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A detection method of an insulation detection circuit and a battery management system

A technology of battery management system and detection circuit, which is applied in the field of detection to reduce the excessive deviation of insulation detection accuracy, reduce the risk of electric shock to the human body, and improve safety performance

Active Publication Date: 2021-09-28
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a detection method for an insulation detection circuit and a battery management system, so that it is possible to detect whether the insulation detection module is faulty, and reduce the problem of excessive deviation of insulation detection accuracy caused by the deviation of each device in the insulation detection circuit , improve the safety performance of the car

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  • A detection method of an insulation detection circuit and a battery management system
  • A detection method of an insulation detection circuit and a battery management system
  • A detection method of an insulation detection circuit and a battery management system

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, various implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in this application can also be realized.

[0029] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application all include direct and indirect connection...

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Abstract

The embodiment of the invention relates to the detection field, and discloses a detection method of an insulation detection circuit and a battery management system. In some embodiments of the present application, the detection method of the insulation detection circuit includes: obtaining the first electrical signal detected by the second detection module when the first switch and the second switch are closed and the third switch is open; according to the first An electrical signal, and a voltage reference value between the positive pole of the battery pack and the negative pole of the battery pack, to determine whether the insulation detection circuit is faulty; or, obtain the second electrical signal detected by the first detection module and the second electrical signal detected by the third detection module According to the second electrical signal and the third electrical signal, it is judged whether the insulation detection circuit is faulty, so that the fault of the insulation detection circuit can be found in time.

Description

technical field [0001] The embodiments of the present invention relate to the detection field, and in particular to a detection method of an insulation detection circuit and a battery management system. Background technique [0002] The replacement of fuel vehicles by electric vehicles has become the development trend of the automobile industry. The mileage, service life and safety of battery packs are all very important for the use of electric vehicles. The power battery pack is one of the key components of electric vehicles, and its high-voltage safety must be one of the primary considerations for the power battery system. Therefore, testing the insulation performance of electric vehicles is an essential part of the design. [0003] However, the inventors have found that there are at least the following problems in the prior art: the insulation detection module is prone to malfunction and cannot accurately detect the insulation resistance. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00B60L58/10
CPCG01R35/00B60L58/10Y02T10/70G01R31/52B60L3/0046B60L3/0069B60L2240/547B60L2240/549Y02E60/10G01R31/382G01R27/025G01R31/14G01R31/3648H01M10/425H01M2010/4271H01M2220/20
Inventor 李盟刘昌鑑叶伏明周芳杰王连松颜利丹
Owner CONTEMPORARY AMPEREX TECH CO