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Battery voltage acquisition and calibration circuit

A battery voltage and calibration circuit technology, which is applied in the direction of measuring current/voltage, measuring electrical variables, and using digital measurement technology to measure, can solve the problems of high price and high product cost, and achieve low cost, simple structure, and good performance. The effect of economic value

Active Publication Date: 2017-05-31
SHENZHEN CLOU ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are analog batteries on the market, but they are expensive, and when mass-producing battery management units, a large number of equipment are required for calibration and testing, which will increase the product cost several times

Method used

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Embodiment Construction

[0018] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0019] like figure 1 As shown, a battery voltage acquisition and calibration circuit includes a battery voltage acquisition module, and also includes an MCU, a multi-channel reference voltage generation circuit, a constant current source circuit, and a voltage follower circuit. The output terminal of the MCU is connected to the multi-channel reference voltage. The input end of the generation circuit is connected, the multi-channel reference voltage generation circuit can generate multiple high-precision reference voltages, and the MCU can control the multi-channel high-precision reference voltage generation circuit to output a variety of high-precision reference voltages; the multi-channel reference voltage The output end of the voltage acquisition circuit is sequentially connected to the battery voltage a...

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Abstract

The invention discloses a battery voltage acquisition and calibration circuit. The battery voltage acquisition and calibration circuit comprises a battery voltage acquisition module and further comprises an MCU (Microprogrammed Control Unit), a multi-path standard voltage generation circuit, a constant-current source circuit and a voltage following circuit; the MCU is used for controlling the multi-path standard voltage generation circuit to generate a plurality of paths of standard voltage and battery voltage is simulated through the constant-current source circuit and is acquired through the battery voltage acquisition module; the MCU is connected with the battery voltage acquisition module and is used for transmitting a voltage value of the standard voltage to the battery voltage acquisition module; the battery voltage acquisition module is used for comparing the voltage value of the acquired standard voltage with a standard voltage value transmitted by the MCU, and calculating errors and automatically calibrating, and an output band loading capability is increased through the voltage following circuit; the aim of automatically acquiring and calibrating voltage of a single battery or a plurality of batteries is realized; meanwhile, the battery voltage acquisition and calibration circuit is simple in structure and low in cost and has good economic value. The battery voltage acquisition and calibration circuit disclosed by the invention is widely applied to the technical field of battery management.

Description

technical field [0001] The invention relates to the technical field of battery management, in particular to a battery voltage acquisition and calibration circuit applied to a battery management unit. Background technique [0002] With the improvement of people's awareness of environmental protection, new energy technologies have been widely used. Among them, energy storage technology and new energy electric vehicles have developed rapidly. The core of energy storage products and electric vehicles is the battery, and the core of the battery is the battery management system (BMS). As an electronic component for real-time monitoring, automatic balancing, and intelligent charging and discharging, the battery management system (BMS) plays important functions such as ensuring safety, extending life, and estimating remaining power. It is an indispensable and important component in power and energy storage battery packs. In the battery management system, cell voltage acquisition is...

Claims

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Application Information

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IPC IPC(8): G01R19/25G01R35/00
CPCG01R19/2503G01R35/005
Inventor 范家闩张鑫李仁彪王宁
Owner SHENZHEN CLOU ELECTRONICS
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