CN103094586A

CN103094586A - Integrated collection tube of flow battery

Info

Publication number: CN103094586A
Application number: CN201310008283XA
Authority: CN
Inventors: 王昕�
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-10
Filing date: 2013-01-10
Publication date: 2013-05-08

Abstract

The invention provides a method for enhancing the tightness among capillary tubes in a collection tube and a battery pack (1) by forming an integrated collection tube connected with the battery pack (1) in a flow battery. The method provided by the invention comprises the steps that: mold cavities (27) connected with the battery pack (1) are manufactured, and openings of the mold cavities (27) face openings of the capillary tubes in the battery pack. A certain quantity of needles (21) are put into the mold cavities, and the tails of the needles (21) are inserted into the capillary tubes. Then, the mold cavities are filled with materials, and the materials are hardened and molded in the mold cavities. Finally, the needles (21) are taken away from hardened materials, so that passages are formed, so that liquid can flow among the collection tube and the capillary tubes.

Description

The integrated convergent pipe of flow battery

Technical field

The present invention relates to the collecting pipe of flow battery.Especially, but and non-exclusive, the present invention relates to form the method for integrated convergent pipe, this collecting pipe can be used for the battery pack of flow battery.

Background technology

Lead acid accumulator often is used in autonomous power supply system.Yet there are a lot of restrictions in lead acid accumulator aspect performance and Environmental security.Lead acid accumulator usually under the condition of sweltering heat the life-span extremely short, particularly fully the discharge in.In addition, lead acid accumulator is very large to the harm of environment, because lead is the key component of lead acid accumulator, can cause serious environmental problem during making and processing.

Flow battery, as zinc-bromine bettery, full vanadium cell, the sodium polysulfide/bromine battery provides possibility for overcoming the above-mentioned restriction of lead-acid battery.Particularly, the probable life of flow battery is not subjected to the impact of deep discharge, and the energy to weight ratio of flow battery is higher six times than lead-acid battery.Yet the production of flow battery is more difficult than lead acid accumulator.As lead-acid battery, flow battery is made of stacks of cells, to produce the specific voltage higher than cell voltage.But different from lead-acid battery is that the battery unit of flow battery is by the circulate electrolyte hydraulic connecting.The problem that produces is when by-pass current flows between element cell by the circulate electrolyte path, can cause that energy loss and the energy in battery is uneven.In order to prevent or to reduce this by-pass current, the battery unit in flow battery must have sufficiently long circulate electrolyte path, can increase like this resistance between battery.

Battery pack is carried and pulled out to electrolyte by the collecting pipe of outside.Each battery unit has a plurality of imports and outlet at the capillary exit in circulate electrolyte loop.Each outside collecting pipe is connected on battery pack by a precise part that is comprised of elastic connecting pipe.216 elastic connecting pipes of battery pack needs that typically contain 54 unit.The parts of this precision not only are difficult to make, and also easily damage between assembling and operating period.

With reference to Fig. 1, the figure shows the schematic diagram of a battery pack (1) of existing flow battery.Each unit in battery pack is connected by the collecting pipe (2) of a series of elastic connecting pipe (3) with the outside.

The objective of the invention is in order to solve one or more defectives of above-described existing flow battery, comprising the improvement to outside collecting pipe.

Another object of the present invention is to provide a method of making integrated convergent pipe in flow battery.

Summary of the invention

At first, the present invention is for a kind of manufacture method of the integrated convergent path for each stacks of cells of connecting fluid galvanic battery is provided.Method comprises:

Make a die cavity adjacent with battery pack, the opening of die cavity is facing to the capillary exit in battery pack.

Put a plurality of pins in die cavity, afterbody and the capillary exit of pin join; Then fill out material in die cavity, then with the material hardened forming, take away at last the pin of the inside, can carry out with capillary exit the passage of fluid exchange thereby formed in hardened material.

Saying is more specifically, and the present invention has comprised the manufacture method of the path that formation is connected with battery unit:

One of method is to put a collecting pipe core at Material Filling before the die cavity to form the cavity that confluxes, and allows pin pass this core

Another method is to form with the method for machining the cavity that confluxes later in moulding.

The present invention has also comprised the conflux method of part passage between cavity and hardened material outer surface of sealing.Comprise:

Capillary exit is in end capillaceous, and capillary is deep in battery always;

When material hardened, syringe needle was exposed at outside die cavity, and backshank injects capillary exit;

The diameter of syringe needle is larger than the diameter of backshank;

The mould bases that is used for making die cavity can take out after the material sclerosis;

Take out pin with the extraction plate;

Many holes are arranged on mould bases, when sticking a needle into die cavity, also be fixed in hole corresponding on mould bases.

Corresponding beginning of the present invention is described, and the present invention is applicable to have the flow battery of integrated convergent pipe.

Description of drawings

In order to help to understand the present invention and implement the present invention, with reference to the accompanying drawings enforcement of the present invention is described.

Fig. 1 is the schematic diagram of existing flow battery with outside collecting pipe.

Fig. 2 is the schematic diagram at mould framing plate top in a battery pack of flow battery.

Fig. 3 is the part battery pack in Fig. 1 and the schematic diagram that is positioned at the collecting pipe core of mould framing plate.

Fig. 4 is that the collecting pipe core in Fig. 3 is passed by pin, injects the schematic diagram of capillary exit.

Fig. 5 is the battery unit in Fig. 4, collecting pipe, and pin, and further show the schematic diagram of mould bases top board and bottom.

Fig. 6 is identical with Fig. 5, but further represents the schematic diagram of another side plate of mould bases.

Fig. 7 is another angle schematic diagram of mould bases in Fig. 6.

Fig. 8 is after taking away side plate, and formed integrated convergent pipe is at the schematic diagram of one jiao of battery pack.

Fig. 9 is the schematic diagram of making the pin of integrated convergent pipe.

Embodiment

Embodiments of the present invention comprise the manufacture method of the integrated convergent pipe of battery unit in the connecting fluid galvanic battery, and contain the manufacture method of the flow battery of integrated convergent pipe.Parts of the present invention with the mode illustration of succinct summary in the drawings, these accompanying drawings are just in order to illustrate what preferred embodiment of the present invention was used, rather than in order to limit it; These accompanying drawings have only been expressed the execution mode that is used for understanding necessary detail of the present invention, do not provide too much to the apparent details of professional person.In addition, this paper is shown and the needs of the visual concrete purposes of various aspects of the present invention of explanation separately use or become various being used in combination.

With reference to Fig. 2,3, also have Fig. 5-8, these figure have shown a kind of method of the integrated convergent pipe for the production of making flow battery.These figure have embodied on a corner of battery unit in flow battery, are how to form the integrated convergent pipe.Identical integrated convergent pipe all can be arranged on other places in four jiaos of battery unit or battery.

Fig. 2 is one jiao of schematic diagram of a battery pack (1) in flow battery, has embodied the first step of making the integrated convergent pipe: battery pack (1) is fixed on the mould framing plate (5) of many apertures (6).Contain a plurality of by electrode stacks plate (7) and the battery unit that forms every the barrier film between battery lead plate (8) in battery pack (1).Each battery unit is by a battery lead plate (7), and adjacent barrier film (8) and a capillary (9) form.Capillary (9) is placed in capillary channel between battery lead plate (7) and adjacent barrier film (8).As shown in the figure, capillary will expose the edge of battery lead plate (7) and barrier film (8) slightly.See down from the top, battery similarly is a rectangle that is cut off a jiao (11) basically.Material capillaceous can be macromolecule, perhaps any material that can fuse with injected plastic.Mould framing plate (5) belongs to the part of mould bases, and mould bases has consisted of and one jiao of die cavity that is connected of battery pack.

With reference to Fig. 3, be positioned at the zone (11) that is cut off, collecting pipe core (13) is positioned on base plate (5).The collecting pipe core is cylindrical substantially, and base (15) and top (17) are arranged.Base (15) is fixed on base plate (5).Have on collecting pipe core (13) two rows staggered aperture (19), aperture is aimed at the capillary (9) mouthful of battery pack (1).

With reference to Fig. 4, the aperture (19) that pin (21) is inserted collecting pipe core (13) is inner.These pins (21) pass collecting pipe core (13) by aperture (19).Pin (21) tail injects capillary (9) mouth, thereby seals up capillary.Figure four has just provided pin with respect to the disposing way in collecting pipe core and battery pack, does not embody the method that how to form the integrated convergent pipe.

Fig. 5 has embodied next step that forms the integrated convergent pipe.The top of battery pack (1) is mould bases top board (23), and side is mould bases side plate (25).Mould framing plate (5) like this, top board (23), the space that side plate (25) and side plate (33) surround has just formed die cavity (27).The hole that has a row to interlock on side plate (25) is corresponding with the hole (19) on collecting pipe core (13).A stuffing hole (31) of opening to die cavity (27) is arranged on top board (23).In practical application, the packing material of heating is injected into die cavity (27) from stuffing hole (31).Packing material can be that any energy is with the macromolecular material of battery lead plate (7) and the effective combination of capillary (9).Packing material all encases the edge of battery lead plate (7), thereby battery lead plate (7) is sealed; Simultaneously, also the outer surface of the capillary (9) of every projection electrode plate (7) is encased, seals.In addition, top board (23) is upper also has a hole (29) corresponding with the top (17) of collecting pipe core (13).The hole of pin (21) by side plate (25) inject in die cavity, shown in figure four, passes collecting pipe core (13) for another example, injects capillary (9) mouthful.

Fig. 6 and Fig. 7 have embodied the different angles schematic diagram of the battery pack that is encased by mould bases.Hole (35) on mould bases side plate (33) is corresponding with the location hole (6) on top board (23) and base plate (5).Side plate (33) is passed hole (35) with securing member and location hole (6) is fixed together with base plate (5) and top board (23).In addition, load onto on mould bases side plate (25) and extract plate (26), pin (21) is put into extracted in plate.

As shown in Fig. 6 and 7, after battery pack is encased by mould bases, mold materials is filled in die cavity (27).The material of filling can be polyethylene, polypropylene, or other suitable materials.Then wait the mold materials setting.

According to shown in Figure 8, after material shaping, take away the fastener that is used for fixing mould bases, pin (21) and plate (5), plate (23), plate (25) and plate (33).The extraction plate (26) of taking away on side plate (25) just can be taken away pin (21).At last, take away collecting pipe core (13).Inner at final hardened material (37), originally the position of collecting pipe core (13), formed passage (39) between the cavity that confluxes (41) and capillary (9).The passage (42) of hardening sealant material (37) outside and cavity (41) of confluxing.So just formed the integrated convergent pipe of flow battery, having comprised: the passage (39) in the cavity that confluxes (41) and hardened material (37).Wherein, passage (39) has connected the cavity that confluxes (41) and capillary (9) swimmingly.

Another feasible method is, at dress plate (5), plate (23), plate (25), and plate (33) is when forming mould bases, take away the collecting pipe core (13) in die cavity (27), after being shaped in mould bases, take away plate (5), plate (23) when material, plate (25) and plate (33), then make a call to a hole just formed the cavity that confluxes in hardened material (37).

Formation is confluxed after cavity, and side plate can just can be welded in the periphery of unit group (1), comprises each limit of die cavity face (37), thereby effectively seals up battery unit.Multiple solder technology can be used for welding side plate.

According to Fig. 9, pin (21) comprises syringe needle (45), backshank (43) and connection elongated portion (47) end to end.The diameter of backshank (43) just can inject capillary exit, can effectively seal up capillary like this, clogging capillary (9) mouth when preventing to die cavity (27) filler.The size of elongated portion (47) just can inject in the hole (19) of collecting pipe core (13), can seal up like this cavity that confluxes (41), prevents flowing to the cavity that confluxes (41) in filler.The size of syringe needle (45) is larger than the hole of extracting on plate (26).Like this, take away on slave plate (25) when extracting plate (26), also taken away pin (21).

The integrated convergent pipe that makes with said method is than the more difficult damage of existing outside collecting pipe, and makes better tightness between collecting pipe and capillary.

To sum up, make the integrated convergent pipe core (13) that mainly needs to conflux, pin (21), plate (5), plate (23), plate (25), plate (33).

Above various embodiments of the present invention aim to provide description of related art, and should in no way limit on embodiment described herein.Specification of the present invention is intended to comprise what all substituted, change, this paper had discussed, and other other execution modes within the spirit and scope of the present invention.

Claims

1. connect the formation method of the integrated convergent pipe path of battery unit in a flow battery, method comprises:

Make an adjacent die cavity with battery unit, the opening of die cavity is facing to the capillary exit in battery pack;

Put a plurality of pins in die cavity, afterbody and the capillary exit of pin join;

Fill out material in die cavity;

With the material hardened forming;

Take away the pin of the inside, so just formed in hardened material and can carry out with capillary exit the passage of fluid exchange.

2. integrated convergent pipe according to claim 1, is characterized in that: also comprise the cavity that confluxes that forms interface channel.

3. integrated convergent pipe according to claim 1 is characterized in that: put a collecting pipe core at Material Filling before the die cavity and form the cavity that confluxes, and allow pin pass this core.

4. the shape cavity that confluxes according to claim 2 is characterized in that: moulding forms with the method for machining the cavity that confluxes later on.

5. integrated convergent pipe according to claim 1 is characterized in that: sealing conflux cavity and hardened material outer surface passage.

6. integrated convergent pipe according to claim 1, it is characterized in that: capillary exit is in bottom capillaceous, and capillary is deep in battery always.

7. integrated convergent pipe according to claim 1 is characterized in that: when material hardened, syringe needle was exposed at the die cavity outside, and backshank injects capillary exit.

8. pin according to claim 7, it is characterized in that: the diameter of syringe needle is larger than the diameter of backshank.

9. will play 1 described integrated convergent pipe according to right, it is characterized in that: the mould bases that is used for making die cavity can take out after the material sclerosis.

10. mould bases according to claim 9 is characterized in that: many holes are arranged on mould bases, and when sticking a needle into die cavity, pin is fixed in hole corresponding on mould bases.

11. integrated convergent pipe according to claim 1 is characterized in that: take out pin with the extraction plate.

12. integrated convergent pipe according to claim 1 is characterized in that: in flow battery, the integrated convergent pipe of battery pack has comprised the integrated convergent passage.