CN209434340U - The device of battery unit and the battery case for manufacturing battery unit - Google Patents
The device of battery unit and the battery case for manufacturing battery unit Download PDFInfo
- Publication number
- CN209434340U CN209434340U CN201790001077.8U CN201790001077U CN209434340U CN 209434340 U CN209434340 U CN 209434340U CN 201790001077 U CN201790001077 U CN 201790001077U CN 209434340 U CN209434340 U CN 209434340U
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- China
- Prior art keywords
- storage element
- receiving unit
- battery
- electrolyte storage
- battery unit
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000003792 electrolyte Substances 0.000 claims abstract description 91
- 238000003860 storage Methods 0.000 claims abstract description 79
- 239000004020 conductor Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 238000005868 electrolysis reaction Methods 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 239000007774 positive electrode material Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910032387 LiCoO2 Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4214—Arrangements for moving electrodes or electrolyte
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/673—Containers for storing liquids; Delivery conduits therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/12—Deep-drawing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—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
- Y02E60/10—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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The device of battery unit and the battery case for manufacturing battery unit.A kind of battery unit includes: electrode assembly comprising cathode, anode and plants separation membrane between a cathode and an anode；And the battery case of laminate, it includes receiving unit, electrode assembly is embedded in the receiving unit, wherein, the structure that there is the receiving unit laminate to be recessed to depth corresponding with the height of electrode assembly, and at least one electrolyte storage element additionally with the electrolyte being embedded is configured to according to the knot being connected to the receiving unit at least one side in multiple sides of the side surface towards electrode assembly of the receiving unit.
Description
Technical field
The utility model relates to a kind of with the secondary cell for passing through the improved life characteristic of electrolyte storage member.
Background technique
As mobile device is increasingly advanced and increase in demand to these mobile devices, to as these mobile devices
The demand of secondary cell of the energy also sharply increase.In these secondary cells, lithium secondary battery have high-energy density,
High voltage, long circulation life and low self-discharging rate have been commercialized and have been widely used.
In general, including lithium salts (example by planting the Porous partitions based on polyolefin between cathode and anode and utilizing
Such as, LiPF6) nonaqueous electrolytic solution dipping cathode and anode manufacture lithium secondary battery, wherein metal oxide (for example,
LiCoO2) it is used as positive electrode active materials, and carbon material is used as negative electrode active material.
When charging to lithium secondary battery, lithium ion is discharged from positive electrode active materials, is then introduced into the carbon-coating of cathode
In.When discharging lithium secondary battery, lithium ion is discharged from the carbon-coating of cathode, is then introduced into positive electrode active materials.It is non-
Water electrolysis liquid is used as the medium for moving lithium ion between a positive electrode and a negative electrode.
During the operation of secondary cell, constantly consumed by the side reaction at cathode and by the oxidation at anode
Electrolyte.However, secondary cell can not show desired chemical property if excessive electrolyte is consumed, and
The service life of secondary cell sharply shortens.
In addition, excessive electrolyte is introduced in electrode assembly to solve the above problems when manufacturing battery unit
In the case of, the electrode plate for constituting electrode assembly is separated from each other, and thus the resistance of electrode assembly increases.As a result, the longevity of battery unit
Order deterioration in characteristics.
Therefore, there is an urgent need to be able to solve the technology of the above problem.
Utility model content
Technical problem
Made the utility model with solve the above problems and it is other not yet solve the technical issues of.
Specifically, the purpose of this utility model is to provide a kind of battery unit, which is configured with this
The structure of sample: forming the electrolyte storage element being connected to the receiving unit for being equipped with electrode assembly in the cell housing, so as to
Further storage is supplied to the electrolyte of electrode assembly, and thus the service life of battery unit increases.
Technical solution
One side according to the present utility model, above and other purpose can realize by providing a kind of battery unit, should
Battery unit includes: electrode assembly comprising anode, the separator of cathode and plant between a positive electrode and a negative electrode；And electricity
Pond shell is provided with receiving unit, and electrode assembly is installed in the receiving unit, and the battery case is by laminate system
At, wherein receiving unit is configured with the structure that laminate is recessed to depth corresponding with the height of electrode assembly, and
And at least one of the side of side surface towards electrode assembly of receiving unit is provided at least one electrolyte storage list
Member is with for further storing electrolyte, which is configured as being connected to receiving unit.
That is, being connected to and having with the receiving unit for being equipped with electrode assembly in battery unit according to the present utility model
The electrolyte storage element of hollow structure is formed in the side of receiving unit, so that electrolyte is stored in electrolyte storage element
In, wherein the electrolyte being stored in electrolyte storage element is supplied to electrode assembly.It is therefore possible to prevent due to battery list
Exhausting for electrolyte caused by the recharge of member and electric discharge, thus can improve the life characteristic of battery unit.
As in greater detail, electrolyte storage element defined in the utility model is not meant as battery with reference to the accompanying drawings
Inactive region in shell, for example, the capacity with secondary cell is unrelated, but the space (example that must inevitably ensure
Such as, it is formed with the part of contact conductor).
In specific example, the outer edge of battery case may be provided at by the hermetic unit that heat fusion is formed, and
Electrolyte storage element can be configured to the structure that there is a part of side to extend towards hermetic unit.
Specifically, there is rectangular configuration when receiving unit can be configured to see in the plan view, the side of receiving unit can
Including the first side, the second side and third side, each side corresponds to hermetic unit, the second side and third side and the
The opposite end of one side is adjacent in vertical direction, and at least one electrolyte storage element may be formed in each side
To be protruded outward from it.
In addition, electrolyte storage element can be configured to have hexahedral shape, and electrolyte storage element can include:
First surface, at the part outstanding of each side with the borderless contact of the side；Second surface, with first surface phase
It is right；And third surface, be arranged on the outer surface of battery case in the state of being parallel to receiving unit with the first table
Face and second surface are adjacent in vertical direction.
In view of passing through deep-draw (deep drawing) Lai Lashen laminate, so that the electrolyte with hexahedron structure
The fact that storage element is connected to receiving unit, the height of electrolyte storage element can be equal to the 40% of the depth of receiving unit
To 100%.In the case where the height of electrolyte storage element is less than the 40% of the depth of receiving unit, it is difficult to store sufficient amount
Electrolyte.It is therefore preferable that the height of electrolyte storage element is set as the value in above range, to maintain electrolyte to store up
The shape of memory cell.
Specifically, third surface may be formed to have third surface tapered from first surface to second surface (taper)
Structure, and can be equal to the line with first surface and third plane tangent with the length of second surface and the line of third plane tangent
Length 60% to 90%.
Here, tapered configuration is understood to be the distance between the retive boundary on third surface from first surface to the second table
The structure that face is gradually reduced.
It can be equal to the 5% to 15% of the width of receiving unit with the length of first surface and the line of third plane tangent.
The length on third surface can in the range of 1mm to 10mm so that the second surface towards hermetic unit not with it is close
Envelope part is overlapping.
In specific example, the contact conductor for being electrically connected to electrode assembly can be from the corresponding with the first side of battery case
Edge protrudes outward, and the electrolyte storage element being located at the first side may be formed at axis identical with contact conductor
On.
In view of the receiving unit of battery case has the fact that rectangular configuration, receiving unit includes four edges.In general,
In pouch-shaped battery shell, a part bending of laminate, and three sides of laminate are co-melted to form sealing
Point.As can be seen that be formed as the side towards bending part be the first side and with the opposite end of the first side vertical
Adjacent side is the second side and third side on direction.
In this case, two electrical leads are made only in the side of battery case.However, in contact conductor opposite
In opposite side situation outstanding on direction from battery case, contact conductor may be formed at corresponding with the second side or third side
Position at.
Contact conductor has V shaped portion, and each of multiple electrodes connector is curved according to V shape at the V shaped portion
Song is by being connected to contact conductor weldedly.When external force is applied to V shaped portion, electrode contact and contact conductor it
Between connection be released, thus the safety of battery unit can reduce.
Therefore, electrolyte storage element is formed on the outer surface corresponding with V shaped portion of battery case, and is electrolysed
Liquid is injected into electrolyte storage element, and the impact that V shaped portion is thus applied to due to external force can reduce, thus can be true
Protect the safety of battery unit.
Due to the characteristic of laminate flexible, it is difficult to not only in the first side corresponding with the edge of side and second side
At the contact point of the contact point in portion and the first side and third side, and electricity is formed at the part adjacent with the edge
Solve liquid storage element.
In view of above situation, the electrolyte storage element being formed in each side can be arranged to the first side and
The adjacent part spaced apart in the contact point of the adjacent part in the contact point of second side or the first side and third side
Preset distance.Two or more electrolyte storage elements being formed in each side can be arranged to be separated from each other.
Electrolyte storage element can be formed simultaneously when forming receiving unit by deep-draw laminate.It alternatively, can be
Forming receiving unit by deep-draw laminate, pass through additional process forms electrolyte storage element in receiving unit later.
Another aspect according to the present utility model provides a kind of for manufacturing the device of the battery case of battery unit.
For manufacturing the device of battery case can include: formed punch is used to suppress the laminate for battery case to pass through deep-draw
Technique forms receiving unit and electrolyte storage element；Stent is used for during deep-draw technique that laminate is fixed just
Position；And block mould, it is provided with recess, the shape of the recess and the shape of formed punch are corresponding.
Detailed description of the invention
Fig. 1 is the schematic diagram of the battery unit of embodiment according to the present utility model；
Fig. 2 is the partial enlarged view for showing a part of battery unit for the electrolyte storage element for being formed with Fig. 1；And
Fig. 3 is the schematic diagram of the battery unit of another embodiment according to the present utility model.
Specific embodiment
Now, the illustrative embodiments of the utility model be will be described in detail with reference to the accompanying drawings.It is to be noted, however, that
The scope of the utility model is not limited by illustrated embodiment.
Fig. 1 is the schematic diagram of the battery unit of embodiment according to the present utility model.
Referring to Fig.1, include: battery case 110 by the battery unit that label 100 indicates, be provided with and receiving unit 120
The electrolyte storage element 130 and 140 of connection；Contact conductor 101 is being electrically connected to the electricity being mounted in receiving unit 120
It is protruded outward in the state of the component (not shown) of pole from battery case 110；And insulating film 102, draw being plugged on electrode
The upper and lower surfaces of contact conductor 101 are attached in the state of between line 101 and battery case 110.
Battery case 110 includes the upper housing 111 formed and being bent a side section 104 of single laminate
With lower case (not shown).The receiving unit 120 of electrode assembly is installed and is connected to receiving unit 120 for further
The electrolyte storage element 130 and 140 for storing electrolyte is arranged in upper housing 111, and upper housing 111 and lower case exist
The outer edge of battery case 110 other than bending part 104 is co-melted to form hermetic unit 103.
Receiving unit 120 is configured with the rectangular configuration for being recessed to depth corresponding with the height of electrode assembly.It connects
Unit 120 of receiving includes the first side 121, the second side 122 and third side 123.With the contact conductor 101 from its of receiving unit
The corresponding side in part outstanding is the first side 121.Side 122 and 123 is with the opposite end of the first side 121 vertical
It is adjacent on direction.Second side 122 is located at the left end of the first side 121, and third side 123 is located at the first side 121
Right end at.
First side 121 includes two electrolyte storage elements 130 and 140.Electrolyte storage element 130 and 140 is from
One side 121 is prominent towards hermetic unit 103.The electrolyte in electrolyte storage element 130 and 140 is stored in arrow meaning
The side shown is upward through the mobile electrode assembly to be further supplied in receiving unit 120 of connected component.
Contact conductor 101 is prominent from the edge corresponding with the first side 121 of battery case 110.Electrolyte storage element
130 are formed as sharing identical axis Y with contact conductor 101, and electrolyte storage element 140 is formed as and contact conductor
101 share identical axis Y '.
Fig. 2 is the partial enlarged view for showing a part for the battery unit for being formed with one of electrolyte storage element of Fig. 1
(130A)。
Referring to Fig. 2 and Fig. 1, electrolyte storage element 130 is configured with hexahedron structure, and from the first side
121 protrude outward towards hermetic unit 103.Electrolyte storage element 130 includes: first surface 131, with the first side 121
Contact；Second surface 132 is opposite with first surface 131；And third surface 133, the outer of battery case 110 is set
On surface in the state of being parallel to receiving unit 120 with first surface 131 and second surface 132 phase in vertical direction
It is adjacent.
First surface 131 is positioned at direction of the electrolyte indicated by arrow being stored in electrolyte storage element 130
On surface in the path in receiving unit 120 and drilled is introduced in along it.
When describing the first of electrolyte storage element 130 to third surface, in first surface 131 and second surface 132
Each be rectangle, and the height of second surface 132 be equal to electrolyte storage element 130 height H.
Third surface 133 is formed to have tapered configuration, and wherein the distance between the retive boundary on third surface is from first
Surface 131 is gradually reduced to second surface 132.In the starting point and 133 phase of first surface 131 and third surface of retive boundary
The line L cut1Length be set to be greater than retive boundary terminal point and second surface 132 and third surface 133 it is tangent
Line L2Length.
In addition, referring to Fig.1 and Fig. 2, the tangent line L with first surface 131 and third surface 1331Length can be set
It is set to 5% to 15% range without departing from the width W for being equal to receiving unit.
Electrolyte storage element 130 from the degree outstanding of the first side 121 can the length based on third surface 133 come really
It is fixed.Here, the Length Indication on third surface 133 is from first surface 131 to the distance of second surface 132.The length on third surface 133
Degree h can be set to 10mm or smaller, so that second surface 132 is not overlapping with hermetic unit 103.
Electrolyte storage element is formed in the surplus space limited between the receiving unit of battery case and hermetic unit.
Therefore, the feelings for the degree that electrolyte storage element and hermetic unit overlap are set in electrolyte storage element degree outstanding
Under condition, the binding force of hermetic unit may reduce, this reduces the safety of battery unit.Therefore, second surface 132 and sealing
Part 103 needs the preset distance that is separated from each other.
Fig. 3 is the schematic diagram of the battery unit of another embodiment according to the present utility model.
Referring to Fig. 3, includes: battery case 210 by the battery unit that label 200 indicates, be provided with and receiving unit 220
The electrolyte storage element 230,240,250,260,270 and 280 of connection；Contact conductor 201；And insulating film 202, it is inserted
It sets between contact conductor 201 and battery case 210.
Receiving unit 220 includes the first side 221, the second side 222 and third side 223.Two electrolyte storages are single
Member 230 and 240 is formed in the contact conductor 201 of receiving unit from corresponding first side 221 in its part outstanding, and two
A electrolyte storage element 250 and 260 is formed in second side adjacent in vertical direction with the left end of the first side 221
In 222, two electrolyte storage elements 270 and 280 are formed in adjacent in vertical direction with the right end of the first side 221
In three sides 223.
As reference, compare the battery unit of Fig. 3 and the battery unit of Fig. 1, the battery unit of Fig. 3 and the battery list of Fig. 1
Member the difference is that, electrolyte storage element is further formed in the second side and third side.
The electrolyte storage element being formed in each side is arranged to and the first side 221 and the second side 222
The contact point 221a or contact point 221b of the first side 221 and third side 223 is spaced apart preset distance.
In the case where laminate is stretched to form electrolyte storage element at the contact point of side, it is difficult to tie up
Hold the shape of electrolyte storage element.In addition, being mounted in receiving unit in the case where forming individual space at contact point
Electrode assembly may shake, thus electrode assembly may be damaged due to external impact.
In addition, excessive stress may concentrate on layer while laminate is stretched due to the characteristic of laminate
On the specific part of tabletting material.Distance between electrolyte storage element is set in lesser situation, is electrolysed being formed
Laminate may be torn while liquid storage element.
Therefore, be formed in electrolyte storage element 230 and 240 in the first side 221 and corresponding contact point 221a and
221b is spaced apart preset distance, meanwhile, electrolyte storage element 230 and 240 is also separated from each other preset distance.
In an identical manner, the electrolyte storage element 250 and 260 and contact point 221a being formed in the second side 222
Or bending part 204 is spaced apart preset distance, and electrolyte storage element 250 and 260 is also separated from each other preset distance.Separately
Outside, the electrolyte storage element 270 and 280 and contact point 221b that are formed in third side 223 or bending part 204 are spaced
Open preset distance, and electrolyte storage element 270 and 280 is also separated from each other preset distance.
Previously described electrolyte storage element can be formed simultaneously when forming receiving unit by deep-draw laminate.
Alternatively, receiving unit can be formed by deep-draw laminate, then can form electricity in receiving unit by additional process
Solve liquid storage element.However, it is contemplated that the property for the laminate being fabricated from a flexible material, is preferably forming the same of receiving unit
When formed electrolyte storage element.
Although disclosing preferred embodiments of the present invention for exemplary purposes, it will be understood by those skilled in the art that
In the case where not departing from the scope of the utility model disclosed in the accompanying claims and spirit, can carry out various modifications,
Addition and replacement.
Industrial applicibility
As is apparent from the above description, in battery unit according to the present utility model, in the side of receiving unit
It is middle to form the electrolyte storage element that hollow structure is connected to and had with the receiving unit for being equipped with electrode assembly, so that electrolyte
It is stored in electrolyte storage element, wherein the electrolyte being stored in electrolyte storage element is supplied to electrode assembly.
It is therefore possible to prevent the electrolyte due to caused by the recharge of battery unit and electric discharge exhausts, battery list thus can be improved
The life characteristic of member.
Claims (14)
1. a kind of battery unit, which is characterized in that the battery unit includes: electrode assembly, which includes anode, cathode
And it is plugged on the separator between the anode and the cathode；And battery case, it is single which is provided with receiving
Member, the electrode assembly are installed in the receiving unit, and the battery case is made of laminate, wherein
The receiving unit is configured with the laminate and is recessed to depth corresponding with the height of the electrode assembly
Structure, and
At least one of the side of side surface towards the electrode assembly of the receiving unit is provided at least one electricity
Liquid storage element is solved so that for further storing electrolyte, the electrolyte storage element is configured as connecting with the receiving unit
It is logical.
2. battery unit according to claim 1, which is characterized in that the hermetic unit formed by heat fusion is arranged in institute
The outer edge of battery case is stated, and wherein, the electrolyte storage element is configured with a part of the side
The structure extended towards the hermetic unit.
3. battery unit according to claim 2, which is characterized in that
There is rectangular configuration when the receiving unit is configured as seeing in the plan view,
The side of the receiving unit includes the first side, the second side and third side, and each side corresponds to described
Hermetic unit, second side and the third side are adjacent in vertical direction with the opposite end of first side,
And
At least one electrolyte storage element is formed in each side to protrude outward from the side.
4. battery unit according to claim 3, which is characterized in that
The electrolyte storage element is configured with hexahedral shape, and
The electrolyte storage element include at each side part outstanding with the borderless contact of the side
First surface, the second surface opposite with the first surface and it is arranged on the outer surface of the battery case parallel
The third surface adjacent in vertical direction with the first surface and the second surface in the state of the receiving unit.
5. battery unit according to claim 4, which is characterized in that the height of the electrolyte storage element is equal to described
The 40% to 100% of the depth of receiving unit.
6. battery unit according to claim 4, which is characterized in that
The third surface is formed to have the third surface structure tapered to the second surface from the first surface,
And
It is equal to and the first surface and the third table with the length of the second surface and the line of the third plane tangent
The 60% to 90% of the length of the tangent line in face.
7. battery unit according to claim 6, which is characterized in that with the first surface and the third plane tangent
Line length be equal to the receiving unit width 5% to 15%.
8. battery unit according to claim 4, which is characterized in that the length on the third surface is in 1mm to 10mm's
In range, so that the second surface is not overlapping with the hermetic unit.
9. battery unit according to claim 3, which is characterized in that
Be electrically connected to the contact conductor of the electrode assembly from the edge corresponding with first side of the battery case to
Outer protrusion, and
The electrolyte storage element at first side is formed on axis identical with the contact conductor.
10. battery unit according to claim 3, which is characterized in that the electrolysis being formed in each side
Liquid storage element is arranged to the part or described adjacent with the contact point of first side and second side
The adjacent part spaced apart preset distance in the contact point of one side and the third side.
11. battery unit according to claim 3, which is characterized in that be formed in each side two or more
Multiple electrolyte storage elements are arranged to be separated from each other.
12. battery unit according to claim 1, which is characterized in that described being formed by laminate described in deep-draw
When receiving unit, it is formed simultaneously the electrolyte storage element.
13. battery unit according to claim 1, which is characterized in that described being formed by laminate described in deep-draw
After receiving unit, the electrolyte storage element is formed in the receiving unit by additional process.
14. a kind of for manufacturing the device of the battery case of battery unit, which is characterized in that the device includes:
Formed punch, the formed punch be used to suppress the laminate for the battery case with by deep-draw technique formation receiving unit with
Electrolyte storage element；
Stent, the laminate for being secured in position by the stent during the deep-draw technique；And
Block mould is provided with recess in the block mould, and the shape of the recess is corresponding with the shape of the formed punch.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160179772A KR102129768B1 (en) | 2016-12-27 | 2016-12-27 | Secondary Battery of Improved Life Characteristics By Strorage Member For Electrolyte |
| KR10-2016-0179772 | 2016-12-27 | ||
| PCT/KR2017/015170 WO2018124616A1 (en) | 2016-12-27 | 2017-12-21 | Secondary battery having improved lifespan by using electrolyte storage member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209434340U true CN209434340U (en) | 2019-09-24 |
Family
ID=62709772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201790001077.8U Active CN209434340U (en) | 2016-12-27 | 2017-12-21 | The device of battery unit and the battery case for manufacturing battery unit |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102129768B1 (en) |
| CN (1) | CN209434340U (en) |
| WO (1) | WO2018124616A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097614A (en) * | 2021-03-29 | 2021-07-09 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210079084A (en) * | 2019-12-19 | 2021-06-29 | 주식회사 엘지에너지솔루션 | Secondary battery and method for manufacturing the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5474545B2 (en) * | 2006-08-21 | 2014-04-16 | エルジー・ケム・リミテッド | Small sachet type secondary battery with improved safety and superior manufacturing process characteristics |
| KR101549169B1 (en) * | 2012-05-31 | 2015-09-01 | 주식회사 엘지화학 | An electrochemical device including capsule containing electrolyte |
| KR101443832B1 (en) * | 2012-08-07 | 2014-09-23 | 주식회사 엘지화학 | A manufacturing Apparatus for Secondary Battery Case and Method for preparation of the same |
| KR20160111614A (en) * | 2015-03-17 | 2016-09-27 | 주식회사 엘지화학 | A Battery Cell having Venting Part at The Sealing Part |
| KR101936074B1 (en) * | 2015-05-12 | 2019-01-09 | 주식회사 엘지화학 | Battery Cell Comprising Electrolyte-Containing Member for Supplying Electrolyte |
-
2016
- 2016-12-27 KR KR1020160179772A patent/KR102129768B1/en active IP Right Grant
-
2017
- 2017-12-21 WO PCT/KR2017/015170 patent/WO2018124616A1/en active Application Filing
- 2017-12-21 CN CN201790001077.8U patent/CN209434340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097614A (en) * | 2021-03-29 | 2021-07-09 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102129768B1 (en) | 2020-07-03 |
| WO2018124616A1 (en) | 2018-07-05 |
| KR20180075874A (en) | 2018-07-05 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20211228 Address after: Seoul, South Kerean Patentee after: LG Energy Solution,Ltd. Address before: Seoul, South Kerean Patentee before: LG CHEM, Ltd. |
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| TR01 | Transfer of patent right |