CN103052520B - 车辆的后部保护结构 - Google Patents

车辆的后部保护结构 Download PDF

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CN103052520B
CN103052520B CN201180038020.2A CN201180038020A CN103052520B CN 103052520 B CN103052520 B CN 103052520B CN 201180038020 A CN201180038020 A CN 201180038020A CN 103052520 B CN103052520 B CN 103052520B
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wheel drive
drive motor
vehicle
motor
wheel
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CN103052520A (zh
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铃木彰
新名祐三
坂口佳弘
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
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    • B60K15/063—Arrangement of tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/356—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Body Structure For Vehicles (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

一种车辆的后部保护结构，具有发动机及后轮驱动用电机（5）作为车辆的行驶驱动源，上述后轮驱动用电机（5）配置于上述车辆的左右后轮（10a、10b）之间，并且，上述发动机的燃料箱（17）与上述后轮驱动用电机（5）沿车辆前后方向排列配置，其中，支撑所述后轮驱动用电机（5）的后悬架的悬架横梁（21）形成为井字形状，上述后轮驱动用电机（5）及与该后轮驱动用电机（5）连接的高压线（40）被配置于由上述悬架横梁（21）包围的空间（33）内。

Description

车辆的后部保护结构
技术领域
本发明涉及车辆的后部结构，涉及实现在从后方被追尾时保护后轮驱动用电机及燃料箱的技术。
背景技术
在作为行驶驱动源而搭载电机的车辆中，已知有如后轮驱动车或者四轮驱动车的用电机驱动后轮的车辆。在这样的车辆中，为了使动力传达机构紧凑化，一般在左右后轮之间配置电机。而且，电机配置于行李室的下方的方式较多，为了确保行李室的空间，设计成电机尽可能配置于低的位置。
而且，还开发有如混合动力车辆那样，作为驱动源，除了电机外，还包括发动机的车辆。在具有上述发动机的车辆、特别是乘用车中，为了确保车厢内部，通常，发动机的燃料箱配置于后部座椅的下方。因此，在用电机进行后轮驱动的混合动力车中，公知有这样布置的混合动力车，即、在电机的前方配置燃料箱的方式在空间上是有效的，电机与燃料箱在车辆前后方向并列地配置（参照专利文献1）。
先行技术文献
专利文献
专利文献1：日本特开2008-195259号公报。
发明内容
发明要解决的问题
如专利文献1所述，在左右后轮之间具有电机，且在电机的前方配置有燃料箱，在这样的车辆中，当从后方被追尾时，电机有可能向前方挤压，与燃料箱接触并使其破损。
而且，用于从控制同一电机的驱动的控制单元供给驱动电力的电力供给线连接于电机。因此，在从后方被后续车辆追尾而发生电机移动的情况下，与电机连接的电力供给线有可能切断或者破损，露出的电力供给线有可能与破损的燃料箱接触。
本发明用于解决上述问题，其目的在于提供车辆的后部保护结构，在具有发动机并用电机驱动后轮的车辆中，当从后方被追尾时，该车辆的后部保护结构能实现电机及燃料箱的保护。
解决课题采用的手段
根据第一方面记载的本发明，为了达到上述目的，是如下的车辆的后部保护结构：车辆的后部保护结构包括发动机及后轮驱动用电机作为车辆的行驶驱动源，后轮驱动用电机被配置于车辆的左右后轮之间，并且，发动机的燃料箱与后轮驱动用电机沿车辆前后方向排列配置，其中，支撑后轮驱动用电机的后悬架的悬架横梁形成为井字形状，后轮驱动用电机及与该后轮驱动用电机连接的电力供给线被配置于由悬架横梁包围的空间内。
根据第二方面记载的本发明，电力供给线隔着后轮驱动用电机在与燃料箱相反的一侧与该后轮驱动用电机连接。
根据第三方面记载的本发明，从用于控制该后轮驱动用电机的驱动的控制单元经由电力供给线向后轮驱动用电机供给电力，控制单元配置于后轮驱动用电机的上方，电力供给线在由悬架横梁包围的空间内与控制单元连接。
根据第一方面的本发明，后轮驱动用电机及与其连接的电力供给线被配置于由形成井字形状的悬架横梁包围的空间，因而车辆从后方被追尾或在后轮附近发生侧面碰撞的情况下，利用刚性比较高的悬架横梁保护后轮驱动用电机及电力供给线。而且，在追尾时抑制了由悬架横梁支撑的后轮驱动用电机的移动，因而，例如在电机的前方配置燃料箱的情况下，能够避免燃料箱与后轮驱动用电机及电力供给线的接触，实现燃料箱的保护。
根据第二方面的本发明，在追尾时，例如即使后轮驱动用电机或者燃料箱向前方移动，与后轮驱动用电机连接的电力供给线位于与燃料箱相反的一侧，因而能够可靠地避免电力供给线与燃料箱的接触。
根据第三方面的本发明，电力供给线在由悬架横梁包围的空间内与控制单元连接，因而包括与控制单元连接的连接部的电力供给线配置于由悬架横梁包围的空间内，在追尾时、侧面碰撞时，能够防止该电力供给线的连接部的剪切破坏。
附图说明
图1是示出本发明实施方式的车辆行驶驱动***设备的配置的侧面图。
图2是示出本发明实施方式的车辆后部的结构的平面图。
图3是示出本发明实施方式的车辆后部的结构的后视图。
图4是示出本发明实施方式的高压线的配置的右侧面图。
具体实施方式
以下，基于附图对本发明实施方式进行说明。
图1是示出本发明的实施方式的车辆行驶驱动***的设备配置的侧面图。如图1所示，采用本发明的电机保护结构的本实施方式的车辆1是具有驱动前轮2a、2b的发动机3以及前轮驱动用电机4和后轮驱动用电机5的四轮驱动式的混合动力车。
在车辆的左右前轮2a、2b之间，包括发动机3、前轮驱动用电机4、利用发动机3驱动而发电的发电机6。而且，在前轮驱动用电机4的上方具有驱动控制前轮驱动用电机4的前电机控制单元7。
在车辆1的左右后轮10a，10b之间具有后轮驱动用电机5。后轮驱动用电机5与减速机5a一体化构成，能通过驱动轴11驱动左右后轮10a、10b。在后轮驱动用电机5的上方具有驱动控制后轮驱动用电机的后电机控制单元12。
在车厢内部13的地板面14的下方，具有作为前轮驱动用电机4及后轮驱动用电机5的动力源的电机驱动用电池15。电机驱动用电池15通过前电机控制单元7与前轮驱动用电机4连接，同时通过后电机控制单元12与后轮驱动用电机5连接。前电机控制单元7及后电机控制单元12分别包括反相器、充电器及DC-DC转换器等，构成为，使由电机驱动用电池15供给的电力升压，并供给前轮驱动用电机4及后轮驱动用电机5，驱动控制电机4、5，而且，在车辆减速时，通过前轮驱动用电机4及后轮驱动用电机5使电力再生，从而能对电机驱动用电池15进行充电。而且，电机驱动用电池15能利用由发动机3驱动的发电机6所发出的电力进行充电。
在车辆1的后部座席16的下方设有发动机3的燃料箱17。燃料箱17以与后轮驱动用电机5大致相同的高度配置于电机驱动用电池15的后方、且后轮驱动用电机5的前方。
图2、图3示出车辆后部的结构，具体而言，示出后悬架19的概略结构，图2是平面图，图3是后视图。图4是示出高压线40的配置的侧面图。
如图2～4所示，在本实施方式中，车辆1的后悬架19是一种多连杆式悬架，其包括：通过橡皮衬套20被车体支撑的悬架横梁21；上部连杆22a、22b；下部连杆23a、23b；纵臂24a、24b；前端控制连杆25a、25b；设于车体与下部连杆23a、23b之间的螺旋弹簧26a、26b；以及减震器27a、27b。
支撑各连杆22a、22b、23a、23b、25a、25b的悬架横梁21由互相在车辆左右方向留有间隔并沿车辆前后方向延伸的左右侧梁30a、30b、连接该左右的侧梁30a、30b的前部并沿车辆左右方向延伸的第一后横梁31以及连接左右的侧梁30a、30b的后部并沿车辆左右方向延伸的第二后横梁32构成，由上述高刚性的各梁30a、30b、31、32构成井字形状。在悬架横梁21的内部，形成由左右侧梁30a、30b、第一后横梁31及第二后横梁32包围的空间33。
悬架横梁21支撑后轮驱动用电机5。具体而言，悬架横梁21的第二后横梁32配置于后轮驱动用电机5的下方，用于支撑后轮驱动用电机5的后侧下部。悬架横梁21的第一后横梁31竖立设置于后轮驱动用电机5的前方，以在后轮驱动用电机5与燃料箱17之间进行划分，并沿车辆左右方向延伸配置，支撑后轮驱动用电机5的前部。
对后轮驱动用电机5进行驱动电力供给控制的后电机控制单元12是大致直方体的形状，以在车辆左右方向沿着左右侧梁30a、30b的上方延伸的方式配置。从后电机控制单元12向后轮驱动用电机供给电力的高压线40（电力供给线）配置于由全部悬架横梁21包围的空间33内。具体而言，高压线40包括其两端连接部40a、40b，配置于由左右侧梁30a、30b、第一后横梁31及第二后横梁32包围的空间33内。高压线40与后电机控制单元12的连接部40a位于后轮驱动用电机5和右侧梁30b之间，且设置于后电机控制单元12的下表面。高压线40与后轮驱动用电机5的连接部40b设置于后轮驱动用电机5的后面，在第二后横梁32的后端面32a的前方连接。高压线40自与后轮驱动用电机5的连接部40b起在后轮驱动用电机5的后方且第二后横梁32的后端面32a的前方向车辆右方向延伸，在后轮驱动用电机5与右侧梁30b之间向上方且前方延伸，与后电机控制单元12连接。
在本实施方式中，如上所述，后轮驱动用电机5配置于由高刚性的悬架横梁21包围的空间33内，因此，在从后方被后续车辆追尾或在后轮附近发生侧面碰撞时，能够防止后轮驱动用电机5的破损。特别是，为了隔开沿车辆前后方向排列配置的后轮驱动用电机5与燃料箱17而配置第一后横梁31，因而，在追尾时，例如即使后轮驱动用电机5被挤向前方，但是，通过第一后横梁31，仍能够避免与燃料箱17的接触，防止燃料箱17的破损。
而且，连接后电机控制单元12与后轮驱动用电机5的高压线40也配置于由高刚性的悬架横梁21包围的空间33内，因而能够防止追尾时或侧面碰撞时高压线40的破损。
而且，高压线40与后轮驱动用电机5的后部连接，而后轮驱动用电机5的后部位于与燃料箱17相反的一侧的位置，因此，构成如下结构，例如在追尾时，即使后轮驱动用电机5向前方移动、且高压线40破损露出，高压线40也难以直接接触燃料箱5，不易使燃料箱17内的燃料起火。
而且，高压线40与后电机控制单元12的连接部40a也与高压线40一起配置于由悬架横梁21包围的空间33内，因而能够防止在追尾时或侧面碰撞时在连接部40发生的剪切破坏。在本实施方式中，在后轮驱动用电机5的前方配置有燃料箱17，但是，也可适用于在后轮驱动用电机5的后方配置有燃料箱17的车辆。
而且，在本实施方式中，本发明适用具有多连杆式的后悬架19的车辆，但是，只要是在后悬架形成有由高刚性的梁包围的空间的车辆，都能适用本发明。
而且，在本实施方式中，本发明适用由前轮驱动用电机4及后轮驱动用电机5驱动的四轮驱动式的混合动力车，但是，本发明并不限定于此，例如，也能够适用于仅在后轮用电机驱动的混合动力车等将后轮驱动用电机与发动机沿车辆前后方向排列配置的车辆。
附图标记说明
1   车辆
5   后轮驱动用电机
12  后电机控制单元
17  燃料箱
19  后悬架
21  悬架横梁
31  第一后横梁
32  第二后横梁
40  高压线
40a、40b  连接部

Claims (3)

1.一种车辆的后部保护结构，所述车辆的后部保护结构包括发动机及后轮驱动用电机作为车辆的行驶驱动源，所述后轮驱动用电机被配置于所述车辆的左右后轮之间，并且，所述发动机的燃料箱与所述后轮驱动用电机沿车辆前后方向排列配置，所述车辆的后部保护结构的特征在于：
支撑所述后轮驱动用电机的后悬架的悬架横梁由沿车辆前后方向延伸的左右侧梁、连接该左右侧梁的前部并沿车辆左右方向延伸的第一后横梁以及连接所述左右侧梁的后部并沿车辆左右方向延伸的第二后横梁形成为井字形状，
所述燃料箱配置于所述后轮驱动用电机的车辆前方侧，
所述第一后横梁竖立设置于该后轮驱动用电机的前方，以隔开所述后轮驱动用电机与所述燃料箱，
所述后轮驱动用电机及与该后轮驱动用电机连接的电力供给线被配置于由所述悬架横梁包围的空间内，所述电力供给线与所述后轮驱动用电机的连接部在所述车辆前后方向在与所述燃料箱相反的一侧设置于所述后轮驱动用电机的后面，在所述第二后横梁的后端面的前方连接。
2.根据权利要求1所述的车辆的后部保护结构，其特征在于，
所述第二后横梁配置于所述后轮驱动用电机的下方，支撑该后轮驱动用电机的后侧下部，
并且，所述电力供给线配置于所述第二后横梁的后端面的前方。
3.根据权利要求1或2所述的车辆的后部保护结构，其特征在于，
所述后轮驱动用电机从后电机控制单元经由所述电力供给线被供给电力，所述后电机控制单元配置于所述后轮驱动用电机的上方，控制后轮驱动用电机的驱动，
所述电力供给线在由所述悬架横梁包围的空间内与所述后电机控制单元连接。
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