KR20100064228A - Safety management method for high voltage battery and cooling structure for high voltage battery - Google Patents

Safety management method for high voltage battery and cooling structure for high voltage battery Download PDF

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KR20100064228A
KR20100064228A KR1020080122725A KR20080122725A KR20100064228A KR 20100064228 A KR20100064228 A KR 20100064228A KR 1020080122725 A KR1020080122725 A KR 1020080122725A KR 20080122725 A KR20080122725 A KR 20080122725A KR 20100064228 A KR20100064228 A KR 20100064228A
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South Korea
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high voltage
voltage battery
cooling fan
battery
cooling
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KR1020080122725A
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Korean (ko)
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KR101014127B1 (en
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김달
박진호
최제훈
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기아자동차주식회사
현대자동차주식회사
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Priority to KR1020080122725A priority Critical patent/KR101014127B1/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
    • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PURPOSE: A high voltage battery safety controlling method and a high voltage battery cooling structure related the same are provided to improve a safety of vehicles by preventing a generation of a combustible gas due to overcharging state of the high voltage battery loaded on vehicles. CONSTITUTION: An overcharging state of a high voltage battery is determined(S11). A current of all electric apparatuses related to the high voltage battery except for a cooling fan is secluded according to the overcharging state of the high voltage battery(S12). A speed of the cooling fan is controlled. The cooling pan is operated to a maximum speed in case of overcharging state of the high voltage battery in a process of grasping the state of the battery(S13). A duct between the cooling fan and the high voltage battery has a closure structure about the outside.

Description

차량용 고전압배터리 안전관리 방법 및 이와 관련된 고전압배터리 냉각구조{Safety Management Method for High Voltage Battery and Cooling Structure for High Voltage Battery}Safety management method for vehicle high voltage battery and related high voltage battery cooling structure {Safety Management Method for High Voltage Battery and Cooling Structure for High Voltage Battery}

본 발명은 차량에 탑재되는 고전압배터리에 관한 안전 기술에 관한 것으로서, 보다 상세하게는 고전압배터리의 과충전에 의해 발생되는 가연성 가스로부터 차량 및 탑승자를 보호할 수 있도록 차량을 제어하는 방법 및 그에 관련된 고전압배터리 냉각구조에 관한 기술이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety technology relating to a high voltage battery mounted on a vehicle, and more particularly, to a method for controlling a vehicle to protect a vehicle and occupants from flammable gases generated by overcharging of a high voltage battery, and a high voltage battery associated therewith. It is a technology related to a cooling structure.

최근에는 하이브리드 차량 등과 같이 차량 내에 고전압배터리를 탑재하는 경우가 있으며, 상기 고전압배터리는 과충전 상태가 되면, 내부의 전해액 분해 등의 원인으로 가연성 가스가 발생된다.Recently, a high voltage battery may be mounted in a vehicle, such as a hybrid vehicle. When the high voltage battery is in an overcharged state, combustible gas is generated due to decomposition of electrolyte inside.

만약 상기한 바와 같이 발생된 가연성 가스가 차량의 실내로 유입된 상태에서 임의의 원인으로 점화가 이루어지면 치명적인 사고를 수반하게 된다.If the combustible gas generated as described above is ignited for any cause in the state of flowing into the interior of the vehicle is accompanied by a fatal accident.

종래에는 고전압배터리가 과충전 상태임이 판단되면, 고전압배터리에 관련된 모든 전기장치의 전류를 차단하게 되는바, 도 1에 도시된 바와 같이, 고전압배터리에 과충전이 발생되면, 고전압배터리를 이루고 있는 배터리셀들이 부풀기 시작하고, 이에 의해 고전압배터리의 내부 압력이 증가하게 되며, 이 상황이 더 진행되면, 배터리셀 및 셀커버에 변형이 발생되고 배터리셀간 연결부에 장력이 발생되어 배터리셀간 연결부가 파단되게 되는 바, 고전압배터리에 관련한 전원을 차단하여 더 이상의 과충전을 방지함으로써, 안전성을 확보하도록 하는 것이다.Conventionally, when it is determined that the high voltage battery is in an overcharge state, the current of all electric devices related to the high voltage battery is cut off. As shown in FIG. 1, when overcharge occurs in the high voltage battery, the battery cells forming the high voltage battery are The internal pressure of the high voltage battery increases due to the swelling, and if the situation further proceeds, deformation occurs in the battery cell and the cell cover, and tension is generated in the connection between the battery cells, causing the connection between the battery cells to break. In order to ensure safety by cutting off the power supply associated with the high voltage battery and preventing further overcharging.

그러나, 도 2에 도시된 바와 같은 종래의 고전압배터리 냉각구조에서는 상기 전원 차단시 냉각팬(500)의 전류까지 차단하게 되어, 상기 고전압배터리(502)에서 발생된 가연성 가스는 상기 고전압배터리(502)와 냉각팬(500) 사이의 통로(504)가 밀폐구조가 아니므로 이를 통해서 배출되거나, 상기 고전압배터리(502)의 냉각을 위해 냉각용 공기가 유입되던 경로를 역류하여 차량의 실내로 누출되게 된다.However, in the conventional high voltage battery cooling structure as shown in FIG. 2, when the power is cut off, the current of the cooling fan 500 is blocked, so that the combustible gas generated from the high voltage battery 502 is the high voltage battery 502. Since the passage 504 between the cooling fan 500 and the cooling fan 500 is not a sealed structure, the passage 504 is discharged through it, or the cooling air 500 flows backward through the path where the cooling air flows to cool the high voltage battery 502 and leaks into the interior of the vehicle. .

참고로, 도 2에서 실선 화살표는 정상적인 경우에 냉각풍에 의해 고전압배터리(502)가 냉각되는 상황을 표시하고 있고, 점선 화살표는 과충전 발생시 고전압배터리(502)에 관련된 모든 전기장치의 전원 차단에 따라 냉각팬(500)까지 정지된 상태에서 상기 고전압배터리(502)에서 발생된 가연성 가스가 실내로 누출되는 과정을 설명한 것이다.For reference, in FIG. 2, a solid arrow indicates a situation in which the high voltage battery 502 is cooled by a cooling wind in a normal case, and a dotted arrow indicates power off of all electric devices related to the high voltage battery 502 when an overcharge occurs. The process of leaking the combustible gas generated from the high voltage battery 502 to the room in the stopped state to the cooling fan 500 will be described.

상기와 같이 가연성 가스가 실내로 유입되는 상황을 그대로 방치하게 되면, 탑승자와 차량의 안전을 보장하기 어려우므로 적절한 조치가 필요하다.If the situation in which the combustible gas flows into the room as it is left as it is, it is difficult to ensure the safety of the occupants and the vehicle, it is necessary to take appropriate measures.

본 발명은 상기한 바와 같은 필요성에 의해 안출된 것으로서, 차량에 탑재된 고전압배터리가 임의의 원인에 의해 과충전 상태로 되어, 그 내부로부터 가연성가 스가 발생하는 경우, 차량 및 탑승자를 보호할 수 있는 적절한 조치를 취할 수 있도록 하여 차량의 안전성을 향상시킬 수 있도록 한 차량용 차량용 고전압배터리 안전관리 방법 및 이와 관련된 고전압배터리 냉각구조를 제공함에 그 목적이 있다.The present invention has been made in accordance with the necessity as described above, the high-voltage battery mounted on the vehicle is in an overcharge state by any cause, the appropriate measures to protect the vehicle and occupants in case of flammable gas from the inside It is an object of the present invention to provide a vehicle high voltage battery safety management method and a high voltage battery cooling structure associated with the vehicle to improve the safety of the vehicle.

상기한 바와 같은 목적을 달성하기 위하여 안출된 본 발명 차량용 고전압배터리 안전관리 방법은The high voltage battery safety management method of the present invention devised to achieve the object as described above

고전압배터리가 과충전 상태인지를 판단하는 배터리상태파악단계와;A battery state determining step of determining whether the high voltage battery is in an overcharge state;

과충전 상태인 경우, 냉각팬을 제외한 상기 고전압배터리에 관련된 모든 전기장치의 전류를 차단하는 전류차단단계와;A current blocking step of cutting off currents of all electric devices related to the high voltage battery except the cooling fan in an overcharge state;

상기 냉각팬의 속도를 조절하는 냉각팬속도조절단계Cooling fan speed control step of adjusting the speed of the cooling fan

를 포함하여 구성된 것을 특징으로 한다.Characterized in that configured to include.

상기 냉각팬속도조절단계에서는, 상기 배터리상태파악단계 수행결과 상기 고전압배터리가 과충전 상태인 경우, 상기 냉각팬을 최고 속도로 동작시키도록 구성할 수 있다.In the cooling fan speed adjusting step, when the high voltage battery is in an overcharge state as a result of performing the battery state determining step, the cooling fan may be configured to operate at the maximum speed.

또한, 본 발명에 따른 고전압배터리 냉각구조는In addition, the high voltage battery cooling structure according to the present invention

공기를 흡입하여 고전압배터리를 이루는 배터리셀들 사이를 통과시킴으로써 고전압배터리를 냉각시키는 고전압배터리 냉각구조에 있어서,In the high voltage battery cooling structure for cooling the high voltage battery by passing air between the battery cells forming a high voltage battery,

상기 고전압배터리와 냉각팬 사이의 덕트는 외부에 대해 밀폐구조를 가지도 록 형성된 것을 특징으로 한다.The duct between the high voltage battery and the cooling fan is characterized in that it is formed to have a sealed structure to the outside.

본 발명은 차량에 탑재된 고전압배터리가 임의의 원인에 의해 과충전 상태로 되어, 그 내부로부터 가연성가스가 발생하는 경우, 차량 및 탑승자를 보호할 수 있는 적절한 조치를 취할 수 있도록 하여 차량의 안전성을 향상시킬 수 있도록 한다.According to the present invention, when a high voltage battery mounted on a vehicle is in an overcharge state due to any cause and flammable gas is generated from the inside thereof, it is possible to take appropriate measures to protect the vehicle and the occupant, thereby improving the safety of the vehicle. Make it work.

도 3를 참조하면, 본 발명 실시예의 차량용 고전압배터리 안전관리 방법은 고전압배터리가 과충전 상태인지를 판단하는 배터리상태파악단계(S11)와; 과충전 상태인 경우, 냉각팬을 제외한 상기 고전압배터리에 관련된 모든 전기장치의 전류를 차단하는 전류차단단계(S12)와; 상기 냉각팬의 속도를 조절하는 냉각팬속도조절단계(S13)를 포함하여 구성된다.Referring to FIG. 3, the vehicle high voltage battery safety management method according to an embodiment of the present invention includes: a battery state determining step S11 of determining whether the high voltage battery is in an overcharge state; A current blocking step (S12) of cutting off currents of all electric devices related to the high voltage battery except the cooling fan in the overcharge state; It comprises a cooling fan speed control step (S13) for adjusting the speed of the cooling fan.

본 실시예에서, 상기 냉각팬속도조절단계(S13)에서는, 상기 배터리상태파악단계 수행결과 상기 고전압배터리가 과충전 상태인 경우, 상기 냉각팬을 최고 속도로 동작시키도록 구성하였다.In the present embodiment, in the cooling fan speed adjusting step (S13), when the high voltage battery is in the overcharge state as a result of performing the battery state determining step, the cooling fan is configured to operate at the maximum speed.

즉, 종래에는 고전압배터리가 과충전 상태라고 파악되면, 상기 냉각팬을 포함하여 고전압배터리와 관련된 모든 전기장치에 전류를 차단하는 것으로 과충전에 대한 대책이 이루어졌으나, 이와 같은 조치만으로는 이미 과충전에 의해 고전압배터리에서 발생된 가연성 가스가 미처 차량의 외부로 배출되지 못한 상태에서 냉각 팬이 정지됨으로 인해 차량의 내부로 누출되어 발화의 위험성이 있었으나, 본 발명에서는 상기 냉각팬만은 오히려 최대의 전류를 공급하여 최고 속도로 회전시킴으로써, 신속하게 가연성 가스를 차량 외부로 배출할 수 있도록 한 것이다.That is, in the related art, when a high voltage battery is determined to be in an overcharge state, a countermeasure against overcharge has been made by cutting off current to all electric devices related to the high voltage battery including the cooling fan. However, only such measures have already been performed to overcharge the high voltage battery. In the present invention, there is a risk of ignition due to leakage of the inside of the vehicle due to the stop of the cooling fan when the flammable gas generated in the air is not discharged to the outside of the vehicle. By rotating at a speed, it is possible to quickly discharge flammable gas to the outside of the vehicle.

상기와 같이 고전압배터리의 과충전에 대한 적극적이고 능동적인 대책은 가연성 가스의 차 실내 유입에 따른 위험성을 배제하도록 하여, 차량의 안전성을 크게 향상시킬 수 있다.As described above, active and proactive measures for overcharging the high voltage battery can eliminate the risks associated with the inflow of combustible gas into the car, thereby greatly improving the safety of the vehicle.

한편, 도 4은 본 발명에 따른 고전압배터리 냉각구조를 도시한 것으로서, 상기 고전압배터리(7)와 냉각팬(9) 사이의 덕트(11)는 외부에 대해 밀폐구조를 가지도록 형성된 것에 특징이 있다.On the other hand, Figure 4 shows a high voltage battery cooling structure according to the present invention, the duct 11 between the high voltage battery 7 and the cooling fan 9 is characterized in that it is formed to have a sealed structure to the outside. .

즉, 종래의 고전압배터리(7) 냉각구조는 상기 고전압배터리(7)를 이루는 배터리셀들과 상기 냉각팬(9) 사이의 덕트(11)가 특별히 밀폐구조를 가지도록 구성되어 있지 않아서, 이곳을 통해 상기 고전압배터리(7)에서 발생되는 가연성 가스가 실내로 누출될 염려가 있었으나, 본 발명과 같이 상기 고전압배터리(7)와 냉각팬(9) 사이의 덕트(11)를 완전 밀폐형 구조로 하고, 상기와 같이 고전압배터리(7)의 과충전이 판단되면, 상기 냉각팬(9)을 최고 속도로 회전시켜 발생된 가연성 가스를 모두 외부로 배출시킬 수 있도록 함으로써, 차량의 안전성을 더욱 향상시킬 수 있도록 한 것이다.That is, in the conventional high voltage battery 7 cooling structure, the duct 11 between the battery cells constituting the high voltage battery 7 and the cooling fan 9 is not particularly configured to have a sealed structure. There was a risk that the combustible gas generated in the high voltage battery 7 leaks through the room, but as shown in the present invention, the duct 11 between the high voltage battery 7 and the cooling fan 9 is completely sealed. When the overcharge of the high voltage battery (7) is determined as described above, by rotating the cooling fan (9) at the highest speed to discharge all the combustible gas generated to the outside, it is possible to further improve the safety of the vehicle will be.

도 1은 종래 기술에 의한 차량용 고전압배터리의 과충전에 따른 변화와 대책을 설명한 순서도,1 is a flowchart illustrating a change and a countermeasure due to overcharging of a high voltage battery for a vehicle according to the prior art;

도 2는 종래의 고전압배터리 냉각구조의 문제점을 설명한 도면,2 is a view illustrating a problem of a conventional high voltage battery cooling structure;

도 3은 본 발명에 따른 차량용 고전압배터리 안전관리 방법의 실시예를 도시한 순서도,3 is a flowchart showing an embodiment of a vehicle high voltage battery safety management method according to the present invention;

도 4는 본 발명에 따른 고전압배터리 냉각구조를 설명한 도면이다.4 is a view illustrating a high voltage battery cooling structure according to the present invention.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

S11; 배터리상태파악단계 S12; 전류차단단계S11; Battery state determining step S12; Current interruption stage

S13; 냉각팬속도조절단계 7; 고전압배터리S13; Cooling fan speed control step 7; High voltage battery

9; 냉각팬 11; 덕트9; Cooling fan 11; duct

Claims (3)

고전압배터리가 과충전 상태인지를 판단하는 배터리상태파악단계와;A battery state determining step of determining whether the high voltage battery is in an overcharge state; 과충전 상태인 경우, 냉각팬을 제외한 상기 고전압배터리에 관련된 모든 전기장치의 전류를 차단하는 전류차단단계와;A current blocking step of cutting off currents of all electric devices related to the high voltage battery except the cooling fan in an overcharge state; 상기 냉각팬의 속도를 조절하는 냉각팬속도조절단계Cooling fan speed control step of adjusting the speed of the cooling fan 를 포함하여 구성된 것을 특징으로 하는 차량용 고전압배터리 안전관리 방법.Vehicle high voltage battery safety management method comprising a. 청구항 1에 있어서,The method according to claim 1, 상기 냉각팬속도조절단계에서는, 상기 배터리상태파악단계 수행결과 상기 고전압배터리가 과충전 상태인 경우, 상기 냉각팬을 최고 속도로 동작시키는 것In the cooling fan speed adjusting step, when the high voltage battery is in an overcharged state as a result of performing the battery state determining step, operating the cooling fan at the maximum speed. 을 특징으로 하는 차량용 고전압배터리 안전관리 방법.Vehicle high voltage battery safety management method characterized in that. 공기를 흡입하여 고전압배터리를 이루는 배터리셀들 사이를 통과시킴으로써 고전압배터리를 냉각시키는 고전압배터리 냉각구조에 있어서,In the high voltage battery cooling structure for cooling the high voltage battery by passing air between the battery cells forming a high voltage battery, 상기 고전압배터리와 냉각팬 사이의 덕트는 외부에 대해 밀폐구조를 가지도록 형성된 것The duct between the high voltage battery and the cooling fan is formed to have a sealed structure to the outside 을 특징으로 하는 고전압배터리 냉각구조.High voltage battery cooling structure, characterized in that.
KR1020080122725A 2008-12-04 2008-12-04 Safety Management Method for High Voltage Battery KR101014127B1 (en)

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KR101363133B1 (en) * 2012-08-29 2014-02-24 세종공업 주식회사 Control system of hybrid vehicle for protecting battery and control method thereof.

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KR100471250B1 (en) * 2002-08-23 2005-03-10 현대자동차주식회사 Cooling fan controlling device of electric vehicle and method thereof

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Publication number Priority date Publication date Assignee Title
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