WO2025129209A1 - Batterie au lithium pour démarrer un moteur à combustion interne - Google Patents

Batterie au lithium pour démarrer un moteur à combustion interne Download PDF

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Publication number
WO2025129209A1
WO2025129209A1 PCT/VN2024/000005 VN2024000005W WO2025129209A1 WO 2025129209 A1 WO2025129209 A1 WO 2025129209A1 VN 2024000005 W VN2024000005 W VN 2024000005W WO 2025129209 A1 WO2025129209 A1 WO 2025129209A1
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WO
WIPO (PCT)
Prior art keywords
charging
battery
bms
port
voltage
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Pending
Application number
PCT/VN2024/000005
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English (en)
Inventor
Hung DANG DINH
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Individual
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Individual
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Publication of WO2025129209A1 publication Critical patent/WO2025129209A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H02J1/10—Parallel operation of DC sources
    • H02J1/108—Parallel operation of DC sources having arrangements for blocking reverse current flow, e.g. using diodes
    • 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
    • H02J7/14—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1438—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle in combination with power supplies for loads other than batteries

Definitions

  • Lithium rechargeable batteries are being applied in many fields to store electricity and provide power for high-power devices. Due to its high - power density, high durability and stability, it is gradually replacing lead-acid batteries and other traditional batteries.
  • Lithium batteries cannot replace lead-acid batteries.
  • Some manufacturers have already launched market starter Lithium batteries types in the market, but only in small quantities and the products must sacrifice some other necessary technical characteristics to be able to be used for this purpose.
  • BMS Battery Management System
  • the Integrated circuits measure and evaluate the voltage levels of upper limit of overcharge status and the lower limit of overdischarge status.
  • the IC circuit also measure and evaluate the discharge current compared to the maximum discharge current limit. hi addition, some IC circuits can measure other factors that require protection, such as overheating and overcharging current.
  • the part switch charge and discharge paths to use MOSFET high-power electronic component according to the commands are sent from the above measurement IC circuits.
  • the charging MOSFET When the charging exceed the threshold or limit overcurrent, the charging MOSFET will be cut off and will not allow additional charging to the battery.
  • the discharging exceed the threshold or limit overcurrent or the BMS’s temperature is too high, the discharge MOSFET will be cut off and the battery cannot continue to discharge.
  • BMS has common charge and discharge 1- port:
  • FIG.l depicts a lithium battery system with a common 1-port charge-discharge BMS using N-MOSFET type to switch a negative path.
  • the battery element block (1) has an anode connected directly to the positive port (8) of the battery pack, cathode connected to the discharging MOSFET (2), connected in series with the charging MOSFET (3) and continues to common negative port (5) of the battery pack.
  • the charging generator (6) and the electrical loads (7) are connected in parallel and connected in parallel to the battery pack. When the generator is not running or running at a slower speed, the output voltage is lower than the voltage of the battery pack, so the current will flow from the anode of the battery pack to the load and return to the cathode of the battery pack.
  • the current continue from the cathode through the charging MOSFET (3) and discharging MOSFET (2) to the cathode of the battery block (1).
  • the voltage of the charging generator (6) is higher than the voltage of the battery block (1), the current from the anode of the charging generator will partly pass through the load (7), and a portion will enter the positive port (8) of the battery pack charge the battery -> and go out to the cathode of the battery block and sequentially passing through the discharging MOSFET (2) and charging MOSFET (3) of the BMS (4), Then go out the common negative port (5) of the battery pack and return to the cathode of the charging generator.
  • BMS (4) When the battery is over-voltage, that is, when the voltage of any battery element exceeds its maximum threshold (3.65V with 3.2V LFP battery element type), BMS (4) will turn off the charging MOSFET (3) and then the discharging path is also disconnected. To restore discharge capacity, the power supply (6) must be isolated from the battery pack.
  • the BSM type using P-mofet also works similarly, but the MOSFET will be controlled to turn off the positive pass of the battery block.
  • FIG. 1 The diagram of a Lithium battery using a common 1-port BMS on the market
  • BMS has separate charging and discharging 2-ports:
  • FIG.2 depicts a lithium battery system with separate charge and discharge 2-ports BMS uses N-MOSFET type negative pass switching.
  • cathode of the charging generator (6) connects to the negative charging port (9) and cathode of the load (7) connects to the negative discharge port (5) of the battery pack.
  • the operation of this type is only different from the common charge-discharge 1-port type in that when discharging, the discharge current from the cathode of the load (7) passes through the negative discharge port (5) and passes through the MOSFET discharge (2) to return to the cathode of the battery block (1).
  • the current from cathode of the battery block (1) sequentially passes through the MOSFET discharge (2) and MOSFET (3) charge of the BMS (4), go out the cathode discharge (9) of the battery pack and return to cathode of the charging generator (6).
  • BMS (4) will turn off the charging MOSFET (3).
  • the discharge pass through the discharge MOSFET (2) and negative discharge port (5) is still clear.
  • BMS over-discharged (low- voltage)
  • BMS (4) will turn off MOSFET discharge (2) and then the charging path will also be interrupted.
  • the load must be isolated from the battery.
  • Some 2-port BMS have a way to directly connect MOSFET charging to the cathode of the battery block. When the discharge is interrupted, the charging path is still clear to be ready to receive charging power without isolate the load.
  • the BSM type using P-mofet also works similarly, but the MOSFETs will be controlled to interrupted the positive path of the battery block.
  • Figure 2 H. 2 The diagram of a Lithium battery diagram using a common 2-port separate BMS on the market
  • the electrical circuit on a traditional internal combustion engine has characteristics that are not suitable for both types of BMS mentioned above: 1) The engine has only one unique electrical path and all power sources from a direct current generator, power from the starting battery and loads are all connected in parallel to this power path. Thus, the engine electrical system only allows one common port for charging and discharging the starting battery
  • lithium battery manufacturers have launched lithium battery products for starter engine with acknowledge their shortcomings as follows:
  • the battery uses common port BMS type so it can connect to the engine without having to change the engine 's existing circuit.
  • the ATZ7-RS starting battery from Antigravity Batteries (USA) is equipped with a "Re-start” button to wake up the battery after the charging and discharging path are interrupted: https://antigravitybatteries.com/products/starter- batteries/restart-oem/atz7-rs/
  • Starter batteries are mainly launched on the market for use in sports cars (motorsport), vehicles with special uses, vehicles have professional personnel to monitor the technical status and be able to handle problems
  • the purpose of the Lithium Starter Battery invention is to improve the Battery Management System (BMS) to overcome the shortcomings of the two commonly used BMS systems. This will facilitate the easy and widespread use of lithium batteries for engine starting purposes and completely replace lead-acid batteries.
  • BMS Battery Management System
  • Lithium Starter Battery invention proposes the following improvements:
  • Lithium battery cells for the starter battery, including, but not limited to, LFP, LNMC, and LTO.
  • the diode charging and discharging component mentioned above can be arranged on a separate electrical circuit to connect with commonly used 2-port BMSs on the market, or it can be integrated into the 2-port BMS circuit to create a completely new type of BMS, which can be called a startup BMS.
  • the cathode of the charge transmitter (6) and the cathode of the load (7) are both connected to the common negative terminal (10) of the battery pack.
  • the cathode (10) is connected to the charging cathode (9) of the Battery Management System (BMS) (4) through a charging diode (11) or multiple parallel charging diodes in the forward direction.
  • the cathode (10) is also connected to the discharging cathode (5) of the BMS (4) through one or more discharging diodes (12).
  • the BMS (4) will turn off the charging MOSFET (3).
  • the discharge path in turn passes through the common negative terminal (10), the discharging diode (12), the negative discharge terminal (5), and the discharging MOSFET (2) to the cathode of the battery pack.
  • FIG. 4 The Starter Lithium Battery Diagram (P-Mosfet type) V. Briefly describe the illustrations.
  • FIG. 1 The diagram of a Lithium battery using a common 1 -port BMS on the market
  • Figure 2 H. 2 The diagram of a Lithium battery diagram using a common 2-port separate BMS on the market
  • FIG. 3 The Starter Lithium Battery Diagram (N-Mosfet type)
  • FIG. 4 The Starter Lithium Battery Diagram (P-Mosfet type)
  • a motor starting battery product can be created as follows.
  • the minimum charging voltage required from the engine's charging generator for a 3S LNMC battery configuration is 12.6V, calculated as 4.2 x 3.
  • the 4S LFP battery configuration requires a minimum charging voltage of 13.8V(3.65 x 4 )from the engine's charging generator.
  • a starting current of 173A(2000W/ 12V) needs to be supplied.
  • - BMS also needs to select according to the high and low voltage protection thresholds of the battery element type and the number of battery elements. ) Select the charging diode based on the charging voltage and charging current specifications of the charging generator, as well as the required charging voltage of the battery element. If there is a voltage difference across the diode, a heat sink aluminum plate needs to be added. For example:
  • the selected charging diode should have a forward voltage drop close to the difference between the charging voltage of the battery and the maximum allowable charging voltage.
  • a forward voltage drop of approximately 1.4V(14.0 - 12.6) should be chosen. Specifically, this can be achieved by using two series-connected silic diodes.
  • a discharge diode or a parallel combination of diodes with a forward current of not less than 173A and an instantaneous current of 2-3 times is required.
  • the discharge diode used should be selected with a low forward voltage drop (such as a low voltage Schottky diode) or with no voltage drop (ideal diode) in order to maximize power losses during startup and reduce heat generation.
  • auxiliary components battery bridge, conductor wire, aluminum heat sink plate, enclosure shell.
  • the minimum requirements include having a constant current and voltage power supply, simulated loads at various levels, and electrical measuring instruments for voltage, current, capacity, and temperature.
  • Lithium batteries on the other hand, have a long lifespan of up to 10 years, and even after that, they can still be used because they only experience a decrease in capacity of up to 80%. Lithium batteries always provide stable electrical quality throughout their lifespan.
  • Lithium batteries have a selling price that is about double compared to other types of batteries, but they have a lifespan that is five times longer and do not require maintenance like lead-acid batteries. Therefore, besides the convenience mentioned above, using lithium batteries is also more advantageous than lead-acid batteries in terms of economics.
  • Lithium batteries as a superior type of battery compared to lead- acid batteries in many aspects: high energy density, compact size, stability

Landscapes

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

Abstract

L'invention concerne des produits de batterie au lithium pour démarrer des moteurs à combustion interne. Actuellement, les produits de démarrage à batterie au lithium utilisent un BMS à 1 port commun pour la charge et la décharge afin de s'adapter aux systèmes d'alimentation électrique existants des voitures, des motocyclettes, des générateurs ou des moteurs de bateaux. La différence du produit de batterie au lithium selon l'invention est qu'il utilise pour la charge et la décharge un type de BMS à 2 ports pour couper le trajet de charge sans affecter la continuité de la décharge. Dans le même temps, un ensemble de diodes de charge et de décharge ayant une conductivité appropriée est ajouté pour combiner les deux ports de charge et de décharge distincts du BMS en un port de charge et de décharge commun du bloc-batterie.
PCT/VN2024/000005 2023-12-14 2024-06-28 Batterie au lithium pour démarrer un moteur à combustion interne Pending WO2025129209A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
VN1202308937 2023-12-14
VN1-2023-08937 2023-12-14

Publications (1)

Publication Number Publication Date
WO2025129209A1 true WO2025129209A1 (fr) 2025-06-19

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Application Number Title Priority Date Filing Date
PCT/VN2024/000005 Pending WO2025129209A1 (fr) 2023-12-14 2024-06-28 Batterie au lithium pour démarrer un moteur à combustion interne

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WO (1) WO2025129209A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080106235A1 (en) * 2006-11-03 2008-05-08 Broadcom Corporation Battery protection circuits detection method and apparatus
US20090295334A1 (en) * 2008-06-03 2009-12-03 Jongwoon Yang Battery pack and charging method for the same
US20110101921A1 (en) * 2009-11-03 2011-05-05 Jin-Hong An Battery pack
US20190356138A1 (en) * 2017-02-03 2019-11-21 Samsung Sdi Co., Ltd Battery packs and methods for controlling charging of battery packs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080106235A1 (en) * 2006-11-03 2008-05-08 Broadcom Corporation Battery protection circuits detection method and apparatus
US20090295334A1 (en) * 2008-06-03 2009-12-03 Jongwoon Yang Battery pack and charging method for the same
US20110101921A1 (en) * 2009-11-03 2011-05-05 Jin-Hong An Battery pack
US20190356138A1 (en) * 2017-02-03 2019-11-21 Samsung Sdi Co., Ltd Battery packs and methods for controlling charging of battery packs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Battery management system BMS", AVDWEB, 18 November 2023 (2023-11-18), pages 1 - 11, XP093324040, Retrieved from the Internet <URL:https://avdweb.nl/solar-bike/electronics/battery-management-system-bms#> *

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