WO2023211381A1 - Chargeur pour charger de multiples blocs-batteries et ses procédés de fonctionnement - Google Patents

Chargeur pour charger de multiples blocs-batteries et ses procédés de fonctionnement Download PDF

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Publication number
WO2023211381A1
WO2023211381A1 PCT/SG2023/050285 SG2023050285W WO2023211381A1 WO 2023211381 A1 WO2023211381 A1 WO 2023211381A1 SG 2023050285 W SG2023050285 W SG 2023050285W WO 2023211381 A1 WO2023211381 A1 WO 2023211381A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery packs
battery
charging
charger
controller
Prior art date
Application number
PCT/SG2023/050285
Other languages
English (en)
Inventor
Shatruddha Singh Kushwaha
Vishal TYAGI
Chetan Kumar Maini
Original Assignee
Sun Mobility Pte 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
Application filed by Sun Mobility Pte Ltd filed Critical Sun Mobility Pte Ltd
Publication of WO2023211381A1 publication Critical patent/WO2023211381A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/80—Exchanging energy storage elements, e.g. removable batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/53—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
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • H02J7/0049—Detection of fully charged condition
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage

Definitions

  • Embodiments disclosed herein relate to battery charging systems and more particularly to a charger for charging multiple battery packs simultaneously in the battery swapping station and methods of operating the charger.
  • a battery charging and swapping station can store multiple battery packs, wherein each of the battery packs can be stored in its individual battery docks.
  • Each battery dock of the station needs a dedicated charger for charging the respective battery packs, and the charger stays unutilized (if the battery in the dock is fully charged), until the battery from the dock is replaced with another depleted battery pack that needs to be charged.
  • An existing solution to charge multiple battery packs simultaneously is by connecting the modules of battery packs in parallel for simultaneous charging and discharging. If the modules are at different voltages, it can get dangerous to charge the batteries simultaneously as a battery pack at a higher voltage can start charging a battery pack (present in the battery charging and swapping station) at a lower voltage and high current flow.
  • a current solution discloses a system for charging a series battery, wherein the series battery is comprised of a set of banks that are connected in series so that the same charging current passes through each bank. During the charging process, the system measures a voltage across each bank in the set of banks. The system then compares the measured voltage with a target voltage for each bank and adjusts the charging process based on the results of the comparisons between the measured voltage and the target voltage.
  • the prior art system only compares the voltage levels of various battery packs and allows for charging of batteries that are only connected in series.
  • the principal object of embodiments disclosed herein is to disclose a charger in a battery charging and swapping station for charging multiple battery packs (present in the battery charging and swapping station), and methods for operating the charger.
  • FIG. 1 depicts a battery and charging swapping station comprising a charger, according to embodiments as disclosed herein;
  • FIG. 2 is an example flowchart depicting the process of charging a plurality of battery packs in a battery charging and swapping station by a single charger, according to embodiments as disclosed herein.
  • the embodiments herein disclose a charger in a battery charging and swapping station for charging multiple battery packs (present in the battery charging and swapping station), and methods for operating the charger.
  • the voltages of the battery packs are checked and sorted into an ordered list, based on the voltage of the individual battery packs.
  • the battery charging and swapping station can check the difference in voltage levels of consecutive battery packs in the ordered list. If the first voltage difference is more than a set value, the battery charging and swapping station will charge the first battery pack.
  • the charger present in the battery charging and swapping station charges the first battery pack till the difference in voltage values between the first and the next battery is less than the predefined value. The first battery pack, on reaching the pre-defined voltage value, the next battery pack starts charging.
  • the battery packs can be charged simultaneously and can be charged till the voltage value between the second battery pack and the third battery pack is less than a pre-defined value.
  • the second battery pack on reaching the predefined voltage, and the charging for the third battery pack is started by the charger.
  • the process of monitoring the voltage levels and charging of all the battery packs continues for a complete list of battery packs sorted in the battery charging and swapping station.
  • FIG. 1 depicts a battery and charging swapping station comprising a charger.
  • the charging and swapping station 100 comprises a controller 101 connected to a plurality of battery docks 102, and a charger 103. Battery packs can be placed in the plurality of docks
  • the battery pack can be a smart battery pack with inbuilt electronics and sensors for checking the parameters associated with the battery pack for connecting, exchanging information/commands, and for its own safety with the vehicle and/or battery charging station.
  • the charger 103 can be connected to the plurality of battery docks 102 and can charge the battery packs present in the respective battery docks 102 using power from one or more power sources. During the process of charging, the charger 103 can deliver constant power or constant current or voltage to the battery packs. In an embodiment herein, the charger
  • the charging and swapping station 100 can be connected to one or more power sources, such as, but not limited to, mains power, one or more green sources of energy (such as, but not limited to, solar energy, wind power, and so on).
  • power sources such as, but not limited to, mains power, one or more green sources of energy (such as, but not limited to, solar energy, wind power, and so on).
  • controller 101 may refer to, for example, hardware including logic circuits; a hardware/software combination such as a processor executing software; or a combination thereof.
  • the processing circuitry more specifically may include but is not limited to, a central processing unit (CPU), an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a System-on-Chip (SoC), a programmable logic unit, a microprocessor, application-specific integrated circuit (ASIC), etc.
  • CPU central processing unit
  • ALU arithmetic logic unit
  • FPGA field programmable gate array
  • SoC System-on-Chip
  • ASIC application-specific integrated circuit
  • the controller 101 may include at least one of, a single processor, a plurality of processors, multiple homogeneous or heterogeneous cores, multiple Central Processing Units (CPUs) of different kinds, microcontrollers, special media, and other accelerators.
  • a single processor a plurality of processors, multiple homogeneous or heterogeneous cores, multiple Central Processing Units (CPUs) of different kinds, microcontrollers, special media, and other accelerators.
  • CPUs Central Processing Units
  • the controller 101 can identify the type of battery packs present in docks 102.
  • the type of battery packs can be identified and categorized based on the current and/or voltage level. Battery packs at different incoming voltages can be considered to be of different types. If the battery packs have the same voltage level, the controller 101 can determine the battery packs to be of the same type. If the battery packs do not have the same voltage level, the controller 101 can determine the battery packs to be of different types. If the battery packs coming to the battery charging & swapping station are at different voltage levels, then only one battery pack will start charging at a time.
  • Embodiments herein have been explained by considering that two battery packs have been inserted into the respective battery docks 102, as an example. However, it may be obvious to a person of ordinary skill in the art that embodiments herein may be applicable for any number of battery packs being charged at the respective battery docks 102.
  • the controller 101 can provide instructions to the charger 103 to provide power for charging to both BP1 and BP2.
  • the controller 101 can receive a first Voltage Request (SVR) from BP1 and/or BP2.
  • the first SVR can be a voltage request from either one of BP1 or BP2, as both BP1 and BP2 are at the same voltage level.
  • the controller 101 can receive a first Current Request (SCR) from BP1 and/or BP2.
  • the first SCR can be the sum of the current requests from BP1 and BP2.
  • the controller 101 can provide instructions to the charger 103, according to the requested first SVR and first SCR. Both BP1 and BP2 are being charged accordingly (at constant power, constant current or constant voltage); i.e., BP1 and BP2 are in Constant Current (CC) mode. On determining that the BP1 and BP2 are fully charged (i.e., BP1 and BP2 enter Charge End (CE) mode), the controller 101 can provide instructions to the charger 103 to stop charging BP1 and BP2.
  • CC Constant Current
  • CE Charge End
  • the controller 101 can provide instructions to the charger 103 to provide power only to BP1 and not to BP2.
  • the controller 101 can receive a second SVR and a second SCR from BP1 (before a SVR and/or SCR from the other battery packs).
  • the second SVR can be the voltage request received from BP1.
  • the second SCR can be the current request received from BP1.
  • the controller 101 can provide instructions to the charger 103 according to the requested second SVR and the second SCR.
  • BP1 is charged accordingly charged; i.e., BP1 is in CC mode.
  • BP2 is not charged; i.e., BP2 is in CH mode.
  • the controller 101 can continuously monitor the voltage levels of BP1, as it is being charged.
  • the controller 101 can check if the voltage level of BP1 is greater than or equal to the sum of voltage level of BP2 and a cut-off voltage difference. If the voltage level of BP1 is greater than or equal to the sum of the voltage level of BP2 and a cut-off voltage difference, the controller 101 can provide instructions to the charger 103 to stop charging BP1; i.e., both BP1 and BP2 are not charging, and both are in CH mode. The controller 101 can further provide instructions to the charger 103 to provide power for charging to both BP1 and BP2. The controller 101 can receive the SVR from BP1 and/or BP2.
  • the SVR can be a voltage request from either one of BP1 or BP2, as both BP1 and BP2 are at the same voltage level.
  • the controller 101 can receive the SCR from BP1 and/or BP2.
  • the SCR can be the sum of the current requests from BP1 and BP2.
  • the controller 101 can provide instructions to the charger 103 according to the requested SVR and SCR. Both BP1 and BP2 that are being charged are accordingly charged; i.e., BP1 and BP2 are in CC mode. On determining that the BP1 and BP2 are fully charged (i.e., BP1 and BP2 enter Charge End (CE) mode), the controller 101 can provide instructions to the charger 103 to stop charging BP1 and BP2.
  • CE Charge End
  • FIG. 2 is an example flowchart depicting the process of charging a plurality of battery packs in a battery charging and swapping station by a single charger.
  • the controller 201 determines the voltage levels of the battery packs (BP1, BP2) present in the battery docks 102 for charging.
  • the controller 201 determines if the battery packs (BP1, BP2) are of the same type based on the determined voltage levels. If the battery packs (BP1, BP2) have the same voltage level, the controller 101 determines the battery packs (BP1, BP2) to be of the same type. If the battery packs (BP1, BP2) do not have the same voltage level, the controller 101 determines the battery packs to be of different types.
  • the charger 103 charges both BP1 and BP2, based on instructions received from the controller 101.
  • the charger 103 charges BP1 and BP2 based on the first SVR and SCR (at a constant power, a constant current, or a constant voltage); i.e., BP1 and BP2 are in Constant Current (CC) mode.
  • CC Constant Current
  • the charger 103 stops charging BP1 and BP2 (step 205), based on instructions received from the controller 101.
  • the charger 103 provides power only to BP1 and not to BP2, based on instructions provided by the controller 101.
  • the charger 103 charges BP1 based on the second SVR and the second SCR (at a constant power, a constant current, or a constant voltage); i.e., BP1 is in CC mode and BP2 is in CH mode.
  • the charger 103 stops charging BP1, based on instructions provided by the controller 101; i.e., both BP1 and BP2 are not charging, and both are in CH mode.
  • step 203 The method further continues from step 203 onwards.
  • the various actions in method 200 may be performed in the order presented, in a different order, or simultaneously. Further, in some embodiments, some actions listed in FIG. 2 may be omitted.
  • embodiments herein can deliver a constant power or constant current or voltage to the battery packs.
  • a single battery pack present in the battery charging and swapping station can be charged at higher power.
  • the battery charging and swapping station can distribute the power amongst the battery packs or increased if more power is available.
  • embodiments herein ensure that the current gets divided between the battery packs and the current does not flow from one battery pack to another battery pack.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical 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)

Abstract

Des modes de réalisation présentement divulgués concernent des procédés et des systèmes pour charger des blocs-batteries, et plus particulièrement pour charger simultanément de multiples blocs-batteries qui sont présents dans la station de permutation de batteries. Des modes de réalisation présentement divulgués concernent des procédés et des systèmes pour charger de multiples blocs-batteries dans la station de permutation de batterie en vérifiant les niveaux de tension de deux blocs-batteries consécutifs présents dans la station et en la chargeant sur la base des valeurs de tension prédéfinies définies dans le dispositif de commande de la station.
PCT/SG2023/050285 2022-04-25 2023-04-25 Chargeur pour charger de multiples blocs-batteries et ses procédés de fonctionnement WO2023211381A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202241024253 2022-04-25
IN202241024253 2022-04-25

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WO2023211381A1 true WO2023211381A1 (fr) 2023-11-02

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150194707A1 (en) * 2014-01-06 2015-07-09 Samsung Sdi Co., Ltd. Battery pack, energy storage system including the battery pack, and method of operating the battery pack
DE102017123184A1 (de) * 2017-10-05 2019-04-11 Lisa Dräxlmaier GmbH Vorrichtung und Verfahren zum Laden eines elektrischen Energiespeichersystems
CN112332486A (zh) * 2020-11-04 2021-02-05 深圳源创智能照明有限公司 一种电池组主动均衡充电系统及其控制方法
US20210226267A1 (en) * 2018-10-26 2021-07-22 Pramod Suresh Magadi BATTERY CHARGING AND DISCHARGING OF MULTIPLE PACKS AT DIFFERENT STATES OF CHARGE (SOCs)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150194707A1 (en) * 2014-01-06 2015-07-09 Samsung Sdi Co., Ltd. Battery pack, energy storage system including the battery pack, and method of operating the battery pack
DE102017123184A1 (de) * 2017-10-05 2019-04-11 Lisa Dräxlmaier GmbH Vorrichtung und Verfahren zum Laden eines elektrischen Energiespeichersystems
US20210226267A1 (en) * 2018-10-26 2021-07-22 Pramod Suresh Magadi BATTERY CHARGING AND DISCHARGING OF MULTIPLE PACKS AT DIFFERENT STATES OF CHARGE (SOCs)
CN112332486A (zh) * 2020-11-04 2021-02-05 深圳源创智能照明有限公司 一种电池组主动均衡充电系统及其控制方法

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