CN206742354U - Battery pack and battery unit thereof - Google Patents
Battery pack and battery unit thereof Download PDFInfo
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- CN206742354U CN206742354U CN201720305850.1U CN201720305850U CN206742354U CN 206742354 U CN206742354 U CN 206742354U CN 201720305850 U CN201720305850 U CN 201720305850U CN 206742354 U CN206742354 U CN 206742354U
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- battery unit
- battery
- metallic plate
- battery pack
- seal
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 33
- 238000010276 construction Methods 0.000 claims description 9
- 239000000565 sealant Substances 0.000 claims description 8
- 230000009172 bursting Effects 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 230000005611 electricity Effects 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000007779 soft material Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
-
- 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
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a battery pack and a battery unit thereof, wherein, the battery pack comprises at least two battery units which are stacked, the shell of the battery unit comprises an upper metal plate and a lower metal plate, and a sealing element is arranged between the upper metal plate and the lower metal plate; the metal plate parts of the adjacent battery units are connected together in a conductive mode to form a connecting area and a separating area, and an elastic buffer body with compression contraction characteristics is further arranged in a cavity formed by the metal plates and the sealing member. The utility model provides a group battery and battery unit thereof through the elastic buffer body that has the compression shrinkage characteristic in the inside setting of battery unit, can offset or eliminate battery unit and take place deformation to set up the problem of bursting because inflation or pressurized.
Description
Technical field
The utility model belongs to the technical field of battery manufacture, and in particular to a kind of battery pack and its battery unit.
Background technology
At present, in the structure design of fuel cell, bipolar battery construction is a kind of common design method, bipolar cell
Available for battery energy storage capacity, reduction encapsulation weight and the volume improved based on weight and volume, provide stabilization
Battery performance and low internal resistance.
The structure of bipolar cell generally comprises the bipolar layer of conduction, i.e., so-called bipolar plates, it is used as phase in the battery
Electrical interconnection between adjacent monocell and as the partition between each battery unit.It is double in order to successfully utilize dipolar configuration
Pole plate needs fully conduction, to transmit electric current from a monocell to another monocell, and has well in battery context
Chemical stability.
Referring to Fig. 1, Fig. 1 is that a kind of structure schematic diagram of conventional bipolar cell is (public referring to patent in the prior art
The number of opening is CN1555584A application documents), in the bipolar battery construction, its bipolar plates 2 is arranged on the inside of battery case 1
Multiple battery units are formed with interval, the both sides of bipolar plates 2 are respectively the positive and negative electrode of battery (label 3,5 in figure), battery just,
It is insulating barrier 4 between negative pole, electrolyte is filled in the space between each bipolar plates 2.Existing for this kind of bipolar battery construction
Problem is, when a certain battery unit is expanded or destroyed, due to the structure of no buffering, its be easy to make with
Its adjacent battery unit is damaged, and is for example involved due to expansion and destroys battery unit adjacent thereto, in some instances it may even be possible to be swollen
The monolithic case of battery is opened, and then destroys whole battery pack structure.Therefore, the bipolar cell of this kind of structure be likely occurred by
Broken down in single battery unit and cause the destroyed situation of whole battery pack.
Utility model content
In view of this, the utility model embodiment provides a kind of battery pack and its battery unit, and the battery pack structure can
Solve to cause battery pack structure unstable due to lacking safety protection structure present in prior art bipolar battery construction
Technical problem.
In order to solve the above technical problems, on the one hand the utility model provides a kind of battery pack, the battery pack is included at least
Two stack the battery unit set, and the shell of the battery unit includes upper metallic plate and lower metallic plate, the upper metallic plate
Seal is provided between lower metallic plate；The metal plate sections of adjacent cell are electrically connected together, with the company of being formed
Region and separated region are connect, the elasticity with compression shrinkage character is additionally provided with the cavity that the metallic plate is formed with seal and is delayed
Rush body.
According to the preferred embodiment of the utility model one, the elastic buffer body is hollow-core construction.
According to the preferred embodiment of the utility model one, the elastic buffer body can be hollow cube, hollow ball, sky
Heart column, hollow annular body.
According to the preferred embodiment of the utility model one, the same metallic plate of battery unit two is set between the separated region of one end
There are one or more seals, when the same metallic plate of battery unit two is the same as setting multiple seals between the separated region of one end
When, the material of each seal can be with identical or different.
According to the preferred embodiment of the utility model one, the same metallic plate of battery unit two is set between the separated region of one end
Two seals are put, and are more than close to the elastic properties of materials coefficient of battery unit inboard seal close to battery unit outer seal
Elastic properties of materials coefficient.
According to the preferred embodiment of the utility model one, the adjacent metal sheets of adjacent cell are the same as between the separated region of one end
Provided with elastic support.
According to the preferred embodiment of the utility model one, the battery pack also includes the adjacent metal for being located at adjacent cell
Plate is the same as the circuit board between the separated region of one end.
According to the preferred embodiment of the utility model one, same one end separated region periphery of the same metallic plate of battery unit two is also
Being sticked has sealant tape.
In order to solve the above technical problems, on the other hand the utility model provides a kind of battery unit, the battery unit
Shell includes upper metallic plate and lower metallic plate, and seal is provided between the upper metallic plate and lower metallic plate；Adjacent cell list
The metal plate sections of member are electrically connected together, to form join domain and separated region, the metallic plate and seal shape
Into cavity in be additionally provided with the elastic buffer body with compression shrinkage character.
According to the preferred embodiment of the utility model one, the elastic buffer body is hollow-core construction.
According to the preferred embodiment of the utility model one, the elastic buffer body can be hollow cube, hollow ball, sky
Heart column, hollow annular body.
Relative to prior art, battery pack provided by the utility model and its battery unit, by cell internal
Elastic buffer body with compression shrinkage character is set, can offset or eliminate battery unit and occur due to expand or being pressurized
Deformation sets the problem of explosion.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of structure schematic diagram of conventional bipolar cell in the prior art；
Fig. 2 is the structural representation of the utility model battery pack first embodiment；
Fig. 3 is the structure chart of battery unit first embodiment；
Fig. 4 is the structural representation of the utility model battery pack second embodiment；
Fig. 5 is the structure chart of battery unit second embodiment；
Fig. 6 is the structure chart of battery unit 3rd embodiment；
Fig. 7 is the schematic diagram that first seal deforms upon in Fig. 6 embodiments；
Fig. 8 is the structural representation of the utility model battery pack 3rd embodiment；
Fig. 9 is the structure chart of battery unit fourth embodiment；
Figure 10 is the schematic diagram that battery unit segmental arc deforms upon in Fig. 9 embodiments；
Figure 11 is the structural representation of the utility model battery pack fourth embodiment；
Figure 12 is the structural representation of the embodiment of the utility model battery pack the 5th；
Figure 13 is the structural representation of the utility model battery pack sixth embodiment；
Figure 14 is the structural representation of the embodiment of the utility model battery pack the 7th；
Figure 15 is the schematic diagram of battery pack structure variant embodiment in Figure 14 embodiments；
Figure 16 is the schematic diagram of battery pack structure another kind variant embodiment in Figure 14 embodiments；
Figure 17 is the structural representation of the embodiment of the utility model battery pack the 8th；And
Figure 18 is a kind of variant embodiment of battery pack structure in Figure 17 embodiments.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in further detail.It is it is emphasized that following
Embodiment is merely to illustrate the utility model, but the scope of the utility model is not defined.Likewise, following examples are only
For section Example of the present utility model, not all embodiments, those of ordinary skill in the art are not making creative work
Under the premise of all other embodiment for being obtained, belong to the scope of the utility model protection.
Embodiment 1
Referring to Fig. 2, Fig. 2 is the structural representation of the utility model battery pack first embodiment；Electricity in the embodiment
Pond group includes 5 battery units (A, B, C, D, E), and certainly, in other embodiments, the quantity of battery unit is not limited to 5,
It can be 2,3,4,6 ... or multiple.Particular number depends on the output voltage requirement of battery.Multiple battery lists
Member series connection can form a battery pack with the output voltage specified.
The outside of battery pack is upper and lower end plate (11,22), and upper and lower end plate (11,22) can be metal collector plate, and it is made
With being to play a part of conductive and external support, it is therefore desirable to possess electric action and there is certain mechanical strength.In addition,
Upper and lower end plate (11,22) can also be supporting plate, for forming the shell of battery pack.Upper and lower end plate (11,22) can be in electricity
Metal support is provided inside the group shell of pond.Upper and lower end plate (111,22) is also used as the external positive and negative pole of battery pack.
Referring to Fig. 3, Fig. 3 is the structure chart of battery unit first embodiment, the both sides of each battery unit are equipped with gold
Belong to plate 110, the metal plate sections of adjacent cell are electrically connected together.In this embodiment, each metallic plate 110 is equal
Including join domain 111 and separated region 112, join domain 111 is for being conductively connected between adjacent cell.In the reality
Apply in example, separated region 112 is located at one end of metallic plate 110, and the other end is that join domain 111 is directly linked together, preferably
Ground, join domain 111 and separated region 112 are structure as a whole, and can be made of same metal sheet punching press.
Preferably, between the adjacent metal sheets of adjacent cell by the way of being fixedly connected.In this embodiment, phase
It is directly to abut connection between the adjacent metal sheets join domain 111 of adjacent battery unit, certainly, in other embodiments, phase
It can also be indirectly connected between the adjacent metal sheets join domain 111 of adjacent battery unit by conductive materials.It is adjacent
The adjacent metal sheets join domain 111 of battery unit can be pressed together, and either weld together or use is led
Electric adhesive bonding is together etc..
Please continue to refer to Fig. 2, in this embodiment, it is between the adjacent metal sheets separated region 112 of adjacent cell
Separation, form gap 505.This kind of structure can be when battery unit expands or is squeezed, at separated region 112
The gap 505 of formation, which is pressurized, shrinks, and can offset or alleviate the deformation of battery unit metallic plate.Gap 505 at separated region 112
Equivalent to the safety protection structure of buffering cell-type, effectively it can prevent battery unit from being destroyed.Ensure the steady of battery pack structure
It is qualitative.
In order to provide good shock-absorbing capacity, the space in gap 505 can not be too small, it is preferred that the width L in gap 505 is extremely
It is the 20% of battery unit thickness less, it is furthermore preferred that the width L in gap 505 is at least the 40% of battery unit thickness, this area
The numerical value for the width L that technical staff can also set gap 505 according to being actually needed, is in the consideration of battery capacity, gap certainly
505 can not set it is excessive.
Each battery unit includes positive plate 131, minus plate 132 and between minus plate 132 and positive plate 131
Insulating barrier 133.Cathode-anode plate between adjacent cell is alternately arranged.The cavity 134 of cell internal is used to hold
Put electrolyte.
The adjacent metal sheets of adjacent cell are preferably that different materials is made.The metallic plate for pressing close to positive plate 131 can
To be selected based on the potential of anode, such as copper or other materials.And the metallic plate for pressing close to minus plate 132 can be based on
The potential of negative electrode is selected, such as aluminium or other materials.In other words, press close to the metallic plate of not plates of similar polarity can be based on it is cloudy,
The potential requirements of anode select material.
And can be then any suitable battery material on the material of positive plate 131 and minus plate 132.For example, anode
The material of plate 131 can be the alloy or oxide of tin, lithium, calcium etc., and can also be that silicon, graphite etc. are other can be used as battery sun
The material of pole.And the material of minus plate 132 can be oxide and cobalt acid lithium, lithium carbonate of lithium etc., in art technology
In the range of the understanding of personnel, it will not enumerate herein.
The thickness of metallic plate 110 is preferably 2-100 microns, on the one hand can meet that metallic plate 110 is bent within the range
The requirement of processing, it on the other hand can also meet the requirement of cell seal intensity.It is further preferred that the metallic plate
110 thickness can be between 5-80 microns.
Seal 120 is provided between the separated region 112 of the same metallic plate of battery unit two, same battery unit can be made
The sealing of two adjacent metal sheets is combined to prevent electrolyte leakage.Electrolyte can be solid, colloid or liquid.Sealing
Part 120 can realize that electrochemistry is isolated by the sealing between adjacent cell.It is close in the case where ensureing to seal timeliness
The material of sealing 120 can possess good bonding and any materials with favorable elasticity between metal level, for example multiple
Condensation material, including rubber-asbestos, aerogel blanket-polyurethane etc.；Rubber type of material or plastics etc..
Elastic buffer is additionally provided with inside the cavity 134 that battery unit metallic plate 110 is formed with seal 120 in the embodiment
Body 140, when battery unit expands or is squeezed, elastic buffer body 140 shrinks because of compression, to offset or alleviate
The deformation of cell seal metallic plate.Wherein, elastic buffer body 140 is made up of soft material, for example rubber etc., in order to enter one
Step increases its deformation quantity, it is preferable that the buffer body is hollow-core construction, can be for example hollow cube, hollow ball, open tubular column
Shape body, hollow annular body etc..It will be apparent that this kind of structure allow battery unit bear bigger battery cell swell or by
Swaging becomes compared to for only setting seal 120.
Embodiment 2
It should be noted that in subsequent embodiment, will only highlight with structure difference in embodiment 1, it is and identical
Or similar architectural feature, it will not be described in further detail.
Referring to Fig. 4, Fig. 4 is the structural representation of the utility model battery pack second embodiment, the electricity in the embodiment
Pond group is equally to include 5 battery units of A, B, C, D, E, and the difference with a upper embodiment is, battery unit in the embodiment
Metallic plate both ends are designed with separated region, and are equipped with seal between the separated region of the metallic plate of same battery unit two, should
Kind structure can form more gaps 505 between separated region, therefore further increase the resistance to expansion system of battery unit
Number, is doubled compared to the structure in embodiment 1.In addition, also increase is provided with elastic buffer body 140, further enhance
The resistance to swelliong power of battery unit.Certainly, the setting quantity of elastic buffer body 140 and position are not limited to the utility model implementation
Situation in example, those skilled in the art can or resistance to expansion requirements pressure-resistant according to the reality of battery unit be configured.
Referring to Fig. 5, Fig. 5 is the structure chart of battery unit second embodiment, in order to improve sealing effectiveness, seal 120
Structure be not limited to structure in embodiment, can also be the structure type for extending to battery unit inside cavity.Further,
Referring to Fig. 6, Fig. 6 is the structure chart of battery unit 3rd embodiment, in the embodiment, the same metallic plate of battery unit two is same
Multiple seals are provided between the separated region at end, and when the same metallic plate of battery unit two is set between the separated region of one end
When putting multiple seals, the material of each seal can be with identical or different.
Seal quantity is preferably two in the present embodiment, i.e., first seal 121 and second seal 122 in figure, its
In, first seal 121 is located on the inside of battery unit, and second seal 122 is located on the outside of battery unit, wherein,
Elastic properties of materials coefficient close to first seal 121 on the inside of battery unit is more than close to second seal 122 on the outside of battery unit
Elastic properties of materials coefficient, it is highly preferred that the thickness of first seal 121 be less than second seal 122 thickness, in order to
Make when battery unit expands or is squeezed, the first second seal can be with double-layer seal so that sealing more may be used
Lean on, and first seal 121 is easier to deform, and can like this offset or alleviate the shape of battery unit metallic plate
Become.Also referring to Fig. 7, Fig. 7 is the schematic diagram that first seal deforms upon in Fig. 6 embodiments, and dotted line represents first in figure
Seal 121 deform upon after situation.
Embodiment 3
Referring to Fig. 8, Fig. 8 is the structural representation of the utility model battery pack 3rd embodiment, compared to embodiment 1
Speech, the adjacent metal sheets of adjacent cell are the same as being provided with elastic support 506, i.e. phase between the separated region of one end in the embodiment
When battery pack heap can be strengthened in the position that elastic support has been filled into original gap 505, the elasticity of elastic support 506
The extensibility in folded direction.Elastic support 506 can use any suitable material.It is such as silicon rubber, ethylene propylene diene rubber, poly-
The material that ethene and polyvinyl chloride etc. have the property that：Good insulating, can be coexisted with electrolyte can be 10 volts in voltage
Below and less than 200 degree stable etc..Preferably, elastic support at least can elastic shape on the stacking direction of battery unit
Become increase by 15% or bigger.
Also referring to Fig. 9 and Figure 10, Fig. 9 is the structure chart of battery unit fourth embodiment, and Figure 10 is in Fig. 9 embodiments
The schematic diagram that battery unit segmental arc deforms upon, the embodiment and the difference of battery unit structure in embodiment 1 are, separate
Region 112 include one into battery unit lateral bend segmental arc 1102, when battery unit expands or is squeezed,
The segmental arc 1102 is outstanding, to offset or alleviate the deformation of battery unit metallic plate.Furthermore it is also possible to it is not provided with seal
And elastic buffer body.
Preferably, the join domain 111 and separated region 112 are structure as a whole, wherein, the material thickness of segmental arc 1102
It is less than less than the other parts material of separated region 112 and the thickness of the material of join domain 111, or the thickness of segmental arc 1102
One of join domain 111 and the other parts of separated region 112, the material thickness for why designing segmental arc 1102 are smaller by one
A bit, mainly consider when battery unit expands or is squeezed, segmental arc 1102 due to material thickness be less than and its
It adjacent join domain 111 and separated region 112, can be deformed upon with easier, and make join domain 111, separated region
112 and battery unit other parts structure holding structure it is stable, avoid battery unit from being damaged.Dotted line represents arc in Figure 10
The situation that shape section 1102 deforms upon.
Embodiment 4
Figure 11 is referred to, Figure 11 is the structural representation of the utility model battery pack fourth embodiment, from the embodiment
It can be seen that, for the structure compared to embodiment 1, conducting block 88 is provided between adjacent cell in figure, is specially
Gap 801 is provided between the adjacent metal sheets join domain of adjacent cell and is linked together by conducting block 88.
Wherein, the material of the conducting block 88 is preferably that soft material is made, for example aluminium, titanium alloy etc..It is preferred that soft material
The benefit of material is, when battery unit expands or is squeezed, the one side of conducting block 88, which plays, is conductively connected adjacent gold
Belong to the effect of plate, certain deformation on the other hand can also occur, allow battery unit except occurring at separated region 112
Outside deformation, it can also be deformed upon in the opening position of join domain 111.
Embodiment 5
Refer to Figure 12, Figure 12 is the structural representation of the embodiment of the utility model battery pack the 5th, in the embodiment only
Tri- battery units of A, B, C are illustrated, the embodiment is thought to illustrate that the direction of battery unit separated region can be with staggered row
Row, i.e., some towards left setting, some are differed towards right setting, the direction of battery unit separated region.Can be with from the embodiment
Find out, battery unit separated region is not limited in Fig. 1 embodiments set towards side.Certainly, the knot of battery unit other parts
Structure feature is identical with previous embodiment, is also no longer described in detail herein.
Embodiment 6
Refer to Figure 13, Figure 13 is the structural representation of the utility model battery pack sixth embodiment, electricity in the embodiment
Pond group structure has compared to previous embodiment to be improved at two.One is the different setting shape of direction for also using separated region
Formula, the direction of tetra- battery unit separated regions of A, B, C, D is staggered in figure；The second is the separation of each battery unit
Region 112 is positioned only at side, and opposite side is directly sealed by seal 120 with the join domain 111 of adjacent cell to be connected
Connecing, this kind of structure is provided with side for 112 due to its separated region, therefore than the knot in embodiment 1 from the aspects of processing
Structure is simpler.
Embodiment 7
Referring to Figure 14, Figure 14 is the structural representation of the embodiment of the utility model battery pack the 7th, in the embodiment, electricity
The adjacent metal sheets that pond group also includes being located at adjacent cell are the same as the circuit board 150 between the separated region of one end.Circuit board 150
For battery pack balance, heat management or other possible functions etc..By circuit board 150 be located at internal battery pack benefit be can
To make full use of internal battery pack space, the quantity and length of wire are reduced, it is not necessary to which the wire of electrode is extended into battery pack case
The outside of body (not shown), so as to strengthen the overall sealing of battery pack.It is excellent in order to further utilize internal battery pack space
Circuit board 150 is arranged on the same side of the same side either battery pack of separated region by selection of land.
Also referring to Figure 15, Figure 15 is the schematic diagram of battery pack structure variant embodiment in Figure 14 embodiments, in order that
Circuit board 150 can be protected, also for the sealing for further enhancing seal 120, in the same gold medal of battery unit two
Same one end separated region periphery of category plate is also sticked and has sealant tape 160.The material of sealant tape 160 can be ceramics or polymerization
The materials such as thing.The effect of sealant tape 160 includes preventing the short circuit of circuit board 150, there is provided preferably chemistry or electrochemical stability
And provide more preferable mechanical strength of battery unit etc..
In addition, on the basis of in conjunction with the embodiments 2, Figure 16 is referred to, Figure 16 is that battery pack structure is another in Figure 14 embodiments
A kind of schematic diagram of variant embodiment, the embodiment think explanation, sealant tape 160 not necessarily with circuit board 150
Set together, sealant tape 160 can also be separately provided certainly in battery unit separated region periphery, as shown in FIG..
Embodiment 8
Refer to Figure 17, Figure 17 is the structural representation of the embodiment of the utility model battery pack the 8th, in the embodiment
Battery pack includes at least two and stacks the battery unit set, and the situation of two battery units, the structure are only indicated in figure
The adjacent battery unit of any two can be expressed as.The outside of battery unit is sealing metal plate 110, sealing metal plate 110
It is internally provided with positive plate, minus plate, the insulating barrier between minus plate and positive plate.
The join domain 111 of adjacent cell sealing metal plate is in ripple struction, and is formed between ripple struction multiple
Space 101, when battery unit expands or is squeezed, space 101 is shunk because of compression to diminish, and then offsets or delay
The deformation of electrolytic cell unit sealing metal plate.Dotted line circular arc is expressed as the situation after ripple struction deforms upon in figure.
Please continue to refer to Figure 18, Figure 18 is a kind of variant embodiment of battery pack structure in Figure 17 embodiments, the embodiment
Unlike Figure 17 embodiments, adjacent cell join domain 111 only has side to be arranged to ripple struction, and opposite side connects
It is planar structure to connect region 111, and this kind of structure is the improvement made after battery unit stacking stability is fully taken into account, because
If both sides join domain 111 is all ripple struction, battery unit is stacked and is easily shifted over, and uses side bonding pad
Domain 111 is plane, and opposite side join domain 111 is ripple struction, can take into account battery unit and stack stability and prevent electricity
Pond inflatable air.
In addition, the battery pack and battery unit in the embodiment can also include other structures feature, for example separating
Gap, elastic support are set at region；In cell internal, buffer body is set；Join domain and Disengagement zone in metallic plate
Segmental arc is set between domain；Ripple struction etc. is set between adjacent cell join domain, can act as when battery list
When member is expanded or is squeezed, the effect of counteracting or the deformation of alleviation battery unit metallic plate, in addition, also by circuit board
Internal battery pack is arranged on to improve battery pack space availability ratio；By setting fluid sealant to bring enhancing protection and sealing property.
Above example is to battery unit and the integrally-built description of battery pack, and the technology in the various embodiments described above is special
Sign can also extend more embodiments certainly after different combinations, in those skilled in the art not by wound
The property made work, and simply with the simple combination of technical characteristic in the utility model also should the scope of protection of the utility model it
It is interior.
Claims (10)
1. a kind of battery pack, it is characterised in that the battery pack includes at least two and stacks the battery unit set, the battery
The shell of unit includes upper metallic plate and lower metallic plate, and seal is provided between the upper metallic plate and lower metallic plate；It is adjacent
The metal plate sections of battery unit are electrically connected together, to form join domain and separated region, the metallic plate with it is close
The elastic buffer body with compression shrinkage character is additionally provided with the cavity that sealing is formed.
2. battery pack according to claim 1, it is characterised in that the elastic buffer body is hollow-core construction.
3. battery pack according to claim 2, it is characterised in that the elastic buffer body is hollow cube or hollow ball
Body or open column shape body or hollow annular body.
4. battery pack according to claim 1, it is characterised in that Disengagement zone of the same metallic plate of battery unit two with one end
One or more seals are provided between domain, when the same metallic plate of battery unit two is multiple with being set between the separated region of one end
During seal, the material of each seal can be with identical or different.
5. battery pack according to claim 4, it is characterised in that Disengagement zone of the same metallic plate of battery unit two with one end
Two seals are set between domain, and are more than close to the elastic properties of materials coefficient of battery unit inboard seal on the outside of battery unit
The elastic properties of materials coefficient of seal.
6. battery pack according to claim 5, it is characterised in that the adjacent metal sheets of adjacent cell separate with one end
Elastic support is provided between region.
7. battery pack according to claim 1, it is characterised in that the battery pack also includes being located at adjacent cell
Adjacent metal sheets are the same as the circuit board between the separated region of one end.
8. battery pack according to claim 1, it is characterised in that same one end Disengagement zone of the same metallic plate of battery unit two
Overseas week, which is also sticked, sealant tape.
A kind of 9. battery unit, it is characterised in that the shell of the battery unit includes upper metallic plate and lower metallic plate, it is described on
Seal is provided between metallic plate and lower metallic plate；The metal plate sections of adjacent cell are electrically connected together, with
Join domain and separated region are formed, is additionally provided with the cavity that the metallic plate is formed with seal with compression shrinkage character
Elastic buffer body.
10. battery unit according to claim 9, it is characterised in that the elastic buffer body is hollow-core construction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016103052257 | 2016-05-06 | ||
| CN201610305225 | 2016-05-06 |
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| CN206742354U true CN206742354U (en) | 2017-12-12 |
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| CN201720305850.1U Active CN206742354U (en) | 2016-05-06 | 2017-03-24 | Battery pack and battery unit thereof |
| CN201710183870.0A Active CN107346816B (en) | 2016-05-06 | 2017-03-24 | Battery pack and battery unit thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710183870.0A Active CN107346816B (en) | 2016-05-06 | 2017-03-24 | Battery pack and battery unit thereof |
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| CN (2) | CN206742354U (en) |
| WO (1) | WO2017190565A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346816A (en) * | 2016-05-06 | 2017-11-14 | 安徽巨大电池技术有限公司 | Battery pack and battery unit thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109698365A (en) * | 2018-12-05 | 2019-04-30 | 上海空间电源研究所 | A kind of lithium metal battery with elastic buffer structure |
| CN111326757B (en) * | 2018-12-14 | 2021-10-15 | 中国科学院大连化学物理研究所 | Metal seawater fuel cell stack |
| WO2021104606A1 (en) * | 2019-11-25 | 2021-06-03 | Hoeller Electrolyzer Gmbh | Sealing arrangement for electrochemical cells of the pem type |
| DE102020209759A1 (en) * | 2020-08-03 | 2022-02-03 | Volkswagen Aktiengesellschaft | high-voltage cell |
| CN115136402B (en) * | 2020-12-24 | 2023-12-05 | 宁德新能源科技有限公司 | Battery pack and power utilization device applying same |
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| US5393617A (en) * | 1993-10-08 | 1995-02-28 | Electro Energy, Inc. | Bipolar electrochmeical battery of stacked wafer cells |
| US6503658B1 (en) * | 2001-07-11 | 2003-01-07 | Electro Energy, Inc. | Bipolar electrochemical battery of stacked wafer cells |
| JP4155054B2 (en) * | 2003-02-18 | 2008-09-24 | 日産自動車株式会社 | Bipolar battery |
| CN2845186Y (en) * | 2005-09-20 | 2006-12-06 | 胜光科技股份有限公司 | Fuel battery device with circuit assembly |
| CN2852407Y (en) * | 2005-11-17 | 2006-12-27 | 上海空间电源研究所 | Membrane electrode frame structure of proton exchange membrane fuel cell |
| SE530190C2 (en) * | 2006-01-17 | 2008-03-25 | Nilar Int Ab | A battery stack arrangement |
| JP5145701B2 (en) * | 2006-11-22 | 2013-02-20 | 日産自動車株式会社 | Bipolar battery |
| JP5790083B2 (en) * | 2011-03-31 | 2015-10-07 | 日産自動車株式会社 | Fuel cell |
| JP5823933B2 (en) * | 2012-08-02 | 2015-11-25 | 株式会社日本自動車部品総合研究所 | Fuel cell |
| AU2014373800B2 (en) * | 2013-12-30 | 2019-03-14 | Gridtential Energy, Inc. | Sealed bipolar battery assembly |
| CN103746123B (en) * | 2014-02-18 | 2016-08-31 | 武汉理工大学 | Dual polar plates of proton exchange membrane fuel cell and the pile of composition thereof |
| WO2017190565A1 (en) * | 2016-05-06 | 2017-11-09 | 安徽巨大电池技术有限公司 | Battery pack and battery cell thereof |
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2017
- 2017-03-24 WO PCT/CN2017/078218 patent/WO2017190565A1/en active Application Filing
- 2017-03-24 CN CN201720305850.1U patent/CN206742354U/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346816A (en) * | 2016-05-06 | 2017-11-14 | 安徽巨大电池技术有限公司 | Battery pack and battery unit thereof |
| CN107346816B (en) * | 2016-05-06 | 2024-03-12 | 安徽巨大电池技术有限公司 | Battery pack and battery unit thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017190565A1 (en) | 2017-11-09 |
| CN107346816B (en) | 2024-03-12 |
| CN107346816A (en) | 2017-11-14 |
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