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Voltage acquisition circuit and passive equalization acquisition board

A technology of voltage acquisition and passive equalization, which is applied in the field of computer-readable storage media, processors, and diagnostic devices, can solve the problems of poor working stability of the acquisition board, and achieve the effect of enhancing stability

Pending Publication Date: 2021-07-13
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of this application is to provide a voltage acquisition circuit, a passive balanced acquisition board, a fault diagnosis method for a passive balanced acquisition board, a diagnostic device, a computer-readable storage medium and a processor, so as to solve the problem of the stability of the acquisition board in the prior art poor sex problem

Method used

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  • Voltage acquisition circuit and passive equalization acquisition board
  • Voltage acquisition circuit and passive equalization acquisition board
  • Voltage acquisition circuit and passive equalization acquisition board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0108] This embodiment relates to an overall workflow of a passive balanced acquisition board, such as Figure 6 shown.

[0109] When the car is ignited and started, the acquisition board is powered on and the MCU starts to work;

[0110] After power on, firstly initialize the MCU minimum system and peripherals, and enter the working state;

[0111] After initialization, the program conducts self-test, fault query, checks whether there is a fault before the last power failure, and after the query. If yes, enter the fault diagnosis mode;

[0112] After the self-test is free of faults, check whether there is any command information from the BCU, if no command from the BCU is received, enter the fault diagnosis mode;

[0113] After receiving the instruction from the BCU, the acquisition board executes the corresponding instruction, and collects data such as voltage and current, and then performs transmission processing. If the collected data exceeds the maximum allowable rang...

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PUM

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Abstract

The invention provides a voltage acquisition circuit and a passive equalization acquisition board. The voltage acquisition circuit comprises a first protection unit, a filtering unit and a second protection unit, wherein thefirst protection unit is provided with a first end and a second end, and the first end of the first protection unit is used for connecting the positive electrode of a single battery; the filtering unit is provided with a first end and a second end, the first end of the filtering unit is electrically connected with the second end of the first protection unit, and the second end of the filtering unit is used for being electrically connected with a first pin of a single battery control chip; and the second protection unit is provided with a first end and a second end, the first end of the second protection unit is used for being connected with the negative electrode of the single battery, the second end of the second protection unit is used for being electrically connected with a second pin of the single battery control chip, and the first protection unit and the second protection unit are at least used for enabling the voltage acquisition circuit not to be impacted by current. According to the scheme, the voltage acquisition circuit is not impacted by current, so that the stability of the voltage acquisition circuit is enhanced.

Description

technical field [0001] The application relates to the field of new energy vehicles, in particular, to a voltage acquisition circuit, a passive equalization acquisition board, a fault diagnosis method for the passive equalization acquisition board, a diagnostic device, a computer-readable storage medium and a processor. Background technique [0002] At present, new energy vehicles are equipped with BMS (Battery Management System), the goal is to manage and control the battery reasonably and effectively, and maintain the consistency of the battery cells to the greatest extent, so as to ensure battery safety, prolong battery life, and reduce charging. The extra energy loss during the discharge process can improve the battery life of the vehicle. [0003] BMS can be divided into three functional modules according to functions: BCU (main control module), BMU (battery information monitoring module), and HVU (insulation monitoring module), such as figure 1 shown. The "passive bal...

Claims

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Application Information

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IPC IPC(8): B60L58/20B60L58/13B60L3/00
CPCB60L3/0046B60L3/0084B60L2240/545B60L2240/547B60L58/13B60L58/20Y02T10/70
Inventor 陈建清张振沣吴中建胡友涛周奇聪
Owner GREE ELECTRIC APPLIANCES INC