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WO2017183012A1 - Multicell rechargeable battery with a dynamic power management system - Google Patents

Multicell rechargeable battery with a dynamic power management system Download PDF

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Publication number
WO2017183012A1
WO2017183012A1 PCT/IB2017/052377 IB2017052377W WO2017183012A1 WO 2017183012 A1 WO2017183012 A1 WO 2017183012A1 IB 2017052377 W IB2017052377 W IB 2017052377W WO 2017183012 A1 WO2017183012 A1 WO 2017183012A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
management system
power management
tray
endcap
Prior art date
Application number
PCT/IB2017/052377
Other languages
French (fr)
Inventor
Justin EVANS
Original Assignee
Evans Justin
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 Evans Justin filed Critical Evans Justin
Priority to MX2018012846A priority Critical patent/MX2018012846A/en
Priority to GB1817098.5A priority patent/GB2564364A/en
Priority to US15/589,791 priority patent/US20190036175A1/en
Publication of WO2017183012A1 publication Critical patent/WO2017183012A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—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
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00038—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors
    • H02J7/00041—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors in response to measured battery parameters, e.g. voltage, current or temperature profile
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00038—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors
    • H02J7/00043—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors using switches, contacts or markings, e.g. optical, magnetic or barcode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • 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

  • PCT Patent Cooperation Treaty
  • the present invention relates generally to a multicell battery. More specifically, the present invention relates to a multicell battery that uses a reconfigurable circuit to modify the connections between each cell as required.
  • Batteries in present day are usually assembled using strips of conductive material, which is permanently soldered or sonically welded across the contacts of the battery's cells. This is done to create various types of series or parallel circuits. Once the conductive material is soldered or sonically welded into position, it is extremely difficult, if not impossible, to remove. The result is a rigid block of cells that now behave chemically, thermally, and electrically as a single unit. If a cell dies, the cell breaks the circuit, and the entire series is useless, even if the other cells within the series are functional. If the cell overheats, the waste heat infects nearby cells and can cause thermal runaway. Traditional multicell batteries are charged as a single unit. Traditional multicell batteries are discharged as a single unit. The assembled battery is often shrink-wrapped. Cells are often glued together to increase rigidity. These are all the reasons why lithium- ion batteries overheat, malfunction, catch on fire, explode, and prematurely die.
  • an objective of the present invention is to address these shortcomings by providing an apparatus and method for a more efficient, effective, and time convenient mechanical assembly of batteries.
  • the present invention provides a tool-less assembly which does not require soldering workstations nor sonic welding workstations. These workstations can become extremely expensive, particularly when assembling large batteries for homes, cars, trucks, trains, planes, and boats. A deep-neck sonic welding work station is extremely expensive. A battery can be assembled in a fraction of the time through the use of the present invention.
  • the present invention is also durable with vibration-resistant rigidity.
  • the current state of the art uses glue to create rigidity;
  • the present invention can withstand tremendous vibration and torque.
  • the final assembly of the present invention can be easily disassembled allowing the present invention to be conveniently serviced and repaired.
  • the current state of the art cannot be serviced or repaired.
  • the present invention also allows individual cells to be replaced with ease.
  • FIG. 1 is a perspective view of the present invention.
  • FIG. 2 is a perspective view of the first tray for the present invention.
  • FIG. 3 is a perspective view of the second tray for the present invention.
  • FIG. 4 is a schematic view of the power management system used in the present invention where dotted lines indicate electronic connectivity and solid bold lines indicate electrical connectivity.
  • FIG. 5 is a schematic view of the connections between the power management system, the arbitrary clamp, and at least one other clamp used in the present invention, wherein dotted lines indicate electronic connectivity and solid bold lines indicate electrical connectivity.
  • FIG. 6 is a schematic view of the connections between the microcontroller and the plurality of sensor suites used in the present invention, wherein each of the plurality of sensor suites is operatively coupled to the corresponding clamp.
  • FIG. 7 is a schematic view of the connections between the microcontroller, the corresponding clamp, and each of the sensors from the sensor suite used in the present invention, wherein dotted lines indicate electronic connectivity and solid bold lines indicate electrical connectivity.
  • the multicell rechargeable battery with a dynamic power management system is a device that enables the efficient power management of a plurality of rechargeable battery cells.
  • the present invention is a device that uses a reconfigurable circuit system to enable granular control of a battery system with multiple cells. That is, the present invention is a system that monitors the electrical state and the environmental conditions around each individual cell of a multicell battery. This granular control is used to shut off the flow of current to and from battery cells that are damaged, at risk of overcharging and at risk of over-discharging. Additionally, the present invention is able to modify the circuit connection between each cell, such that the cells can be transitioned between parallel and series connections in response to instructions from the dynamic power management system.
  • the present invention functions as a multicell battery with individual cells that can be easily replaced.
  • the present invention comprises an enclosure 1, a plurality of cell clamps 2, and a power
  • the enclosure 1 functions as the housing that acts as the structural foundation for the other components of the present invention.
  • the overall shape of the present invention is also defined by the enclosure.
  • the enclosure 1 comprises a first tray 11 and a second tray 12.
  • the first tray 11 and the second tray 12 are rigid panels that are used to hold the plurality of cell clamps 2 and the power management system 3 in desired positions and orientations.
  • the plurality of cell clamps 2 is the collection of components that retain the multiple cells of the multicell battery in electrical communication with the power management system 3. To that end, each of the plurality of cell clamps 2 comprises a first endcap 21, a second endcap 22, a first terminal 23, and a second terminal 24.
  • the plurality of cell clamps 2 is distributed throughout the enclosure 1 so that the present invention is able to hold a plurality of battery cells within the enclosure 1. Furthermore, the plurality of cell clamps 2 is positioned in between the first tray 11 and the second tray 12. Consequently, each clamp from the plurality of cell clamps 2 is used to sandwich an inserted battery cell between the first tray 11 and the second tray 12.
  • each clamp from the plurality of cell clamps 2 is used to hold a single inserted battery cell.
  • the first endcap 21 functions as the first jaw for each clamp from the plurality of cell clamps 2. Additionally, the first endcap 21 is mounted onto the first tray 11. As a result, the first endcap 22 is able to retain a first end of the inserted battery cell in a fixed position.
  • the first terminal 23 is mounted within the first endcap 21. Thus positioned, the first terminal 23 is able to maintain the first end of the inserted battery cell in electrical communication with the power management system 3. Likewise, the second endcap 22 is mounted onto the second tray 12.
  • the second endcap 22 functions as the second jaw of the clamp from the plurality of cell clamps 2 that retains a second end of the inserted battery cell in a fixed position.
  • the second terminal 24 is mounted within the second endcap 22 so that the second end of the inserted battery cell is maintained in electrical communication with the power management system 3.
  • the first endcap 21 is concentrically aligned with the second endcap 22. Consequently, the first endcap 21 and the second endcap 22 are able to function as receptacles for the ends of an elongated battery cell.
  • the first terminal 23 and the second terminal 24 are preferably spring contact terminals.
  • Both the first terminal 23 and the second terminal 24 are able to extend and contract if the inserted battery cell is jostled between the first tray 11 and the second tray 12. This ability to extend and contract enables the first terminal 23 and the second terminal 24 to maintain a constant electrical connection with the positive and negative terminals of the inserted battery cell while the clamp from the plurality of cell clamps 2 is clamped around the inserted battery cell.
  • the first terminal 23 and the second terminal 24 form the electrical connectors that enable the inserted battery cell to be electrically connected to the power management system 3.
  • the power management system 3 is a collection of electrical components that monitor each clamp from the plurality of cell clamps 2 to assess the operational capacity of the inserted battery cell. To that end, the power management system 3 is integrated into the enclosure 1. Additionally, the first terminal 23 and the second terminal 24 for each of the plurality of cell clamps 2 is electrically connected to the power management system 3. As a result, the power management system 3 is able to govern the operation of each of the plurality of cell clamps 2.
  • the power management system 3 comprises a first network of
  • the first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32 are circuits that can be dynamically modified to change the electrical connections between attached components.
  • the first terminal 23 of an arbitrary clamp 25 is electrically connected to the first terminal 23 of at least one other clamp 26 through the first network of reconfigurable multiway switches 31, wherein the arbitrary clamp 25 and the at least one other clamp 26 are from the plurality of cell clamps 2.
  • the second terminal 24 of the arbitrary clamp 25 is electrically connected to the second terminal 24 of the at least one other clamp 26 through the second network of
  • the present invention is able to reconfigure the electrical circuit that connects each of the plurality of cell clamps 2 to the power management system 3. For example, if an inserted battery cell in the arbitrary clamp 25 is defective, the first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32 can be directed to open the circuit between the defective inserted battery cell and the remaining inserted battery cells.
  • the microcontroller is used to manage the computerized commands of the present invention. To accomplish this circuit reconfiguration, the first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32 are electronically connected to the microcontroller 33. Accordingly, the microcontroller 33 dictates how the first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32 form connections between the plurality of cell clamps 2.
  • the present invention is able to accurately assess the operational capacity of the plurality of cell clamps 2 because the power management system 3 further comprises a plurality of sensor suites 34.
  • Each of the plurality of sensor suites 34 is a collection of environmental and electrical sensors that are used to detect conditions that include, but are not limited to, voltage, current,
  • each of the plurality of sensor suites 34 is operatively coupled to a corresponding clamp 27 from the plurality of cell clamps 2, wherein each of the plurality of sensor suites 34 is used to gather environmental data on the corresponding clamp 27. Consequently, each of the plurality of sensor suites 34 is able to collect data that determines if the power management system 3 should modify the connection or flow of current to the
  • each of the plurality of sensor suites 34 is electronically connected to the microcontroller 33.
  • the microcontroller 33 is able to interpret the data gathered by the plurality of sensor suites 34 and issue reconfiguration commands to the first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32. These reconfiguration commands should be able to mitigate any operational issues that arise from any individual battery cell.
  • each of the plurality of sensor suites 34 uses various types of sensors to assess the operational capacity of the inserted battery cell and the corresponding clamp 27.
  • each of the plurality of sensor suites 34 may comprise a voltmeter 341, an ammeter 342, an ohmmeter 343, a temperature sensor 344 or a combination thereof.
  • the voltmeter 341 is electrically connected in parallel between the first terminal 23 and the second terminal 24 so that the voltmeter 341 is able to measure the voltage between the first terminal 23 and the second terminal 24.
  • the ammeter 342 is electrically connected in series with the first terminal 23 and the second terminal 24. Thus connected, the ammeter 342 is able to determine the current flowing through the first terminal 23 and the second terminal 24.
  • the ohmmeter 343 is electrically connected in series with the first terminal 23 and the second terminal 24. Accordingly, the ohmmeter 343 is able to determine the resistance of the first terminal 23 and the second terminal 24. Finally, the temperature sensor 344 is in thermal
  • a primary purpose of the present invention is to provide a multicell battery with cells that are both easy to replace, yet remain in electrical communication with the plurality of cell clamps 2 when the enclosure 1 is violently shaken.
  • the present invention comprises a plurality of displacement limiting mechanisms 4.
  • Each of the plurality of displacement limiting mechanisms 4 is a device that prevents the first tray 11 and the second tray 12 from moving farther than a predetermined distance away from each other.
  • Each of the plurality of displacement limiting mechanisms 4 is preferably a mechanical fastener that prevents lateral displacement of the first tray 11 relative to the second tray 12.
  • the first tray 11 and the second tray 12 are positioned parallel to and offset from each other.
  • the plurality of cell clamps 2 is sandwiched between the first tray 11 and the second tray 12.
  • the plurality of displacement limiting mechanisms 4 is peripherally distributed within the enclosure 1.
  • the plurality of displacement limiting mechanisms 4 forms a support structure around the plurality of cell clamps 2 that maintains the first tray 11 and the second tray 12 in positions which prevent the inserted battery cells from becoming disconnected from the power management system 3.
  • the plurality of displacement limiting mechanisms 4 is detachably attached in between the first tray 11 and the second tray 12.
  • the plurality of displacement limiting mechanisms 4 facilitates replacing and repairing the inserted battery cells by enabling a user to easily remove the first tray 11 and access the inserted battery cells held by the plurality of cell clamps 2.
  • each of the plurality of displacement limiting mechanisms 4 comprises a first hole 41, a second hole 42, a bolt 43, and a nut 44.
  • the first hole 41 traverses through the first tray 11, and the second hole 42 traverses through the second tray 12. Accordingly, the first hole 41 and the second hole 42 form the connection points that the bolt 43 uses to become attached to the first tray 11 and the second tray 12.
  • the bolt 43 is positioned through the first hole 41 and the second hole 42.
  • a head 45 of the bolt 43 is positioned adjacent to the first tray 11, opposite to the plurality of cell clamps 2 so that the head 45 of the bolt 43 limits the distance that the bolt 43 is able to travel through the first tray 11.
  • the nut 44 is positioned adjacent to the second tray 12, opposite to the plurality of cell clamps 2, and the bolt 43 engages the nut 44. Consequently, the nut 44 is able to prevent the second tray 12 from moving farther than a desired distance away from the first tray 11.
  • the present invention is designed to function as a rechargeable battery system that can be charged by an external power supply, and then discharged into an external load.
  • the present invention comprises an external-device connection terminal 5.
  • the external-device connection terminal 5 is an electrical terminal that enables the present invention to become electrically connected to an external device.
  • the external-device connection terminal 5 is electrically connected to the power management system 3.
  • electrical power that is delivered to the external-device connection terminal 5 can be distributed to the plurality of cell clamps 2.
  • the plurality of cell clamps 2 is able to supply power to an external device through the power management system 3 and the external- device connection terminal 5.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A multicell rechargeable battery with a dynamic power management system has an enclosure, multiple cell clamps, and a power management system. The enclosure is the outer casing that holds the cell clamps in place. Each of the cell clamps is a device used to hold a single cell for the multicell battery. The enclosure has two trays that sandwich the cell clamps and keep the enclosed cells in place. Each cell clamp has a pair of endcaps and a pair of terminals. The terminals are positioned within the endcaps so that the enclosed cells can be placed into electrical communication with the power management system. The power management system dynamically modifies the circuit connection between each of the cell clamps to compensate for changes in the electrical state of the enclosed cells.

Description

Multicell Rechargeable Battery with a Dynamic Power Management
System
The current application is a Patent Cooperation Treaty (PCT) application and claims a priority to a U.S. provisional application serial number 62/325,604 filed on April 21, 2016.
FIELD OF THE INVENTION
The present invention relates generally to a multicell battery. More specifically, the present invention relates to a multicell battery that uses a reconfigurable circuit to modify the connections between each cell as required.
BACKGROUND OF THE INVENTION
Batteries in present day are usually assembled using strips of conductive material, which is permanently soldered or sonically welded across the contacts of the battery's cells. This is done to create various types of series or parallel circuits. Once the conductive material is soldered or sonically welded into position, it is extremely difficult, if not impossible, to remove. The result is a rigid block of cells that now behave chemically, thermally, and electrically as a single unit. If a cell dies, the cell breaks the circuit, and the entire series is useless, even if the other cells within the series are functional. If the cell overheats, the waste heat infects nearby cells and can cause thermal runaway. Traditional multicell batteries are charged as a single unit. Traditional multicell batteries are discharged as a single unit. The assembled battery is often shrink-wrapped. Cells are often glued together to increase rigidity. These are all the reasons why lithium- ion batteries overheat, malfunction, catch on fire, explode, and prematurely die.
Therefore, an objective of the present invention is to address these shortcomings by providing an apparatus and method for a more efficient, effective, and time convenient mechanical assembly of batteries. The present invention provides a tool-less assembly which does not require soldering workstations nor sonic welding workstations. These workstations can become extremely expensive, particularly when assembling large batteries for homes, cars, trucks, trains, planes, and boats. A deep-neck sonic welding work station is extremely expensive. A battery can be assembled in a fraction of the time through the use of the present invention. The present invention is also durable with vibration-resistant rigidity. The current state of the art uses glue to create rigidity;
vibration and torque cause the glue to fail. The present invention can withstand tremendous vibration and torque. The final assembly of the present invention can be easily disassembled allowing the present invention to be conveniently serviced and repaired. The current state of the art cannot be serviced or repaired. The present invention also allows individual cells to be replaced with ease.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the present invention.
FIG. 2 is a perspective view of the first tray for the present invention.
FIG. 3 is a perspective view of the second tray for the present invention.
FIG. 4 is a schematic view of the power management system used in the present invention where dotted lines indicate electronic connectivity and solid bold lines indicate electrical connectivity.
FIG. 5 is a schematic view of the connections between the power management system, the arbitrary clamp, and at least one other clamp used in the present invention, wherein dotted lines indicate electronic connectivity and solid bold lines indicate electrical connectivity.
FIG. 6 is a schematic view of the connections between the microcontroller and the plurality of sensor suites used in the present invention, wherein each of the plurality of sensor suites is operatively coupled to the corresponding clamp.
FIG. 7 is a schematic view of the connections between the microcontroller, the corresponding clamp, and each of the sensors from the sensor suite used in the present invention, wherein dotted lines indicate electronic connectivity and solid bold lines indicate electrical connectivity.
DETAIL DESCRIPTIONS OF THE INVENTION
All illustrations of the drawings are for the purpose of describing selected versions of the present invention and are not intended to limit the scope of the present invention.
As can be seen in FIG. 1 through FIG. 7, the preferred embodiment of the present invention, the multicell rechargeable battery with a dynamic power management system, is a device that enables the efficient power management of a plurality of rechargeable battery cells. The present invention is a device that uses a reconfigurable circuit system to enable granular control of a battery system with multiple cells. That is, the present invention is a system that monitors the electrical state and the environmental conditions around each individual cell of a multicell battery. This granular control is used to shut off the flow of current to and from battery cells that are damaged, at risk of overcharging and at risk of over-discharging. Additionally, the present invention is able to modify the circuit connection between each cell, such that the cells can be transitioned between parallel and series connections in response to instructions from the dynamic power management system.
As can be seen in FIG. 1 and FIG. 4, the present invention functions as a multicell battery with individual cells that can be easily replaced. To accomplish this, the present invention comprises an enclosure 1, a plurality of cell clamps 2, and a power
management system 3. The enclosure 1 functions as the housing that acts as the structural foundation for the other components of the present invention. The overall shape of the present invention is also defined by the enclosure. The enclosure 1 comprises a first tray 11 and a second tray 12. The first tray 11 and the second tray 12 are rigid panels that are used to hold the plurality of cell clamps 2 and the power management system 3 in desired positions and orientations. The plurality of cell clamps 2 is the collection of components that retain the multiple cells of the multicell battery in electrical communication with the power management system 3. To that end, each of the plurality of cell clamps 2 comprises a first endcap 21, a second endcap 22, a first terminal 23, and a second terminal 24. The plurality of cell clamps 2 is distributed throughout the enclosure 1 so that the present invention is able to hold a plurality of battery cells within the enclosure 1. Furthermore, the plurality of cell clamps 2 is positioned in between the first tray 11 and the second tray 12. Consequently, each clamp from the plurality of cell clamps 2 is used to sandwich an inserted battery cell between the first tray 11 and the second tray 12.
As can be seen in FIG. 1 FIG. through FIG. 5, in the preferred embodiment of the present invention, each clamp from the plurality of cell clamps 2 is used to hold a single inserted battery cell. The first endcap 21 functions as the first jaw for each clamp from the plurality of cell clamps 2. Additionally, the first endcap 21 is mounted onto the first tray 11. As a result, the first endcap 22 is able to retain a first end of the inserted battery cell in a fixed position. The first terminal 23 is mounted within the first endcap 21. Thus positioned, the first terminal 23 is able to maintain the first end of the inserted battery cell in electrical communication with the power management system 3. Likewise, the second endcap 22 is mounted onto the second tray 12. Accordingly, the second endcap 22 functions as the second jaw of the clamp from the plurality of cell clamps 2 that retains a second end of the inserted battery cell in a fixed position. The second terminal 24 is mounted within the second endcap 22 so that the second end of the inserted battery cell is maintained in electrical communication with the power management system 3. In the present invention, the first endcap 21 is concentrically aligned with the second endcap 22. Consequently, the first endcap 21 and the second endcap 22 are able to function as receptacles for the ends of an elongated battery cell. The first terminal 23 and the second terminal 24 are preferably spring contact terminals. Both the first terminal 23 and the second terminal 24 are able to extend and contract if the inserted battery cell is jostled between the first tray 11 and the second tray 12. This ability to extend and contract enables the first terminal 23 and the second terminal 24 to maintain a constant electrical connection with the positive and negative terminals of the inserted battery cell while the clamp from the plurality of cell clamps 2 is clamped around the inserted battery cell.
As can be seen in FIG. 1 and FIG. 5, the first terminal 23 and the second terminal 24 form the electrical connectors that enable the inserted battery cell to be electrically connected to the power management system 3. The power management system 3 is a collection of electrical components that monitor each clamp from the plurality of cell clamps 2 to assess the operational capacity of the inserted battery cell. To that end, the power management system 3 is integrated into the enclosure 1. Additionally, the first terminal 23 and the second terminal 24 for each of the plurality of cell clamps 2 is electrically connected to the power management system 3. As a result, the power management system 3 is able to govern the operation of each of the plurality of cell clamps 2.
As can be seen in FIG. 1 and FIG. 5, to govern the operation of the plurality of cell clamps 2, the power management system 3 comprises a first network of
reconfigurable multiway switches 31, a second network of reconfigurable multiway switches 32, and a microcontroller 33. The first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32 are circuits that can be dynamically modified to change the electrical connections between attached components. To make use of this functionality, the first terminal 23 of an arbitrary clamp 25 is electrically connected to the first terminal 23 of at least one other clamp 26 through the first network of reconfigurable multiway switches 31, wherein the arbitrary clamp 25 and the at least one other clamp 26 are from the plurality of cell clamps 2. Similarly, the second terminal 24 of the arbitrary clamp 25 is electrically connected to the second terminal 24 of the at least one other clamp 26 through the second network of
reconfigurable multiway switches 32. Thus connected, the present invention is able to reconfigure the electrical circuit that connects each of the plurality of cell clamps 2 to the power management system 3. For example, if an inserted battery cell in the arbitrary clamp 25 is defective, the first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32 can be directed to open the circuit between the defective inserted battery cell and the remaining inserted battery cells. The microcontroller is used to manage the computerized commands of the present invention. To accomplish this circuit reconfiguration, the first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32 are electronically connected to the microcontroller 33. Accordingly, the microcontroller 33 dictates how the first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32 form connections between the plurality of cell clamps 2.
As can be seen in FIG. 1 and FIG. 6, the present invention is able to accurately assess the operational capacity of the plurality of cell clamps 2 because the power management system 3 further comprises a plurality of sensor suites 34. Each of the plurality of sensor suites 34 is a collection of environmental and electrical sensors that are used to detect conditions that include, but are not limited to, voltage, current,
temperature, resistance, wattage, and impedance. In the present invention, each of the plurality of sensor suites 34 is operatively coupled to a corresponding clamp 27 from the plurality of cell clamps 2, wherein each of the plurality of sensor suites 34 is used to gather environmental data on the corresponding clamp 27. Consequently, each of the plurality of sensor suites 34 is able to collect data that determines if the power management system 3 should modify the connection or flow of current to the
corresponding clamp 27. This is possible because each of the plurality of sensor suites 34 is electronically connected to the microcontroller 33. As a result, the microcontroller 33 is able to interpret the data gathered by the plurality of sensor suites 34 and issue reconfiguration commands to the first network of reconfigurable multiway switches 31 and the second network of reconfigurable multiway switches 32. These reconfiguration commands should be able to mitigate any operational issues that arise from any individual battery cell.
As can be seen in FIG. 1 and FIG. 7, each of the plurality of sensor suites 34 uses various types of sensors to assess the operational capacity of the inserted battery cell and the corresponding clamp 27. To that end, each of the plurality of sensor suites 34 may comprise a voltmeter 341, an ammeter 342, an ohmmeter 343, a temperature sensor 344 or a combination thereof. The voltmeter 341 is electrically connected in parallel between the first terminal 23 and the second terminal 24 so that the voltmeter 341 is able to measure the voltage between the first terminal 23 and the second terminal 24. The ammeter 342 is electrically connected in series with the first terminal 23 and the second terminal 24. Thus connected, the ammeter 342 is able to determine the current flowing through the first terminal 23 and the second terminal 24. The ohmmeter 343 is electrically connected in series with the first terminal 23 and the second terminal 24. Accordingly, the ohmmeter 343 is able to determine the resistance of the first terminal 23 and the second terminal 24. Finally, the temperature sensor 344 is in thermal
communication with the first endcap 21 and the second endcap 22 so that the temperature sensor 344 is able to determine the temperature of the corresponding clamp 27.
As can be seen in FIG. 1 and FIG. 4, a primary purpose of the present invention is to provide a multicell battery with cells that are both easy to replace, yet remain in electrical communication with the plurality of cell clamps 2 when the enclosure 1 is violently shaken. To accomplish this, the present invention comprises a plurality of displacement limiting mechanisms 4. Each of the plurality of displacement limiting mechanisms 4 is a device that prevents the first tray 11 and the second tray 12 from moving farther than a predetermined distance away from each other. Each of the plurality of displacement limiting mechanisms 4 is preferably a mechanical fastener that prevents lateral displacement of the first tray 11 relative to the second tray 12. In the preferred embodiment of the present invention, the first tray 11 and the second tray 12 are positioned parallel to and offset from each other. Consequently, the plurality of cell clamps 2 is sandwiched between the first tray 11 and the second tray 12. The plurality of displacement limiting mechanisms 4 is peripherally distributed within the enclosure 1. As a result, the plurality of displacement limiting mechanisms 4 forms a support structure around the plurality of cell clamps 2 that maintains the first tray 11 and the second tray 12 in positions which prevent the inserted battery cells from becoming disconnected from the power management system 3. The plurality of displacement limiting mechanisms 4 is detachably attached in between the first tray 11 and the second tray 12. Thus positioned, the plurality of displacement limiting mechanisms 4 facilitates replacing and repairing the inserted battery cells by enabling a user to easily remove the first tray 11 and access the inserted battery cells held by the plurality of cell clamps 2.
As can be seen in FIG. 1, to expound on the descriptions of the plurality of displacement limiting mechanisms 4, each of the plurality of displacement limiting mechanisms 4 comprises a first hole 41, a second hole 42, a bolt 43, and a nut 44. The first hole 41 traverses through the first tray 11, and the second hole 42 traverses through the second tray 12. Accordingly, the first hole 41 and the second hole 42 form the connection points that the bolt 43 uses to become attached to the first tray 11 and the second tray 12. To accomplish this, the bolt 43 is positioned through the first hole 41 and the second hole 42. A head 45 of the bolt 43 is positioned adjacent to the first tray 11, opposite to the plurality of cell clamps 2 so that the head 45 of the bolt 43 limits the distance that the bolt 43 is able to travel through the first tray 11. The nut 44 is positioned adjacent to the second tray 12, opposite to the plurality of cell clamps 2, and the bolt 43 engages the nut 44. Consequently, the nut 44 is able to prevent the second tray 12 from moving farther than a desired distance away from the first tray 11.
As can be seen in FIG. 1 and FIG. 4, the present invention is designed to function as a rechargeable battery system that can be charged by an external power supply, and then discharged into an external load. To accomplish this, the present invention comprises an external-device connection terminal 5. The external-device connection terminal 5 is an electrical terminal that enables the present invention to become electrically connected to an external device. The external-device connection terminal 5 is electrically connected to the power management system 3. As a result, electrical power that is delivered to the external-device connection terminal 5 can be distributed to the plurality of cell clamps 2. Additionally, the plurality of cell clamps 2 is able to supply power to an external device through the power management system 3 and the external- device connection terminal 5.
Although the invention has been explained in relation to its preferred
embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.

Claims

What is claimed is:
1. A multicell rechargeable battery with a dynamic power management system
comprises:
an enclosure;
a plurality of cell clamps;
a power management system;
the enclosure comprises a first tray and a second tray;
each of the plurality of cell clamps comprises a first endcap, a second endcap, a first terminal, and a second terminal;
the plurality of cell clamps being distributed throughout the enclosure; the plurality of cell clamps being positioned in between the first tray and the second tray;
the first endcap being mounted onto the first tray;
the first terminal being mounted within the first endcap;
the second endcap being mounted onto the second tray;
the second terminal being mounted within the second endcap; the first endcap being concentrically aligned with the second endcap; the power management system being integrated into the enclosure; and the first terminal and the second terminal for each of the plurality of cell clamps being electrically connected to the power management system.
2. The multicell rechargeable battery with a dynamic power management system as claimed in claim 1 comprises:
the power management system comprises a first network of reconfigurable multiway switches, a second network of reconfigurable multiway switches, and a microcontroller;
the first terminal of an arbitrary clamp being electrically connected to the first terminal of at least one other clamp through the first network of
reconfigurable multiway switches, wherein the arbitrary clamp and the at least one other clamp are from the plurality of cell clamps; the second terminal of the arbitrary clamp being electrically connected to the second terminal of the at least one other clamp through the second network of reconfigurable multiway switches; and
the first network of reconfigurable multiway switches and the second network of reconfigurable multiway switches being electronically connected to the microcontroller.
3. The multicell rechargeable battery with a dynamic power management system as claimed in claim 1 comprises:
the power management system further comprises a plurality of sensor suites and a microcontroller;
each of the plurality of sensor suites being operatively coupled to a corresponding clamp from the plurality of cell clamps, wherein each of the plurality of sensor suites is used to gather environmental data on the
corresponding clamp; and
each of the plurality of sensor suites being electronically connected to the microcontroller.
4. The multicell rechargeable battery with a dynamic power management system as claimed in claim 3 comprises:
each of the plurality of sensor suites comprises a voltmeter; and the voltmeter being electrically connected in parallel between the first terminal and the second terminal.
5. The multicell rechargeable battery with a dynamic power management system as claimed in claim 3 comprises:
each of the plurality of sensor suites comprises an ammeter; and the ammeter being electrically connected in series with the first terminal and the second terminal.
The multicell rechargeable battery with a dynamic power management system as claimed in claim 3 comprises:
each of the plurality of sensor suites comprises an ohmmeter; and the ohmmeter being electrically connected in series with the first terminal and the second terminal.
The multicell rechargeable battery with a dynamic power management system as claimed in claim 3 comprises:
each of the plurality of sensor suites comprises a temperature sensor; and the temperature sensor being in thermal communication with the first endcap and the second endcap.
The multicell rechargeable battery with a dynamic power management system as claimed in claim 1 comprises:
a plurality of displacement limiting mechanisms;
the first tray and the second tray being positioned parallel to and offset from each other;
the plurality of displacement limiting mechanisms being peripherally distributed within the enclosure; and
the plurality of displacement limiting mechanisms being detachably attached in between the first tray and the second tray.
The multicell rechargeable battery with a dynamic power management system as claimed in claim 2 comprises:
each of the plurality of displacement limiting mechanisms comprises a first hole, a second hole, a bolt, and a nut;
the first hole traversing through the first tray;
the second hole traversing through the second tray;
the bolt being positioned through the first hole and the second hole;
a head of the bolt being positioned adjacent to the first tray, opposite to the plurality of cell clamps; the nut being positioned adjacent to the second tray, opposite to the plurality of cell clamps; and
the bolt engaging the nut.
10. The multicell rechargeable battery with a dynamic power management system as claimed in claim 1 , wherein the first terminal and the second terminal are spring contact terminals.
11. The multicell rechargeable battery with a dynamic power management system as claimed in claim 1 comprises:
an external-device connection terminal; and
the external-device connection terminal being electrically connected to the power management system.
12. A multicell rechargeable battery with a dynamic power management system
comprises:
an enclosure;
a plurality of cell clamps;
a power management system;
the enclosure comprises a first tray and a second tray;
each of the plurality of cell clamps comprises a first endcap, a second endcap, a first terminal, and a second terminal;
the power management system comprises a first network of reconfigurable multiway switches, a second network of reconfigurable multiway switches, and a microcontroller, a plurality of sensor suites and a microcontroller;
the plurality of cell clamps being distributed throughout the enclosure; the plurality of cell clamps being positioned in between the first tray and the second tray;
the first endcap being mounted onto the first tray;
the first terminal being mounted within the first endcap;
the second endcap being mounted onto the second tray; the second terminal being mounted within the second endcap;
the first endcap being concentrically aligned with the second endcap; the power management system being integrated into the enclosure;
the first terminal and the second terminal for each of the plurality of cell clamps being electrically connected to the power management system;
the first terminal of an arbitrary clamp being electrically connected to the first terminal of at least one other clamp through the first network of
reconfigurable multiway switches, wherein the arbitrary clamp and the at least one other clamp are from the plurality of cell clamps;
the second terminal of the arbitrary clamp being electrically connected to the second terminal of the at least one other clamp through the second network of reconfigurable multiway switches;
the first network of reconfigurable multiway switches and the second network of reconfigurable multiway switches being electronically connected to the microcontroller;
each of the plurality of sensor suites being operatively coupled to a corresponding clamp from the plurality of cell clamps, wherein each of the plurality of sensor suites is used to gather environmental data on the
corresponding clamp; and
each of the plurality of sensor suites being electronically connected to the microcontroller.
13. The multicell rechargeable battery with a dynamic power management system as claimed in claim 12 comprises:
each of the plurality of sensor suites comprises a voltmeter; and the voltmeter being electrically connected in parallel between the first terminal and the second terminal.
14. The multicell rechargeable battery with a dynamic power management system as claimed in claim 12 comprises:
each of the plurality of sensor suites comprises an ammeter; and the ammeter being electrically connected in series with the first terminal and the second terminal.
15. The multicell rechargeable battery with a dynamic power management system as claimed in claim 12 comprises:
each of the plurality of sensor suites comprises an ohmmeter; and the ohmmeter being electrically connected in series with the first terminal and the second terminal.
16. The multicell rechargeable battery with a dynamic power management system as claimed in claim 12 comprises:
each of the plurality of sensor suites comprises a temperature sensor; and the temperature sensor being in thermal communication with the first endcap and the second endcap.
17. The multicell rechargeable battery with a dynamic power management system as claimed in claim 12 comprises:
a plurality of displacement limiting mechanisms;
the first tray and the second tray being positioned parallel to and offset from each other;
the plurality of displacement limiting mechanisms being peripherally distributed within the enclosure; and
the plurality of displacement limiting mechanisms being detachably attached in between the first tray and the second tray.
18. The multicell rechargeable battery with a dynamic power management system as claimed in claim 17 comprises:
each of the plurality of displacement limiting mechanisms comprises a first hole, a second hole, a bolt, and a nut;
the first hole traversing through the first tray;
the second hole traversing through the second tray; the bolt being positioned through the first hole and the second hole;
a head of the bolt being positioned adjacent to the first tray, opposite to the plurality of cell clamps;
the nut being positioned adjacent to the second tray, opposite to the plurality of cell clamps; and
the bolt engaging the nut.
19. The multicell rechargeable battery with a dynamic power management system as claimed in claim 12, wherein the first terminal and the second terminal are spring contact terminals.
20. The multicell rechargeable battery with a dynamic power management system as claimed in claim 12 comprises:
an external-device connection terminal; and
the external-device connection terminal being electrically connected to the power management system.
PCT/IB2017/052377 2016-04-21 2017-04-25 Multicell rechargeable battery with a dynamic power management system WO2017183012A1 (en)

Priority Applications (3)

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GB1817098.5A GB2564364A (en) 2016-04-21 2017-04-25 Multicell rechargeable battery with a dynamic power management system
US15/589,791 US20190036175A1 (en) 2016-04-21 2017-04-25 Multicell Rechargeable Battery with a Dynamic Power Management System

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MX2018012846A (en) 2019-07-04

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