TWI672824B - Electrolyte injection method of a dye-sensitized cell - Google Patents

Abstract

The invention provides an electrolyte infusion method for a dye-sensitized battery. In the electrolyte infusion method, a dye-sensitized battery module is first provided, wherein the dye-sensitized battery module includes at least one electrolyte tank. Next, the target electrode (eg, the counter electrode) is drilled to form a plurality of holes for the electrolyte bath, the holes including the first hole and the second hole. Then, the dye-sensitized battery module and the electrolyte infusion module are tilted by a perfusion angle. Next, the gas is injected from the second hole using the suction head of the electrolyte infusion module. Then, the electrolyte is poured into the electrolyte tank from the first hole by the filling head of the electrolyte infusion module.

Description

Electrolyte infusion method for dye-sensitized battery

The present invention relates to an electrolyte infusion method for a dye-sensitized battery, and more particularly to an electrolyte infusion method for an automated dye-sensitized battery.

In recent years, with the rise of environmental awareness, the importance of solar cells has gradually increased in the field of green electric energy. Among them, dye-sensitized batteries have advantages such as low cost, relatively simple process and good opacity. In many fields. In general, the process of the dye-sensitized battery includes steps of manufacturing, encapsulating, and electrolyte injecting the counter electrode and the working electrode.

At present, the above-mentioned electrolyte infusion step is often performed manually, so that the dye sensitized battery has low productivity, high personnel cost, and often has an abnormal electrolyte perfusion problem.

In view of the above various problems, it is urgent to propose an electrolyte infusion method which can replace the manual by an automated process and greatly reduce the abnormality of the electrolyte perfusion.

One aspect of the present invention is to provide an electrolyte infusion method for a dye-sensitized battery. In this method, a dye-sensitized battery module is first provided. The dye-sensitized battery module includes a counter electrode and a working electrode. The working electrode is disposed on the counter electrode to form at least one electrolyte bath. Then, the target electrode is subjected to a drilling process to form a plurality of holes for the at least one electrolyte solution, wherein the target electrode is one of the counter electrode and the working electrode, and the hole includes the first hole and the second hole. Next, the stage is used to carry the dye-sensitized battery module, and the stage is driven to tilt the dye-sensitized battery module. Then, an electrolyte perfusion module is driven to tilt the electrolyte perfusion module to the perfusion angle, wherein the electrolyte perfusion module comprises a perfusion head and a suction head. Next, a gas extraction head is used to extract gas from the second hole. The filling head is then used to infuse the electrolyte from the first hole into the electrolyte bath.

According to an embodiment of the present invention, the electrolyte infusion method further comprises: driving the stage to return the dye-sensitized battery module to an un-tilted state after the electrolyte is injected into the electrolyte tank; driving the electrolyte infusion module So that the filling head and the pumping head are separated from the first hole and the second hole. Wherein, when the pumping head is separated from the second hole, the pumping head extracts the electrolyte overflowing from the second hole.

According to an embodiment of the invention, the electrolyte infusion method further comprises: wiping the predetermined area of the target electrode after the filling head and the pumping head are separated from the first hole and the second hole.

According to an embodiment of the invention, the electrolyte infusion method further comprises: capturing an electrode image of the target electrode; and determining whether the electrolyte remains on the target electrode according to the electrode image. When it is judged that electrolyte remains in the target An abnormal warning message is issued on the electrode.

According to an embodiment of the present invention, the electrolyte infusion method further comprises: coating an ultraviolet curing glue on the first hole and the second hole; and curing the ultraviolet curing glue by using ultraviolet rays to seal the first hole and the second hole. Hole.

In accordance with an embodiment of the invention, the electrolyte infusion module injects less than 0.2 milliliters (cc) of electrolyte into the electrolyte bath.

According to an embodiment of the invention, the aforementioned filling angle is 30 degrees.

According to an embodiment of the invention, the steps of driving the stage and the electrolyte infusion module to tilt the dye-sensitized battery module and the electrolyte infusion module are performed simultaneously.

According to an embodiment of the invention, the step of extracting gas from the second hole by means of the suction head utilizes a vacuum generator to cause the electrolyte tank to assume a negative pressure state.

In accordance with an embodiment of the present invention, the step of infusing the electrolyte from the first orifice using the perfusion head utilizes a perfusion pump to adjust the perfusion flow rate and flow rate of the electrolyte.

100‧‧‧ electrolyte infusion method

102~128‧‧‧Steps

200‧‧‧Dye-sensitized battery module

210‧‧‧ opposite electrode

220‧‧‧Working electrode

221‧‧‧Electrical conduction path

230‧‧‧ electrolyte tank

240‧‧‧Hot melt film

232‧‧‧ first hole

234‧‧‧Second hole

410‧‧‧stage

412‧‧‧ Subject

414‧‧‧Support frame

420‧‧‧Electrolyte perfusion module

422‧‧‧Perfusion head

424‧‧‧Exhaust head

500‧‧‧Electrolyte perfusion system

510‧‧‧infusion fixture

520‧‧‧Pumping fixture

530‧‧‧Perfusion pump

540‧‧‧Electrolyte storage tank

550‧‧‧vacuum pump

562, 564‧‧ ‧ waste valve

570‧‧‧Vacuum generator

580‧‧‧Proportional valve

590‧‧‧Waste tank

710‧‧‧Preset wipe area

910‧‧‧UV hardening glue

A-A’‧‧‧ tangent

B-B’‧‧‧ tangent

C-C’‧‧‧ tangent

GU‧‧‧ positive pressure gauge

P1‧‧‧ Target

SW1‧‧‧ vacuum switch

SW2, SW3‧‧‧ check valve switch

Θ‧‧‧infusion angle

The above and other objects, features, advantages and embodiments of the present invention will become more <RTIgt; <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; Schematic diagram of the electrolyte infusion method of the sensitized battery; 2A is a schematic top view of a dye-sensitized battery module according to an embodiment of the invention; [FIG. 2B] shows a dye-sensitized battery module along a tangent line A-A according to an embodiment of the invention. 'FIG. 2C is a schematic cross-sectional view of the dye-sensitized battery module according to an embodiment of the present invention taken along a tangential line B-B'; [FIG. 3A] is illustrated according to the present invention. FIG. 3B is a schematic cross-sectional view of the dye-sensitized battery module according to an embodiment of the present invention taken along a tangent line C-C'; 4] illustrates a stage and an electrolyte infusion module according to an embodiment of the present invention; [FIG. 5] is a functional block diagram of an electrolyte infusion system according to an embodiment of the present invention; [FIG. 6] is a schematic diagram a stage according to an embodiment of the present invention and an electrolyte infusion module; [FIG. 7] illustrates a stage and an electrolyte infusion module according to an embodiment of the present invention; [FIG. 8] illustrates an embodiment according to the present invention. a predetermined wiping area of the dye-sensitized battery module; and [FIG. 9] illustrating the implementation according to the present invention The ultraviolet curable adhesive is applied to the target electrode.

The terms "first", "second", "etc." used in this document are not intended to mean the order or the order, and are merely to distinguish between elements or operations described in the same technical terms.

1A and FIG. 1B, FIG. 1A and FIG. 1B are schematic flow charts showing an electrolyte infusion method 100 of a dye-sensitized battery according to an embodiment of the invention. In this electrolyte infusion method 100, step 102 is first performed to provide a dye-sensitized battery module 200, as shown in FIGS. 2A, 2B, and 2C. 2A is a schematic view showing the structure of the dye-sensitized battery module 200; FIG. 2B is a schematic cross-sectional view of the dye-sensitized battery module 200 taken along the line A-A'; A schematic diagram of a cross-sectional structure of the sensitized battery module 200 as viewed along a tangential line B-B'. The dye-sensitized battery module 200 includes a counter electrode 210 and a working electrode 220, wherein the working electrode 220 is disposed on the counter electrode 210 to form at least one electrolyte bath 230. In the present embodiment, the counter electrode 210 and the working electrode 220 are bonded and fixed by the hot melt adhesive film 240, and the electrolyte bath 230 is composed of the counter electrode 210, the working electrode 220, and the hot melt adhesive film 240. In addition, the counter electrode 210 and the working electrode 220 respectively have a plurality of electrical conduction paths 221 for conducting electrical energy generated by the dye-sensitized battery module 200. In the present embodiment, the electrically conductive path 221 is a silver wire, and the hot melt adhesive film 240 is aligned with the silver wire.

In step 104, the working electrode 220 or the counter electrode 210 is drilled to form a plurality of holes 232, 234 for each of the electrolyte baths 230, as shown in Figures 3A and 3B. 3A is a schematic view showing the structure of the dye-sensitized battery module 200, and FIG. 3B is a schematic cross-sectional view of the dye-sensitized battery module 200 taken along the line C-C'. In this embodiment In step 104, the counter electrode 210 is selected as the target electrode of the borehole, and the first hole 232 and the second hole 234 are formed for each of the electrolyte tanks 230. The first hole 232 and the second hole 234 are located on opposite sides of the electrolyte tank 230 and close to the electrical conduction path 221 . In addition, in order to be able to drill at the correct position, the target P1 on the dye-sensitized battery module 200 can be used for positioning.

In the above embodiment, step 102 is first provided to provide the dye-sensitized battery module 200, and then step 104 is performed to drill the electrodes on the dye-sensitized battery module 200, but the embodiment of the present invention is not Limited by this. In other embodiments of the present invention, the electrodes may be drilled first and then combined into a dye-sensitized battery module 200, that is, step 104 is performed before step 102.

In step 106, the stage 410 is used to carry the dye-sensitized battery module 200, and the stage 410 is driven to tilt the dye-sensitized battery module 200 on the stage 410 and have a filling angle θ, as shown in FIG. As shown, the height of the first aperture 232 is such that it is higher than the second aperture 234. In the present embodiment, the stage 410 is inclined by 30 degrees, so the filling angle θ of the dye-sensitized battery module 200 is also 30 degrees. In the present embodiment, the stage 410 includes a body 412 and a support frame 414. There is a rotating shaft (not shown) between the support frame 414 and the main body 412, so that the main body 412 can be rotated according to the perfusion angle θ required by the user to adjust the value of the perfusion angle θ.

In step 108, the electrolyte infusion module 420 is driven such that the electrolyte infusion module 420 also tilts the perfusion angle θ as shown in FIG. In the present embodiment, steps 106 and 108 are performed simultaneously, that is, the stage 410 and the electrolyte infusion module 420 are simultaneously tilted by the above-described perfusion angle, that is, 30 degrees. However, embodiments of the invention are not limited thereto. The electrolyte infusion module 420 includes a filling head 422 and a pumping head 424 that are coupled to the electrolyte infusion system 500 such that the electrolyte infusion system 500 can inject electrolyte into the electrolyte tank using the electrolyte infusion module 420. 230.

In steps 110 and 112, the filling head 422 is coupled to the first bore 232 and the extraction head 424 is coupled to the second bore 234 such that the extraction head 424 can draw gas from the second bore 234 to cause the electrolyte tank 230 The negative pressure state is presented, and the filling head 422 injects electrolyte from the first hole 232 into the electrolyte tank 230. In this embodiment, the electrolyte infusion module 420 extracts the air in the electrolyte tank 230, and then injects the electrolyte into the electrolyte tank 230 according to a preset flow rate and a preset injection volume to fill the electrolyte. Electrolyte tank 230. In the present embodiment, the electrolyte infusion module 420 injects 0.2 ml (cc) or less than 0.2 ml of electrolyte into the electrolyte bath 230. In addition, the target hole P1 on the dye-sensitized battery module 200 can be used to position the first hole 232 and the second hole 234 so that the filling head 422 and the pumping head 424 can be accurately aligned to the first hole 232. And a second hole 234.

Please refer to FIG. 5, which is a functional block diagram of an electrolyte infusion system 500 in accordance with an embodiment of the present invention. The electrolyte infusion system 500 includes an infusion jig 510, a suction jig 520, a perfusion pump 530, an electrolyte storage tank 540, a vacuum pump 550, waste liquid valves 562 and 564, a vacuum generator 570, a proportional valve 580, and a waste liquid. The reservoir 590, the vacuum switch SW1, and the check valve switches SW2 and SW3. The perfusion fixture 510 is coupled to the irrigation head 422 to provide electrolyte to the irrigation head 422. The perfusion pump 530 is connected to the electrolyte storage tank 540 and the perfusion fixture 510 to extract electrolysis from the electrolyte storage tank 540. The liquid is supplied to the perfusion fixture 510, wherein the perfusion pump 530 can adjust the perfusion flow rate and flow rate of the electrolyte according to user requirements. The vacuum pump 550 is connected to the electrolyte storage tank 540 through the vacuum switch SW1 to extract gas from the electrolyte storage tank 540. In the present embodiment, when the filling head 422 and the suction head 424 are connected to the electrolyte tank 230 of the dye-sensitized battery module 200, the vacuum generator 570 extracts gas from the electrolyte tank 230, at this time because of the electrolyte. The perfusion heads 422 and 424 are communicated through the electrolyte tank 230, and the electrolyte in the electrolyte storage tank 540 is also extracted, so that the electrolyte is pumped into the electrolyte tank 230. To prevent this problem, the present embodiment The vacuum pump 550 draws gas from the electrolyte storage tank 540 to balance the pressure between the electrolyte tank 230 and the electrolyte storage tank 540.

The suction jig 520 is coupled to the extraction head 424 and the vacuum generator 570 to extract the gas from the electrolyte tank 230 using the vacuum generator 570. In the present embodiment, a proportional valve 580 and a positive pressure head GU are disposed between the vacuum generator 570 and the positive pressure source. The proportional valve 580 is used to control the flow of compressed gas provided by the positive pressure source, while the positive pressure meter GU is used to display the flow rate of the compressed gas.

The waste liquid storage tank 590 is used to store the waste liquid generated during the electrolyte infusion process. For example, when the perfusion jig 510 injects a predetermined volume of electrolyte into the electrolyte tank 230, the perfusion pump 530 stops providing electrolyte to the perfusion fixture 510. At this time, the excess electrolyte in the perfusion jig 510 flows through the check valve switch SW2 and the waste liquid valve 562 to the waste liquid storage tank 590. Similarly, the excess electrolyte in the extraction jig 520 also flows through the check valve switch SW3 and the waste valve 564 into the waste reservoir 590.

In step 114, after the electrolyte injection is completed, the stage 410 and the electrolyte infusion module 420 are driven to return the dye-sensitized battery module 200 and the electrolyte infusion module 420 to a horizontal state, as shown in FIG. It is worth mentioning that during the process in which the dye-sensitized battery module 200 and the electrolyte potting module 420 are returned to the horizontal state, the filling head 422 is still connected to the first hole 232, and the pumping head 424 is still connected to the second. The holes 234 are formed to prevent electrolyte from flowing out of the first holes 232 and the second holes 234.

In step 116, the electrolyte infusion module 420 is driven to cause the perfusion head 422 and the extraction head 424 to exit the dye-sensitized battery module 200, as shown in FIG. In the present embodiment, when the suction head 424 is removed from the second hole 234, the vacuum generator 570 is not closed, so that the waste liquid overflowed by the second hole 234 can be slightly extracted by the suction head 424.

In step 118, the stage 410 is driven to move the stage 410 below the wiping mechanism to wipe the predetermined wiping area of the target electrode (in this embodiment, the counter electrode) with a wiping mechanism. During the infusion of the electrolyte, there is an electrolyte overflowing the electrolyte tank 230. Therefore, step 118 uses a wiping mechanism to wipe the predetermined wiping area 710 of the dye-sensitized battery module, as shown in FIG. 8, wherein the preset wiping area 710 is defined as a surrounding area of the first hole 232 and the second hole 234. However, the embodiments of the present invention are not limited thereto. In addition, the step 118 can also use the target point P1 to position the preset wiping area 710 so that the wiping mechanism can accurately wipe the preset wiping area 710.

In step 120 and step 122, the image of the target electrode is captured, and whether the electrolyte remains on the target electrode is determined according to the electrode image. If an electrolyte remains on the target electrode, proceed to step 124 to define It often happens and a warning message is issued. In this embodiment, the warning signal can be a sound, a text or a light message.

If no electrolyte remains on the target electrode, step 126 and step 128 are performed to apply ultraviolet curable glue (UV glue) 910 to the first hole 232 and the second hole 234, and the ultraviolet curing agent is irradiated with ultraviolet rays. The 910 is hardened to close the first hole 232 and the second hole 234 as shown in FIG.

While the invention has been described above in terms of several embodiments, it is not intended to limit the scope of the invention, and the invention may be practiced in various embodiments without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims.

Claims (10)

An electrolyte infusion method for a dye-sensitized battery, comprising: providing a dye-sensitized battery module, comprising: a pair of electrodes; and a working electrode disposed on the pair of electrodes to form at least one electrolyte tank; The target electrode performs a drilling process to form a plurality of holes for the at least one electrolyte solution, wherein the target electrode is one of the pair of electrodes and the working electrode, and the holes comprise a first hole and a second hole Using a stage to carry the dye-sensitized battery module, and driving the stage to tilt the dye-sensitized battery module by a perfusion angle; driving an electrolyte perfusion module to enable the electrolyte perfusion module Inclining the pouring angle, wherein the electrolyte infusion module comprises a filling head and a pumping head; the pumping head is used to extract gas from the second hole; and the potting head is used to inject an electrolysis from the first hole The liquid is supplied to the at least one electrolyte tank. The electrolyte infusion method of the dye-sensitized battery according to claim 1, further comprising: driving the stage after the electrolyte is injected into the at least one electrolyte tank to make the dye-sensitized battery module Returning the group to an untilted state; and driving the electrolyte infusion module to cause the infusion head and the pumping head to The first hole and the second hole exit; wherein, when the suction head is separated from the second hole, the suction head extracts the electrolyte overflowing from the second hole. The electrolyte infusion method of the dye-sensitized battery according to claim 2, further comprising: wiping the target electrode after the filling head and the suction head are separated from the first hole and the second hole; A preset area. The electrolyte infusion method of the dye-sensitized battery according to claim 3, further comprising: extracting an electrode image of the target electrode; and determining, according to the electrode image, whether an electrolyte remains on the target electrode; When it is judged that an electrolyte remains on the target electrode, an abnormal warning message is issued. The electrolyte infusion method of the dye-sensitized battery of claim 4, further comprising: coating an ultraviolet curing glue on the first hole and the second hole; and using ultraviolet rays to make the ultraviolet curing glue Hardening to seal the first hole and the second hole. Dye sensitized electricity as described in claim 1 The electrolyte infusion method of the pool, wherein the electrolyte infusion module injects less than 0.2 milliliters (cc) of the electrolyte into the at least one electrolyte tank. An electrolyte infusion method for a dye-sensitized battery according to claim 1, wherein the perfusion angle is 30 degrees. The method for injecting an electrolyte of a dye-sensitized battery according to claim 1, wherein the step of driving the stage and the electrolyte infusion module to tilt the dye-sensitized battery module and the electrolyte infusion module The system is synchronized. The electrolyte infusion method of the dye-sensitized battery of claim 1, wherein the step of extracting gas from the second hole by using the pumping head uses a vacuum generator to render the at least one electrolyte tank Negative pressure state. The electrolyte infusion method of the dye-sensitized battery according to claim 1, wherein the step of injecting the electrolyte from the first hole by using the filling head adjusts one of the electrolytes by using a perfusion pump Flow rate and a flow rate.