WO2014196808A1 - Dispositif de sécurité de batterie - Google Patents

Dispositif de sécurité de batterie Download PDF

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Publication number
WO2014196808A1
WO2014196808A1 PCT/KR2014/004967 KR2014004967W WO2014196808A1 WO 2014196808 A1 WO2014196808 A1 WO 2014196808A1 KR 2014004967 W KR2014004967 W KR 2014004967W WO 2014196808 A1 WO2014196808 A1 WO 2014196808A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
vehicle
safety device
collision
cooling
Prior art date
Application number
PCT/KR2014/004967
Other languages
English (en)
Korean (ko)
Inventor
권동근
Original Assignee
주식회사 엘지화학
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to CN201480010815.6A priority Critical patent/CN105008184B/zh
Priority to US14/760,942 priority patent/US9343782B2/en
Priority to JP2016518271A priority patent/JP6103332B2/ja
Priority claimed from KR1020140067788A external-priority patent/KR101539695B1/ko
Publication of WO2014196808A1 publication Critical patent/WO2014196808A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions

Definitions

  • the present invention relates to a battery safety device, and more particularly, to a device for preventing the explosion or explosion of the battery when a vehicle crash.
  • the high-power, high-capacity batteries installed in a car are at risk of explosion from an accident such as a car crash. That is, there is a possibility that a secondary accident in which the battery ignites or explodes from the collision as well as the direct damage due to the vehicle collision may occur.
  • electric vehicles or hybrid vehicles use a high-power, large-capacity battery, so the risk of such ignition or explosion may be greater. Accordingly, the battery-related technical field has been proposed to prevent the explosion of the battery in the event of a vehicle crash.
  • Korean Patent Publication No. 10-2012-0042986 discloses a vehicle battery safety system.
  • the vehicle battery safety system mainly activates a battery safety device when a collision is detected in a vehicle.
  • the battery safety device disclosed in the prior art discloses i) a battery cooling device using compressed gas, ii) a device for electrically separating the battery, and iii) a discharge resistance.
  • the cooling device using the compressed gas requires a separate gas tank and has a disadvantage in that the gas pressure must be checked periodically. Also, depending on the capacity of the gas tank, the stored compressed gas amount may not be sufficiently cooled.
  • the battery separation device has a disadvantage in that the vehicle cannot be controlled after the crash by completely removing the battery.
  • the discharge resistor requires a time for discharging the battery, and in the meantime, the battery cannot be cooled.
  • a battery safety system using a conventional cooling device may explode during cooling when the battery maintains a high output and a high capacity, and a battery safety system using discharge resistors also prevents rapid cooling, causing the battery to ignite or explode. There is a problem that can be maintained.
  • the present invention has been made in view of the prior art as described above, the object of the present invention is to provide a battery safety device that can discharge the battery while cooling the battery when a safety accident occurs in the vehicle.
  • the voltage sensor unit for measuring the voltage of the battery mounted on the vehicle;
  • a cooling device connected to both ends of the battery to receive power from the battery to cool the battery;
  • a switch unit connected between the fan and the battery and turned on or off by a control signal;
  • a controller for outputting a control signal to turn on the switch unit when the collision value input from the outside is equal to or greater than the preset reference collision value and the voltage value received from the voltage sensor unit is equal to or greater than the preset reference voltage value. It is done.
  • the cooling device may cool the battery and discharge the battery.
  • the said cooling apparatus can be equipped with a cooling fan.
  • the cooling device may also include a thermoelectric element.
  • thermoelectric element is preferably disposed so that the side that emits cold air toward the battery.
  • the collision value input from the outside may be output from the vehicle control apparatus.
  • the collision value input from the outside may be output from a collision detection sensor attached to the vehicle.
  • the collision value input from the outside may be output from the airbag operation sensor attached to the vehicle.
  • the controller may turn off the switch unit when the voltage value received from the voltage sensor unit is less than or equal to a preset reference voltage value after turning on the switch unit.
  • the battery safety device may further include a memory unit configured to store the reference collision value and the reference voltage value.
  • the cooling device is connected to both ends of the battery and is driven by being supplied with power from the battery, thereby not only cooling the battery but also discharging the battery. You can play a role at the same time. Therefore, the present invention can prevent ignition or explosion through cooling, lower the output and / or charge capacity of the battery to prevent the risk of ignition or explosion, and minimize the risk even if ignition or explosion occurs.
  • the controller does not operate the cooling device by determining that the battery is not a dangerous situation when the output and / or the charging capacity is less than a predetermined standard. Therefore, it is possible to prevent the safety device from operating unnecessarily.
  • the controller stops the operation of the cooling apparatus when the output and / or charge capacity of the battery is less than a predetermined standard after operating the cooling apparatus so that the battery is no longer consumed.
  • the vehicle user may control the vehicle using the remaining battery even after the accident. Therefore, follow-up can be easily performed after the vehicle accident.
  • FIG. 1 is a block diagram schematically illustrating a configuration of a battery safety device according to an embodiment of the present invention.
  • FIG. 2 is a view showing the configuration of a cooling device according to an embodiment of the present invention.
  • FIG. 1 is a block diagram schematically illustrating a configuration of a battery safety device according to an embodiment of the present invention.
  • a battery safety device 10 includes a voltage sensor unit 4, a switch unit 5, a control unit 2, and a cooling unit 6.
  • the voltage sensor unit 4 measures the voltage of the battery 3 mounted in the vehicle and outputs a voltage measurement value to the controller 2.
  • the battery 3 includes one or more secondary battery cells, and the type of the secondary battery cells is not particularly limited.
  • Each secondary battery cell may be composed of a lithium ion battery, a lithium polymer battery, a nickel cadmium battery, a nickel hydride battery, a nickel zinc battery, and the like, which can be recharged and require a charge or discharge voltage.
  • the number of secondary battery cells included in the battery 3 may be variously set according to the required output voltage or charge and discharge capacity.
  • the present invention is not limited by the type of secondary battery cell, output voltage, charge capacity, and the like.
  • the present invention is not limited by the method of connecting the secondary battery cells.
  • the voltage measurement value measured by the voltage sensor unit 4 may be used as a parameter for estimating the output and / or state of charge (SOC) of the battery 3.
  • SOC state of charge
  • the voltage of the battery 3 and the output and charging capacity of the battery 3 have a proportional relationship, and various techniques for estimating the output and charging capacity of the battery 3 using the voltage of the battery 3 are available.
  • the output and the charge capacity of the battery 3 may be estimated using a method of referring to a look-up table in which the output and the charge capacity corresponding to the voltage of the battery 3 are recorded.
  • the cooling device 6 is electrically connected to both ends of the battery 3 to receive driving power from the battery 3.
  • the cooling device 6 may be driven by receiving power from the battery 3 to cool the battery 3. That is, the cooling device 6 may be electrically connected to the battery 3 to be cooled, thereby cooling the battery 3 and simultaneously discharging the battery 3.
  • the cooling device 6 may be provided with a cooling fan.
  • the cooling fan may be configured to supply cooling air to the battery 3, or may be configured to suck the air around the heated battery 3 and discharge it to the outside, and both forms It may be configured as.
  • the cooling device 6 may include a thermoelectric element.
  • the thermoelectric element is a semiconductor element that emits cold air by the Peltier Effect when a current flows.
  • the Peltier effect means that when a current flows in a circuit composed of two different conductors, one side of the junction between the different conductors is heated while the other side is cooled according to the direction of the current. Therefore, the thermoelectric element has a side that radiates heat and a side that radiates cold air.
  • the thermoelectric element may be configured such that a direction of dissipating cold air is directed toward the battery 3.
  • the cooling device 6 may include both the cooling fan and the thermoelectric element.
  • FIG. 2 is a view showing the configuration of a cooling device according to an embodiment of the present invention.
  • the cooling device 6 includes four cooling fans F1 to F4 and two thermoelectric elements T1 and T2.
  • the two thermoelectric elements T1 and T2 are provided at both sides of the battery 3 to radiate cold air (indicated by a solid line in FIG. 2) in the direction of the battery 3 and to open in the opposite direction of the battery 3 (FIG. 2). In dashed lines).
  • two cooling fans F1 and F2 are respectively provided between the battery 3 and the thermoelectric elements T1 and T2 to cool the battery 3 and at the same time the thermoelectric element. The cold air emitted from the T1 and T2 is quickly supplied to the battery 3.
  • the other two cooling fans (F3, F4) of the four cooling fans (F1 ⁇ F4) are provided on the outside of the two thermoelectric elements (T1, T2), respectively, the heat emitted from the thermoelectric elements (T1, T2) Quickly discharge to the outside.
  • the battery 3 may be provided in a chamber or a housing separated from the outside to allow cold air to be supplied to the battery 3, and heat to be discharged to the outside of the chamber.
  • the above-described configuration of the cooling device 6 is only one example, and various cooling means other than the above can be adopted as the configuration of the cooling device 6 of the present invention.
  • the switch part 5 is electrically connected between the cooling device 6 and the battery 3.
  • the switch unit 5 is on-off by the control signal output from the control unit 2. That is, the switch unit 5 is selectively turned on or turned off by the command of the control unit 2, thereby electrically connecting the cooling device 6 and the battery 3, or the cooling device 6 ) And the battery 3 can be released.
  • the controller 2 turns on the switch unit 5 when the collision value input from the outside is equal to or greater than the preset reference collision value and the voltage value received from the voltage sensor unit 4 is equal to or greater than the preset reference voltage value. Output a control signal.
  • the controller 2 compares a collision value input from the outside with a preset reference collision value in order to determine whether the vehicle is in a collision.
  • the controller 2 may determine that the vehicle has collided when the collision value input as a result of the comparison is equal to or greater than a preset reference collision value.
  • the reference collision value may be set in consideration of the characteristics of the vehicle, the amount of impact during the collision and the durability of the battery 3.
  • controller 2 may receive the collision value from the outside in various ways.
  • the collision value input from the outside may be output from the vehicle control apparatus.
  • the vehicle control device refers to a main control unit that receives a signal from a sensor mounted in a vehicle and is in charge of electronic control accordingly.
  • the collision value input from the outside may be output from a collision detection sensor attached to the vehicle.
  • collision detection sensors are sensors or acceleration sensors attached to a vehicle and used to operate an airbag.
  • the collision value input from the outside may be output from the airbag operation sensor attached to the vehicle. This is because the shock may be transmitted to the battery 3 if the airbag attached to the vehicle is shock enough to operate.
  • the control unit 2 also compares the voltage value received from the voltage sensor unit 4 with a preset reference voltage value.
  • the preset reference voltage value may be set in consideration of the risk of ignition or explosion of the battery 3. Since the high voltage value of the battery 3 indicates that the battery 3 is in a high output and / or high capacity state, the voltage value of the battery 3 is an index indicating the risk of explosion of the battery 3 and the risk of explosion. Can be. Accordingly, the reference voltage value may be set in consideration of the risk of ignition or explosion of the battery 3.
  • the controller 2 compares the collision value input from the outside with the preset reference collision value, and determines that the vehicle has collided when the collision value input from the outside is greater than the preset reference collision value. This is as described above.
  • the control unit 2 determines that the vehicle has collided.
  • the control unit 2 When the voltage value received from the voltage sensor unit 4 is equal to or greater than a preset reference voltage value, the control unit 2 generates a control signal for turning on the switch unit 5.
  • control unit 2 does not operate the cooling device 6 only because a collision has occurred in the vehicle, but when the voltage of the battery 3 is higher than a predetermined reference and is determined to be a dangerous situation, the cooling device 6 Activate
  • the control unit 2 turns off the switch unit 5 when the voltage value received from the voltage sensor unit 4 is equal to or less than a preset reference voltage value after turning on the switch unit 5. Let's do it. That is, the controller 2 may stop the operation of the cooling device 6 when the battery 3 is sufficiently discharged after the cooling device 6 is operated after being determined to be a dangerous situation. This is because the battery 3 no longer needs to be discharged because the operation of the cooling device 6 has sufficiently discharged the battery 3 and the risk of ignition or explosion of the battery 3 is reduced. It is also desirable to leave the minimum battery 3 for subsequent processing after the vehicle accident. This is because if the battery 3 of the vehicle is fully discharged after the vehicle accident, the vehicle cannot be driven by itself and the vehicle must be towed.
  • the preset reference voltage value may be set differently from the value used for the control for turning on the switch and the value used for the control for turning off the turned on switch. A person skilled in the art will be able to set an appropriate level of reference voltage value through experiment or simulation.
  • the battery safety device 10 may further include a memory unit.
  • the reference collision value and the reference voltage value may be stored in the memory unit.
  • the memory unit may be inside or outside the control unit 2 and may be connected to the control unit 2 by various well-known means.
  • the memory unit is a mass storage medium such as a known semiconductor device or a hard disk which is known to record and erase data such as RAM, ROM, EEPROM, etc., and refers to a device that stores information regardless of the type of device. It does not refer to.
  • each component of the battery safety device according to the present invention should be understood as a logically divided component rather than a physically divided component.
  • each configuration corresponds to a logical component in order to realize the technical idea of the present invention, so that even if each component is integrated or separated, if the function performed by the logical configuration of the present invention can be realized, it is within the scope of the present invention. It should be construed that the components that perform the same or similar functions are to be interpreted as being within the scope of the present invention regardless of whether they correspond in terms of their names.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

La présente invention concerne un dispositif de sécurité de batterie. Un dispositif de sécurité de batterie selon la présente invention mesure la tension d'une batterie, lorsqu'une collision se produit sur un véhicule, et décharge et refroidit la batterie en utilisant un dispositif de refroidissement lorsque la valeur de la tension est supérieure ou égale à une valeur de référence, c'est-à-dire lorsque la quantité de charge est supérieure ou égale à une quantité de référence.
PCT/KR2014/004967 2013-06-07 2014-06-03 Dispositif de sécurité de batterie WO2014196808A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201480010815.6A CN105008184B (zh) 2013-06-07 2014-06-03 电池安全装置
US14/760,942 US9343782B2 (en) 2013-06-07 2014-06-03 Apparatus for battery safety
JP2016518271A JP6103332B2 (ja) 2013-06-07 2014-06-03 バッテリー安全装置

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20130065328 2013-06-07
KR10-2013-0065328 2013-06-07
KR10-2014-0067788 2014-06-03
KR1020140067788A KR101539695B1 (ko) 2013-06-07 2014-06-03 배터리 안전 장치

Publications (1)

Publication Number Publication Date
WO2014196808A1 true WO2014196808A1 (fr) 2014-12-11

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Application Number Title Priority Date Filing Date
PCT/KR2014/004967 WO2014196808A1 (fr) 2013-06-07 2014-06-03 Dispositif de sécurité de batterie

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WO (1) WO2014196808A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016157405A1 (ja) * 2015-03-31 2017-07-06 三菱電機株式会社 車載用蓄電装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05276677A (ja) * 1992-03-27 1993-10-22 Nissan Motor Co Ltd 充電装置
KR19980013259U (ko) * 1996-08-30 1998-06-05 김영귀 전기자동차의 배터리별 전원차단장치
KR19980022914A (ko) * 1996-09-24 1998-07-06 양재신 자동차 추돌/충돌시 전원차단장치
KR100552527B1 (ko) * 2003-08-13 2006-02-14 기아자동차주식회사 자동차의 배터리 온도 제어 장치
JP2007008411A (ja) * 2005-07-04 2007-01-18 Mazda Motor Corp 気体燃料タンクを備えた車両のバッテリ冷却装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05276677A (ja) * 1992-03-27 1993-10-22 Nissan Motor Co Ltd 充電装置
KR19980013259U (ko) * 1996-08-30 1998-06-05 김영귀 전기자동차의 배터리별 전원차단장치
KR19980022914A (ko) * 1996-09-24 1998-07-06 양재신 자동차 추돌/충돌시 전원차단장치
KR100552527B1 (ko) * 2003-08-13 2006-02-14 기아자동차주식회사 자동차의 배터리 온도 제어 장치
JP2007008411A (ja) * 2005-07-04 2007-01-18 Mazda Motor Corp 気体燃料タンクを備えた車両のバッテリ冷却装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016157405A1 (ja) * 2015-03-31 2017-07-06 三菱電機株式会社 車載用蓄電装置
CN107406002A (zh) * 2015-03-31 2017-11-28 三菱电机株式会社 车载用蓄电装置
CN107406002B (zh) * 2015-03-31 2019-11-05 三菱电机株式会社 车载用蓄电装置
US10464424B2 (en) 2015-03-31 2019-11-05 Mitsubishi Electric Corporation On-vehicle electric power storage apparatus

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