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Li-ion Battery Management System: Introduction and Applications

Learn about the essential functions, types, topologies, and formats of Li-ion Battery Management Systems. Explore balancing technologies and current limits for optimal battery performance and safety.

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Li-ion Battery Management System: Introduction and Applications

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  1. Li-ion batteriesand applicationsBaterías de iones de litio y aplicacionesDavide AndreaElithion Inc. Volume 1: Batteries Ch 5: Li-ion Battery Management System (BMS) Volúmen 1: Baterias Cap. 5: Sistema de Gestión de Batería (BMS) por baterias de iones de litio

  2. Chapter 5.1 CSSSCSS Li-ion BMS - Introduction BMS Li-ion - Introducción Ch 5.1: Li-ion BMS - Introduction Ch 5.6: Li-ion BMS - Current limits

  3. BMS definitionDefinición de BMS Ch 5.1: Li-ion BMS - Introduction • The main job of a Battery Management System is to protect each cell in a battery, by keeping it within its Safe Operating Area • A BMS is required with Li-ion • You are not a BMS!

  4. Four BMS typesCuatro tipos de BMS Ch 5.1: Li-ion BMS - Introduction

  5. Four BMS typesCuatro tipos de BMS Ch 5.1: Li-ion BMS - Introduction

  6. Connection to cellsConexión a las celdas Ch 5.1: Li-ion BMS - Introduction

  7. TopologiesTopologias Ch 5.1: Li-ion BMS - Introduction

  8. TopologiesTopologias Ch 5.1: Li-ion BMS - Introduction

  9. Distributed topologyTopologia distribuida Ch 5.1: Li-ion BMS - Introduction

  10. Banked topologyTopologia en bancos Ch 5.1: Li-ion BMS - Introduction

  11. Master/slave topologyTopologia maestro/esclavo Ch 5.1: Li-ion BMS - Introduction

  12. Distributed master/slave topologyTopologia distribuida maestro/esclavo Ch 5.1: Li-ion BMS - Introduction

  13. Banked master/slave topologyTopologia maestro/esclavo en bancos Ch 5.1: Li-ion BMS - Introduction

  14. BMS formatsFormato de BMS Ch 5.1: Li-ion BMS - Introduction

  15. Chapter 5.2 Li-ion BMS - Analog protector BMS, Protector Circuit Module (PCM) BMS Li-ion - Protector analógico Ch 5.2: Li-ion BMS - Analog protector BMS

  16. Protector placementColocación del protector Ch 5.2: Li-ion BMS - Analog protector BMS

  17. Protector BMS block diagramDiagrama de bloques de un protector Ch 5.2: Li-ion BMS - Analog protector BMS

  18. Protected 18650Celda 18650 protegida Ch 5.2: Li-ion BMS - Analog protector BMS

  19. Charger / PCM comboCargador / protector combinado Ch 5.2: Li-ion BMS - Analog protector BMS

  20. Chapter 5.3 Li-ion BMS - Digital protector BMS BMS Li-ion - Protector digital Ch 5.3: Li-ion BMS - Digital protector BMS

  21. Protector BMS block diagramDiagrama de bloques de un protector Ch 5.3: Li-ion BMS - Digital protector BMS

  22. Chapter 5.4 Li-ion BMS - Digital Battery Management Unit BMU BMS Li-ion - Unidad de Gestión de Batería digital (BMU) Ch 5.4: Li-ion BMS - Digital BMU

  23. Digital BMU block diagramDiagrama de bloques de una BMU Ch 5.4: Li-ion BMS - Digital BMU

  24. BMS power statesEstato de poder del BMS Ch 5.4: Li-ion BMS - Digital BMU

  25. Other BMS statesEstados para otras condiciones Ch 5.4: Li-ion BMS - Digital BMU

  26. Digital BMU functionsFunciones de un BMU digitale Ch 5.4: Li-ion BMS - Digital BMU • Measurement • Management • Evaluation • Control • Logging (optional)

  27. BMS accessoriesAccesorios BMS Ch 5.4: Li-ion BMS - Digital BMU • Thermistor sense module (wired BMS) • High Voltage Front End (HVFE) • Display • Wireless adapters • High power block

  28. Chapter 5.5 Li-ion BMS - Measurement BMS Li-ion - Medición Ch 5.5: Li-ion BMS - Measurement

  29. Cell voltage measurementMedición de voltajes de celdas Ch 5.5: Li-ion BMS - Measurement • Range • Accuracy and resolution • Rate • Current into cell voltage sense inputs

  30. Compatibility of BMS and cellsCompatibilidad de BMS y celdas Ch 5.5: Li-ion BMS - Measurement

  31. Fault protectorProtector de fallas Ch 5.5: Li-ion BMS - Measurement

  32. BMS bankingBMS división en bancos Ch 5.5: Li-ion BMS - Measurement

  33. Cell and bank numberingNumeración teh celdas y bancos Ch 5.5: Li-ion BMS - Measurement

  34. Additional voltage measurementsMediciones de voltaje adicionales Ch 5.5: Li-ion BMS - Measurement

  35. Additional measurementsMedidas adicionales Ch 5.5: Li-ion BMS - Measurement • Temperature • Current • Experimental measurements

  36. Chapter 5.6 Li-ion BMS - Current limits BMS Li-ion - Límites de corriente Ch 5.6: Li-ion BMS - Current limits

  37. Additional measurementsMedidas adicionales Ch 5.6: Li-ion BMS - Current limits • CCL: Charge Current Limit • DCL: Discharge Current Limit

  38. Voltage and current limitsLímites de volatje y corriente Ch 5.6: Li-ion BMS - Current limits

  39. Nuisance shut-down mitigationMitigación del apagado incorrecto Ch 5.6: Li-ion BMS - Current limits

  40. Low voltage warnings and faultsAdvertencias y fallas de bajo voltaje Ch 5.6: Li-ion BMS - Current limits

  41. Current limit outputsSalidas de límite de corriente Ch 5.6: Li-ion BMS - Current limits • CCL: Charge Current Limit • DCL: Discharge Current Limit

  42. Warnings and faultsAdvertencias y fallas Ch 5.6: Li-ion BMS - Current limits

  43. Chapter 5.7 Li-ion BMS - Balancing BMS Li-ion - Balanceo Ch 5.7: Li-ion BMS - Balance

  44. BalancingBalanceo Ch 5.7: Li-ion BMS - Balance • Balancing maximizes battery capacity • It brings all the cells in a series string to the same SoC • It is a performance function (not a safety function)

  45. Required balance currentCorriente necesaria para balanceo Ch 5.7: Li-ion BMS - Balance

  46. Balancing technologiesTecnologías de balanceo Ch 5.7: Li-ion BMS - Balance • Dissipative • Charge transfer

  47. Charge transfer balancing technologiesTecnologías de balanceo, transferencia de carga Ch 5.7: Li-ion BMS - Balance • Cell-to-cell • String • Bus

  48. Charge transfer balancing technologiesTecnologías de balanceo, transferencia de carga Ch 5.7: Li-ion BMS - Balance

  49. Two-level charge transfer balancingBalanceo de transferencia de carga en dos niveles Ch 5.7: Li-ion BMS - Balance

  50. Bank balancing topologyTopología para balancear bancos Ch 5.7: Li-ion BMS - Balance

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