CN107275524A - battery cell - Google Patents

battery cell Download PDF

Info

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
Authority
CN
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
Application number
CN201710197391.4A
Other languages
Chinese (zh)
Other versions
CN107275524B (en
Inventor
D.绍尔泰格
H.赖因斯哈根
S.波勒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN107275524A publication Critical patent/CN107275524A/en
Application granted granted Critical
Publication of CN107275524B publication Critical patent/CN107275524B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/103—Primary casings, jackets or wrappings of a single cell or a single battery 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 of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/107—Primary casings, jackets or wrappings of a single cell or a single battery 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

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

Battery cell
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.
CN201710197391.4A 2016-03-30 2017-03-29 Battery cell Active CN107275524B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016205160.1A DE102016205160A1 (en) 2016-03-30 2016-03-30 battery cell
DE102016205160.1 2016-03-30

Publications (2)

Publication Number Publication Date
CN107275524A true CN107275524A (en) 2017-10-20
CN107275524B CN107275524B (en) 2021-10-08

Family

ID=59885769

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710197391.4A Active CN107275524B (en) 2016-03-30 2017-03-29 Battery cell

Country Status (2)

Country Link
CN (1) CN107275524B (en)
DE (1) DE102016205160A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2011154784A (en) * 2010-01-26 2011-08-11 Hitachi Maxell Energy Ltd Flat nonaqueous secondary battery
CN102630356A (en) * 2009-11-27 2012-08-08 日立麦克赛尔能源株式会社 Flat nonaqueous secondary battery
DE102012018041A1 (en) * 2012-09-13 2014-03-13 Daimler Ag Isolation of electrochemical energy storage
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2011154784A (en) * 2010-01-26 2011-08-11 Hitachi Maxell Energy Ltd Flat nonaqueous secondary battery
DE102012018041A1 (en) * 2012-09-13 2014-03-13 Daimler Ag Isolation of electrochemical energy storage
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
DE102016205160A1 (en) 2017-10-05
CN107275524B (en) 2021-10-08

Similar Documents

Publication Publication Date Title
KR100878700B1 (en) Electrode Plate for Battery Cell and Process of Preparing the Same
KR100637443B1 (en) Secondary battery and terminal assembly using the same
CN107275524A (en) battery cell
CN103098285A (en) Lithium secondary battery having multi-directional lead-tab structure
US20200028200A1 (en) Method for producing an electrode unit for a battery cell and electrode unit
US20150072205A1 (en) Battery assembly having single electrode terminal connection part
US10312547B2 (en) Cross-woven electrode assembly
CN104813530B (en) The battery cell of electrode assembly with staggered structure
KR20080005623A (en) Safety kit for secondary battery
US20110177383A1 (en) Battery cell module for modular battery with interleaving separator
US9825301B2 (en) Electrode with improvement of biased movement and secondary battery comprising the same
US20110200867A1 (en) Modular battery with battery cell having bimetallic end plates
JP2012523094A (en) Galvanicel electrode geometry
US9570729B2 (en) Electrical energy storage module and method for producing an electrical energy storage module
JP2016541103A (en) Electrode assembly, manufacturing method thereof, and electrochemical cell
KR20190058574A (en) METHOD FOR MANUFACTURING ELECTRODE STACK FOR BATTERY CELL,
KR20200024249A (en) Battery cell
KR101653320B1 (en) Jelly-Roll Type Electrode Assembly of Low Resistance And Secondary Battery Comprising the Same
US9401526B2 (en) Power storage device
CN104508867B (en) Electrical storage device
CN107644957A (en) Battery cell and the method for manufacturing battery cell
CN106537650B (en) Method for manufacturing prismatic battery unit
CN107251263A (en) Battery list pond and battery system
WO2022163616A1 (en) Electricity storage element and electricity storage device
CN107210390B (en) Battery cell and battery system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant