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An insulating circuit, battery pack leakage detection method and hardware detection method

An insulation circuit and leakage detection technology, which is applied in the field of battery leakage detection, insulation circuit, and hardware detection, can solve the problems that the hardware detection in the insulation circuit cannot be realized, and the leakage point of the battery group cannot be detected.

Active Publication Date: 2022-02-11
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide an insulating circuit, a battery pack leakage detection method, and a hardware detection method to solve the problems in the prior art that the specific leakage point in the battery pack cannot be detected, and the inability to detect the leakage in the insulating circuit Problems with hardware detection

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  • An insulating circuit, battery pack leakage detection method and hardware detection method
  • An insulating circuit, battery pack leakage detection method and hardware detection method
  • An insulating circuit, battery pack leakage detection method and hardware detection method

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] First of all, the term "and" in the embodiment of the present invention is just a kind of relationship describing the relationship between related objects, which means that there can be three kinds of relationships, for example, A and B, which can mean: A exists alone, A and B exist simultaneously, and A and B exist alone. There are three cases of B. In addition, the character " / " in this article generally indicates that the contextual o...

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Abstract

The invention relates to the technical field of batteries, in particular to an insulating circuit, a battery pack leakage detection method and a hardware detection method. The method is as follows: when the main positive relay, the pre-charging relay, the first switch and the second switch are disconnected, obtain the sampled voltage value at both ends of the second sampling resistor; based on the sampled voltage value, the resistance value of the second sampled resistor and the second Calculate the short-circuit voltage value of the battery pack, wherein the battery pack is composed of multiple batteries in series; based on the short-circuit voltage value, the connection sequence of each battery in the battery pack and the voltage value of each battery, determine the leakage in the battery pack Battery. Control the main positive relay and the pre-charge relay so that the main positive relay is in a closed state; when the first switch and the second switch are disconnected, respectively obtain the sampling voltage values ​​at both ends of the first sampling resistor and the second sampling resistor; based on the first sampling The resistance value of the resistor and the second sampling resistor, the sampling voltage value and the voltage value of the battery pack are used to determine whether the insulation circuit hardware is abnormal.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to an insulating circuit, a battery pack leakage detection method and a hardware detection method. Background technique [0002] With the continuous development of battery technology, there are more and more types of batteries, and the application of batteries in the field of energy storage is also becoming more and more extensive. At present, the new energy industry is developing rapidly. New energy vehicles based on the power battery pack as the energy source are the hot development direction of major domestic and foreign automakers. They are actively and continuously developing and trying to solve various problems in the application of power battery packs. As the core energy storage component, the power battery has always been the focus of attention on its safety and reliability. The voltage value of the power battery pack used in vehicles is generally above 300V, and the disc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/385G01R31/396G01R31/28G01R31/327
CPCG01R31/2843G01R31/327
Inventor 陈建豪
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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