Current precision detection system and detection method and BMS test system
A technology of precision detection and current, applied in the direction of only measuring current, measuring current/voltage, measuring device, etc., can solve problems such as low efficiency and long detection time
Pending Publication Date: 2021-07-16
SUZHOU HUAXING YUANCHUANG TECH CO LTD
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[0003] Based on this, it is necessary to provide a current accuracy detection system and detection method and a BMS test system for the problems of long detection time and low efficiency when detecting the current accuracy of a BMS testing machine in the prior art
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[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0024] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "front", "rear", "circumferential" and...
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The invention relates to the technical field of lithium battery BMS testing and particularly relates to a current precision detection system and method. The system comprises a testing module, a control module and an analysis module, wherein the testing module comprises a testing resistor unit and a voltage measuring unit, the testing resistor unit is used for connecting a to-be-tested testing machine, and the voltage measuring unit is used for measuring voltage values of two ends of the testing resistor unit; the control module is electrically connected with the voltage measuring unit and the to-be-tested tester and is used for controlling the to-be-tested tester to output current to the test resistor unit and controlling the voltage measuring unit to measure voltage values at two ends of the test resistor unit; and the analysis module is electrically connected with the test module and is used for acquiring the current precision of the to-be-tested test machine according to a resistance value of the test resistor unit and the voltage value measured by the voltage measurement unit. According to the system, a high-precision resistor is connected to a to-be-tested test machine, the to-be-tested test machine outputs the preset current to the high-precision resistor, and the current is converted into the voltage by using the high-precision resistor with the calibrated resistance value, so rapid detection of the current precision is realized.
Description
technical field [0001] The invention relates to the technical field of lithium battery BMS testing, in particular to a current accuracy detection system and detection method and a BMS testing system. Background technique [0002] With the increasing application requirements of BMS testing machines, the accuracy requirements of BMS (Battery Management System) testing machines are getting higher and higher. How to quickly check the current accuracy of BMS testing machines has become an urgent problem to be solved. In the prior art, a higher-precision DMM (Digital Multimeter) is generally used to spot-check the testing machine, and only one-to-one spot-checking of the testing machines is performed, and the single-channel spot-checking time is long and the efficiency is low. At the same time, when the accuracy of the testing machine has reached the uA level, the price of DMMs that can spot-check the testing machine is very expensive. The high price also limits the number of high...
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Login to View More IPC IPC(8): G01R19/00
CPCG01R19/0092
Inventor 杨文凡王宏
Owner SUZHOU HUAXING YUANCHUANG TECH CO LTD