Array magnetometer and method for measuring charge and discharge current distribution of power battery pack
A technology for charging and discharging current and power battery packs. It is applied in the direction of measuring current/voltage, measuring only current, and measuring electrical variables. It can solve problems such as increasing the difficulty of testing, reduce magnetic field disturbance, improve accuracy, and increase polarization. degree of effect
Active Publication Date: 2021-06-29
武汉中科昌华新能源技术有限公司
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Problems solved by technology
In addition, in order to ensure the reliability of the test results, it is necessary to conduct synchronous tests on the batteries in the group, and the corresponding temperature measurement equipment needs to have batch test functions, which will further increase the difficulty of testing
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[0041] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the examples. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0042] Such as figure 1 As shown, the array magnetometer for measuring the charge and discharge current distribution of the power battery pack includes a magnetometer control system, a multi-channel parallel receiving link, a multi-channel pre-polarization link, an array pre-polarization coil, and an array detection coil.
[0043] The battery pack to be tested includes batteries to be tested distributed in an array of m rows×n columns;
[0044] The multi-channel parallel receiving chain includes m×n signal receiving chains;
[0045] The multi-channel prepolarization link includes...
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The invention discloses an array magnetometer for measuring the charge and discharge current distribution of a power battery pack, including a magnetometer control system, and also includes a multi-channel parallel receiving link, a multi-channel pre-polarization link, an array pre-polarization coil and an array The detection coil, the multi-channel parallel receiving link includes multiple signal receiving links; the multi-channel prepolarization link includes multiple prepolarization links; the array prepolarization coil includes multiple prepolarization coils; the array detection The coil includes a plurality of detection coils; the battery pack to be detected includes a plurality of batteries to be detected, and the invention also discloses a method for measuring the charging and discharging current distribution of the power battery pack, and the invention can realize the non-destructive measurement of the charging and discharging current of the battery; Accuracy; improve the reliability of inversion results; improve the evaluation efficiency of battery characteristics.
Description
technical field [0001] The invention belongs to the technical field of power battery detection, and in particular relates to an array magnetometer for measuring the charge and discharge current distribution of a power battery pack, and also relates to a method for measuring the charge and discharge current distribution of a power battery pack, in particular to the application of magnetic resonance technology to measure the charge and discharge current of a battery method. Background technique [0002] Up to now, the number of new energy vehicles has reached more than 3 million. New energy vehicles use power batteries for energy storage. After being fully charged from the grid, they can provide clean electricity for driving. However, the capacity of the power battery will continue to decay during the repeated charge and discharge process. When the available capacity decays to about 80%, the power battery will be retired from the new energy vehicle. Therefore, the number of po...
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IPC IPC(8): G01R19/00G01R33/06
CPCG01R19/0092G01R33/06
Inventor 陈俊飞陈黎刘朝阳杨春升汪慧娟陈方
Owner 武汉中科昌华新能源技术有限公司