600V300A Battery Test System for Charge and Discharge Testing

System Introduction

Battery Testing System

Product introduction :

Power battery simulation test, rate test;

Cycle life testing;

Power, capacity, energy detection;

Virtual matching of power battery packs: charge-discharge curve fitting, battery consistency detection and evaluation;

High rate charging and discharging capability detection;

Power battery, energy storage battery series module detection: monomer voltage, monomer temperature monitoring (high voltage equipment).

Features (some functions need to be customized):

A high-performance charge-discharge detection platform specially developed for high-power-density battery modules (packages).

Power frequency isolation design, combined with low temperature drift, high performance multi-channel 24-bit

ADC analog-to-digital conversion chip, the steady-state accuracy is higher than traditional equipment.

The system has high power density, multi-channel integration and energy recovery functions.

HMI operation, one-key intelligent automatic calibration.

A variety of BMS adaptability, support charging and discharging the same/different port, support relay/MOSBMS scheme; support independent CAN and RS485 communication expansion; support DBC configuration function.

The remote control of the host computer is realized through Ethernet, which can realize the parallel connection of channels, support pulse and working condition simulation.

Human-computer interaction interface design, the system functions are simple and easy to operate; support a number of custom settings; equipped with regular calibration automatic reminder service.

①System description

Module &PACK detection system is a high-precision charging and discharging device specially developed for high-power battery pack testing. It has the characteristics of high dynamic response speed, high stable accuracy, flexible configuration of multiple channels, etc. It supports pulse testing, cycle life testing, industrial Situation simulation test. The system has multi-channel input and energy recovery functions, which can save a lot of power consumption during the charging and discharging process; it adopts bidirectional high-frequency DC conversion topology, combined with high-performance multi-channel 24-bit AD conversion chip, the sampling resolution is higher than the traditional single-range equipment.

②Practice with numbers

③System Architecture

The whole system adopts a three-layer architecture design (power system layer, centralized monitoring layer, remote interaction layer), and each layer is independent of each other and performs its own duties to ensure the reliable operation of the system.

④System design

1. Strict simulation verification

Build and improve the MTALAB simulation model;

Guarantee the optimal design of each parameter index.

2. Original adaptive damping control algorithm

Effectively suppress the resonance peak generated by the LCL filter to ensure the stability of the closed-loop system .

⑤System structure

1. Three-phase AC-DC module

Three-phase zero-line design: Adopting advanced three-phase zero-line design, through mature and reliable three-phase bridge PFC circuit, the bus voltage is stable, meeting the needs of fast response;

High power and low harmonics: bidirectional power factor > 0.99, low current harmonic < 5%, suitable for various harsh power grids, and the inverter is connected to the grid reliably;

frequency isolation design: through the power frequency isolation transformer, two-way isolation, two-way energy flow, stable and reliable;

Strong compatibility: excellent electromagnetic compatibility, the module is more reliable and efficient.

2. Bidirectional DC-DC module

Adopt BUCK-BOOST circuit: adopt efficient and reliable BUCK-BOOST circuit to realize fast response of charging and discharging;

High-performance LCL filter design: combined with high-performance LCL filter circuit, low ripple, high precision, independent control of each channel, support for channel/module parallel connection;

Meet different test requirements: The topology supports flexible transformation, and can be expanded to be compatible with different charging and discharging ports, zero negative pressure discharge, and meet various battery testing needs.

Equipment Parts List

Data Management and Analysis

PC System Configuration Requirements

System Network Deployment Diagram

The BTS battery detection chemical composition system is based on the original office network and the working platform of the computer equipment. It is very easy to implement, the operation is simple, and the user can log in the system remotely through the Internet to realize various operations on the equipment; using network connection and SQL database, Centralized control of multiple connected equipment cabinets, and centralized management, analysis and statistics of all data. Figure 4is a network deployment diagram of a BTS battery detection device.

Equipment Operating Environment Requirements

Technical Specifications