CN107275524A - battery cell - Google Patents
battery cell Download PDFInfo
- Publication number
- CN107275524A CN107275524A CN201710197391.4A CN201710197391A CN107275524A CN 107275524 A CN107275524 A CN 107275524A CN 201710197391 A CN201710197391 A CN 201710197391A CN 107275524 A CN107275524 A CN 107275524A
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- China
- Prior art keywords
- battery
- case member
- anode
- battery cell
- case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012212 insulator Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 19
- 239000004020 conductor Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 12
- 239000011149 active material Substances 0.000 description 11
- 239000010408 film Substances 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 6
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000012447 hatching Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000004804 winding Methods 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
- H01M10/04—Construction or manufacture in general
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
-
- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
-
- 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
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
-
- 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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- 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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
-
- 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
- H01M50/543—Terminals
- H01M50/545—Terminals formed by the casing of the cells
-
- 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
- H01M10/44—Methods for charging or discharging
-
- 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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention relates to battery cell(2), it includes battery case(3), electrode unit is arranged in battery case(10), wherein, electrode unit(10)With with negative terminal(11)The anode of connection(21)With with positive terminal(12)The negative electrode of connection(22), it is characterised in that electrode unit(10)Electrode stack is configured to, the electrode stack has anode(21)Multiple layers and negative electrode(22)Multiple layers, these layers are by along stacking direction(x)Overlappingly stack up and down, and battery case(3)Be configured to it is prismatic, wherein, the battery case(3)All faces be parallel to stacking direction(x)Or and stacking direction(x)Extend at a right angle, and battery case(3)With foring negative terminal(11)The first case member(61)With form positive terminal(12)The second case member(62).
Description
Technical field
The present invention relates to battery cell, it includes battery case, and electrode unit is arranged in the battery case, wherein, should
Electrode unit has the anode being connected with negative terminal and the negative electrode being connected with positive terminal.
Background technology
Electric energy can be stored by battery pack.The reaction of chemistry can be converted into electric energy by battery pack.Here, primary cell group
It is different with secondary battery group.Only once function is effective for primary cell group, and the also referred to as secondary battery group of battery
It can charge again.So-called lithium ion battery Battery pack is especially used in battery.In addition, this Li-ion batteries piles electricity
Pond is characterised by very high energy density, heat endurance and minimum self discharge.
Lithium ion battery Battery pack has the also referred to as positive electrode of negative electrode and the also referred to as negative electrode of anode.It is cloudy
Pole and anode include each electric conductor, and active material is installed on the electric conductor.The electrode of battery cell is constructed
Into film shape and in the case where middle ware is separated with separator(Separator separates anode with negative electrode)It is rolled into an electrode winding
Or it is stacked into the electrode stack of multiple electrodes layer.Two electrodes of electrode unit and the pole of battery cell are electrically connected,
The pole is also referred to as terminal.Electrode and separator are surrounded by the electrolyte of usual liquid.
The battery cell of type for example as belonging to known to the A1 of DE 10 2,012 223 796, it include with anode and
The electrode unit of negative electrode.Battery cell herein have battery case, battery case be for example made of metal and be configured to it is prismatic,
It is particularly square.Anode and negative electrode are connected by current-collector with terminal, and these current-collectors are disposed in outside battery case.
A kind of battery cell as known to US 2012/0276437, it has electrode stack, and the electrode stack is disposed in
In the shell of metal.The shell includes two case members herein, and these case members are electrically insulated from each other by sealing.Cell stacks
Anode and negative electrode have contact flag piece herein, and contact flag piece is electrically connected with each case member.Therefore case member forms battery
The terminal of Battery pack.
A kind of battery cell as known to JP 2011-154784, it has the electrode stack being arranged in the shell of metal.
The shell equally includes two case members herein, and case member forms the terminal of battery cell.
The content of the invention
It is recommended that a kind of battery cell, particularly lithium ion battery Battery pack, it includes arranging in battery case, battery case
Electrode unit.Electrode unit have herein the anode that negative terminal with battery cell electrically connects and with battery cell just
Terminal electrical connection negative electrode.
According to the present invention, the electrode unit is configured to electrode stack, and it has multi-layered anode and multilayer cathode.Anode
Layer and the layer of negative electrode stackedly stacked along stacking direction herein.Battery case be configured to it is prismatic, wherein, battery case it is all
Face be parallel to or perpendicular to stacking direction extension.Battery case has the first case member for forming negative terminal and formed positive
Second case member of terminal.
Within a context, such body portion is referred to as prism, i.e. its lateral length is equally long, and its basal plane
It is polygonal.The battery case of battery cell has the shape of straight prism herein, wherein, the basal plane and electrode of the prism
The stacking direction of unit is at a right angle.
According to the favourable structural scheme of the present invention, form the first case member of negative terminal and form positive
Second case member of terminal is configured to conduction, particularly metal.First case member and the second case member can lead to herein
Circular insulator is crossed to be electrically insulated from each other.
The insulator is advantageously extend into attaching element, the attaching element have cooling duct and/or voltage jointer and/
Or sensor.Therefore attaching element is connected with the battery case of battery cell securely.
According to the favourable modification of the present invention, there is anode contact flag piece and negative electrode to have contact flag piece.
Here, contact flag piece of the contact flag piece of anode with negative electrode is stretched on opposed sidepiece from the electrode unit for being configured to electrode stack
Go out.
The contact flag piece of anode is preferably directly connected with the first case member herein.The contact flag piece of negative electrode is also, it is preferred that directly
It is connected with the second case member.It is therefore preferred to, it is not necessary to and do not use extra by contact that flag piece and case member connect
Current-collector.
According to a kind of favourable structural scheme of the present invention, contact flag sheet material engagement ground and the first case member of anode connect
Connect.Equally, the contact flag piece of negative electrode is advantageously connected with the engagement of second shell component materials.
According to another favourable structural scheme of the invention, the contact flag plate shape of anode ordinatedly connects with the first case member
Connect.Equally, the contact flag piece of negative electrode is advantageously ordinatedly connected with second shell component shape.
According to the favourable modification of the present invention, the basal plane at a right angle with stacking direction of prismatic battery case
Shape with hexagon.
According to another favourable modification of the present invention, the first case member has the protuberance of protrusion.Second case member
It is same that there is the protuberance protruded.The electrical contact of the case member for the terminal to form battery cell is facilitated by the protuberance of protrusion.
Electric vehicle is used advantageously in by the battery cell of the present invention(EV), mixed motor-car(HEV), it is plug-in mixed dynamic
Vehicle(PHEV), particularly be used to stabilizing static battery pack, the maritime applications of household power system(Such as shipbuilding or motor boat)
In battery pack or aerospace applications(Especially in aircraft manufacturing)Battery pack in.It is also contemplated that other applications.
Invention advantage
By the structural scheme by the present invention of battery cell, the available appearance of electrochemistry in battery case is beneficially improved
Product.When the contact flag piece of electrode is directly connected with case member, therefore extra current-collector is not needed to connect the electrodes on terminal
When, this puts especially suitable.The volume saved for example can be used in external sensing device or for cooling system.In addition,
The connection of multiple battery cells to each other is realized when effectively making full use of available volume.
By the way that the contact flag piece of electrode is arranged on opposed sidepiece, the current density in electrode unit is homogenized,
This causes the service life of battery cell to extend.
Brief description of the drawings
Embodiments of the present invention are explained in further detail by means of accompanying drawing and following explanations.
Diagram:
Fig. 1 is the schematic cross sectional view of battery cell;
Fig. 2 is the schematic diagram of the local transparent of the battery cell by one embodiment;
Fig. 3 is the schematic diagram of a section of the electrode for the battery cell in Fig. 2;
Fig. 4 is the schematic diagram of the local transparent of the battery cell by second embodiment;
Fig. 5 is the schematic diagram of a section of the electrode for the battery cell in Fig. 4;
Fig. 6 is the schematic diagram of the local transparent of the battery cell by the 3rd embodiment;
Fig. 7 is the schematic diagram of the local transparent of the battery cell by the 4th embodiment;
Fig. 8 a and 8b are the schematic cross sectional views of battery cell, and it has a possible company of contact flag piece and case member
Connect;
Fig. 9 is the schematic cross sectional view of battery cell, and it has another possible connection of contact flag piece and case member;
Figure 10 is the schematic cross sectional view of battery cell, and it has another possible connection of contact flag piece and case member;
Figure 11 is the schematic cross sectional view of battery cell, and it has another possible connection of contact flag piece and case member;
Figure 12 is the schematic cross sectional view of battery cell, and it has the company of the yet further possibility of contact flag piece and case member
Connect;
Figure 13 is the schematic detailed view of the local transparent of Fig. 2 battery cell, and it carries attaching element;And
Figure 14 is the schematic cross sectional view of Figure 13 battery cell.
Embodiment
In the following explanation to embodiments of the present invention, same or similar element all uses identical reference
Mark, wherein, the repeat specification to these elements is eliminated on rare occasion.The accompanying drawing shown schematically only illustrates the present invention
Theme.
Fig. 1 is the schematic cross sectional view of battery cell 2.Battery cell 2 includes battery case 3, and battery case is configured to
Conductive.Battery case 3 has the first case member 61 and the second case member 62, and they are exhausted by electricity each other by circular insulator 50
Edge.The case member is made up of metal such as aluminium.First case member 61 forms the negative shape of 11 and second case member of terminal 62
Into positive terminal 12.The voltage provided by battery cell 2 can be taken by terminal 11,12.Battery cell 2 is in addition
It can be electrically charged by terminal 11,12.
The electrode unit 10 for being configured to electrode stack, the electrode unit are arranged inside the battery case 3 of battery cell 2
With two electrodes, that is, anode 21 and negative electrode 22.Anode 21 and negative electrode 22 are respectively configured to film shape and had respectively multiple
Layer.The layer of anode 21 and the layer of negative electrode 22 are in the case of the separator 18 of each thin film shape of midfeather by along stacking side
Stackedly stacked to x.
Battery case 3 is configured to prismatic.Battery case 3 has basal plane and capping herein, their congruence overlappings, and they that
This is parallel and is orientated at a right angle with stacking direction x.In addition, battery case 3 has multiple sides, these are sideways parallel to stacking
Direction x is orientated.
Anode 21 includes the active material 41 of anode, and the active material is configured to film shape.Anode 21 also includes conduction
Body 31, the electric conductor is similarly configured to film shape and is that energy is conductive.The active material 41 of anode is disposed in anode currently
The both sides of 21 electric conductor 31 and it is connected with this electric conductor.Negative electrode 22 includes the active material 42 of negative electrode, the active material quilt
It is configured to film shape.Negative electrode 22 also includes electric conductor 32, and the electric conductor is equally configured to film shape and is that energy is conductive.It is cloudy
The active material 42 of pole is currently being disposed in the both sides of the electric conductor 32 of negative electrode 22 and is being connected with this electric conductor.
The electric conductor 31 of the layer of anode 21 has the contact flag piece 35 of anode 21 in end regions respectively, these contact flags
Piece stretches out from electrode unit 10.The electric conductor 32 of the layer of negative electrode 22 has the contact flag piece of negative electrode 22 in end regions respectively
36, these contact flag pieces stretch out from electrode unit 10.The flag of the contact with negative electrode 22 piece 36 of contact flag piece 35 of anode 21 is herein
Y stretches out on opposed sidepiece from electrode unit 10 in a longitudinal direction.Longitudinal direction y is herein perpendicular to the stacking direction
x.Next the horizontal direction z and stacking direction x also used is at a right angle and at a right angle with longitudinal direction y.
The contact flag piece 35 of anode 21 be directed to the first case member 61 and in negative coupled position 71 with this first shell
Part is connected.Therefore the negative terminal 11 of battery cell 2 is electrically connected with anode 21.The contact flag piece 36 of negative electrode 22 is directed to
Two case members 62 and it is connected in positive coupled position 72 with this second case member.Therefore, the positive terminal of battery cell 2
12 electrically connect with negative electrode 22.
Fig. 2 shows the schematic diagram of the local transparent of the battery cell 2 by one embodiment.The basal plane of battery case 3
There is the shape of hexagon herein.Battery case 3 has two sides being orientated at a right angle with longitudinal direction y.Battery case 3 is additionally
With two sides being orientated at a right angle with horizontal direction z.Battery case 3 also has two and existed with longitudinal direction y and horizontal direction z
It is in currently the inclined side of 45° angle.There is negative coupled position 71, the contact of anode 21 at one of place of the two sides
Flag piece 35 is connected at the negative coupled position with the first case member 61.There is positive connection at another of the two sides
Position 72, the contact flag piece 36 of negative electrode 22 is connected at the positive coupled position with the second case member 62.
Fig. 3 shows signal electrode, in a current section for negative electrode 22 of the battery cell 2 for Fig. 2
Figure.The active material 42 of negative electrode is installed on the electric conductor 32 of the film shape of negative electrode 22, wherein, the electric conductor 32 of negative electrode 22 is in side
To each band there is no the active material 42 of negative electrode.The single layer of negative electrode 22 is punched under 45° angle currently.It is punched
A corner of layer extend at this in free band of electric conductor 32 of negative electrode 22 and form negative electrode 22 there
Contact flag piece 36.Gap is provided with opposed corner portion.The layer of anode 21 is similarly punched therewith.The layer and the moon of anode 21
And then the intermediate layer of the layer of pole 22 and the layer of separator 18 is so stacked so that the contact flag piece 36 of negative electrode 22 is in anode
Above 21 gap, and the contact flag piece 35 of anode 21 is in above the gap of negative electrode 22.If it is required to contact flag piece 35,36
If can be extended by the additional block of welding.
Fig. 4 shows the schematic diagram of the local transparent of the battery cell 2 by second embodiment.The two of battery case 3
The protuberance of each protrusion is set on sidepiece opposed individual y along the longitudinal direction.Negative coupled position 71 is in the protuberance of these protrusions
One of region in, the contact flag piece 35 of anode 21 is connected at the negative coupled position with the first case member 61.Positive connection
Position 72 is in the region of the protuberance of another protrusion, the contact flag piece 36 of negative electrode 22 at the positive coupled position with it is described
Second case member 62 is connected.The protuberances of two protrusions are opposed in diagonal herein, that is, y and in transverse direction along the longitudinal direction
Z is oppositely disposed at battery case 3.
Fig. 5 is schematic diagram electrode, in a current section for negative electrode 22 of the battery cell 2 for Fig. 4.
The active material 42 of negative electrode is installed on the electric conductor 32 of the film shape of negative electrode 22, wherein, the electric conductor 32 of negative electrode 22 lateral
Each band there is no the active material 42 of negative electrode.The single layer of negative electrode 22 is so punched:So that the one of the layer being punched
Part extend into the free band of the electric conductor 32 of negative electrode 22 and formd there the contact flag piece 36 of negative electrode 22.Anode
21 layer is similarly punched therewith.The intermediate layer of the layer of the layer of anode 21 and the layer of negative electrode 22 and separator 18 and then by
So stack so that diagonally the flag of the contact with anode 21 piece 35 staggers the contact flag piece 36 of negative electrode 22.Contact flag piece 35,36
If must if can be extended by the additional part of welding.
Fig. 6 is the schematic diagram of the local transparent of the battery cell 2 by the 3rd embodiment, the embodiment and second reality
Apply example largely similar.From unlike the battery cell 2 as second embodiment, by the 3rd embodiment
In battery cell 2, y is opposed along the longitudinal direction and z flush arrangements in transverse direction for the protuberance of the protrusion at battery case 3.
Fig. 7 is the schematic diagram of the local transparent of the battery cell 2 by the 4th embodiment, the embodiment and second reality
Apply example largely similar.From unlike the battery cell 2 as second embodiment, by the 4th embodiment
In battery cell 2, y is opposed to and medially and in transverse direction z along the longitudinal direction for the protuberance of the protrusion at battery case 3
Arrange with flushing.
Fig. 8 is the schematic cross sectional view of battery cell 2, and it has the contact flag piece 35 and the first case member 61 of anode 21
Possible connection.Second case member 62 and insulator 50 have been not shown herein.The contact flag piece 35 of anode 21 is herein from electricity
Y was oriented to the basal plane of battery case 3 to pole unit 10 along stacking direction x and along the longitudinal direction before this.The contact flag piece 35 of anode 21 from
Y extends to the side of battery case 3 parallel to basal plane in a longitudinal direction there.The contact flag piece 35 of anode 21 continues on heap
Folded direction x leaves basal plane extension.
Fig. 8 a show first step for the contact flag piece 35 and the first case member 61 of anode 21 to be connected.
Protuberance provided with protrusion in described side, the contact flag piece 35 of anode 21 is led at the protuberance.Anode 21
The protuberance for contacting protrusion of the flag piece 35 with showing as negative coupled position 71 engages ground for example by ultrasonic wave in present material
Weldering, electric resistance welding or Laser Welding connection.Alternately, the contact flag piece 35 of anode 21 also can be shape-ordinatedly for example by occlusion
Or the protuberance of protrusion of the clamping with showing as negative coupled position 71 is connected.
In figure 8b in shown next step, the contact flag piece being attached thereto of negative coupled position 71 and anode 21
35 bend into battery case 3 together.
Fig. 9 shows the schematic cross sectional view of battery cell 2, its contact flag piece 35 with anode 21 and first shell portion
The alternatively possible connection of part 61.The contact flag piece 35 of anode 21 herein from electrode unit 10 before this along stacking direction x and
Y is oriented to the basal plane of battery case 3 along the longitudinal direction.The contact flag piece 35 of anode 21 is at the negative coupled position 71 being on basal plane
Directly it is connected with the first case member 61, preferred material engagement ground connection.Make what the first case member 61 and the second case member 62 insulated
Insulator 50, is partly in battery case 3 and is partly in outside battery case 3 and by shell connector 56 and shell portion herein
Part 61,62 is connected.Shell connector 56 is, for example, bonding agent.
Figure 10 shows the schematic cross sectional view of battery cell 2, and it has the contact flag piece 35 and first shell of anode 21
The alternatively possible connection of part 61.The contact flag piece 35 of anode 21 herein from electrode unit 10 before this along stacking direction x with
And y is oriented to the basal plane of battery case 3 along the longitudinal direction.The contact flag piece 35 of anode 21 therefrom in a longitudinal direction y parallel to base
Extend to face the side of battery case 3.The contact flag piece 35 of anode 21 is straight at the negative coupled position 71 being on this side
Connect and be connected with the first case member 61, preferred material engagement ground connection.Make that the first case member 61 and the second case member 62 insulate is exhausted
Edge body 50, with fig .9 it is shown similarly construct and be connected with case member 61,62.
Figure 11 is the schematic cross sectional view of battery cell 2, and it has the contact flag piece 35 and the first case member of anode 21
The possible connection of another of 61.The contact flag piece 35 of anode 21 is herein from electrode unit 10 before this along stacking direction x and edge
Longitudinal direction y and be led to the connection element 54 being connected with the first case member 61.The contact flag piece 35 of anode 21 is being in connection
Connect and be ordinatedly connected with the preferable shape of connection element 54 at the negative coupled position 71 at element 54.Therefore the contact flag of anode 21
Piece 35 is connected with the first case member 61 indirectly.The insulator 50 for making the first case member 61 and the second case member 62 insulate, and in Fig. 9
Shown in similarly construct and be connected with case member 61,62.
Figure 12 is the schematic cross sectional view of battery cell 2, and it has the contact flag piece 35 and the first case member of anode 21
The connection of 61 yet further possibility.From electrode unit 10, y was led the contact flag piece 35 of anode 21 along the longitudinal direction before this herein
It is connected to current-collector 52 and with this current-collector.Current-collector 52 is at the negative coupled position 71 being at the first case member 61
It is connected with the first case member 61.Therefore the contact flag piece 35 of anode 21 is connected with the first case member 61 indirectly.Make the first case member
61 and second case member 62 insulate insulator 50, with fig .9 it is shown similarly construct and be connected with case member 61,62.
Figure 13 shows the detailed view of the local transparent of Fig. 2 battery cell 2, and it carries attaching element 80.The dress
Connect element 80 be configured to it is prismatic and currently have triangle basal plane.Attaching element 80 is abutted to the side of battery case 3,
Positive coupled position 72 is at the side, and the side relative to longitudinal direction y and horizontal direction z current
Obliquely it is orientated in the case of 45 ° of angle.Another attaching element 80 is abutted to the side of battery pack case 3, negative coupled position
71 are at the side, and this is tilted relative to longitudinal direction y and horizontal direction z in the case of current 45 ° of angle sideways
Ground is orientated.Attaching element 80 is constructed so so that battery case 3 and attaching element 80 are complementary into cuboid.
Attaching element 80 has two along the stacking direction x cooling ducts 84 extended and a negative voltage jointer current
81 and a positive voltage jointer 82 that can not be seen in this figure.Attaching element 80 can also have other elements, example
Such as sensor.
Figure 14 shows profile of Figure 13 battery cell 2 along hatching line S, the hatching line favour longitudinal direction y and
Horizontal direction z extends.The contact flag piece 36 of negative electrode 22 was guided to the basal plane of battery case 3 from electrode unit 10 before this.Negative electrode 22
Contact flag piece 36 be directly connected at the positive coupled position 72 being on basal plane with the second case member 62.Make the first case member
61 and second case member 62 insulate insulator 50, with fig .9 it is shown similarly construct and be connected with case member 61,62.
Insulator 50 is extend at this in attaching element 80.Therefore attaching element 80 is connected with battery case 3 securely.It is preferred that
Ground, insulator 50 is also made up of the good material of heat conduction herein, therefore improves heat from the inside of battery case 3 to attaching element
The export of cooling duct 84 in 80.Insulator 50 can for example have the core of metal, and the core ribbon has the coating of electric insulation.Negative
Voltage jointer 81 is connected with forming the first case member 61 of negative terminal 11.Positive voltage jointer 82 is with forming positive terminal 12
Second case member 62 is connected.
The invention is not restricted to the aspect that embodiment as described herein and this place are emphasized.In fact, institute of the present invention is being passed through
In the range of providing, multiple flexible programs in the scope of the practice of those skilled in the art are feasible.
Claims (10)
1. a kind of battery cell(2), it includes battery case(3), electrode unit is arranged in the battery case(10), wherein,
The electrode unit(10)With with negative terminal(11)The anode of connection(21)With with positive terminal(12)The negative electrode of connection
(22),
Characterized in that,
The electrode unit(10)Electrode stack is configured to, the electrode stack has along stacking direction(x)Stackedly stack
Anode(21)Multiple layers and negative electrode(22)Multiple layers,
And the battery case(3)Be configured to it is prismatic, wherein, the battery case(3)All faces be parallel to or vertically
In the stacking direction(x), and
The battery case(3)With forming the negative terminal(11)The first case member(61)With the formation positive terminal
(12)The second case member(62).
2. according to the battery cell described in claim 1(2), it is characterised in that first case member(61)With described
Two case members(62)Be configured to metal and by circular insulator(50)It is electrically insulated from each other.
3. according to the battery cell described in claim 2(2), it is characterised in that the insulator(50)It extend into attaching member
Part(80)In, the attaching element has cooling duct(84)And/or voltage jointer(81、82)And/or sensor.
4. according to the battery cell described in any one of preceding claims(2), it is characterised in that
The anode(21)With contact flag piece(35), and the negative electrode(22)With contact flag piece(36), wherein, anode
(21)Contact flag piece(35)And negative electrode(22)Contact flag piece(36)From electrode unit at opposed sidepiece(10)It is middle to stretch out.
5. according to the battery cell described in claim 4(2), it is characterised in that the anode(21)The contact flag piece
(35)Directly with the first case member(61)Connection, and/or,
The negative electrode(22)The contact flag piece(36)Directly with the second case member(62)Connection.
6. according to the battery cell described in claim 5(2), it is characterised in that the anode(21)The contact flag piece
(35)Material engagement ground and first case member(61)Connection, and/or,
The negative electrode(22)The contact flag piece(36)Material engagement ground and second case member(62)Connection.
7. according to the battery cell described in claim 5(2), it is characterised in that the anode(21)The contact flag piece
(35)Shape-ordinatedly with first case member(61)Connection, and/or,
The negative electrode(22)The contact flag piece(36)Shape-ordinatedly with second case member(62)Connection.
8. according to the battery cell described in any one of preceding claims(2), it is characterised in that
Battery case(3)With the stacking direction(x)Basal plane at a right angle has the shape of hexagon.
9. according to the battery cell described in any one of preceding claims(2), it is characterised in that
First case member(61)Protuberance with protrusion, and/or,
Second case member(62)Protuberance with protrusion.
10. a kind of battery cell according to described in any one of preceding claims(2)In electric vehicle(EV), mixed motor-car
(HEV), plug-in mixed motor-car(PHEV), static battery pack, the battery pack in maritime applications or the battery in aerospace applications
Application in group.
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DE102016205160.1A DE102016205160A1 (en) | 2016-03-30 | 2016-03-30 | battery cell |
DE102016205160.1 | 2016-03-30 |
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Cited By (2)
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CN108232050A (en) * | 2018-03-15 | 2018-06-29 | 深圳前海优容科技有限公司 | A kind of battery, battery pack and electric vehicle |
WO2019174012A1 (en) * | 2018-03-15 | 2019-09-19 | 深圳前海优容科技有限公司 | Battery, battery pack and electric vehicle |
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DE102021210275B4 (en) | 2021-09-16 | 2024-02-29 | Volkswagen Aktiengesellschaft | Process for producing a battery |
CN113964417A (en) * | 2021-10-20 | 2022-01-21 | 东莞新能安科技有限公司 | Battery pack and electric equipment |
DE102021131936A1 (en) | 2021-12-03 | 2023-06-07 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | battery cell |
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DE102012223796A1 (en) * | 2012-12-19 | 2014-06-26 | Robert Bosch Gmbh | Arrangement for contacting electrode assembly in battery cell of battery system of vehicle, has housing portion having passage formed as nano-injected molded duct for guiding contact element which is connected to electrode assembly |
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CN101635370A (en) * | 2009-06-04 | 2010-01-27 | 周金平 | Lithium-ion power battery |
DE102009035491A1 (en) * | 2009-07-31 | 2011-02-03 | Daimler Ag | Single battery cell with a housing |
CN102630356A (en) * | 2009-11-27 | 2012-08-08 | 日立麦克赛尔能源株式会社 | Flat nonaqueous secondary battery |
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WO2019174012A1 (en) * | 2018-03-15 | 2019-09-19 | 深圳前海优容科技有限公司 | Battery, battery pack and electric vehicle |
Also Published As
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CN107275524B (en) | 2021-10-08 |
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