JP3882212B2 - Battery electrolyte supply method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery electrolyte supply method and apparatus for supplying an electrolyte solution to a battery can containing an electrode plate group in which a positive electrode plate and a negative electrode plate are wound with a separator interposed therebetween.
[0002]
[Prior art]
In general, in a battery assembly process, an electrode plate group in which a positive electrode plate and a negative electrode plate are wound around a separator is stored in a battery can, and then an operation of pouring an electrolyte into the battery can is performed. Yes.
[0003]
In order to efficiently perform this type of liquid injection work, various methods have been conventionally proposed. For example, a method of covering a battery can with a cap, discharging the air in the battery can through a cap by means of a vacuum pump to reduce the pressure, and injecting an electrolyte into the battery can (Japanese Patent Laid-Open No. 61-171061) Or a method of returning the pressure to normal pressure after injecting the electrolyte into the battery can (see Japanese Patent Laid-open No. Hei 4-184861), or a group of electrodes in the battery can or resin case A method is known in which a centrifugal force is applied to the electrolytic solution in a funnel-shaped injection tube whose injection port is closed by the upper part to inject the electrode group (see Japanese Patent Publication No. 2-22983).
[0004]
[Problems to be solved by the invention]
By the way, in this type of battery, the permeability of the electrolyte varies greatly depending on changes in battery components, for example, the winding hardness of the electrode plate group and the material of the separator. For this reason, when the above-mentioned conventional technology is incorporated into a mass production facility for batteries, every time the specifications of the battery are changed, it is necessary to remodel the entire facility or remanufacture the facility, resulting in a considerable increase in facility costs. It has been pointed out.
[0005]
The present invention solves this type of problem, and can easily and economically handle batteries having different specifications, and can perform electrolytic injection of the electrolyte efficiently. An object is to provide a liquid supply method and apparatus.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention is arranged such that an arbitrary number of battery cans are arranged in the first to Nth electrolyte supply stations, respectively , and the pressure reduction booth and the pressure increase / decrease booth are depressurized. The liquid is supplied to perform the electrolyte injection operation. When there is a need for a change in electrolyte permeability due to an improvement in battery performance or a cycle-up of the electrolyte injection process, a plurality of corresponding ones corresponding to the first to Nth electrolyte supply stations are provided. The number of battery cans in each column arranged in the column is increased or decreased or increased or decreased in units of columns. Thereby, it is not necessary to modify the whole apparatus, and it can respond easily and economically.
It is preferable that the degree of decompression in the pressurization booth is set higher than the degree of decompression in the decompression booth. Specifically, it is preferable that the degree of decompression in the decompression booth is set to 0 to −500 mmHg, and the degree of decompression in the pressurization and decompression booth is set to 0 to −800 mmHg. In addition, after supplying the electrolytic solution to the battery can, the inside of the pressure increase / decrease booth can be pressurized.
[0007]
Further, by providing counting means for counting battery cans and stopper means for engaging with the battery cans, it becomes possible to reliably arrange a predetermined number of battery cans at the first to Nth electrolyte supply stations. .
[0008]
Furthermore, the first to Nth electrolyte supply stations respectively supply a predetermined amount of electrolyte to the first to Nth battery can transport mechanisms for arranging a predetermined number of battery cans in a plurality of rows and to the battery cans. By providing the first to Nth liquid injection mechanisms, the electrolytic solution can be supplied to a large number of battery cans more rapidly.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a schematic plan view of an electrolytic solution supply apparatus 10 according to the first embodiment of the present invention, and FIG. 2 shows a schematic front view of the electrolytic solution supply apparatus 10. As shown in FIG. 3, the battery 12 into which the electrolytic solution is injected by the electrolytic solution supply apparatus 10 has a bottomed cylindrical battery can 14. The battery can 14 includes a positive electrode plate and a negative electrode plate. The electrode plate group 16 wound around the separator is inserted through the insulating plate 18. The battery can 14 is transported while being inserted into a hole 22 provided in the carrier 20.
[0010]
As shown in FIGS. 1 and 2, the electrolytic solution supply apparatus 10 includes first to fourth (N) electrolytic solution supply stations 24a to 24d that are set in parallel to each other, and the first electrolytic solution supply. The battery cans 14 are sequentially transported from the station 24a to the fourth electrolyte supply station 24d, and any number of the battery cans 14 can be arranged corresponding to the first to fourth electrolyte supply stations 24a to 24d. A predetermined amount of electrolyte is supplied to each of the battery cans 14 arranged in a plurality of rows (four rows) corresponding to the battery can transport mechanism 26 and the first to fourth electrolyte supply stations 24a to 24d. And a liquid injection mechanism 28.
[0011]
The battery can transport mechanism 26 intersects the introduction conveyor 30 for carrying the battery can 14 in the arrow Y direction and the arrow Y direction corresponding to the first to fourth electrolyte supply stations 24a to 24d. The first to fourth transport conveyors 32a to 32d, each of which can arrange an arbitrary number (up to 10) of battery cans 14 in the direction of the arrow X, are connected to the end portions of the first to fourth transport conveyors 32a to 32d. 1st thru | or 3rd turning conveyor 34a-34c and the derivation | leading-out conveyor 36 connected with the edge part of the said 4th conveyance conveyor 32d are provided.
[0012]
The introduction conveyor 30, the first to fourth transport conveyors 32a to 32d, the first to third swirl conveyors 34a to 34c, and the lead-out conveyor 36 constitute a battery can transport path that snakes along the arrow Y direction. A pair of conveyance guides 37 is disposed on both sides of the battery can conveyance path with a slight gap between the carrier 20 and the carrier 20.
[0013]
In the first to fourth conveyors 32a to 32d, in order to count the number of battery cans 14 to be respectively conveyed, photoelectric sensors 38 and 40 are arranged in the vicinity of both end portions so as to be adjustable in position. The In order to regulate the number of battery cans 14 in the vicinity of the battery can outlets of the first to fourth transfer conveyors 32a to 32d, a stopper (stopper means) 42 that can be engaged with the battery cans 14 is movable forward and backward. The position is freely adjustable. The photoelectric sensors 38 and 40 and the stopper 42 are screwed on a rail (not shown) so that the position can be adjusted in the arrow X direction.
[0014]
The liquid injection mechanism 28 includes liquid injection means 44 and a liquid injection booth 46 that are arranged corresponding to the first to fourth electrolyte supply stations 24a to 24d. The liquid injection means 44 includes a biaxial robot 48 that can advance and retreat in the directions of arrows X and Z, and metering pumps 52a to 52d are attached to an arm 50 extending from the biaxial robot 48 in the direction of arrow Y. The metering pumps 52a to 52d communicate with the liquid tank 56 in which the electrolytic solution is stored via the pipelines 54a to 54d.
[0015]
The liquid injection booth 46 is fitted into a base 58 on which the battery can transport mechanism 26 is placed, and a groove 60 formed in the upper part of the base 58 by being lifted and lowered by a lifting means (not shown). The pressurizing / pressurizing booth 62 capable of storing all the battery cans 14 arranged on the conveyors 32a to 32d and the rod 66 extending upward from the cylinder 64 fixed to the side of the pressurizing / pressurizing booth 62 are fixed and lifted. A free decompression booth 68 is provided.
[0016]
A plurality of funnel-shaped injection cups 70 are disposed on the top of the pressurizing / depressurizing booth 62. The injection cups 70 are spaced from each other in the direction of the arrow X corresponding to the distance between the centers of the carriers 20, while being spaced apart from the first to fourth transport conveyors 32 a to 32 d in the direction of the arrow Y. In actuality, 40 batteries are arranged corresponding to the number of battery cans 14 in four rows in 10 rows. As shown in FIG. 2, the lower portion of each injection cup 70 communicates with an injection nozzle 74 via a valve 72.
[0017]
As shown in FIG. 4, the decompression booth 68 communicates with a vacuum pump 78 (which can be set in a range of 0 to −500 mmHg), which is a source of decompression, via a conduit 76. A decompression switching valve 80 for adjusting the degree of decompression in the decompression booth 68, a surge tank 82 for stabilizing the degree of decompression, and a tank pressure adjusting valve 84 are sequentially provided.
[0018]
The pressurizing / depressurizing booth 62 includes a vacuum pump 90 (which can be set in a range of 0 to −800 mmHg) and a compressor 92 (0 to 5 kg / cm) which is a pressurizing source via pipes 86 and 88, respectively. Can be set within the range of ² ). A decompression switching valve 94, a surge tank 96 for stabilizing the degree of decompression, and a tank pressure adjustment valve 98 are sequentially disposed in the pipe line 86. A pressure switch valve 100, a surge tank 102 for stabilizing the degree of pressurization, and a tank pressure adjustment valve 104 are sequentially disposed in the pipe line 88. In addition, a dryer (not shown) is connected to the pipe line 88 as needed.
[0019]
An operation of the electrolytic solution supply apparatus 10 according to the first embodiment configured as described above will be described.
[0020]
A buffer (not shown) is installed upstream of the introduction conveyor 30 constituting the battery can transport mechanism 26, and the battery cans 14 accommodated in the carrier 20 are in the buffer for the number of batches (for example, 10). It has been stocked. Further, the positions of the photoelectric sensors 38 and 40 and the positions of the stoppers 42 are adjusted according to the number of battery cans 14 arranged in each row.
[0021]
Therefore, first, a predetermined amount of the electrolyte in the liquid tank 56 is injected into each injection cup 70 via the metering pumps 52a to 52d constituting the liquid injection means 44 (see FIG. 5). When the injection to the injection cup 70 arranged at the left end is completed, the metering pumps 52a to 52d once rise under the action of the biaxial robot 48, and then in the direction indicated by the arrow X by the arrangement interval of the injection cup 70. Move and descend. This is to prevent interference between the metering pumps 52 a to 52 d and the injection cup 70.
[0022]
As described above, the metering pumps 52a to 52d are sequentially moved toward the right side, the electrolyte solution is injected into the injection cup 70 by a predetermined amount, and the injection operation of the electrolyte solution to all the injection cups 70 is completed. At that time, the valve 72 connected to each injection cup 70 is closed.
[0023]
Next, the metering pumps 52a to 52d are retracted to the left, and the cylinder 64 is driven to lower the decompression booth 68. The decompression booth 68 is in close contact with the upper portion of the pressure boosting booth 62 (see FIG. 6). Here, the depressurization switching valve 80 is switched to the depressurization side, and the vacuum pump 78 maintains the depressurization booth 68 and the injection cup 70 in a depressurized state within a range of about −200 to −450 mmHg.
[0024]
On the other hand, when the battery can 14 accommodated in the carrier 20 is transferred from the introduction conveyor 30 constituting the battery can transport mechanism 26 to the first transport conveyor 32a, the battery can 14 is provided near the inlet side of the first transport conveyor 32a. The photoelectric sensor 38 is started to count the battery can 14. The battery cans 14 transported along the first transport conveyor 32a reach the second transport conveyor 32b from the first swivel conveyor 34a, and further connect the second swivel conveyor 34b, the third transport conveyor 32c, and the third swivel conveyor 34c. Then, it is transferred to the fourth conveyor 32d.
[0025]
When each stopper 42 is engaged with a predetermined battery can 14, when the specified number of battery cans 14 are arranged on the first to fourth transport conveyors 32a to 32d, the battery can transport mechanism 26 is driven. Stopped. Specifically, ten battery cans 14 are arranged in four rows on the first to fourth conveyors 32a to 32d, respectively, oriented in the arrow X direction and parallel to each other in the arrow Y direction.
[0026]
Next, while the inside of the decompression booth 68 is maintained in the decompressed state as described above, the pressure boosting booth 62 and the decompression booth 68 are integrally lowered by lifting means (not shown). As a result, the lower end portion of the pressurizing / depressurizing booth 62 is fitted and adhered to the groove portion 60 of the base 58 (see FIG. 7). Further, the pressure reducing switching valve 94 is switched to the pressure reducing side, and the pressure reducing booth 62 is within a range of about −250 to −500 mmHg via the vacuum pump 90 and is higher than the pressure reducing booth 68 (that is, a low pressure). The pressure is reduced to
[0027]
Thereafter, when each valve 72 is opened, the electrolytic solution in each injection cup 70 is gradually injected into each battery can 14 from the injection nozzle 74 due to the difference in pressure between the decompression booth 68 and the pressure increase / decrease booth 62. When the injection of the electrolytic solution is completed, the pressure reducing switching valves 80 and 94 are switched to the atmosphere opening side, and the inside of the pressure reducing booth 68 and the pressure increasing / decreasing booth 62 is gradually returned to the atmospheric pressure, and then the valve 72 is closed.
[0028]
Therefore, the pressurization switching valve 100 is switched to the pressurization side, and the inside of the pressurizing / depressurizing booth 62 is pressurized within the range of 3 to 5 kg / cm ² . When a certain period of time has passed and the electrolyte injected into the battery can 14 has sufficiently penetrated into the electrode plate group 16 and the level of the electrolyte has dropped, the pressure switching valve 100 is opened to the atmosphere. The inside of the pressurization / decompression booth 62 is gradually returned to the atmospheric pressure.
[0029]
Next, the lifting / lowering means (not shown) and the cylinder 64 are driven, and the pressure increasing / decreasing booth 62 and the pressure reducing booth 68 are lifted and wait at the initial positions, and then each stopper 42 is retracted from the battery can 14. Then, the battery can transport mechanism 26 is driven, and a predetermined number of battery cans 14 after the completion of liquid injection are discharged from the outlet conveyor 36, while a predetermined number of battery cans 14 before liquid injection are carried in from the introduction conveyor 30. The
[0030]
Next, the case where 6 cc of the electrolyte is injected into the battery can 14 using the battery can 14 having an outer diameter of φ18 mm and a height of 65 mm will be described in detail. In addition, in the case of the battery of this embodiment, the penetration of the electrolytic solution is relatively slow, and the process specification has a capacity of 20 seconds / piece. Also, the amount of electrolyte injected at the first and second electrolyte supply stations 24a and 24b is 2 cc, the amount of electrolyte injected at the third and fourth electrolyte supply stations 24c and 24d is 1 cc, Assume that the battery can 14 is batch-processed in units of ten. FIG. 8 shows a time chart in the divided injection operation of the electrolytic solution.
[0031]
First, 2 cc of the electrolyte is injected into the injection cup 70 corresponding to the first and second electrolyte supply stations 24a and 24b by the metering pumps 52a and 52b, and the third and fourth electrolytes are measured by the metering pumps 52c and 52d. 1 cc of electrolyte is injected into the injection cup 70 corresponding to the supply stations 24c and 24d. The decompression booth 68 is brought into close contact with the pressurization / decompression booth 62, and the decompression booth 68 and the inside of the injection cup 70 are decompressed by the vacuum pump 78. Thereby, the weighing operation is performed.
[0032]
On the other hand, as shown in FIG. 1, the battery can 14 disposed on the first transport conveyor 32a is supplied with the electrolyte solution for the first time and is disposed on the second transport conveyor 32b. 14 is supplied with a second electrolyte solution. Further, the third and fourth electrolytes are supplied into the battery cans 14 disposed on the third and fourth conveyors 32c and 32d.
[0033]
Accordingly, in parallel with the weighing operation, ten battery cans 14 before liquid injection are transported from the introduction conveyor 30 to the first transport conveyor 32a. For this reason, the battery can 14 supplied with the first electrolyte is disposed on the second conveyor 32b, the battery can 14 supplied with the second electrolyte is disposed on the third conveyor 32c, and the second 4 When the battery cans 14 supplied with the electrolyte solution for the third time are arranged on the conveyer 32d and the number of the respective battery cans 14 becomes 10, each stopper 42 advances and the battery can transport mechanism 26 Driving is stopped.
[0034]
Further, in the state where the decompression booth 68 and the pressurization / decompression booth 62 are integrally lowered and engaged with the base 58, the inside of the pressurization / decompression booth 62 is decompressed, and each valve 72 is opened to supply the first to fourth electrolyte solutions. The first to fourth electrolyte injection operations to the battery cans 14 at the stations 24a to 24d are started. After the liquid injection operation is completed, the inside of the pressurization / decompression booth 62 is returned to atmospheric pressure, and then the valve 72 is closed and the inside of the pressurization / decompression booth 62 is pressurized. Then, when the liquid level in the battery can 14 is lowered, the inside of the pressurization / decompression booth 62 is returned to the atmospheric pressure, and the pressurization / decompression booth 62 and the decompression booth 68 are raised and retracted to the initial position.
[0035]
As described above, after the electrolytic solution penetration operation is completed, each stopper 42 is retracted, and the first to fourth transport conveyors 32a to 32d and the first to third swirling conveyors 34a to 34c are driven, and the introduction conveyor 30 is driven. A predetermined number of battery cans 14 before liquid injection are transported to the first transport conveyor 32a through the first transport conveyor 32a, while the battery can 14 to which the electrolyte solution for the first time is supplied by the first transport conveyor 32a is transported second. The battery can 14 transferred to the conveyor 32b and supplied with the second electrolyte solution by the second conveyor 32b is transferred to the third conveyor 32c, and the third electrolyte solution is transferred to the third conveyor 32c. The supplied battery can 14 is transported to the fourth transport conveyor 32d, and further, the battery can 14 to which the electrolyte solution for the fourth time is supplied by the fourth transport conveyor 32d is led out from the lead-out conveyor 36. That.
[0036]
In this manner, ten battery cans 14 are sequentially conveyed to the first to fourth electrolyte supply stations 24a to 24d, respectively, and the divided injection operation of the electrolyte is performed. As a result, the operation of injecting the electrolyte into the battery can 14 is completed.
[0037]
In this case, in the first embodiment, the first to fourth transport conveyors that extend in the direction of the arrow X to the first to fourth electrolyte supply stations 24a to 24d and can each be arranged with a plurality of battery cans 14 respectively. 32a to 32d are installed. For this reason, the number of battery cans 14 disposed on the first to fourth transport conveyors 32a to 32d is increased or decreased when a need for a change in electrolyte permeability or an improvement in electrolyte injection capacity arises. Alternatively, it is possible to easily cope with this by increasing or decreasing the number of the first to fourth conveyors 32a to 32d themselves. This eliminates the need for extensive remodeling and remanufacturing of the entire electrolyte supply device 10 and has an effect that it can be easily and economically handled.
[0038]
At that time, photoelectric sensors 38 and 40 for detecting the number of battery cans 14 and stoppers 42 for restricting the movement of the battery cans 14 can be adjusted in position on the first to fourth transfer conveyors 32a to 32d. Is provided. For this reason, a desired number of battery cans 14 can be arranged with high precision on the first to fourth conveyors 32a to 32d, and the efficiency of the liquid injection work can be easily achieved.
[0039]
Next, an electrolytic solution supply apparatus 110 according to a second embodiment of the present invention is shown in FIG. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
[0040]
The electrolyte supply device 110 has a structure in which four electrolyte supply devices 10 according to the first embodiment are connected, and the first to fourth electrolyte supply stations 24a to 24d include first to fourth electrolyte supply stations 24a to 24d. Fourth battery can transport mechanisms 112a to 112d and first to fourth liquid injection mechanisms 114a to 114d are provided.
[0041]
In the second embodiment, 5.5 cc of the electrolyte is injected into the battery can 14 having an outer diameter of φ18 mm and a height of 65 mm, and is applied when the penetration of the electrolyte is relatively fast. Is done. As the process specification, it has a capability of 2 seconds / piece, and its time chart is shown in FIG.
[0042]
In the electrolytic solution supply device 110, the first and second electrolytic solution supply stations 24a and 24b are configured to supply 2 cc into each of the 40 battery cans 14 by the metering pumps 52a to 52d constituting the first and second liquid injection mechanisms 114a and 114b. 1 cc of electrolyte is injected at the third electrolyte supply station 24c via the third injection mechanism 114c, and further at the fourth electrolyte supply station 24d via the fourth injection mechanism 114d. 0.5 cc of electrolyte is injected. Accordingly, the battery can 14 is batch-processed in units of 40.
[0043]
In the electrolytic solution supply apparatus 110, first, at the first electrolytic solution supply station 24a, 2 cc of the electrolytic solution is injected into each injection cup 70 by the metering pumps 52a to 52d constituting the first injection mechanism 114a. The electrolytic solution is poured from the injection cup 70 into 40 battery cans 14 arranged in four rows along the first battery can transport mechanism 112a.
[0044]
After the permeation of the electrolyte in the first electrolyte supply station 24a is completed, the 40 battery cans 14 arranged in the first electrolyte supply station 24a are sent out to the second electrolyte supply station 24b, and the 40 battery cans 14 before injection are arranged in the first electrolyte supply station 24a. Then, the second electrolyte supply station 24b supplies the second (about 2 cc) electrolyte, and the first electrolyte supply station 24a supplies the first (about 2 cc) electrolyte. Further, the 40 battery cans 14 to which the electrolyte solution for the second time has been supplied are conveyed to the third electrolyte solution supply station 24c.
[0045]
In this way, 40 battery cans 14 are sequentially conveyed from the first electrolyte supply station 24a toward the fourth electrolyte supply station 24d, and the electrolytes are 2 cc, 2 cc, 1 cc, 0. By disassembling and injecting 5 cc into 4 times in total, the operation of injecting electrolyte into the battery can 14 is completed. In this case, in the second embodiment, the efficiency of the electrolyte supply process can be improved without modifying the entire equipment by connecting the four electrolyte supply devices 10 according to the first embodiment as a unit. There is an effect that improvement can be easily achieved.
[0046]
Note that when the permeation rate of the electrolytic solution is slow, the number of the first to fourth electrolytic solution supply stations 24a to 24d is increased, or the amount of injection in the latter half, that is, the third and fourth electrolytic solution supply stations 24c. It is possible to easily cope with the problem by reducing the amount of liquid injection at 24d or setting the number of batch processes so that a sufficient pressure permeation time can be obtained.
[0047]
Moreover, you may comprise so that the battery can 14 may be conveyed directly, without using the carrier 20, and the battery can conveyance mechanism 26 can employ | adopt intermittent transfer structures, such as a saddle feed, instead of a conveyor structure. Further, metering pumps 52a to 52d are provided corresponding to the number of first to fourth electrolyte supply stations 24a to 24d, but instead of the biaxial robot 48, three of the X axis, the Y axis, and the Z axis are provided. If a three-dimensional robot movable in the axial direction is used, the number of the metering pumps 52a to 52d can be reduced.
[0048]
Furthermore, when the dimensions of the battery can 14 are changed, the inner diameter and the depth of the hole 22 of the carrier 20 having the same outer diameter are set according to the battery cans 14 having different dimensions. Thereby, it becomes possible to make the height of each battery can 14 the same in the state inserted in the carrier 20, and to respond easily to the battery can 14 of various dimensions by the same electrolyte supply device 10. Can do.
[0049]
【The invention's effect】
As described above, in the battery electrolyte supply method and apparatus according to the present invention, an arbitrary number of battery cans can be arranged in the first to Nth electrolyte supply stations, respectively, to change various specifications. Accordingly, by increasing or decreasing the number of battery cans in each row, or by increasing or decreasing in units of rows, it is possible to easily and economically deal with without modifying the entire apparatus.
[0050]
Further, by providing the counting means and the stopper means, it is possible to reliably arrange a predetermined number of battery cans at the first to Nth electrolyte supply stations. Furthermore, by configuring the first to Nth electrolyte supply stations including the first to Nth battery can transport mechanisms and the first to Nth liquid injection mechanisms, the electrolyte can be further applied to a large number of battery cans. It becomes possible to supply quickly and efficiently.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of an electrolytic solution supply apparatus according to a first embodiment of the present invention.
FIG. 2 is a schematic side view of the electrolytic solution supply apparatus.
FIG. 3 is a partial cross-sectional perspective view of a battery can and a carrier into which an electrolytic solution is injected by the electrolytic solution supply apparatus.
FIG. 4 is a side explanatory view of a pressure increasing / decreasing mechanism of the electrolytic solution supply apparatus.
FIG. 5 is an explanatory diagram when the injection of the electrolytic solution is started by the liquid injection means.
FIG. 6 is an explanatory view showing a state where a decompression booth is in close contact with the pressurization / decompression booth after the liquid injection.
FIG. 7 is an explanatory diagram showing a state in which the pressurization / decompression booth and the decompression booth are arranged on a base.
FIG. 8 is a time chart of an electrolytic solution supply operation in the electrolytic solution supply apparatus.
FIG. 9 is an explanatory plan view of an electrolytic solution supply apparatus according to a second embodiment in which four electrolytic solution supply apparatuses are arranged side by side.
10 is a time chart of an electrolytic solution supply operation in the other electrolytic solution supply apparatus shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Electrolyte supply apparatus 12 ... Battery 14 ... Battery can 24a-24d ... Electrolyte supply station 26 ... Battery can conveyance mechanism 28 ... Injection mechanism 32a-32d ... Conveyor 34a-34c ... Swivel conveyor 38, 40 ... Photoelectric sensor 42 ... Stopper 44 ... Injection means 46 ... Injection booths 52a-52d ... Metering pump 62 ... Pressurization / decompression booth 68 ... Decompression booth 70 ... Injection cup 110 ... Electrolyte supply device 112a-112d ... Battery can transport mechanism 114a-114d ... Injection mechanism

Claims (9)

A battery electrolyte supply method for supplying an electrolyte solution to a battery can containing an electrode plate group in which a positive electrode plate and a negative electrode plate are wound with a separator interposed therebetween,
A step of sequentially transporting the battery cans along a transport path and disposing any number of the battery cans in first to Nth (plurality) electrolyte supply stations set in parallel to each other;
After injecting a predetermined amount of electrolyte into the injection cups arranged corresponding to any number of the battery cans arranged at the first to Nth electrolyte supply stations, Moving the decompression booth, closely contacting the pressurization booth for accommodating the battery can, and depressurizing the decompression booth;
With the inside of the decompression booth kept under reduced pressure, the process of decompressing the inside of the pressure boosting booth by moving integrally with the decompression booth until the pressure boosting booth is in close contact with the base on which the battery can is disposed;
Supplying an electrolytic solution to the battery can by switching and controlling a valve connected to the liquid injection cup ;
A battery electrolyte supply method comprising: 2. The electrolytic solution supply method according to claim 1, wherein in the step of depressurizing the inside of the pressure boosting booth, the degree of decompression in the pressure boosting booth is higher than that in the pressure boosting booth. Liquid supply method. 3. The electrolytic solution supply method according to claim 1, wherein the battery can is sequentially transported from the first electrolytic solution supply station to the Nth electrolytic solution supply station, and the battery is transferred from the first to Nth electrolytic solution supply stations. An electrolytic solution supply method for a battery, characterized in that an electrolytic solution is dividedly supplied to a can by a predetermined amount. 4. The battery supply method according to claim 1, further comprising a step of pressurizing the inside of the pressurization / decompression booth after the step of supplying the battery solution to the battery can. 5. Electrolyte supply method. A battery electrolyte supply device for supplying an electrolyte solution to a battery can containing an electrode plate group in which a positive electrode plate and a negative electrode plate are wound with a separator interposed therebetween,
First to Nth (plurality) electrolyte supply stations set in a plurality of rows in parallel with each other;
The battery cans are sequentially transferred from the first electrolyte supply station to the Nth electrolyte supply station, and any number of battery cans can be arranged corresponding to the first to Nth electrolyte supply stations. A battery can transport mechanism;
A predetermined amount of electrolyte is injected into an injection cup arranged corresponding to the battery can, and a valve connected to the injection cup is controlled to switch to the first to Nth electrolyte supply stations. Correspondingly, a liquid injection mechanism that supplies a predetermined amount of electrolyte solution to each arbitrary number of battery cans arranged in a plurality of rows,
A first depressurization mechanism that depressurizes the depressurization booth when the depressurization booth moves relative to the injection cup, and the depressurization booth is in close contact with the pressurization / decompression booth for housing the battery can;
In a state where the inside of the decompression booth is held under reduced pressure, the inside of the pressure boosting booth is decompressed when moving integrally with the decompression booth until the pressure boosting booth is in close contact with the base on which the battery can is disposed. 2 decompression mechanisms;
A battery electrolyte supply device comprising: 6. The electrolytic solution supply apparatus according to claim 5, wherein the first decompression mechanism can set the degree of decompression in the decompression booth to 0 to −500 mmHg, and the second decompression mechanism comprises the inside of the pressurization / decompression booth. The degree of decompression of the battery can be set to 0 to -800 mmHg. Feeding device. The electrolyte supply device according to claim 5 or 6 , wherein the battery can transport mechanism includes a counting unit that counts the battery cans transported to the first to Nth electrolyte supply stations.
Stopper means that is freely engageable with the battery cans to restrict the battery cans conveyed to the first to Nth electrolyte supply stations to a predetermined number;
A battery electrolyte supply device comprising: The electrolyte solution supply apparatus according to any one of claims 5 to 7 , wherein the first to Nth electrolyte solution supply stations respectively carry first to Nth battery cans that arrange a predetermined number of battery cans in a plurality of rows. Mechanism,
First to Nth liquid injection mechanisms for supplying a predetermined amount of electrolyte to the battery cans sequentially arranged in a plurality of rows by the first to Nth battery can transport mechanisms,
A battery electrolyte supply device comprising: 9. The electrolytic solution supply apparatus according to claim 5, further comprising a pressurizing mechanism that pressurizes the inside of the pressurization / decompression booth.

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