JP2013191452A - Manufacturing apparatus, manufacturing method and inspection method for battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing apparatus, manufacturing method and an inspection method for a battery adaptable for a box-shaped battery case.SOLUTION: A manufacturing apparatus for a battery B comprises: a battery case C having an opening C2 at a side face thereof leading to an outside; and a battery sealing electrolyte therein and housed in the battery case C. The manufacturing apparatus for a battery B further comprises: a side face clamp 20 contacting through a seal material 20A to the side face including the opening C2 and a bottom face of the battery case C; and an upper clamp 21 attached through parallel links 24A, 24B to the side clamp 20 so that the upper clamp 21 contacts an upper face continued from the side face including the opening C2 through the seal material 21A, approaching from an upper direction in accordance with approach of the side clamp 20 toward the battery case C. Then, the side clamp 20 and the upper clamp 21 clamp the battery case C to seal the surroundings of the opening C2, and a liquid leak measuring device 4 to introduce air in the battery case C through the opening C to measure electrolyte volatile component included in the air introduced.

Description

  The present invention relates to a battery manufacturing apparatus, a manufacturing method, and an inspection method for inspecting battery leakage.

  2. Description of the Related Art Conventionally, as a method for inspecting electrolyte leakage due to poor sealing of a lithium ion battery, a method of detecting an electrolyte leaking from a lithium ion battery with an odor sensor has been proposed (see Patent Document 1).

  This is because a sealed container is fitted to the sealing part of the lithium ion battery assembly through an O-ring, and the inside of the container is depressurized, and the volatile component of the electrolyte contained in the atmosphere in the container is detected by an odor sensor. Thus, the presence or absence of leakage of the electrolyte is determined.

Japanese Patent Laid-Open No. 10-172618

  By the way, a lithium ion battery includes a battery pack in which a plurality of unit cells are combined or a battery module in which a plurality of battery packs are incorporated. In such a battery pack or battery module, the battery case containing the battery element may have a box shape, and the surface of the battery case may be uneven due to protrusions or depressions. When applying the above-described conventional inspection method to a battery case having such a box shape and an uneven surface, there is a problem that a sealed container cannot be fitted through an O-ring or the like. is there.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a battery manufacturing apparatus, a manufacturing method, and an inspection method applicable to a box-shaped battery case.

  The present invention is directed to a battery manufacturing apparatus including a battery case having an opening communicating with the outside on at least a part of a side surface, and a battery in which an electrolytic solution is enclosed and accommodated in the battery case. And in this invention, the side surface clamp which contact | abuts via the sealing material on the side and lower surface including the opening of the battery case which accommodated the battery which enclosed the electrolyte solution is provided. In addition, according to the approach of the side clamp to the battery case, the upper clamp attached via the parallel link to the side clamp so as to approach the upper surface connected to the side including the opening from above via the sealing material. Prepare. And the inspection head which clamps a battery case by a side clamp and an upper clamp and seals the circumference of an opening of a battery case is constituted. And the liquid leak measuring apparatus which suck | inhales the air in a battery case via opening of a battery case and measures the volatile component of the electrolyte solution contained in the sucked air is provided.

  Therefore, in the present invention, any sealing material provided on the clamp can be brought into contact with the contact surface of the battery case without rubbing, and can be applied to a battery having a box-shaped battery case. .

BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram of the manufacturing apparatus of a battery which shows one Embodiment of this invention, a manufacturing method, and an inspection method. The top view (A) and side view (B) of a battery. The side view which shows the structure of the test | inspection head and actuator of a battery liquid leak test | inspection apparatus. The side view which shows the operating state of the test | inspection head and actuator of a battery liquid leak test | inspection apparatus. The side view which shows the state of the start of return from the operating position of the test | inspection head and actuator of a battery liquid-leakage inspection apparatus. The side view which shows the state which returned to the standby position in the state which the inspection head closed. The side view which shows the structure of the test | inspection head and actuator of a battery liquid leak test | inspection apparatus which shows 2nd Embodiment of this invention. The side view which shows the operating state of the test | inspection head and actuator of a battery liquid leak test | inspection apparatus.

  Hereinafter, a battery manufacturing apparatus, a manufacturing method, and an inspection method of the present invention will be described based on each embodiment.

(First embodiment)
FIG. 1 is an explanatory diagram showing a battery manufacturing process to which the battery manufacturing apparatus, manufacturing method, and inspection method of the first embodiment to which the present invention is applied.

  As shown in FIG. 1, the battery manufacturing apparatus according to the present embodiment includes a battery pack in which a plurality of lithium ion batteries are built in a battery case C and a battery module in which a plurality of battery packs are combined in a battery case C. The liquid leakage inspection process S of the battery B at the final stage of the manufacturing process is targeted. In the liquid leakage inspection process S of the battery B, the battery B (battery pack or battery module) carried by the conveyor from the manufacturing process is inspected for the presence of electrolyte leakage. Note that the battery leakage inspection of the present embodiment is not limited to the manufacturing process of the battery B (battery module or battery pack) described above, but also applies to the battery B (battery module or battery pack) in use. be able to.

  In the liquid leakage inspection process S, the rotation (direction) direction of the battery B is first adjusted by the rotary stage S1. Next, the battery B is transported to the inspection stage S2 by the conveyor, and the liquid leakage inspection is executed by the liquid leakage inspection device 1 of the battery B (battery module or battery pack) at the inspection stage S2, and the battery B after the liquid leakage inspection is completed. Is conveyed onto the buffer conveyor S3. The controller 5 controls the operation of the conveyor S3 and the positioning operation on the rotary stage S1 and the inspection stage S2.

  Here, prior to detailed description of the liquid leakage inspection apparatus 1, a battery module as the battery B to which the liquid leakage inspection apparatus 1 of the present embodiment is applied will be described. FIG. 2 is a plan view and a side view of the battery module. The battery case C is composed of a container whose upper side is open and a lid body that closes the opening of the container. A plurality of battery packs P are built in the container, and the opened edge of the container and the edge of the lid body are tightened together. The battery module is constituted by the part M. The winding part M has a ridge shape formed on the upper edge of the battery case C and protruding upward.

  In the battery case C, a plurality of (for example, four) battery packs P are stacked and inserted. The battery packs P are electrically connected to each other, and the common terminal T (plus, minus, control) is drawn out from an opening C1 provided on one side of the battery case C. The battery case C is provided with an opening C2 on the side facing the one side where the opening C1 for exposing the terminal T to the outside is provided, and at the bottom and the lid of the battery case C. The positioning hole C3 is opened. The positioning hole C3 is used for positioning the battery case C during assembly as a battery module and when the battery module is mounted on a target device.

  The space in the battery case C has a large number of gaps between the battery pack P and the wall surface of the battery case C, and communicates with the outside air through openings C1 and C2 provided on opposite side surfaces. The battery case C is positioned at the leakage inspection stage S2 such that the side surface including the opening C2 opposite to the terminal T side faces the liquid leakage inspection apparatus 1 of the battery B.

  In the battery B described above, when the electrolyte solution leaks from the battery pack P, it is difficult to visually confirm from the outside. Hereinafter, the above-described battery B will be described as an electrolyte leakage inspection target, but it may be a box-shaped battery pack P or a single lithium ion battery.

  In the inspection stage S2, the battery case C is positioned in an inspectable state using a positioning hole C3 described later. The liquid leakage inspection apparatus 1 includes an inspection head 2 that engages with the battery case C, and an actuator 3 that moves the inspection head 2 between an engagement position where the inspection head 2 engages with the battery case C and a standby position retracted from the battery case C. With. In addition, the liquid leakage inspection apparatus 1 includes a liquid leakage measurement apparatus 4 that measures the volatile components of the electrolyte contained in the sucked air by sucking the atmosphere in the battery case C through the inspection head 2.

  FIG. 3 shows the configuration of the inspection head 2 and the actuator 3 of the liquid leakage inspection apparatus 1 in a state where the liquid leakage inspection apparatus 1 has advanced by a predetermined amount from the standby position. The air cylinder as the actuator 3 includes a piston rod 31 that can be expanded and contracted between an end limit position and a return limit position. When the piston rod 31 is positioned at the end limit position and the return limit position, the position information is input to the controller 5. Is done. The operation of the actuator 3 to the return limit and the output limit is controlled by the controller 5. Here, the advancing direction of the piston rod 31 is assumed to be the front, the contraction direction is assumed to be the rear, and the left-right direction and the up-down direction of each member will be described with reference to the expansion / contraction direction of the piston rod 31. The inspection head 2 is fixed to the tip of the piston rod 31 via an adjustment nut 32, and the position of the inspection head 2 in the front-rear direction with respect to the piston rod 31, that is, the head pressing allowance, adjusts the tightening position of the adjustment nut 32. It is possible to adjust by doing.

  The inspection head 2 includes a side clamp 20 that contacts the lower surface of the battery case C and the front side surface of the battery case C, and an upper clamp 21 that contacts the upper surface of the battery case C. Cushioning sealing materials 20A and 21A are attached to the surfaces of the side clamp 20 and the upper clamp 21 that are in contact with the battery case C by pasting or the like. The upper clamp 21 and the side clamp 20 include extensions 20 </ b> B and 21 </ b> B that extend rearward from the battery case C from the region in contact with the battery case C. The extensions 20B and 21B are connected to two parallel links 24A and 24B arranged in the front-rear direction and extending in the up-down direction via pins.

  The front link 24 </ b> A disposed in front of the battery case C side of the parallel links 24 </ b> A and 24 </ b> B is further extended downward from the extension portion 20 </ b> B of the side clamp 20, and between the extended lower end and the side clamp 20. A tension spring 25 is arranged. The tension spring 25 acts as an unclamp by urging the parallel links 24A and 24B upright in the vertical direction and urging the upper clamp 21 and the side surface clamp 20 in the vertical direction.

  Of the parallel links 24A and 24B, the rear link 24B disposed rearward from the battery case C is further extended downward from the extension of the side clamp 20, and the lower end of the extension 24C is bent obliquely forward. A bent portion 24D is formed. When the inspection head 2 is advanced by a predetermined amount from the standby position (FIG. 3), the side surface in front of the bent portion 24D at the lower end of the extended portion 24C begins to extend forward from the mounting base of the actuator 3. The tip is engaged.

  An adjustment bolt nut 34 that adjusts the engagement position with the lower end of the rear link 24B in the front-rear direction is provided at the tip of the stopper bracket 33. By adjusting the adjustment bolt nut 34, the adjustment bracket nut 34 is engaged with the lower end of the rear link 24B. The front-rear direction position can be adjusted. Further, an engaging piece 35 protruding upward is disposed on the upper surface behind the stopper bracket 33. The engagement piece 35 is formed with an inclined front surface on the battery case C side. The engagement piece 35 returns to the standby position while the rear link 24B is tilted forward when the inspection head 2 is returned from the operating position to the standby position with the inspection head 2 closed. In combination, the inspection head 2 functions to prevent movement to the operating position.

  A through hole 20C is formed in the side clamp 20 by penetrating a portion that contacts the side surface in front of the battery case C and the seal material 20A of the portion in the front-rear direction. The through hole 20 </ b> C can communicate with an opening C <b> 2 provided on the front side of the battery case C held by the side clamp 20 in the front. Further, the through hole 20C is connected to the liquid leakage measuring device 4 via a flexible hose 41 at the rear.

  The liquid leakage measuring device 4 includes a suction pump 42 that sucks air in the battery case C through a hose 41 connected to the inspection head 2, and a volatile component of the electrolyte contained in the sucked air disposed in the suction air path. A liquid leakage detection sensor 43 to be measured. The suction pump 42 is controlled by the controller 5 so that when the inspection head 2 is engaged with the battery case C, the suction operation is started and stopped when the measurement for a predetermined time is completed. Moreover, the liquid leak detection sensor 43 measures the volatile component of the electrolyte in the suction air during the period when the suction pump 42 is operating. The measurement data obtained by the liquid leak detection sensor 43 is determined by the controller 5 as to whether or not the electrolyte has leaked, and the determination result is displayed on the display 44 and transmitted to the production control system 50.

  As the liquid leak detection sensor 43, a sensor using the principle that the conductivity changes by selectively reacting the odor component on the semiconductor surface is preferable because of high sensitivity. For example, when a flammable gas (odor component) touches the surface of a porous body, thin film, or whisker of semiconductive tin oxide or zinc oxide, it reacts with the oxygen adsorbed on these surfaces, and the Fermi level in the semiconductor A material whose conductivity is changed by changing the position can be used. In addition, it is possible to suitably use a FET in which a specific gas is selectively adsorbed on the gate portion of an FET using a silicon semiconductor.

  In the battery manufacturing apparatus configured as described above, the parallel links 24A and 24B are erected by the tension spring 25 in the standby position of the inspection head 2, and the upper clamp 21 is separated from the side clamp 20 in an open state. . When the battery case C is positioned on the inspection stage S2, the controller 5 operates the actuator 3 from the return limit position to the output limit position. When the inspection head 2 is pushed out toward the battery case C by the actuator 3, the inspection head 2 is advanced in its open state.

  When the inspection head 2 is advanced by a predetermined amount from the standby position, the side surface of the extension 24C before the base of the bent portion 24D of the rear link 24B of the parallel links 24A and 24B engages with the tip of the stopper bracket 33 ( FIG. 3). When the lower end of the rear link 24B is engaged with the tip of the stopper bracket 33, the parallel links 24A and 24B are rotated forward as the vehicle advances, and the upper clamp 21 moves forward while being lowered in a direction approaching the side clamp 20.

  When the inspection head 2 is moved to the limit engagement position by the actuator 3, as shown in FIG. 4, the side clamp 20 crushes the cushioning sealing material 20A on the lower surface and the front side surface of the battery case C. Contact. Further, the upper clamp 21 contacts the upper surface of the battery case C while crushing the cushioning sealing material 21A.

  The upper edge of the battery case C is provided with a protrusion due to the tightening portion M, but the upper clamp 21 contacts the upper surface of the battery case C while moving in parallel. Can be contacted. The upper clamp 21 and the side clamp 20 are completely clamped by the parallel links 24A and 24B. Further, the sealing material 20A, 21A between the side surface and the upper clamps 20, 21 is crushed by a certain amount against the battery case C, and a space in the battery case C communicating with the through hole 20C of the side surface clamp 20 via the opening C2 is formed. , Completely shut off from the top, bottom, left and right to ensure airtightness.

  The crushing allowance of the sealing materials 20A and 21A can be adjusted by the adjusting nut 32 and the adjusting bolt nut 34. That is, when the side clamp 20 is moved forward by the adjustment nut 32, the squeezing allowance of the sealing material 20A between the side clamp 20 and the battery case C increases, and when the side clamp 20 is retracted, the squeezing allowance decreases. Further, when the adjustment bolt nut 34 is advanced, the crushing margin of the sealing material 21A between the upper clamp 21 and the battery case C is reduced, and when the adjustment bolt nut 34 is retracted, the crushing margin is increased.

  When the inspection head 2 is engaged with the battery case C, the suction pump 42 is operated, and then the liquid leakage detection sensor 43 measures the volatile component of the electrolyte in the suction air. A flow rate adjuster may be provided between the liquid leak detection sensor 43 and the suction pump 42 so that the suction speed can be varied. Then, when the measurement for a predetermined time is completed, the suction pump 42 is stopped. With respect to the measurement data from the air leakage detection sensor 43 of the air sucked from the battery case C, the controller 5 determines whether or not the electrolyte leaks, and the determination result is displayed on the display 44 and the inspection result is produced. Send to control system 50.

  Next, the actuator 3 is operated from the limit position to the return limit position. As the inspection head 2 moves backward, the side clamp 20 moves away from the lower surface and side surface of the battery case C, and the tension spring 25 that engages the lower end of the front link 24A of the parallel links 24A and 24B moves in the contraction direction. In operation, the upper clamp 21 is lifted from the battery case C in parallel. Then, after returning to the standby position of the return limit position through the state shown in FIG. The battery case C that has been inspected is carried out from the inspection stage S2 to the buffer conveyor S3. And it waits until the next battery case C is positioned by the test | inspection stage S2.

  By the way, when the inspection head 2 is closed before approaching the battery case C, it is necessary to prevent accurate detection and to prevent damage to the battery case C and equipment. As a cause of the inspection head 2 being closed as described above, for example, the tension spring 25 may be cut by repeated expansion and contraction. When the tension spring 25 is cut, the upper clamp 21 is closed by its own weight as shown in FIG.

  When the inspection head 2 is returned to the standby position by the actuator 3 from this state, the upper clamp 21 is closed, and the parallel links 24A and 24B are retracted to the standby position while being inclined forward. Then, as shown in FIG. 6, the bent portion 24D at the lower end of the rear link 24B of the parallel links 24A, 24B gets over the inclined surface of the engagement piece 35 disposed on the rear upper surface of the stopper bracket 33 and is folded. The bent portion 24D engages with the engagement piece 35. If there is no abnormality in the clamping mechanism of the inspection head 2, the parallel links 24A and 24B return to the upright state, so that the lower end of the rear link 24B does not get over the engagement piece 35 even at the return limit of the actuator 3. .

  Due to the engagement between the bent portion 24D and the engagement piece 35, the inspection head 2 is prevented from moving to the operating position. Accordingly, since the lower end of the rear link 24B is engaged with the engagement piece 35, even when the actuator 3 is operated again to the limit limit side by a signal from the control program, it cannot be operated to the limit limit side. At this time, the controller 5 is in a state where the response of the limit detection is not returned in response to the operation command to the limit limit, and if a predetermined time set in advance by the control program is exceeded, a control time over error occurs and the equipment stops. Inform the abnormality as well. As described above, when there is an abnormality in the clamping mechanism of the inspection head 2, it is possible to prevent the influence on the accurate inspection and to prevent damage to the battery case C and the facility by stopping the facility. .

  In the present embodiment, the following effects can be achieved.

  (A) For a battery B manufacturing apparatus having a battery case C provided with an opening C2 communicating with the outside on at least a part of a side surface, and a battery B encapsulated with an electrolyte and accommodated in the battery case C To do. And the side surface clamp 20 which contact | abuts via the sealing material 20A to the side surface and lower surface containing the opening C2 of the battery case C which accommodated the battery B which enclosed the electrolyte solution is provided. Further, in accordance with the approach of the side clamp 20 to the battery case C, the parallel links 24A and 24B are connected to the side clamp 20 so as to approach the upper surface connected to the side including the opening C2 from above via the sealing material 21A. And an upper clamp 21 attached thereto. And the inspection head 2 which clamps the battery case C by the side clamp 20 and the upper clamp 21 and seals the periphery of the opening C2 of the battery case C is configured. And the liquid leak measuring apparatus 4 which suck | inhales the air in the battery case C via the opening C2 of the battery case C, and measures the volatile component of the electrolyte solution contained in the sucked air is provided. For this reason, both of the sealing materials 20A and 21A provided on the clamps 20 and 21 can be brought into contact with the contact surface of the battery case C without rubbing, and the battery B including the box-shaped battery case C is contacted. Can also be applied. Moreover, since both the sealing materials 20A and 21A are in contact with the contact surface of the battery case C without rubbing, the durability of the sealing materials 20A and 21A can be improved.

  (A) The parallel links 24 </ b> A and 24 </ b> B are provided with an extended portion 24 </ b> C further extended from the connecting portion to the side clamp 20. Then, in the middle of the movement of the side clamp 20 toward the battery case C, the extension 24C engages with the adjustment bolt nut 34 as a stopper, so that the parallel links 24A and 24B rotate from the upright state to the battery case C side. Moved. Therefore, the upper clamp 21 or the upper clamp 21 and the side clamp 20 are configured to approach the upper surface or upper and lower surfaces of the battery case C from above and below. For this reason, the pressing and clamping of the inspection head 2 can be performed in one motion, the inspection tact can be shortened, the inspection time can be increased by the shortened tact, and the detection accuracy can be improved. In addition, since the inspection head 2 can be pressed and clamped by a single actuator 3, the cost for equipment and control can be reduced. In addition, stable clamping is possible regardless of variations in the stop position of the battery B as a workpiece.

  (C) The engagement piece 35 is provided so as to protrude at a rear position on a line parallel to the moving direction of the side clamp 20 including the adjustment bolt nut 34 as a stopper that contacts the extension 24B. Then, when the parallel links 24A and 24B are returned to the standby position in a state where the parallel links 24A and 24B are rotated from the upright state to the battery case C side, the engagement pieces 35 are engaged with the distal ends of the extension portions 24C of the parallel links 24A and 24B. In combination, the side clamp 20 is fixed to the standby position. For this reason, when the clamp is closed before approaching the battery B, the facility can be stopped, the influence on the liquid leakage inspection result can be prevented, and damage to the battery B and the facility can be prevented. Can be prevented.

(Second Embodiment)
7 and 8 show a second embodiment of a battery manufacturing apparatus and manufacturing method to which the present invention is applied, and FIG. 7 shows a state of the inspection head and actuator of the liquid leakage inspection apparatus in a state where the battery is advanced by a predetermined amount from the standby position. FIG. 8 shows the state of the inspection head at the operating position. In the present embodiment, the configuration of the inspection head for the battery case having protrusions on the top and bottom is added to the first embodiment. The same devices as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.

  In FIG. 7, in the present embodiment, the battery case C is intended to be provided with protrusions by the tightening portions M on the periphery of the lid disposed on the top and bottom of the container. For this reason, it is necessary not to give the sliding (rub) external force with respect to the sealing materials 21A-23A provided in the clamps 21-23.

  For the above reason, the inspection head 2 of the present embodiment has a three-part structure of upper and lower clamps 21 and 23 that respectively clamp the upper and lower surfaces of the battery case C, and a side surface clamp 22 that contacts the side surface of the battery case C. . And similarly to the upper clamp 21, the lower clamp 23 is also provided with a configuration that comes into contact with the lower surface of the battery case C by the parallel links 26A and 26B. That is, the side clamp 22 and the lower clamp 23 are provided with extensions 22B and 23B extending rearward from the battery case C from the region in contact with the battery case C. The extensions 22B and 23B are connected to two parallel links 26A and 26B arranged in the front-rear direction and extending in the up-down direction via pins.

  Of these parallel links 26A, 26B, the front link 26A disposed in front of the battery case C side is further extended upward from the extended portion of the side surface clamp 22. A tension spring (not visible in the illustrated state) acting as an unclamp is disposed between the extended upper end and the side surface clamp 22. This tension spring urges the parallel links 26A, 26B upright in the vertical direction and separates the side surface clamp 22 and the lower clamp 23 in the vertical direction.

  Of the parallel links 26A and 26B, the rear link 26B disposed rearward from the battery case C extends further upward from the extension of the side clamp 22, and the upper end of the extension 26C is bent diagonally forward. Thus, a bent portion 26D is formed. Then, in a state where the inspection head 2 has advanced by a predetermined amount from the standby position (FIG. 7), the side surface in front of the bent portion 26D at the upper end of the extension portion 26C begins to extend forward from the mounting base of the actuator 3. The tip is engaged.

  An adjustment bolt nut 37 for adjusting the engagement position with the upper end of the rear link 26B in the front-rear direction is provided at the tip of the stopper bracket 36, and the adjustment bolt nut 37 is adjusted to engage with the upper end of the rear link 26B. The front-rear direction position can be adjusted. Other configurations are the same as those in the first embodiment.

  In the battery B manufacturing apparatus of the present embodiment having the above configuration, the upper and lower clamps 21 and 23 are supported by the side clamp 22 via the parallel links 24A, 24B, 26A, and 26B. And in the stand-by position, it is hold | maintained in the position spaced apart from the side surface clamp 22 up and down via the parallel links 24A, 24B, 26A, and 26B. Then, when the inspection head 2 is moved to the operating position that engages the battery case C, the parallel links 24A, 24B, 26A, and 26B are inclined forward. Thereby, it act | operates so that the side surface clamp 22 may approach from upper and lower surfaces, and operates so that the upper and lower surfaces of battery case C may be pinched | interposed from both upper and lower surfaces. For this reason, even if the upper and lower surfaces of the battery case C have irregularities due to protrusions and depressions, it can be clamped from above and below without rubbing the irregular surfaces.

  In the present embodiment, in addition to the effects (a) to (c) in the first embodiment, the following effects can be achieved.

  (D) A battery B manufacturing apparatus having a battery case C provided with an opening C2 communicating with the outside on at least a part of a side surface, and a battery B encapsulating an electrolytic solution and accommodated in the battery case C. To do. And the side surface clamp 22 which contact | abuts via the sealing material 22A to the side surface containing the opening C2 of the battery case C which accommodated the battery B which enclosed the electrolyte solution is provided. Further, in accordance with the approach of the side clamp 22 to the battery case C, the top and bottom surfaces connected to the side including the opening C2 are respectively parallel to the side clamp 22 so as to approach from the top and bottom via the sealing materials 21A and 23A. Upper and lower clamps 21 and 23 are provided via links 24A to B and 26A to B, respectively. And the inspection head 2 which clamps the battery case C by the side clamp 22 and the upper clamp 21 and seals around the opening C2 of the battery case C is configured. And the liquid leak measuring apparatus 4 which suck | inhales the air in the battery case C via the opening C2 of the battery case C, and measures the volatile component of the electrolyte solution contained in the sucked air is provided. For this reason, all of the sealing materials 21A to 23A provided on the clamps 21 to 23 contact the battery B with no contact with the contact surface of the battery case C even when the battery case C has an uneven surface. The present invention can also be applied to a battery B including a box-shaped battery case C. Moreover, since all of the sealing materials 21A to 23A are in contact with the contact surface of the battery case C without rubbing, the durability of the sealing materials 21A to 23A can be improved.

B Battery C Battery Case C2 Opening P Battery Pack 1 Liquid Leakage Inspection Device 2 Inspection Head 3 Actuator 4 Liquid Leakage Measurement Device 5 Controller 20, 22 Side Clamp 20A-23A Seal Material 21 Upper Clamp 23 Lower Clamp 24A, 24B, 26A, 26B Parallel link 24C, 26C Extension 25 Tension spring 34 Adjustment bolt nut 35 as a stopper 35 Engagement piece

Claims (8)

A battery manufacturing apparatus comprising: a battery case having an opening communicating with the outside on at least a part of a side surface; and a battery encapsulating an electrolytic solution and housed in the battery case,
A side clamp contacting the side and bottom surfaces including the opening of the battery case containing the battery enclosing the electrolyte solution via a sealing material, and a side clamp connected to the side including the opening according to the approach of the side clamp to the battery case. An upper clamp attached via a parallel link to a side clamp so as to approach the upper surface from above via a sealing material, and a test head that clamps the battery case and seals around the opening of the battery case;
A battery manufacturing apparatus comprising: a liquid leakage measuring device that sucks air in a battery case through an opening of the battery case and measures a volatile component of an electrolyte contained in the sucked air. A battery manufacturing apparatus comprising: a battery case having an opening communicating with the outside on at least a part of a side surface; and a battery encapsulating an electrolytic solution and housed in the battery case,
Side clamps that contact a side surface including an opening of a battery case containing a battery enclosing the electrolyte solution via a sealing material, and upper and lower surfaces connected to the side surface including the opening according to the approach of the side clamp to the battery case An upper and lower clamp attached to each of the side clamps via parallel links so as to approach each other via a sealing material, and an inspection head for clamping the battery case and sealing around the opening of the battery case,
A battery manufacturing apparatus comprising: a liquid leakage measuring device that sucks air in a battery case through an opening of the battery case and measures a volatile component of an electrolyte contained in the sucked air. The parallel link comprises an extension further extending from the connection to the side clamp;
In the middle of the movement of the side clamp to the battery case, the extension part engages with the stopper, so that the parallel link is rotated from the upright state to the battery case side, and the upper clamp or the upper clamp and the side clamp are moved. The battery manufacturing apparatus according to claim 1, wherein the battery manufacturing apparatus is configured to approach the upper surface or the upper and lower surfaces of the battery case from above and below. Including a stopper that abuts on the extension portion, the engagement piece protrudes at a rear position on a line parallel to the moving direction of the side clamp,
When the parallel link is returned to the standby position while the parallel link is rotated from the upright state to the battery case side, the engagement piece engages with the tip of the extension portion of the parallel link and fixes the side clamp at the standby position. The battery manufacturing apparatus according to claim 3. A battery manufacturing method comprising: a battery case having an opening communicating with the outside on at least a part of a side surface; and a battery encapsulating an electrolyte and housed in the battery case,
A side clamp contacting the side and bottom surfaces including the opening of the battery case containing the battery enclosing the electrolyte solution via a sealing material, and a side clamp connected to the side including the opening according to the approach of the side clamp to the battery case. An upper clamp attached to the upper surface via a parallel link to a side clamp so as to approach from above via a sealing material, and a sealing step of clamping the battery case and sealing around the opening of the battery case;
A liquid leakage measuring step of sucking air in the battery case via the opening of the battery case and measuring a volatile component of the electrolyte contained in the sucked air. A battery manufacturing method comprising: a battery case having an opening communicating with the outside on at least a part of a side surface; and a battery encapsulating an electrolyte and housed in the battery case,
Side clamps that contact a side surface including an opening of a battery case containing a battery enclosing the electrolyte solution via a sealing material, and upper and lower surfaces connected to the side surface including the opening according to the approach of the side clamp to the battery case A sealing step of clamping the battery case by sealing the battery case with the upper and lower clamps attached via the parallel links to the side clamps so as to approach each other through the sealing material from above and below. When,
A liquid leakage measuring step of sucking air in the battery case via the opening of the battery case and measuring a volatile component of the electrolyte contained in the sucked air. A battery inspection method comprising: a battery case having an opening communicating with the outside on at least a part of a side surface; and a battery encapsulating an electrolyte and housed in the battery case,
A side clamp contacting the side and bottom surfaces including the opening of the battery case containing the battery enclosing the electrolyte solution via a sealing material, and a side clamp connected to the side including the opening according to the approach of the side clamp to the battery case. An upper clamp attached to the upper surface via a parallel link to a side clamp so as to approach from above via a sealing material, and a sealing step of clamping the battery case and sealing around the opening of the battery case;
A method for inspecting a battery, comprising: a step of sucking air in the battery case via the opening of the battery case and measuring a volatile component of the electrolyte contained in the sucked air. A battery inspection method comprising: a battery case having an opening communicating with the outside on at least a part of a side surface; and a battery encapsulating an electrolyte and housed in the battery case,
Side clamps that contact a side surface including an opening of a battery case containing a battery enclosing the electrolyte solution via a sealing material, and upper and lower surfaces connected to the side surface including the opening according to the approach of the side clamp to the battery case A sealing step of clamping the battery case by sealing the battery case with the upper and lower clamps attached via the parallel links to the side clamps so as to approach each other through the sealing material from above and below. When,
A method for inspecting a battery, comprising: a step of sucking air in the battery case via the opening of the battery case and measuring a volatile component of the electrolyte contained in the sucked air.

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