EP2830901A1 - Système de couplage de masse pour un véhicule - Google Patents

Système de couplage de masse pour un véhicule

Info

Publication number
EP2830901A1
EP2830901A1 EP13703590.3A EP13703590A EP2830901A1 EP 2830901 A1 EP2830901 A1 EP 2830901A1 EP 13703590 A EP13703590 A EP 13703590A EP 2830901 A1 EP2830901 A1 EP 2830901A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
mass
receiving element
coupling
arrangement according
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP13703590.3A
Other languages
German (de)
English (en)
Inventor
Gian Antonio D'addetta
Josef Kolatschek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2830901A1 publication Critical patent/EP2830901A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • 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
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0455—Removal or replacement of the energy storages
    • 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
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0455—Removal or replacement of the energy storages
    • B60K2001/0494—Removal or replacement of the energy storages with arrangements for sliding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection
    • 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

Definitions

  • the present invention relates to a mass coupling arrangement for a vehicle.
  • the electrical energy necessary for driving the electric motor is stored in an electrical energy store, such as e.g. a battery or an accumulator stored.
  • the battery may be charged from time to time by means of an external source of electrical energy and may serve to store recovered braking energy (recuperation energy).
  • the electrically driven vehicles are equipped with large batteries which can have a mass of several 100 kg (for example 100 to 400 kg). Thus, the battery forms up to 30% of the total vehicle mass. Due to the high mass, the battery represents a potential hazard in the event of an accident. The attachment of the battery to the body of the motor vehicle therefore plays an important role.
  • Known concepts for electrically driven vehicles see the battery as a uniform rigid block in the area of the underbody of the vehicle (ideally between the front and
  • the battery can be well protected by the surrounding support structure or contribute as a support structure itself to protect the passenger compartment.
  • a higher total mass of the vehicle may also have positive or negative consequences on the occupants of the vehicle in a vehicle-vehicle collision or even in a collision with a rigid object, such as a barrier or a pole.
  • the occupants in the lighter vehicle are subjected to greater acceleration (impact impulse) than that of the heavier vehicle.
  • Impact impulse is the active at a given time mass and its energetic share of the total momentum balance. Disclosure of the invention
  • the present invention therefore provides a grounding assembly for a vehicle, the grounding assembly comprising a ground receiving member for receiving a ground object, a guide assembly movably supporting the ground receiving member relative to the vehicle, and coupling means adapted to ground the ground receiving member to couple with the vehicle firmly connected vehicle structure and / or at least partially from the
  • the coupling means comprise an actuator which is adapted to the degree of coupling and / or the time course of the
  • the actuator-based coupling or decoupling of the mass-receiving element of the vehicle in a vehicle collision By the actuator-based coupling or decoupling of the mass-receiving element of the vehicle in a vehicle collision, the occupant load is reduced because at a certain time not the entire vehicle mass, but only a reduced proportion of the total vehicle mass acts.
  • the mass object e.g.
  • the coupling agents have a
  • Fastener associated with the actuator and configured to Set the mass receiving element on the vehicle structure of the vehicle and operated by the actuator in the event of an impact or an impending impact of the vehicle structure to decouple.
  • the fastener which can be controlled electronically, for example, is located in the underbody or tunnel of a vehicle
  • Mass receiving element including the mass object mounted thereon connected switchable rigid or yielding to the vehicle structure.
  • the fastening element based on mechanical, electrical or magnetic force effects.
  • the fastener may be a strong electromagnet that supports the fastener
  • the actuator is an electromechanical
  • the fastener When using e.g. a pyrotechnic actuator, the fastener "blown away, similar to a Batterieabsprengung (12V board battery) in conventionally powered vehicles with an internal combustion engine or a hood attachment element from the pedestrian protection
  • Mass object at least in one direction relative to the direction of movement of the
  • the coupling means e.g., in the longitudinal direction of the vehicle. According to a further embodiment, the coupling means
  • the coupling and decoupling of the ground object is attenuating.
  • the reconnection of the mass object is not a sudden process. Rather, a gradual coupling of the ground object takes place by the damping elements.
  • a damping element for example, a spring damper system or an eddy current brake can be used.
  • the damping element is arranged between a front region of the vehicle and the mass-receiving element or between a rear region of the vehicle and the mass-receiving element.
  • the damping element can either be attached to the mass-receiving element itself or to a receiving structure of the vehicle which receives the mass-receiving element in the event of a collision of the vehicle.
  • the mass-receiving element including the mass object is intercepted in the event of an impact from the rear part of the vehicle via corresponding structures. This assumes that these structures are designed according to the stiffness.
  • transverse structures can be used in the rear area of the vehicle, which serve the load transfer in a side impact.
  • the damping element is designed as an actuator in order to couple the mass absorption element to the vehicle structure with a variable damping factor.
  • the impact pulse can be very well influenced.
  • the burden on the occupants of the vehicle are thus reduced.
  • the damping element is a spring damper element whose spring force is adjustable.
  • the spring damper system is designed as a switchable element that allows an adative adjustment of the spring force.
  • a high level of stiffness of the spring damper system can reflect the standard case and a low level of stiffness the impact situation of the vehicle.
  • the damping element is designed as an electronic element whose damping factor is based on electrical or magnetic force effects. This element must be used for the standard case (ground receiving element at the
  • the coupling means comprise an impact element which is arranged between the front region of the vehicle and the mass-receiving element in order to control the movements of the at least partially decoupled one
  • the impact element does not realize time-controlled but path-controlled coupling and uncoupling.
  • the impact element is integrally formed with a partial structure of the vehicle, which is formed in the vehicle as a transverse structure for the load transfer of a side impact.
  • the impact element is used as an essential catching or coupling element for the released mass object. Since high forces must be absorbed, this is advantageously a partial structure that is integrated within the vehicle as a transversal load path for covering side collisions.
  • the impact element may be formed as part of a supporting housing of the mass object (e.g., battery case) that contributes to the overall rigidity of the vehicle.
  • the grounding coupling arrangement is a
  • Assigned sensor arrangement which is adapted to detect sensor data, evaluate and forward results of the evaluation to a control unit that controls the actuator.
  • a control unit that controls the actuator.
  • an existing impact situation or that which will occur in the near future can be determined so precisely that a drive strategy for the coupling means can be derived therefrom.
  • To determine the impact characteristics algorithms can be used, as they are common, for example, in the airbag area.
  • the resulting actuation of the actuator can be done via a set of rules. For example, in a collision with a pile, the mass is preferably decoupled at the beginning of the impact to obtain larger deceleration values. In the further course of the impact, the mass absorption element then becomes again
  • the sensor arrangement for detecting the sensor data has an acceleration sensor and / or a pressure sensor.
  • the sensors may be, for example, a typical airbag sensor system consisting of acceleration and pressure sensors, which is installed inside the vehicle and whose data are processed via the airbag electronics.
  • the electronics can also be realized independently of the airbag electronics.
  • the sensor arrangement for detecting the sensor data has prospective sensors, in particular laser-based sensors, radar and / or video sensors.
  • the predictive sensors can accurately determine an impact occurring in the near future. This in turn leads to a good influence on the impact impulse and to an effective reduction of the occupant load.
  • the sensor arrangement for detecting the sensor data has a receiver unit which is designed to receive signals from a communication of the vehicle with communication partners in an environment of the vehicle.
  • signals from vehicle-to-vehicle or vehicle-to-infrastructure communication can be evaluated by this measure. This in turn allows early detection of possible impact situations. This allows an optimized drive strategy for the actuator and thus an effective reduction of the occupant load.
  • the present invention relates to a
  • Motor vehicle drive train with an electrical machine for providing drive power, a battery for storing and providing electrical energy for the electric machine and with a grounding arrangement of the type described above.
  • Mass decoupling arrangement designed as a battery carrier assembly, wherein the battery of the motor vehicle represents the mass object.
  • Fig. 1 shows in schematic form a motor vehicle with a battery carrier assembly as an exemplary embodiment of a grounding coupling arrangement
  • Fig. 2 shows in diagrammatic form an embodiment of the battery support assembly
  • Fig. 3 shows in schematic form a further embodiment of the
  • Fig. 4 shows in schematic form another embodiment of the
  • a battery support assembly 12 which has a battery receiving element 14 which is adapted to receive a battery 16 as a mass object.
  • the battery 16 is mechanically fixedly coupled to the battery receiving element 14. It is understood that the
  • inventive mass coupling arrangement also in other vehicles, such. electrically powered two-wheeled, can be used.
  • other singular masses in the vehicle can be defined as a mass object.
  • the active principle described is also applicable to a motor as a mass object.
  • the battery carrier arrangement 12 has a guide arrangement 18, by means of which the battery receiving element 14 is movably mounted in a longitudinal direction of the motor vehicle 10.
  • the battery receiving element 14 is movably mounted in a longitudinal direction of the motor vehicle 10.
  • the battery carrier assembly 12 has coupling means 20.
  • the battery receiving element 14 is normally fixedly coupled to a body of the motor vehicle 10. In the event of an impact or imminent impact, the battery receiving element 14 is replaced by means of
  • Coupling means 20 at least partially and at least during a certain time interval decoupled from the body.
  • the coupling means 20 have an actuator 22 which adjusts the degree of coupling and / or the time course of the coupling.
  • the coupling means 20 are electrically coupled to a control unit 24.
  • the control unit 24 is used in particular for controlling the actuator 22.
  • the control unit 24 is electrically connected to a sensor arrangement 26.
  • the sensor arrangement 26 in turn has a sensor system 28 and evaluation electronics 30.
  • the sensor system 28 typically has an acceleration sensor and / or a pressure sensor. Since these sensors are typical airbag sensors, the evaluation of the data can take place via the airbag electronics.
  • Evaluation electronics 30 can also be realized independently of the airbag electronics become.
  • the sensor system 28 may have prospective sensors. This includes in particular laser-based sensors (LI DAR), radar and / or
  • the sensor system 28 may include a receiver unit that receives signals from vehicle-to-vehicle (Car2Car) or vehicle-to-infrastructure (Car2Infrastructure) communication.
  • Car2Car vehicle-to-vehicle
  • Car2Infrastructure vehicle-to-infrastructure
  • the signals provided by the various sensors of the sensor 28 are combined and evaluated in the evaluation electronics 30.
  • the results of this evaluation are forwarded to the control unit 24.
  • the control unit 24 controls the Akt.uat.or 22, by means of which the battery receiving element 14 including the battery 16 in the event of an impact or an impending impact is at least partially decoupled from the body of the motor vehicle 10 and coupled again.
  • Battery receiving element 14 or the degree of coupling depends on the specific impact situation, which is determined by the sensor assembly 26.
  • the actuator-based disconnection and coupling of the battery receiving element 14 in the event of an impact takes place on the proviso that the load on the occupants is reduced.
  • the mass effective during the impact is influenced. This in turn allows influencing the impact pulse.
  • the deceleration acting on the entire vehicle 10 can be influenced so that the load and thus the risk of injury to the occupants vis-à-vis a vehicle without such a system is significantly reduced.
  • the guide arrangement 18 ensures that the battery receiving element 14 including the battery 16 can be moved during an impact exclusively in a longitudinal direction of the motor vehicle 10.
  • the coupling means 20 can attenuate the coupling and disconnection of the battery receiving element 14 to smooth the transitions between these two states.
  • m is the effective mass (generally the vehicle mass)
  • F is the force applied by a vehicle structure (a vehicle-specific constant)
  • the effective mass m of the motor vehicle 10 is composed of two partial masses m 1 and m2.
  • m1 is the mass of
  • Vehicle battery 16 (including the Baterieageelements 14 and possibly other components that are fixedly coupled to the battery 16), for a certain
  • the temporal characteristics of the acceleration can be influenced by targeted coupling and uncoupling of masses. This effect is used in the battery carrier assembly 12 according to the invention.
  • the battery carrier assembly 12 comprises the battery receiving element 14, the battery 16 and the guide assembly 18. Furthermore, the battery carrier arrangement 12 has two electromechanical actuators 22a, 22b, a damping element 32 and an impact element 34 arranged in the front region of the motor vehicle 10. If not indicated in detail in Fig. 2 sensor assembly 26 a
  • Battery receiving element 14 including the battery 16 released in the vehicle longitudinal axis. Due to the inertia forces that moves
  • Battery receiving element 14 including the battery 16 in the event of an impact in the direction of the impact element 34.
  • the movement is damped by the damping element 32.
  • the distance of the battery receiving element 14 in the longitudinal direction of the motor vehicle is finally limited by the impact element 34.
  • Impact element 34 may be a substructure that is within the
  • Motor vehicle 10 is integrated as a transverse load path for covering side collisions.
  • the impact element 34 may also contribute to the overall rigidity of the motor vehicle 10 as part of a carrying battery housing.
  • Impact elements 34 a path-controlled decoupling of the battery receiving element 14 is realized in this embodiment.
  • the characteristic of the decoupling is thus determined mainly by the design of the damping element 32 and the distance between the impact element 34 and the battery receiving element 14.
  • FIG. 3 shows a further embodiment of the battery carrier arrangement 12.
  • the same elements with respect to FIG. 2 are provided with the same reference numerals and are not explained in detail.
  • the battery carrier assembly 12 has in this
  • the actuators 22a ', 22b' are coupled to fasteners 36a, 36b, which are the
  • the impact element 34 is likewise arranged in the front region of the motor vehicle 10 in this exemplary embodiment.
  • the damping element 32 is arranged between a rear region of the motor vehicle 10 and the battery receiving element 14. In the event of an impact of the motor vehicle 10 is thus the
  • intercepting structures 38 in the rear part of the motor vehicle 10 have a corresponding rigidity.
  • transverse structures can be used in the rear region of the motor vehicle 10, which serve for the load transfer in the case of a side impact.
  • the movement of the fastening elements 36a, 36b can also be implemented by means of electromechanical, hydraulic or pneumatic actuators. It is important only that the actuators 22 are designed so that they normally the
  • Battery receiving element 14 including the battery 16 on a body of the
  • the battery receiving element 14 and the battery 16 Upon impact of the motor vehicle 10, the battery receiving element 14 and the battery 16 is moved by the inertia forces in the direction of the impact element 34.
  • the impact element 34 limits the freedom of movement of the battery receiving element 14 in the longitudinal direction of the motor vehicle 10. The movement of the battery receiving element 14 and the battery 16 is damped by the damping element 32.
  • the same elements with respect to Fig. 2 are provided with the same reference numerals and are not explained in detail.
  • the battery carrier assembly 12 has in this
  • a damping element 32 ' which couples the battery receiving element 14 with a variable damping factor to the body of the motor vehicle 10.
  • the damping element 32 ' is as an actuator 22 "or as a spring damper system
  • the damping element 32 ' may also be designed as an adaptronic element whose damping factor is based on electrical or magnetic
  • Motor vehicle 10 for example, by a (e.g., linear acting)
  • Eddy current brake can be influenced.
  • additional fasteners 36 may be used.
  • the spring damper system is controlled by the controller 24 in the standard case such that a high level of rigidity is set in the spring damper system

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un système de couplage de masse (12) pour un véhicule (10), comprenant un élément support de masse (14) destiné à supporter un objet massif (16), un ensemble de guidage (18) au moyen duquel l'élément support de masse (14) est monté mobile par rapport au véhicule (10) et comprenant des moyens de couplage (20) disposés pour coupler l'élément support de masse (14) à une structure de véhicule solidaire du véhicule (10) et/ou le découpler au moins partiellement de la structure de véhicule, les moyens de couplage (20) présentant un actionneur (22) qui est conçu pour régler le degré du couplage et/ou l'allure du couplage dans le temps.
EP13703590.3A 2012-03-27 2013-02-11 Système de couplage de masse pour un véhicule Ceased EP2830901A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012204856A DE102012204856A1 (de) 2012-03-27 2012-03-27 Massekopplungsanordnung für ein Fahrzeug
PCT/EP2013/052661 WO2013143747A1 (fr) 2012-03-27 2013-02-11 Système de couplage de masse pour un véhicule

Publications (1)

Publication Number Publication Date
EP2830901A1 true EP2830901A1 (fr) 2015-02-04

Family

ID=47683742

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13703590.3A Ceased EP2830901A1 (fr) 2012-03-27 2013-02-11 Système de couplage de masse pour un véhicule

Country Status (5)

Country Link
US (1) US9469183B2 (fr)
EP (1) EP2830901A1 (fr)
JP (1) JP6063033B2 (fr)
DE (1) DE102012204856A1 (fr)
WO (1) WO2013143747A1 (fr)

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Also Published As

Publication number Publication date
DE102012204856A1 (de) 2013-10-02
WO2013143747A1 (fr) 2013-10-03
US9469183B2 (en) 2016-10-18
US20150053492A1 (en) 2015-02-26
JP2015511559A (ja) 2015-04-20
JP6063033B2 (ja) 2017-01-18

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