CN114162217B - Electric chassis and automobile - Google Patents

Electric chassis and automobile Download PDF

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Publication number
CN114162217B
CN114162217B CN202111336620.9A CN202111336620A CN114162217B CN 114162217 B CN114162217 B CN 114162217B CN 202111336620 A CN202111336620 A CN 202111336620A CN 114162217 B CN114162217 B CN 114162217B
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China
Prior art keywords
assembly
cooling
interface
battery module
chassis
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CN202111336620.9A
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Chinese (zh)
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CN114162217A (en
Inventor
林金源
董冰
汤桃峰
游道亮
酆义强
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Jiangling Motors Corp Ltd
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Jiangling Motors Corp Ltd
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Publication of CN114162217A publication Critical patent/CN114162217A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • 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
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • 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
    • 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
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Transportation (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Power Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The invention provides an electric chassis and an automobile, the electric chassis comprises a front suspension assembly, a rear suspension assembly and a reinforcing structure arranged between the front suspension assembly and the rear suspension assembly, the reinforcing structure comprises an outer frame and a plurality of reinforcing beams arranged in the outer frame, a plurality of accommodating spaces are formed between the plurality of reinforcing beams, the accommodating spaces are used for accommodating a battery module, and a cooling medium transmission assembly connected with the battery module is further arranged in the reinforcing beams. Through the additional strengthening in the electric chassis, design into the protection casing that can hold battery module, in electric chassis's structural strength, protect battery module, reduced the casing that carries out independent protection to battery module for among the prior art, equivalent to having reduced whole car's weight, and the relative increase of arrangement space of battery has increased electric automobile's continuation of journey mileage.

Description

Electric chassis and automobile
Technical Field
The invention relates to the technical field of electric automobiles, in particular to an electric chassis and an automobile.
Background
The battery is one of the core components of the new energy electric automobile taking electric power as power, and is the power source of the whole automobile. The space that electric automobile can be used to hold the battery has restricted on-vehicle battery module's energy, increases battery quantity and needs whole car additional structure in order to realize safe bearing, and the increase of whole car weight further causes the energy consumption to increase, has restricted electric automobile's continuation of journey mileage.
In the prior art, a vehicle body structure, a vehicle frame and a battery module are generally designed into separate components and then assembled, however, the battery module needs to be independently designed to bear a shell for protection, and meanwhile, the vehicle body structure and the vehicle frame are also provided with corresponding reinforcing structures, so that the battery arrangement space and the light weight of the whole vehicle are limited, and the endurance mileage of the electric vehicle is limited.
The known pick-up truck type needs to have good cargo carrying and poor road handling capabilities, and the prior art generally employs a non-load bearing body structure, i.e., having a split frame and body, the frame providing the primary load bearing capability; the frame is formed by connecting a left longitudinal beam, a right longitudinal beam and a plurality of cross beams through welding, riveting and other processes; the longitudinal beam and the transverse beam are formed by steel plates through processes such as stamping, welding and the like, and are constructed into non-closed special-shaped beams with similar cross sections in a shape like a Chinese character kou; the frame structure is not beneficial to providing a closed cavity suitable for accommodating batteries by simply adding a cover and a bottom plate, and is difficult to be modified into a lightweight electric chassis integrating the batteries.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an electric chassis and an automobile, and aims to solve the problems that in the prior art, a battery module needs to be independently designed to bear and a protective shell is required to be protected to form a battery pack, the battery pack forms the weight burden of the electric automobile, and the electric automobile needs to strengthen a mounting structure to provide enough bearing capacity for the battery pack; the above factors increase the weight of the electric vehicle and deteriorate the power consumption rate, and at the same time, the battery needs to be provided with a thermal management device to maintain a proper operation temperature thereof, and the thermal management device encroaches on the space and deviates from the target of increasing the battery energy in the limited space, thereby limiting the technical problem of the endurance mileage of the electric vehicle.
In order to achieve the above object, the present invention is achieved by the following technical scheme: the utility model provides an electric chassis, is applied to electric automobile, electric chassis includes front suspension subassembly, back suspension subassembly and locates front suspension subassembly with the additional strengthening between the back suspension subassembly, additional strengthening includes outer frame and locates a plurality of stiffening beam in the outer frame, form a plurality of accommodation space between a plurality of stiffening beam, accommodation space is used for holding battery module, still be equipped with in the stiffening beam with the cooling medium transmission subassembly that battery module is connected.
Compared with the prior art, the invention has the beneficial effects that: through the additional strengthening in the electric chassis, the protection casing of battery module can be held in the design, protect the battery module, the rigidity of additional strengthening's outer frame has been improved simultaneously after the battery module installation, the outer frame of additional strengthening has also strengthened outer frame when realizing bearing and protecting the battery module, further strengthen the electric chassis, reduce the casing of carrying out independent protection to the battery module for among the prior art, be equivalent to outer frame in the additional strengthening and battery module combination have improved whole mode, be equivalent to the weight of reducing whole car, and the arrangement space of battery increases relatively, the continuation of journey mileage of electric automobile, set up the battery module in the chassis crossbeam inboard with the battery module for prior art, utilize the accommodation space between the stiffening beam to set up the battery module, the ground clearance of having guaranteed the automobile body and the space in the car, simultaneously through be equipped with in the stiffening beam with the cooling medium transmission subassembly of battery module connection, the cooling interface of battery module when installing the battery module with the cooling medium transmission subassembly accomplishes the butt joint and realizes the intercommunication of cooling medium runner, the cooling pipeline has been saved, the adverse effect in the aspect such as cost that the cooling pipeline brings has been optimized, arrangement space, installation technology and leak prevention. When the automobile body is collided, protect battery module through stiffening beam under the impaired prerequisite of battery module, protect cooling transmission subassembly simultaneously, prevent that cooling medium from revealing to further improved integration between each part, increased battery module's arrangement space, be favorable to the lightweight of whole car, thereby improved electric automobile's continuation of journey mileage.
According to an aspect of the above technical scheme, the battery module includes the electric core and locates the cooling plate of electric core downside, be equipped with first cooling interface on the cooling plate, the cooling medium transmission subassembly is including locating cooling medium conveying channel in the stiffening beam, the cooling medium transmission subassembly is still including seting up in on the stiffening beam and with a plurality of second cooling interfaces that the first cooling interface corresponds the setting, second cooling interface intercommunication cooling medium conveying channel
According to an aspect of the above technical solution, the reinforcement beam is further provided with a cooling medium interface that is communicated with the cooling medium conveying channel, the first cooling interface includes a first cooling inlet and a first cooling outlet, and the second cooling interface includes a second cooling inlet and a second cooling outlet that are disposed corresponding to the first cooling inlet and the first cooling outlet.
According to an aspect of the above technical solution, the first cooling inlet and the first cooling outlet are both provided with sealing rings.
According to an aspect of the above technical solution, the outer frame has an outer diameter larger than the outer diameters of the front suspension assembly and the rear suspension assembly, and the outer frame includes a front transfer bracket, a rear transfer bracket, and a side beam connecting the front transfer bracket and the rear transfer bracket.
According to an aspect of the foregoing disclosure, the reinforcement structure further includes a fixing structure for connecting the outer frame, the front suspension assembly, and the rear suspension assembly, the fixing structure including a front end interface provided on the front adapter bracket and a rear end interface provided on the rear adapter bracket
According to an aspect of the above technical solution, a chassis front end assembly is provided on one side of the front suspension assembly, and the front end interface includes a first mechanical interface and a second mechanical interface;
the chassis front end fixed component comprises a first fixed frame, a first assembly part connected with a vehicle body is arranged on one side of the first fixed frame, a second assembly part connected with the front suspension component and a third assembly part connected with the front switching support are further arranged on the first fixed frame, and the third assembly part comprises a first assembly port and a second assembly port which are matched with the first mechanical interface and the second mechanical interface.
According to an aspect of the above technical solution, a chassis rear end assembly is provided on one side of the rear suspension assembly, and the rear end interface includes a third mechanical interface and a fourth mechanical interface;
the chassis rear end fixed component comprises a second fixed frame, a fourth assembly part connected with a vehicle body is arranged on one side of the second fixed frame, a fifth assembly part connected with one end of the rear suspension component and a sixth assembly part connected with the rear transfer support are further arranged on the second fixed frame, the sixth assembly part comprises a third assembly port matched with the third mechanical interface, and one side, far away from the fifth assembly part, of the rear suspension component is fixed on the fourth mechanical interface.
According to an aspect of the above technical scheme, the electric chassis further comprises a connecting component arranged on one side of the outer frame, the connecting component comprises a BDU power distribution module and a connector connected with the BDU power distribution module, a plurality of battery modules are connected to the BDU power distribution module through copper bar components, and a high-voltage interface and a communication interface are arranged on the connector.
The invention further provides an electric automobile, which comprises an automobile body and the electric chassis in the technical scheme, wherein the automobile body is fixed on the electric chassis.
Drawings
Fig. 1 is a schematic structural view of an electric chassis according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a reinforcing structure according to a first embodiment of the present invention;
FIG. 3 is a schematic view showing the structure of a transverse reinforcing beam according to a first embodiment of the present invention;
FIG. 4 is a schematic structural view of a reinforcing structure and a fixing structure according to a first embodiment of the present invention;
FIG. 5 is a schematic structural view of a reinforcing structure and a fixing structure according to a first embodiment of the present invention;
fig. 6 is an assembly schematic view of a reinforcement structure and a battery module according to a first embodiment of the present invention;
fig. 7 is a schematic view illustrating a structure of a battery module according to a first embodiment of the present invention;
FIG. 8 is an enlarged view of portion A of FIG. 7;
FIG. 9 is a cross-sectional view of a cooling plate according to a first embodiment of the present invention;
fig. 10 is an assembled sectional view of a battery module and a lateral reinforcing beam according to a first embodiment of the present invention;
FIG. 11 is an enlarged view of a portion of FIG. 10;
fig. 12 is an assembled sectional view of the reinforcement structure and the battery module according to the first embodiment of the present invention;
FIG. 13 is a schematic view showing the structure of the reinforcing structure, the chassis front end fixing assembly and the chassis rear end fixing assembly according to the first embodiment of the present invention;
FIG. 14 is a schematic view showing the structure of a chassis front end fixing assembly according to the first embodiment of the present invention;
FIG. 15 is a schematic view of a portion of an assembled front suspension assembly and reinforcement structure according to a first embodiment of the present invention;
FIG. 16 is a schematic view showing the structure of a chassis rear end fixing assembly according to the first embodiment of the present invention;
FIG. 17 is a schematic view of a portion of an assembled rear suspension assembly and reinforcing structure according to a first embodiment of the present invention;
FIG. 18 is an enlarged schematic view of the reinforcing structure, the chassis front end fixing assembly and the chassis rear end fixing assembly and portions thereof according to the first embodiment of the present invention;
FIG. 19 is a schematic view showing the assembly of the electric chassis, the driving module and the wheel module according to the first embodiment of the present invention;
fig. 20 is a schematic structural diagram of an electric vehicle according to a second embodiment of the present invention;
FIG. 21 is a schematic view of a spatial expansion of a battery module;
description of main reference numerals:
Figure BDA0003350727820000051
Figure BDA0003350727820000061
the invention will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 19, an electric chassis according to a first embodiment of the present invention includes a front suspension assembly 20, a rear suspension assembly 30, and a reinforcing structure 10 disposed between the front suspension assembly 20 and the rear suspension assembly 30, wherein the reinforcing structure 10 includes an outer frame and a plurality of reinforcing beams 11 disposed in the outer frame, a plurality of accommodating spaces are formed between the plurality of reinforcing beams 11, the accommodating spaces are used for accommodating a battery module 60, and a cooling medium transmission assembly connected with the battery module 60 is further disposed in the reinforcing beams 11.
Specifically, through the reinforced structure 10 in the electric chassis, the protection shell capable of accommodating the battery module 60 is designed, the battery module 60 is protected, the rigidity of the outer frame of the reinforced structure 10 is improved simultaneously after the battery module 60 is installed, the outer frame of the reinforced structure 10 is used for realizing the bearing and protection of the battery module 60, the outer frame is reinforced simultaneously, the electric chassis is further reinforced, compared with the prior art, the shell capable of independently protecting the battery module 60 is reduced, the integral mode is improved by combining the outer frame in the reinforced structure 10 with the battery module 60, the weight of the whole automobile is reduced, the arrangement space of the battery module 60 is relatively increased, the endurance mileage of the electric automobile is increased, compared with the prior art, the battery module 60 is arranged on the inner side of a chassis beam, the accommodation space between the reinforcing beams 11 is utilized, the ground clearance of the automobile body and the space in the automobile are ensured, meanwhile, the cooling interface of the battery module 60 is in butt joint with the cooling medium transmission assembly and the cooling medium channel are realized by arranging the cooling medium transmission assembly in the reinforcing beams 11, the cooling pipeline is omitted, the cooling pipeline is not influenced, the installation cost is reduced, and the installation cost is not influenced, and the leakage is avoided. When the automobile body is collided, under the prerequisite that prevents that battery module 60 is impaired through stiffening beam 11 to battery module 60, protect cooling transmission subassembly simultaneously, prevent that cooling medium from revealing to further improved integration between each part, increased battery module 60's arrangement space, be favorable to the lightweight of whole car, thereby improved electric automobile's continuation of journey mileage.
In this embodiment, the battery module 60 includes a battery core (not shown) and a cooling plate 62 disposed at the lower side of the battery core, a first cooling interface is disposed on the cooling plate 62, the cooling medium transmission assembly includes a cooling medium conveying channel 131 disposed in the reinforcing beam 11, the cooling medium transmission assembly further includes a plurality of second cooling interfaces disposed on the reinforcing beam 11 and corresponding to the first cooling interfaces, and the second cooling interfaces are communicated with the cooling medium conveying channel 131, and specifically, the cooling medium conveying channel 131 includes a cooling medium input channel 135 and a cooling medium output channel 136.
Further, the reinforcement beam 11 is further provided with a cooling medium interface 132 that is communicated with the cooling medium conveying channel 131, the first cooling interface includes a first cooling inlet 621 and a first cooling outlet 622, and the second cooling interface includes a second cooling inlet 133 and a second cooling outlet 134 that are disposed corresponding to the first cooling inlet 621 and the first cooling outlet 622. In addition, the cooling medium interface 132 specifically includes a liquid inlet 137 and a liquid outlet 138 connected to the cooling system of the whole vehicle, the battery module 60 further includes a mounting surface 61 disposed on the outer side of the battery module 60, the mounting surface 61 is used for being assembled with the stiffening beam 11 in the outer frame, the rigidity of the outer frame of the stiffening structure 10 is improved after the battery module 60 is mounted, the outer frame of the stiffening structure 10 supports and protects the battery module 60, and the battery module 60 strengthens the outer frame and further strengthens the electric chassis.
In some application scenarios of the present embodiment, the cooling medium interface 132 is used for connecting a cooling system of a whole vehicle, and a cooling medium in the cooling system flows into the cooling medium input channel 135 from the liquid inlet 137, flows into the cooling plate 62 through the first cooling inlet 621 further through the second cooling outlet 134, circulates in the internal flow channel of the cooling plate 62, exchanges heat with the cooling plate 62, flows out from the first cooling outlet 622 to the second cooling inlet 133, further merges into the cooling medium output channel 136, and flows out from the liquid outlet 138, thereby completing the circulation flow of the cooling medium.
In addition, the first cooling inlet 621 and the first cooling outlet 622 are both provided with a sealing ring 623, the sealing rings 623 are respectively used for coupling with the second cooling inlet 133 and the second cooling outlet 134, in some application scenarios of this embodiment, the upper and lower sides of the outer frame are respectively provided with an upper sealing component 40 and a lower sealing component 41, the battery module 60 is mounted on the lower sealing component 41 of the outer frame from bottom to top, and specifically, the first cooling interface and the second cooling interface on the cooling plate 62 are fixed on the lower sealing component 41 through a plurality of fasteners 63, so that the cooling medium accommodating cavity inside the cooling plate 62 is communicated with the cooling medium conveying channel 131 inside the reinforcing beam 11, and meanwhile, the sealing rings 623 are bonded with the inner walls of the second cooling inlet 133 and the second cooling outlet 134 to realize sealing, thereby avoiding leakage of cooling medium.
In this embodiment, the outer frame has an outer diameter larger than the outer diameters of the front suspension assembly 20 and the rear suspension assembly 30, and includes a front adapter bracket 15, a rear adapter bracket 14, and a side rail 16 connecting the front adapter bracket 15 and the rear adapter bracket 14. The outer frame comprises a front transfer support 15 and a rear transfer support 14 which are arranged front and back, and side beams 16 arranged on two sides of the front transfer support 15 and the rear transfer support 14, wherein the front transfer support 15, the rear transfer support 14 and the side beams 16 can be connected through one or more of the existing connecting technologies such as welding, cementing, riveting, fastening connection and the like. The outer frame is also provided with a plurality of fifth mechanical interfaces 76 for connection to the vehicle body. Since the outer frame is required to carry the battery module 60, in the present embodiment, the outer diameter of the outer frame is set to be larger than the outer diameters of the front suspension assembly 20 and the rear suspension assembly 30, thereby enlarging the arrangement space of the battery module 60. In addition, in this embodiment, the outer frame further includes cross beams 17 disposed on two sides of the inner portion of the outer frame, and the cross beams 17 are used for further enhancing the strength of the outer frame, avoiding protection of the relatively weak side of the side face of the vehicle body, and protecting the battery module 60 and the passenger compartment when the vehicle collides with the side face.
In addition, the reinforcement beam 11 in this embodiment includes two longitudinal reinforcement beams 12 disposed in the outer frame, and one transverse reinforcement beam 13 disposed in the middle of the outer frame, and the cooling medium conveying channel 131 is disposed on the transverse reinforcement beam 13, and in some application scenarios of this embodiment, the specific position of the reinforcement beam 11 may be adjusted according to the size of the battery module 60, so as to satisfy the battery module 60 bearing different sizes, and specifically, the transverse reinforcement beam 13 may be offset to one side of the outer frame, so as to adapt to the battery modules 60 having different sizes and being respectively disposed on two sides of the accommodating space.
In this embodiment, the reinforcement structure 10 further includes a fixing structure for connecting the outer frame, the front suspension assembly 20 and the rear suspension assembly 30, and the fixing structure includes a front end interface 70 disposed on the front adapter bracket 15 and a rear end interface 73 disposed on the rear adapter bracket 14.
Specifically, a chassis front end fixing assembly 91 is disposed on one side of the front suspension assembly 20, and the front end interface 70 includes a first mechanical interface 71 and a second mechanical interface 72; the chassis front end fixing assembly 91 includes a first fixing frame 81, a first assembling portion 82 connected to the vehicle body is provided on one side of the first fixing frame 81, a second assembling portion 83 connected to the front suspension assembly 20 and a third assembling portion connected to the front adapting bracket 15 are further provided on the first fixing frame 81, and the third assembling portion includes a first assembling port 84 and a second assembling port 85 adapted to the first mechanical interface 71 and the second mechanical interface 72; in some application scenarios of the present embodiment, the first mechanical interface 71 and the first assembly port 84 are connected by a structural adhesive and a drill screw 90; the second mechanical interface 72 is connected to the second fitting port 85 by a bolt;
a chassis rear end fixing assembly 92 is arranged on one side of the rear suspension assembly 30, and the rear end interface 73 comprises a third mechanical interface 731 and a fourth mechanical interface 732; the chassis rear end fixing assembly 92 includes a second fixing frame 86, a fourth assembling portion 87 connected to the vehicle body is provided on one side of the second fixing frame 86, a fifth assembling portion 88 connected to one end of the rear suspension assembly 30 and a sixth assembling portion connected to the rear adapting bracket 14 are further provided on the second fixing frame 86, the sixth assembling portion includes a third assembling port 89 adapted to the third mechanical interface 731, and a side of the rear suspension assembly 30 away from the fifth assembling portion 88 is fixed to the fourth mechanical interface 732; in some application scenarios of the present embodiment, the third mechanical interface 731 is connected to the third fitting port 89 through a structural adhesive and a trephine screw 90.
In this embodiment, the front suspension assembly 20 and the rear suspension assembly 30 are steel members to meet the load-bearing requirement, the outer frame and the reinforcement beam 11 are extruded aluminum profile members to meet the light weight requirement of the automobile, and the outer frame is connected with the front suspension assembly 20 and the rear suspension assembly 30 by a cold connection process through the first fixing frame 81 and the second fixing frame 86.
In addition, in this embodiment, the electric chassis further includes a battery management system 50, the battery management system 50 includes a connection assembly 51 disposed on one side of the outer frame, the connection assembly 51 includes a BDU power distribution module and a connector connected to the BDU power distribution module, the plurality of battery modules 60 are connected to the BDU power distribution module through a copper bar assembly 52, and the connector is provided with a high voltage interface 74 and a communication interface 75. Specifically, a plurality of power interfaces 64 are arranged below the battery module 60, the power interfaces 64 are connected with the BDU battery distribution module through the copper bar assembly 52, the battery module is connected with an energy storage system with proper voltage and capacity through the copper bar assembly 52, the total positive electrode and the total negative electrode are connected to the BDU battery distribution module, the BDU battery distribution module is connected with the connector through the copper bar drill 52, the connector is provided with a high-voltage interface 74 and a communication interface 75 which are used for being connected with the battery module in an automobile, and the battery management system 50 can control electric devices in the BDU battery distribution module to act to realize whether the power interfaces 64 are connected with the battery module.
In addition, the electric chassis in this embodiment further includes a driving module 93 and a wheel module 94, the battery module 60 is connected to the driving module 93, and the driving module 93 is connected to the wheel module 94, so that the wheel module 94 rotates to drive the electric vehicle to move.
In summary, in the electric chassis according to the above embodiment of the present invention, the electric chassis simultaneously meets the requirements of bearing and light weight through the steel-aluminum hybrid structure, the reinforcing structure 10 between the front suspension assembly 20 and the rear suspension assembly 30 is made of aluminum alloy members and is configured to be favorable for accommodating the battery module 60, and the reinforcing structure 10 is connected to the front suspension assembly 20 and the rear suspension assembly 30 of the steel members through the chassis front end fixing assembly 91 and the chassis rear end fixing assembly 92. Through the reinforced structure 10 in the electric chassis, the protection shell capable of accommodating the battery module 60 is designed, the rigidity of the outer frame of the reinforced structure 10 is improved simultaneously after the battery module 60 is installed, the outer frame of the reinforced structure 10 is used for bearing and protecting the battery module 60, the outer frame is reinforced, the electric chassis is further reinforced, compared with the prior art, the shell for independently protecting the battery module 60 is reduced, the integral mode is improved by combining the outer frame in the reinforced structure 10 with the battery module 60, the weight of the whole automobile is reduced, the arrangement space of the battery module 60 is relatively increased, the endurance mileage of the electric automobile is increased, compared with the prior art, the battery module 60 is arranged on the inner side of a chassis beam, the battery module 60 is arranged by utilizing the accommodating space between the reinforcing beams 11, the ground clearance of the automobile body and the space in the automobile are ensured, meanwhile, the cooling interface of the battery module 60 and the cooling medium transmission assembly are connected in the reinforcing beams 11, the cooling pipeline is connected in a butt joint mode and the cooling medium runner is realized, the cooling pipeline is omitted, the adverse effects of the arrangement, the arrangement cost, the installation cost and the leakage prevention are avoided, and the like. When the automobile body is collided, protect battery module 60 through stiffening beam 11, under the impaired prerequisite of preventing battery module 60, protect cooling transmission subassembly simultaneously, prevent that cooling medium from revealing to further improved integration between each part, increased battery module 60's arrangement space, be favorable to the lightweight of whole car, thereby improved electric automobile's continuation of journey mileage.
The second embodiment of the present application also provides an electric vehicle, as shown in fig. 20, the electric vehicle 9 includes a vehicle body 95 and an electric chassis in the above embodiment, and the electric chassis is fixed on the vehicle body 95. Specifically, the vehicle body 95 is connected and fixed to the outer frame, the chassis front end fixing unit 91, and the chassis rear end fixing unit 92 via the fifth mechanical interfaces 76, the first fitting portions 82, and the fourth fitting portions 87, respectively, on the electric chassis. After the vehicle body 95 is connected with the electric chassis, rigidity and strength are improved, and loads such as jolt, torsion and impact on the road surface are absorbed by the electric chassis, so that the vehicle body 95 can be further light.
As can be easily understood, as shown in fig. 21, a vehicle body 95 in the prior art includes a left side rail 951, a right side rail 952, a front end rail 953, and a rear end rail 954, wherein the widths of the left side rail 951 and the right side rail 952 are respectively M, and the widths of the front end rail 953 and the rear end rail 954 are respectively N; the battery module 60 is disposed in an inner space surrounded by the left side rail 951, the right side rail 952, the front end rail 953, and the rear end rail 954; gaps A are reserved between the battery module 60 and the left side longitudinal beam 951 and the right side longitudinal beam 952 of the vehicle body 95 respectively, and gaps B are reserved between the battery module 60 and the front end cross beam 953 and the rear end cross beam 954 of the vehicle body 95 respectively; the maximum width dimension of the battery module 60 is X-2×m-2×a, and the maximum length dimension of the battery module 60 is Y-2×n-2×b, limited to the above arrangement conditions; the length and width dimensions of the battery module 60 limit the energy of the battery module 60, further limiting the range; the battery module 60, the chassis front end assembly 91 and the chassis rear end assembly 92 of the electric automobile form a chassis bearing body 93, the width dimension of the battery module 60 can be expanded to X, and the length dimension of the battery module 60 can be expanded to Y; the frame of the battery module 60 replaces a left side longitudinal beam 951, a right side longitudinal beam 952, a front end cross beam 953 and a rear end cross beam 954 of the vehicle body 95, so that the functions of bearing and collision protection are realized; the electric chassis in the application avoids space waste caused by structural redundancy of the vehicle body and the battery module 60, expands battery arrangement space while realizing light weight of the electric vehicle, and further increases endurance mileage of the electric vehicle.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (4)

1. The electric chassis is applied to an electric automobile and is characterized by comprising a front suspension assembly, a rear suspension assembly and a reinforcing structure arranged between the front suspension assembly and the rear suspension assembly, wherein the reinforcing structure comprises an outer frame and a plurality of reinforcing beams arranged in the outer frame, a plurality of accommodating spaces are formed between the plurality of reinforcing beams and are used for accommodating a battery module, a cooling medium transmission assembly connected with the battery module is further arranged in the reinforcing beams, the battery module comprises an electric core and a cooling plate arranged on the lower side of the electric core, a first cooling interface is arranged on the cooling plate, the cooling medium transmission assembly comprises a cooling medium transmission channel arranged in the reinforcing beams, the cooling medium transmission assembly further comprises a plurality of second cooling interfaces which are arranged on the reinforcing beams and are correspondingly arranged with the first cooling interfaces, the second cooling interface is communicated with the cooling medium conveying channel, the reinforcing beam is also provided with a cooling medium interface communicated with the cooling medium conveying channel, the first cooling interface comprises a first cooling inlet and a first cooling outlet, the second cooling interface comprises a second cooling inlet and a second cooling outlet which are correspondingly arranged with the first cooling inlet and the first cooling outlet, the outer diameter of the outer frame is larger than the outer diameters of the front suspension assembly and the rear suspension assembly, the outer frame comprises a front transfer support, a rear transfer support and a side beam connected with the front transfer support and the rear transfer support, the reinforcing structure also comprises a fixing structure connected with the outer frame, the front suspension assembly and the rear suspension assembly, the fixing structure comprises a front end interface arranged on the front switching support and a rear end interface arranged on the rear switching support, one side of the front suspension assembly is provided with a chassis front end fixing assembly, and the front end interface comprises a first mechanical interface and a second mechanical interface;
the chassis front end fixing assembly comprises a first fixing frame, a first assembly part connected with a vehicle body is arranged on one side of the first fixing frame, a second assembly part connected with the front suspension assembly and a third assembly part connected with the front switching support are further arranged on the first fixing frame, and the third assembly part comprises a first assembly port and a second assembly port which are matched with the first mechanical interface and the second mechanical interface;
a chassis rear end fixing assembly is arranged on one side of the rear suspension assembly, and the rear end interface comprises a third mechanical interface and a fourth mechanical interface;
the chassis rear end fixed component comprises a second fixed frame, a fourth assembly part connected with a vehicle body is arranged on one side of the second fixed frame, a fifth assembly part connected with one end of the rear suspension component and a sixth assembly part connected with the rear transfer support are further arranged on the second fixed frame, the sixth assembly part comprises a third assembly port matched with the third mechanical interface, and one side, far away from the fifth assembly part, of the rear suspension component is fixed on the fourth mechanical interface.
2. The electric chassis of claim 1, wherein the first cooling inlet and the first cooling outlet are each provided with a sealing ring.
3. The electric chassis of any of claims 1-2, further comprising a connection assembly disposed on one side of the outer frame, the connection assembly comprising a BDU power distribution module and a connector connected to the BDU power distribution module, the plurality of battery modules being connected to the BDU power distribution module by copper bar assemblies, the connector having a high voltage interface and a communication interface.
4. An electric vehicle comprising a vehicle body, characterized in that the electric vehicle further comprises an electric chassis according to any one of claims 1-3, the vehicle body being fixed to the electric chassis.
CN202111336620.9A 2021-11-12 2021-11-12 Electric chassis and automobile Active CN114162217B (en)

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CN115214333B (en) * 2022-03-31 2024-01-12 长城汽车股份有限公司 Middle structure of lower car body and car
CN114802450B (en) * 2022-04-06 2023-07-25 岚图汽车科技有限公司 Electric platform bottom plate structure
CN114701569B (en) * 2022-04-12 2023-07-18 三一技术装备有限公司 Vehicle and chassis structure
US20240025479A1 (en) * 2022-07-25 2024-01-25 Snap-On Incorporated Reinforcing frame fixture for electric vehicles
CN115959198A (en) * 2023-01-04 2023-04-14 刘玉喜 Self-air-cooling electric automobile chassis

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CN102275612A (en) * 2011-01-24 2011-12-14 王建排 Electromobile chassis
JP6522972B2 (en) * 2015-02-05 2019-05-29 本田技研工業株式会社 Battery unit and battery frame
CN206179943U (en) * 2016-10-27 2017-05-17 深圳市沃特玛电池有限公司 Chassis liquid cooling structure
CN108891248A (en) * 2018-08-27 2018-11-27 海马新能源汽车有限公司 Variable electric platforms can be changed electric platforms, body frame and electric car
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