Middle computer for testing smart batteries and testing method of middle computer

Abstract

The invention discloses a middle computer for testing smart batteries and a testing method of the middle computer. The middle computer comprises a smart Internet of Things communication control unit,a third party interface unit, a simulating charging pile unit, a channel parallel unit, an off-line operation unit, a power failure recovery unit and an auxiliary sampling unit. According to the middle computer for testing the smart batteries and the testing method of the middle computer, firstly the transfer function between an upper computer and a lower computer can be realized; secondly, the management of the lower computer is further participated, functions such as parallel connection, off-line and simulating charging piles of the lower computer are realized; hardware and software resources of the lower computer are liberated, and thus the charging and discharging control of the lower computer is simpler and more reliable; and rich interfaces are further provided, and third party equipment such as BMS, a pressure sensor, a walk-in thermostat and a direct-current controllable power supply are expanded flexibly.

Description

technical field [0001] The invention belongs to the field of battery testing, in particular to an intermediate computer for smart battery testing and a testing method thereof. Background technique [0002] Secondary batteries have been widely used in communication, transportation, military, electric power and other fields. Charge and discharge testing is a key link in the manufacturing process of secondary batteries. Therefore, in order to improve the research and production efficiency of secondary batteries, the charge and discharge test system Scalability, reliability, and security are very important. The battery charge and discharge test system generally includes a host computer, a middle computer and a lower computer. The upper computer is the human-computer interaction interface of the whole system, and it is a direct tool for users to operate, view, analyze and manage. The lower computer is the executive body of the test system, which executes the corresponding contr...

AI Technical Summary

Problems solved by technology

Generally, the test system realizes the parallel connection through the communication between the lower computers, or realizes the parallel connection through the data processing of the upper computer. Both methods have their disadvantages.

Parallel connection of the lower computers: the lower computers must communicate with each other to coordinate current and merge data, which increases the communication bus occupancy of the lower computers; parallel connection of the upper computer: it is only a simple data merger, and the current output cannot be controlled from the bottom layer. add unreliable factors

At present, most of the offline (lost connection with the upper computer) data of the test system is stored in the SD card of the lower computer, but in fact, offline is a rare abnormal situation, and even if it occurs, it lasts for a short period of time. One SD card for one test system It is enough to save offline data. Dozens of lower computer channels are equipped with SD cards, which greatly wastes resources; the battery pack needs to be tested for charge and discharge cycles before leaving the factory, but at this time the battery pack has been installed, and the charging port is generally a standard charging gun interface

When discharging, use the battery test system to discharge, and when charging, you need to connect an additional charging pile to communicate with the internal BMS for charging. Support the expansion of BMS interface, other third-party equipment expansion is very inflexible

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