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Battery system to prevent abnormal voltages at output stage and control method of same

A battery system, abnormal voltage technology, applied in different directions of battery charging, charge balancing circuit, battery overvoltage protection, etc., can solve the problem of the voltage of the battery output terminal being activated

Pending Publication Date: 2022-01-25
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, in the existing battery system that disconnects the relay switch by fuse opening or CPU control, when a high external current is applied, even when the relay switch is disconnected by the CPU, there will be An unexpected non-ideal closed circuit (closed loop) is formed in the circuit, so there will be a problem that the voltage at the battery output terminal is activated.

Method used

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  • Battery system to prevent abnormal voltages at output stage and control method of same
  • Battery system to prevent abnormal voltages at output stage and control method of same
  • Battery system to prevent abnormal voltages at output stage and control method of same

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Embodiment Construction

[0025] From the following detailed description of the embodiments with reference to the accompanying drawings, the advantages, features and implementations thereof will be more clear. However, this disclosure may be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. Also, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art to which this disclosure pertains. And, the present disclosure is limited only by the scope of the claims. Meanwhile, terms used herein are for the purpose of describing the embodiments, not for limiting the present disclosure. As used herein, singular forms also include plural forms unless the context clearly dictates otherwise. It should be noted that the term "comprises" and / or "comprises" as used herein does not exclude the presence or presence of one or more other components, ste...

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Abstract

A system for preventing an abnormal voltage of a battery at an output stage includes a battery management system (BMS), which includes: a plurality of voltage sensors configured to detect first voltages of a plurality of battery cells; a relay switch configured to apply the first voltages to an electrical device according to a first control signal from the BMS; an automatic cut-off switch configured to cut off power applied from the plurality of battery cells according to a first control signal from the BMS; a high-voltage interlock switch connected to the automatic cut-off switch and configured to operate at a second voltage that is a preset voltage or more; an active voltage switch configured to operate at a third voltage transmitted through the automatic shut-off switch to control the relay switch; and a controller configured to, in response to detecting a voltage, which is higher than a threshold voltage, among the first voltages by the voltage sensor, provide a cut-off control signal to the relay switch.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2020-0091144 filed on July 22, 2020, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to a battery system capable of preventing abnormal voltage at an output terminal, and in particular to a battery system capable of preventing abnormal voltage at the output terminal to protect the output terminal when a battery cell of an automobile battery system is short-circuited. Background technique [0004] Such as figure 1 As shown, when a battery short circuit occurs in an existing battery system, the method of disconnecting the closed-circuit connection is to use a mechanical method to disconnect the internal high-voltage fuses provided between the battery cells, thereby cutting off the connection in the battery. [0005] Alternatively, there is a method in whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0031H02J7/0047H02J7/00308H02J7/0048H02J7/0016H02H7/18G01R19/16542G01R31/382
Inventor 朴呼泳
Owner HYUNDAI MOBIS CO LTD