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Multichannel converter, self-diagnosis method thereof and battery management system

A battery management system and converter technology, applied in the field of conversion systems, can solve problems such as the inability to guarantee the reliable operation of the battery and the inability of the deviation compensation to achieve the desired effect.

Active Publication Date: 2012-07-25
AOTU ELECTRONICS WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when an abnormal situation occurs between the analog channel and the ADC, the offset compensation may not achieve the desired effect
Therefore, reliable operation of the battery may not be guaranteed

Method used

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  • Multichannel converter, self-diagnosis method thereof and battery management system
  • Multichannel converter, self-diagnosis method thereof and battery management system
  • Multichannel converter, self-diagnosis method thereof and battery management system

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Embodiment Construction

[0035] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to make the characteristics and advantages of the present invention more obvious.

[0036] While the invention will be described in conjunction with the following examples, it will be understood that it is not intended to limit the invention to these examples. On the contrary, the invention is intended to cover various alternatives, modifications and equivalents as defined within the spirit and scope of the invention as defined by the claims.

[0037] Furthermore, in the following detailed description of the invention, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known schemes, procedures, componen...

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PUM

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Abstract

The invention discloses a multichannel converter, a self-diagnosis method thereof and a battery management system. The multichannel converter comprises a plurality of channels, a converter, a control module and a counter, wherein the channels are used for measuring a first group of signals; the converter is used for converting the first group of signals into a second group of signals; the controlmodule is used for judging either the channels or the converter is in a non-normal state; and the counter is coupled with the control module and is used for calculating the frequency the channels andthe converter are in the non-normal states. The multichannel converter adopts the control module to judge either the channels or the converter is in a non-normal state, and uses the counter to calculate frequency the channels and the converter are in the non-normal states, and thus, the multichannel converter has a self-diagnosis function.

Description

technical field [0001] The invention relates to a conversion system, in particular to a multi-channel converter, a self-diagnosis method of the multi-channel converter and a battery management system. Background technique [0002] Now, lithium batteries have been widely used in the field of green vehicles, such as electric vehicles and hybrid electric vehicles. A single cell in a lithium battery operates at about 3 to 4 volts, but EVs and HEVs typically require voltages as high as 100+ volts. Typically, multiple battery cells are connected in series to drive electric and hybrid electric vehicles. [0003] In battery management, the status of battery cells, such as battery voltage, battery temperature, and battery current, needs to be measured and sent to an analog-to-digital converter through multiple analog channels. Typically, offset cancellation is performed to improve the accuracy of the ADC. However, when an abnormal condition occurs between the analog channel and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00G01K7/24G01R31/36
Inventor 侯晓华刘仕强张迎国
Owner AOTU ELECTRONICS WUHAN