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Battery matrix dead point detection system and detection method based on electromagnetic induction effect

An electromagnetic induction and detection system technology, applied in the direction of secondary batteries, circuits, measuring electricity, etc., can solve the problems of affecting mileage and performance degradation of electric vehicles, and achieve the effects of avoiding scrapping, high sensitivity, and simple operation

Active Publication Date: 2021-12-28
四川赛科检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The lithium-ion battery pack used in electric vehicles will partially fail. Although the overall system will not collapse and can continue to drive, the performance of electric vehicles will be reduced, affecting the actual mileage

Method used

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  • Battery matrix dead point detection system and detection method based on electromagnetic induction effect
  • Battery matrix dead point detection system and detection method based on electromagnetic induction effect
  • Battery matrix dead point detection system and detection method based on electromagnetic induction effect

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Embodiment 1

[0037] refer to figure 1 , figure 2 and image 3 , the present embodiment proposes a battery matrix dead point detection system based on the electromagnetic induction effect, which is installed on the lithium-ion battery pack of an electric vehicle and used to monitor the batteries of the battery matrix 3 in the lithium-ion battery pack. The battery matrix dead point detection system includes an elastic polymer film 1; the battery can be a cylindrical battery, and the positive and negative electrodes are respectively arranged at the top and bottom of the cylindrical battery.

[0038] The elastic polymer film 1 is provided with two layers, laid on a unified electrode surface of the battery matrix 3; a magnetic induction power generation unit 2 is arranged between the two layers of elastic polymer film 1; the number of the magnetic induction power generation unit 2 is the same as The batteries of the battery matrix 3 correspond; and each magnetic induction generating unit 2 i...

Embodiment 2

[0043] On the basis of the above-mentioned embodiment 1, in order to better realize the present invention, this embodiment further includes a rectifier circuit and an operational amplifier circuit; the output terminal of the magnetic induction generating unit 2 is connected to the rectifier circuit and the operational amplifier circuit in sequence Then it is connected with the voltage indicating device through the connecting wire 4 .

[0044] Further, the rectification circuit is a bridge rectification circuit, such as Figure 4 shown.

[0045] Other parts of this embodiment are the same as those of Embodiment 1 above, so details are not repeated here.

Embodiment 3

[0047] In this embodiment, on the basis of any one of the above-mentioned embodiments 1-2, in order to better realize the present invention, further, the magnetic induction generating unit 2 includes an induction coil 5 and a central soft iron disposed in the center of the induction coil 5 6. The central soft iron 6 is made of a soft magnetic material, that is, a ferromagnetic material with very small remanence and coercive force, such as a silicon steel sheet, which can converge the magnetic field and enhance the induction precision in the induction coil 5; The two ends of the induction coil 5 are the connection ends of the magnetic induction generating unit 2 .

[0048] Other parts of this embodiment are the same as those of any one of Embodiments 1-2 above, so details are not repeated here.

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Abstract

The present invention proposes a battery matrix dead point detection system and detection method based on electromagnetic induction effect. The magnetic field generated by a single cylindrical battery will change during the operation of the car. A magnetic induction power generation unit is embedded above the battery to generate induction Voltage, after rectification, the output voltage waveform can monitor the battery status. If the battery is disconnected or damaged, no induced voltage will be generated, and it can be judged that the battery corresponding to the power generation unit is damaged. The invention not only has simple operation, but also has high sensitivity, and can timely feed back whether the battery has a dead point and the position of the dead point, thereby avoiding scrapping of the entire battery pack.

Description

technical field [0001] The invention belongs to the technical field of detection of new energy power batteries, and in particular relates to a detection system and detection method for bad points of a battery matrix based on electromagnetic induction effects. Background technique [0002] The lithium-ion battery pack used in electric vehicles will partially fail. Although the overall system will not collapse and can continue to drive, the performance of electric vehicles will be reduced, affecting the actual mileage. When some batteries in the battery matrix fail, how to detect the dead point in the battery matrix is ​​an urgent problem to be solved. Quickly find out the damaged single battery, not only easy to repair, greatly reduce the cost, but also timely repair and maintenance. Once the operating parameters are obtained in real time and a complete detection system is established, parameters such as the cruising range and power consumption per kilometer of the electric ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/48G01R31/396G01R31/382
CPCH01M10/482H01M10/488G01R31/396G01R31/382Y02E60/10
Inventor 华剑锋李立国戴锋何永清
Owner 四川赛科检测技术有限公司