CN102195009A - Locking device for liquid stream cell stack - Google Patents
Locking device for liquid stream cell stack Download PDFInfo
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- CN102195009A CN102195009A CN2010101210437A CN201010121043A CN102195009A CN 102195009 A CN102195009 A CN 102195009A CN 2010101210437 A CN2010101210437 A CN 2010101210437A CN 201010121043 A CN201010121043 A CN 201010121043A CN 102195009 A CN102195009 A CN 102195009A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a locking device for a liquid stream cell stack. The locking device comprises end plates arranged on both sides of the liquid stream cell stack respectively, locking frames arranged on the outer sides of the end plates respectively, and locking bolts and locking nuts which are connected with the locking frames in a fastened way, wherein screw holes are formed on the locking frames; the locking bolts pass through the screw holes; the locking nuts are screwed at the ends of the locking bolts; the side surfaces, facing the locking frames, of the end plates are provided a plurality of first positioning pieces; a plurality of second positioning pieces corresponding to the first positioning pieces are arranged on the locking frames; the positions of the first positioning pieces and the second positioning pieces correspond to the periphery of an electrolyte liquid stream frame in the liquid stream cell stack; and elastic pieces are arranged between the first positioning pieces and the second positioning pieces. By the locking device, good sealing of the electrolyte liquid stream frame most required to be sealed and compressed can be guaranteed, a compaction force applied to on the cell stack is kept uniform on the whole cell stack plane and relative sliding of components in the liquid stream cell stack can be prevented effectively; therefore, reliable sealing and locking of the liquid stream cell stack can be realized.
Description
Technical field
Present invention relates in general to the redox flow batteries energy storage device.Particularly, the present invention relates to a kind of locking device that is used for liquid stream battery stack.
Background technology
In order to preserve the ecological environment, realize continuable sound development, " green energy resource " all greatly developed in the whole world, and this " green energy resource " can recover additional after consuming, seldom produce and pollute." green energy resource " also claims clean energy resource, is meant regenerative resource, as water energy, biological energy source, solar energy, wind energy, geothermal energy and oceanic energy etc.This " green energy resource " all brings into play very important effect now and in the future in energy supply.
Although existing multiple method and the approach that utilizes solar energy, wind energy directly is converted into electric energy utilization, have the transformation efficiency height, the social total cost is low, and the Technological Economy aspect takes advantage, and becomes feasible technical route.Yet, because wind energy, solar energy are along with the time changes its energy density generation marked change, cause the wind-force difference in size as day and night temperature, different time sections solar irradiation Strength Changes is obvious, the power output existence that causes Blast Furnace Top Gas Recovery Turbine Unit (TRT) is fluctuated widely, and is difficult to satisfy society to lasting, stable, controlled electric power energy demand.For this reason; exploitation is suitable for the redox flow batteries system that large-scale electric energy stores; unsettled electric energy input is become continuous, safe and reliable electric energy output; the solution scale utilizes the great energy storage technology problem in wind energy, the solar power generation process, will become the important technology industry of the strategy of sustainable development.Novel pollution-free callable vanadium redox battery is exactly the representative of this energy storage technology.
All-vanadium flow battery is that a kind of new electric energy stores and efficient reforming unit, has that capacitance of storage is big, the life-span is long, cost is low, efficient is high, nontoxic eco-friendly characteristics, has the value that large-scale development is used.Can be widely used in solar power generation, the extensive energy storage of wind power generation.All-vanadium flow battery also can be applicable to " peak load disappears " of existing network system, improves electric network security and reliability, fields such as the emergency power supply of communication system.
The all-vanadium flow battery principle is shown in Fig. 1 a and 1b, and the vanadium ion by different valence state transforms storage and the release that realizes electric energy mutually, and electrochemical reaction wherein is as follows:
Anodal reaction:
Negative reaction:
The structural representation of all-vanadium flow battery as shown in Figure 2, wherein each monocell comprises barrier film 100, divides and to be located at a pair of electrolyte liquid flow frame 200 of barrier film 100 both sides and a pair of bipolar plates 300 that lays respectively at electrolyte liquid flow frame 200 outsides.Flow battery inside is separated into territory, anodal electrolysis liquid zone 400 and territory, negative pole electrolysis liquid zone 500 by barrier film 100.In above-mentioned each zone, be provided with described bipolar plates 300 identical with respective regions electrolyte polarity and the tow sides same polarity.
Each monocell of all-vanadium flow battery can only provide the voltage about 1.26V, needs in the actual use a plurality of monocells are connected into battery pack, uses collector plate to connect between monocell, could export the electric current and the voltage of rated power.In order to develop extensive redox flow battery energy storage system, the battery pile of flow battery becomes important step, need guarantee the sealing of electrolyte in the running, guarantees smooth and easy flow of electrolyte in monocell simultaneously.Be necessary to develop a kind of effective battery pile locking device like this, to realize the positiver sealing and the locking of liquid stream battery stack.
The most of liquid stream battery stack locking device that exists at present adopts plate compression to pile up principle each parts of liquid stream battery stack is locked by pressure at two ends.For example as Fig. 3 schematically showed, a pair of end plate 20 was separately positioned on the both sides of liquid stream battery stack 10, and the height of end plate 20 is greater than the height of liquid stream battery stack 10, and promptly the last lower limb of end plate 20 extends beyond liquid stream battery stack 10 respectively.Lower limb is respectively arranged with a plurality of screwed holes on end plate 20, thereby bolt 40 passes the end plate 20 that screwed hole connects liquid stream battery stack 10 both sides, is locked thereby nut 50 is screwed in the liquid stream battery stack 10 that the end of bolt 40 will be clamped between the end plate 20.Fig. 4 illustrates other a kind of similar locking device, wherein for the size that reduces end plate and weight so that economical with materials, the size of end plate 20 itself basically with the consistent size of liquid stream battery stack (not shown), periphery at end plate 20 is provided with a plurality of flanges 30, each flange 30 is provided with screwed hole, thereby the bolt (not shown) passes the end plate 20 that screwed hole connects the liquid stream battery stack both sides, is locked thereby the nut (not shown) is screwed in the liquid stream battery stack that the end of bolt will be clamped between the end plate 20.
Yet in above-mentioned liquid stream battery stack locking device, the end plate by bolt tension liquid stream battery stack both sides is to compress liquid stream battery stack integral body, and thrust is delivered to end plate from bolt, its with mode mean allocation of plane distribution to whole liquid stream battery stack plane.The problem of Cun Zaiing is like this, and the electrolyte liquid flow frame of each monocell in the liquid stream battery stack is owing to stressedly produce buckling deformation, and it is not good that this causes needing most the sealing effectiveness that seals the electrolyte liquid flow frame reality that compresses, and is easy to generate the solution leakage problem.Simultaneously, this also brings the uneven problem of the suffered thrust of battery pile, causes electrolyte flow smooth and mobile inhomogeneous easily.In addition, also there is an intrinsic problem in this technology of locking liquid stream battery stack by pressure at two ends, promptly in assembling process and use, cause the slide relative of each parts in the liquid stream battery stack easily, this slide relative of each parts gently then causes electrolyte flow not smooth in the liquid stream battery stack, the heavy then liquid leakage that produces electrolysis.
For this reason, proposed several corrective measures recently, attempted to address the above problem by guaranteeing that thrust acts on the electrolyte liquid flow frame.The disclosed liquid stream battery stack locking device of Chinese patent CN2727974Y for example, it adopts the frame that compresses that fixed frame that an aluminium alloy makes and stainless steel with matching make, some monocells are inlaid in the fixed frame, use the trip bolt pressuring method that compresses on the frame to compress battery pile.Yet, for the large-sized battery heap,, cause sealing property relatively poor because the spacing that compresses between frame and the fixed frame is difficult to be consistent, be easy to generate the solution leakage problem after compressing.And battery pile only is subjected to along the thrust that compresses the frame periphery, and the suffered thrust of battery pile is inhomogeneous on entire cell heap plane like this, causes the not smooth and uneven problem that flows of electrolyte flow easily.In addition, this technology of locking liquid stream battery stack by pressure at two ends can not prevent the slide relative of each parts in the liquid stream battery stack, and this slide relative of each parts gently then causes electrolyte flow not smooth in the liquid stream battery stack, the heavy then liquid leakage that produces electrolysis.
As another kind of corrective measure, Chinese patent CN2852410Y discloses a kind of liquid stream battery stack locking device, and its insulating case that adopts metallic lock-screw, metallic locking nut and complexed metal pad and electrical insulating material to make is locked together a plurality of monocells.Yet in this battery pile locking device, owing to utilize screw that each monocell is connected into battery pile, this need reserve enough width and punching at the edge of each monocell, then screw is passed each monocell and add top nut fastening.Can bring following problem like this: in order to stop the position of punching, all parts of each monocell (for example barrier film, electrode, electrolyte liquid flow frame etc.) all need to widen (1), thereby cause the waste of material; (2) all need punch in each monocell, this is complex process not only, and causes the problem of poor sealing even solution leakage easily.In addition, because lock-screw is distributed on the edge direction of battery pile end plate, be that battery pile only is subjected to along the thrust of battery pile end plate periphery, the suffered thrust of battery pile is inhomogeneous on entire cell heap plane like this, causes the not smooth and uneven problem that flows of electrolyte flow easily.
As another corrective measure, Chinese patent CN201266642Y discloses a kind of liquid stream battery stack locking device, and it adopts and is separately positioned on the bayonet lock that matches on each parts of monocell and the structure of pin hole is assembled into battery pile with each monocell.Yet, in this battery pile locking device, on the one hand, need on the associated components (for example barrier film, electrode, electrolyte liquid flow frame etc.) of each monocell, bayonet lock and pin hole be set respectively, this is complex process not only, and causes the problem of poor sealing even solution leakage easily.On the other hand, the bayonet lock that matches and the thrust that structure produced of pin hole are difficult to guarantee each monocell is locked together reliably, thereby cause the problem of poor sealing performance, solution leakage.
To sum up, at present ubiquitous outstanding technical problem is in the prior art: it is not good that (1) needs most the actual sealing effectiveness of electrolyte liquid flow frame that sealing compresses, and is easy to generate the solution leakage problem; (2) the suffered thrust of battery pile is inhomogeneous on entire cell heap plane, causes the not smooth and uneven problem that flows of electrolyte flow easily; (3) prior art of locking liquid stream battery stack by pressure at two ends can not prevent the slide relative of each parts in the liquid stream battery stack, this slide relative of each parts gently then causes electrolyte flow not smooth in the liquid stream battery stack, the heavy then phenomenon of the liquid leakage that produces electrolysis.
Summary of the invention
Therefore, one of them purpose of the present invention is to provide a kind of locking device of liquid stream battery stack, this locking device at first can guarantee to need most the excellent sealing that seals the electrolyte liquid flow frame that compresses, can guarantee in the liquid stream battery stack that thereby the electrolyte liquid flow frame of each monocell is subjected to average thrust and avoids the electrolyte liquid flow frame to produce buckling deformation because of stressed, thereby guarantee to need most the sealing locking that seals the electrolyte liquid flow frame that compresses, fundamentally avoid the solution leakage problem.
Another object of the present invention is to provide a kind of locking device of liquid stream battery stack, and this locking device can guarantee that the suffered thrust of battery pile keeps evenly on entire cell heap plane, thereby avoids the not smooth and uneven problem that flows of electrolyte flow.
A further object of the present invention is to provide a kind of locking device of liquid stream battery stack, this locking device can prevent the slide relative of each parts in the liquid stream battery stack conscientiously, avoid the problem of the smooth even leakage of electrolyte flow, thereby realize the positiver sealing and the locking of liquid stream battery stack.
For realizing above-mentioned purpose of the present invention, a kind of locking device of liquid stream battery stack is provided, it comprises the end plate that is separately positioned on described liquid stream battery stack both sides, be separately positioned on the locking frame in the described end plate outside, be fastenedly connected the clamping screw and the locking nut of described locking frame, wherein on described locking frame, be formed with screwed hole, described clamping screw passes described screwed hole, described locking nut is screwed in the end of described clamping screw, it is characterized in that, the side towards described locking frame of described end plate is provided with a plurality of first keepers, described locking frame is provided with a plurality of second keepers corresponding to described first keeper, the position of described first keeper and described second keeper is corresponding to the periphery of described liquid stream battery stack electrolyte inside liquid flow frame, and is equipped with elastic component between described first keeper and described second keeper.
Preferably, described elastic component is the vulcanie post or the metal coil springs of cylindrical shape.
As a kind of preferred version, described first keeper is first recess, and described second keeper is second recess, and described elastic component is assemblied in described first recess and described second recess.
Preferably, the internal diameter basically identical of described first recess and second recess.And the diameter of described elastic component is equal to or slightly less than the internal diameter of described first recess and second recess.
Preferably, the length of described elastic component is greater than the recessed degree of depth sum of described first recess and described second recess, be not more than two times of recessed degree of depth sum of described first recess and described second recess simultaneously, be h1+h2＜L≤2 (h1+h2), wherein: L is the length of described elastic component, h1 is the recessed degree of depth of described first recess, and h2 is the recessed degree of depth of described second recess.
More preferably, the pass between the recessed degree of depth of the recessed degree of depth of the length of described elastic component and described first recess and described second recess is: L=1.5 (h1+h2).
Preferably, the recessed deep equality of the recessed degree of depth of described first recess and described second recess.
As another kind of preferred version, described first keeper is a recess and described second keeper is a protuberance, and perhaps described first keeper is a protuberance and described second keeper is a recess, and described elastic component is assemblied between described recess and the described protuberance.
Preferably, the external diameter basically identical of described protuberance is in the internal diameter of described recess.And the diameter of described elastic component is equal to or slightly less than the internal diameter of described recess.
Preferably, the protrusion length sum of the length of described elastic component and described protuberance is not more than two times of the recessed degree of depth of described recess simultaneously greater than the recessed degree of depth of described recess, be h＜L+T≤2h, wherein: L is the length of described elastic component, T is the protrusion length of described protuberance, and h is the recessed degree of depth of described recess.
More preferably, the pass between the recessed degree of depth of the protrusion length of the length of described elastic component, described protuberance and described recess is: L=1.5h, T=0.5h.
Preferably, also be provided with the 3rd keeper at described end plate towards the side of described locking frame central authorities, described locking frame is provided with the 4th keeper corresponding to described the 3rd keeper, the position of described the 3rd keeper and described the 4th keeper is corresponding to the central authorities of described liquid stream battery stack electrolyte inside liquid flow frame, and also is equipped with described elastic component between described the 3rd keeper and described the 4th keeper.
Preferably, described locking frame has the grating structure that is made of horizontal stripe and vertical bar, and described screwed hole preferably is formed on the two ends of described vertical bar.
Preferably, the material of described locking frame is a metal.
Preferably, four of described end plate bights are respectively arranged with anodal electrolyte entrance, anodal electrolyte outlet, negative pole electrolyte entrance and negative pole electrolyte outlet.
Preferably, the material of described end plate is metal or high molecular synthetic material.
The invention has the beneficial effects as follows:
The first, in the locking device of liquid stream battery stack of the present invention, the thrust of locking liquid stream battery stack is produced by clamping screw and locking nut, and is delivered to the locking frame, then is delivered to end plate via elastic component from the locking frame, and finally is delivered to liquid stream battery stack.Because first keeper on the end plate and and then the locking frame on the position of second keeper just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame, like this, the thrust stress point is evenly distributed on the periphery of electrolyte liquid flow frame in the liquid stream battery stack, thereby utilize locking device of the present invention can guarantee to need most the excellent sealing that seals the electrolyte liquid flow frame that compresses, can guarantee in the liquid stream battery stack that the electrolyte liquid flow frame of each monocell is subjected to average thrust and produces buckling deformation to avoid the electrolyte liquid flow frame because of stressed, thereby guarantee to need most the sealing locking that seals the electrolyte liquid flow frame that compresses, fundamentally avoid the smooth and uneven problem that flows of solution leakage problem and electrolyte flow.Simultaneously, under the effect of the thrust that clamping screw and locking nut produce, be assemblied in the elastic component compression between first keeper and second keeper, this compression of elastic component is automatic setting by the interaction of clamping screw and locking nut, need not artificial adjustment, thereby can provide lasting, stable clamping action liquid stream battery stack.
Second, in the locking device of liquid stream battery stack of the present invention, produce and can make naturally that via the thrust that locking frame, elastic component are delivered to end plate the integral planar of end plate compresses to liquid stream battery stack by clamping screw and locking nut, like this, the suffered thrust of liquid stream battery stack keeps evenly on entire cell heap plane, thereby avoids the not smooth and uneven problem that flows of electrolyte flow.Simultaneously, under the situation that is provided with the 3rd keeper and the 4th keeper, help more to make the integral planar of end plate compress to liquid stream battery stack by the effect of thrust, thereby make the suffered thrust of liquid stream battery stack keep evenly, avoid the not smooth and uneven problem that flows of electrolyte flow on entire cell heap plane.
The 3rd, in the locking device of liquid stream battery stack of the present invention, end plate and locking frame are respectively arranged with first keeper and second keeper of mutual correspondence, like this by above-mentioned first keeper and second keeper and be assemblied in first keeper and second keeper between elastic component, can prevent the slide relative of each parts in the liquid stream battery stack conscientiously, thereby avoid the problem of the smooth even leakage of electrolyte flow, thereby realize the positiver sealing and the locking of liquid stream battery stack.
Description of drawings
Fig. 1 a and 1b illustrate the principle schematic of all-vanadium flow battery;
Fig. 2 illustrates the structural representation of all-vanadium flow battery;
Fig. 3 schematically shows the existing liquid stream battery stack locking device of locking by pressure at two ends;
Fig. 4 schematically shows the another kind of structure of the existing liquid stream battery stack locking device of locking by pressure at two ends;
Fig. 5 a illustrates the schematic perspective view of the liquid stream battery stack that is equipped with locking device of the present invention;
Fig. 5 b is the view that is equipped with the liquid stream battery stack of locking device of the present invention when direction shown in the arrow A is observed in Fig. 5 a;
Fig. 6 is the amplification view of the part that indicated by B among Fig. 5 b, and the primary structure of the locking device of first embodiment of the invention is shown;
Fig. 6 a illustrates the plane graph of end plate of the part of the locking device that constitutes first embodiment of the invention;
Fig. 6 b is the sectional view along C1-C1 among Fig. 6 a;
Fig. 6 c illustrates the plane graph of locking frame of the part of the locking device that constitutes first embodiment of the invention;
Fig. 6 d is the end view of the locking frame shown in Fig. 6 c;
Fig. 6 e illustrates the schematic perspective view of elastic component of the part of the locking device that constitutes first embodiment of the invention;
Fig. 7 is the amplification view of the part that indicated by B among Fig. 5 b, and the primary structure of the locking device of second embodiment of the invention is shown;
Fig. 7 a illustrates the plane graph of end plate of the part of the locking device that constitutes second embodiment of the invention;
Fig. 7 b is the sectional view along C2-C2 among Fig. 7 a;
Fig. 7 c illustrates the plane graph of locking frame of the part of the locking device that constitutes second embodiment of the invention;
Fig. 7 d is the end view of the locking frame shown in Fig. 7 c;
Fig. 7 e illustrates the schematic perspective view of elastic component of the part of the locking device that constitutes second embodiment of the invention;
Fig. 8 is the amplification view of the part that indicated by B among Fig. 5 b, and the primary structure of the locking device of third embodiment of the invention is shown;
Fig. 8 a illustrates the plane graph of end plate of the part of the locking device that constitutes third embodiment of the invention;
Fig. 8 b is the sectional view along C3-C3 among Fig. 8 a;
Fig. 8 c illustrates the plane graph of locking frame of the part of the locking device that constitutes third embodiment of the invention;
Fig. 8 d is the end view of the locking frame shown in Fig. 8 c;
Fig. 8 e illustrates the schematic perspective view of elastic component of the part of the locking device that constitutes third embodiment of the invention;
Fig. 9 is illustrated in the actual loading distribution schematic diagram of liquid stream battery stack electrolyte inside liquid flow frame under the situation that adopts locking device of the present invention; And
Figure 10 a to Figure 10 e schematically shows that other optional keepers are provided with pattern on the end plate.
Embodiment
Describe the locking device of liquid stream battery stack of the present invention in detail below in conjunction with accompanying drawing.
Fig. 5 a is the schematic perspective view that is equipped with the liquid stream battery stack of locking device of the present invention, and Fig. 5 b is the view that is equipped with the liquid stream battery stack of locking device of the present invention when direction shown in the arrow A is observed in Fig. 5 a.Shown in Fig. 5 a, 5b, liquid stream battery stack 1 is in series by a plurality of monocells, and the structure of each monocell is being illustrated above with reference to Fig. 2, repeats no more here.The both sides of liquid stream battery stack 1 are provided with end plate 2, in end plate 2 arranged outside locking frame 3 are arranged, and the locking frame 3 of liquid stream battery stack 1 both sides is fastenedly connected by clamping screw 4 and locking nut 5.Be respectively arranged with the keeper (not shown among Fig. 5 a, the 5b, as hereinafter will to describe in detail) of mutual correspondence on end plate 2 and the locking frame 3, between above-mentioned keeper, be provided with a plurality of elastic components 6.Above-mentioned end plate 2, locking frame 3, clamping screw 4, locking nut 5, keeper and elastic component 6 have constituted the locking device of liquid stream battery stack of the present invention.
First embodiment
Describe the locking device of the liquid stream battery stack of first embodiment of the invention in detail below in conjunction with Fig. 6 and Fig. 6 a-6e.
As shown in Figure 6 and in conjunction with Fig. 5 b, the primary structure of the locking device of first embodiment of the invention comprises: be separately positioned on liquid stream battery stack 1 both sides end plate 2, be separately positioned on end plate 2 outsides locking frame 3, be fastenedly connected the clamping screw 4 and the locking nut 5 of locking frame 3.In addition, the side towards locking frame 3 of end plate 2 is provided with a plurality of first keepers 25, locking frame 3 is provided with a plurality of second keepers 33 corresponding to first keeper 25, the position of first keeper 25 and second keeper 33 is corresponding to the periphery of liquid stream battery stack 1 electrolyte inside liquid flow frame, and is equipped with elastic component 6 between first keeper 25 and second keeper 33.
Shown in Fig. 6 a and 6b, end plate 2 is as general as a tabular plane body, and its material can be metal, for example stainless steel, aluminium alloy etc.; Also can be high molecular synthetic material, for example polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP) etc.Four bights of end plate 2 are respectively arranged with anodal electrolyte entrance 21, anodal electrolyte outlet 22, negative pole electrolyte entrance 23 and negative pole electrolyte outlet 24.Anodal electrolyte flows into the anode chamber of liquid stream battery stacks 1 from anodal electrolyte storage tank through anodal electrolyte entrance 21, and the electrolyte of finishing reaction in anode chamber flows out and turns back to anodal electrolyte storage tank from anodal electrolyte outlet 22.Similarly, negative pole electrolyte flows into the negative pole chamber of liquid stream battery stacks 1 from negative pole electrolyte storage tank through negative pole electrolyte entrance 23, and the electrolyte of finishing reaction in the negative pole chamber flows out and turns back to negative pole electrolyte storage tank from negative pole electrolyte outlet 24.
Side away from liquid stream battery stack 1 of end plate 2---be end plate 2 towards locking frame 3 the side on be formed with a plurality of first keepers 25, described in the present embodiment a plurality of first keeper 25 for example is eight first recesses, and the position of these first keepers is just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame.For will be for the liquid stream battery stack of locking device locking, because the size of the electrolyte liquid flow frame in it is known, like this in position that design and processing are very easy to guarantee first keeper during end plate just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame, this knows in right and wrong Changshu to those skilled in the art, therefore launches here to describe in detail no longer at this point.
Shown in Fig. 6 c and 6d, locking frame 3 can have Any shape and structure, and for example the grating structure that is made of horizontal stripe and vertical bar is locked frame 3 in the present embodiment and comprised three vertical bars 31 and a horizontal stripe 32.Locking frame 3 can be made by any material with certain strength and stiffness, but preferably uses metal material.Be formed with a plurality of second keepers 33 corresponding to first keeper 25 of end plate 2 on the locking frame 3, described in the present embodiment a plurality of second keepers 33 for example are eight second recesses that correspond respectively to first recess.For purpose easy to process, the internal diameter basically identical of first recess and second recess.Because it is as indicated above, the position of first keeper of end plate 2 is just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame, therefore corresponding to the position of these second keepers of first keeper of end plate 2 also just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame, this knows in right and wrong Changshu to those skilled in the art, therefore launches here to describe in detail no longer at this point.In the present embodiment, above-mentioned eight second keepers are formed in the vertical bar 31 and horizontal stripe 32 places of locking frame 3.Also be formed with a plurality of screwed holes 34 that pass for clamping screw 4 on the locking frame 3, in the present embodiment, have the two ends that six screwed holes 34 are formed on vertical bar 31.
Shown in Fig. 6 e, elastic component 6 can be made by any elastomeric material, for example rubber, spring etc.Consider stability, preferably select for use the vulcanie post of cylindrical shape or metal coil springs as elastic component 6 at locking elastic component during battery pile.Referring to Fig. 6, elastic component 6 be assemblied in first keeper 25 (first recess) of end plate 2 and second keeper 33 (second recess) of locking frame 3 in.For this reason, the diameter D of elastic component 6 is equal to or slightly less than the internal diameter of first recess and second recess.The length L of elastic component 6 is greater than the recessed degree of depth sum of first recess and second recess, i.e. L＞h1+h2.In addition, consider the stability of locking elastic component during battery pile, the length L of elastic component 6 preferably is not more than two times of recessed degree of depth sum of first recess and second recess, i.e. L≤2 (h1+h2).Therefore, the present invention proposes, and the pass of the recessed degree of depth h1 of the length L of elastic component 6 and first recess and the recessed degree of depth h2 of second recess is: h1+h2＜L≤2 (h1+h2).As a kind of preferred version, advise L=1.5 (h1+h2) in the present invention.In addition, although the recessed degree of depth h2 of the recessed degree of depth h1 of first recess and second recess can be different, preferably the recessed degree of depth unanimity of first recess is in the recessed degree of depth of second recess, i.e. h1=h2=h.In the case, the pass of the recessed degree of depth h of the length L of elastic component 6 and first recess (or second recess) is: 2h＜L≤4h, preferably, and L=3h, promptly the length L of elastic component 6 preferably equals three times of the recessed degree of depth of first recess or second recess.
Locking device according to the liquid stream battery stack of first embodiment of the invention, when assembling liquid stream battery stack 1, at first the mode sequential parallel of each monocell with connected in electrical series stacked, then end plate 2 is placed on liquid stream battery stack 1 both sides respectively, one end of elastic component 6 is packed in first keeper 25 (first recess) of end plate 2, locking frame 3 is installed then, making the other end of elastic component 6 pack into locks in corresponding second keeper 33 (second recess) of frame 3, clamping screw 4 passed in the screwed hole 34 at vertical bar 31 two ends of locking frame 3, at last locking nut 5 is screwed in the end of clamping screw 4 thereafter.Be engaged in the locking nut 5 of clamping screw 4 by adjustment, can make things convenient for the locking pressure of controllably adjusting liquid stream battery stack 1.
Second embodiment
Locking device below in conjunction with the liquid stream battery stack of Fig. 7 and Fig. 7 a-7e explanation second embodiment of the invention.
The locking device of second embodiment locking device with first embodiment basically is identical, therefore omits the detailed description at identical content here.The difference of the locking device of the locking device of second embodiment and first embodiment only is to be separately positioned on first keeper 25 on end plate 2 and the locking frame 3 and the not isostructure of second keeper 33.Particularly, the side away from liquid stream battery stack 1 of end plate 2---be end plate 2 on the side of locking frame 3, be formed with a plurality of recesses, these recesses are as first keeper 25 in the locking device of second embodiment.First keeper 25 for example is eight recesses in the present embodiment, and the position of these recesses is equally just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame.Be formed with a plurality of second keepers 33 on the locking frame 3 corresponding to first keeper 25 of end plate 2, above-mentioned second keeper 33 in the locking device of second embodiment adopts the form of protuberances, and the position of these protuberances is equally also just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame.In the present embodiment, be formed with eight protuberances that are used as second keeper 33 at the vertical bar 31 and horizontal stripe 32 places of locking frame 3.For purpose easy to process, the external diameter basically identical of the protuberance of locking frame 3 is in the internal diameter of the recess of end plate 2.Be equipped with elastic component 6 between second keeper 33 of first keeper 25 of end plate 2 and locking frame 3, promptly an end of elastic component 6 is installed in first keeper 25 of end plate 2, and second keeper 33 of locking frame 3 is resisted against the other end of elastic component 6.For this reason, the diameter D of elastic component 6 is equal to or slightly less than the internal diameter of first keeper 25 (recess) of end plate 2.The protrusion length T sum of second keeper 33 (protuberance) of the length L of elastic component 6 and locking frame 3 is greater than the recessed degree of depth h of first keeper 25, i.e. L+T＞h.In addition, consider the stability of locking elastic component during battery pile, the protrusion length T sum of the length L of elastic component 6 and second keeper 33 preferably is not more than two times of recessed degree of depth h of first keeper 25, i.e. L+T≤2h.Therefore, in the present embodiment, the pass between the protrusion length T of the length L of elastic component 6, second keeper 33 and the recessed degree of depth h of first keeper 25 is: h＜L+T≤2h.As a kind of preferred version, suggestion L=1.5h, T=0.5h.
Locking device according to the liquid stream battery stack of second embodiment of the invention, when assembling liquid stream battery stack 1, at first the mode sequential parallel of each monocell with connected in electrical series stacked, then end plate 2 is placed on liquid stream battery stack 1 both sides respectively, elastic component 6 insertions are installed in first keeper 25 (recess) of end plate 2, second keeper 33 (protuberance) that to lock frame 3 then is resisted against the end of elastic component 6, clamping screw 4 passed in the screwed hole 34 at vertical bar 31 two ends of locking frame 3, at last locking nut 5 is screwed in the end of clamping screw 4 thereafter.Be engaged in the locking nut 5 of clamping screw 4 by adjustment, can make things convenient for the locking pressure of controllably adjusting liquid stream battery stack 1.
The 3rd embodiment
Locking device below in conjunction with the liquid stream battery stack of Fig. 8 and Fig. 8 a-8e explanation third embodiment of the invention.
The locking device of the 3rd embodiment locking device with second embodiment basically is identical, therefore omits the detailed description at identical content here.The difference of the locking device of the locking device of the 3rd embodiment and second embodiment only is first keeper 25 of the second embodiment end plates 2 is changed with the structure of second keeper 33 of locking frame 3.Particularly, the side away from liquid stream battery stack 1 of end plate 2---be end plate 2 on the side of locking frame 3, be formed with a plurality of protuberances, these protuberances are as first keeper 25 in the locking device of the 3rd embodiment.First keeper 25 for example is eight protuberances in the present embodiment, and the position of these protuberances is equally just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame.Be formed with a plurality of second keepers 33 on the locking frame 3 corresponding to first keeper 25 of end plate 2, above-mentioned second keeper 33 in the locking device of the 3rd embodiment adopts the form of recesses, and the position of these recesses is equally also just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame.In the present embodiment, be formed with eight recesses that are used as second keeper 33 at the vertical bar 31 and horizontal stripe 32 places of locking frame 3.For purpose easy to process, the external diameter basically identical of the protuberance of end plate 2 is in the internal diameter of the recess of locking frame 3.Be equipped with elastic component 6 between second keeper 33 of first keeper 25 of end plate 2 and locking frame 3, promptly an end of elastic component 6 is installed in second keeper 33 of locking frame 3, and first keeper 25 of end plate 2 is resisted against the other end of elastic component 6.For this reason, the diameter D of elastic component 6 is equal to or slightly less than the internal diameter of second keeper 33 (recess) of locking frame 3.The protrusion length T sum of first keeper 25 (protuberance) of the length L of elastic component 6 and end plate 2 is greater than the recessed degree of depth h of second keeper 33, i.e. L+T＞h.In addition, consider the stability of locking elastic component during battery pile, the protrusion length T sum of the length L of elastic component 6 and first keeper 25 preferably is not more than two times of recessed degree of depth h of second keeper 33, i.e. L+T≤2h.Therefore, in the present embodiment, the pass between the protrusion length T of the length L of elastic component 6, first keeper 25 and the recessed degree of depth h of second keeper 33 is: h＜L+T≤2h.As a kind of preferred version, suggestion L=1.5h, T=0.5h.
Locking device according to the liquid stream battery stack of third embodiment of the invention, when assembling liquid stream battery stack 1, at first the mode sequential parallel of each monocell with connected in electrical series stacked, then end plate 2 is placed on liquid stream battery stack 1 both sides respectively, elastic component 6 is inserted in second keeper 33 (recess) that is installed in locking frame 3, then first keeper 25 (protuberance) of end plate 2 is resisted against the end of elastic component 6, clamping screw 4 passed in the screwed hole 34 at vertical bar 31 two ends of locking frame 3, at last locking nut 5 is screwed in the end of clamping screw 4 thereafter.Be engaged in the locking nut 5 of clamping screw 4 by adjustment, can make things convenient for the locking pressure of controllably adjusting liquid stream battery stack 1.
In the locking device of the liquid stream battery stack of the present invention such as above each embodiment, the thrust of locking liquid stream battery stack produces and is delivered to locking frame 3 by clamping screw 4 and locking nut 5, then be delivered to end plate 2 from locking frame 3, and finally be delivered to liquid stream battery stack 1 via elastic component 6.As mentioned before, first keeper 25 of end plate 2 and and then the position of second keeper 33 of locking frame 3 just in time corresponding to the periphery of liquid stream battery stack electrolyte inside liquid flow frame, like this, the thrust stress point is evenly distributed on the periphery of electrolyte liquid flow frame in the liquid stream battery stack 1, the actual loading distribution map of the liquid stream battery stack electrolyte inside liquid flow frame that schematically shows as Fig. 9, wherein
The stress point position of expression electrolyte liquid flow frame.Like this, utilize locking device of the present invention, can guarantee to need most the excellent sealing that seals the electrolyte liquid flow frame that compresses, can guarantee in the liquid stream battery stack that thereby the electrolyte liquid flow frame of each monocell is subjected to average thrust and avoids the electrolyte liquid flow frame to produce buckling deformation because of stressed, thereby guarantee to need most the sealing locking that seals the electrolyte liquid flow frame that compresses, fundamentally avoid the smooth and uneven problem that flows of solution leakage problem and electrolyte flow.
And, in the locking device of the liquid stream battery stack of the present invention such as above each embodiment, although because the existence of elastic component 6, the thrust stress point is evenly distributed on the periphery of electrolyte liquid flow frame in the liquid stream battery stack 1, but, on the other hand, because end plate 2 is the tabular plane body of a metal or high molecular synthetic material, thereby produce and via locking frame 3 by clamping screw 4 and locking nut 5, the thrust that elastic component 6 is delivered to end plate 2 can make the integral planar of end plate 2 compress to liquid stream battery stack 1 naturally, like this, liquid stream battery stack 1 suffered thrust keeps evenly on entire cell heap plane, thereby avoids the not smooth and uneven problem that flows of electrolyte flow.In addition, in order to guarantee that further liquid stream battery stack 1 suffered thrust keeps evenly on entire cell heap plane, referring to Figure 10 a, 10c and 10e, can also the 3rd keeper be set in the side central authorities towards locking frame 3 of end plate 2, correspondingly, the 4th keeper corresponding to the 3rd keeper is set on the locking frame, and the position of the 3rd keeper and the 4th keeper is corresponding to the central authorities of liquid stream battery stack electrolyte inside liquid flow frame, and elastic component is assemblied between the 3rd keeper and the 4th keeper equally.Here, be similar to above-mentioned first and second embodiment, adopt at the 3rd keeper under the situation of form of recess, the 4th keeper can adopt the form of corresponding recess or protuberance.Perhaps, be similar to above-mentioned the 3rd embodiment, adopt at the 3rd keeper under the situation of form of protuberance, the 4th keeper can adopt the form of corresponding recess.
In addition, in the locking device of the liquid stream battery stack of the present invention such as above each embodiment, end plate 2 and locking frame 3 are respectively arranged with first keeper 25 and second keeper 33 of mutual correspondence at least, like this by first keeper 25 and second keeper 33 and be assemblied in first keeper 25 and second keeper 33 between elastic component 6 can prevent the slide relative of each parts in the liquid stream battery stack conscientiously, thereby avoid the problem of the smooth even leakage of electrolyte flow, thereby realize the positiver sealing and the locking of liquid stream battery stack.
Self-evident, according to practical situations, can adjust the structure of the end plate 2 and first keeper 25 and the locking frame 3 and second keeper 33.For example, schematically shown among Figure 10 a to 10e that other optional keepers are provided with pattern on the end plate 2, other optional keepers are provided with pattern and corresponding to the keeper on the end plate 2 pattern are set on the locking frame 3, therefore are not shown specifically here.The difference of the execution mode shown in the execution mode shown in Figure 10 a and Fig. 6 a, 7a, the 8a is, the side central authorities towards the locking frame at end plate are provided with the 3rd keeper, correspondingly, the 4th keeper (not shown) corresponding to the 3rd keeper is set on the locking frame, the position of the 3rd keeper and the 4th keeper is corresponding to the central authorities of liquid stream battery stack electrolyte inside liquid flow frame, elastic component is assemblied between the 3rd keeper and the 4th keeper equally, and this has guaranteed that further liquid stream battery stack 1 suffered thrust keeps evenly on entire cell heap plane.In addition, for the less liquid stream battery stack of size, then can select the keeper as shown in Figure 10 b to Figure 10 e that pattern is set.
Although abovely describe the present invention in detail, to those skilled in the art, under the teaching of this paper, can make various modifications and distortion, and not break away from the spirit and scope of the invention the present invention with reference to embodiment.
Claims (10)
1. the locking device of a liquid stream battery stack, it comprises the end plate that is separately positioned on described liquid stream battery stack both sides, be separately positioned on the locking frame in the described end plate outside, be fastenedly connected the clamping screw and the locking nut of described locking frame, wherein on described locking frame, be formed with screwed hole, described clamping screw passes described screwed hole, described locking nut is screwed in the end of described clamping screw, it is characterized in that, the side towards described locking frame of described end plate is provided with a plurality of first keepers, described locking frame is provided with a plurality of second keepers corresponding to described first keeper, the position of described first keeper and described second keeper is corresponding to the periphery of described liquid stream battery stack electrolyte inside liquid flow frame, and is equipped with elastic component between described first keeper and described second keeper.
2. the locking device of liquid stream battery stack according to claim 1 is characterized in that, described elastic component is the vulcanie post or the metal coil springs of cylindrical shape.
3. the locking device of liquid stream battery stack according to claim 1 is characterized in that, described first keeper is first recess, and described second keeper is second recess, and described elastic component is assemblied in described first recess and described second recess.
4. the locking device of liquid stream battery stack according to claim 3 is characterized in that, described first recess is consistent with the internal diameter of second recess, and the diameter of described elastic component is equal to or less than the internal diameter of described first recess and second recess.
5. the locking device of liquid stream battery stack according to claim 3, it is characterized in that, the length of described elastic component is greater than the recessed degree of depth sum of described first recess and described second recess, be not more than two times of recessed degree of depth sum of described first recess and described second recess simultaneously, be h1+h2＜L≤2 (h1+h2), wherein: L is the length of described elastic component, and h1 is the recessed degree of depth of described first recess, and h2 is the recessed degree of depth of described second recess.
6. the locking device of liquid stream battery stack according to claim 1, it is characterized in that, described first keeper is a recess and described second keeper is a protuberance, perhaps described first keeper is a protuberance and described second keeper is a recess, and described elastic component is assemblied between described recess and the described protuberance.
7. the locking device of liquid stream battery stack according to claim 6 is characterized in that, the external diameter unanimity of described protuberance is in the internal diameter of described recess, and the diameter of described elastic component is equal to or less than the internal diameter of described recess.
8. the locking device of liquid stream battery stack according to claim 6, it is characterized in that, the protrusion length sum of the length of described elastic component and described protuberance is not more than two times of the recessed degree of depth of described recess simultaneously greater than the recessed degree of depth of described recess, be h＜L+T≤2h, wherein: L is the length of described elastic component, T is the protrusion length of described protuberance, and h is the recessed degree of depth of described recess.
9. the locking device of liquid stream battery stack according to claim 1 is characterized in that, described locking frame has the grating structure that is made of horizontal stripe and vertical bar, and described screwed hole is formed on the two ends of described vertical bar.
10. according to the locking device of each described liquid stream battery stack in the claim 1 to 9, it is characterized in that, also be provided with the 3rd keeper at described end plate towards the side of described locking frame central authorities, described locking frame is provided with the 4th keeper corresponding to described the 3rd keeper, the position of described the 3rd keeper and described the 4th keeper is corresponding to the central authorities of described liquid stream battery stack electrolyte inside liquid flow frame, and also is equipped with described elastic component between described the 3rd keeper and described the 4th keeper.
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| CN2010101210437A CN102195009A (en) | 2010-03-10 | 2010-03-10 | Locking device for liquid stream cell stack |
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| CN2010101210437A CN102195009A (en) | 2010-03-10 | 2010-03-10 | Locking device for liquid stream cell stack |
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| CN104409761A (en) * | 2014-11-28 | 2015-03-11 | 中国科学院金属研究所 | Novel flow cell stack and pressing method thereof |
| CN110767929A (en) * | 2019-12-26 | 2020-02-07 | 武汉众宇动力系统科技有限公司 | Bundling device for fuel cell stack |
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| CN114069007A (en) * | 2021-11-17 | 2022-02-18 | 山西国润储能科技有限公司 | Automatic vanadium battery pile assembly production equipment and process |
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Application publication date: 20110921 |