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Battery module single voltage acquisition system based on traversal binary tree

A single voltage and acquisition system technology, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve problems such as the limitation of the maximum input range, and achieve the effect of ensuring safe and effective use, wide application range, and port saving

Active Publication Date: 2020-01-03
SINOCAT ENVIRONMENTAL TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The input side of the operational amplifier is limited by the maximum input range of the differential mode voltage, the common mode voltage, and is also affected by the supply voltage of the operational amplifier

Method used

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  • Battery module single voltage acquisition system based on traversal binary tree
  • Battery module single voltage acquisition system based on traversal binary tree
  • Battery module single voltage acquisition system based on traversal binary tree

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Embodiment Construction

[0037] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] The voltage acquisition system proposed by the present invention is suitable for battery modules in series, and the battery modules include M single batteries connected in series, where M≥2. Number M single cells connected in series with binary numbers in order of voltage level from low to high, and the battery with the lowest voltage level is numbered 0. This is because the binary code can just correspond to the binary tree data structure. When traversing the binary tree data structure When you can find the corresponding single battery.

[0039] Such as figure 1 As shown, the present invention includes a controller, a switch selection unit, a buck-boost module and an LED light display module. When the voltage acquisition system is working, the controller selects a single battery in the battery module...

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Abstract

The invention relates to a battery module monomer voltage acquisition system based on traversal binary tree, which belongs to the field of monomer battery voltage acquisition. It is suitable for battery modules in series, including controller, switch selection unit, buck-boost module and LED light display module. The controller outputs the output signals of switch selection control terminals in different combinations to the switch selection unit, which is selected by the switch selection unit. The voltage of the corresponding single battery is collected, and the collected signal is adjusted to an appropriate range through the buck-boost module and output to the controller. The controller measures the voltage of the single battery, and the real-time detected single battery can be displayed according to the LED light The combination of bright and dark LED lights in the module can be seen. The invention saves the ports of the controller, overcomes the influence of the common mode voltage, and at the same time, there is electrical isolation between each module, which has strong anti-interference ability and wide application range.

Description

technical field [0001] The invention relates to the field of single battery voltage acquisition, and is particularly suitable for selectively measuring the voltage of internal batteries of a high-voltage module formed by connecting multiple batteries in series. Background technique [0002] With the lack of energy, the rapid development of new energy electric vehicles. In order to ensure battery safety and improve battery life, it is necessary to collect battery voltage to understand the voltage status of a single battery at each time period. At present, there are many methods for collecting the voltage of a single battery, and the examples are as follows: [0003] Use the integrated chip to complete the battery voltage acquisition. This method has the problems of high price, complicated peripheral circuit design, and difficult debugging; and in order to detect more batteries, it is necessary to cascade the integrated chips, which again increases the difficulty of implemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/396G01R31/385
CPCG01R31/3646G01R31/396
Inventor 吴孟强徐自强马永笠杨娟杨云龙王晓辉伍青
Owner SINOCAT ENVIRONMENTAL TECH
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