WO2024023722A1 - Ensemble batterie et procédé de fabrication d'un ensemble batterie - Google Patents

Ensemble batterie et procédé de fabrication d'un ensemble batterie Download PDF

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Publication number
WO2024023722A1
WO2024023722A1 PCT/IB2023/057566 IB2023057566W WO2024023722A1 WO 2024023722 A1 WO2024023722 A1 WO 2024023722A1 IB 2023057566 W IB2023057566 W IB 2023057566W WO 2024023722 A1 WO2024023722 A1 WO 2024023722A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
casing
electronic board
battery cell
volume
Prior art date
Application number
PCT/IB2023/057566
Other languages
English (en)
Inventor
Francesco PIERANNUNZI
Davide RENZETTI
Lorenzo CAPRANICO
Original Assignee
Dometic Sweden Ab
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 Dometic Sweden Ab filed Critical Dometic Sweden Ab
Publication of WO2024023722A1 publication Critical patent/WO2024023722A1/fr

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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
    • H01M50/20—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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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
    • 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
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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

  • This invention relates to a battery assembly and to a method for manufacturing a battery assembly.
  • the invention relates to a battery assembly (or battery pack) for vehicles, for example, campers, water-borne vehicles or electric vehicles.
  • the aim of this disclosure is to provide a battery assembly, a method for manufacturing a battery assembly and a method for charging a battery assembly to overcome the above mentioned drawbacks of the prior art.
  • the aim of this invention is to provide a battery assembly, a method for manufacturing a battery assembly and a method for charging a battery assembly capable of reaching high capacities, up to 150 Ah, for example.
  • a further aim of this invention is to provide a battery assembly that can be coupled with any battery charger.
  • an aim of this invention is to provide a battery assembly which can be charged quickly and efficiently.
  • Another aim of this invention is to provide a battery assembly that is easy to assemble.
  • a further aim of this invention is to propose a battery assembly that can be used in any weather conditions, especially at low temperatures.
  • the battery assembly comprises a battery cell stack, including a plurality of battery cells.
  • Each of the plurality of battery cells is a rechargeable battery cell.
  • each of the plurality of battery cells is a lithium-based cell, for example, LiFePO4.
  • the battery cell stack includes a positive terminal and a negative terminal.
  • the battery assembly comprises a casing that is box-shaped.
  • the casing has a base and a lateral wall.
  • the lateral wall includes a first and a second short sidewall.
  • the lateral wall includes a first and a second long sidewall.
  • the battery assembly comprises a cover plate, configured to be (operatively) coupled with the casing to define an internal volume delimited by the base and the lateral wall of the casing and by the cover plate.
  • the battery assembly comprises a battery management system, including an electronic board.
  • the battery management system or the electronic board is connected to the battery cell stack (that is, to the positive terminal and the negative terminal of the battery cell stack).
  • the electronic board has a flat shape, extending along a reference plane, and a pair of main sides parallel to the reference plane.
  • the pair of main sides of the electronic board defines a pair of faces of the electronic board.
  • the casing comprises a first partition element arranged in the internal volume.
  • the first partition element is arranged parallel to the short sidewalls.
  • the first partition element may extend mainly (or entirely) along an extension plane, so that the first partition element is arranged in the internal volume with the extension plane parallel to the short sidewalls.
  • the first partition element is proximal (that is, close or relatively close) to the first short sidewall and distal (that is, distant or relatively distant) to the second short sidewall (that is, the first partition element is closer to the first short sidewall than it is to the second short sidewall).
  • the first partition element divides the internal volume into a first subvolume on the side of the first short sidewall (that is, adjacent to the first short sidewall), and a second sub-volume on the side of the second short sidewall (that is, adjacent to the second short sidewall). That way, the internal volume is divided into a first sub-volume and a second subvolume, the first sub-volume being smaller than the second sub-volume.
  • the electronic board is arranged in the first sub-volume, with one of the two main sides of the electronic board facing the first short sidewall (that is, with the reference plane perpendicular to the base of the casing).
  • the electronic board may be arranged in the second sub-volume, with one of the two main sides facing the cover plate (that is, with the reference plane parallel to the base of the casing).
  • the electronic board substantially (or entirely) extends along a reference plane (so that the reference plane defines a main or principal plane of extension for the electronic board).
  • the electronic board is arranged in the first sub-volume with the reference plane oriented parallel to the first short side wall.
  • the electronic board has substantially the same extension along the reference plane as the short sidewall to which is faced (in particular, the first short sidewall).
  • An electronic circuit (or electronic components) of the electronic board lie (are located) on the electronic board along a plane which is parallel to the first short sidewall.
  • An electronic circuit (or electronic components) of the electronic board are mainly (or entirely) located on the main side of the electronic board that faces the first short sidewall.
  • the casing comprises a plurality of second partition elements.
  • the second partition elements of the plurality are configured to divide the second sub-volume into a plurality of compartments.
  • the battery cells of the plurality of battery cells are arranged in a plurality of battery cell groups and each battery cell group is accommodated in a corresponding compartment of the plurality of compartments.
  • the function of the first partition element is to divide the internal volume into the first sub-volume, which accommodates the electronic board, with one of the two main sides facing the first short sidewall, and the second sub-volume, which accommodates the plurality of battery cells.
  • the second partition elements divide the second subvolume in such a way as to be able to accommodate the plurality of battery cells in the compartments in groups. This division is particularly advantageous: for example, it is possible to use the same 150 Ah battery pack to obtain 120 Ah by simply leaving one or more compartments of the second sub-volume empty.
  • the cover plate includes a protrusion that extends into the internal volume.
  • the cover plate may comprise a pair of handles and each handle may include a protrusion that extends into the internal volume.
  • the plurality of second partition elements may include a short partition element, arranged in the second sub-volume, parallel to the short sidewalls.
  • the short partition element is preferably vertically aligned with the protrusion and is configured to create an empty space in the second sub-volume to accommodate the protrusion.
  • the short partition element is preferably vertically aligned with the protrusion thus generating an empty space in the second sub-volume to accommodate the protrusion.
  • the short partition element is preferably vertically aligned with the protrusion so that an empty space in the second sub-volume is generated to accommodate the protrusion.
  • Each of the plurality of battery cells may be a pouch cell, or a cylindrical cell or, more preferably, a prismatic cell.
  • the plurality of second partition elements includes a long partition element, arranged parallel to the first and second long sidewalls.
  • the long partition element is equidistant from the first long sidewall and second long sidewall.
  • the long partition element may be proximal to the first long sidewall (or the second long sidewall) and distal to the second long sidewall (or to the first long sidewall).
  • each battery cell is a prismatic battery cell
  • each cell has a rectangular top face lying in a plane parallel to the base of the casing and the top face has a first edge and a second edge.
  • At least one of the plurality of compartments has a first length, defined parallel to the short sidewalls, and a second length, defined parallel to the long sidewalls.
  • the first length may be an integer multiple of the length of the first edge.
  • the second length may be an integer multiple of the length of the second edge.
  • the first length may be an integer multiple of the length of the second edge, and the second length may be an integer multiple of the length of the first edge.
  • each battery cell is a cylindrical battery cell
  • each cell has a circular top face lying in a plane parallel to the base of the casing, the top face having a diameter.
  • At least one of the plurality of compartments has a first length, defined parallel to the short sidewalls, and a second length, defined parallel to the long sidewalls.
  • the first length of at least one of the plurality of compartments may be an integer multiple of the length of the diameter.
  • the second length of at least one of the plurality of compartments may be an integer multiple of the length of the diameter.
  • the casing is manufactured as one piece together with the plurality of second partition elements and/or with the first partition element.
  • the casing is provided as one piece together with the plurality of second partition elements and/or with the first partition element.
  • first and the second long sidewall are 375 mm in length
  • first and the second short sidewall are 175 mm in length
  • the long sidewall and the short sidewall are each 190 mm in height, where the height is defined along a plane parallel to the base of the casing.
  • each of the plurality of battery cells has a height, defined along a plane parallel to the base of the casing, and the height of each battery cell is substantially equal to the height of each long sidewall and each short sidewall of the casing.
  • the battery assembly comprises a DC/DC converter.
  • the battery management system is connected to the DC/DC converter to control the DC/DC converter.
  • the electronic board may comprise a DC/DC converter.
  • the DC/DC converter (or the battery management system through the DC/DC converter) is configured to manage a charging mode of the battery assembly. In the charging mode, the battery cell stack can be coupled with a battery charger to receive a charging current or voltage by which the battery cell stack is charged.
  • the DC/DC converter is configured to adapt, or adjust, a current or voltage fed to the battery cell stack (that is, to the positive terminal and to the negative terminal of the battery cell stack) in the charging mode. That way, the battery cell stack can be charged with a battery charger that is not specific for lithium battery cells (for example, a car battery or lead/acid battery charger).
  • the battery management system is programmed to detect the type of power source (specifically from a battery charger) and to connect the DC/DC converter to adapt it to the power source detected.
  • the battery management system (or a voltage or current sensor of the battery management system) is configured to detect an input voltage or current value fed to the battery cell stack and the DC/DC converter, based on the input voltage or current value detected by the battery management system, is configured to adapt the input voltage or current value fed to the battery cell stack.
  • the DC/DC converter comprises an inductor for regulating the feed voltage or current.
  • the battery assembly comprises a positive electrode, connected to the positive battery terminal, and a negative electrode, connected to the negative battery terminal. The positive electrode and the negative electrode are accessible externally to the internal volume.
  • the battery assembly comprises a bypass system.
  • the bypass system is configured to divert a current.
  • the bypass system may comprise a bypass switch, more preferably, a MOSFET switch.
  • the bypass system may be operable in an open configuration and in a closed configuration.
  • the bypass system connects the positive electrode to the positive terminal and bypasses the DC/DC converter.
  • the bypass system connects the positive electrode to the positive terminal via the DC/DC converter.
  • the battery management system is configured for commutating the bypass system from the closed configuration to the open configuration and vice versa, for example, based on a predetermined condition, responsive to a detected parameter compared to a reference value.
  • the detected parameter may include a temperature, a current or a voltage.
  • the bypass system or the bypass switch is connected in parallel to the DC/DC converter.
  • the battery assembly or the bypass system or, more preferably, the DC/DC converter comprises a switch, configured to electrically connect and disconnect the DC/DC converter to and from the positive electrode, when the bypass system is in the open configuration.
  • the switch may be operable in a closed configuration, where it electrically connects the positive terminal to the positive electrode through the DC/DC converter.
  • the switch may be operable in an open configuration, where it electrically disconnects the positive terminal from the DC/DC converter and from the positive electrode.
  • the switch may be connected in series to the DC/DC converter.
  • the battery management system is configured for commutating the switch between the closed configuration and the open configuration, based on a drive signal, for example.
  • the drive signal may be generated by a user interacting with a software application (for example, with a digital switch) or by a user interacting with a switch that is accessible externally to the battery pack.
  • the battery management system (that is, the electronic board) comprises a balancer circuit.
  • the balancer circuit may be of the active type or, more preferably, of the passive type.
  • the balancer circuit is configured to balance the charge of the plurality of battery cells.
  • the DC/DC converter is configured for forcing a charging current during a maintenance mode of the balancing of the charge of the plurality of battery cells. That way, it is possible for the battery cell stack to be fully charged quickly.
  • the electronic board comprises high power electric connectors.
  • the high power electric connectors comprise a positive connector, connected to the positive terminal and a negative connector, connected to the negative terminal of the battery cell stack.
  • the positive connector is located on a first edge of one main side of the electronic board and the negative connector is located on a second edge of the selfsame main side of the electronic board, where the second edge is opposite to the first edge.
  • the electronic board comprises a plurality of shunt resistors, configured for sensing a current. The shunt resistors may be disposed parallel to each other along one main side of the electronic board.
  • Each of the plurality of shunt resistors has a low resistance value (for example, between 10 mOhm and 1 mOhm, more preferably, 5 mOhm) and a high supported power value (for example, between 5W and 1W, more preferably, 3W).
  • the shunt resistors are located adjacent to the negative connector.
  • the electronic board comprises a plurality of aluminium plates (connected to the electronic board) configured for dissipating heat.
  • the plurality of aluminium plates comprises a first aluminium plate, located adjacent to the positive connector.
  • the plurality of aluminium plates may comprise a second aluminium plate, located adjacent to the negative connector.
  • the electronic board comprises a plurality of MOSFETs.
  • the plurality of MOSFETs forms the bypass system.
  • the plurality of MOSFETs is located adjacent to the positive connector or to the second aluminium plate, more preferably, between the positive connector and the second aluminium plate.
  • the MOSFETs are disposed parallel to each other along one main side of the electronic board. That way, the heat produced by the current passing through them is dissipated more efficiently.
  • the battery assembly of this disclosure constitutes a device that can be put in communication with other devices such as, for example, another battery assembly, a display, a battery charger, a charge regulator and other devices.
  • the battery assembly comprises a port, configured to receive a connector.
  • the battery assembly may comprise a second port, configured to receive a connector.
  • the first and the second port may be connected in series, or in parallel, so that a signal received at the first port is transmitted to the second port, and vice versa.
  • the first and/or the second port is configured to connect the battery assembly to an external device, for example, through a bus comprising a connector, to allow signals to be exchanged between the battery assembly and the external device.
  • the system comprises a plurality of devices.
  • one of the devices of the plurality of devices is a battery assembly according to one or more aspects of this disclosure.
  • Each device includes a control unit (for example, the battery management system may define a control unit for the battery assembly).
  • each device is operable in a master configuration and in a slave configuration.
  • the plurality of devices comprises a battery assembly and a display, and the battery assembly and the display are operable in a master configuration and in a slave configuration.
  • Each device may include a first port and a second port, where the first and the second port may be connected to each other in parallel so that a signal received at the first port is transmitted to the second port, and vice versa.
  • the first port and the second port may each be configured to receive a connector.
  • the plurality of devices may be interconnected through buses interconnected with the ports of the devices.
  • the plurality of devices preferably interconnected, defines a network.
  • the interconnected devices are connected to each other in parallel.
  • the interconnected devices can exchange signals with each other according to a LIN communication protocol.
  • the control unit of each interconnected device manages communication between ports of interconnected devices according to a LIN communication protocol.
  • Each of the plurality of devices comprises an address to identify the device uniquely when it is connected to another of the plurality of devices.
  • the address is associated with the device during production of the device.
  • the plurality of devices may comprise a pair of the same type of devices (for example, a first battery assembly and a second battery assembly); in this case, the first device of the pair (or first battery assembly) comprises a first sub-address and the second device of the pair (or second battery assembly) comprises a second sub-address.
  • each control unit is configured to associate a sub-address to each device.
  • each port has a plurality of pins.
  • each bus has a plurality of cables.
  • the plurality of pins and the plurality of cables may define a first channel for exchanging signals between the devices.
  • the plurality of pins and the plurality of cables may define a second channel.
  • the control unit is configured to receive and send commands through the second channel, in particular, to set the device to the master configuration or to the slave configuration.
  • the plurality of devices defines a device in a master configuration and a group of devices in a slave configuration.
  • the system thus defines a master-slave network, that is to say, the network comprises a master device and a plurality of slave devices, where the master device is configured to poll the plurality of slave devices to receive signals or data.
  • Each slave device is configured to transmit signals or data to the master device, based on a request (or polling) from the master device.
  • the system is configured to define the master device and the plurality of slave devices from among the plurality of devices.
  • the plurality of devices is configured to be interconnected and the system defines the master device and the plurality of slave devices from among the plurality of interconnected devices (that is to say, the moment the plurality of devices are connected).
  • the plurality of pins comprises a first, a second and a third pin
  • the plurality of cables comprises a first, a second and a third cable.
  • the first and the second pin and the first and the second cable define the first channel
  • the third pin and the third cable define the second channel.
  • Each of the plurality of pins is operable between a high configuration, in which a state of the corresponding pin is High (or 12V), and a low configuration, in which the state of the corresponding pin is Low (or OV).
  • the control unit is configured to commutate a pin of the plurality from a high configuration to a low configuration, and vice versa.
  • the control unit (for each of the interconnected devices) is programmed to set a pin, preferably the third pin of the respective device, to the low configuration.
  • the control unit is configured to commutate the third pin from the low configuration to the high configuration, based on (that is, at the end of) a standby time, where the standby time is characteristic of each device and is measured from the instant the third pin is set to the low configuration.
  • control unit is configured to set (that is, to force) the third pin to the low configuration for a length of time equal to the standby time characteristic of the respective device and, preferably, to commutate the third pin from the low configuration to the high configuration when such time has elapsed.
  • Each control unit is configured to read the state of the third pin of each of the plurality of devices and to set (its own or the corresponding) device to the master configuration or the slave configuration based on the reading of the state. More specifically, for each device, the control unit can set the device to the master configuration based on a High state of each of the plurality of devices. For each device, the control unit can set the device to the slave configuration based on a Low state of at least one of the plurality of devices.
  • one of the plurality of devices comprises a Bluetooth transceiver, configured to exchange radio signals between the device (or battery assembly) and a mobile device, in which a software application is installed).
  • the software application is preferably configured to receive data from the device (or from the battery assembly) and to display them, where the data relates to the devices of the plurality of devices and where the devices may be interconnected.
  • the device set to the master configuration may be configured to receive and transmit data relating to the plurality of devices (preferably set to the slave configuration) from and to the software application, preferably through the Bluetooth transceiver.
  • the device set to the slave configuration may be configured to receive and transmit data relating to the plurality of devices, preferably through the Bluetooth transceiver.
  • This disclosure also provides a method for manufacturing a battery assembly, where the battery assembly is preferably made according to one or more aspects of this disclosure.
  • the method comprises a step of assembling a battery cell stack, where the battery cell stack includes one or more aspects of this disclosure.
  • the method comprises a step of providing a casing, where the casing is made according to one or more aspects of this disclosure.
  • the method comprises a step of providing a cover plate, where the cover plate is made according to one or more aspects of this disclosure.
  • the method comprises a step of providing the casing with a first partition element, the first partition element being made according to one or more aspects of this disclosure.
  • the first partition element may extend mainly (or entirely) along an extension plane, so that the first partition element is arranged in the internal volume with the extension plane parallel to the short sidewall.
  • the method may comprise a step of providing an electronic board, having a flat shape extending along a reference plane and a pair of main sides parallel to the reference plane, and arranging the electronic board in the first sub-volume, with one of the main sides of the electronic board facing the first short sidewall.
  • the electronic board can be arranged in the first sub-volume with the reference plane perpendicular to the base of the casing.
  • the electronic board substantially (or entirely) extends along a reference plane (so that the reference plane defines a main or principal plane of extension for the electronic board).
  • the electronic board is arranged in the first sub-volume with the reference plane oriented parallel to the first short side wall.
  • the electronic board has substantially the same extension along the reference plane as the short sidewall to which is faced (in particular, the first short sidewall).
  • An electronic circuit (or electronic components) of the electronic board lie (are located) on the electronic board along a plane which is parallel to the first short sidewall.
  • An electronic circuit (or electronic components) of the electronic board are mainly (or entirely) located on the main side of the electronic board that faces the first short sidewall.
  • the method comprises a step of providing a plurality of second partition elements.
  • the second partition elements may be configured to divide the second sub-volume into a plurality of compartments.
  • the method may comprise a step of arranging the battery cells of the plurality of battery cells in a plurality of battery cell groups.
  • the method may include a step of accommodating each battery cell group in a corresponding compartment.
  • the method comprises a step of manufacturing the casing as one piece together with the plurality of second partition elements.
  • the method may comprise a step of providing a DC/DC converter, where the DC/DC converter is made according to one or more aspects of this disclosure.
  • the method comprises a step of arranging the DC/DC converter in the first sub-volume.
  • the method may comprise a step of connecting a positive electrode to the positive battery terminal, and a negative electrode to the negative battery terminal, where the positive electrode and the negative electrode are accessible externally to the internal volume.
  • the method comprises a step of providing a bypass system according to one or more aspects of this disclosure.
  • the bypass system is controlled by a battery management system to commutate it between an open configuration, in which the bypass system connects the positive electrode to the positive battery terminal via the DC/DC converter, and a closed configuration in which the bypass system connects the positive electrode to the positive battery terminal and bypasses the DC/DC converter.
  • the battery assembly comprises a battery cell stack according to one or more aspects of this disclosure.
  • the battery assembly comprises a casing and a cover plate which can be applied to the casing (operatively coupled to the casing) to define an internal volume in which the battery cell stack is housed.
  • the battery assembly comprises a battery management system, including an electronic board connected to the battery cell stack, and a DC/DC converter connected to the battery management system.
  • the battery assembly comprises a temperature sensor system.
  • the temperature sensor system may include a board sensor.
  • the board sensor is preferably coupled with the electronic board to detect a temperature value of the board.
  • the temperature sensor system may include a battery cell sensor.
  • the battery cell sensor is preferably coupled with the battery cell stack to detect a temperature value of the battery cells.
  • the battery cell sensor may comprise a first battery cell sensor located on one of the plurality of sensors.
  • the battery management system is connected to the temperature sensor system.
  • the battery management system may receive the board temperature value and/or the battery cell temperature value.
  • the battery management system may be configured to control the charging of the battery cell stack.
  • the DC/DC converter (or the battery management system through the DC/DC converter) may be configured to manage a charging mode of the battery assembly, for example based on the board temperature value and/or to the battery cell temperature value.
  • the DC/DC converter can be configured to adapt, or to adjust a current or a voltage to be fed to the battery cell stack, for example based on the board temperature value and/or to the battery cell temperature value.
  • the system may be configured to control the DC/DC converter based on the board temperature value or the battery cell temperature value or both.
  • the battery management system may be configured to control the draining of the battery cell stack.
  • the DC/DC converter is configured to limit an input charging current fed to the battery cell stack.
  • the converter limits the input charging current based on a drive signal processed by the battery management system.
  • the drive signal may be processed based on the board temperature value or the battery cell temperature value or both.
  • the battery management system may be configured to compare the board and/or the battery cell temperature value with a predetermined threshold value of the board and/or battery cell temperature in order to process a drive signal based on the comparison.
  • the threshold value of the battery cell temperature may be between 40°C and 50°C; preferably, the temperature threshold value is 45°C.
  • the DC/DC converter is configured to limit the charging current to a value between 2A and 0.5A, preferably 1 A.
  • the battery management system is programmed to monitor the temperature sensor system and to generate an alert signal, for example, responsive to a condition based on the signals detected by the temperature sensor system.
  • the battery management system is configured to process the alert signal based on the threshold value of the battery cell temperature, and to send the alert signal to an application software usable by a user to display an alarm notice.
  • the battery management system processes an alert signal based on the threshold value of the battery cell temperature and sends the alert signal to a LED indicator to emit a light signal, where the LED indicator is located on the casing of the battery assembly.
  • the battery management system processes an alert signal based on the threshold value of the battery cell temperature and sends the alert signal to a display to display an alarm notice, where the display is located on a short sidewall or a long sidewall of the battery pack casing.
  • the threshold value of the battery cell temperature is greater than 60°C. In an example, the threshold value of the battery cell temperature is less than -20°C.
  • the battery assembly comprises a heating system.
  • the heating system includes a group of heating elements.
  • the group of heating elements is coupled with the battery cell stack to heat the battery cell stack.
  • the battery management system may be connected to the heating system to control the heating system based, for example, on the threshold value of the battery cell temperature.
  • the group of heating elements comprises a first heating element, arranged between the first long sidewall of the casing and the battery cell stack.
  • the group of heating elements comprises a second heating element, arranged between the second long sidewall of the casing and the battery cell stack.
  • the group of heating elements comprises a third heating element, arranged between the battery cells of the plurality of battery cells. More specifically, the third heating element is arranged at a second partition element, for example, at the long partition element or the short partition element.
  • one or more of the heating elements include (or are constituted by) one or more heating films or tapes. These heating films are thin (relative to their surface area) and are preferably flexible, that is, deformable.
  • the temperature sensor system includes a heating element sensor.
  • the heating element sensor is coupled with the group of heating elements to detect a temperature value of the heating elements of the group of heating elements.
  • the heating element sensor comprises a first sensor, located on the first heating element.
  • the heating element sensor may comprise a second sensor, located on the second heating element, and/or a third sensor, located on the third heating element.
  • the battery management system controls the temperature of the group of heating elements responsive to the temperature value of the heating elements. More specifically, the battery management system controls the temperature (preferably independently) of the first heating element and/or of the second heating element and/or of the third heating element, preferably responsive to the temperature value of the respective heating element.
  • the battery management system is configured to compare the value of a heating element (the first and/or the second and/or the third heating element) with a threshold temperature value for the heating elements.
  • the battery management system is programmed for controlling the heating elements so to avoid that the temperature sensed by the heating element sensors exceed the threshold temperature value (the threshold temperature value, for example, is set to a value ranging from 55°C and 65°C, in particular, it can be set to 60°C).
  • the battery management system is programmed to derive a temperature difference between each temperature value of the heating elements (the first and/or the second and/or the third heating element) and the battery cell temperature value.
  • the battery management system may be programmed to control the heating elements, in such a way that the temperature difference does not exceed a predetermined threshold value, preferably ranging between 25°C and 35°C, specifically, the threshold value may be 30°C.
  • the battery management system includes an activation threshold value; the battery management system is programmed for starting the heating of the cells, responsive to the sensed cell temperature being lower than the activation threshold value.
  • the heating elements can be activated if the cell temperature is below O°C.
  • the battery management system is configured to adjust an input power supplied to the heating elements, by modulating the pulse width (PWM). More specifically, the battery management system can adjust an input power to the heating elements on the basis of the available power from a battery charger. The battery management system can adjust an input power to the heating elements (to the first heating element, the second heating element and the third heating element) by varying a power dissipated by the heating elements (by the first heating element, the second heating element and the third heating element).
  • PWM pulse width
  • the battery management system can adjust an input power to the heating elements (to the first heating element, the second heating element and the third heating element) by varying a power dissipated by the heating elements (by the first heating element, the second heating element and the third heating element).
  • the temperature sensor system (the board sensor) comprises a MOSFET temperature sensor, located in a plurality of MOSFETs of the electronic board, for detecting the MOSFET temperature value of the plurality of MOSFEts.
  • the temperature sensor system (the board sensor) comprises a shunt temperature sensor, located in a plurality of shunt resistors of the electronic board, for detecting the shunt temperature value of the plurality of shunt resistors.
  • the temperature sensor system (the board sensor) comprises a DC/DC temperature sensor, located on the DC/DC converter of the electronic board, for detecting a DC/DC temperature value of the DC/DC converter.
  • the temperature sensor system (the board sensor) comprises a main board temperature sensor, located on one of the two main sides of the electronic board for detecting a circuit temperature value of a printed circuit on the main side, where the electronic board has a flat shape extending along a reference plane and the two main sides are parallel to the reference plane.
  • the battery assembly comprises a switch configured to electrically connect or disconnect the positive terminal to/from the positive electrode depending on one or more of the following conditions:
  • the battery assembly comprises a battery cell stack, including a plurality of battery cells, where each of the plurality of battery cells is a rechargeable lithium battery cell, and a positive terminal and a negative terminal; a casing and a cover plate which can be applied to the casing (operatively coupled to the casing) to define an internal volume in which the battery cell stack is housed; a battery management system, including an electronic board connected to the battery cell stack; a DC/DC converter, connected to the battery management system.
  • the method may comprise a step of detecting, performed by a board sensor.
  • the board sensor may be coupled with the electronic board to detect a board temperature value.
  • the method may comprise a step of detecting, performed by a battery cell sensor.
  • the battery cell sensor is preferably coupled with the battery cell stack to detect a temperature value of the battery cells.
  • the method may comprise a step, performed by the battery management system, of receiving the board temperature value and the battery cell temperature value.
  • the DC/DC converter (or the battery management system through the DC/DC converter) may manage or control a charging mode of the battery assembly, for example based on the board temperature value and/or to the battery cell temperature value.
  • the method can comprise a step, by the DC/DC converter (or by the battery management system through the DC/DC converter) of managing or controlling a charging of the battery assembly, for example based on the board temperature value and/or the battery cell temperature value.
  • the DC/DC converter can adapt, or adjust a current or a voltage to be fed to the battery cell stack, for example based on the board temperature value and/or to the battery cell temperature value.
  • the method can comprise a step, by the DC/DC converter, of adapting od adjusting a current or a voltage to be fed to the battery cell stack, for example based on the board temperature value and/or the battery cell temperature value.
  • the method may comprise a step, performed by the battery management system, of controlling the charging and/or draining of the battery cell stack and/or of the DC/DC converter based on the board temperature value or the battery cell temperature value or both.
  • the method comprises a step, performed by a heating element sensor, in which the heating sensor is coupled with the group of heating elements, of detecting temperature values of the heating elements of the group of heating elements.
  • the method may comprise a step, performed by the battery management system, of receiving the heating element temperature values.
  • the method may comprise a step, performed by the battery management system, of controlling the temperature of the group of heating elements based on the temperature value of the battery cells and/or based on the temperature values of the heating elements, for example by modulating the pulse width of an input power supplied to the heating elements.
  • the method comprises a step of controlling the bypass system or the switch based on one or more of the following conditions:
  • the method comprises a step of transmitting and receiving a signal between a first port and a second port, where the first port and the second port are each configured to receive a connector and where the first port and the second port are connected to each other in parallel.
  • the method may include a step, performed by the first port and the second port, of connecting the battery assembly to an external device through a bus that includes the connector.
  • the method may include a step of exchanging signals between the battery assembly and the external device.
  • FIG. 1 -7 illustrate a battery assembly 1 according to one or more aspects of this disclosure
  • FIG. 8 illustrates an electronic board 51 according to one or more aspects of this disclosure
  • FIG. 9 illustrates a system 100 according to one or more aspects of this disclosure
  • FIG. 11 represents a sequence of steps in the use of a system 100 according to an operating example. Detailed description of preferred embodiments of the invention
  • the numeral 1 in the drawings denotes a battery assembly.
  • the battery assembly 1 comprises a casing 3 that is box-shaped.
  • the casing 3 includes a base 31 and a lateral wall 32.
  • the lateral wall 32 includes a first short sidewall 321a, a second short sidewall 321 b, a first long sidewall 322a and a second long sidewall 322b.
  • the battery assembly 1 comprises a cover plate 4 (operatively) coupled with the casing 3 to define an internal volume 30 delimited by the base 31 and the lateral wall 32 (the first short sidewall 321a, the second short sidewall 321 b, the first long sidewall 322a and the second long sidewall 322b).
  • the casing 3 preferably has the size of a standard L5 case. More specifically, the first long sidewall 322a and the second long sidewall 322b are 375 mm in length, and the first short sidewall 321 a and the first short sidewall 321 b are 175mm in length.
  • the long sidewalls 322a, 322b and the short sidewalls 321 a, 321 b each have a height of 190 mm, defined along the plane B parallel to the base 31 of the casing 3.
  • the casing 3 comprises a first partition element 33, located in the internal volume 30 and arranged parallel to the first short sidewall 321 a and the second short sidewall 321 b. More specifically, the first partition element 33 is closer to the first short sidewall 321a than it is to the second short sidewall 321 b. That way, the first partition element 33 divides the internal volume 30 of the battery assembly 1 into a first sub-volume 301 and a second sub-volume 302, where the first sub-volume 301 is smaller than the second sub-volume 302.
  • the battery assembly 1 comprises a battery cell stack 2, including a plurality of battery cells 200.
  • Each battery cell 200 is a rechargeable, LiFePO4 battery cell, preferably prismatic.
  • Each battery cell 200 has a rectangular top face lying in a plane B parallel to the base 31 of the casing 3, and the top face has a first edge 200a and a second edge 200b.
  • Each battery cell 200 also has a height (or third edge) 200c, defined along a plane B parallel to the base 31 and equal to the height of the long sidewalls 322a, 322b and the short sidewalls 321 a, 321 b.
  • the casing comprises a plurality of second partition elements 34, including a short second partition element 341 and a long second partition element 342.
  • the short second partition element 341 is arranged in the second sub-volume 302, parallel to the first short sidewall 321 a and the second short sidewall 321 b, proximal to the second short sidewall 321 b and distal to the first short sidewall 321 a.
  • the cover plate 4 comprises a pair of handles 41a and 41 b.
  • One handle of the pair 41 a and 41 b comprises a protrusion 411 that extends into the internal volume 30 and the short partition element 341 is vertically aligned with the protrusion 411 to leave space in the second sub-volume 302 and to accommodate the protrusion 411 .
  • the long second partition element 342 is arranged in the second sub-volume 302, parallel to the first long sidewall 322a and the second long sidewall 322b, and equidistant from the first long sidewall 322a and the second long sidewall 322b.
  • the short second partition element 341 and the long second partition element 342 are arranged perpendicularly to each other and divide the second sub-volume 302 into a plurality of compartments 303 (specifically, four compartments 303).
  • the battery cells 200 are arranged in a plurality of battery cell groups 20 (specifically, four battery cell groups 20) and each battery cell group 20 is accommodated in a compartment 303.
  • the battery cells 200 are arranged in such a way that the height 200c of the battery cells 200 is perpendicular to the plane B parallel to the base 31 of the casing 3.
  • the compartments 303 have a first length, defined parallel to the short sidewalls 321 a and 321 b and being an integer multiple of the length of the first edge 200a.
  • the compartments 303 have a second length, defined parallel to the long sidewalls 322a and 322b and being an integer multiple of the length of the second edge 200b.
  • the battery assembly 1 comprises a battery management system 5 for managing a process of charging and draining the battery cell stack 2.
  • the battery management system 5 comprises an electronic board 51.
  • the electronic board 51 has a flat shape extending along a reference plane P and a pair of main sides 511 a parallel to the reference plane P.
  • the electronic board 51 is arranged in the first sub-volume 301 and one of the main sides 511 a of the pair faces the first short sidewall 321 a.
  • the first partition element 33 defines a seat 311 for the electronic board 51 in which the electronic board 51 is partly inserted.
  • both the first partition element 33 and the plurality of second partition elements 34 are manufactured as one piece with the casing 3.
  • the battery cell stack 2 includes a positive terminal 21 and a negative terminal 22 connected, respectively, to a positive electrode 11 and a negative electrode 12 of the battery assembly, both accessible externally to the internal volume 30.
  • the positive electrode 11 and the negative electrode 12 can be coupled with an external battery charger to receive charging power.
  • the battery assembly 1 comprises a temperature sensor system 7.
  • the temperature sensor system 7 comprises a board sensor 71 and battery cell sensor 72.
  • the board sensor 71 is located on the electronic board 51 to detect a board temperature.
  • the battery cell sensor 72 is located on the battery cell stack 2, specifically on a top face of one of the plurality of battery cells 200, to detect a battery cell temperature 72a, representing the temperature of the battery cell stack 2.
  • the electronic board 51 comprises a positive connector 510a, connected to the positive battery terminal 21 , and a negative connector 510b, connected to the negative battery terminal 22. More specifically, the positive connector 510a and the negative connector 510b are located on a first edge 514 and on a second edge 513 of the main side 511 a, respectively.
  • the electronic board 51 comprises a plurality of shunt resistors 515 arranged along the main side 511 a of the board 51.
  • Each shunt resistor 515 has a resistance value of 5 mOhm and supports a 3W power.
  • the shunt resistors 515 are located adjacent to the negative connector 510b and configured to detect a current.
  • the electronic board 51 comprises a DC/DC converter 6.
  • the electronic board 51 comprises a plurality of MOSFETs 517 arranged along the main side 511 a of the board 51 , adjacent to the positive connector 510a.
  • the plurality of MOSFETs 517 constitutes a bypass system 13. More specifically, the bypass system 13 is connected in parallel to the DC/DC converter 6 and is operable in an open configuration and in a closed configuration. In the closed configuration of the bypass system 13, the bypass system 13 connects the positive electrode 11 to the positive battery terminal 21 and bypasses the DC/DC converter 6. In the open configuration of the bypass system 13, the bypass system 13 connects the positive electrode 11 to the positive battery terminal 21 via the DC/DC converter 6.
  • the DC/DC converter 6 comprises a switch 61 , connected in series to the DC/DC converter 6 and operable in an open configuration and in a closed configuration.
  • the battery management system 5 is configured to commutate the switch 61 between the closed configuration, in which it connects the positive terminal 21 of the battery cell stack 2 to the positive electrode 11 through the DC/DC converter 6, and the open configuration, in which it disconnects the positive battery terminal 21 from the positive electrode 11 to interrupt a current in the battery assembly 1 .
  • the electronic board 51 comprises a plurality of aluminium plates 516, including a first aluminium plate 516a, arranged adjacent to the plurality of MOSFETs 517, and a second aluminium plate 516b, arranged adjacent to the plurality of shunt resistors 515.
  • the electronic board 51 comprises a driver 518 for the plurality of MOSFETs 517, located adjacent to the plurality of MOSFETs 517 to control them.
  • the electronic board 51 comprises an interface connector 519 for connecting the electronic board 51 to an external interface board usable by a user.
  • the electronic board 51 comprises a bus cable communication zone 520 and a plurality of auxiliary connections 521.
  • the electronic board 51 comprises a heating element management system 522 for managing the temperature of the heating elements 80.
  • the electronic board 51 comprises a current management system 523, for managing the current measurements performed by the shunt resistors 515, where the current management system is located adjacent to the plurality of shunt resistors 515.
  • the electronic board 51 comprises a connection zone for a current sensor 523 for measuring the current from the plurality of battery cells 200 and from the heating elements 80.
  • the electronic board 51 comprises a microcontroller 525 for controlling the components of the electronic board 51 .
  • the electronic board 51 comprises a data storage 526, connected to the microcontroller 525 by an SPI connection and configured to store information about the operation of the battery assembly 1 and alarm situations, if any.
  • the electronic board 51 comprises a plurality of balance resistors 527 to make up a balancer circuit of the battery cell stack 2.
  • the board sensor 71 comprises a MOSFET temperature sensor 71 a, located on the plurality of MOSFETs 517 of the electronic board 51 , for detecting a value of MOSFET temperature of the plurality of MOSFETs 517.
  • the board sensor 71 comprises a shunt temperature sensor 71 b, located on the plurality of shunt resistors 515 of the electronic board 51 , for detecting a value of shunt temperature 711 b of the plurality of shunt resistors 515.
  • the board sensor 71 comprises a DC/DC temperature sensor 71 c, located on the DC/DC converter 6 of the electronic board 51 , for detecting a DC/DC temperature value 711 c of the DC/DC converter 6.
  • the board sensor 71 comprises a main board temperature sensor 71 d, located the main side 511 a of the pair of main sides 511 a, 511 b of the electronic board 51 for detecting a circuit temperature value 711d of a printed circuit on the main side 511 a.
  • the battery assembly 1 comprises a heating system 8 including a group of heating elements 80.
  • the heating elements 80 of the group have a planar shape, extending along the plane P.
  • the group of heating elements 80 is configured to heat the battery cell stack 2.
  • the group of heating elements 80 comprises a first heating element 801 , arranged between the first long sidewall 321 b and the battery cell stack 2, a second heating element 802, arranged between the second long sidewall 322b and the battery cell stack 2, and a third heating element 803. arranged between one or more groups of cells 20, preferably at the long second partition element 342.
  • the temperature sensor system 7 comprises a heating element sensor 73, coupled with the group of heating elements 80. More specifically, the heating element sensor 73 is configured to detect a heating elements temperature 73a and comprises a first sensor, located on the first heating element 801 , a second sensor, located on the second heating element 802, and a third sensor, located on the third heating element 803, for detecting a temperature of the first heating element 801 , the second heating element 802 and the third heating element 803, respectively.
  • the battery management system 5 is configured for managing charging processes and draining processes of the battery cell stack 2, based on a current value (for example, detected by the shunt resistors 515) and/or based on a temperature value detected by the temperature sensor system 7 and/or based on a voltage value.
  • the bypass system 13 is in the closed configuration to connect the positive terminal 21 to the positive electrode 11 to allow current to pass between the positive terminal 21 and the positive electrode 11 .
  • the battery management system 5 switches the bypass system 13 to the open configuration to connect the positive terminal 21 to the positive electrode 11 by way of the DC/DC converter 6.
  • the battery management system 5 processes a control signal 91 for the DC/DC converter 6 to adjust the current intensity of the DC/DC converter 6.
  • the battery management system 5 receives a current value or a voltage value from an external battery charger and compares that value with a threshold value of current or voltage. Based on this comparison, it processes a control signal 91 and switches the bypass system 13 to the open configuration and the DC/DC converter 6 limits (or adapts) the current or voltage value to the threshold value while the battery cell stack 2 is being charged in order to charge the battery cells 200.
  • the battery management system 5 commutates the bypass system 13 to the open configuration and processes a control signal 91 for the DC/DC converter 6; the DC/DC converter 6 limits the charging current to 1 A. If the heating system 8 is not present, when the battery cell temperature 72a is less than 0°C, the battery management system 5 processes an alarm signal 92 and sends it to an external interface 93 or to a software application 94 usable by a user, or a control signal 91 to a LED indicator 95 to switch it on.
  • the battery management system 5 activates the heating elements 80;
  • the battery management system 5 adjusts the temperature of the heating elements 80 by modulating the pulse width to adjust the input power. More specifically, the power dissipated by the first heating element 801 , the second heating element 802 and the third heating element 803, is varied from 0 to 50W for each heating element 80.
  • the battery management system 5 diverts the charging current from the battery cell stack 2 to the heating elements 80 so as not to allow charging the battery cell stack 2.
  • the battery management system 5 derives a temperature difference between each temperature value of the first heating element 801 , the second heating element 802 and the third heating element 803 and the battery cell temperature 72a.
  • the battery management system 5 manages the input power to the heating elements 80 on the basis of the power available from a battery charger.
  • the battery management system 5 processes an alarm signal 92 and sends it to an external interface 93 or to a software application 94 usable by a user, or a control signal 91 to a LED indicator 95 to switch it on.
  • the battery management system 5 commutates the bypass system 13 to the open configuration and the battery management system 5 processes the alarm signal 92 and sends it to the external interface 93 or to the software application 94 usable by a user, or the control signal 91 to the LED indicator 95 to switch it on.
  • the battery management system 5 commutates the switch 130 of the DC/DC converter 6 to the open configuration to prevent current from passing and processes the alarm signal 92 and sends it to the external interface 93 or to the software application 94 usable by a user, or the control signal 91 to the LED indicator 95 to switch it on.
  • the balancer circuit and, specifically, the balance resistors 527 dissipate the excess energy of the cells 200 (that is to say, through a passive system for balancing the cells 200) to compensate for voltage imbalance between the cells 200.
  • the DC/DC converter 6 forces a charging current to restart balancing the battery cells 200.
  • the battery management system 5 receives a charging current value.
  • the battery management system 5 commutates the bypass system 13 from the closed configuration to the open configuration so that the required current is delivered by the battery cells 200 and not by the DC/DC converter 6.
  • the battery assembly 1 may form part of a system 100.
  • the system 100 comprises a plurality of devices 101.
  • the plurality of devices 10 may comprise the battery assembly 1.
  • Each device 101 comprises a control unit.
  • Each device 101 can be set in a master configuration 101 a or in a slave configuration 101 b, more preferably, the plurality of devices 101 comprises a group of devices, wherein each device 101 of the group can be set in a master configuration 101 a or in a slave configuration 101 b.
  • the group of devices 101 may include a battery assembly and/or a display.
  • Each device 101 comprises a first port 102 and a second port 103.
  • the first port 102 and the second port 103 are preferably RJ12 ports and are configured to receive an RJ12 connector.
  • the first port 102 and the second port 103 are connected in parallel and are configured to connect the plurality of devices 101 to each other, that is to say, to allow exchanging signals 105 between the plurality of devices 101.
  • the signals 105 exchanged between the devices 101 follow a LIN communication protocol.
  • the ports 102, 103 of the different devices are connected to each other by buses 104 interconnected with the ports 102, 103 of the device 101.
  • Each port 102, 103 has a plurality of pins and a corresponding plurality of cables.
  • the plurality of pins comprises a first pin, configured to be connected to earth, a second pin, configured to receive power supply, and a third pin.
  • the first and the second pin define a first communication channel.
  • the third pin defines a second communication channel.
  • Each pin, specifically the third pin, is operable between a high configuration, in which the state of the pin is High (12V), and a low configuration, in which the state of the pin is Low (OV).
  • each of the plurality of devices has a characteristic standby time, representing an order of priority of the device. For example, a device with a longer standby time has a higher priority than a device with a shorter standby time (for example, the battery assembly may have a characteristic standby time of 500 ms and play forming part of the plurality of devices may have characteristic standby time of 200ms).
  • each of the devices comprises a switch, for example a SIP switch, configured to set one of the two devices (preferably manually) to the slave configuration.
  • control unit After setting the third pin to the low configuration, the control unit waits for a length of time equal to the characteristic standby time of its device (step C). At the end of the standby time, the control unit forces the third pin to the high configuration (step D).
  • the control unit is configured to read the state of the third pin of the other devices. If at least one third pin of all the other third pins is in the low configuration (condition E), then the control unit sets its device to the slave configuration (step F). Alternatively to steps A-F, the device can be set to the slave configuration at power on (step A') or when the device is connected to the network.
  • the control unit keeps the third pin of its device in the high configuration and sets the device to the master configuration (step H). Therefore, the plurality of devices 101 defines a device in a master configuration 101 a and a group of devices in a slave configuration 101 b.
  • One of the devices 101 comprises a Bluetooth transceiver configured to exchange radio signals 106 with a mobile device comprising a software application 94.
  • the device 101 comprising the Bluetooth transceiver may be in the master configuration 101 a (in which case it exchanges Bluetooth signals 106 directly with the mobile device), or it may be in the slave configuration 101 b (in which case it receives a command from the device in the master configuration 101 a to send radio signals 106 to the mobile device).
  • the radio signals 106 comprise a plurality of data items, where each data item relates to a corresponding device 101 of the plurality of interconnected devices 101.
  • the mobile device is configured to display the data.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne un ensemble batterie pour camping-car comprenant : un empilement de cellules de batterie (2), comprenant une pluralité de cellules de batterie (200); un boîtier (3), ayant une base (31) et une paroi latérale (32), comprenant une première (321 a) et une seconde paroi latérale courte (322a) et une première (321b) et une seconde paroi latérale longue (322b); une plaque de couvercle (4), configurée pour être accouplée avec le boîtier (3) afin de délimiter un volume interne (30); un système de gestion de batterie (5), comprenant une carte électronique (51), connectée à l'empilement de cellules de batterie (2) et ayant une forme plate et une paire de côtés principaux (511a) parallèles à un plan de référence (P), le boîtier (3) comprenant un premier élément de séparation (33), disposé dans le volume interne (30) parallèlement aux parois latérales courtes (321a, 322a), à proximité de la première paroi latérale courte (321a) et à distance de la seconde paroi latérale courte (322a), respectivement, de manière à diviser le volume interne (30) en un premier sous-volume (301 ), du côté de la première paroi latérale courte (321a), et un second sous-volume (302), du côté de la seconde paroi latérale courte (322a), respectivement, et la carte électronique (51) étant disposée dans le premier sous-volume (301 ) et l'un des côtés principaux (511a) de la carte électronique (51) faisant face à la première paroi latérale courte (321a).
PCT/IB2023/057566 2022-07-27 2023-07-26 Ensemble batterie et procédé de fabrication d'un ensemble batterie WO2024023722A1 (fr)

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IT102022000015897A IT202200015897A1 (it) 2022-07-27 2022-07-27 Gruppo batteria e metodo per realizzare un gruppo batteria
IT102022000015897 2022-07-27

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070087266A1 (en) * 2005-10-18 2007-04-19 Debbi Bourke Modular battery system
GB2554747A (en) * 2016-10-07 2018-04-11 Univ Of The Western Cape Battery balancing component
US20220013821A1 (en) * 2018-11-30 2022-01-13 Yui Lung Tong Power supply apparatus and components thereof (thermal exchange)

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070087266A1 (en) * 2005-10-18 2007-04-19 Debbi Bourke Modular battery system
GB2554747A (en) * 2016-10-07 2018-04-11 Univ Of The Western Cape Battery balancing component
US20220013821A1 (en) * 2018-11-30 2022-01-13 Yui Lung Tong Power supply apparatus and components thereof (thermal exchange)

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