CN113479054B - Battery pack mounting structure of electric automobile - Google Patents
Battery pack mounting structure of electric automobile Download PDFInfo
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- CN113479054B CN113479054B CN202110732849.8A CN202110732849A CN113479054B CN 113479054 B CN113479054 B CN 113479054B CN 202110732849 A CN202110732849 A CN 202110732849A CN 113479054 B CN113479054 B CN 113479054B
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- battery pack
- cylinder body
- connecting device
- mounting arm
- threshold
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention relates to an electric vehicle battery pack mounting structure which comprises a pair of threshold beams, a front baffle lower beam, a rear floor front beam and a connecting device, wherein the threshold beams are arranged on the front baffle lower beam; the front baffle lower cross beam is arranged at the front ends of the pair of threshold beams, the rear floor front cross beam is arranged at the rear ends of the pair of threshold beams, a placing part is formed among the pair of threshold beams, the rear floor front cross beam and the front baffle lower cross beam, and the battery pack is arranged on the placing part; the connecting device is arranged on the threshold beam and comprises a cylinder body, a closed air cavity and a mounting arm; the closed air cavity is arranged in the cylinder body, one end of the mounting arm is connected with the cylinder body, and the other end of the mounting arm is connected with the battery pack; when the battery pack is impacted, the cylinder body moves towards the direction of the battery pack, and relative motion of compressing the closed air cavity is generated between the cylinder body and the mounting arm. Above-mentioned technical scheme has set up connecting device on the threshold roof beam, cushions the impulsive force that whole car received through connecting device to prevent power transmission to the battery package, avoid the battery package to receive the damage.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an electric automobile battery pack mounting structure.
Background
The battery pack is a core part of the whole vehicle structure of the electric vehicle and provides a power source for the electric vehicle, the structural arrangement and the installation of the battery pack are key factors of the comprehensive performance of the whole vehicle of the electric vehicle, the battery pack is generally arranged below the front floor of a vehicle body, and the weight of the battery pack accounts for a large proportion of the electric vehicle. Traditional electric automobile, battery package and automobile body wholeness joint strength are not enough, and when electric automobile collided, the battery package easily received the damage, and the electric automobile security reduces.
As shown in fig. 1, in the car sill beam structure, under the condition of a whole car collision, the main body of the battery pack 4 is impacted by a rigid structure of the car body, so that the risk that the battery pack 4 is extruded by the rigid structure such as the car body beam structure exists, the shell of the battery pack 4 is inevitably deformed by stress or the rigid structure invades into the main body of the battery pack 4, and the battery pack 4 is extruded and deformed by the sill beam 1 and the mounting arm 52, so that the serious safety risk that the inside of the battery pack 4 is short-circuited or electrolyte leaks is caused. In addition, the electric vehicle jolts in the running process, the battery of the existing electric vehicle is directly fixedly connected with the frame longitudinal beam, a good buffering protection mechanism is not provided, and the battery can be damaged in the jolting process.
The existing technical scheme for protecting the battery pack mainly strengthens the strength and rigidity of an automobile doorsill beam structure, so that the impact force on the battery pack is buffered. Chinese patent publication No. CN104908566B discloses an electric vehicle battery pack mounting structure, which includes a battery pack, a fixed frame, and a body-in-white connected to the fixed frame; the fixed frame comprises two front longitudinal beams, two rear longitudinal beams, a front baffle lower cross beam, a rear floor front cross beam, a rear floor rear cross beam, a middle channel beam with two ends respectively connected with the front baffle lower cross beam and the rear floor front cross beam, and two front seat cross beams positioned between the front baffle lower cross beam and the rear floor front cross beam; the battery package includes the bottom plate, and the bottom plate upper end is equipped with the lug, the lower extreme is equipped with coupling assembling, and coupling assembling is connected with preceding baffle bottom end rail lower extreme, front longitudinal lower extreme and back floor rear frame member lower extreme respectively, the lug be convenient for the installation of battery package.
However, when increasing car threshold roof beam structural strength and rigidity, the weight of whole car also promotes to some extent, and each coupling assembling of battery package all connects on corresponding car roof beam in addition, and when the vehicle collided, the deformation of car roof beam can directly produce the extrusion to the fixed point of battery package, did not have the relevant structure of buffering collision effort, caused the fixed point of battery package directly to become invalid, and then damaged the battery package, and whole security performance is not good.
Disclosure of Invention
Therefore, it is desirable to provide an electric vehicle battery pack installation structure for solving the technical problems that the battery pack is easily damaged when the existing vehicle is collided and the battery is easily damaged in the bumping process of the vehicle.
In order to achieve the above object, the inventor provides an electric vehicle battery pack mounting structure, which comprises a pair of threshold beams, a front baffle lower cross beam, a rear floor front cross beam and a connecting device;
the front baffle lower cross beam is arranged at the front ends of the pair of threshold beams, the rear floor front cross beam is arranged at the rear ends of the pair of threshold beams, a placing part is formed among the pair of threshold beams, the rear floor front cross beam and the front baffle lower cross beam, and the battery pack is arranged on the placing part;
the connecting device is arranged on the threshold beam and comprises a cylinder body, a closed air cavity and a mounting arm;
the closed air cavity is arranged in the cylinder body, one end of the mounting arm is connected with the cylinder body, and the other end of the mounting arm is connected with the battery pack;
when the battery pack is impacted, the cylinder body moves towards the direction of the battery pack, and relative motion for compressing the closed air cavity is generated between the cylinder body and the mounting arm.
Furthermore, more than two connecting devices are arranged on the threshold beam.
Further, the connecting device further comprises a shell, the cylinder body is arranged in the shell, and a rubber layer is arranged between the cylinder body and the shell.
Furthermore, a first cracking guide groove is formed in the shell, and the first cracking guide groove is a groove which is sunken towards the direction of the cylinder body.
Furthermore, a second cracking guide groove is formed in the closed air cavity and is a groove protruding towards the shell.
Further, the connecting device also comprises an inflation valve, and the inflation valve is arranged on the side surface of the closed air cavity.
Further, the connecting device further comprises a pressure release valve, and the pressure release valve is arranged at one end, far away from the mounting arm, of the closed air cavity.
Furthermore, limiting blocks are arranged at two ends of the mounting arm and used for limiting the extending position of the mounting arm.
Furthermore, tracks are arranged on two sides of the mounting arm, the limiting blocks are arranged on two sides of the tracks, and the tracks move relative to the limiting blocks.
Further, the connecting device is fixed to the sill beam by bolts.
Compared with the prior art, the technical scheme has the advantages that the connecting device is arranged on the threshold beam, impact force on the whole vehicle is buffered through the connecting device, and the risk that the battery pack main body is impacted by a rigid structure of the vehicle body under the condition of collision of the whole vehicle can be effectively reduced; meanwhile, the vibration of vibration excitation sources of the whole vehicle, such as a power assembly, a road surface and the like, can be effectively filtered, and the vibration input to the battery pack main body is reduced. The connecting device comprises a cylinder body, a closed air cavity and a mounting arm, the battery pack is impacted, the cylinder body moves towards the battery pack, and the closed air cavity is compressed relative to the mounting arm. Therefore, the impact force on the whole vehicle is buffered by the relative compression of the closed air cavity, and the safety of the battery pack is ensured.
Drawings
FIG. 1 is a schematic structural view of a prior art rocker beam structure for an automobile;
fig. 2 is a schematic structural diagram of a battery pack mounting structure of an electric vehicle according to an embodiment;
FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view of C in FIG. 3;
FIG. 5 isbase:Sub>A schematic view of the structure A-A in FIG. 2;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;
fig. 7 is a graph showing a change in the impact force F applied to the battery pack mounting structure of the electric vehicle according to the embodiment.
Description of reference numerals:
1. a threshold beam;
2. a front baffle lower beam;
3. a rear floor front cross member;
4. a battery pack;
5. a connecting device;
50. a cylinder body;
51. sealing the air cavity;
52. mounting an arm;
520. a track;
521. a seal ring;
53. a limiting block;
54. a housing;
55. a rubber layer;
56. a first crack guide groove;
57. a second crack guide groove;
58. an inflation valve;
59. a pressure relief valve;
6. and (4) bolts.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected", "fixed", and the like are to be construed broadly and may, for example, be fixed or removable or integral or electrical; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the description of the embodiments of the present application are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
Referring to fig. 2 and 3, the battery pack 4 mounting structure of the electric vehicle of the present embodiment includes a pair of threshold beams 1, a front baffle lower beam 2, a rear floor front beam 3, and a connecting device 5; the front baffle lower cross beam 2 is arranged at the front ends of the pair of threshold beams 1, the rear floor front cross beam 3 is arranged at the rear ends of the pair of threshold beams 1, a placing part is formed among the pair of threshold beams 1, the rear floor front cross beam 3 and the front baffle lower cross beam 2, and the battery pack 4 is arranged in the placing part; the connecting device 5 is arranged on the threshold beam 1, and the connecting device 5 comprises a cylinder body 50, a closed air cavity 51 and a mounting arm 52; the closed air cavity 51 is arranged in the cylinder body 50, one end of the mounting arm 52 is connected with the cylinder body 50, and the other end of the mounting arm 52 is connected with the battery pack 4; when the battery pack 4 is impacted, the cylinder 50 moves toward the battery pack 4, and a relative movement is generated between the cylinder 50 and the mounting arm 52 to compress the closed air cavity 51. The battery pack 4 is conventionally placed in the sill beam 1 structure, the insides of a pair of sill beams 1, a front baffle lower beam 2 and a rear floor front beam 3 are all provided with nuts, the corresponding positions of the nuts on the bottom plates of the pair of sill beams 1, the front baffle lower beam 2 and the rear floor front beam 3 are all provided with corresponding screw holes, and the connecting device 5 is connected on the sill beam 1 through a bolt 6. On the basis of not changing the structure of the sill beam 1, a connecting device 5 is arranged on the sill beam 1. One or more than two connecting devices 5 can be arranged, as shown in fig. 2, four groups of connecting devices 5 are arranged on each threshold beam 1, and eight groups of connecting devices 5 are arranged on a pair of threshold beams 1.
When the electric automobile is subjected to the collision force F, the force is transmitted to the connecting device 5 through the doorsill beam 1, and the connecting device 5 disperses the received collision force, so that the battery pack 4 is not influenced when the whole automobile is collided. Specifically, the connecting device 5 includes a cylinder 50, a closed air chamber 51 and a mounting arm 52, the closed air chamber 51 is disposed inside the cylinder 50, the mounting arm 52 is mainly used for connecting the battery pack 4 and the connecting device 5, therefore, one end of the mounting arm 52 is disposed inside the cylinder 50 of the connecting device 5 and can also be disposed inside the closed air chamber 51, and the other end can be fixed on the battery pack 4 through the bolt 6. One end of the mounting arm 52 is connected to the cylinder 50, and the mounting arm 52 and the cylinder 50 are sealed by a seal 521. As shown in fig. 7, when the vehicle is involved in a side collision, the rocker beam 1 is pressed, force is transmitted to the connecting device 5, and relative movement between the cylinder 50 and the mounting arm 52 is generated to compress the closed air chamber 51, so that the connecting device 5 can absorb the deformation of the vehicle body caused by the side collision and protect the main body of the battery pack 4.
According to the technical scheme, the connecting device 5 is arranged on the threshold beam 1, the impact force on the whole vehicle is buffered through the connecting device 5, and the risk that the main body of the battery pack 4 is impacted by a rigid structure of the vehicle body under the condition of collision of the whole vehicle can be effectively reduced; meanwhile, the vibration of the whole vehicle vibration excitation source from a power assembly, a road surface and the like can be effectively filtered, and the vibration input to the battery pack 4 main body is reduced. The connecting device 5 comprises a cylinder 50, a closed air cavity 51 and a mounting arm 52, the battery pack 4 is impacted, the cylinder 50 moves towards the battery pack 4, and the closed air cavity 51 is compressed relative to the mounting arm 52. Thus, the impact force on the whole vehicle is buffered by the relative compression of the closed air cavity 51, and the safety of the battery pack 4 is ensured.
Preferably, as shown in fig. 3, a housing 54 is provided outside the cylinder 50 for protection, and a vulcanized rubber layer 55 is provided between the cylinder 50 and the housing 54 for shock absorption and energy absorption. The connecting device 5 further comprises a housing 54, the cylinder 50 is disposed in the housing 54, and a rubber layer 55 is disposed between the cylinder 50 and the housing 54. The shell 54 and the cylinder body 50 form the vulcanized rubber layer 55 between the inner surface of the shell 54 and the outer surface of the cylinder body 50 through a vulcanization molding process, and when a vehicle runs, the vulcanized rubber layer 55 can absorb part of vibration from the road surface and the whole vehicle, so that the vibration input to the main body of the battery pack 4 is reduced, the vibration of the battery pack 4 is reduced, the durability of the whole vehicle of the battery pack 4 is improved, and the damage and maintenance cost is reduced.
Preferably, referring to fig. 5 and 6, in order to prevent the entire vehicle from being subjected to a collision force, the mounting arm 52 is continuously extended in the direction of the battery pack 4 and may be finally separated from the cylinder 50. Therefore, stoppers 53 are provided at positions of the inner walls of both sides of the cylinder 50 corresponding to the mounting arms 52. Meanwhile, in order to cooperate with the movement of the stopper 53, rails 520 or slide rails are disposed on both sides of the mounting arm 52, the stopper 53 is disposed on both sides of the rails 520 or slide rails, and the rails 520 move relative to the stopper 53. The limiting block 53 passes through a matching hole on the cylinder body 50 and is matched with the rail 520 or the sliding rail of the mounting arm 52, so that the position control of the mounting arm 52 is realized. The two ends of the mounting arm 52 are provided with limit blocks 53, and the limit blocks 53 are used for limiting the extending position of the mounting arm 52. The mounting arm 52 is provided with tracks 520 on both sides, the limiting blocks 53 are arranged on both sides of the tracks 520, and the tracks 520 move relative to the limiting blocks 53. In addition, existing restraint structures may be provided, similar to drawers, for restraining the mounting arms 52 in extreme extended positions. For example, a rail receiving structure for detachably mounting the rail assembly is provided on the bottom surface of the bottom wall of the mounting arm 52. The slide rail insertion structure comprises a side guide limiting block 53, a positioning connecting part and an insertion stopping block, wherein the side guide limiting block 53 is arranged on the side part of the slide rail assembly, the positioning connecting part is connected with the slide rail assembly in a positioning mode, and the insertion stopping block is arranged at the terminal of the slide rail insertion stroke.
Preferably, referring to fig. 5 and 6, in order to ensure that the closed air chamber 51 of the connecting device 5 can be adapted to different vehicle types and at the same time, the connecting device 5 can be used continuously after being collided, an inflation valve 58 is arranged on the side surface of the cylinder 50. The connecting device 5 further comprises an inflation valve 58, and the inflation valve 58 is arranged on the side surface of the closed air cavity 51. The connecting device 5 is inflated through the corresponding inflator pump, and the target air pressure is calculated in a matching mode according to the weight of the battery pack 4 and the transmission condition of the collision force of the whole vehicle. In addition, when the gas in the closed air chamber 51 is reduced, the closed air chamber 51 can be inflated by the inflator pump, thereby ensuring that the connecting device 5 can be continuously used.
Preferably, a relief valve 59 is provided in addition to the inflation valve 58 for controlling the air pressure in the closed air chamber 51. The connecting device 5 further comprises a pressure relief valve 59, and the closed air cavity 51 is provided with the pressure relief valve 59 at the end far away from the mounting arm 52. The relief valve 59 is connected on the through-hole of the side of the cylinder body 50, and when the air pressure in the cylinder body 50 rises to a certain pressure value, the relief valve 59 works to reduce the air pressure in the cavity air chamber and control the air pressure.
As shown in fig. 4, when the vehicle is in a severe collision, the relative movement displacement between the cylinder 50 and the mounting arm 52 is increased, the closed air cavity 51 is completely compressed, the mounting arm 52 further impacts the bottom of the cylinder 50, the cylinder 50 will crack and fall off along the first cracking guide groove 56 under the impact force, and the transmission path of the impact force F is interrupted, and the preferential damage mechanism of the connecting device 5 protects the main body of the battery pack 4, and reduces the risk that the main body of the battery pack 4 is deformed and damaged by the impact force. The housing 54 is provided with a first crack guide groove 56, and the first crack guide groove 56 is a groove recessed toward the cylinder 50.
Meanwhile, in order to allow the connecting device 5 to interrupt the transmission of the collision force F more quickly, a second burst guide groove 57 is provided on the closed air chamber 51. Preferably, a second split guide groove 57 is provided on the closed air cavity 51, and the second split guide groove 57 is a groove protruding toward the housing 54. The threshold beam 1Y is deformed when the whole vehicle is laterally collided, when the deformation of the threshold exceeds the internal stroke of the cylinder body 50, the shell 54 and the bottom of the cylinder body 50 fall off under the reaction force of the mounting arm 52, the transmission path of the collision force F is interrupted, the main body of the battery pack 4 is further protected by the preferential damage mechanism, and the risk that the main body of the battery pack 4 is deformed and damaged by the impact force is reduced. The risks of high-voltage short circuit electricity leakage, electrolyte leakage and the like of the battery pack 4 are reduced, and the collision safety of the whole vehicle is improved.
When the whole vehicle collides laterally, the threshold beam 1 deforms in the Y direction, the collision force is transmitted to the connecting device 5, the shell 54 and the rubber layer 55 absorb a part of the collision force, the other part of the collision force acts on the cylinder body 50, relative motion compressing the closed air cavity 51 is generated between the cylinder body 50 and the mounting arm 52, the closed air cavity 51 is compressed to absorb threshold displacement deformation, and the force is not directly transmitted to act on the battery pack 4. In addition, in order to prevent the entire vehicle from receiving a collision force, the mounting arm 52 is continuously extended in the direction of the battery pack 4 and may be finally detached from the cylinder 50. Stoppers 53 are provided on the inner walls of both sides of the cylinder body 50 for restricting the extended position of the mounting arm 52. Meanwhile, in order to ensure that different vehicle types can be suitable for the connecting device 5, the side face of the cylinder body 50 is provided with the inflation valve 58, the connecting device 5 is inflated through the corresponding inflation pump, and the target air pressure is calculated in a matching mode according to the weight of the battery pack 4 and the transmission condition of the collision force of the whole vehicle. In addition, the side surface of the cylinder body 50 can be provided with a pressure relief valve 59 in a matching way, when the air pressure in the cylinder body 50 rises to a certain pressure value, the pressure relief valve 59 works to reduce the air pressure of the cavity air chamber and control the air pressure. Finally, in order to prevent the vehicle from being collided with more violently, the relative movement displacement between the cylinder 50 and the mounting arm 52 is increased, and the closed air chamber 51 is completely compressed. The first cracking guide groove 56 and the second cracking guide groove 57 are arranged, the shell 54 and the bottom of the cylinder body 50 fall off under the reaction force of the mounting arm 52, the transmission path of the collision force F is interrupted, the preferential damage mechanism further protects the main body of the battery pack 4, and the risk that the main body of the battery pack 4 is deformed and damaged by the impact force is reduced. The risks of high-voltage short circuit electricity leakage, electrolyte leakage and the like of the battery pack 4 are reduced, and the collision safety of the whole vehicle is improved.
Compared with the prior art, the technical scheme has the advantages that the connecting device 5 is arranged on the threshold beam 1, impact force on the whole vehicle is buffered through the connecting device 5, and the risk that the main body of the battery pack 4 is impacted by a rigid structure of the vehicle body under the condition of collision of the whole vehicle can be effectively reduced; meanwhile, the vibration of the whole vehicle vibration excitation source from a power assembly, a road surface and the like can be effectively filtered, and the vibration input to the battery pack 4 main body is reduced. The connecting device 5 comprises a cylinder 50, a closed air cavity 51 and a mounting arm 52, the battery pack 4 is impacted, the cylinder 50 moves towards the battery pack 4, and the closed air cavity 51 is compressed relative to the mounting arm 52. Thus, the impact force on the whole vehicle is buffered by the relative compression of the closed air cavity 51, and the safety of the battery pack 4 is ensured.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (7)
1. The utility model provides an electric automobile battery package mounting structure which characterized in that: comprises a pair of threshold beams, a front baffle lower beam, a rear floor front beam and a connecting device;
the front baffle lower cross beam is arranged at the front ends of the pair of threshold beams, the rear floor front cross beam is arranged at the rear ends of the pair of threshold beams, a placing part is formed among the pair of threshold beams, the rear floor front cross beam and the front baffle lower cross beam, and the battery pack is arranged on the placing part;
the connecting device is arranged on the threshold beam and comprises a cylinder body, a closed air cavity and a mounting arm;
the closed air cavity is arranged in the cylinder body, one end of the mounting arm is connected with the cylinder body, and the other end of the mounting arm is connected with the battery pack;
when the battery pack is impacted, the cylinder body moves towards the direction of the battery pack, and relative motion for compressing the closed air cavity is generated between the cylinder body and the mounting arm;
more than two connecting devices are arranged on the threshold beam;
the connecting device also comprises a shell, the cylinder body is arranged in the shell, and a rubber layer is arranged between the cylinder body and the shell;
the shell is provided with a first cracking guide groove, and the first cracking guide groove is a groove which is sunken towards the direction of the cylinder body.
2. The electric vehicle battery pack mounting structure according to claim 1, characterized in that: and a second cracking guide groove is arranged on the closed air cavity and is a groove protruding towards the direction of the shell.
3. The electric vehicle battery pack mounting structure according to claim 1, characterized in that: the connecting device further comprises an inflation valve, and the inflation valve is arranged on the side face of the closed air cavity.
4. The electric vehicle battery pack mounting structure according to claim 3, characterized in that: the connecting device further comprises a pressure release valve, and the pressure release valve is arranged at one end, far away from the mounting arm, of the closed air cavity.
5. The electric vehicle battery pack mounting structure according to claim 1, characterized in that: the mounting arm is provided with stoppers at two ends, and the stoppers are used for limiting the extending position of the mounting arm.
6. The electric vehicle battery pack mounting structure according to claim 5, characterized in that: the mounting arm is provided with tracks on two sides, the limiting blocks are arranged on two sides of the tracks, and the tracks move relative to the limiting blocks.
7. The electric vehicle battery pack mounting structure according to claim 1, characterized in that: the connecting device is fixed on the threshold beam through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110732849.8A CN113479054B (en) | 2021-06-30 | 2021-06-30 | Battery pack mounting structure of electric automobile |
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| CN202110732849.8A CN113479054B (en) | 2021-06-30 | 2021-06-30 | Battery pack mounting structure of electric automobile |
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| JP2017185948A (en) * | 2016-04-07 | 2017-10-12 | トヨタ自動車株式会社 | Battery mounting structure for vehicle |
| EP3428993A1 (en) * | 2017-07-13 | 2019-01-16 | Outokumpu Oyj | Safety battery compartment for battery electric vehicles |
| CN111063846A (en) * | 2019-12-30 | 2020-04-24 | 郑州工程技术学院 | Multi-stage buffer device for battery pack of electric vehicle |
| CN111546868A (en) * | 2020-04-23 | 2020-08-18 | 浙江零跑科技有限公司 | Vehicle structure for improving side collision safety performance of new energy electric vehicle |
| CN212967885U (en) * | 2020-07-31 | 2021-04-13 | 摩登汽车有限公司 | Power battery box body of new energy automobile |
| CN112382820A (en) * | 2020-11-12 | 2021-02-19 | 上海理工大学 | Active control battery protection device and control method thereof |
| CN216002158U (en) * | 2021-06-30 | 2022-03-11 | 云度新能源汽车有限公司 | Battery pack mounting structure of electric automobile |
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| CN113479054A (en) | 2021-10-08 |
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