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電池管理系統

Battery Icon電池管理系統 (BMS)

The battery pack is the most expensive single component in an EV and contains detailed monitoring and control to maintain a long, safe operating life. The BMS is responsible for monitoring individual cell health, balancing, operating pack heating and cooling systems, reporting state of charge and disconnecting power from the vehicle in a fault or collision.

This monitoring must continue even when the vehicle itself is parked and not in use. So that, for example, the pack heater can be engaged to maintain acceptable temperature in very cold conditions. This makes energy efficiency and minimizing the load on the HV battery critical to minimize range loss or worst case to prevent a dead vehicle.

PI's reinforced isolated flyback and non-isolated buck converter products are idea for generating internal low voltage supply rails. The extremely low no-load consumption and high efficiency reduce background discharge of the HV battery. Overall power loss is lower than relying on the 12 V system and provides the BMS the ability to continue to operate on loss of the 12 V system (discharged 12 V battery).

參考設計

Additional Documents
設計
產品
DER-952Q - 86 W Power Supply for 800 V Bus Using InnoSwitch3-AQ (1700 V SiC Switch)
Product InnoSwitch3-AQ
DER-1035Q - 70 W Power Supply Replacing 12 V Battery in 400 V BEV Systems Using InnoSwitch3-AQ (1700 V SiC Switch)
Product InnoSwitch3-AQ
DER-953Q - 100 W Power Supply Replacing 12 V Battery in 400 V BEV System Using InnoSwitch3-AQ (900 V PowiGaN Switch)
Product InnoSwitch3-AQ
DER-965Q - 10 W Non-Isolated Buck Power Supply for 400 V BEV Systems using Automotive-Qualified LinkSwitch-TN2Q
Product LinkSwitch-TN2Q
DER-948Q - 35 W Power Supply for 800 V Bus with 30-1000 VDC Input and 15 V Output Using InnoSwitch3-AQ (1700 V SiC Switch)
Product InnoSwitch3-AQ
RDR-707Q - 9.75 W Non-Isolated Buck Power Supply using Automotive-Qualified LinkSwitch-TN2Q
Product LinkSwitch-TN2Q
DER-913Q - 35 W Power Supply for 800 V Bus with 40-1000 VDC Input Using InnoSwitch3-AQ (1700 V SiC Switch)
Product InnoSwitch3-AQ
RDR-919Q - 60 W Power Supply for 800 V Bus with 50-1000 VDC Input Using InnoSwitch3-AQ (1700 V SiC Switch)
Product InnoSwitch3-AQ
DER-719Q - 2.7 W StackFET Buck Power Supply using Automotive-Qualified LinkSwitch-TN2Q
Product LinkSwitch-TN2Q
DER-907Q - 20 W Power Supply for 400 V Bus with Planar Transformer Using InnoSwitch3-AQ
Product InnoSwitch3-AQ
RDR-840Q - 30 W Power Supply for 400 V Bus with 30-550 VDC Input Using InnoSwitch3-AQ
Product InnoSwitch3-AQ
DER-844Q - 4.5 W Non-Isolated Buck Power Supply using Automotive-Qualified LinkSwitch-TN2Q
Product LinkSwitch-TN2Q

相關產品

Related Products
產品
產品規格型錄
拓撲結構
電壓等級
說明
Topology Flyback, Secondary Side - FluxLink Regulated
Power Level 100 W
Description

內含整合式 750 V、900 V及1700 V開關和 FluxLink 回授的 CV/CC QR 返馳式切換開關 IC,適用於汽車應用

Topology Non-Isolated Flyback, Buck/Boost/Buck-Boost
Power Level 850 mA
Description

可供汽車使用的高度節能型切換開關 IC,具備低元件數電源供應器的整合式系統級保護

補充文件