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Pre-inspection method of battery system, battery system and battery management system

A battery system and pre-inspection technology, applied in battery/fuel cell control devices, electric vehicle charging technology, charging stations, etc., can solve problems such as vehicle charging relay adhesion, safety incidents, etc.

Active Publication Date: 2020-10-02
CONTEMPORARY AMPEREX TECH CO
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  • 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 battery system pre-inspection method, battery system and battery management system, and provide a pre-inspection method that can avoid the charging relay of the vehicle from sticking, leading to security incidents

Method used

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  • Pre-inspection method of battery system, battery system and battery management system
  • Pre-inspection method of battery system, battery system and battery management system
  • Pre-inspection method of battery system, battery system and battery management system

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Embodiment Construction

[0026] 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. The division of the following embodiments is for the convenience of description, and should not constitute any limitation to the specific implementation of the present invention, and the various embodiments can be combined and referred to each other on the premise of no contradiction.

[0027] The first embodi...

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Abstract

The embodiment of the invention relates to the technical field of electric vehicles, and discloses a pre-inspection method of a battery system, the battery system and a battery management system. Thepre-detection circuit in the battery system comprises a pre-detection resistor, a first pre-detection relay, a first voltage sampling branch and a second voltage sampling branch. The pre-inspection method comprises the following steps of in a charging pre-inspection stage, closing a charging negative electrode relay and closing a first pre-inspection relay,acquiring a first voltage through a firstvoltage sampling branch, and acquiring a second voltage through a second voltage sampling branch,judging whether pre-charging of the charging equipment is completed or not according to the first voltage and the second voltage,and if the pre-charging of the charging equipment is completed, closing the charging positive electrode relay and opening the first pre-inspection relay to enter a normal charging stage. According to the technical scheme provided by the embodiment of the invention, the problem of safety accidents caused by adhesion of the charging relay of the vehicle due to no pre-charging in the vehicle charging process is avoided.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of electric vehicles, and in particular to a battery system pre-check method, a battery system and a battery management system. Background technique [0002] As the power output circuit of electric vehicles, the power battery is realized by switching on and off a series of high-voltage devices. Whether these high-voltage devices can be turned on and off normally is very important for the normal operation of the power battery. If the power battery needs to be charged, after the power battery is connected to the charger, it can be realized by controlling the on-off of the charging relay connected between the power battery and the charger. [0003] The inventor found that there are at least the following problems in the prior art: during the charging process of the power battery, if the charging device is not pre-charged, a huge inrush current will be generated at the moment when the c...

Claims

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Application Information

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IPC IPC(8): B60L53/14B60L58/10
CPCY02T10/70Y02T10/7072Y02T90/14
Inventor 倪大军
Owner CONTEMPORARY AMPEREX TECH CO
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