Battery module multichannel synchronous detection device

Abstract

The invention provides a battery module multichannel synchronous detection device, which comprises a main controller, a signal detection module, an external communication interface module and a clock control system, wherein the main controller is connected with the battery module and the clock control system via the signal detection module and the external communication interface module respectively; and under effects of the clock control system, the main controller controls the signal detection module to synchronously detect parameters of each battery in the battery module. The detection device provided by the invention has a strong anti-interference ability; synchronous detection of multiple battery module parameters and synchronous and real-time detection of multiple parameters for each battery in the battery module can be realized; the channel number of the detection device is improved; and the device can be used by a user in a large-scaled synchronous detection situation.

Description

technical field [0001] The invention relates to a detection device, in particular to a device for synchronous detection of parameters such as voltage, current and temperature of each battery in a battery module. Background technique [0002] For the current battery energy storage system, due to the limitation of the voltage and capacity of the single battery, the battery module is usually formed by connecting the single battery in series and parallel. In order to ensure the good performance of the battery module and prolong its service life, the battery pack needs to be The premise of management and control is that the state parameters of the battery must be obtained accurately and reliably. The voltage, temperature and current of the battery are parameters closely related to the state of the battery. Therefore, accurate testing of battery parameters such as the voltage, temperature and current of a single battery plays an important role in battery state evaluation and safet...

AI Technical Summary

Problems solved by technology

The mechanical relay method has high withstand voltage and low cost, but due to the limited service life and slow response of the mechanical relay, it is not suitable for long-term rapid testing; The voltage ratio is difficult to adjust, which affects the measurement accuracy; the photoelectric relay method overcomes the shortcomings of the traditional mechanical relay, but the test requires time-sharing measurement of each channel and cannot be measured simultaneously; due to the shortcomings of real-time and synchronization, these test methods The evaluation of battery string performance and status cannot be realized accurately in real time

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