CN206742296U - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN206742296U CN206742296U CN201720305951.9U CN201720305951U CN206742296U CN 206742296 U CN206742296 U CN 206742296U CN 201720305951 U CN201720305951 U CN 201720305951U CN 206742296 U CN206742296 U CN 206742296U
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- Prior art keywords
- metallic plate
- battery unit
- battery
- battery pack
- seal
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- 230000005489 elastic deformation Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 44
- 238000000926 separation method Methods 0.000 claims description 16
- 239000000565 sealant Substances 0.000 claims description 10
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 21
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 28
- 238000010586 diagram Methods 0.000 description 20
- 238000003825 pressing Methods 0.000 description 9
- 239000008393 encapsulating agent Substances 0.000 description 8
- 239000003792 electrolyte Substances 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000004964 aerogel Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 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
- 239000003566 sealing material Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 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
Classifications
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/2475—Enclosures, casings or containers of fuel cell stacks
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/193—Organic material
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
- H01M8/2485—Arrangements for sealing external manifolds; Arrangements for mounting external manifolds around a stack
-
- 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)
Abstract
The utility model provides a kind of battery pack, and the battery pack includes at least two and stacks the battery unit set, and the shell of battery unit includes upper metallic plate and lower metallic plate, seal is provided between upper metallic plate and lower metallic plate；The metal plate sections of adjacent cell are electrically connected together.Relative to prior art, battery pack provided by the utility model, by in battery unit case end set separated region, when battery unit expands, the separated region can play buffering or eliminate becomes the problem of big due to expanding the battery unit volume brought, in addition in the end set elastic sealing elements of battery unit, when battery unit expands, elastic deformation can occur for elastic sealing elements, can equally play a part of battery cell swell security protection.
Description
Technical field
The technical field of battery manufacture is the utility model is related to, is specifically related to a kind of battery pack.
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
The utility model embodiment provides a kind of battery pack, with solve present in prior art bipolar battery construction due to
Lack safety protection structure and cause the unstable technical problem of battery pack structure.
To solve the above problems, the utility model embodiment provides a kind of battery pack, the battery pack includes at least two
Individual to stack the battery unit set, the shell of the battery unit includes upper metallic plate and lower metallic plate, the upper metallic plate with
Seal is provided between lower metallic plate；The metal plate sections of adjacent cell are electrically connected together.
According to the preferred embodiment of the utility model one, the metallic plate of adjacent cell realizes separation at one end, described close
Sealing is arranged at one end of the metallic plate separation.
According to the preferred embodiment of the utility model one, the metallic plate of adjacent cell is realized at both ends to be separated, described close
Sealing is arranged at the both ends of the metallic plate separation.
According to the preferred embodiment of the utility model one, the seal is made up of elastomeric material.
According to the preferred embodiment of the utility model one, the seal is two layers, and close to battery unit inboard seal
Elastic properties of materials coefficient be more than elastic properties of materials coefficient close to battery unit outer seal.
According to the preferred embodiment of the utility model one, each battery unit includes positive plate, minus plate and located at institute
State the insulating barrier between minus plate and the positive plate.
According to the preferred embodiment of the utility model one, the adjacent metal sheets of adjacent cell are set between the end of separation
Flexible supporter.
According to the preferred embodiment of the utility model one, the elastic support at least may be used on the stacking direction of battery unit
With elastic deformation 15%.
According to the preferred embodiment of the utility model one, the battery pack also includes the adjacent metal for being located at adjacent cell
Circuit board between the end of plate separation.
According to the preferred embodiment of the utility model one, the end periphery of the same metallic plate of battery unit two separation is also sticked and had
Sealant tape.
Relative to prior art, battery pack provided by the utility model, by being separated in battery unit case end set
Region, when battery unit expands, the separated region can play buffering or eliminate due to expanding the battery unit brought
Volume becomes the problem of big, in addition in the end set elastic sealing elements of battery unit, when battery unit expands, elasticity
Elastic deformation can occur for potted component, can equally play a part of battery cell swell security protection.
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 121 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 7th；
Figure 13 is the schematic diagram of battery pack structure variant embodiment in Figure 12 embodiments；
Figure 14 is the schematic diagram of battery pack structure another kind variant embodiment in Figure 12 embodiments；
Figure 15 is the schematic flow sheet of the utility model battery pack assemble method first embodiment；
Figure 16 is the schematic diagram of metallic plate manufacturing process；
Figure 17 is the schematic diagram that metallic plate sets encapsulant；
Figure 18 is the structural representation being pressed together on battery inner core in first method embodiment in metallic plate；
Figure 19 is the schematic flow sheet of the utility model battery pack assemble method second embodiment；
Figure 20 is the first structure schematic diagram being pressed together on battery inner core in second method embodiment in metallic plate；
Figure 21 is the second structural representation being pressed together on battery inner core in second method embodiment in metallic plate；
Figure 22 be in second method embodiment by battery inner core be pressed together on the 3rd structural representation in metallic plate and
Figure 23 is the 4th structural representation being pressed together on battery inner core in second method embodiment in metallic plate.
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 (11,22) 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
Metallic plate and lower metallic plate 110, the metal plate sections of adjacent cell are electrically connected together, i.e., a upper battery unit
Lower metallic plate and the upper metal plate sections of next battery unit be electrically connected together.Based between adjacent cell
Partially electronically conductive connection, each metallic plate 110 can be divided into join domain 111 and separated region 112, wherein, join domain
111 be that the metallic plate of metallic plate and adjacent cell realizes the region being conductively connected, and separated region is metallic plate and phase
The metallic plate of adjacent battery unit realizes the region of separation.In this embodiment, separated region 112 is located at one end of metallic plate 110,
The other end is that join domain 111 is directly linked together, it is preferable that join domain 111 and separated region 112 are structure as a whole,
It 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..
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.
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 121 deforms upon in Fig. 6 embodiments, and dotted line represents the in figure
One 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.
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.
For example, metallic plate in the material thickness of segmental arc 1102 than join domain 111 and/or separated region 112
Thickness 10%-50% is thinned, such as 20%, 25%, 30%, 40% etc. can be thinned.
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
Referring to Figure 12, Figure 12 is the structural representation of the embodiment of the utility model battery pack the 5th, 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 13, Figure 13 is the schematic diagram of battery pack structure variant embodiment in Figure 12 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 14 is referred to, Figure 14 is that battery pack structure is another in Figure 12 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 Figure 14.
Battery pack in above-described embodiment, battery unit are respectively provided with different safety protection structures, including Disengagement zone
Gap, elastic support are set at domain, segmental arc etc. is set between the join domain of metallic plate and separated region, can be risen
To when battery unit expands or is squeezed, offset or alleviate battery unit metallic plate deformation effect, in addition,
Circuit board is also arranged on internal battery pack to improve battery pack space availability ratio, and by setting fluid sealant to bring enhancing to protect
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.
Embodiment of the method 1
In addition, the utility model also provides the assemble method embodiment of battery pack, Figure 15 is referred to, Figure 15 is that this practicality is new
The schematic flow sheet of type battery pack assemble method first embodiment, this method include but is not limited to following steps.
Step S100, multiple battery units being generated, the wherein shell of battery unit includes upper metallic plate and lower metallic plate, on
Seal is provided between metallic plate and lower metallic plate.
Step S110, multiple battery units are stacked and set, and make the conduction of the metal plate sections of adjacent battery unit
Link together, to form battery pack.
In the step of step S100 generates multiple battery units, following process is also specifically included, first in insulating barrier
Upper and lower surface is bonded anode plate and cathode plate respectively, to form battery inner core；Then in the end of upper and lower metallic plate opposite side
Be sticked encapsulant respectively；And battery inner core is pressed together in metallic plate, to form battery unit；Wherein, upper and lower metallic plate
Fit together by encapsulant, and form the accommodating cavity of sealing, battery inner core is in sealing accommodating cavity body.
Figure 16 is referred to, Figure 16 is the schematic diagram of metallic plate manufacturing process, in this step, first has to make metallic plate,
Metallic plate 110 can first be suppressed join domain 111 and separated region 112, two pieces of metallic plates are then passed through into join domain
111 are mutually permanently connected, wherein the gap for needing to ensure between adjacent metal sheets separated region 112 be more than join domain 111 it
Between gap, formed figure shown in structure.The structure is generally known as bipolar plates, the adjacent metal sheets of adjacent cell it
Between by the way of being fixedly connected.In this embodiment, it is straight between the adjacent metal sheets join domain 111 of adjacent cell
What is connect abuts connection, certainly, in other embodiments, also may be used between the adjacent metal sheets join domain 111 of adjacent cell
To be indirectly connected with by conductive materials.The adjacent metal sheets join domain 111 of adjacent cell can be pressed
System together, either weld together or using conductive binder together etc..The adjacent gold of adjacent cell
It is separation between category plate separated region 112, forms gap.This kind of structure can expand in battery unit or by crowded
During pressure, the gap compression formed at separated region 112 is shunk, and can offset or alleviate the deformation of battery unit metallic plate.Separation
Gap effectively can prevent battery unit from being destroyed, ensure electricity equivalent to the safety protection structure of buffering cell-type at region 112
The stability of pond group structure.
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.
Please continue to refer to Figure 17, Figure 17 is the schematic diagram that metallic plate sets encapsulant, and the metallic plate made is relative
The end of side is sticked encapsulant 1205 respectively.Seal is provided between the separated region 112 of the same metallic plate of battery unit two
120, the same adjacent metal sheets of battery unit two sealing can be made to combine to prevent electrolyte leakage.Electrolyte can be solid
, colloid or liquid.Seal 120 can realize that electrochemistry is isolated by the sealing between adjacent cell.
In the case where ensureing to seal timeliness, the material of seal 120 can be possessed good bonding between metal level and have
Any materials of favorable elasticity, for example composite, including rubber-asbestos, aerogel blanket-polyurethane etc.；Rubber type of material or
Person's plastics etc..Also referring to Figure 18, Figure 18 is the structure being pressed together on battery inner core in first method embodiment in metallic plate
Schematic diagram.
Embodiment of the method 2
Figure 19 is referred to, Figure 19 is the schematic flow sheet of the utility model battery pack assemble method second embodiment；The party
Method includes but is not limited to following steps.
Step S200, multiple battery units being generated, the wherein shell of battery unit includes upper metallic plate and lower metallic plate, on
Seal is provided between metallic plate and lower metallic plate.
Step S210, multiple battery units are stacked and set, and make the conduction of the metal plate sections of adjacent battery unit
Link together, to form battery pack；Wherein, upper metallic plate and/or lower metallic plate include join domain and separated region, separation
Region include one into battery unit lateral bend segmental arc, the thickness of segmental arc is thinned.
For a upper embodiment, metallic plate 110 is and upper by that can also be flat construction before pressing step
Metallic plate first extrudes separated region in one embodiment and the situation of join domain is different, is by pressing it in the embodiment
Separated region and join domain are just formed afterwards, i.e., extrude and divide while both sides sealing material is bonded together into seal
From region and join domain structure, and separated region includes one into battery unit in upper and lower metallic plate one or both
The segmental arc of lateral bend, the thickness of segmental arc are thinned, so as to when battery unit expands or is squeezed, the segmental arc
Can be with outstanding, to offset or alleviate the deformation of battery unit metallic plate.
In addition, also referring to Figure 20-Figure 23, Figure 20 is that battery inner core is pressed together on into metallic plate in second method embodiment
Interior first structure schematic diagram, Figure 21 are that the second structure that battery inner core is pressed together in metallic plate in second method embodiment is shown
It is intended to, Figure 22 is that the 3rd structural representation and Figure 23 that battery inner core is pressed together in metallic plate in second method embodiment are
The 4th structural representation being pressed together on battery inner core in second method embodiment in metallic plate.
It is the schematic diagram to form both sides sealing in Figure 20, battery unit structure in Fig. 4 embodiments, mark is formed after pressing
Numbers 110 be metallic plate, and label 1205 is encapsulant (similarly hereinafter)；It is the schematic diagram to form Special-shaped seal components in Figure 21, both sides are set
The encapsulant of different area size has been put, battery unit structure in Fig. 5 embodiments may finally be obtained.Figure 22 is to form one side
The schematic diagram of sealing, battery unit structure in Fig. 3 embodiments is formed after pressing, Figure 23 is to form showing for more seal configurations
It is intended to, battery unit structure in Fig. 7 embodiments is formed after pressing.Assembling on battery pack structure end plates, shell etc.
Process, in the range of the understanding of those skilled in the art, here is omitted.In addition, be related in battery pack assembling process
Encapsulant, metallic plate selection, manufacturing process etc., can be with reference to the phase in foregoing battery pack and battery unit structure embodiment
Close description.
It should be noted that this method embodiment is merely given as making the general assemble method of battery pack, certainly, according to
As can be seen that the structure of battery pack can have much in the above-mentioned battery pack of the utility model and its embodiment of battery unit structure
Kind, but by this method by the simple battery pack for deforming, corresponding deformation structure being obtained, therefore in assemble method
It not will not enumerate in embodiment.For example, specifically can be by separated region located at gold in step S100 and step S200
Belong to one end or both ends of plate；Flexibly supported in the adjacent metal sheets of adjacent cell with setting between the separated region of one end
Body；Circuit board is set between the separated region of one end in the adjacent metal sheets of adjacent cell；In the same gold medal of battery unit two
Same one end separated region periphery of category plate is sticked sealant tape；And multiple seals etc. are set, on these technical characteristics
Detailed description refer to related content in above-mentioned battery embodiment.
The battery pack assemble method provided compared to prior art, the utility model embodiment, is provided with battery unit
Gap, elastic support are set at safety protection structure, including separated region, the join domain of metallic plate and separated region it
Between segmental arc etc. is set, can act as when battery unit expands or is squeezed, offset or alleviate battery unit
The effect of the deformation of metallic plate, in addition, circuit board also is arranged on into internal battery pack to improve battery pack space availability ratio, and lead to
Cross setting fluid sealant and bring enhancing protection and sealing property.
Section Example of the present utility model is the foregoing is only, not thereby limits the scope of protection of the utility model,
Every equivalent device made using the utility model specification and accompanying drawing content or equivalent flow conversion, or directly or indirectly fortune
Used in other related technical areas, similarly it is included in scope of patent protection of the present utility model.
Claims (9)
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.
2. battery pack according to claim 1, it is characterised in that the metallic plate of adjacent cell is realized point at one end
From the seal is arranged at one end of the metallic plate separation.
3. battery pack according to claim 1, it is characterised in that the metallic plate of adjacent cell is realized at both ends to be divided
From the seal is arranged at the both ends of the metallic plate separation.
4. battery pack according to claim 1, it is characterised in that the seal is made up of elastomeric material.
5. battery pack according to claim 3, it is characterised in that the seal is two layers, and in battery unit
The elastic properties of materials coefficient of side seal is more than the elastic properties of materials coefficient close to battery unit outer seal.
6. battery pack according to claim 1, it is characterised in that the adjacent metal sheets of adjacent cell are at the end of separation
Elastic support is provided between portion.
7. battery pack according to claim 6, it is characterised in that stacking direction of the elastic support in battery unit
On at least can be with elastic deformation 15%.
8. battery pack according to claim 1, it is characterised in that the battery pack also includes being located at adjacent cell
Circuit board between the end of adjacent metal sheets separation.
9. battery pack according to claim 1, it is characterised in that the end periphery of the same metallic plate of battery unit two separation
Also being sticked has sealant tape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016101866369 | 2016-03-25 | ||
| CN201610186636 | 2016-03-25 |
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| CN206742296U true CN206742296U (en) | 2017-12-12 |
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| CN201720305951.9U Active CN206742296U (en) | 2016-03-25 | 2017-03-24 | Battery pack |
| CN201710184704.2A Active CN107230796B (en) | 2016-03-25 | 2017-03-24 | Battery pack and method of assembling the same |
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| CN201710184704.2A Active CN107230796B (en) | 2016-03-25 | 2017-03-24 | Battery pack and method of assembling the same |
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| Country | Link |
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| CN (2) | CN206742296U (en) |
| WO (1) | WO2017162213A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107230796A (en) * | 2016-03-25 | 2017-10-03 | 安徽巨大电池技术有限公司 | Battery pack and its assemble method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113346170B (en) * | 2021-05-31 | 2023-05-02 | 宁德新能源科技有限公司 | Battery and electronic device |
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| US5162172A (en) * | 1990-12-14 | 1992-11-10 | Arch Development Corporation | Bipolar battery |
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| US5254415A (en) * | 1992-04-09 | 1993-10-19 | Saft America Inc. | Stacked cell array bipolar battery with thermal sprayed container and cell seal |
| US6908711B2 (en) * | 2002-04-10 | 2005-06-21 | Pacific Lithium New Zealand Limited | Rechargeable high power electrochemical device |
| CN1252844C (en) * | 2003-12-22 | 2006-04-19 | 韩敏芳 | Novel plate assembled solid oxide fuel cell |
| JP5114950B2 (en) * | 2006-02-13 | 2013-01-09 | 日産自動車株式会社 | Battery module, assembled battery, and vehicle equipped with these batteries |
| TW200742158A (en) * | 2006-04-27 | 2007-11-01 | Univ Nat Tsing Hua | Flexible fuel cell structure |
| SE0602739L (en) * | 2006-12-18 | 2008-03-25 | Nilar Int Ab | A system for reducing power in a battery stack arrangement, and a vehicle equipped with such a system |
| CN101752587A (en) * | 2008-12-04 | 2010-06-23 | 上海空间电源研究所 | Preparation method for integrated fuel battery of metal bipolar plate and sealing piece |
| WO2012081173A1 (en) * | 2010-12-16 | 2012-06-21 | パナソニック株式会社 | Battery pack |
| US9553329B2 (en) * | 2011-10-24 | 2017-01-24 | Advanced Battery Concepts, LLC | Bipolar battery assembly |
| 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 |
| CN203503729U (en) * | 2013-09-10 | 2014-03-26 | 日照华轩新能源有限公司 | Battery pack connecting sheet with anti-pulling effect |
| CN203631683U (en) * | 2013-12-06 | 2014-06-04 | 广州微宏电源科技有限公司 | Lithium ion battery pack |
| JP2015115203A (en) * | 2013-12-12 | 2015-06-22 | 日立マクセル株式会社 | Battery pack using laminate type battery |
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- 2017-03-24 WO PCT/CN2017/078214 patent/WO2017162213A1/en active Application Filing
- 2017-03-24 CN CN201720305951.9U patent/CN206742296U/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107230796A (en) * | 2016-03-25 | 2017-10-03 | 安徽巨大电池技术有限公司 | Battery pack and its assemble method |
| CN107230796B (en) * | 2016-03-25 | 2023-10-27 | 安徽巨大电池技术有限公司 | Battery pack and method of assembling the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107230796A (en) | 2017-10-03 |
| CN107230796B (en) | 2023-10-27 |
| WO2017162213A1 (en) | 2017-09-28 |
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