• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device for cooling an energy source (11) disposed on board a vehicle. The device comprises an enclosure (14) in which the energy source is disposed, the enclosure comprising an air intake opening (15) adapted to cool the source and an outlet opening (16) for said air after he has cooled the source. The inlet mouth comprises means for sucking the air outside the enclosure and blowing it inside the enclosure, so as to create a flow inlet flow D1. The outlet mouth comprises means for sucking the air inside the enclosure and blowing it outside the enclosure, so as to create a flow output flow D2. The flow D2 is strictly greater than the flow D1, so as to create a vacuum in the enclosure. Application: electric or hybrid vehicles
    公开号:FR3028456A1
    申请号:FR1461025
    申请日:2014-11-14
    公开日:2016-05-20
    发明作者:Chi Dung Ton；Frederic Auzas；Helene Offret
    申请人:Renault SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a device for cooling an energy supply device for an electric or hybrid vehicle.
    [0002] In the current context of consensus around global warming, the reduction of carbon dioxide (CO2) emissions is a major challenge faced by car manufacturers, the standards being ever more demanding in this area.
    [0003] In addition to the steady improvement in efficiency of conventional combustion engines, which is accompanied by a reduction in CO2 emissions, electric vehicles are now considered the most promising solution for reducing CO2 emissions. Different technologies have been envisaged to design traction batteries for electric vehicles, each having advantages and disadvantages. Lithium-ion (Li-ion) technology has the advantage of an excellent compromise between energy density, favorable to autonomy, and power density, which is favorable to performance, particularly acceleration. But it also has the disadvantage of being highly exothermic and requiring the implementation of efficient and expensive cooling means. This is a disadvantage that the present invention proposes to solve. Despite the good compromise between autonomy and power obtained thanks to Li-ion batteries, the autonomy of electric vehicles is still limited when compared to thermal vehicles. This generates anxiety for drivers and acts as a brake on buying from potential customers. A known solution to this problem is to equip these vehicles with an additional source of electrical energy. When the additional source is occasionally requested as soon as the main source, for example a Li-ion battery, drops below a load floor level, it is referred to as range extender or range extender according to the terminology Anglo-Saxon. The additional source of energy can then be a heat engine of optimized size and operation 3028456 or a fuel cell or other system that can perform this function. When the additional source is intermittently solicited according to a complex law of energy management, it is called a hybrid vehicle. It is then preferentially a heat engine, 5 always size and optimized operation, and it is called hybrid hybrid-electric vehicle, rechargeable or not. But it can also be a fuel cell or a battery of a different type, such as an aluminum-air battery for example. In the remainder of this application, the term "electric vehicles" refers to electric vehicles and hybrid electric-electric vehicles or other hybridized forms, including plug-in hybrid vehicles. However, range extenders and hybrid vehicles still have many disadvantages. In particular, any system providing energy induces a release of heat (combustion in the engine, heat from chemical reactions in a battery or in an aluminum-air battery), which is difficult to dissipate. This again is a disadvantage that the present invention proposes to solve.
    [0004] Patent application US 2007/0216371 A1 discloses a cooling system of a source of electrical energy disposed in the passenger compartment of an electric vehicle. The battery is arranged in a "pack" according to the English terminology, comprising an air intake taken from the passenger compartment and an exhaust air outlet outside the passenger compartment. The air outlet 25 is equipped with a fan to force the expulsion of the heated air towards the outside, so that an air depression is created in the pack and the fresh air of the cockpit naturally enters the pack, through the air intake provided for this purpose. The main disadvantage of the system according to US 2007/0216371 A1 is that, in case of failure of the single fan, not only the battery is no longer cooled properly, since the air is no longer forced into the pack, but also possible toxic fumes from the battery can "go up" to the passenger compartment. Another disadvantage is the acoustic discomfort, the air sucked inside the cabin probably generating a noise audible by the passengers. Yet another disadvantage relates to the air recirculation mode of the passenger compartment, in which the air of the passenger compartment 3028456 circulates in a closed loop. With the system according to US 2007/0216371 A1, the air in the passenger compartment decreases in quantity, generating a depression and the need to interrupt the recycling mode. These are again disadvantages that the present invention proposes to solve.
    [0005] The object of the present invention is to overcome the aforementioned drawbacks, in particular to make reliable the cooling of an energy source in an electric vehicle. For this purpose, the invention relates to a device 10 for cooling an energy source disposed on board a vehicle. The device comprises an enclosure in which the energy source is arranged, the enclosure comprising an air inlet mouth adapted to cool the source and an outlet mouth of said air after it has cooled the source. The inlet mouth has means for drawing air outside the enclosure and blowing it inside the enclosure, so as to create a flow input flow Di. The outlet mouth comprises means for sucking the air inside the enclosure and blowing it outside the enclosure, so as to create a flow output flow D2. The flow D2 is strictly greater than the flow D1, so as to create a vacuum in the enclosure.
    [0006] In a preferred embodiment, the enclosure may be sealed and disposed in the passenger compartment of the vehicle, the inlet opening being able to be arranged so as to draw air outside the vehicle and the outlet port ( 16) being able to be arranged so as to blow the air outside the vehicle.
    [0007] Advantageously, the enclosure may comprise a sole and a cover closed by a seal. For example, the means for sucking and blowing air may be fans. Since the inlet mouth and the outlet mouth have substantially the same dimensions, the fans may be identical and configured so that the operating speed of the fan disposed at the outlet mouth is strictly greater than the operating speed of the fan. arranged at the entrance mouth.
    [0008] The invention also relates to an electric vehicle comprising a traction battery cooled by a device as defined above. The invention also relates to an electric vehicle having a range extender cooled by a device as defined above. The invention also relates to an electric hybrid-10 electric vehicle whose thermal engine or the traction battery is cooled by a device as defined above. The main advantage of the present invention is to reliably prevent any smell or fumes in the passenger compartment, to prevent any noise disturbance, as well as to allow the air recirculation mode in all circumstances.
    [0009] Other characteristics and advantages of the invention will become apparent with the aid of the description which follows, given with reference to FIGS. 1a and 2b annexed, which diagrammatically represent an exemplary embodiment of the invention, in which an extension of autonomy 11 is disposed in the passenger compartment of an electric vehicle 1 powered by a Li-ion battery 13 disposed under its body. The extender could also be placed in the load compartment of a commercial vehicle. For example, the range extender 11 may be a heat engine, as in the present embodiment, but also a fuel cell or any other suitable source of energy. It should be noted that the present invention is particularly advantageous in this type of configuration: the range extender 11 being in the passenger compartment 12 of the vehicle 1, it becomes essential to effectively remove heat and prevent any gas emanation toxic, especially the exhaust gas in the present example where the range extender 11 is a heat engine.
    [0010] For this purpose, the range extender 11 is disposed in an enclosure 14 formed by a soleplate 141 and a cover 142, between which is disposed a gasket 143: the enclosure 14 not only provides a protective function mechanical extension extender 11, but also a function of thermal, electrical and sound insulation, as well as a function of fluid tightness. The advantage of the cover 142 is that it can be opened to access the extender 11 during maintenance operations. Thus, the unpleasant odors, such as petrol odors, or toxic, such as exhaust gases, can not infiltrate the passenger compartment 12. The extender 11 thus disposed in the enclosure 14 in a sealed manner with respect to 12, it is necessary to evacuate the heat released inside the chamber 14, but also to renew the air. This is why an aeration device according to the invention makes it possible to effectively circulate the air in the chamber 14. This device consists of an air inlet mouth 15 to enter the chamber 14 fresh air (in the sense that its temperature is lower than the temperature in the chamber 14) captured outside the vehicle 1, and an air outlet mouth 16 to expel air to outside the vehicle 1, once it is heated and stale. In the present embodiment, the mouths 15 and 16 are made at the floor of the vehicle 1, at locations 20 where they do not compromise the vehicle structure in case of impact. In order to further reinforce the seal between the interior of the enclosure 14 and the passenger compartment 12, gaskets may be arranged around the mouths 15 and 16. The air intake opening 15 further comprises a fan 17 arranged to suck the fresh air captured outside the vehicle 1 and force its entry into the chamber 14. The air outlet mouth 16 has a fan 18 arranged for it so as to suck stale air captured inside the enclosure 14 and force its expulsion to the outside of the vehicle 1. This dual suction device according to the invention generates through the enclosure 14 a powerful airflow illustrated by arrows in Figure 1b.
    [0011] The operation of this aeration device is based on the principle of a speed gradient: the fans 17 and 18 are designed such that the flow rate D 1 of the fresh air flow entering through the mouth 15 is less than the flow rate D 2 the outgoing flow stale by the mouth 16, so as to create a vacuum in the chamber 14: the pressure inside the chamber 1-4 is lower than the atmospheric pressure prevailing outside the vehicle 1 and inside its passenger compartment 12. In the present embodiment, the mouths 15 and 16 having the same dimensions, this amounts to ensuring that the speed cFu flow at the inlet is lower than the speed of the flow at the exit. The fans 17 and 18 being identical in the present embodiment, this amounts to ensuring that the operating speed of the fan 17 is lower than that of the fan 18. Thus, even in the very unlikely case where the seal would not be perfect between the enclosure 14 and the passenger compartment 12, for example in case of failure of the seal 143, the stale air present in the enclosure 14 can not infiltrate towards the passenger compartment 12, for the simple reason that, in this case, it is the air present in the passenger compartment 12 which would infiltrate into the enclosure 14, forcing even more its exit by the mouth 16. It could even be envisaged, in the case where the extension 15 d autonomy 11 would be a fuel cell, to increase the air pressure inside the chamber 14 during special life phases requiring additional oxygen supply. This would, however, require controlling the fans 17 and 18 in a manner opposite to that described above, so as to create an overpressure in the chamber 14 instead of a depression. In addition to ensuring effective cooling of the range extender 11 and thus to protect the cabin 12 against any inadvertent rise in the temperature that could cause the operation of the range extender 11, the present invention has the main advantage its reliability , this even in degraded operation situation. Indeed, if the fan 17 fails, then the fan 18 continues to maintain alone a vacuum in the chamber 14, and thus the flow of air flow and 30 preventing any odor or gas to enter the 12. Similarly, if the fan 18 fails, there is certainly no vacuum in the chamber 14 but the fan 17 continues to maintain alone a flow of air in the chamber 14. Finally, if the fans 17 and 18 both fail simultaneously, which is very unlikely, there is certainly no vacuum in the enclosure 14 and no air circulation, but the 3028456 cover 142 and the seal 143 continue to prevent any odor or emanation from passing from inside the enclosure 14 to the interior of the passenger compartment 12. In this case, a stop command could be sent to the range extender 11 , in order to interrupt any release of heat 5 in the enclosure 14. Finally, the fans Latters 17 and 18 being outside the vehicle and not inside the passenger compartment 12, the invention does not create any noise to passengers.
    [0012] 10 Easy to implement and robust, the invention also has the advantage that it can be easily implanted in a vehicle that was not originally designed to accommodate a range extender, in its cabin or in its compartment. charge when it comes to a commercial vehicle.
    [0013] This exemplary embodiment illustrates a cooled range extender according to the invention. However, any heat generating system, including the Li-ion battery and / or the heat engine or an electric or hybrid vehicle, may be cooled according to the invention.
    权利要求:
    Claims (8)
    [0001]
    CLAIMS1 Device for cooling an energy source (11) disposed on board a vehicle (1), the device being characterized in that it comprises an enclosure (14) in which the energy source is arranged, the enclosure comprising an air inlet mouth (15) adapted to cool the source and an outlet mouth (16) of said air after it has cooled the source, the inlet mouth comprising means for sucking air outside the enclosure and blow it inside the enclosure, so as to create a flow inlet flow D1, the outlet mouth having means for sucking the air inside the enclosure the enclosure and blow it outside the enclosure, so as to create a flow output flow D2, the flow D2 being strictly greater than the flow D1, so as to create a vacuum in the enclosure.
    [0002]
    2. Device according to claim 1, characterized in that the enclosure (14) is sealed and disposed in the passenger compartment (12) of the vehicle (1), the inlet mouth (15) being arranged so as to suck the air outside the vehicle and the outlet mouth (16) being arranged to blow the air outside the vehicle.
    [0003]
    3. Device according to claim 2, characterized in that the enclosure (14) comprises a sole (141) and a cover (142) closed by a seal (143).
    [0004]
    4. Device according to claim 1, characterized in that the means for sucking and blowing the air are fans (17, 18).
    [0005]
    5. Device according to claim 4, characterized in that, the inlet mouth (15) and the outlet mouth (16) having substantially the same dimensions, the fans are identical and configured so that the speed of operation of the fan (18) disposed at the outlet mouth is strictly greater than the operating speed of the fan (17) disposed at the inlet mouth. 3028456
    [0006]
    6. Electric vehicle comprising a traction battery, characterized in that said battery is cooled by a device according to any one of the preceding claims.
    [0007]
    7. Electric vehicle (1) comprising a range extender (11), characterized in that said extender is cooled by a device according to any one of claims 1 to 5.
    [0008]
    8. Hybrid thermal-electric vehicle, characterized in that its thermal motor or its traction battery is cooled by a device according to any one of claims 1 to 5.
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    同族专利:
    公开号 | 公开日
    FR3028456B1|2018-03-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH08310256A|1995-05-19|1996-11-26|Nissan Motor Co Ltd|Battery frame structure for electric vehicle|
    US20040137313A1|2003-01-09|2004-07-15|Ford Motor Company|Battery system for automotive vehicle|
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    US20100059299A1|2008-09-10|2010-03-11|Dr. Ing. H.C.F. Porsche Aktiengesellschaft|Battery arrangement|US10483510B2|2017-05-16|2019-11-19|Shape Corp.|Polarized battery tray for a vehicle|
    US10632857B2|2016-08-17|2020-04-28|Shape Corp.|Battery support and protection structure for a vehicle|
    US10661646B2|2017-10-04|2020-05-26|Shape Corp.|Battery tray floor assembly for electric vehicles|
    US10886513B2|2017-05-16|2021-01-05|Shape Corp.|Vehicle battery tray having tub-based integration|
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    US11211656B2|2017-05-16|2021-12-28|Shape Corp.|Vehicle battery tray with integrated battery retention and support feature|
    US11214137B2|2017-01-04|2022-01-04|Shape Corp.|Vehicle battery tray structure with nodal modularity|
    US11273697B2|2020-03-11|2022-03-15|Shape Corp.|Battery support and protection structure for a vehicle|
    法律状态:
    2015-11-19| PLFP| Fee payment|Year of fee payment: 2 |
    2016-05-20| PLSC| Publication of the preliminary search report|Effective date: 20160520 |
    2016-11-18| PLFP| Fee payment|Year of fee payment: 3 |
    2017-11-21| PLFP| Fee payment|Year of fee payment: 4 |
    2019-11-20| PLFP| Fee payment|Year of fee payment: 6 |
    2020-11-20| PLFP| Fee payment|Year of fee payment: 7 |
    2021-11-22| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1461025A|FR3028456B1|2014-11-14|2014-11-14|DEVICE FOR COOLING AN ENERGY SOURCE DISPOSED ABOVE AN ELECTRIC OR HYBRID VEHICLE|
    FR1461025|2014-11-14|FR1461025A| FR3028456B1|2014-11-14|2014-11-14|DEVICE FOR COOLING AN ENERGY SOURCE DISPOSED ABOVE AN ELECTRIC OR HYBRID VEHICLE|
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