NZ756893A - Battery system - Google Patents

Battery system

Info

Publication number
NZ756893A
NZ756893A NZ756893A NZ75689318A NZ756893A NZ 756893 A NZ756893 A NZ 756893A NZ 756893 A NZ756893 A NZ 756893A NZ 75689318 A NZ75689318 A NZ 75689318A NZ 756893 A NZ756893 A NZ 756893A
Authority
NZ
New Zealand
Prior art keywords
battery cell
battery
controllers
cell units
cell unit
Prior art date
Application number
NZ756893A
Other versions
NZ756893B2 (en
Inventor
Daniel Crowley
Jan Muenzel
Zhe Zhang
Daniel Follent
Original Assignee
Relectrify Holdings Pty Ltd
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
Priority claimed from AU2017900386A external-priority patent/AU2017900386A0/en
Application filed by Relectrify Holdings Pty Ltd filed Critical Relectrify Holdings Pty Ltd
Publication of NZ756893A publication Critical patent/NZ756893A/en
Publication of NZ756893B2 publication Critical patent/NZ756893B2/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
    • H01M10/4285—Testing 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
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
    • H02J7/575—Parallel/serial switching of connection of batteries to charge or load circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • H02J7/82—Control of state of charge [SOC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/12—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
    • H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
    • H03K17/6872—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor using complementary field-effect transistors
    • 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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
    • H02J7/52—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially for charge balancing, e.g. equalisation of charge between batteries
    • H02J7/56—Active balancing, e.g. using capacitor-based, inductor-based or DC-DC converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Landscapes

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

Abstract

A battery system including a plurality of battery cell units connected in series, two or more switching assemblies, three or more controllers comprising a central controller, and two or more cell unit controllers each configured to control one of the two or more switching assemblies, and a communication line that is shared between the three or more controllers, wherein the central controller includes a microcontroller configured to determine a set of control parameters to control the battery cell units based on input parameters retrieved from the battery cell units, the input parameters comprising at least one of the present voltage, maximum charged voltage, and minimum discharged voltage for each battery cell unit, two or more of the controllers are configured to control switching of the switching assemblies based on the set of control parameters to selectively disconnect any one of the battery cell units from being connected with any other battery cell units from the plurality of battery cell units, and electrically connect in series any one of the battery cell units with any other battery cell unit from the plurality of battery cell units, so as to provide a system output having a controllable voltage profile, the two or more cell unit controllers being configured for synchronised operation, wherein the central controller is configured to generate a synchronisation signal for time synchronisation of the two or more cell unit controllers, and to transmit the synchronisation signal to two or more of the cell unit controllers configured to control switching of the switching assemblies via the communication line, and wherein the communication line includes a synchronisation line configured to communicate the synchronisation signal for time synchronisation between the three or more controllers to thereby synchronise the central controller and two or more cell unit controllers.

Claims (14)

The claims defining the invention are as follows:
1. A battery system including a plurality of battery cell units connected in series, two or more switching assemblies, three or more controllers comprising a central controller, and two or more cell unit controllers each configured to control one of the two or more switching assemblies, and a communication line that is shared between the three or more controllers, wherein the central controller includes a microcontroller configured to determine a set of control parameters to control the battery cell units based on input parameters retrieved from the battery cell units, the input parameters comprising at least one of the present voltage, maximum charged voltage, and minimum discharged voltage for each battery cell unit, two or more of the controllers are configured to control switching of the switching assemblies based on the set of control parameters to selectively disconnect any one of the battery cell units from being connected with any other battery cell units from the plurality of battery cell units, and electrically connect in series any one of the battery cell units with any other battery cell unit from the plurality of battery cell units, so as to provide a system output having a controllable voltage profile, the two or more cell unit controllers being configured for synchronised operation, wherein the central controller is configured to generate a synchronisation signal for time synchronisation of the two or more cell unit controllers, and to transmit the synchronisation signal to two or more of the cell unit controllers configured to control switching of the switching assemblies via the communication line, and wherein the communication line includes a synchronisation line configured to communicate the synchronisation signal for time synchronisation between the three or more controllers to thereby synchronise the central controller and two or more cell unit controllers.
2. A battery system of claim 1, wherein the two or more cell unit controllers configured to control switching of the switching assemblies are configured to selectively allow operation in a first state in which a first battery cell unit and a second battery cell unit are electrically connected in series and a third battery cell unit is disconnected, operation in a second state in which the first battery cell unit and the third battery cell unit are electrically connected in series and the second battery cell unit is disconnected, and operation in a third state in which the second battery cell unit and the third battery cell unit are electrically connected in series and the first battery cell is disconnected.
3. The battery system of claim 1 or claim 2, wherein the communication line further includes at least one of a data line configured for sending data, and a clock line configured for sending a time synchronisation signal.
4. The battery system of any one or claims 1 to 3, wherein the synchronisation signal for time synchronisation signal includes a single time signal.
5. The battery system according to claim 1, wherein each of the battery cell units comprises a cell microcontroller that is one of the two or more controllers and wherein the cell microcontrollers are configured to communicate with the central controller via the communication line.
6. The battery system according to any one of the preceding claims, wherein two or more battery cell units are controlled by the two or more controllers to control switching of the switching assemblies such that one of the two or more controllers is a shared controller that is configured to control the two or more battery cell units.
7. The battery system according to any one of the preceding claims, further including an output module configured to control the system output, wherein: the output module has one or more output switches for selectively connecting or disconnecting the connected battery cell units to the system output; and/or an AC/DC converter configured to convert a direct current signal into an alternating current.
8. The battery system according to any one of the precedi ng claims, wherein the plurality of battery cell units includes at least two battery cell units having a difference in charge storage capacity of substantially 5% or more.
9. The battery system according to any one of the precedi ng claims, wherein one of the control parameters includes a duty cycle for each of the battery cell units, and wherein the duty cycle determines a percentage of time for maintaining an electrical connection for the respective battery cell unit when it is electrically connected in series with one or more other battery cell units in the plurality of battery cell units; and/or one of the control parameters includes a time shift for each of the battery cell units, and wherein the time shift determines a time for electrically connecting the respective battery cell unit in series with one or more other battery cell units in the plurality of battery cell units.
10. The battery system according to any one of the preceding claims, wherein at least one switching assembly includes gate drive electronics configured to receive control signals from at least one of the controllers, the gate drive electronics having one or more isolation elements for isolating the at least one switching assembly from the controllers, one or more switching elements configured to conduct a current flowing in a direct electrical path between battery cell units connected in series; and wherein the number of isolation elements is fewer than the number of switching elements.
11. The battery system according to any one of the preceding claims, wherein a first switching assembly is configured to control one or more corresponding battery cell units, the first switching assembly including gate drive electronics configured to receive control signals from at least one of the controllers, wherein the gate drive electronics are at least partially powered by the one or more corresponding battery cell units.
12. The battery system according to any one of the preceding claims, wherein one or more of the switching assemblies each includes a maximum of two switching elements.
13. The battery system according to any one of the preceding claims, further including an H-bridge circuit configured to convert a rectified sine wave output signal to a full sine wave output signal.
14. A battery pack system including two or more battery systems according to any one or the preceding claims, wherein the two or more battery systems are electrically connected in parallel, the battery pack system being configured to regulate the system output of each of the battery systems.
NZ756893A 2018-02-07 Battery system NZ756893B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2017900386A AU2017900386A0 (en) 2017-02-08 Battery System
PCT/AU2018/050087 WO2018145150A1 (en) 2017-02-08 2018-02-07 Battery system

Publications (2)

Publication Number Publication Date
NZ756893A true NZ756893A (en) 2025-07-25
NZ756893B2 NZ756893B2 (en) 2025-10-29

Family

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Also Published As

Publication number Publication date
CN110521078A (en) 2019-11-29
ZA201905936B (en) 2021-01-27
JP2020507303A (en) 2020-03-05
KR102336970B1 (en) 2021-12-08
AU2018218181B2 (en) 2019-10-24
CN110521078B (en) 2023-09-22
WO2018145150A1 (en) 2018-08-16
JP6989620B2 (en) 2022-01-05
EP3580828A1 (en) 2019-12-18
EP3580828A4 (en) 2020-12-09
US10910606B2 (en) 2021-02-02
US20190363311A1 (en) 2019-11-28
KR20190116329A (en) 2019-10-14
AU2018218181A1 (en) 2019-09-19

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