JP5189758B2 - Bipolar battery manufacturing apparatus and manufacturing method - Google Patents

Description

  The present invention relates to a bipolar battery manufacturing apparatus and manufacturing method.

  In recent years, reduction of carbon dioxide emissions has been strongly desired for environmental protection. In the automobile industry, there is an expectation for the reduction of carbon dioxide emissions by introducing electric vehicles and hybrid electric vehicles, and bipolar batteries are attracting attention as a power source for driving a motor that holds the key to practical use.

A bipolar battery is composed of a laminate in which bipolar electrodes made of a current collector in which a positive electrode and a negative electrode are arranged are sequentially arranged via a separator (electrolyte layer) (see, for example, Patent Document 1). The bipolar electrode and the separator are stored in advance without being in contact with each other with an interval in the stacking direction, thereby facilitating the formation of the stack.
JP 9-23003 A

  However, since bipolar electrodes tend to become thinner and larger in size with higher output and higher capacity, and handling is not easy, work efficiency is especially important when manufacturing bipolar batteries with stacked bipolar electrodes. It is difficult to improve. In addition, since the mechanism for holding the bipolar electrode is complicated, there is a problem that the size of the stacking apparatus is increased.

  The present invention has been made in order to solve the above-described problems associated with the prior art, and provides a bipolar battery manufacturing method with good working efficiency and a bipolar battery manufacturing apparatus that can be easily made compact. For the purpose.

In order to achieve the above object, the invention described in claim 1
Bipolar electrodes having a current collector, a positive electrode disposed on one surface of the current collector, and a negative electrode disposed on the other surface of the current collector, and separators are alternately disposed on a cradle, An apparatus for manufacturing a bipolar battery for forming a laminated body, comprising: an electrode setting means for arranging and storing a plurality of the bipolar electrodes and the separator in a state in which they are not in contact with each other at intervals in the stacking direction. Have
The electrode setting means includes
A clamping mechanism for gripping the outer periphery of the bipolar electrode and the separator , and
A support structure on which the clamping mechanism is disposed;
The clamp mechanism moves in a direction perpendicular to the stacking direction with respect to the support structure to a gripping position that overlaps a projection surface of the bipolar electrode when performing the gripping, and the bipolar type when canceling the gripping. The bipolar battery manufacturing apparatus is supported by the support structure so as to be movable in a direction perpendicular to the stacking direction with respect to the support structure to a retracted position that does not overlap with the projection surface of the electrode.

The invention described in claim 13 for achieving the above object is as follows.
Current collector, positive electrode disposed on one surface of the current collector, and bipolar electrode having a negative electrode disposed on the other surface of the current collector, separators are alternately stacked on a cradle, A method of manufacturing a bipolar battery for forming a laminate,
A plurality of bipolar electrodes and the outer peripheral portion of the separator can be moved in a direction perpendicular to the stacking direction with respect to the support structure to a holding position where the projection structure of the bipolar electrode overlaps the support structure of the electrode setting means An electrode setting process for storing in a state in which the clamp mechanism is sequentially held by the arranged clamp mechanism and is not in contact with each other with an interval in the stacking direction;
The electrode setting means is disposed on a receiving base to eliminate the gripping, and the clamp mechanism is moved to a retracted position that does not overlap with the projection surface of the bipolar electrode in a direction perpendicular to the stacking direction with respect to the support structure. A bipolar battery manufacturing method comprising: a stacking step of forming a stacked body on a cradle by moving and sequentially removing gripping.

  According to the first aspect of the present invention, when the holding of the bipolar electrode and the separator is canceled, the clamp mechanism moves to a retracted position that does not overlap the projection surface of the bipolar electrode. Accordingly, since interference with adjacent bipolar electrodes and separators and other clamping mechanisms in use can be avoided, the support structure on which the clamping mechanism is arranged can be downsized. That is, it is possible to provide a bipolar battery manufacturing method that can be easily downsized.

  According to the fifteenth aspect of the present invention, when the holding of the bipolar electrode and the separator is canceled, the clamp mechanism can be moved to a retracted position that does not overlap the projection surface of the bipolar electrode. Therefore, since interference with adjacent bipolar electrodes and separators and other clamping mechanisms in use can be avoided, handling is easy and work efficiency can be improved. That is, it is possible to provide a bipolar battery manufacturing apparatus with good working efficiency.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show a bipolar battery according to an embodiment of the present invention, FIG. 1 is a diagram for explaining the bipolar battery according to the embodiment, and FIG. 2 is shown in FIG. FIG. 3 is a perspective view for explaining an assembled battery using the bipolar battery shown in FIG. 1, and FIG. 4 is a vehicle on which the assembled battery shown in FIG. 3 is mounted. FIG.

  As shown in FIG. 1, the bipolar battery 10 is a substantially rectangular battery, and includes an outer case 104 and terminal plates 101 and 102.

  As shown in FIG. 2, the bipolar battery 10 according to this embodiment includes a bipolar single battery having a negative electrode 112, a positive electrode 113, a current collector 111, a separator (electrolyte layer) 120, a first seal 115 and a second seal 117. A battery 110 is provided. The current collector 111 is disposed between the positive electrode 113 and the negative electrode 112. The electrolyte layer is formed by soaking the electrolytic solution into the negative electrode surface. The first seal 115 is disposed so as to surround the periphery of the positive electrode 113. The separator 120 is disposed so as to cover the positive electrode 113 and the first seal 115. The second seal 117 is disposed on the separator 120 in alignment with the first seal 115.

  By stacking a plurality of bipolar unit cells 110, a stack 100 in which the cells are connected in series is formed, and an exterior case 104 for preventing external impact and environmental degradation in the state of the stack 100. Is housed. Terminal plates 101 and 102 are arranged on the outermost layer (the uppermost layer and the lowermost layer) of the laminate 100.

  The terminal plates 101 and 102 are made of a highly conductive member, and are configured to cover at least all of the outermost electrode projection surfaces of the multilayer body 100. Therefore, the resistance of the current extraction portion in the outermost layer is lowered, and the output of the battery can be increased by reducing the resistance in the current extraction in the surface direction. The highly conductive member is, for example, stainless steel.

The terminal plates 101 and 102 are extended to the outside of the outer case 104 and also serve as electrode tabs for drawing current from the laminate 100. The outer case 104 is made of aluminum from the viewpoint of weight reduction and thermal conductivity. It consists of a sheet material such as a polymer-metal composite laminate film in which metals (including alloys) such as stainless steel, nickel, and copper are coated with an insulator such as a polypropylene film. It is formed by joining by wearing.

  The bipolar battery 10 can be used alone, but can be used, for example, in the form of an assembled battery 130 as shown in FIG. The assembled battery 130 includes a plurality of bipolar batteries 10 connected in series and / or in parallel, and has conductive bars 132 and 134 as external output terminals. The conductive bars 132 and 134 are connected to terminal plates 101 and 102 extending from the bipolar battery 10, respectively.

  When the bipolar battery 10 is connected and configured, the capacity and voltage can be freely adjusted by appropriately connecting in series or in parallel. The connection method uses a conductive bus bar or the like to connect the terminal plate 101 and the terminal plate 102 or the terminal plates 101 and 102 to each other, for example, ultrasonic welding.

  The assembled battery 130 itself may be provided in the form of an assembled battery module (large-sized assembled battery) by serializing and / or parallelizing and connecting a plurality of the batteries.

  As shown in FIG. 4, the assembled battery module 136 can secure a large output, and can be mounted as a power source for driving the motor of the vehicle 138, for example. The vehicle is, for example, an electric vehicle, a hybrid electric vehicle, or a train.

  The assembled battery module 136 can perform very fine control such as charging control for each built-in bipolar battery 10 or each assembled battery 130, so that the travel distance per charge can be extended, It is possible to improve performance such as prolonging the service life.

  FIG. 5 is a process diagram for explaining the bipolar battery manufacturing apparatus and method according to the present embodiment.

  The bipolar battery manufacturing method according to the present embodiment includes an electrode forming step, a seal precursor arranging step, an electrode setting step (including an electrolyte layer forming step), a vacuum introducing step, an electrode stacking step, a pressing step, and a vacuum releasing step. And a pressurizing and holding step and a casing step.

  As will be described later, in the electrode setting process, the bipolar battery is gripped by a clamp mechanism arranged in the support structure in the electrode setting process, and when the grip is released in the electrode stacking process, It is moved to a retracted position that does not overlap the projection surface of the bipolar electrode.

  Therefore, since interference with adjacent bipolar electrodes and separators and other clamping mechanisms in use can be avoided, handling is easy and work efficiency can be improved.

  6 is a front view for explaining the positive electrode according to the electrode forming step shown in FIG. 5, FIG. 7 is a rear view for explaining the negative electrode according to the electrode forming step shown in FIG. 5, and FIG. It is sectional drawing regarding line VIII-VIII of FIG.

  In the electrode forming step, first, the positive electrode slurry is adjusted. The positive electrode slurry has a positive electrode active material [85% by weight], a conductive additive [5% by weight], and a binder [10% by weight], and is adjusted to a predetermined viscosity by adding a viscosity adjusting solvent.

The positive electrode active material is LiMn ₂ O ₄ . The conductive auxiliary agent is acetylene black. The binder is PVDF (polyvinylidene fluoride). The viscosity adjusting solvent is NMP (N-methyl-2-pyrrolidone).

  The positive electrode slurry is applied to one surface of a current collector 111 made of stainless steel foil (thickness 20 μm). The coating film of the positive electrode slurry is dried using, for example, a vacuum oven to form the positive electrode 113 made of a positive electrode active material layer having a thickness of 30 μm. At this time, NMP is removed by volatilization.

  Next, the negative electrode slurry is adjusted. The negative electrode slurry has a negative electrode active material [90% by weight] and a binder [10% by weight], and has a predetermined viscosity by adding a viscosity adjusting solvent. The negative electrode active material is hard carbon. The binder and viscosity adjusting solvent are PVDF and NMP.

  The negative electrode slurry is applied to the other surface of the current collector 111. The coating film of the negative electrode slurry is dried using, for example, a vacuum oven to form the negative electrode 112 made of a negative electrode active material layer having a thickness of 30 μm. At this time, NMP is removed by volatilization.

  As a result, a bipolar electrode (bipolar unit cell 110 without an electrolyte layer) in which the positive electrode 113 and the negative electrode 112 are formed on one surface and the other surface of the current collector 111 is obtained.

  The bipolar battery electrodes (111, 112, 113) are cut to a size of 330 × 250 (mm). The outer peripheral portions of the positive electrode 113 and the negative electrode 112 are peeled off with a width of 20 mm in order to expose the current collector 111. Thereby, an electrode non-arranged part is formed, and the area (and length) of the current collector 111 is larger than the areas (and length) of the positive electrode 113 and the negative electrode 112. The presence of the electrode non-arranged portion facilitates the arrangement of the first seal precursor 114 and the second seal precursor 116, which will be described later, and the gripping by the clamp mechanism 190.

  9 is a front view for explaining the first seal precursor in the seal precursor arrangement step shown in FIG. 5, FIG. 10 is a sectional view taken along line XX in FIG. 9, and FIG. The front view for demonstrating the 2nd seal precursor of the seal precursor arrangement | positioning process shown, FIG. 12 is sectional drawing regarding the line XII-XII of FIG.

  In the seal precursor arrangement step, first, a first seal precursor (one-component uncured epoxy resin) 114 is arranged on the outer periphery of the positive electrode side where the current collector 111 is exposed. At this time, a non-arranged portion is provided with a width of about 10 mm from the outer peripheral end face. For example, application using a dispenser is applied to the arrangement of the first seal precursor 114.

  Next, the separator 120 is arrange | positioned so that all the positive electrode side surfaces of the electrical power collector 111 may be covered. The separator 120 is made of porous polyethylene, and its thickness and size are 12 μm and 335 × 255 (mm). That is, the area (and length) of the separator 120 is larger than the area of the current collector 111. Therefore, in the case of being laminated, it is possible to suppress contact between the outer peripheral portions of the adjacent current collectors 111, and it is possible to improve insulation.

  Thereafter, a second seal precursor (one-component uncured epoxy resin) 116 is disposed on the separator 120. At this time, the second seal precursor 116 is positioned so as to face (overlap) the arrangement site of the first seal precursor 114. For example, application using a dispenser is applied to the arrangement of the second seal precursor 116.

  FIG. 13 is a schematic diagram for explaining the input device and the electrode stocker according to the electrode setting step shown in FIG. 5, and FIG. 14 is a schematic diagram for explaining the arrangement position of the clamp mechanism shown in FIG. 15 is a schematic view for explaining the clamping mechanism shown in FIG.

  As shown in FIG. 13, the charging device 140 is used to transfer the bipolar unit cell 110 held by the holding means 146 to 149 to the electrode stocker (electrode setting means and stacking means) 150.

  The holding means 146 and the holding means 147 have a frame-shaped pressing portion corresponding to one of the outer peripheral portions of the bipolar unit cell 110, and are disposed so as to be close to and away from each other. The holding means 148 and the holding means 149 have a frame-like pressing portion corresponding to the other outer peripheral portion of the bipolar unit cell 110 and are disposed so as to be close to and away from each other. Further, the holding means 146 and 147 and the holding means 148 and 149 are arranged so as to be close to and away from each other.

  Therefore, the outer periphery of the bipolar unit cell 110 is held by the holding means 146, 147 and the holding means 148, 149, and the holding means 146, 147 and the holding means 148, 149 are separated so that no wrinkles or the like occur. In addition, the bipolar unit cell 110 can be held in a tensioned state. Further, the pressing portions of the holding means 146 to 149 have a frame shape and are located on the outer peripheral portion of the bipolar unit cell 110, so that contact with the formed electrode and the arranged second seal precursor 116 is avoided. It is done.

  The charging device 140 has a suction cup 142 connected to a reduced pressure source and an arm portion 144 for supporting the suction cup 142. The suction cups 142 are made of rubber, for example, and are installed so as to be close to and away from each other. Therefore, it is possible to hold the suction cup 142 in a state where tension is applied to the bipolar unit cell 110 by positioning the suction cup 142 on the outer peripheral portion of the bipolar unit cell 110 and separating the suction cup 142 in the attracted state.

  The means for holding the bipolar unit cell 110 is preferably a suction cup in terms of compactness and low load on the bipolar unit cell 110, but is not particularly limited to this form.

  The electrode stocker 150 receives the bipolar unit cell 110 transferred by the loading device 140, and is used for storing the bipolar unit cell 110 in a state in which they are not in contact with each other at intervals in the stacking direction, and has a holding mechanism and a support structure 154. Note that the stacking direction when electrodes are stacked on the cradle 156 described later is a direction (Z-axis direction) perpendicular to the surface direction (XY-axis direction) of the bipolar unit cell 110.

  The holding mechanism has six sets of clamp mechanisms 190 that are capable of gripping four locations on the outer peripheral portion of the bipolar unit cell 110, and six bipolar unit cells 110 can be set.

  In addition, a drive rod 198 for operating the clamp mechanism 190 is disposed in the vicinity of the clamp mechanism 190.

  As shown in FIG. 14, the parts of the bipolar unit cell 110 held by the clamp mechanism 190 are located on the two opposite sides, located in a region having a width of about 10 mm from the outer peripheral end face, and the first seal precursor 114 and the second seal precursor 116 are not disposed. The part of the outer periphery of the bipolar unit cell 110 held by the clamp mechanism 190 is not limited to four parts, and can be appropriately increased or decreased in consideration of the size of the bipolar unit cell 110 and the like. Here, the clamp mechanism 190 indicated by the dotted line in the figure is the clamp mechanism in the retracted position, and the solid line in the figure corresponds to the gripping position. Moreover, the arrangement | positioning space | interval regarding the lamination direction of the clamp mechanism 190 is set with the space | interval so that it may become larger than the deflection amount of the bipolar type single battery 110, as shown in FIG.

  FIG. 15a shows a detailed view of the clamp mechanism 190 as viewed from the stacking direction. As shown in FIG. 15a, the clamp mechanism 190 is supported by a support structure 154 through a support rod 195a so that the guide block 195 can move in the left-right direction in the figure, and between the guide block 195 and the support structure 154. An elastic force is given in the left-right direction in the figure by a spring 195b arranged in the figure. Although the gripping operation will be described later, the clamp mechanism 190 returns to the retracted position that does not overlap the projection surface of the bipolar electrode 110 when the gripping is canceled by the elastic force.

  FIG. 15 b shows a cross-sectional view of the clamp mechanism 190. The clamp mechanism 190 has lower and upper arms 191, 193, a guide block 195, a movable block 197, and a drive rod 198.

  The lower arm 191 has a distal end portion on which the bipolar unit cell 110 is placed and a base portion extending from the distal end portion via a lower step portion 192. The upper arm 193 includes a distal end portion that sandwiches the bipolar unit cell 110 with the distal end portion of the lower arm 191, an intermediate portion that extends from the distal end via a first upward inclined portion, and a second upward inclined portion that extends from the intermediate portion 194 having a base extending through 194. The lower and upper arms 191 and 193 are elastically biased so as to be close to each other by, for example, an elastic member (not shown) made of a spring.

  Note that the tip of the upper arm 193 has a protrusion 199 that faces the lower arm 191. The lower arm 191 has a through hole that is aligned with the protrusion 199. The size of the protrusion 199 is set so that the tip of the protrusion 199 is exposed from the through hole of the lower arm 191 when the bipolar unit cell 110 is gripped by the lower and upper arms 191 and 193. .

  The guide block 195 is fixed to the base of the lower arm 191 and has a through hole 196. The movable block 197 is disposed between the guide block 195 and the lower step 192 of the lower arm 191, and is elastically biased toward the guide block 195 by the spring 195b described above.

  The drive rod 198 is disposed so as to freely reciprocate, and the diameter of the drive rod 198 is set so as to pass through the through hole 196 of the guide block 195. Accordingly, the tip of the drive rod 198 protruding from the through hole 196 presses the movable block 197 and moves it toward the lower step 192 of the lower arm 191.

  Since the movable block 197 is in contact with the second upper inclined portion 194 of the upper arm 193, the movement of the movable block 197 causes the upper arm 193 to rise.

Accordingly, when the drive rod 198 is protruded, the tip portions of the lower and upper arms 191 and 192 are separated from each other, so that the bipolar unit cell 110 can be disposed or released (released). It is. (State in the lower figure of FIG. 15b)
Further, when the drive rod 198 is projected, the movable block 197 contacts the lower step 192 of the lower arm 191 and moves the guide block 195 fixed to the base of the lower arm 191. As a result, the entire clamping mechanism 190 moves.
On the other hand, when the drive rod 198 is retracted, the tip portions of the lower and upper arms 191 and 192 are close to each other, so that the bipolar unit cell 110 can be gripped.

  In other words, the clamp mechanism 190 includes an interlocking means for the gripping operation of the bipolar unit cell 110 and the movement operation from the retracted position to the gripping position, and an interlocking means for the gripping release operation and the moving operation to the retracted position. Have. The clamp mechanism 190 is not particularly limited to the above configuration as long as the bipolar unit cell 110 can be gripped. Since the clamp mechanism 190 in this embodiment can avoid interference with the adjacent bipolar unit cell 110 and other clamp mechanisms 190 in use, it is possible to reduce the size of the support structure 154 on which the clamp mechanism 190 is disposed. It is.

  Returning to FIG. 13, the support structure 154 has a frame shape in which at least the upper side is opened to avoid interference when the bipolar unit cell 110 is set, and the lower side is also opened so that a cradle 156 (described later) can be inserted from below. It is. Furthermore, an opening is also provided on a surface that does not include the clamp mechanism 190 (in the direction perpendicular to the paper surface) so that a later-described cradle 156 can be conveyed.

  The support structure 154 is provided with Z-axis moving means 155 (not shown) for moving the support structure 154 downward. The Z-axis moving unit 155 moves the support structure 154 relative to the drive rod 198 so that the drive rod 198 is opposed to the clamp mechanism 190 adjacent in the vertical direction.

  In this embodiment, a plurality of bipolar unit cells 110 are sequentially set on the electrode stocker 150 by moving the support structure 154. However, the drive rod 198 is moved without moving the support structure 154. Alternatively, a plurality of drive rods 198 may be prepared so that neither of them moves.

  FIG. 16 is a cross-sectional view for explaining an electrode setting step.

  In the electrode setting process, the bipolar unit cell 110 transferred by the input unit 140 is input to the electrode stocker 150 in the order of the bipolar unit cell 110F, E, D, C, B, A, and the negative electrode surface is turned up. In this state, it is received by the electrode stocker 150, and finally, the bipolar unit cells 110 (110A to 110F) are stored in the electrode stocker 150 in a state where they are not in contact with each other at intervals in the stacking direction.

  The configurations of the bipolar unit cells 110A and 110F held at the uppermost and lowermost positions are appropriately set in consideration of productivity and subsequent processes. In the present embodiment, the bipolar unit cell 110A held at the top does not have the negative electrode 112, and the bipolar unit cell 110F held at the bottom has only the negative electrode 112 and the current collector 111. However, the positive electrode 113, the first seal precursor 114, the second seal precursor 116, and the separator 120 are not arranged.

  Next, the electrode set preparation process which is a part in the electrode setting process will be described in detail. 17 to 18 are cross-sectional views for explaining the placement and inversion before the loading operation.

  As shown in FIG. 17, the outer periphery of the bipolar unit cell 110 in which the electrodes, the first and second seal precursors 114 and 116, created in the above-described seal precursor placement step, are placed in the holding means 146 and 148. When placed, the holding means 147 and 149 are set on the holding means 146 and 148 from above, and the outer periphery of the bipolar unit cell 110 is gripped. Thereafter, the holding means 146 and 147 and the holding means 148 and 149 are separated from each other, whereby tension is applied to the bipolar unit cell 110 and generation of wrinkles is suppressed.

  In this embodiment, an electrolyte layer formation process is implemented in an electrode set preparation process. Excluding the bipolar unit cell 110F held at the bottom, the negative electrode 113 of the five bipolar unit cells 110A to 110E, 1 ml of electrolyte solution is placed on the separator 120, for example, using a micropipette, It is infiltrated by dropping on the separator 120.

The electrolytic solution contains an organic solvent composed of PC (propylene carbonate) and EC (ethylene carbonate), a lithium salt (LiPF ₆ ) as a supporting salt, and a small amount of a surfactant. The lithium salt concentration is 1M.

  Thereafter, in order to correspond to the set state in the electrode stocker 150 as shown in FIG. 18, the bipolar unit cell 110 is inverted together with the holding means 146 to 149. Thereby, the separator 120 which is porous (has air permeability) and is difficult to adsorb is positioned on the back surface.

  Next, a charging operation which is a part of the electrode setting process will be described in detail.

  As shown in FIG. 19, when the holding means 146 and 148 are separated from the holding means 147 and 149, the suction cup 142 of the charging device 140 is positioned on the outer peripheral portion of the bipolar unit cell 110 and starts sucking.

  Further, as shown in FIG. 20, the suction cups 142 are separated from each other while the outer periphery of the bipolar unit cell 110 is attracted, so that tension is applied to the bipolar unit cell 110 and then lifted toward the electrode stocker 150. To do.

  Next, the receiving operation in the electrode setting process will be described. 21 to 25 are cross-sectional views for explaining advancement, separation, stop, gripping, and raising in the receiving operation, respectively.

  The input device 140 moves toward the electrode stocker 150 and, when positioned above the electrode stocker 150, descends toward the position where the corresponding clamp mechanism 190 is disposed.

  When the bipolar unit cell 110 held by the input device 140 is positioned in front of the clamp mechanism 190, the drive rod 198 starts to advance from the retracted position toward the clamp mechanism 190 of the electrode stocker 150 (FIG. 21). reference).

  When the advancement continues, the drive rod 198 passes through the through hole 196 of the guide block 195, presses the movable block 197, and moves toward the lower step 192 of the lower arm 191. The movable block 197 contacts the second upper inclined portion 194 of the upper arm 193 and causes the upper arm 193 to rise. Thereby, the front-end | tip part of the lower arm 191 and the front-end | tip part of the upper arm 193 are spaced apart (refer FIG. 22).

  When the forward movement is further continued, the drive rod 198 comes into contact with the lower step portion 192 of the lower arm 191, whereby the entire clamp mechanism 190 starts moving toward the support structure 154 of the electrode stocker 150. Then, the lower step 192 of the lower arm 191 abuts on the support structure 154, whereby the forward movement of the clamp mechanism 190 is stopped (see FIG. 23).

  Accordingly, the tip of the lower arm 191 is positioned below the outer peripheral portion of the positioned bipolar unit cell 110, and the protrusion 199 of the upper arm 193 is positioned inside the support structure 154. Become.

  Thereafter, the drive rod 198 is retracted. Since the movable block 197 is released from being pressed by the drive rod 198, the movable block 197 is retracted similarly to the drive rod 198, causing the upper arm 193 to descend.

  Thus, the outer peripheral portion of the bipolar unit cell 110 is gripped by the distal end portion of the lower arm 191 and the distal end portion of the upper arm 193, and tension is applied to the bipolar unit cell 110 (see FIG. 24). On the other hand, since the protruding portion 199 of the upper arm 193 is exposed from the through hole at the distal end portion of the lower arm 191, it comes into contact with the inside of the support structure 154 and prevents the entire clamping mechanism 190 from retreating. That is, the gripping operation of the bipolar unit cell 110 and the movement operation from the retracted position to the gripping position are interlocked.

  When the gripping of the outer peripheral portion of the bipolar unit cell 110 is completed, the operation of the suction cup 142 of the input device 140 is stopped, and after opening the bipolar unit cell 110, the input device 140 rises and the next bipolar unit cell is released. In order to adsorb the battery 110, it moves toward the holding means 146, 148 (see FIG. 25).

  Thereafter, the support structure 154 of the electrode stocker 150 is lowered by the Z-axis moving means, and the clamp mechanism 190 corresponding to the bipolar cell 110 to be inserted next is positioned at a position corresponding to the drive rod 198.

  By repeating such a loading operation and a receiving operation, the bipolar unit cell 110 is set in the electrode stocker 150 with the negative electrode face up (see FIG. 16).

  26 is a schematic diagram for explaining the vacuum processing apparatus according to the vacuum introduction process to the vacuum release process shown in FIG. 5, and FIG. 27 is a schematic diagram for explaining the electrode stacking process shown in FIG. 28 to 31 are cross-sectional views for explaining the release operation in the electrode stacking process in detail, showing forward, separation, backward and downward, respectively, and FIG. 32 explains the pressing process shown in FIG. FIG. 33 is a cross-sectional view for explaining the pressurization and holding step shown in FIG.

  As shown in FIG. 26, the vacuum processing apparatus 160 includes a vacuum unit 162, an electrode stacking unit 158, a pressing unit 172, and a control unit 178.

  The vacuum unit 162 includes a vacuum chamber 163, a vacuum pump 164, and a piping system 165. The vacuum chamber 163 has a detachable (openable) lid, and a fixed base on which the electrode stocker 150 and the press means 172 are arranged. The vacuum pump 164 is, for example, a centrifugal type, and is used to bring the inside of the vacuum chamber 163 into a vacuum state. The piping system 165 is used to connect the vacuum pump 164 and the vacuum chamber 163, and a leak valve (not shown) is arranged.

  The electrode stacking unit 158 includes a space in which the electrode stocker 150 is installed, a receiving table 156 that receives the stacked body 100, a transport unit 157 that moves the receiving table 156, and a drive rod 198, and further includes an electrode stacking unit. 158 is provided with Z-axis moving means 155 (not shown) for moving the support structure 154 toward the cradle 156 in the stacking direction. Since the Z-axis moving unit 155 moves the support structure 154 relative to the receiving base 156, the installation space can be used effectively. In particular, since the electrode stocker 150 is disposed inside the vacuum processing apparatus 160, it is possible to reduce the equipment cost by downsizing the vacuum processing apparatus 160 by downsizing the electrode stocker 150. .

  When the Z-axis moving means is disposed on the support structure 154, the structure of the cradle 156 and its surroundings can be simplified. However, the Z-axis moving means is disposed on the cradle 156 and supports the cradle 156. It is also possible to move relative to the structure 154. In this case, the support structure 154 is fixed, and the cradle 156 moves inside the support structure 154, so that the support structure 154 can be prevented from shaking. Further, the Z-axis moving means 155 and the drive rod 198 are not disposed in the electrode stacking portion 158 but are disposed in the vacuum chamber 163 as a part of the electrode stocker 150 as an integral part of the support structure 154. Also good.

  The cradle 156 is used for forming, transporting, and pressing the laminated body 100 of the bipolar unit cells 110, and the transport means 157 is disposed.

  The stacked body 100 has the bipolar unit cells 110 sequentially mounted, that is, the positive electrode 113 disposed on one surface of the current collector 111 and the negative electrode 112 disposed on the other surface of the current collector 111. It is formed by alternately arranging bipolar electrodes and separators 120 constituting the electrolyte layer on the cradle.

The conveying means 157 is, for example, a belt conveyor, and is used for moving the cradle 156 to the next process. Therefore, it is possible to transport the laminated body 100 to the next process in a state where it is disposed on the cradle 156. This eliminates the need for handling for removing the laminate 100 from the cradle 156 during transport, and avoids the occurrence of misalignment. The conveying means is not limited to a belt conveyor, and can be configured as a separate body from the receiving table 156.
The press unit 172 includes a base plate 174, a press plate 176 that is arranged to be close to and away from the base plate 174, a lower heating unit 175, and an upper heating unit 177.

  On the base plate 174, a cradle 156 that is transported in a state where the stacked body 100 is disposed is placed. The cradle 156 functions as a lower press plate. Therefore, handling for removing the laminated body 100 from the cradle 156 becomes unnecessary during pressing, and the occurrence of deviation can be avoided.

  The press plate 176 is used to press the stacked body of the bipolar unit cells 110 in cooperation with the cradle 156.

  The lower heating means 175 and the upper heating means 177 have, for example, resistance heating elements, are disposed inside the base plate 174 and the press plate 176, and are used to raise the temperature of the base plate 174 and the press plate 176. Is done.

  The control unit 178 is used to sequentially stack the bipolar unit cells 110 held by the clamp mechanism 190 on the cradle 156. For example, the control unit 178 controls the holding and release of the bipolar unit cells 110 by the clamp mechanism 190 and By controlling the Z-axis moving means 155 and controlling the movement and pressing force of the press plate 176 and the temperatures of the lower heating means 175 and the upper heating means 177, an appropriate heat press for the laminate of the bipolar unit cells 110 is performed. Is used to carry out under vacuum.

  One of the lower heating means 175 and the upper heating means 177 can be omitted, or the lower heating means 175 and the upper heating means 177 can be arranged outside the base plate 174 and the press plate 176. The base plate 174 can be omitted as appropriate.

Moreover, the laminated body 100 is not limited to the structure directly pressed by the receiving stand 156 and the press plate 176. For example, a sheet-like elastic body can be disposed on the cradle 156 and the press plate 176.
Next, a vacuum introduction process to a vacuum release process to which the vacuum processing apparatus 160 is applied will be sequentially described.

  In the vacuum introduction process, the lid of the vacuum chamber 163 is removed, and the electrode stocker 150 holding the bipolar unit cell 110 is disposed at the base of the vacuum chamber 163. When the lid of the vacuum chamber 163 is attached and the vacuum chamber 163 is sealed, the vacuum pump 164 is operated and the inside of the vacuum chamber 163 is evacuated.

  In the electrode stacking step, the support structure 154 of the electrode stocker 150 is moved toward the cradle 156 under vacuum by the Z-axis moving means. That is, the holding mechanism (clamp mechanism 190) and the cradle 156 are relatively close to each other by the Z-axis moving unit in the stacking direction. Since the relative movement suppresses the shake of the bipolar unit cell 110, the bipolar unit cells 110 are stacked with high accuracy.

  On the other hand, when the bipolar unit cell 110 held by the clamp mechanism 190 of the support structure 154 comes into contact with the cradle 156, the drive rod 198 of the clamp mechanism 190 is controlled to hold the bipolar unit cell 110. Eliminate.

  Then, by continuing to move the support structure 154 with respect to the cradle 156, the bipolar unit cells 110F to 110A are sequentially stacked (see FIG. 27).

  As described above, blurring of the bipolar unit cell 110 is suppressed, and the bipolar unit cell 110 can be stacked with high accuracy. Therefore, the occurrence of displacement between the bipolar electrode and the electrolyte layer constituting the bipolar unit cell 110 is suppressed and the occurrence of an internal short circuit can be avoided, so that the occurrence of defective products can be reduced.

In addition, since the layers are stacked under vacuum, mixing of bubbles with respect to the stack interface between the electrode and the electrolyte layer is suppressed. Therefore, the movement of ions during use is not harmed and the battery resistance does not increase, so that a high output density can be achieved. That is, since a bipolar battery in which mixing of bubbles is suppressed is obtained, the movement of ions during use is not hindered and the battery resistance does not increase, so that a high output density can be achieved.
The laminated body 100 is conveyed to a press process in the state arrange | positioned at the receiving stand 156. FIG. This eliminates the need for handling for removing the laminate 100 from the cradle 156 during transport, and avoids the occurrence of misalignment.

  Next, the release operation for eliminating the holding of the bipolar unit cell 110 will be described in detail.

  The drive rod 198 starts to advance from the retracted position toward the support structure 154 of the electrode stocker 150 (see FIG. 28). At this time, the outer periphery of the bipolar unit cell 110 is gripped by the tip of the lower arm 191 and the tip of the upper arm 193. Further, the protruding portion 199 of the upper arm 193 is exposed from the through hole at the distal end portion of the lower arm 191 and contacts the inside of the support structure 154, thereby preventing the entire clamp mechanism 190 from retreating.

  When the drive rod 198 continues to advance, the drive rod 198 passes through the through hole 196 of the guide block 195, presses the movable block 197, and moves toward the lower step 192 of the lower arm 191. The movable block 197 contacts the second upper inclined portion 194 of the upper arm 193 and causes the upper arm 193 to rise. Thereby, the front-end | tip part of the lower arm 191 and the front-end | tip part of the upper arm 193 are spaced apart (refer FIG. 29). As a result, the protruding portion 199 of the upper arm 193 rises, and the contact with the inner side of the support structure 154 is eliminated.

  Thereafter, when the drive rod 198 moves backward toward the retracted position, the entire clamp mechanism 190 moves in a direction away from the bipolar unit cell 110 (see FIG. 30).

  The drive rod 198 continues to retract, and the tip of the lower arm 191 moves away from the outer periphery of the bipolar unit cell 110, so that the bipolar unit cell 110 falls and is placed on the cradle 156 of the electrode stocker 150. Will be placed. That is, the grip removal operation and the movement operation to the retracted position are linked.

  Thereafter, the support structure 154 of the electrode stocker 150 is lowered by the Z-axis moving means, and the clamp mechanism 190 that holds the bipolar cell 110 to be released next is positioned at a position corresponding to the cradle 156 and the drive rod 198. (See FIG. 31).

  By repeating such a release operation, the stacked body 100 of the bipolar unit cells 110 held by the clamp mechanism 190 is formed on the cradle 156 (see FIG. 27).

  In the pressing process, the cradle 156 of the electrode stocker 150 is disposed on the base plate 174 (see FIG. 32). At this time, the pedestal 156 holds the stacked body 100 of the bipolar unit cells 110 formed by the electrode stacking process.

The press plate 176 descends toward the cradle 156 and cooperates with the cradle 156 functioning as the other press plate, thereby pressing the laminate 100 and applying a surface pressure of 1.0 × 10 ⁵ Pa.

  Since the laminated body 100 is not removed from the cradle 156 after the formation, and the occurrence of deviation is suppressed, the laminated body 100 is pressed evenly.

  On the other hand, the lower heating means 175 and the upper heating means 177 are operated to heat the stacked body of the cradle 156 and the bipolar unit cell 110 via the base plate 174 and the press plate 176. The laminated body of the bipolar unit cells 110 is heated to 80 ° C., which is the curing temperature of the one-component uncured epoxy resin constituting the first seal precursor 114 and the second seal precursor 116.

The first seal precursor 114 and the second seal precursor are held for 1 hour under the pressing conditions (surface pressure 1.0 × 10 ⁵ Pa and 80 ° C.) while maintaining the vacuum state in the electrode lamination step. 116 hardens | cures, the 1st seal | sticker 115 and the 2nd seal | sticker 117 of predetermined thickness are formed, and the laminated body 100 is obtained.

  In addition, since a press is laminated | stacked under a vacuum, it can suppress that purge gas mixes into a lamination | stacking interface. Further, by controlling the distance between the cradle 156 and the press plate 176 at the time of pressing and setting the thickness of the laminate 100 to a predetermined value, it is possible to reduce the volume and the electrolyte resistance. Since it is a heating press, the first seal precursor 114 and the second seal precursor 116 are cured simultaneously, so that the manufacturing process can be shortened.

  Further, in order to shorten the time of the pressing process, an oven for preheating the electrode stocker 150 can be arranged, or the heating means 182 can be built in the cradle 156. Furthermore, it is possible to shorten the time of the pressing process by operating the lower heating means 175 and the upper heating means 177 and preheating the base plate 174 and the press plate 176 before the cradle 156 is arranged. is there.

  In the vacuum release process, the vacuum pump 164 is stopped, and the vacuum state of the vacuum chamber 163 is released by opening the leak valve. The press plate 176 is raised and the lid of the vacuum chamber 163 is removed. The cradle 156 of the electrode stocker 150 arranged on the base plate 174 is taken out while holding the stacked body 100. Further, parts of the electrode stocker 150 other than the cradle 156 are also taken out.

  In the pressurizing and holding step, the pressurized state of the heat-pressed laminate 100 is held by the pressurizing and holding means 183 until it is transferred to the casing step (see FIG. 33).

  The pressure holding unit 183 includes a support plate 184, a pressing plate 185, and a weight 186. The stacked body 100 is disposed on the support plate 184. The pressing plate 185 is disposed on the upper surface of the stacked body 100. The weight 186 is disposed on the upper surface of the pressing plate 185.

  Therefore, the weight 186 can generate a pressing force for maintaining the pressurized state of the stacked body 100 by its own weight. The weight of the weight 186 is appropriately set in consideration of physical properties such as the press pressure and the strength of the constituent material of the laminate 100.

  The pressing force in the pressurizing and holding unit 183 is not limited to using the weight of the weight 186, and for example, a pair of arms that use urging by an elastic member such as a spring or screw tightening by a fastening member. It is also possible to use a clamping mechanism having

  In the casing step, the stacked body 100 in which the pressurized state is maintained is removed from the pressurizing / holding means 183 and accommodated in the outer case 104 (see FIGS. 1 and 2). The exterior case 104 is formed, for example, by joining outer peripheral portions of a sheet-shaped exterior material. The exterior material is, for example, a polymer-metal composite laminate film in which a metal such as aluminum is covered with an insulator such as a polypropylene film, and the bonding is, for example, heat sealing, impulse sealing, ultrasonic fusion, high frequency fusion Thermal fusion such as is applied.

  FIG. 34 is a schematic diagram for explaining a modification according to the present embodiment.

  It is also possible to arrange a correction means for correcting a positional shift at the time of relative movement of the bipolar unit cell 110 in the electrode stocker 150. The correcting means includes a position sensor 159 disposed on the support structure 154 and an XY axis moving means (not shown) disposed on the cradle 156.

  The position sensor 159 is disposed at a position corresponding to the four sides of the bipolar unit cell 110 on the upper surface of the support structure 154, and constitutes a two-dimensional position detection unit. Therefore, the position sensor 159 can detect a positional shift when the bipolar unit cell 110 is relatively moved, that is, when the bipolar unit cell 110 is moved toward the cradle 156. As the two-dimensional position detection means, for example, a CCD (solid-state imaging device) image sensor can be used. In this case, the two-dimensional position detection means can be configured by disposing at one of the four corners on the upper surface of the support structure 154.

  The XY axis moving means is used to move the cradle 156 in the surface direction of the bipolar unit cell 110.

  Therefore, when the position sensor 159 detects a positional shift in the relative movement of the bipolar unit cell 110, the position in the surface direction of the cradle 156 is adjusted by controlling the XY axis moving means. Further, the stacking accuracy can be further improved. Further, since the cradle 156 is irrelevant to the holding mechanism, the movement of the cradle 156 does not affect the position of the bipolar unit cell 110 and the positional deviation can be easily adjusted.

  Note that the XY-axis moving means is not limited to being disposed on the cradle 156, and by placing it on the holding mechanism, the structure of the cradle 156 and the vicinity thereof can be simplified. Further, the Z-axis moving means can be arranged in the clamp mechanism 190. By making one axial direction of the XY axis moving means coincide with the moving direction of the cradle 156 to the next process, the XY axis moving means can also be used as a moving mechanism for the cradle 156 to the next process. It is.

  As described above, the present embodiment can provide an electrolytic bipolar battery manufacturing method with good working efficiency and an electrolytic bipolar battery manufacturing apparatus that can be easily made compact. is there.

  In addition, it is also possible to laminate | stack alternately with a bipolar type electrode (bipolar type | mold battery with no electrolyte layer arrange | positioned) by making an electrolyte layer (separator) into a different body. In this case, the holding mechanism holds the electrolyte layer and the bipolar electrode alternately and separately, and the support structure 154 is aligned in the stacking direction so that the bipolar electrode and the electrolyte layer are aligned and do not contact each other. It will be attached.

  In addition, the electrode setting process is preferably performed in the atmosphere in consideration of the installation process and the like, but may be performed in a vacuum as necessary.

  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims.

It is a perspective view for demonstrating the bipolar battery which concerns on embodiment of this invention. It is sectional drawing for demonstrating the bipolar battery which concerns on embodiment of this invention. It is a perspective view for demonstrating the assembled battery using the bipolar battery shown by FIG. It is the schematic of the vehicle by which the assembled battery shown by FIG. 3 is mounted. It is process drawing for demonstrating the manufacturing method of the bipolar battery which concerns on embodiment of this invention. It is a front view for demonstrating the positive electrode which concerns on the electrode formation process shown by FIG. It is a rear view for demonstrating the negative electrode which concerns on the electrode formation process shown by FIG. It is sectional drawing regarding line VIII-VIII of FIG. It is a front view for demonstrating the 1st seal precursor of the seal precursor arrangement | positioning process shown by FIG. It is sectional drawing regarding line XX of FIG. It is a front view for demonstrating the 2nd seal precursor of the seal precursor arrangement | positioning process shown by FIG. It is sectional drawing regarding the line XII-XII of FIG. It is the schematic for demonstrating the injection | throwing-in apparatus and electrode stocker which concern on the electrode setting process shown by FIG. It is the schematic for demonstrating the arrangement position of the clamp mechanism shown by FIG. FIG. 14 is a detailed view of the clamp mechanism shown in FIG. 13 viewed from the stacking direction. It is sectional drawing of the clamp mechanism shown by FIG. It is sectional drawing for demonstrating an electrode setting process. It is sectional drawing for demonstrating the injection | throwing-in operation | movement in an electrode setting process, and has shown mounting. It is sectional drawing for demonstrating inversion following FIG. It is sectional drawing for demonstrating suction following FIG. FIG. 20 is a cross-sectional view for explaining the rise following FIG. 19. It is sectional drawing for demonstrating acceptance operation | movement in an electrode setting process, and has shown advance. It is sectional drawing for demonstrating separation following FIG. It is sectional drawing for demonstrating a stop following FIG. It is sectional drawing for demonstrating holding | grip following FIG. FIG. 25 is a cross-sectional view for explaining the descent following FIG. 24. It is the schematic for demonstrating the vacuum processing apparatus which concerns on the vacuum introduction process-vacuum release process shown by FIG. It is the schematic for demonstrating the electrode lamination process shown by FIG. It is sectional drawing for detailed release operation | movement in an electrode lamination process, and has shown advance. It is sectional drawing for demonstrating separation following FIG. FIG. 30 is a cross-sectional view for explaining retreat following FIG. 29. It is sectional drawing for demonstrating a raise following FIG. It is sectional drawing for demonstrating the press process shown by FIG. It is sectional drawing for demonstrating the pressurization holding process shown by FIG. It is the schematic for demonstrating the modification based on embodiment of this invention.

Explanation of symbols

10. Bipolar battery,
100 ... Laminated body,
101, 102 ... Terminal plate,
104 .. Exterior case,
110 (110A to 110F) .. Bipolar cell,
111 .. current collector,
112 .. Negative electrode,
113 .. Positive electrode,
114 .. First seal precursor,
115 .. First seal,
116 .. Second seal precursor,
117 .. second seal,
120 .. separator
130..Battery,
132,134 ... conductive bar,
136 .. Battery module,
138..Vehicle,
140 .. Loading device,
142 .. Suction cup,
144 .. arm part,
146-149 .. Holding means,
150 .. electrode stocker,
154 .. Support structure,
156 ... the cradle,
157 .. transportation means,
158 .. Electrode laminated part,
159 .. Position sensor,
160 ... Vacuum processing equipment,
162..Vacuum means,
163 ... Vacuum chamber,
164 ... Vacuum pump
165 ... Piping system
172 ..Pressing means,
174 .. Base plate,
175 .. Lower heating means,
176 ... Press plate,
177 .. Upper heating means,
178 .. Control part,
183..Pressure holding means,
184 .. Support plate,
185 ... Pressing plate,
186 ・ ・ Weight,
190 .. Clamp mechanism
191, lower arm,
192 ... Lower step,
193..Upper arm,
194 ... Upward inclined part,
195 ... Guide block,
195b ... Spring
195a .. support rod,
196 .. through hole,
197 · · movable block,
198 ・ ・ Drive rod,
199 ... Projection.

Claims (16)

Bipolar electrodes having a current collector, a positive electrode disposed on one surface of the current collector, and a negative electrode disposed on the other surface of the current collector, and separators are alternately disposed on a cradle, An apparatus for manufacturing a bipolar battery for forming a laminated body, comprising: an electrode setting means for arranging and storing a plurality of the bipolar electrodes and the separator in a state in which they are not in contact with each other at intervals in the stacking direction. Have
The electrode setting means includes
A clamping mechanism for gripping the outer periphery of the bipolar electrode and the separator , and
A support structure on which the clamping mechanism is disposed;
The clamp mechanism moves in a direction perpendicular to the stacking direction with respect to the support structure to a gripping position that overlaps a projection surface of the bipolar electrode when performing the gripping, and the bipolar type when canceling the gripping. An apparatus for manufacturing a bipolar battery, wherein the device is supported by the support structure so as to be movable in a direction perpendicular to the stacking direction with respect to the support structure to a retracted position that does not overlap the projection surface of the electrode. The clamping mechanism, gripping operation and the bipolar electrode and the separator, interlocking means and the moving operation from the retracted position to the gripping position of the bipolar electrode and the separator, and the resolving of the gripping, the 2. The bipolar battery manufacturing apparatus according to claim 1, further comprising means for interlocking with the moving operation to the retreat position. The clamp mechanism includes a movable block that moves in a direction perpendicular to the stacking direction in order to perform gripping and releasing operations of the clamp mechanism,
By moving the movable block of the clamp mechanism in the retracted position in a direction perpendicular to the stacking direction, the clamping mechanism is released, and further, the movable block is moved in a direction perpendicular to the stacking direction to perform clamping. The bipolar battery according to claim 2, wherein the clamping mechanism is gripped by moving the mechanism to a gripping position and retracting the movable block from a moving state in a direction perpendicular to the stacking direction. apparatus.   By moving the movable block of the clamp mechanism in the gripping position in a direction perpendicular to the stacking direction, the clamp mechanism is released from the gripping operation, and the movable block is moved from a state perpendicular to the stacking direction. The bipolar battery manufacturing method according to claim 3, wherein the clamp mechanism is moved to a retracted position by retracting. The bipolar electrode and the separator have a substantially rectangular shape,
5. The bipolar battery manufacturing apparatus according to claim 1, wherein two opposing sides of the bipolar electrode and the separator are gripped by the clamp mechanism. 6. 6. The bipolar battery manufacturing apparatus according to claim 1, wherein an arrangement interval of the clamp mechanism in the stacking direction is larger than a deflection amount of the bipolar electrode and the separator . The said clamp mechanism has an elastic member which exhibits the elastic force for hold | gripping in the state which gave tension | tensile_strength to the said bipolar electrode and the said separator , The Claim 1 characterized by the above-mentioned. Bipolar battery manufacturing equipment.   The bipolar battery manufacturing apparatus according to any one of claims 1 to 7, further comprising Z-axis moving means for relatively moving the support structure and the cradle in the stacking direction.   The bipolar battery manufacturing apparatus according to any one of claims 1 to 8, further comprising a pressure reducing means for executing lamination of the bipolar electrodes on the electrode setting means and the cradle under reduced pressure. . The bipolar electrode and the separator are integrated in advance and are held by the electrode setting means in a state where a seal precursor is disposed. Bipolar battery manufacturing equipment.   The bipolar battery manufacturing apparatus according to claim 10, wherein the seal precursor is a thermosetting resin or a thermoplastic resin.   The bipolar battery manufacturing apparatus according to any one of claims 1 to 11, wherein the bipolar battery is a lithium secondary battery. Current collector, positive electrode disposed on one surface of the current collector, and bipolar electrode having a negative electrode disposed on the other surface of the current collector, separators are alternately stacked on a cradle, A method of manufacturing a bipolar battery for forming a laminate,
A plurality of bipolar electrodes and the outer peripheral portion of the separator can be moved in a direction perpendicular to the stacking direction with respect to the support structure to a holding position where the projection structure of the bipolar electrode overlaps the support structure of the electrode setting means An electrode setting process for storing in a state in which the clamp mechanism is sequentially held by the arranged clamp mechanism and is not in contact with each other with an interval in the stacking direction;
The electrode setting means is disposed on a receiving base to eliminate the gripping, and the clamp mechanism is moved to a retracted position that does not overlap with the projection surface of the bipolar electrode in a direction perpendicular to the stacking direction with respect to the support structure. A bipolar battery manufacturing method comprising: a stacking step of forming a stacked body on a cradle by moving and sequentially eliminating gripping. 14. The method of manufacturing a bipolar battery according to claim 13 , wherein the electrode setting means and the cradle are relatively moved in the stacking direction in the stacking step. Bipolar according to claim 13 or 14, characterized in that the preparation step of preparing a bipolar electrode and the separator was arranged a seal precursor is previously integrated with the bipolar electrode and the separator before the electrode set step Battery manufacturing method. Performing the electrode setting step at atmospheric pressure,
The method for manufacturing a bipolar battery according to any one of claims 13 to 15 , wherein the stacking step is performed under reduced pressure.

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