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Charging detection method and charging detection device

A technology for charging detection and current detection, which is applied in battery circuit devices, circuit devices, transportation and packaging to achieve the effect of improving safety

Active Publication Date: 2019-10-15
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, after multiple relays are connected in parallel, the voltages at the front and rear ends of each relay are the same, so it is no longer possible to diagnose relay faults by detecting the voltages at the front and rear ends of the relays.

Method used

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  • Charging detection method and charging detection device
  • Charging detection method and charging detection device
  • Charging detection method and charging detection device

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Embodiment Construction

[0026] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] It should be clear that 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 creative efforts fall within the protection scope of the present invention.

[0028] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0029] figure 1 A flow chart of a charging dete...

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Abstract

A charging detection method and a charging detection device (400). The charging detection method comprises: acquiring, in a charging detection state, the branch current of each charging branch of a charging system (102); and determining, according to the capacity integral of the branch current, the on / off state of the charging branch corresponding to the branch current (104). The technical solution can accurately identify the open-circuit fault of the relay on a certain branch of the charging system so as to send an alarm to a vehicle and a charger in time and stop charging, preventing the charging system from charging with high current for a long period of time when a certain branch is in an open-circuit state, improving the safety of charging.

Description

【Technical field】 [0001] The invention relates to the technical field of batteries, in particular to a charging detection method and a charging detection device. 【Background technique】 [0002] At present, the charging system often uses a single relay to charge, and when performing open circuit detection on a single relay, the purpose of relay fault diagnosis can be achieved by detecting the voltage at the front and rear ends of the relay. [0003] However, for a charging system that requires fast charging, in order to obtain a shorter charging time, it is necessary to continuously increase the charging current, so it is necessary to use multiple relays in parallel to meet the requirements for increasing the charging current. However, since multiple relays are connected in parallel, the front and rear end voltages of each relay are the same, so relay fault diagnosis can no longer be performed by detecting the front and rear end voltages of the relays. [0004] Therefore, ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 颜昱张迪
Owner CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LTD NINGDE CITY
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