KR-102964412-B1 - EMERGENCY POWER MANAGEMENT SYSTEM AND ITS CONTROLLING METHOD FOR MOBILITY

KR102964412B1KR 102964412 B1KR102964412 B1KR 102964412B1KR-102964412-B1

Abstract

According to the present invention, an emergency power management system for mobility is introduced, comprising: a fuse device connected to a high-voltage battery, wherein a main fuse and a sub-fuse are respectively provided, and a main circuit and a sub-circuit are provided that are connected in parallel with each other; a pyroswitch provided between the main circuit and the sub-circuit, which normally connects the main circuit and disconnects the main circuit and connects the sub-circuit during emergency operation; a judgment unit that determines an abnormality of the main fuse based on the current applied from the high-voltage battery or the voltage across the main fuse; and a control unit that operates the pyroswitch when the main fuse is abnormal.

Inventors

전윤철
전현우
이희광
조현기
김귀택
홍현석
정우석

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260513
Application Date: 20201222

Claims (11)

A fuse device connected to a high-voltage battery, having a main fuse and a sub-fuse respectively, and having a main circuit and a sub-circuit connected in parallel; A pyroswitch provided between the main circuit and the sub-circuit, which normally connects the main circuit and disconnects the main circuit and connects the sub-circuit in the event of emergency operation; A judgment unit that determines an abnormality in the main fuse based on the current applied from the high-voltage battery or the voltage across the main fuse; and A control unit that operates a pyroswitch in the event of a main fuse malfunction; including The pyroswitch includes a first connection part connected to a main circuit, a second connection part connected to a sub-circuit, a moving part that is normally connected to the main circuit and moves to short-circuit the main circuit and connect to the sub-circuit in an emergency, an operating part that moves the moving part in an emergency according to the control of a control part, and a busbar part connected to the moving part and connected to the main circuit or the sub-circuit according to the movement of the moving part. The pyroswitch includes a cylinder part that connects the moving part to a first connecting part or a second connecting part depending on the position of the moving part, and the moving part moves internally. An emergency power management system for mobility characterized by the moving part moving inside the cylinder part by the explosive charge of the operating part.
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In claim 1, A voltage measuring device connected to both ends of the main fuse to measure the voltage difference between the two ends of the main fuse; further comprising An emergency power management system for mobility characterized by a judgment unit that determines an abnormality in the main fuse if the voltage difference measured by a voltage measuring device is greater than or equal to a preset reference value.
In claim 1, It further includes a current measuring device connected to the main circuit to measure the current of the main circuit, and An emergency power management system for mobility characterized by a judgment unit that determines an abnormality in the main fuse based on the current measured by a current measuring device.
In claim 5, It further includes a calculation unit that calculates the durability degradation of the main fuse based on the current measured by a current measuring device, and An emergency power management system for mobility characterized by a judgment unit that determines an abnormality in the main fuse if the durability degradation calculated by the calculation unit is greater than or equal to a preset value.
In claim 5, An emergency power management system for mobility characterized by a judgment unit being connected to an external system, and receiving the degree of durability degradation calculated from the external system when computation is impossible due to exceeding the data capacity of the computation unit.
In claim 1, The mobility is air mobility, and the high-voltage battery supplies power to the motors of the air mobility propellers through relays and inverters, and An emergency power management system for mobility characterized by a control unit that activates a pyroswitch when the main fuse malfunctions while the air mobility is flying, and generates a warning signal when the main fuse malfunctions while the air mobility is driving.
A control method for an emergency power management system of a mobility according to claim 1, A determination step for determining an abnormality in the main fuse based on the current applied from the high-voltage battery or the voltage across the main fuse; and A control step for controlling the operation of a pyroswitch when an abnormality in the main fuse is determined in the judgment step; and The pyroswitch includes a first connection part connected to a main circuit, a second connection part connected to a sub-circuit, a moving part that is normally connected to the main circuit and moves to short-circuit the main circuit and connect to the sub-circuit in an emergency, an operating part that moves the moving part in an emergency according to the control of a control part, and a busbar part connected to the moving part and connected to the main circuit or the sub-circuit according to the movement of the moving part. The pyroswitch includes a cylinder part that connects the moving part to a first connecting part or a second connecting part depending on the position of the moving part, and the moving part moves internally. A control method for an emergency power management system of mobility, characterized in that the moving part moves by the explosive charge of the operating part inside the cylinder part.
In claim 9, A voltage measurement step for measuring the difference in voltage across the main fuse prior to the judgment step; and It further includes a voltage judgment step for determining whether the voltage difference measured in the voltage measurement step is greater than or equal to a preset reference value; and A control method for an emergency power management system of a mobility device, characterized in that the judgment step determines an abnormality in the main fuse when it is determined that the voltage difference is greater than or equal to a preset reference value in the voltage judgment step.
In claim 9, A current measurement step for measuring the applied current of the main fuse; A calculation step for calculating the durability degradation of the main fuse based on the current measured in the current measurement step; and It further includes a degradation determination step for determining whether the durability degradation calculated in the calculation step is greater than or equal to a preset value, and A control method for an emergency power management system of a mobility device, characterized in that the judgment step determines the abnormality of the main fuse when the durability degradation level is determined to be greater than or equal to a preset value in the degradation level judgment step.

Description

Emergency Power Management System for Mobility and Method for Controlling the Same The present invention relates to an emergency power management system for mobility and a control method thereof. Specifically, it relates to a technology that enables the mobility to operate continuously without stopping by installing a plurality of fuses and connecting the circuit to a sub-fuse when a main fuse malfunctions. Generally, in mobility applications utilizing electrical energy from high-voltage batteries, fuses applied to the high-voltage battery system will fail due to fatigue if the current flowing is below a critical threshold and occurs repeatedly. Since the driver cannot detect the progression of fuse degradation in the battery system applied to conventional mobility, if a fuse blows while driving, the battery power supplied to the motor is cut off, making operation impossible and potentially causing safety issues. Accordingly, there has been a demand for technology that monitors the rupture or deterioration status of fuses and connects to a sub-fuse to assist in the event of a main fuse rupture. The matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. FIG. 1 is a configuration diagram of an emergency power system for mobility according to an embodiment of the present invention. FIG. 2 is a diagram illustrating the operation of a pyroswitch of an emergency power system of a mobility according to an embodiment of the present invention. FIG. 3 is a flowchart of a control method for an emergency power system of a mobility according to an embodiment of the present invention. Specific structural or functional descriptions of the embodiments of the present invention disclosed in this specification or application are merely illustrative for the purpose of explaining embodiments according to the present invention, and embodiments according to the present invention may be implemented in various forms and should not be interpreted as being limited to the embodiments described in this specification or application. Since embodiments according to the present invention may be subject to various modifications and may take various forms, specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, this is not intended to limit embodiments according to the concept of the present invention to specific disclosed forms, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. Terms such as "first" and/or "second" may be used to describe various components, but said components should not be limited by said terms. For the sole purpose of distinguishing one component from another, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. Conversely, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions describing the relationship between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way. The terms used herein are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to specify the existence of the implemented features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this specification. The present invention will be described in detail below by explaining preferred embodiments of the invent