EP4327396A1 - Batterieaufnahmesystem - Google Patents

Batterieaufnahmesystem

Info

Publication number
EP4327396A1
EP4327396A1 EP22722741.0A EP22722741A EP4327396A1 EP 4327396 A1 EP4327396 A1 EP 4327396A1 EP 22722741 A EP22722741 A EP 22722741A EP 4327396 A1 EP4327396 A1 EP 4327396A1
Authority
EP
European Patent Office
Prior art keywords
battery
battery cell
battery cells
heat protection
longitudinal direction
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.)
Pending
Application number
EP22722741.0A
Other languages
German (de)
English (en)
French (fr)
Inventor
Andreas Linner
Peter Wagner
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.)
Lisa Draexlmaier GmbH
Original Assignee
Lisa Draexlmaier 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 Lisa Draexlmaier GmbH filed Critical Lisa Draexlmaier GmbH
Publication of EP4327396A1 publication Critical patent/EP4327396A1/de
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/383—Flame arresting or ignition-preventing means
    • 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
    • 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
    • B60L50/66—Arrangements of 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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

Definitions

  • the invention relates to a battery accommodation system for accommodating a plurality of battery cells in an electrically drivable vehicle.
  • a battery receiving system is used in a conventional electrified vehicle to house a plurality of battery cells that provide the electrical energy needed to propel the electrified vehicle.
  • Battery cells based on lithium-ion technology are usually used, but these can be converted into a thermally unstable state by certain external influences, such as overheating, overcharging and/or mechanical damage.
  • a battery cell of the plurality of battery cells is transferred to a thermally unstable state, a large amount of hot gases under high pressure is released to the surroundings of the battery cell within a short time through a pressure relief valve of the battery cell. Due to the usually dense packing of the battery cells within the battery receiving system, the hot gases emitted by the thermally unstable battery cell can also convert neighboring battery cells into a thermally unstable state. Under certain circumstances, this can result in a chain reaction that can severely damage or even destroy a large part of the battery cells.
  • the present invention is based on the finding that a heat protection barrier of the battery receiving system ensures that the hot gases emitted by a thermally unstable battery cell cannot thermally excite neighboring battery cells.
  • the battery cells accommodated in the battery receiving system are arranged in a plurality of battery cell rows positioned parallel to one another, the battery cells of the respective battery cell rows being electrically connected in series by a plurality of electrical connecting elements.
  • the heat protection barrier is provided by at least one heat protection element, which is arranged between two adjacent battery cells of the respective row of battery cells and provides a thermal barrier between the two adjacent battery cells.
  • a battery accommodation system for accommodating a plurality of battery cells in an electrically drivable vehicle, with a accommodating housing for accommodating the plurality of battery cells, the plurality of battery cells which are accommodated in the accommodating housing, the battery cells are arranged in a plurality of battery cell rows positioned parallel to one another, with the battery cells of the battery cell rows extending in a longitudinal direction, a plurality of electrical connecting elements which electrically conductively connect two battery cells of the respective battery cell row that are adjacent along the longitudinal direction to form an electrical series connection of the respective To provide battery cell rows, and at least one heat protection element, which arrange between two battery cells adjacent along the longitudinal direction of the respective battery cell row t and is designed to provide a heat protection barrier between the two adjacent battery cells of the respective battery cell row.
  • the at least one heat protection element provides an effective heat protection barrier between the two adjacent battery cells of the respective row of battery cells, so that if one of the two adjacent battery cells should be transferred to a thermally unstable state, it is prevented that the other of the two adjacent battery cells is also transferred to a thermally unstable state.
  • the heat protection member is formed of a material having high thermal resistance and high pressure resistance.
  • the material of the heat protection element comprises at least one metal, in particular steel, iron and/or aluminum.
  • the heat protection element is designed as a heat protection plate.
  • the heat protection plate has at least one elevation and/or at least one depression.
  • the at least one heat protection element can comprise a plurality of heat protection elements, one heat protection element of the plurality of heat protection elements being arranged between two battery cells of the respective battery cell rows that are adjacent in the longitudinal direction and designed to provide a heat protection barrier between the two adjacent battery cells of the respective battery cell rows.
  • the plurality of heat protection elements can ensure a plurality of effective heat protection barriers between a plurality of longitudinally adjacent battery cells in a battery cell row, or in a plurality of battery cell rows positioned parallel to one another.
  • the at least one heat protection element can extend beyond the respective battery cell row and is arranged between battery cells that are adjacent to one another along a longitudinal direction in a plurality of battery cell rows that are positioned parallel to one another.
  • the at least one heat protection element can extend at least in sections, in particular completely, along a transverse direction running transverse to the longitudinal direction in the receiving housing and/or the at least one heat protection element can extend at least in sections, in particular completely along a vertical direction running transverse to the longitudinal direction and transverse to a transverse direction extend in the receiving housing.
  • the at least one heat protection element thus provides, in particular, an effective heat protection barrier that extends flatly inside the receiving housing.
  • the at least one heat protection element arranged between the two battery cells that are adjacent along the longitudinal direction of the respective battery cell row has at least one opening in order to enable an electrical connection between the two battery cells that are adjacent along the longitudinal direction of the respective battery cell row by means of the respective electrical connection element.
  • battery cells that are “adjacent” to one another along a longitudinal direction refer to adjacent battery cells of a single row of battery cells.
  • the battery cells according to the present disclosure each include opposite poles, in particular positive pole and negative pole.
  • one pole, in particular positive pole or negative pole, of one of the two longitudinally adjacent battery cells of the respective battery cell row is connected by the respective electrical connecting element to an opposite pole, in particular negative pole or positive pole, of the other of the two in Longitudinally adjacent battery cells electrically connected.
  • An effective electrical series connection of the respective battery cell row can be achieved by the plurality of electrical connection elements, which in the respective battery cell row electrically connect battery cells that are adjacent to one another in the longitudinal direction.
  • the plurality of battery cell rows, each electrically connected in series and positioned parallel to one another in the receiving housing, enables an effective energy density of the entire battery receiving system.
  • side-by-side battery cells refer to battery cells from different battery cell rows positioned parallel to one another.
  • the battery cell rows positioned parallel to one another in the receiving housing are spaced apart from one another or the battery cell rows positioned parallel to one another in the receiving housing rest against one another.
  • battery cells arranged next to one another from different battery cell rows positioned parallel to one another are positioned without an offset along the longitudinal direction.
  • battery cells arranged next to one another from different battery cell rows positioned parallel to one another are positioned with an offset along the longitudinal direction.
  • the battery cells according to the present disclosure include, in particular, round cells.
  • the at least one heat protection element according to the present disclosure effectively prevents a spread of thermally unstable states of a plurality of battery cells within the battery receiving system, so that battery cells based on lithium ion technology can continue to be used, which have a particularly high energy density.
  • the at least one heat protection element according to the present disclosure can continue to ensure particularly dense packing of the battery cells in the battery receiving system due to the plurality of battery cell rows positioned parallel to one another, without the risk of thermally unstable states spreading to adjacent battery cells.
  • a space-optimized battery receiving system can thus be provided.
  • the at least one heat protection element is arranged between the respective electrical connection element of the plurality of electrical connection elements and one of the two adjacent battery cells of the respective battery cell row.
  • the respective electrical connection element is materially connected to one of the two adjacent battery cells in the respective battery cell row and the respective electrical connection element is connected to the other of the two adjacent battery cells in the respective battery cell row in a non-positive and/or positive manner, with the at least one heat protection element in particular between the respective electrical connection element and the cohesively connected battery cell of the respective battery cell row is arranged.
  • the heat protection element arranged between two battery cells of the respective battery cell row that are adjacent along the longitudinal direction extends along a transverse direction that runs transversely to the longitudinal direction.
  • the heat protection element has at least one opening, with a battery cell, in particular a pole of the battery cell, of the two battery cells arranged adjacent to one another of the respective battery cell row being accommodated at least in sections in the opening, or with one electrical connecting element of the plurality being accommodated in the opening at least in sections is arranged by electrical connection elements in order to provide an electrically conductive connection between the two adjacent battery cells of the respective battery cell row.
  • Either a battery cell, in particular a pole of the battery cell, of the two battery cells arranged adjacent to one another can be arranged in the opening or the electrical connection element can be arranged in the opening.
  • an opening edge delimiting the opening can bear against the battery cell accommodated at least in sections in the opening in order to ensure that there is no gap between the heat protection element and the battery cell through which hot gas can penetrate.
  • an opening edge delimiting the opening can bear against the electrical connection element arranged at least in sections in the opening in order to ensure that there is no gap between the heat protection element and the electrical connection element through which hot gas can penetrate.
  • the at least one heat protection element comprises a heat protection plate.
  • the heat protection plate has at least one elevation and/or at least one depression.
  • the at least one heat protection element is arranged between two battery cells that are adjacent along the longitudinal direction of a plurality of battery cell rows positioned parallel to one another, with the at least one heat protection element being arranged in particular between two battery cell rows that are adjacent along the longitudinal direction of all battery cell rows that are positioned parallel to one another.
  • the at least one heat protection element extends beyond a single battery cell row, and the at least one heat protection element extends into the corresponding battery cell row(s) arranged next to the battery cell row.
  • the at least one heat protection element extends along a transverse direction extending transversely to the longitudinal direction and/or along a vertical direction extending transversely to the longitudinal direction and transversely to the transverse direction.
  • the at least one heat protection element can be arranged adjacently between a plurality of each in the corresponding rows of battery cells along the longitudinal direction Battery cells are arranged so that an effective heat protection barrier for a plurality of battery cell rows can be made possible by a single heat protection element.
  • battery cell rows positioned parallel to one another have the same polarity and/or two battery cell rows arranged next to one another of the battery cell rows positioned parallel to one another have different polarity.
  • the poles of the battery cells arranged next to one another in different battery cell rows are the same, i.e. the arrangement of plus and minus poles in the corresponding battery cell rows with the same polarity is symmetrical.
  • poles of the battery cells arranged next to one another in different battery cell rows are different, i.e. in the corresponding battery cell rows with different polarity, in addition to a positive pole of a battery cell in the battery cell arranged next to it in a different battery cell row, there is a negative Pole present and vice versa.
  • all battery cell rows positioned parallel to one another have the same polarity.
  • the battery cell rows positioned parallel to one another have the same polarity and each two battery cell rows arranged next to one another have different polarity in at least some of the battery cell rows positioned parallel to one another.
  • two battery cells arranged next to one another in different battery cell rows are arranged without an offset from one another, and/or two battery cells arranged next to one another in different battery cell rows are arranged with an offset from one another, with the offset extending in particular along a longitudinal direction of the battery cell rows.
  • two battery cells arranged side by side in different rows of battery cells are offset from one another, with the battery receiving system having at least one first heat protection element and at least one second heat protection element, which are offset from one another, in particular offset by the offset, between two battery cells that are adjacent in the longitudinal direction respective battery cell rows are arranged.
  • the first and second heat protection element each have at least one first opening, in which at least a section of a pole, in particular a positive pole, of one of the two battery cells that are adjacent along the longitudinal direction of the respective battery cell row is accommodated, and/or wherein the first and second Each heat protection element has at least one second opening, in which one of the two adjacent battery cells along the longitudinal direction of the respective row of battery cells is accommodated at least in sections.
  • the first opening is designed to accommodate, at least in sections, an electrical connection element connected to the pole, in particular the positive pole.
  • the first opening for accommodating the pole, in particular the positive pole, or the electrical connection element has a smaller diameter than the second opening for accommodating the battery cell.
  • an electrical connection element of the plurality of electrical connection elements has a contact area which is electrically conductively connected to one pole, in particular positive pole, of one battery cell of the two battery cells that are adjacent along the longitudinal direction, and which is electrically conductively connected to another pole, in particular Negative pole is connected from the other battery cell of the two battery cells adjacent along the longitudinal direction.
  • the contact area enables an effective electrically conductive connection between different poles of the two battery cells that are adjacent in the longitudinal direction.
  • the contact area is materially connected to at least one pole, in particular positive pole, in particular welded, soldered and/or glued, with the at least one heat protection element being arranged between the respective electrical connection element of the plurality of electrical connection elements and the pole.
  • the Contact area with only a single pole, in particular the positive pole, of a single one of the two battery cells that are adjacent along the longitudinal direction.
  • the contact area is materially bonded to one pole each, in particular positive pole and negative pole, of both battery cells that are adjacent along the longitudinal direction.
  • a plurality of receiving elements are arranged on the contact area, which receive a cell end of at least one of the two battery cells that are adjacent in the longitudinal direction.
  • the receiving elements enable effective, in particular non-positive, receiving of the respective end of the cell, so that the corresponding battery cell simply has to be inserted between the receiving elements in order to ensure effective attachment.
  • the battery receiving system has a plurality of heat protection elements arranged at a distance from one another, in particular spaced apart from one another along a longitudinal direction of the battery cell rows, in the receiving housing, with each heat protection element of the plurality of heat protection elements being arranged between two different battery cells of the respective battery cell rows that are adjacent along the longitudinal direction. to ensure a heat protection barrier between a plurality of battery cells adjacent along the longitudinal direction of the respective battery cell rows.
  • the plurality of heat protection elements ensures that an effective heat protection barrier is provided for different battery cells of the respective battery cell rows that are adjacent along the longitudinal direction.
  • the distance between the heat protection elements, which are arranged correspondingly spaced apart from one another, corresponds in particular to the length of a battery cell.
  • the at least one heat protection element is connected to at least one of the two battery cells that are adjacent along the longitudinal direction of the respective row of battery cells in a materially, non-positively and/or positively connected manner.
  • the at least one heat protection element is connected to at least one electrical connection element of the plurality of electrical connection elements in a materially, non-positively and/or form-fitting manner.
  • the battery cells each have at least one degassing valve, which is designed to discharge gas from the battery cell in the event of overpressure within the respective battery cell, with the at least one degassing valve in particular being spatially close to a pole, in particular positive pole or negative pole, of the respective battery cell is arranged.
  • the degassing valve is arranged in close proximity to a pole, in particular positive pole or negative pole, of the respective battery cell, so that the degassing valve is arranged in close proximity to the at least one heat protection element, which is located between two battery cells that are adjacent in the longitudinal direction, or between the corresponding ones Poles of the adjacent battery cells, is arranged so that discharged gas through the degassing valve can be effectively derived through the at least one heat protection element.
  • FIG. 1 shows a schematic representation of a battery receiving system according to a comparative example
  • FIG. 2 shows a schematic representation of a battery receiving system according to an embodiment in a horizontal sectional view
  • FIG. 3 shows a schematic representation of a battery receiving system according to the exemplary embodiment in a vertical sectional view
  • FIG. 4 shows a schematic representation of a connection area between two battery cells of a battery receiving system according to the exemplary embodiment
  • FIG. 5 shows a schematic representation of a battery receiving system according to the exemplary embodiment in a perspective view
  • FIG. 6 shows a schematic representation of a battery receiving system according to the exemplary embodiment in a further perspective view.
  • FIG. 1 shows a schematic representation of a battery receiving system according to a comparative example.
  • the battery accommodation system 100 shown only schematically in FIG. 1 enables a plurality of battery cells 101 to be accommodated in an electrically drivable vehicle.
  • the battery receiving system 100 has a receiving housing 103 , only indicated in FIG. 1 , for receiving the plurality of battery cells 101 .
  • Battery cells 101 In a conventional electrically drivable vehicle, a large number of battery cells 101 are required in order to provide sufficient electrical energy for driving the vehicle. Battery cells 101 based on lithium-ion technology are usually used here, which, however, can be converted into a thermally unstable state under certain operating conditions.
  • a battery cell 101 is overcharged, if a battery cell 101 overheats and/or if the battery cell 101 is mechanically damaged, a battery cell-internal short circuit can occur, as a result of which a large amount of thermal energy can be released inside the battery cell 101, as a result of which turn the pressure inside the battery cell 101 increases sharply.
  • an overpressure valve that may be arranged in the battery cell 101 can open and release a significant amount of hot gas to the immediate vicinity of the battery cell 101, as is shown schematically by arrow markings in FIG. 1 . Due to the often very dense packing of battery cells 101 in a conventionally used housing 103, the correspondingly released hot gas can thermally excite other neighboring battery cells 101, so that the other neighboring battery cells 101 can also be brought into a thermally unstable state.
  • FIG. 2 shows a schematic representation of a battery receiving system according to an exemplary embodiment in a horizontal sectional view.
  • the battery receiving system 100 has a receiving housing 103 , shown only schematically in FIG. 2 , for receiving a plurality of battery cells 101 .
  • the battery cells 101 are arranged within the receiving housing 103 in a plurality of battery cell rows 105 positioned parallel to one another. 2 shows only a section of the receiving housing 103 with a first battery cell row 105-1, a second battery cell row 105-2 positioned parallel thereto and a third battery cell row 105-3 positioned parallel thereto.
  • the receiving housing 103 comprises in particular a plurality of horizontal battery cell levels 107-1 arranged one above the other, with each horizontal battery cell level 107-1 of the plurality of horizontal Battery cell planes 107-1 each have a plurality of battery cell rows 105 positioned parallel to one another according to FIG. 2.
  • FIG. 3 for a vertical sectional view of the corresponding three-dimensional battery receiving system 100 .
  • the battery cells 101 of the respective battery cell row 105, 105-1, 105-2, 105-3 are arranged in an electrical series connection. This means that in each case two battery cells 101 that are adjacent along the longitudinal direction 121 of the respective battery cell row 105, 105-1, 105-2, 105-3 are electrically conductively connected to one another. 2 shows a first battery cell 101-1 and a second battery cell 101-2 adjacent to the first battery cell 101-1 in the respective battery cell row 105-1 along the longitudinal direction 121 by way of example.
  • an electrical pole 109, in particular negative pole 109-1, of the first battery cell 101-1 is electrically conductively connected to an opposite electrical pole 109, in particular positive pole 109-2, of the second battery cell 101-2.
  • an electrical pole 109, in particular positive pole 109-2, of the first battery cell 101-1 can alternatively be connected to an opposite electrical pole 109, in particular negative pole 109-1, of the second battery cell 101-2 be electrically connected.
  • the battery receiving system 100 has a plurality of electrical connection elements 111.
  • one electrical connection element 111 of the plurality of electrical connection elements 111 electrically conductively connects two battery cells 101, 101-1, 101-2 of the respective battery cell row 105, 105-1, 105-2, 105-3 that are adjacent along the longitudinal direction 121.
  • a first electrical connection element 111 is emphasized in FIG. 2 , which electrically conductively connects the first battery cell 101 - 1 to the second battery cell 101 - 2 arranged adjacent in the first battery cell row 105 - 1 along the longitudinal direction 121 .
  • the electrical connection elements 111 each have a contact area 113 which is electrically conductive with a pole 109, in particular positive pole 109-2, of a battery cell 101, 101-1, 101-2 of the two adjacent battery cells 101, 101-1, 101-2, and which is electrically connected to an opposite pole 109, in particular negative pole 109-1, from the other battery cell 101, 101-1, 101-2 of the two adjacent battery cells 101, 101-1, 101-2 is connected.
  • the contact region 113 of the first electrical connection element 111 which is electrically conductively connected to the negative pole 109-1 of the first battery cell 101-1 and to the positive pole 109-2 of the second battery cell 101-2, is only shown schematically.
  • FIG. 2 shows receiving elements 115 arranged on the contact area 113, in particular receiving teeth, which enclose a cell end 117 of at least one of the two battery cells 101, 101-1, 101-2 in order to hold the at least one battery cell 101, 101-1 , 101-2.
  • the receiving elements 115 enclose a cell end 117 of the first battery cell 101-1 in order to ensure that the first battery cell 101-1 is effectively received. Even if this is not shown in FIG. 2, the contact area 113 of the electrical connection element 111 is materially connected to a pole 109, in particular positive pole 109-2, of the second battery cell 101-2, in particular welded.
  • the electrical connecting elements 111, 111-1 arranged between two adjacent battery cells 101, 101-1, 101-2 of the respective battery cell rows 105, 105-1, 105-2, 105-3 along the longitudinal direction 121 provide an effective electrically conductive connection between all adjacent battery cells 101, 101-1, 101-2 in the respective battery cell row 105, 105-1, 105-2, 105-3.
  • the battery cell rows 105, 105-1, 105-2, 105-3 positioned parallel to one another have the same polarity, in particular all battery cell rows 105, 105-1, 105-2, 105-3 positioned parallel to one another , so that the poles 109, 109-1, 109-2, 105-3 are arranged in the same direction in the battery cell rows 105 positioned parallel to one another.
  • two battery cells 101 arranged next to one another in different battery cell rows 105 are not offset from one another along the longitudinal direction 121 .
  • the battery holder system 100 has at least one heat protection element 119, in particular a heat protection plate, which is located between two along the longitudinal direction 121 adjacent battery cells 101, 101-1, 101-2 of the respective battery cell rows 105, 105-1, 105-2 is arranged and formed, a heat protection barrier between the two adjacent battery cells 101, 101-1, 101-2 of the respective To provide battery cell rows 105, 105-1, 105-2, 105-3.
  • a heat protection plate which is located between two along the longitudinal direction 121 adjacent battery cells 101, 101-1, 101-2 of the respective battery cell rows 105, 105-1, 105-2 is arranged and formed, a heat protection barrier between the two adjacent battery cells 101, 101-1, 101-2 of the respective To provide battery cell rows 105, 105-1, 105-2, 105-3.
  • the heat protection element 119 provides a physical separation between the two battery cells 101, 101-1, 101-2 of the respective battery cell rows 105, 105-1, 105-2, 105, which are adjacent along the longitudinal direction 121 -3 safe, so that in the event of a thermal overload from a battery cell 101, 101-1, 101-2 escaping hot gas can be retained by the heat protection element 119 from the other battery cells 101, 101-1, 101-2. This can effectively prevent neighboring battery cells 101, 101-1, 101-2 from also being converted into a thermally unstable state.
  • the heat protection element 119 consists in particular of a material with high temperature and pressure resistance in order to be able to withstand the escaping hot gas and comprises in particular steel, iron and/or aluminum.
  • the battery cells 101, 101-1, 101-2 of the respective battery cell row 105, 105-1, 105-2, 105-3 extend along a longitudinal direction 121 and the heat protection element 119 extends along a Transverse direction 123 running transversely to the longitudinal direction 121.
  • the heat protection element 119 is not only arranged between two adjacent battery cells 101, 101-1, 101-2 along the longitudinal direction 121 of a single battery cell row 105, 105-1, 105-2, 105-3, but the heat protection element 119 is in particular between two adjacent battery cells 101, 101-1, 101-2 along the longitudinal direction 121 of a plurality of battery cell rows 105, 105-1, 105-2, 105-3 positioned parallel to one another.
  • the heat protection element 119 extends in particular at least in sections, in particular completely, along the transverse direction 123 running transversely to the longitudinal direction 121 in the receiving housing 103 and/or the heat protection element extends 119 in particular at least in sections, in particular completely, along a vertical direction in the receiving housing 103 running transversely to the longitudinal direction 121 and transversely to a transverse direction 123, the vertical direction not being illustrated in FIG. 2 .
  • the heat protection element 119 can be arranged between two adjacent battery cells 101, 101-1, 101-2 along the longitudinal direction 121 of all battery cell rows 105, 105-1, 105-2, 105-3 positioned parallel to one another.
  • the heat protection element 119 shown in FIG. 2 can provide a heat protection barrier between two battery cells 101, 101-1, 101-2 of the respective battery cell rows 105, 105-1, 105-2, 105-3 that are adjacent along the longitudinal direction 121.
  • the battery cell rows 105, 105-1, 105-2, 105-3 have a plurality of battery cells 101, 101-1, 101-2 arranged along the longitudinal direction 121, so that the battery receiving system 100 can in particular have a plurality of further heat protection elements 119, which are not shown in FIG.
  • Each of the additional heat protection elements 119 is arranged between two different battery cells 101, 101-1, 101-2 of the respective battery cell rows 105, 105-1, 105-2, 105-3 that are adjacent along the longitudinal direction 121, so that in particular a plurality, in particular all of the battery cells 101, 101-1, 101-2 that are adjacent along the longitudinal direction 121 can be effectively thermally decoupled from one another by a heat protection barrier.
  • the at least one heat protection element 119 is arranged between two battery cells 101, 101-1, 101-2 of the respective battery cell rows 105, 105-1, 105-2, 105-3 that are adjacent along the longitudinal direction 121, the at least one heat protection element 119 has at least an opening 125, in particular a plurality of openings 125, which is not shown in FIG.
  • a battery cell 101, 101-1, 101-2 of the two can be pushed through the opening 125 of the respective heat protection element 119 at least in sections along the longitudinal direction 121 adjacent battery cells 101, 101-1, 101-2 of the respective battery cell rows 105, 105-1, 105-2, 105-3 to an electrically conductive connection between the two adjacent battery cells 101, 101-1 , 101-2 to allow through the heat protection element 119 therethrough.
  • One electrical connection element 111 of the plurality of electrical connection elements 111 can be arranged at least in sections in the opening 125 of the respective heat protection element 119 in order to establish an electrically conductive connection between the two battery cells 101, 101-1, 101-2 arranged adjacent to one another along the longitudinal direction 121 to allow the heat protection element 119 to pass through.
  • the at least one heat protection element 119 can thus ensure an effective heat protection barrier between adjacent battery cells 101 of the respective battery cell rows 105 .
  • FIG. 3 shows a schematic representation of a battery receiving system according to the exemplary embodiment in a vertical sectional view.
  • the battery receiving system 100 shown in FIG. 3 corresponds to the battery receiving system 100 shown in FIG. 2, with FIG. 3 showing a vertical sectional view.
  • the drawing plane shown in FIG. 3 corresponds to a vertical battery cell plane 107-2 which intersects a multiplicity of horizontal battery cell planes 107-1 shown only schematically in FIG.
  • two battery cell rows 105, 105-1, 105-2, 105-3 arranged next to one another in each case of the battery cell rows 105, 105-1, 105-2, 105-3 positioned parallel to one another have a different polarity
  • two battery cells 101, 101-1, 101-2 arranged side by side in different battery cell rows 105, 105-1, 105-2, in particular with an offset 127 are arranged to each other.
  • the offset 127 extends in this case along the longitudinal direction 121 of the battery cell rows 105, 105-1, 105-2, 105-3.
  • the first battery cell row 105, 105-1 and the third battery cell row 105, 105-3 have the same polarity and are arranged without offset 127 to one another, and that the second battery cell row 105, 105-2 has different polarity to the first battery cell row 105, 105-1 arranged next to it and to the third battery cell row 105, 105-3 arranged next to it.
  • the second battery cell row 105, 105-2 is arranged with an offset 127 along the longitudinal direction 121 of the battery cell rows 105, 105-1, 105-2 relative to the first and third battery cell rows 105, 105-1, 105-3.
  • a first heat protection element 119-1 and a second heat protection element 119-2 are necessary, which are offset from one another, in particular offset by the offset 127 from one another, between two along each other the longitudinal direction 121 adjacent battery cells 101 of the respective battery cell rows 105 are arranged.
  • the cell ends 117 of the battery cells 101 which include the positive pole 109-2, are accommodated in first openings 125-1 in the first or second heat protection element 119-1, 119-2.
  • the battery cells 101 themselves are accommodated in second openings 125-2 of the first or second heat protection element 119-1, 119-2, the second openings 125-2 in particular having a larger diameter than the first openings 125-1.
  • FIG. 4 shows a schematic representation of a connection area between two battery cells of a battery receiving system according to the exemplary embodiment.
  • the electrical connection area between two battery cells 101 that are adjacent along the longitudinal direction 121 in a single battery cell row 105 is shown during a thermally unstable state of one of the two battery cells 101 .
  • the first battery cell 101 - 1 is electrically conductively connected to the second battery cell 101 - 2 by an electrical connection element 111 .
  • a contact area 113 of the electrical connection element 111 establishes contact between a pole 109, in particular negative pole 109-1, of the first battery cell 101-1 and a pole 109, in particular positive pole 109-2, of the second battery cell 101-2.
  • FIG. 4 also shows the heat protection element 119, which is arranged between the first and second battery cell 101-1, 101-2, with a pole 109, in particular the positive pole 109-2, or the electrical connecting element 111, is accommodated at least in sections in an opening 125, in particular a first opening 125-1, of the heat protection element 119.
  • a degassing valve 129 of the second battery cell 101-2 shown only schematically in Fig. 4, opens due to a thermally unstable state of the second battery cell 101-2, so that hot gas can escape from the interior of the second battery cell 101-2, and effectively through the Heat protection element 119 can be derived, so that an impairment of the thermal stability of the first battery cell 101-1 can be prevented.
  • FIG. 5 shows a schematic representation of a battery receiving system according to the exemplary embodiment in a perspective view.
  • FIG. 5 shows a perspective view of a battery receiving system 100, wherein in particular a height and width extension of a heat protection element 119 is shown.
  • the horizontal battery cell plane 107-1 shown in FIG. 2 and the vertical battery cell plane 107-2 shown in FIG. 3 are shown schematically in FIG.
  • FIG. 5 shows the first heat protection element 119-1 shown in FIG.
  • the heat protection element 119, 119-1 is arranged between two battery cells 101 of the respective battery cell rows 105 that are adjacent along the longitudinal direction 121, and has openings 125 through which the adjacent battery cells 101 are electrically connected.
  • the first heat protection element 119-1 shown in Fig. 5 has first openings 125-1 with a smaller diameter, into which a pole 109, in particular a positive pole 109-2, or An electrical connecting element 111 connected to the pole 109, in particular the positive pole 109-2, is accommodated.
  • the electrical connection element 111 has a contact area 113 and receiving elements 115 which are arranged on the contact area 113 and receive a cell end 117 of the second battery cell 101-2.
  • the first heat protection element 119-1 shown in Fig. 5 has second openings 125-2 with a larger diameter, into which, at least in sections, one of the two adjacent battery cells 101 along the longitudinal direction 121 of the respective Battery cell rows 105 is added.
  • FIG. 5 only shows the arrangement of the first heat protection element 119-1 between a first battery cell 101-1 and a second battery cell 101-2, the other second battery cells 101-2 not being shown in the illustration chosen in FIG .
  • the heat protection element 119 is connected to the battery cells 101 arranged adjacent to one another in the respective battery cell rows 105 in a non-positive, positive and/or material connection, in particular by laser welding.
  • FIG. 6 shows a schematic representation of a battery receiving system according to the exemplary embodiment in a further perspective view.
  • FIG. 6 A perspective view of a battery receiving system 100 is shown in FIG. 6 , a height and width extension of a heat protection element 119 being shown in particular.
  • the horizontal battery cell plane 107-1 shown in FIG. 2 and the vertical battery cell plane 107-2 shown in FIG. 3 are shown schematically in FIG.
  • FIG. 6 shows the second heat protection element 119-2 shown in FIG.
  • the heat protection element 119, 119-2 is arranged between two battery cells 101 of the respective battery cell rows 105 that are adjacent along the longitudinal direction 121 and has openings 125, not shown in FIG. 6, through which the adjacent battery cells 101 are electrically connected.
  • the second heat protection element 119-2 illustrated in FIG. 6 is arranged between two battery cells 101 spaced apart along the longitudinal direction 121 of a plurality of battery cell rows 105 positioned parallel to one another.
  • the heat protection element 119 shown in the exemplary embodiment, in particular the first and/or second heat protection element 119-1, 119-2, can thus ensure an effective thermal delimitation between battery cells 101 that are adjacent along the longitudinal direction 121.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)
EP22722741.0A 2021-04-23 2022-04-13 Batterieaufnahmesystem Pending EP4327396A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021110418.1A DE102021110418A1 (de) 2021-04-23 2021-04-23 Batterieaufnahmesystem
PCT/EP2022/059877 WO2022223396A1 (de) 2021-04-23 2022-04-13 Batterieaufnahmesystem

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EP4327396A1 true EP4327396A1 (de) 2024-02-28

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Application Number Title Priority Date Filing Date
EP22722741.0A Pending EP4327396A1 (de) 2021-04-23 2022-04-13 Batterieaufnahmesystem

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US (1) US20240195009A1 (ko)
EP (1) EP4327396A1 (ko)
JP (1) JP2024514944A (ko)
KR (1) KR20230163449A (ko)
CN (1) CN117203834A (ko)
DE (1) DE102021110418A1 (ko)
WO (1) WO2022223396A1 (ko)

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DE102022112233A1 (de) 2022-05-16 2023-11-16 Lisa Dräxlmaier GmbH Batteriezellenanordnung für eine batterie eines kraftfahrzeugs mit einer thermischen isolation zur hemmung von wärmeübertragung durch wärmestrahlung

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Publication number Priority date Publication date Assignee Title
DE10011233B4 (de) 1999-03-12 2007-07-12 Sanyo Electric Co., Ltd., Moriguchi Batterieeinheit
WO2008152803A1 (ja) * 2007-06-11 2008-12-18 Panasonic Corporation 電池パックおよび電池搭載機器
DE102014012568B4 (de) * 2014-08-29 2023-03-02 Stöbich Technology Gmbh Akkumulatorvorrichtung
CN107230752A (zh) * 2017-06-30 2017-10-03 苏州安靠电源有限公司 用于电池模组的电池夹具
KR20210044534A (ko) * 2019-10-15 2021-04-23 주식회사 엘지화학 배터리 팩
AT522585B1 (de) 2019-12-13 2020-12-15 Kreisel Electric Gmbh & Co Kg Vorrichtung zum Trennen der elektrischen Verbindung zu einer Batteriezelle im Ausgasungsfall

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KR20230163449A (ko) 2023-11-30
WO2022223396A1 (de) 2022-10-27
US20240195009A1 (en) 2024-06-13
JP2024514944A (ja) 2024-04-03
CN117203834A (zh) 2023-12-08

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