Battery cell fault detection circuit and detection method

A fault detection circuit and battery cell technology, which is applied in secondary battery testing, secondary battery repair/maintenance, electrical measurement, etc., can solve the problems of many transmission nodes, low signal transmission efficiency, long signal transmission path, etc., to achieve The effect of reducing the failure rate and shortening the signal transmission path

Inactive Publication Date: 2019-04-16
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the signal transmission path is long, the signal transmission efficiency is low, and there are many transmission nodes, it is easy to cause the failure of the detection signal to be transmitted due to node failure.

Method used

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  • Battery cell fault detection circuit and detection method
  • Battery cell fault detection circuit and detection method

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Embodiment

[0030] This embodiment relates to a battery cell failure detection circuit, which is added to a battery pack composed of multiple connected cells. The circuit mainly includes a controller, an acquisition chip, and a processing and sending unit. Wherein, the acquisition chip is set corresponding to each of the said batteries, so as to detect the failure of each of the said batteries, and output a fault signal when the said batteries break down; the processing sending unit corresponds to each of the said acquisition chips A plurality of sets; each of the processing and sending units is used to receive and process the fault signal sent by the corresponding acquisition chip, and then send it to the controller.

[0031] Depend on figure 1 As shown, the controller of this embodiment adopts a vehicle BCU, and an MCU chip is arranged inside it. The acquisition chip uses the acquisition chip in the CMC of the acquisition board of each cell management system to collect the Fault signal...

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Abstract

The invention provides a battery cell fault detection circuit and a detection method. The battery cell fault detection circuit is added to a battery pack formed by a plurality of cells which are connected to each other. The circuit comprises a controller, acquisition chips and processing and sending units, wherein the acquisition chips correspond to each cell, detect the fault of each cell and output a fault signal when the cell has a fault; the processing and sending units correspond to the plurality of the acquisition chips; and each processing and sending unit is used to receive the fault signal sent by the corresponding acquisition chip and process the signal, and then send the signal to the controller. In the technical scheme, when any cell has the fault, a Fault signal is generated by the acquisition chip corresponding to the cell which has the fault and is directly sent to the controller after being processed so that a signal transmission path is effectively shortened and a failure rate is reduced.

Description

technical field [0001] The invention relates to the technical field of power battery circuit detection, in particular to a battery cell fault detection circuit. Background technique [0002] As the market demand for electric vehicles continues to increase, the safety of electric vehicles has received increasing attention. Whether it is a pure electric vehicle or a plug-in hybrid electric vehicle, the power battery system is an electric energy storage device for electric new energy vehicles. Its total voltage is generally relatively high, and the battery pack is relatively a relatively high-seal environment. The power battery system itself is a complex system integrating chemical, electrical, and mechanical characteristics. It is necessary to take into account the satisfaction of various characteristics during system design, especially the safety and life attenuation included in the chemical characteristics of the battery cell, which cannot be directly evaluated. It is also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/385H01M10/42
CPCH01M10/4285Y02E60/10
Inventor 颜广博吴頔杨金硕
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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