CN114162217A - Electric chassis and automobile - Google Patents

Electric chassis and automobile Download PDF

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Publication number
CN114162217A
CN114162217A CN202111336620.9A CN202111336620A CN114162217A CN 114162217 A CN114162217 A CN 114162217A CN 202111336620 A CN202111336620 A CN 202111336620A CN 114162217 A CN114162217 A CN 114162217A
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CN
China
Prior art keywords
cooling
chassis
assembly
electric
battery module
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.)
Granted
Application number
CN202111336620.9A
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Chinese (zh)
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CN114162217B (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 date
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Priority to CN202111336620.9A priority Critical patent/CN114162217B/en
Publication of CN114162217A publication Critical patent/CN114162217A/en
Application granted granted Critical
Publication of CN114162217B publication Critical patent/CN114162217B/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)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (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, wherein 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 among the plurality of reinforcing beams, the accommodating spaces are used for accommodating battery modules, and cooling medium transmission assemblies connected with the battery modules are further arranged in the reinforcing beams. Through the additional strengthening with in the electronic chassis, design into the protection casing that can hold the battery module, in the structural strength on electronic chassis, protect the battery module, reduced the casing that carries out independent protection to the battery module among the prior art, reduced the weight of whole car in other words, and the relative increase in space of arranging of battery has increased electric automobile's continuation of the 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 a power source of the whole automobile. The space that electric automobile can be used to hold the battery has restricted the energy of on-vehicle battery module, increases battery quantity and need put in order car additional structure in order to realize bearing safely, and the increase of putting in order car weight further causes the energy consumption to increase, has restricted electric automobile's continuation of the journey mileage.
Among the prior art, automobile body structure, frame and battery module design into solitary subassembly usually, assemble the assembly again, however the battery module needs the isolated design to bear the weight of the casing and protect, and corresponding additional strengthening has also been arranged simultaneously to automobile body structure and frame, has restricted the battery and has arranged space and whole car lightweight to restriction electric automobile's continuation of the journey mileage.
The prior art generally adopts a non-bearing type vehicle body structure, namely a split type vehicle frame and a vehicle body, wherein the vehicle frame provides main bearing capacity; 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 of stamping, welding and the like, and are constructed into a non-closed special-shaped beam with a cross section similar to a square shape; above-mentioned frame structure is unfavorable for providing the closed cavity who is fit for holding the battery through the mode that increases lid and bottom plate simply, both is difficult to reform transform into the lightweight electric chassis of integrated battery.
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 separately designed with a bearing and protective shell for protection to form a battery pack, the battery pack forms the weight burden of the electric automobile, and the electric automobile needs to be reinforced with 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 meanwhile, the battery needs to be provided with a thermal management device to maintain the proper operating temperature, and the thermal management device occupies a space and deviates from the aim of increasing the battery energy in a limited space, so that the endurance mileage of the electric vehicle is limited.
In order to achieve the purpose, the invention is realized by the following technical scheme: 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 among the plurality of reinforcing beams, the accommodating spaces are used for accommodating battery modules, and cooling medium transmission assemblies connected with the battery modules are further arranged in the reinforcing beams.
Compared with the prior art, the invention has the beneficial effects that: the reinforcing structure in the electric chassis is designed into the protective shell capable of accommodating the battery module to protect the battery module, the rigidity of the outer frame of the reinforcing structure is improved after the battery module is installed, the outer frame of the reinforcing structure can bear and protect the battery module, the outer frame is reinforced while the battery module is further reinforced, compared with the prior art, the shell capable of independently protecting the battery module is reduced, the overall mode is improved by combining the outer frame in the reinforcing structure and the battery module, the weight of the whole automobile is reduced, the arrangement space of the battery is relatively increased, the endurance mileage of the electric automobile is increased, compared with the prior art, the battery module is arranged on the inner side of a cross beam of the chassis, the battery module is arranged by utilizing the accommodating space between the reinforcing beams, the ground clearance of the automobile body and the space in the automobile are ensured, meanwhile, the cooling medium transmission assembly connected with the battery module is arranged in the stiffening beam, and the cooling interface of the battery module is butted with the cooling medium transmission assembly while the battery module is installed, so that the cooling medium flow channel is communicated, a cooling pipeline is omitted, and adverse effects of the cooling pipeline in the aspects of cost, arrangement space, installation process, leakage prevention and the like are optimized. When the automobile body receives the collision, protect the battery module through the stiffening beam and prevent under the impaired prerequisite of battery module, protect cooling transmission assembly simultaneously, prevent that coolant from revealing to further improve integrating between each part, increased the space of arranging of battery module, be favorable to the lightweight of whole car, thereby improve electric automobile's continuation of the journey mileage.
According to an aspect of the foregoing technical solution, the battery module includes an electrical core and a cooling plate disposed on a lower side of the electrical core, the cooling plate is provided with a first cooling interface, the cooling medium transmission assembly includes a cooling medium conveying channel disposed in the reinforcing beam, the cooling medium transmission assembly further includes a plurality of second cooling interfaces disposed on the reinforcing beam and corresponding to the first cooling interfaces, and the second cooling interfaces are communicated with the cooling medium conveying channel
According to one aspect of the above technical solution, the reinforcing beam is further provided with a cooling medium interface communicated with the cooling medium conveying passage, 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 which are provided corresponding to the first cooling inlet and the first cooling outlet.
According to the one hand of above-mentioned technical scheme, all be equipped with the sealing washer on first cooling inlet and the first cooling outlet.
According to one aspect of the above technical solution, the outer frame has an outer diameter larger than outer diameters of the front suspension assembly and the rear suspension assembly, and the outer frame includes a front adapter bracket, a rear adapter bracket, and a side beam connecting the front adapter bracket and the rear adapter bracket.
According to one aspect of the above technical solution, the reinforcing structure further comprises a fixing structure connecting the outer frame, the front suspension assembly and the rear suspension assembly, and the fixing structure comprises a front end interface arranged on the front adapter bracket and a rear end interface arranged on the rear adapter bracket
According to one aspect of the technical scheme, a chassis front end fixing assembly is arranged on one side of the front suspension assembly, and the front end interface comprises a first mechanical interface and a second mechanical interface;
the front end fixing assembly of the chassis comprises a first fixing frame, a first assembling portion connected with a vehicle body is arranged on one side of the first fixing frame, a second assembling portion connected with the front suspension assembly and a third assembling portion connected with the front rotary joint support are further arranged on the first fixing frame, and the third assembling portion comprises a first assembling port and a second assembling port which are matched with the first mechanical interface and the second mechanical interface.
According to one aspect of the technical scheme, 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 fixing component comprises a second fixing frame, a fourth assembling portion connected with a vehicle body is arranged on one side of the second fixing frame, a fifth assembling portion connected with one end of the rear suspension component and a sixth assembling portion connected with the rear switching support are further arranged on the second fixing frame, the sixth assembling portion comprises a third assembling port matched with the third mechanical interface, and one side of the fifth assembling portion, away from the rear suspension component, is fixed to the fourth mechanical interface.
According to above-mentioned technical scheme's an aspect, electronic chassis is still including locating the coupling assembling of outer frame one side, coupling assembling include BDU distribution module and with the connector that BDU distribution module connects, it is a plurality of the battery module is connected to through the copper bar subassembly BDU distribution module, be equipped with high voltage interface and communication interface 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 structural view of a cross reinforcement 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 view of the reinforcing structure and the battery module according to the first embodiment of the present invention;
fig. 7 is a schematic structural view 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 in a first embodiment of the present invention;
fig. 10 is an assembled sectional view of a battery module and a cross reinforcing beam according to a first embodiment of the present invention;
FIG. 11 is a partially enlarged view of FIG. 10;
fig. 12 is an assembled sectional view of a reinforcing structure and a battery module according to a first embodiment of the present invention;
FIG. 13 is a schematic structural diagram of a reinforcing structure, a chassis front end fixing assembly and a chassis rear end fixing assembly according to the first embodiment of the present invention;
FIG. 14 is a schematic structural view of a chassis front end fixing assembly according to a first embodiment of the present invention;
FIG. 15 is a partial assembled view of the front suspension assembly and the reinforcing structure in accordance with the first embodiment of the present invention;
FIG. 16 is a schematic structural view of a rear end fixing assembly of the chassis according to the first embodiment of the present invention;
FIG. 17 is a partial assembled schematic view of the rear suspension assembly and reinforcing structure in accordance with the first embodiment of the present invention;
FIG. 18 is an enlarged view of the reinforcing structure, the front end fixing assembly of the chassis, the rear end fixing assembly of the chassis, and parts thereof according to the first embodiment of the present invention;
FIG. 19 is a schematic view of 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 the main element symbols:
Figure BDA0003350727820000051
Figure BDA0003350727820000061
the following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. 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 "secured to" 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 as used herein are 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 in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" 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 is shown, including a front suspension assembly 20, a rear suspension assembly 30, and a reinforcement structure 10 disposed between the front suspension assembly 20 and the rear suspension assembly 30, where the reinforcement structure 10 includes an outer frame and a plurality of reinforcement beams 11 disposed in the outer frame, a plurality of accommodating spaces are formed between the plurality of reinforcement beams 11, the accommodating spaces are used for accommodating battery modules 60, and a cooling medium transmission assembly connected to the battery modules 60 is further disposed in the reinforcement beams 11.
Specifically, the reinforcing structure 10 in the electric chassis is designed into a protective shell capable of accommodating the battery module 60 to protect the battery module 60, the rigidity of the outer frame of the reinforcing structure 10 is improved after the battery module 60 is installed, the outer frame of the reinforcing structure 10 is used for bearing and protecting the battery module 60, the outer frame of the battery module 60 is also used for reinforcing the outer frame and further reinforcing the electric chassis, compared with the prior art, the shell for independently protecting the battery module 60 is reduced, the overall mode is improved by combining the outer frame in the reinforcing structure 10 and the battery module 60, the weight of the whole vehicle is reduced, the arrangement space of the battery module 60 is relatively increased, the endurance mileage of the electric vehicle is increased, compared with the prior art, in which the battery module 60 is arranged on the inner side of a cross beam of the chassis, and the battery module 60 is arranged by using the accommodating space between the reinforcing beams 11, the ground clearance of the vehicle body and the space in the vehicle are guaranteed, meanwhile, the cooling medium transmission assembly connected with the battery module 60 is arranged in the reinforcing beam 11, the cooling interface of the battery module 60 is in butt joint with the cooling medium transmission assembly when the battery module 60 is installed, and the cooling medium flow channel is communicated, so that a cooling pipeline is omitted, and the adverse effects of the cooling pipeline in the aspects of cost, arrangement space, installation process, leakage prevention and the like are optimized. When the automobile body receives the collision, protect battery module 60 through stiffening beam 11 and prevent under the impaired prerequisite of battery module 60, protect cooling transmission assembly simultaneously, prevent that coolant from revealing to further improve integrating between each part, increased battery module 60's the space of arranging, be favorable to the lightweight of whole car, thereby improve electric automobile's continuation of the journey mileage.
In this embodiment, the battery module 60 includes a battery cell (not shown), a cooling plate 62 disposed on a lower side of the battery cell, a first cooling interface is disposed on the cooling plate 62, the cooling medium transfer assembly includes a cooling medium conveying channel 131 disposed in the reinforcing beam 11, the cooling medium transfer assembly further includes a plurality of second cooling interfaces disposed on the reinforcing beam 11 and corresponding to the first cooling interface, 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.
Furthermore, the reinforcing beam 11 is further provided with a cooling medium interface 132 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 which are correspondingly provided with 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 entire vehicle cooling system, the battery module 60 further includes an installation surface 61 disposed outside the battery module 60, the installation surface 61 is used for being assembled with the reinforcing beam 11 in the outer frame in a matching manner, after the battery module 60 is installed, the rigidity of the outer frame of the reinforcing structure 10 is improved, the outer frame of the reinforcing structure 10 is used for bearing and protecting the battery module 60, and the outer frame of the battery module 60 is also used for reinforcing the electric chassis.
In some application scenarios of this embodiment, the cooling medium interface 132 is used to connect a cooling system of a whole vehicle, and the cooling medium in the cooling system flows into the cooling medium input channel 135 from the liquid inlet 137, further flows into the cooling plate 62 through the second cooling outlet 134 via the first cooling inlet 621, circulates through 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 to 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, and the sealing ring 623 is respectively used for being coupled to the second cooling inlet 133 and the second cooling outlet 134, in some application scenarios of this embodiment, the upper side and the lower side of the outer frame are respectively provided with an upper sealing assembly 40 and a lower sealing assembly 41, the battery module 60 is mounted to the lower sealing assembly 41 of the outer frame from bottom to top, and is specifically fixed to the lower sealing assembly 41 by a plurality of fasteners 63, the first cooling interface and the second cooling interface on the cooling plate 62 are joined, 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 ring 623 is attached to the inner walls of the second cooling inlet 133 and the second cooling outlet 134 to realize sealing, so as to avoid leakage of the 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 beam 16 connecting the front adapter bracket 15 and the rear adapter bracket 14. The outer frame comprises a front adapter bracket 15 and a rear adapter bracket 14 which are arranged in the front and the rear, and also comprises side beams 16 which are arranged at two sides of the front adapter bracket 15 and the rear adapter bracket 14, wherein the front adapter bracket 15, the rear adapter bracket 14 and the side beams 16 can be connected through one or more of the existing connecting processes such as welding, gluing, riveting, fastening and the like. The outer frame is also provided with a number of fifth mechanical interfaces 76 for connection to the vehicle body. Since the outer frame described above needs to carry the battery modules 60, in the present embodiment, the arrangement space of the battery modules 60 is enlarged by setting the outer diameter of the outer frame to be larger than the outer diameters of the front suspension assemblies 20 and the rear suspension assemblies 30. In addition, in this embodiment, the outer frame further includes cross beams 17 disposed on two sides inside the outer frame, and the cross beams 17 are used to further reinforce the strength of the outer frame, so as to prevent the side of the vehicle body from being protected by the side with relatively weak protection, and protect the battery module 60 and the passenger compartment when the vehicle is in side impact.
In addition, the reinforcing beams 11 in this embodiment respectively include two longitudinal reinforcing beams 12 disposed inside the outer frame and one transverse reinforcing beam 13 disposed in the middle of the outer frame, and the cooling medium conveying channel 131 is disposed on the transverse reinforcing beam 13, in some application scenarios of this embodiment, the specific position of the reinforcing beam 11 can be adjusted according to the size of the battery module 60 to satisfy the requirement of carrying battery modules 60 with different sizes, and specifically, the transverse reinforcing beam 13 can be shifted to one side of the outer frame to adapt to the battery modules 60 with different sizes respectively disposed on two sides of the accommodating space.
In this embodiment, the reinforcing 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 arranged on one side of the front suspension assembly 20, and the front end interface 70 comprises a first mechanical interface 71 and a second mechanical interface 72; the chassis front end fixing component 91 comprises a first fixing frame 81, a first assembling portion 82 connected with a vehicle body is arranged on one side of the first fixing frame 81, a second assembling portion 83 connected with the front suspension component 20 and a third assembling portion connected with the front adapter bracket 15 are further arranged on the first fixing frame 81, and the third assembling portion comprises a first assembling port 84 and a second assembling port 85 which are matched with 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 mounting hole 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 disposed 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 adapter bracket 14 are further disposed on the second fixing frame 86, the sixth assembling portion includes a third assembling port 89 adapted to the third mechanical interface 731, and one side of the rear suspension assembly 30 away from the fifth assembling portion 88 is fixed to the fourth mechanical interface 732; in some applications of the present embodiment, the third mechanical interface 731 is coupled to the third mounting port 89 via a structural adhesive and a drill screw 90.
In this embodiment, the front suspension assembly 20 and the rear suspension assembly 30 are both made of steel to meet the load-bearing requirement, the outer frame and the reinforcing beam 11 are made of extruded aluminum profile to meet the requirement of light weight of the automobile, and the outer frame is connected to the front suspension assembly 20 and the rear suspension assembly 30 through the first fixing frame 81 and the second fixing frame 86 by a cold connection process.
Furthermore, in this embodiment, electric chassis still includes battery management system 50, battery management system 50 is including locating the coupling assembling 51 of outer frame one side, coupling assembling 51 include BDU distribution module and with the connector that BDU distribution module connects, it is a plurality of battery module 60 is connected to through copperbar subassembly 52 BDU distribution module, be equipped with high voltage interface 74 and communication interface 75 on the connector. Specifically, a plurality of power interfaces 64 are arranged below the battery module 60, the power interfaces 64 are connected with the BDU battery power distribution module through the copper bar assembly 52, the battery module is connected through the copper bar assembly 52 to form an energy storage system with proper voltage and capacity, the total positive electrode and the total negative electrode are connected to the BDU battery power distribution module, the BDU battery power distribution module is connected with the connector through the copper bar drilling 52, the high-voltage interface 74 and the communication interface 75 which are used for being connected with the battery module in the automobile are arranged on the connector, and the battery management system 50 can control the action of electric devices in the BDU battery power distribution module to realize whether the power interfaces 64 are communicated 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 embodiments of the present invention, the electric chassis meets the requirements of load bearing and light weight through a steel-aluminum hybrid structure, the reinforcing structure 10 located between the front suspension assembly 20 and the rear suspension assembly 30 is made of an aluminum alloy member and configured to be beneficial to accommodating the battery module 60, and the reinforcing structure 10 is connected to the front suspension assembly 20 and the rear suspension assembly 30 through the chassis front end fixing assembly 91 and the chassis rear end fixing assembly 92. By designing the reinforcing structure 10 in the electric chassis into a protective shell capable of accommodating the battery module 60, the rigidity of the outer frame of the reinforcing structure 10 is improved after the battery module 60 is installed, the outer frame of the reinforcing structure 10 realizes bearing and protection of the battery module 60, the outer frame of the battery module 60 is also strengthened at the same time, the electric chassis is further strengthened, compared with the prior art, the shell for independently protecting the battery module 60 is reduced, the overall mode is improved by combining the outer frame in the reinforcing structure 10 and the battery module 60, the weight of the whole vehicle is reduced, the arrangement space of the battery module 60 is relatively increased, the endurance mileage of the electric vehicle is increased, compared with the prior art that the battery module 60 is arranged at the inner side of a cross beam of the chassis, the battery module 60 is arranged by utilizing the accommodating space between the reinforcing beams 11, the ground clearance of the vehicle body and the space in the vehicle are ensured, meanwhile, the cooling medium transmission assembly connected with the battery module 60 is arranged in the stiffening beam 11, and the cooling interface of the battery module 60 is butted with the cooling medium transmission assembly while the battery module 60 is installed, so that the communication of a cooling medium flow passage is realized, a cooling pipeline is omitted, and the adverse effects of the cooling pipeline in the aspects of cost, arrangement space, installation process, leakage prevention and the like are optimized. When the automobile body receives the collision, protect battery module 60 through stiffening beam 11, prevent under the impaired prerequisite of battery module 60, protect cooling transmission assembly simultaneously, prevent that coolant from revealing to further improve the integration between each part, increased battery module 60's the space of arranging, be favorable to the lightweight of whole car, thereby improve electric automobile's continuation of the 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 the 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 through the plurality of fifth mechanical interfaces 76, the first mounting portion 82, and the fourth mounting portion 87 on the electric chassis. After the vehicle body 95 is connected to the electric chassis, the 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 lightened.
As shown in fig. 21, in a vehicle body 95 in the prior art, there are 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, where the width of each of the left side longitudinal beam 951 and the right side longitudinal beam 952 is M, and the width of each of the front end cross beam 953 and the rear end cross beam 954 is N; the battery module 60 is disposed in an inner space surrounded by the left side member 951, the right side member 952, the front end cross member 953, and the rear end cross member 954; gaps A are reserved between the battery module 60 and a left side longitudinal beam 951 and a right side longitudinal beam 952 of the vehicle body 95 respectively, and gaps B are reserved between the battery module 60 and a front end cross beam 953 and a rear end cross beam 954 of the vehicle body 95 respectively; limited to the above arrangement conditions, the maximum width dimension of the battery module 60 is X-2 xm-2 xa, and the maximum length dimension of the battery module 60 is Y-2 xn-2 xb; 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 component 91 and the chassis rear end component 92 of the electric automobile provided by the invention form a chassis bearing vehicle 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; and the electric chassis in this application has avoided the space waste that the structure redundancy of automobile body and battery module 60 caused, has expanded battery arrangement space when realizing electric automobile lightweight, has further increased electric automobile's continuation of the journey mileage.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

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 among the plurality of reinforcing beams, the accommodating spaces are used for accommodating battery modules, and cooling medium transmission assemblies connected with the battery modules are further arranged in the reinforcing beams.
2. The electric chassis according to claim 1, wherein the battery module comprises a battery core and a cooling plate disposed on a lower side of the battery core, a first cooling port is disposed on the cooling plate, the cooling medium conveying assembly comprises a cooling medium conveying channel disposed in the reinforcing beam, the cooling medium conveying assembly further comprises a plurality of second cooling ports disposed on the reinforcing beam and corresponding to the first cooling port, and the second cooling ports are communicated with the cooling medium conveying channel.
3. The electric chassis according to claim 2, wherein the reinforcing beam is further provided with a cooling medium port communicating with the cooling medium conveying passage, the first cooling port includes a first cooling inlet and a first cooling outlet, and the second cooling port includes a second cooling inlet and a second cooling outlet provided corresponding to the first cooling inlet and the first cooling outlet.
4. The electric chassis of claim 3, wherein a seal ring is disposed on each of the first cooling inlet and the first cooling outlet.
5. The electric chassis of claim 1, wherein an outer diameter of the outer frame is larger than outer diameters of the front suspension assembly and the rear suspension assembly, the outer frame including a front adapter bracket, a rear adapter bracket, and a side beam connecting the front adapter bracket and the rear adapter bracket.
6. The electric chassis of claim 5, wherein the reinforcement structure further comprises a fastening structure connecting the outer frame, the front suspension assembly and the rear suspension assembly, the fastening structure comprising a front end interface disposed on the front adapter bracket and a rear end interface disposed on the rear adapter bracket.
7. The electric chassis according to claim 6, wherein a chassis front end fixing component is arranged on one side of the front suspension component, and the front end interface comprises a first mechanical interface and a second mechanical interface;
the front end fixing assembly of the chassis comprises a first fixing frame, a first assembling portion connected with a vehicle body is arranged on one side of the first fixing frame, a second assembling portion connected with the front suspension assembly and a third assembling portion connected with the front rotary joint support are further arranged on the first fixing frame, and the third assembling portion comprises a first assembling port and a second assembling port which are matched with the first mechanical interface and the second mechanical interface.
8. The electric chassis according to claim 6, wherein a rear end fixing component of the chassis is arranged on one side of the rear suspension component, and the rear end interface comprises a third mechanical interface and a fourth mechanical interface;
the chassis rear end fixing component comprises a second fixing frame, a fourth assembling portion connected with a vehicle body is arranged on one side of the second fixing frame, a fifth assembling portion connected with one end of the rear suspension component and a sixth assembling portion connected with the rear switching support are further arranged on the second fixing frame, the sixth assembling portion comprises a third assembling port matched with the third mechanical interface, and one side of the fifth assembling portion, away from the rear suspension component, is fixed to the fourth mechanical interface.
9. The electric chassis according to any one of claims 1 to 8, further comprising a connecting assembly disposed on one side of the outer frame, wherein the connecting assembly comprises a BDU power distribution module and a connector connected with the BDU power distribution module, the plurality of battery modules are connected to the BDU power distribution module through a copper bar assembly, and a high-voltage interface and a communication interface are disposed on the connector.
10. An electric vehicle comprising a body, characterized in that the electric vehicle further comprises an electric chassis according to any one of claims 1 to 9, the 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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CN114701569A (en) * 2022-04-12 2022-07-05 三一技术装备有限公司 Vehicle and chassis structure
CN114802450A (en) * 2022-04-06 2022-07-29 岚图汽车科技有限公司 Electric platform bottom plate structure
CN115214333A (en) * 2022-03-31 2022-10-21 长城汽车股份有限公司 Middle structure of lower vehicle body and vehicle
GB2622138A (en) * 2022-07-25 2024-03-06 Snap On Incorporated Reinforcing frame fixture for electric vehicles

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CN113067052A (en) * 2021-03-23 2021-07-02 远景动力技术(江苏)有限公司 Power battery cooling system and vehicle
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JP2016141354A (en) * 2015-02-05 2016-08-08 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
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GB2622138A (en) * 2022-07-25 2024-03-06 Snap On Incorporated Reinforcing frame fixture for electric vehicles

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