Electric automobile battery voltage detection system

Abstract

The invention belongs to the technical field of battery detection, and particularly relates to an electric automobile battery voltage detection system. The problems that a function circuit needs to beadditionally arranged for an existing battery voltage detection circuit, a measurement voltage range is limited by a measurement range of a function module integrated by a microcontroller, and when it is detected that battery voltage breaks down, a battery is inconvenient to maintain or replace need to be solved, so that the electric automobile battery voltage detection system comprises an automobile body, the battery, a voltage conversion module, a reference voltage module, a comparator, a controller, a voltage dividing module and an alarm unit, wherein the battery, the voltage conversion module, the reference voltage module, the comparator, the controller, the voltage dividing module and the alarm unit are connected in series. According to the system, no function circuit needs to be extra added to the voltage detection of the battery, and meanwhile, the measurement voltage range is not limited by the measurement range of the function module integrated by the microcontroller; and through the arrangement of a mounting base, on the one hand, the battery can be buffered and protected, on the other hand, the battery can be conveniently taken out and maintained.

Description

technical field [0001] The invention relates to the technical field of battery detection, in particular to an electric vehicle battery voltage detection system. Background technique [0002] Batteries are an essential part of automobiles and can be divided into traditional lead-acid batteries and maintenance-free batteries. Because the battery uses lead-calcium alloy as the grid, the amount of water decomposition generated during charging is small, and the amount of water evaporation is also low. In addition, the outer shell adopts a sealed structure, and the sulfuric acid gas released is also very little, so it is compared with traditional batteries. , has the advantages of no need to add any liquid, docking the pile head, and long power storage time. [0003] The existing battery voltage detection circuit uses measuring equipment such as an analog-to-digital conversion module or a functional module integrated with a microcontroller to measure the voltage at both ends of t...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the need to add additional functional circuits to the battery voltage detection circuit in the prior art. The measurement voltage range is limited by the measurement range of the functional module integrated by the microcontroller. When it is detected that the battery voltage fails, the entire The battery is removed for maintenance or replacement, and it takes a long time to disassemble, and a battery voltage detection system for electric vehicles is proposed.

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