodiment of the present invention is contained in an electrolyte solution tank
3 is a cross-sectional view of a state in which an electrode stack body according to an embodiment of the present invention is contained in an electrolytic solution water tank
4 is a view showing a state in which the electrode stack body according to the embodiment of the present invention is immersed in an electrolytic solution water channel
5 is a flowchart illustrating a method of manufacturing a secondary battery according to an embodiment of the present invention.

Hereinafter, embodiments of the electrolyte impregnating apparatus of the present invention and the method of manufacturing a secondary battery using the same will be described with reference to FIGS. 1 to 5. However, this is an exemplary embodiment only and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for efficiently describing the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

In the embodiment of the present invention, after the electrode laminate is provided, it includes immersing the electrode laminate in the electrolyte solution tank before sealing. Here, the electrode laminate includes a positive electrode plate, a negative electrode plate, and a separator provided between the positive electrode plate and the negative electrode plate. In the electrode laminate, at least one of the positive electrode plate, the negative electrode plate, and the separator is arranged. The positive electrode plate can be manufactured by, for example, applying a positive electrode active material such as lithium cobalt oxide to the positive electrode collector in the form of aluminum foil, drying and pressing. The negative electrode plate can be manufactured, for example, by applying a negative electrode active material such as a carbon-based active material to a negative electrode collector in the form of a copper foil, drying and pressing.

The electrode laminate may be in the form of a jelly-roll wound in a spiral shape with a roll-shaped separator interposed between the positive electrode plate and the negative electrode plate in the form of rolls, but the present invention is not limited thereto, and a stacking type in which a positive electrode plate, a separator, Lt; / RTI > The electrode stack may include a first electrode tab electrically connected to each of the positive electrode plates of the electrode stacked body and a second electrode tab electrically connected to each negative electrode plate of the electrode stacked body. The first electrode tab and the second electrode tab may protrude from one end of the body of the electrode stack body. However, the positions of the first electrode tab and the second electrode tab are not limited thereto.

FIG. 1 is a plan view showing a state in which an electrode stack according to an embodiment of the present invention is contained in an electrolyte solution tank, FIG. 2 is a cross-sectional view of a state in which an electrode stack according to an embodiment of the present invention is contained in an electrolyte solution tank, 3 is a sectional view of the electrode stack according to an embodiment of the present invention as viewed from the side of a state in which the electrode stack is contained in the electrolyte solution tank.

1 to 3, the electrolyte water tank 50 has a space S in which the electrolyte L can be received. The shape of the electrolytic solution water tank 50 is not limited to the hexahedron shape. The electrode stack body 70 can be locked in the electrolytic solution tank 50 as described above.

The electrode stacked body 70 includes a body 71, a first electrode tab 73 provided at the upper end of the body 71, and a first electrode tab 73 provided at the upper end of the body 71, And a two-electrode tab 75. All of the body 71 of the electrode stacked body 70 can be immersed in the electrolytic solution L in the electrolytic solution water tank 50. [ The first electrode tab 73 and the second electrode tab 75 can be immersed in the electrolyte L only at the lower end and exposed to the outside.

The electrode stacks 70 may be arranged in a line spaced apart from each other in the electrolyte solution tank 50. In the electrolyte solution tank 50, the electrode stacks 70 may be arranged in a plurality of rows. When the electrode stacked body 70 is immersed in the electrolyte solution tank 50, the electrolyte solution L in the electrolyte solution tank 50 is impregnated into the electrode assembly 70.

The first activation line 81 and the second activation line 85 may be connected to the first electrode tab 73 and the second electrode tab 75 of the electrode stack body 70, respectively. Specifically, a first activation terminal 83 may be provided at one end of the first activation line 81. A second activation terminal 87 may be provided at one end of the second activation line 85. The first activation terminal 83 is connected to the first electrode tab 73 and the second activation terminal 87 is connected to the second electrode tab 75. At this time, the first activation terminal 83 and the second activation terminal 87 may be connected to be fixed to the first electrode tab 73 and the second electrode tab 75, respectively. That is, the first activation terminal 83 and the second activation terminal 87 may be electrically connected while being physically fixed to the first electrode tab 73 and the second electrode tab 75, respectively.

Here, an activation process of applying an electric current to the electrode stack body 70 through the first activation line 81 and the second activation line 85 may be performed. The electrode stack body 70 can be activated while allowing the electrolyte solution L in the electrolyte solution tank 50 to be impregnated with the electrode stack body 70 in the embodiment of the present invention. At this time, the step of impregnating the electrode L into the electrode pre-formed body 70 and the step of activating the electrode stacked body 70 can be performed at the same time. However, the present invention is not limited thereto, and the impregnation process and the activation process may be performed sequentially.

The first activation line 81 and the second activation line 85 may be connected to a driver 89. In this case, when the first activation line 81 and the second activation line 85 are connected to the first electrode tab 73 and the second electrode tab 75, respectively, through the driving unit 89, Can be moved vertically and horizontally, or vibration can be applied to the electrode stack body 70. That is, in the embodiment of the present invention, the electrode stack 70 is not fixed in the electrolyte solution tank 50, but the driving unit 89 ) To perform up and down motion, left and right motion, and vibration motion.

The injection pressure into the electrode stacked body 70 of the electrolytic solution L can be changed by vertically moving the electrode stack body 70 in the up and down motion, . That is, when the electrode stack 70 is vertically moved, left-right moved, and vibrated in the electrolyte solution tank 50, the electrolyte L is liable to undergo fluidization in the electrolyte solution tank 50, The injection pressure of the electrolyte L into the electrode stack body 70 is increased and the impregnation efficiency of the electrolyte L can be improved. Here, the first activation line 81 and the second activation line 85 also serve to support the electrode stack body 70. Particularly, when the electrode stack 70 is moved up and down through the driving part 89 to dip into and out of the electrolyte solution tank 50, the impregnation efficiency of the electrolyte solution L is increased by a change in injection pressure due to gravity .

At least one electrolyte injection wall 52 may be formed in the electrolyte solution tank 50. The electrolyte injection wall 52 may be provided in parallel with the electrode stack body 70 in the electrolyte solution tank 50. The electrolyte injection wall 52 may be provided with an open end. In this case, the electrolytic solution L can be entirely shared in the electrolytic solution water tank 50.

The electrolyte injection wall 52 is provided on one side wall 50a of the electrolyte solution tank 50 toward the other side wall 50b and has a first electrolyte injection wall 52-1 spaced from the other side wall 50b by a predetermined distance, And a second electrolyte injection wall 52-2 provided on the side wall 50a side of the other side wall 50b of the water tank 50 and spaced apart from the one side wall 50a by a predetermined distance. The first electrolyte injection wall 52-1 and the second electrolyte injection wall 52-2 may be alternately provided in the electrolyte solution tank 50. [ The electrolyte injection wall 52 may be provided between the electrode stacks 70 arranged in a line.

The electrolyte injection wall 52 may be provided with a plurality of electrolyte injection openings 54 for injecting the electrolyte solution L into the electrolyte solution tank 50. The electrolyte solution injection port 54 may be provided on both sides of the electrolyte solution injection wall 52, but it is not limited thereto and may be provided only on one side of the electrolyte solution injection wall 52. A plurality of electrolyte injection openings 54 may be provided along at least one of the longitudinal direction and the height direction of the electrolyte injection wall 52 from the side of the electrolyte injection wall 52.

The electrolyte injection port 54 can inject the electrolyte L toward the electrode stack body 70. The electrolyte injection port 54 can be injected toward the side surfaces of the electrode stacked body 70 having a large surface area (i.e., the front surface and the rear surface). When the electrode stack 70 is provided between the electrolyte injection walls 52, the electrolyte L is injected into the electrode stack 70 from the electrolyte injection wall 52 located on both sides of the electrode stack 70 Therefore, the injection pressure of the electrolyte L into the electrode stack body 70 can be increased, and the impregnation efficiency of the electrolyte L can be increased. Here, the electrolyte injection port 54 can be formed so that the electrolyte L is uniformly dispersed and injected toward the surface of the electrode stack body 70.

That is, the electrolyte L may be injected from the electrolyte injection port 54 toward the electrode stack 70 by changing the injection pressure of the electrolyte L into the electrode stack 70. At this time, the injection pressure of the electrolyte L into the electrode stack body 70 can be controlled through the flow rate and the flow rate of the electrolyte L injected. The injection of the electrolyte L by the electrolyte injection port 54 can be continuously performed while the electrode stack 70 is contained in the electrolyte solution tank 50. However, the present invention is not limited thereto, and the injection of the electrolyte L by the electrolyte injection port 54 may be performed for a predetermined time period or periodically.

The electrolyte injection hole 54 is provided on the electrolyte injection wall 52 but the present invention is not limited thereto and the electrolyte injection hole 54 may be provided on the inner surface of the electrolyte solution tank 50. [

An auxiliary storage portion 56 capable of storing an electrolyte L overflowing may be provided at the outermost side of the electrolyte water tank 50. [ That is, in the embodiment of the present invention, when the electrolyte L is injected into the electrolyte solution tank 50 through the electrolyte injection port 54, the electrolyte solution L can overflow. At this time, the electrolytic solution L overflowing through the auxiliary storage portion 56 provided at the outermost side of the electrolytic solution water tank 50 can be received.

The auxiliary storage portion 56 may be provided with an electrolyte outlet 58. The electrolyte outlet (58) may be provided on the bottom surface of the auxiliary receiving portion (56). The electrolyte outlet 58 may be open. In this case, the electrolytic solution L contained in the auxiliary storage portion 56 is immediately discharged through the electrolyte outlet 58. However, the present invention is not limited thereto, and an electrolytic solution discharge port 58 may be provided with an on-off valve (not shown) capable of controlling opening and closing.

The electrolytic solution L discharged through the electrolyte discharge port 58 may be introduced into the electrolyte solution collection unit 60. A first electrolyte transfer line (62) may be provided between the electrolyte outlet (58) and the electrolyte recovery section (60). The electrolyte recovery section 60 can supply the electrolyte L recovered through the first electrolyte transfer line 62 to the electrolyte injection wall 52 again. The electrolyte L supplied to the electrolyte injection wall 52 is re-injected into the electrolyte solution tank 50 through the electrolyte injection port 54. A second electrolyte transfer line 64 may be provided between the electrolyte solution tank 50 and the electrolyte solution collection unit 60.

In the meantime, although the electrolyte discharge port 58 is provided in the auxiliary storage portion 56 in this embodiment, the electrolyte discharge port is not limited thereto and the electrolyte discharge port may be provided in the electrolyte solution tank 50. At this time, by making the amount of the electrolyte injected through the electrolyte injection port 54 equal to the amount of the electrolyte discharged through the electrolyte outlet, the level of the electrolyte L in the electrolyte solution tank 50 can be maintained.

The impregnation efficiency of the electrolytic solution L can be increased by changing the injection pressure into the electrode stacked body 70 of the electrolytic solution L in the electrolytic solution water tank 50 in the embodiment of the present invention. The method of changing the injection pressure may include a method of moving the electrode stack body 70 in the electrolyte solution tank 50 and a method of changing the flow rate (or flow rate) of the electrolyte solution L in the electrolyte solution tank 50 However, the present invention is not limited thereto, and various other methods can be used.

According to Darcy's law, the injection pressure is proportional to the penetration length of the electrolytic solution L, so that when the injection pressure is increased, the penetration length of the electrolytic solution L increases. As a result, the impregnation efficiency of the electrolytic solution (L) into the macropores and micropores in the electrode stacked body (70) becomes high. Here, the macro pores refer to pores formed between the separator in the electrode stack body 70 and the electrode plates (i.e., the positive electrode plate and the negative electrode plate), and the micropores refer to pores formed in the electrode plate between the active materials.

4 is a view showing a state in which the electrode stack body according to the embodiment of the present invention is immersed in an electrolytic solution water channel.

Referring to FIG. 4, the electrolytic solution channel 30 may be long in one direction. A space in which the electrolytic solution L is accommodated is provided in the electrolytic solution channel 30. The electrode stack body 70 is immersed in the electrolyte solution channel 30. [ A first activation line 81 including a first activation terminal 83 may be connected to the first electrode tab 73 of the electrode stack body 70. A second activation line 85 including a second activation terminal 87 may be connected to the second electrode tab 75 of the electrode stack 70.

The electrolytic solution L may flow in the electrolytic solution channel 30 in a predetermined direction. For example, the electrolytic solution L may be provided to flow in one direction along the longitudinal direction of the electrolytic solution water channel 30. At this time, at least one of the flow rate and the flow rate of the electrolytic solution L can be changed. Here, it is described that the electrolytic solution L flows in a predetermined direction. However, the present invention is not limited thereto, and the flow direction of the electrolytic solution L may be changed. At this time, the flow direction of the electrolytic solution L may be periodically changed. For example, when the electrolytic solution L flows in one direction along the longitudinal direction of the electrolytic solution channel 30 for a predetermined time, and then the electrolytic solution L flows in the other direction along the longitudinal direction of the electrolytic solution channel 30 for a predetermined time Can be repeated.

In the meantime, although it has been described that the electrolyte L flows in the electrolyte solution channel 30, the present invention is not limited thereto, and the electrolyte solution L may not flow and the electrode assembly 70 may move. For example, the electrode stack body 70 may move in one direction or another direction along the longitudinal direction of the electrolytic solution channel 30. [ At this time, the electrode stack body 70 may move through the driving unit 89, but the present invention is not limited thereto, and the electrode stack body 70 may be moved by a conveyance belt provided below the electrode stack body 70.

5 is a flowchart illustrating a method of manufacturing a secondary battery according to an embodiment of the present invention.

Referring to FIG. 5, an electrode stack 70 is provided (S 101). Since the manufacturing process of the electrode stacked body 70 is out of the scope of the present invention, a detailed description thereof will be omitted. The electrode stack body 70 may be prepared through various methods such as a known technology or a technology to be developed in the future.

Next, the electrode stacked body 70 is immersed in the electrolytic solution L to impregnate the electrolytic solution L with the electrode stacked body 70 (S103). At this time, the impregnation efficiency of the electrolyte L can be improved by changing the injection pressure of the electrolyte L into the electrode stack body 70. The method of changing the injection pressure includes a method of moving the electrode assembly 70 in the electrolyte solution tank 50 and a method of changing the flow rate (or flow rate) of the electrolyte solution L in the electrolyte solution tank 50 Can be.

Next, an activation process of applying an electric current to the electrode stack body 70 is performed (S 105). Here, the impregnating step of the electrolyte solution L into the electrode preform 70 and the activating step of the electrode laminate 70 can be performed at the same time. However, the present invention is not limited thereto, and the impregnation process and the activation process may be performed sequentially. At this time, the gas generated in the activation process is released into the atmosphere.

Next, the electrode stacked body 70 is taken out of the electrolyte solution L, and then the dry process is performed to remove the electrolyte solution deposited on the electrode stacked body 70 (S 107). Next, the electrode stack body 70 is sealed through a sealing process (S 109). At this time, the electrode stack body 70 can be vacuum-sealed through the incubation and packaging method.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

30: Electrolyte water channel
50: electrolytic water tank
52: electrolyte injection wall
52-1: first electrolyte injection wall
52-2: Second electrolyte injection wall
54: electrolyte injection hole
56:
58: Electrolyte discharge port
60: Electrolyte recovery unit
62: First electrolyte transfer line
64: Second electrolyte transfer line
70: electrode laminate
71: Body
73: first electrode tab
75: second electrode tab
81: first activation line
83: first activation terminal
85: second activation line
87: Second activation terminal
89:

Claims (23)

An electrolyte impregnating apparatus for impregnating an electrolyte with an electrode laminate,
An electrolyte containing portion containing the electrolytic solution and immersed in the electrode stacked body; And
And an electrolyte injecting portion provided in the electrolyte containing portion for injecting an electrolyte into the electrolyte containing portion,
The injection pressure of the electrolyte solution into the electrode laminate is changed by injecting the electrolyte solution,
The electrolyte injection unit
A first electrolyte injection wall provided on one side wall of the electrolyte containing part and on the other side wall side and spaced apart from the other side wall to open an end; And
And a second electrolyte injection wall which is provided on one side wall of the other side wall of the electrolyte containing portion and is spaced apart from the one side wall,
Wherein the first electrolyte injection wall and the second electrolyte injection wall are provided in parallel to the electrode stack body in the electrolyte housing.
The method according to claim 1,
Wherein the electrode stacks are arranged in a plurality of spaced apart from each other in the electrolyte containing portion,
Wherein the electrolyte injection portion is provided in a wall form between the electrode stacked bodies.
delete The method according to claim 1,
Wherein the first electrolyte injection wall and the second electrolyte injection wall are formed in a substantially rectangular shape,
Wherein the electrolytic solution is alternately provided.
The method according to claim 1,
The electrolyte injection unit
And at least one electrolyte injection port for injecting an electrolyte toward the electrode stacked body in the electrolyte containing portion.
The method of claim 5,
Wherein the electrolyte injection portion is provided in parallel with the electrode laminate,
And the electrolyte injection port injects an electrolyte toward the side surface of the electrode stacked body facing the electrolyte injection section.
The method according to claim 1,
The electrolytic solution impregnating device comprises:
And an electrolytic solution collecting part for collecting the electrolytic solution injected into the electrolytic solution containing part.
The method of claim 7,
The electrolytic solution collecting unit
And supplying the recovered electrolytic solution to the electrolytic solution injecting unit.
The method according to claim 1,
The electrolytic solution impregnating device comprises:
And an auxiliary accommodating portion provided outside the electrolyte accommodating portion and accommodating an electrolyte solution overflowed in the electrolyte accommodating portion.
delete delete delete delete An electrolyte impregnating apparatus for impregnating an electrolyte with an electrode laminate,
And an electrolyte containing portion in which the electrode laminate is immersed so that the electrolyte flows,
Wherein at least one of a flow rate, a flow rate, and a flow direction of the electrolyte solution changes in the electrolyte solution storage part to change an injection pressure of the electrolyte solution into the electrode assembly,
The electrolyte containing portion is an electrolytic solution channel provided in a long direction in one direction,
Wherein the electrolytic solution is provided so as to flow in one direction or another direction along the longitudinal direction of the electrolytic solution water, and the electrolytic solution is repeatedly flowing in the one direction and then flowing in the other direction.
delete delete Providing an electrode laminate; And
Impregnating the electrode stacked body with the electrolyte and impregnating the electrolyte with the electrode stacked body,
The step of impregnating the electrolyte with the electrode laminate includes a step of changing an injection pressure of the electrolyte into the electrode laminate,
Wherein the step of changing the injection pressure of the electrolyte solution into the electrode laminate comprises:
And injecting an electrolyte solution into the electrolyte containing portion in which the electrolyte solution is contained,
Wherein the step of injecting the electrolyte comprises:
A first electrolyte injection wall which is provided at one side wall of the electrolyte containing part and which is spaced apart from the other side wall and opens at an end thereof and a side wall which is spaced apart from the one side wall at another side wall of the electrolyte containing part, And the electrolyte is injected from the second electrolyte injection wall to be opened.
delete 18. The method of claim 17,
Wherein the step of injecting the electrolyte comprises:
Wherein the electrolyte solution is injected toward the side surface of the electrode stacked body facing the electrolyte injection portion in the electrolyte injection portion provided in parallel with the electrode stacked body.
18. The method of claim 17,
After the step of injecting the electrolytic solution,
Collecting the electrolyte injected into the electrolyte solution storage part; And
Further comprising the step of re-injecting the recovered electrolyte into the interior of the electrolyte containing portion.
delete delete Providing an electrode laminate; And
Impregnating the electrode stacked body with the electrolyte and impregnating the electrolyte with the electrode stacked body,
The step of impregnating the electrolyte with the electrode laminate includes a step of changing an injection pressure of the electrolyte into the electrode laminate,
The step of changing the injection pressure of the electrolytic solution into the electrode laminate includes:
Wherein at least one of a flow rate, a flow rate, and a flow direction of the electrolytic solution is changed in an electrolytic solution containing portion in which the electrolytic solution is contained,
The electrolyte solution is provided to flow in one direction or another direction in the electrolyte solution accommodating portion. Wherein the electrolyte is repeatedly flowing in the one direction and then flowing in the other direction.

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