CN109888298A - A kind of S type battery based on bipolar plates - Google Patents
A kind of S type battery based on bipolar plates Download PDFInfo
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- CN109888298A CN109888298A CN201910196075.4A CN201910196075A CN109888298A CN 109888298 A CN109888298 A CN 109888298A CN 201910196075 A CN201910196075 A CN 201910196075A CN 109888298 A CN109888298 A CN 109888298A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The present invention provides a kind of S type battery based on bipolar plates, the S type battery is to be stacked with to form multiple and different bipolar plates stackings based on several bipolar plates, and multiple bipolar plates is stacked be electrically connected in a manner of specific periodic arrangement to which combination of sets becomes a battery again, above-mentioned stacked combination mode can be effectively prevented from battery, and there is a situation where internal short-circuits, and can also improve the convenience of the subsequent connecting wiring of battery；In addition, above-mentioned stacked combination mode can also effectively reduce size of the S type battery on different dimensions, and finally realize being effectively compressed for S type battery volume, to improve the integration of compact degree of S type battery.
Description
Technical field
The present invention relates to the technical field of electrochemical cell, in particular to a kind of S type battery based on bipolar plates.
Background technique
Electrochemical cell, especially lead-acid accumulator, energy can be stored by being widely used in its in auto lamp different field
And the energy is conveyed to target object in the form of electric energy.Lead-acid accumulator is mainly electrolysed in plumbic acid electrode and dilute sulfuric acid etc.
Electrochemical reaction occurs between matter, to generate transmission electric current.Usually, single bipolar plates and electrolysis Solution-Phase Combinatorial can
Electrochemical reaction occurs and generates electric current, theoretically single bipolar plates can be used as electrochemical cell, but due to single bipolar
Plate is impregnated encapsulation by manufacture craft and electrolyte and is influenced, and can not be made with biggish area size, and based on bipolar
The operating current and operating voltage of the electrochemical cell of plate are the relationship being positively correlated with the area size of bipolar plates, i.e. bipolar plates
Area size it is bigger, the operating current and operating voltage of corresponding electrochemical cell are also bigger, thus be based on single bipolar plates
Electrochemical cell operating current and operating voltage also will receive limitation, be not particularly suited for needing larger operating current and work
Make in the occasion of voltage.
Since in practical application, the supply object of electrochemical cell usually requires biggish supply current and confession
Piezoelectric voltage, it is clear that the electrochemical cell based on single bipolar plates is not able to satisfy supply object to big supply current and supply voltage
Demand.In order to make the electrochemical cell based on bipolar plates be capable of providing supply current and the supply voltage of different numerical value to meet
The different degrees of demand of supply object, the prior art by by several bipolar plates central combinations into same battery,
Different bipolar plates in several bipolar plates are attached by specific stack manner, so that several bipolar plates
Electrochemical reaction can occur simultaneously to form biggish supply current and supply voltage.But it is directed to several bipolar plates at present
Combination still remain combination stacked structure is complicated and the problems such as subsequent connecting wiring inconvenience, this is all serious to restrict
The charge-discharge performance and job security of electrochemical cell based on bipolar plates, and it is unfavorable for the electrochemistry electricity based on bipolar plates
The popularization and application in pond.
Summary of the invention
In the battery formed based on several bipolar plate combinations, the existing combination stacked mode for several bipolar plates
Due to haveing the defects that Joint failure easily occurs on connection terminal, this brings restriction to the normal work of battery；In addition,
The combination stacked mode of several existing bipolar plates can also have geometrically current density limitation unevenly distributed, this makes
It obtains in several bipolar plates of stacking, for the region far from terminal compared to close to the region of terminal, electrolyte is caused to corrode journey
Degree can be higher, and above-mentioned the case where referring to all is unfavorable for improving the charge and discharge for stacking the battery to be formed based on several bipolar plate combinations
Performance and the working life for extending battery, and all to there is volume excessive for the battery that is formed of several bipolar plates of existing combination stacked
The shortcomings that, this is all unfavorable for battery and further realizes integration of compact.
In view of the defects existing in the prior art, the present invention provides a kind of S type battery based on bipolar plates, which is
It is stacked with to form multiple and different bipolar plates stackings based on several bipolar plates, and again stacks multiple bipolar plates with specific
Periodic arrangement mode be electrically connected to combination of sets become a battery；Pass through above-mentioned stacked combination mode, the S type electricity
Pond can guarantee that its positive terminal and negative pole end are located in two different sides of battery, this can not only be effectively prevented from electricity
There is a situation where internal short-circuits in pond, and can also improve the convenience of the subsequent connecting wiring of battery；In addition, the S type battery uses
It folds the mode of arrangement to stack to be electrically connected multiple bipolar plates, this mode for folding arrangement can effectively reduce S type battery
Size on different dimensions, and finally realize being effectively compressed for S type battery volume, to improve the integration of compact of S type battery
Change degree.
The present invention provides a kind of S type battery based on bipolar plates, and the S type battery includes the first bipolar plates stacking, second
Bipolar plates stacking, third bipolar plates stacking, the first tab, the second tab, positive terminal and negative terminal, first bipolar plates
It stacks, second bipolar plates stack and third bipolar plates stacking from top to bottom stacks gradually setting, it is characterised in that:
The first bipolar plates stacking, second bipolar plates stacking and third bipolar plates stacking all have identical
Stacked structure, the stacked structure are by bipolar plates A, bipolar plates B, negative unipolar terminal board A1, negative unipolar terminal board A2, positive monopole
The extreme daughter board B2 of terminal board B1, original is stacked and is formed；
First bipolar plates are stacked, corresponding negative unipolar terminal board A1 and negative unipolar terminal board A2 with it is described
Negative terminal electrical connection, the corresponding extreme daughter board B1 and extreme daughter board B2 of original of original are electrically connected with second tab；
For second bipolar plates stack, the corresponding extreme daughter board B1 and extreme daughter board B2 of original of original with it is described
The electrical connection of first tab, corresponding negative unipolar terminal board A1 and negative unipolar terminal board A2 are electrically connected with second tab；
The third bipolar plates are stacked, corresponding negative unipolar terminal board A1 and negative unipolar terminal board A2 with it is described
The electrical connection of first tab, the corresponding extreme daughter board B1 and extreme daughter board B2 of original of original are electrically connected with the positive terminal；
Further, in the stacked structure, the positive pole zone part of the bipolar plates A, the negative unipolar terminal board A1,
The positive pole zone part of the bipolar plates B and the negative unipolar terminal board A2 are from top to bottom stacked gradually, and the bipolar plates A
Negative regions part, the extreme daughter board B1 of the original, the negative regions part of the bipolar plates B and the extreme daughter board of the original
B2 is from top to bottom stacked gradually；
Further, the bipolar plates A and the bipolar plates B bipolar plate structure having the same, the bipolar plate structure are equal
Including an aperture plate, first part's region coating of the aperture plate has positive electrode paste to form the positive pole zone part, the grid
The second part region coating of net has cathode lotion to form the negative regions part, and the positive pole zone part is born with described
The region of leaving a blank formed by the Part III region of the aperture plate, the first part region are separated between going back between the part of polar region domain
The upper surface of the corresponding cathode lotion of the upper and lower surfaces of corresponding positive electrode paste and the second part region and under
Surface is all covered with diaphragm paper；
Further, first bipolar plates stack between second bipolar plates stacking, and second bipolar plates stack
Partition is equipped between third bipolar plates stacking, the partition is hard material partition；
Further, the partition includes discrete the first sub-dividing plate and the second sub-dividing plate, first sub-dividing plate and described
Second sub-dividing plate is located at the negative unipolar terminal board A1, negative unipolar terminal board A2, the extreme daughter board B1 of original or positive monopole
On the corresponding area of space of terminal board B2；
Further, the extreme daughter board of the original includes aperture plate, and the aperture plate includes adjacent first grid web area and second
Aperture plate region, the first grid web area are coated with positive electrode paste to form positive pole zone, and the second gate web area stays for one
The upper and lower surfaces of empty region, the corresponding positive electrode paste of the positive pole zone are all covered with diaphragm paper；
Further, the negative unipolar terminal board includes aperture plate, and the aperture plate includes adjacent third aperture plate region and the 4th
Aperture plate region, the third aperture plate region coating have cathode lotion to form negative regions, and the 4th aperture plate region is stayed for one
The upper and lower surfaces of empty region, the corresponding cathode lotion in the negative regions are all covered with diaphragm paper；
Further, in the stacked structure, for bipolar plates A, bipolar plates B, negative unipolar terminal board A1, negative unipolar terminal
The extreme daughter board B1 of plate A2, original, the extreme daughter board B2 of original, what is be stacked with is any between the two equipped with diaphragm, and the diaphragm is
Flexible diaphragm, the flexible diaphragm can deformation occurs in the thickness direction thereof.
The present invention also provides a kind of composite S type battery, the composite S type battery includes multiple S type batteries, and feature exists
In: multiple S type batteries are stacked gradually along the stacking direction of the stacked structure；
Further, the composite S type battery further includes a pair of of compressing member, and the pair of compressing member is for gripping
The multiple S type batteries being stacked with.
Compared with the prior art, the S type battery of the invention based on bipolar plates will be several bipolar in a manner of folding arrangement
Sheetpile is folded to be combined connection, the S battery that this mode for folding arrangement is formed can not only guarantee the positive terminal of battery with
Negative pole end is located at the different side in two sides of battery, and to prevent battery, there is a situation where internal short-circuits, and can also improve
The convenience of the subsequent connecting wiring of battery；Further, the mode of folding arrangement can also effectively reduce S type battery not
With the size in dimension, to realize being effectively compressed for S type battery volume, to improve the integration of compact degree of S type battery.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of the S type battery based on bipolar plates provided by the invention；
Fig. 2 is the structural schematic diagram of single bipolar plates in a kind of S type battery based on bipolar plates provided by the invention；
Fig. 3 is the extreme daughter board of original and negative unipolar terminal board in a kind of S type battery based on bipolar plates provided by the invention
Respective structural schematic diagram；
Numeral mark in attached drawing is respectively: 1: the first bipolar plates stacking, 2: the second bipolar plates stacking, 3: third bipolar plates
Stacking, 4: the first tabs, 5: the second tabs, 6: positive terminal, 7: negative terminal, 8: partition, 9: diaphragm, 10: positive electrode paste,
11: cathode lotion, 12: diaphragm paper, 13: aperture plate, 14: the extreme daughter board of original, 15: negative unipolar terminal board.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It refering to fig. 1, is a kind of structural schematic diagram of the S type battery based on bipolar plates provided in an embodiment of the present invention.The S type
Battery includes that the first bipolar plates stack, the second bipolar plates stack, third bipolar plates stacking, the first tab, the second tab, positive terminal
Son and negative terminal；Wherein, first bipolar plates stacking, the second bipolar plates stacking and third bipolar plates stacking all have identical
Bipolar plates stacked structure；First bipolar plates stack, second bipolar plates stack and the third bipolar plates stack from top to bottom according to
Secondary stacking setting, and be electrically connected by the wiring that the first tab, the second tab, positive terminal and negative terminal fold arrangement formula
It connects, so that combination forms the S type battery.
First bipolar plates are stacked, the second bipolar plates stack, the stacked structure in third bipolar plates stacking, the stacking
Structure is specifically by bipolar plates A, bipolar plates B, negative unipolar terminal board A1, negative unipolar terminal board A2, the extreme daughter board B1 of original, original
Extreme daughter board B2 is stacked and is formed.It is corresponding negative with continued reference to the Fig. 1 as it can be seen that in first bipolar plates stacking
Monopole terminal board A1 and negative unipolar terminal board A2 are electrically connected with the negative terminal, the extreme daughter board B1 of corresponding original and original
Extreme daughter board B2 is electrically connected with second tab；Second bipolar plates stacking in, the corresponding extreme daughter board B1 of original and
The extreme daughter board B2 of original is electrically connected with first tab, corresponding negative unipolar terminal board A1 and negative unipolar terminal board A2 with
Second tab electrical connection；In third bipolar plates stacking, corresponding negative unipolar terminal board A1 and negative unipolar terminal board A2
It is electrically connected with first tab, the corresponding extreme daughter board B1 and extreme daughter board B2 of original of original is electrically connected with the positive terminal
It connects.As it can be seen that first bipolar plates stack, the second bipolar plates stack and third bipolar plates stacking is exactly based on above-mentioned folding arrangement formula
Wiring electric connection mode so that first bipolar plates stack, the second bipolar plates stack and third bipolar plates be stacked on along same
Direction still can be realized corresponding electrical connection in the case where stacking gradually, be obviously different from it is existing other along single direction
The mode of linear wiring electrical connection, this is conducive to S type battery and is compressed on stacking volume.
With continued reference to Fig. 1, is stacked in first bipolar plates stacking, the second bipolar plates and third bipolar plates stack corresponding heap
In stack structure, the positive pole zone part of bipolar plates A, negative unipolar terminal board A1, the positive pole zone part of bipolar plates B and should
Negative unipolar terminal board A2 is from top to bottom stacked gradually, and the negative regions part of bipolar plates A, the extreme daughter board B1 of the original,
The negative regions part of bipolar plates B and the extreme daughter board B2 of the original are from top to bottom stacked gradually.It can be seen that the stacked structure
Two different bipolar plates A and B are separated by the extreme daughter board of original and negative unipolar terminal board it is stacked, to guarantee in the heap
The partial region that electricity polarity is positive in stack structure is adjacent with the partial region that electricity polarity is negative always, to avoid the stacking
Occurs the case where internal short-circuit in structure.
In addition, in the stacked structure, bipolar plates A and bipolar plates B bipolar plate structure having the same.This is bipolar hardened
The specific internal structure of structure sees Fig. 2.As it is clear from fig. 2 that the bipolar plate structure includes positive electrode paste, cathode lotion, diaphragm
Paper and aperture plate；Wherein, which constitutes the foundation structure of the bipolar plates, which is coated in the area, first part of the aperture plate
Domain, the cathode lotion are coated in the second part region of the aperture plate, and the first part region and the second part region it
Between should between be separated with a Part III region, which can be complete by the first part region and second part region
Partition, so that the positive electrode paste on the first part region cannot directly connect with the cathode lotion on the second part region
Touching, to avoid bipolar plates short circuit occurred inside situation.Preferably, the first part region, second part region and Part III
Region is belonging respectively to the different wire-grid structure regions of the aperture plate；Preferably, which can be located at the area, first part
Between domain and the second part region, separate the first part region and second part region completely to realize.
The positive electrode paste and the cathode lotion are located at respectively right in the first part region and the second part region
In the wire-grid structure answered.Preferably, the positive electrode paste and the cathode lotion are adhered to the first part region and the second part
Inside the corresponding wire-grid structure in region；Preferably, the positive electrode paste and the cathode lotion are also covered in the area, first part
The upper and lower surfaces in domain and the corresponding wire-grid structure in second part region can prevent the area, first part in this way
Wire-grid structure in domain and second part region is exposed in dilute sulfuric acid electrolyte environment, so as to cause the wire-grid structure by dilute
The corrosion of sulfuric acid electrolyte.Preferably, the positive electrode paste 1 and the cathode lotion 2 thickness D1 having the same, and thickness D1 is big
In the thickness D2 of the aperture plate in the cross-direction, it just can guarantee that the positive electrode paste 1 and the cathode lotion 2 are being attached to the grid in this way
While web frame, upper surface and the following table of the corresponding aperture plate in the first part region 5 and the second part region 6 is completely covered
Face；Preferably, thickness D1 and thickness D2 meet following relationship 1.1*D2≤D1≤3*D2, by comparative experiments, when the D1 <
When 1.1*D2, the positive electrode paste or the cathode lotion cannot evenly and smoothly cover the upper surface of corresponding aperture plate under comprehensively
It surface and is easy so that the aperture plate is corroded by dilute sulfuric acid electrolyte, as D1 > 3*D2, the positive electrode paste and the cathode lotion
Thickness can be blocked up and cause dilute sulfuric acid electrolyte that can not be electrochemically reacted with internal lotion, thus reduce the positive electrode paste and
The chemical conversion uniformity of itself different zones of the cathode lotion.
The positive electrode paste and the cathode lotion include active material, which can be with the electrolyte such as the dilute sulfuric acid
Electrochemical reaction occurs, to generate corresponding battery current and voltage.Preferably, which is by lead oxide, sulfuric acid
Lead, sulfuric acid, several additive and water mix according to predetermined ratio and by made of special processes；Optionally, in the work
Property the corresponding original mixture of material in, weight ratio shared by lead oxide can be 50%-85%, and weight ratio shared by lead sulfate can
For 1%-15%, weight ratio shared by sulfuric acid can be 3%-8%, and weight ratio shared by several additive can be 2%-5%, water
Shared weight ratio can be 10%-30%.Preferably, the final active material obtained in the original mixture by the special process
In material, weight ratio shared by the lead sulfate will rise to 20%-40%；Preferably, it in the final active material, does not deposit substantially
In any free state sulfuric acid.Can be found by control experiment, when the lead sulfate in active material corresponding original mixture institute
When the weight ratio accounted for is greater than 15%, the content of free state sulfuric acid will rise significantly in corresponding final active material, and working as should
When lead sulfate weight ratio shared by the corresponding original mixture of active material is 1%-15%, dissociate in corresponding active material
The content of state sulfuric acid will can be neglected, since in the final active material, the content height of free state sulfuric acid be will have a direct impact on
Electrochemical reaction efficiency between positive electrode paste or the electrolyte such as cathode lotion and dilute sulfuric acid, in brief, the final activity
The content of free state sulfuric acid is lower in material, the electrochemical reaction efficiency between the positive electrode paste or cathode lotion and electrolyte
It is higher, on the contrary, the content of free state sulfuric acid is higher in the final active material, the positive electrode paste or cathode lotion and electrolysis
Electrochemical reaction efficiency between liquid is lower.As it can be seen that in the embodiment of the present invention, the corresponding original mixture of active material and final
The setting of the weight ratio shared by lead sulfate can effectively improve the electrification between electrode pastes and electrolyte in active material
Reaction efficiency is learned, so as to improve the charge-discharge performance of lead-acid accumulator.
In addition, needing when selecting and determining the material of positive electrode paste and cathode lotion in bipolar plates by alternative material
According to the conductivity of material, thermal diffusivity, stability, machinability, heat-resisting quantity, production cycle, fire prevention gas permeability and it is produced into
The different factors such as this obtain the index about these factors by experiment, and by these index values, thus obtain one it is right
The matrix Y answered
In matrix Y, bstIndex value corresponding to t kind candidate materials for s-th of index, similarly, bjnIt is
Index value corresponding to the n candidate materials of j index.In order to improve the confidence level being compared between different index values,
It needs to be standardized these index values, the corresponding formula of the standardization is as follows:
In the formula, b* stFor bstFor value corresponding after standardization,For the mean value of s-th of index, σsFor s
The variance of a index, for each bstAll corresponding b can be obtained by corresponding standardization* st, to obtain one newly
Matrix Y*.In order to obtain new matrix Y*Middle finger target correlation, needs to calculate the covariance between each index, and obtains another
One new Matrix C
Wherein, cov (bj *, bj *) it is bj *A index and bj *Covariance between a index, j be Matrix C line number with
The value of columns, the covariance between each index is intended to indicate that the correlation size between each index.It is each in order to guarantee
It is pairwise orthogonal between each index of the obtained principal component of covariance, needs to carry out singular value point to covariance matrix C
Solution, the method for the singular value decomposition specifically include:
C=U ∑ VT
Wherein, C is covariance matrix, and required U is orthogonal matrix, ∑ be on leading diagonal element be singular value and
The matrix that other elements are 0, VTFor the transposed matrix of matrix V, i.e. right singular vector, while V is also an orthogonal matrix, then
Using following formula calculating matrix V
(CTC)Vi=λiVi
Wherein, λiFor the characteristic value of vector, CTFor the transposed matrix of covariance matrix C, i is characterized the quantity of value, required
The V obtainediIt is exactly the corresponding right singular vector of this feature value, while solves the value of singular vector by following formula
Wherein, it solves and carrys out σiIt, will be maximum one in the singular vector value that solved for the value of required singular vector
A value σmaxFollowing equation is substituted into, singular value Description Matrix u is obtained
Wherein, VmaxFor σmaxCorresponding maximum λiSolve the V comei, and VmaxCorresponding value is exactly in vector
The final score of the candidate materials, to select the candidate materials with maximum final score as final material.
During the determination of above-mentioned material, due to selecting big figureofmerit alternatively standard and to carry out to material many-sided
The considerations of, this makes the result of final choice have scientific and validity.
In addition, corresponding to the upper of positive electrode paste and cathode lotion in the positive pole zone of each bipolar plates and negative regions
Surface and lower surface are all covered with diaphragm paper.The diaphragm paper can coat the positive electrode paste and the respective upper surface of cathode lotion
And lower surface, so that the positive electrode paste and the cathode lotion be prevented to be completely exposed in the electrolyte environment such as dilute sulfuric acid.Due to this
During the work time, bipolar plates are to need to be completely submerged in the electrolyte such as dilute sulfuric acid to lead-acid accumulator, therewith the electrolyte meeting
Electrochemical reaction occurs with the positive electrode paste and cathode lotion, if the positive electrode paste and the cathode lotion are completely exposed to electrolyte
In environment, with the generation of the electrochemical reaction, loosening on the positive electrode paste and cathode lotion meeting recurring structure, and having can
It can fall off from the aperture plate, this will greatly affect the efficiency of the electrochemical reaction.If the positive electrode paste or cathode lotion from
It falls off on aperture plate, then will lead to wire-grid structure and be exposed in the electrolyte environment such as dilute sulfuric acid, and the electrolyte such as dilute sulfuric acid are to aperture plate
With stronger corrosivity, with the passage of electrochemical reaction time, which can be easily electrolysed by dilute sulfuric acid etc.
Corrosion, and eventually lead to bipolar plates work actual effect.Therefore, equal in the upper and lower surfaces of the positive electrode paste and cathode lotion
Diaphragm paper is covered, the integrality of positive electrode paste and the self-curing structure of cathode lotion can be effectively maintained, to avoid this just
The consolidated structures of pole lotion and cathode lotion are destroyed and get loose phenomenon, this can effectively extend bipolar plates in dilute sulphur
Working life in the electrolyte environment such as acid.Preferably, which can be used non-conducting material, and it is bipolar to can be avoided this in this way
Short circuit phenomenon occurs for intralamellar part, to maintain the normal operating conditions of bipolar plates.Preferably, the thickness of the diaphragm paper can be
The thickness setting of 0.1mm-2mm, above-mentioned diaphragm paper can be while guaranteeing that diaphragm paper has good mechanical strength, additionally it is possible to have
The diaphragm paper is improved to the covering protection of the lotion in effect ground；In addition, the diaphragm paper can be realized the suction to dilute sulfuric acid electrolyte
It is attached, the sulfuric acid own quantity in battery product to improve bipolar plates formation, to extend the service life of battery.
Refering to Fig. 3, for the extreme daughter board of original in a kind of S type battery based on bipolar plates provided in an embodiment of the present invention and negative
The respective structural schematic diagram of monopole terminal board.It can be seen from figure 3 that being directed to the extreme daughter board of the original comprising based on an aperture plate
Structure, the aperture plate include adjacent first grid web area and second gate web area, which is coated with positive electrode paste
To form positive pole zone, which is one to leave a blank region；It equally include an aperture plate for the negative unipolar terminal board
As basic structure, which includes adjacent third aperture plate region and the 4th aperture plate region, which has
For cathode lotion to form negative regions, the 4th aperture plate region is one to leave a blank region.In fact, daughter board extreme for the original or
Person's negative unipolar terminal board, the rwo all includes aperture plate, positive electrode paste or cathode lotion, diaphragm paper, and the original is extremely sub
The negative regions part of the positive pole zone parts of plate and the bipolar plates, the negative unipolar terminal board and the bipolar plates stepped construction,
Material selection and dimensional parameters etc. can be identical, this can guarantee the extreme daughter board of the original and negative unipolar terminal board and this pair
Pole plate A and B all have identical electrochemical reaction characteristic, so as to improve the current flow uniformity in different piece region in battery.
It is aforementioned that the structure situation of bipolar plates A and B has been discussed in detail, the structure situation of the original extreme daughter board and negative unipolar terminal board
It can be configured according to the structure situation of bipolar plates A and B.Therefore this is just not repeated the extreme daughter board of the original and negative unipolar end
The structure situation of daughter board.
Furthermore it can be found by control experiment, the structural parameters such as shape and size of the aperture plate will affect the bipolar plates, just
The electrochemical reaction characteristic of monopole terminal board or negative unipolar terminal board, and then influence charge-discharge performance and the work of the battery
Service life etc..Specifically, which can be but be not limited to the screen net structure being staggered, the screen net structure and the prior art
Planar substrate structure compare, the contact area between the screen net structure and electrode pastes is significantly greater than the planar substrate knot
Contact area between structure and electrode pastes, and contact area significantly increases meeting so that in the case where identical size, the silk
Adhesiveness between web frame and the electrode pastes can be also substantially better than between the planar substrate structure and the electrode pastes
Adhesiveness.
Preferably, the screen net structure of the aperture plate can also have different shape, and screen net structure of different shapes can direct shadow
Ring the internal resistance situation of corresponding bipolar plates itself；Preferably, which can have and be staggered to form by warp and weft
Structure；Preferably, the interlaced formation rule of the warp and weft or irregular reticular structure, wherein the rule
Screen net structure has equally distributed rectangle, and perhaps the rectangular screen openings irregular screen net structure has shape or size
Inconsistent screen openings are distributed, such as irregular polygon screen openings.It finds after study, the silk with irregular shape
Web frame has lower internal resistance value compared to the screen net structure with regular shape, this is conducive to whole reduction bipolar plates
The internal resistance value of itself, and the internal resistance value of bipolar plates itself is lower, corresponding lead-acid accumulator then has more preferably charge and discharge electrical
The energy conversion efficiency of energy and the electrochemical reaction is also higher；Specifically, there is the premise of same area size in aperture plate
Under, for the aperture plate with irregular screen net structure compared to the aperture plate with regular screen net structure, internal resistance value can be effective
Ground reduces 30%-40%, this has obvious action for the electric property for improving bipolar plates.
Preferably, in order to enable electrode pastes to be firmly adhered on aperture plate, can also be arranged on the screen net structure
The barb structure of several random distributions.The barb structure can be distributed in warp and weft interlaced in the aperture plate.It should fall
The presence of thorn structure is capable of increasing the roughness and surface area on the aperture plate surface, this enables when electrode pastes are coated on grid
When on net surface, which can carry out adhesive bond with screen net structure to the maximum extent, it is final improve electrode pastes with
Adhesiveness between screen net structure.Preferably, the material of the aperture plate can be multiple for metallic lead, lead-containing alloy, carbon fiber and carbon fiber
Close any one in metal material；The work of weaving, casting, punching press, forging, punching, seine or rolling can be used in the aperture plate
Skill manufactures to be formed.
With continued reference to Fig. 1, in the stacked structure, for bipolar plates A, bipolar plates B, negative unipolar terminal board A1, negative unipolar
The extreme daughter board B1 of terminal board A2, original, the extreme daughter board B2 of original, what is be stacked with arbitrarily can be equipped with diaphragm between the two；Its
In, which can be flexible diaphragm, and the flexible diaphragm can deformation occurs in the thickness direction thereof.The diaphragm can be used as mutually folded
The buffering separation layer between different components set, the i.e. diaphragm can be avoided different components stacked on top of each other and directly contact and cause
Abrasion, and the compressibility of the diaphragm can also make during being packaged to battery improve encapsulation operation plasticity
And convenience, to further decrease the volume of battery and realize the integration of compact of battery.
With continued reference to Fig. 1, between first bipolar plates stack and second bipolar plates stack, in the second bipolar sheetpile
The folded and third bipolar plates can be equipped with partition between stacking；Wherein, which is hard material partition.The partition can be used as mutually
Buffering separation layer between stacked different components, the i.e. partition can be avoided different components stacked on top of each other and directly contact and draw
The abrasion risen, and the compressibility of the partition can also to improve the plastic of encapsulation operation during being packaged battery
Property and convenience, with further decrease battery volume and realize battery integration of compact.
In order to further increase the power supply performance of battery, the present invention also provides a kind of composite S type battery, the composite S type electricity
Pond includes several S type batteries, wherein several S type batteries along it includes stacked structure stacking direction successively heap
It is folded；Preferably, in the stacking that several S type batteries are formed, the extreme daughter board of original of one of S type battery or negative single
Extreme daughter board is connect with the negative unipolar terminal board of next S type battery or the extreme daughter board of original, and several S type batteries
Only retain the extreme daughter board of a pair of of original and negative unipolar terminal board of a first tail in the stacking in the stacking of formation.
Preferably, which may also include compressing member, and the compressing member is for clamping and fixing stacked on top of each other
Several S type batteries, with guarantee several S type batteries stacked on top of each other in structure have globality.Due to several S type batteries
It is only stacked on top of each other together to be combined into composite battery, corresponding fixed form is not set between several S type batteries
Come the stability for keeping S type battery stacked on top of each other, which can be clamped by the compressing member simultaneously, to prevent
Several S type batteries are detached from original stacked structure due to external influence.In addition, may be used also between adjacent several S type batteries
Equipped with partition, when the compressing member is when gripping several S type batteries, additionally it is possible to which further compression reduces several S types
The stacking volume of battery.
Preferably, which includes the first sub- compression fitting and the second sub- compression fitting, wherein the first son compression
Accessory is folded U-shaped, which has the shape that matches with the first sub- compression fitting, the first son pressure
Contracting accessory and the second sub- compression fitting be combined with each other and are in hollow structure, and after composite S type battery completes, this first
Sub- compression fitting and the second sub- compression fitting are combined with each other and the composite S type battery are clamped in the hollow of the hollow structure
In part, the composite S type battery is gripped to realize.
In addition, it is each it is cell performance can be equivalent to the insignificant capacitor of internal resistance, can be obtained according to the discharge principle of capacitor
To following discharge voltage formula:
In above-mentioned formula, U (t) is the voltage at the capacitor both ends after discharge time t, and E is that capacitor electric discharge is preceding corresponding
Initial voltage, e are the nature truth of a matter, and R is the equivalent resistance of capacitances to supply power object, and C is the corresponding capacitance of capacitor.
Since the supply object of battery usually requires biggish supply current and supply voltage, therefore single battery core is simultaneously
It is not able to satisfy above-mentioned power reguirements, and when the battery quantity being stacked with is excessive, supply voltage again can be excessive and right
Supply object generates damage, therefore according to above-mentioned discharge voltage formula, may gradually increase the stacking quantity of battery, makes power supply pair
As the voltage at both ends can be stable always in the voltage range for working normally it, while the battery of the stacking is also extended
Service life, detailed process is as follows:
Firstly, determining the quantity of the initial battery for stacking access, and it will meet following conditional:
Umin≤nE≤Umax
In the above conditions, UminFor the minimum voltage that supply object can be made to work normally, UmaxFor supply object can be made
The maximum voltage (not damaging the maximum voltage of supply object) of normal work, n are the quantity of the initial battery for stacking access,
E is corresponding initial voltage before each battery is discharged.
After the quantity for also determining the initial battery for stacking access by above-mentioned condition, is accessed in supply object, connect
Make the n battery start to discharge, using voltmeter measurement supply object both ends voltage, work as satisfactionWhen, then access and increase a battery, while current discharge time t is denoted as t0,
And update the discharge voltage formula of battery:
When meeting U (t)=1.5*UminWhen, then access and increase a battery, while current discharge time t being denoted as
t1, and update the discharge voltage formula of battery:
So analogize, be sequentially ingressed into increase battery in the manner described above, until supply object completes work or whole
Battery is by until accessing.It, can not only be to the larger supply current of needs and power supply by the access way of above-mentioned battery
The supply object of voltage is safely and efficiently powered, and can also improve the service life for stacking the battery formed.
From above-described embodiment as can be seen that the S type battery based on bipolar plates is will be several double in a manner of folding arrangement
Pole plate stacking is combined connection, and the S battery that this mode for folding arrangement is formed can not only guarantee the positive terminal of battery
The side different with the two sides that negative pole end is located at battery, to prevent battery, there is a situation where internal short-circuits, and can also mention
The convenience of the high subsequent connecting wiring of battery；In addition, the S type battery can also effectively reduce ruler of the battery on different dimensions
It is very little, to improve the integration of compact degree of S type battery.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of S type battery based on bipolar plates, the S type battery include the first bipolar plates stack, the second bipolar plates stack, the
Three bipolar plates stacking, the first tab, the second tab, positive terminal and negative terminal, the first bipolar plates stacking, described second
Bipolar plates stack and third bipolar plates stacking from top to bottom stacks gradually setting, it is characterised in that:
First bipolar plates stack, second bipolar plates stack and third bipolar plates stacking all has identical stacking
Structure, the stacked structure are that bipolar plates A, bipolar plates B, negative unipolar terminal board A1, negative unipolar terminal board A2, original is extremely sub
The extreme daughter board B2 of plate B1, original is stacked and is formed；
First bipolar plates are stacked, corresponding negative unipolar terminal board A1 and negative unipolar terminal board A2 with the cathode
Terminal electrical connection, the corresponding extreme daughter board B1 and extreme daughter board B2 of original of original are electrically connected with second tab；
Second bipolar plates are stacked, the corresponding extreme daughter board B1 and extreme daughter board B2 of original of original is with described first
Tab electrical connection, corresponding negative unipolar terminal board A1 and negative unipolar terminal board A2 are electrically connected with second tab；
The third bipolar plates are stacked, corresponding negative unipolar terminal board A1 and negative unipolar terminal board A2 are with described first
Tab electrical connection, the corresponding extreme daughter board B1 and extreme daughter board B2 of original of original are electrically connected with the positive terminal.
2. the S type battery based on bipolar plates as described in claim 1, it is characterised in that: described double in the stacked structure
The positive pole zone part of pole plate A, the negative unipolar terminal board A1, the positive pole zone part of the bipolar plates B and the negative unipolar
Terminal board A2 is from top to bottom stacked gradually, and the negative regions part of the bipolar plates A, the extreme daughter board B1 of the original, institute
The negative regions part and the extreme daughter board B2 of the original for stating bipolar plates B from top to bottom stack gradually.
3. the S type battery based on bipolar plates as described in claim 1, it is characterised in that: the bipolar plates A and the bipolar plates
B bipolar plate structure having the same, the bipolar plate structure include an aperture plate, and first part's region coating of the aperture plate has
For positive electrode paste to form the positive pole zone part, it is described to be formed that the second part region coating of the aperture plate has cathode lotion
Negative regions part is separated with the third portion by the aperture plate between going back between the positive pole zone part and the negative regions part
The region of leaving a blank that subregion is formed, upper and lower surfaces of the corresponding positive electrode paste in the first part region and described
The upper and lower surfaces of the corresponding cathode lotion in second part region are all covered with diaphragm paper.
4. the S type battery based on bipolar plates as described in claim 1, it is characterised in that: first bipolar plates stack and institute
It states between the second bipolar plates stacking, second bipolar plates, which are stacked, is equipped with partition between third bipolar plates stacking, institute
Stating partition is hard material partition.
5. the S type battery based on bipolar plates as claimed in claim 4, it is characterised in that: the partition includes discrete first
Sub-dividing plate and the second sub-dividing plate, first sub-dividing plate and second sub-dividing plate be located at the negative unipolar terminal board A1,
On the corresponding area of space of negative unipolar terminal board A2, original extreme daughter board B1 or the extreme daughter board B2 of original.
6. the S type battery based on bipolar plates as described in claim 1, it is characterised in that: the extreme daughter board of original includes grid
Net, the aperture plate include adjacent first grid web area and second gate web area, and the first grid web area is coated with positive cream
For body to form positive pole zone, the second gate web area is one to leave a blank region, the corresponding positive electrode paste of the positive pole zone it is upper
Surface and lower surface are all covered with diaphragm paper.
7. the S type battery based on bipolar plates as described in claim 1, it is characterised in that: the negative unipolar terminal board includes grid
Net, the aperture plate include adjacent third aperture plate region and the 4th aperture plate region, and the third aperture plate region coating has cathode cream
For body to form negative regions, the 4th aperture plate region is one to leave a blank region, the corresponding cathode lotion in the negative regions it is upper
Surface and lower surface are all covered with diaphragm paper.
8. the S type battery based on bipolar plates as described in claim 1, it is characterised in that: in the stacked structure, for double
Pole plate A, bipolar plates B, negative unipolar terminal board A1, negative unipolar terminal board A2, the extreme daughter board B1 of original, the extreme daughter board B2 of original, phase
What is mutually stacked is any between the two equipped with diaphragm, and the diaphragm is flexible diaphragm, and the flexible diaphragm can be in its thickness direction
It is upper that deformation occurs.
9. a kind of composite S type battery, the composite S type battery includes multiple such as S type electricity of any of claims 1-8
Pond, it is characterised in that: multiple S type batteries are stacked gradually along the stacking direction of the stacked structure.
10. composite S type battery as claimed in claim 9, which is characterized in that the composite S type battery further includes a pair of of compression
Element, the pair of compressing member is for gripping the multiple S type batteries being stacked with.
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| CN201910196075.4A CN109888298A (en) | 2019-03-14 | 2019-03-14 | A kind of S type battery based on bipolar plates |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910196075.4A CN109888298A (en) | 2019-03-14 | 2019-03-14 | A kind of S type battery based on bipolar plates |
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