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Relay fusion detecting technique for high voltage battery system of vehicle

A technology for battery systems and pre-charging relays, applied in circuit breaker testing, measuring current/voltage, testing electrical devices in transportation, etc., can solve problems such as slowly increasing load current

Inactive Publication Date: 2013-04-10
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, when the precharge relay RLY_pre is turned on after the negative relay RLY_neg is turned on, the precharge resistor 510 slowly increases the load current

Method used

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  • Relay fusion detecting technique for high voltage battery system of vehicle
  • Relay fusion detecting technique for high voltage battery system of vehicle
  • Relay fusion detecting technique for high voltage battery system of vehicle

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Embodiment Construction

[0022] Reference will now be made in detail below to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be understood that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0023] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein includes motor vehicles in general (such as including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles passenger cars), water vehicles including various boats and ships, aircraft, etc., and include hybrid vehicl...

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PUM

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Abstract

Disclosed is a technique for detecting a relay fusion in a battery system. In particular, the disclosed technique protects the battery system by being able to determine whether all of the relays in the battery system are fused without any omission. In particular, the disclosed technique alternates between two processes to ensure all relays are operating correctly.

Description

technical field [0001] The present invention relates to a relay fusing detection technology that controls current supplied to a high-voltage battery system installed in a vehicle. Background technique [0002] High voltage battery systems are installed in electric vehicles such as hybrid vehicles or electric cars. These high voltage batteries typically include relays that interrupt the current flow of the high voltage battery in order to achieve a level of safety and protect the system. These relays are normally turned on during ignition on and terminated / open during ignition off. [0003] The two contacts of the relay as described above act as a switch and may stick to each other due to overcurrent. If this happens, it is often referred to as relay fusion. When fusing occurs, normal current interruption operation of the high-voltage battery system cannot be performed, and as a result, fusing of the relay is detected during each ignition-on of the vehicle. [0004] figu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/007G01R31/3278G01R19/165G01R31/327
Inventor 黄道性朴贤秀闵敬仁
Owner HYUNDAI MOTOR CO LTD