Vehicle-level Electric Drive System-Energy Storage System (ESS)

Technical features

1、Cell Selection: CATL lithium iron phosphate (LFP) cells are adopted. Featuring high thermal stability and long cycle life, they are suitable for harsh conditions including high temperature, high vibration and heavy dust. With BMS balancing control, the service life of the battery pack can be effectively extended.

2、Pack & Enclosure: Adopts standard modules combined with high-strength steel / aluminum alloy enclosure. The structure satisfies vehicle-level vibration, shock and IP rating requirements.

3、Battery Management System (BMS): Adopts master-slave management architecture to achieve cell voltage/temperature sampling, SOC estimation, balancing management and fault protection. It supports CAN communication and interaction with the vehicle controller. Battery pack operating data is uploaded by BMS for remote monitoring and O&M management.

4、High-Voltage Box (High-Voltage Distribution Box): Integrates main contactors, precharge circuits, fuses and current sensors to implement high-voltage switching and protection between the battery pack, main drive system and charger.

5、Thermal Management Unit: Equipped with liquid cooling & heating thermal management. It automatically regulates the battery operating temperature according to ambient temperature, ensuring chargeability at low temperatures and preventing overheating at high temperatures.

6、Safety Protection: It provides protection against overcharge, overdischarge, overcurrent, overtemperature, insulation fault monitoring and short-circuit protection. It is fitted with a Manual Service Disconnect (MSD) and fire protection port.

7、Customizable Battery Specifications: Different battery specifications can be tailored to user requirements, including variants with different energy capacities, 1C or 2C rate products.

8、Wide Temperature Adaptation: The operating temperature range spans -35℃ ~ +55℃. Equipped with a low-temperature heating function, it supports normal charging and operation in winter.

9、Platform-based design: The battery box features standard interfaces and quick-change design. Products with different energy capacities are interchangeable for easy upgrade and maintenance.

Charging and Performance

1、The charging process is coordinately controlled by BMS and the charger. It features over-temperature current derating, automatic full-charge stop and fault protection functions.

2、BMS uploads battery pack operating data, supporting remote monitoring, fault alerts and SOH assessment to enable predictive maintenance.

3、2C batteries are available as an option. They feature excellent charge-discharge performance, with short-term charging current up to 4 times the rated charging current.