CN113386545A - Vibration and noise reduction device of battery pack cover plate of pure electric structure automobile - Google Patents
Vibration and noise reduction device of battery pack cover plate of pure electric structure automobile Download PDFInfo
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- CN113386545A CN113386545A CN202110837385.7A CN202110837385A CN113386545A CN 113386545 A CN113386545 A CN 113386545A CN 202110837385 A CN202110837385 A CN 202110837385A CN 113386545 A CN113386545 A CN 113386545A
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- 230000009467 reduction Effects 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 65
- 229920000742 Cotton Polymers 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 19
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 14
- 230000002159 abnormal effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 230000005284 excitation Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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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
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
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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
- 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
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Abstract
本发明公开了一种纯电动架构汽车电池包盖板的减振降噪装置，涉及汽车制造技术领域，包括环形填充组件和点阵填充组件，所述环形填充组件为用于沿电池盖板顶部四周布置的封边填充块，且所述封边填充块为环形结构；所述点阵填充组件包括用于布置在电池盖板顶部的多个方形填充块，且多个方形填充块间呈均匀分布状态；其中，所述方形填充块均位于所述封边填充块的环形结构内部，所述封边填充块和方形填充块的材质均为硬质棉毡，且所述封边填充块和方形填充块均用于位于电池盖板和车身地板之间的间隙内。本发明能够在电池盖板和车身地板之间形成良好的声阻隔效应，有效保证乘车体验。
The invention discloses a vibration and noise reduction device for a battery pack cover plate of an automobile with a pure electric structure, which relates to the technical field of automobile manufacturing, and includes an annular filling assembly and a lattice filling assembly. The edge-sealing filling blocks are arranged around, and the edge-sealing filling blocks are annular structures; the lattice filling assembly includes a plurality of square filling blocks arranged on the top of the battery cover plate, and the plurality of square filling blocks are evenly distributed Distribution state; wherein, the square filling blocks are located inside the annular structure of the edge sealing filling block, the material of the edge sealing filling block and the square filling block are hard cotton felt, and the edge sealing filling block and Square filler blocks are used in the gap between the battery cover and the body floor. The invention can form a good sound barrier effect between the battery cover plate and the vehicle body floor, and effectively ensure the riding experience.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to a vibration and noise reduction device for a battery pack cover plate of a pure electric structure automobile.
Background
The performance of the NVH (Noise Vibration Harshness, Noise, Vibration and sound Vibration roughness) of the automobile is an important index influencing the comfort in the automobile, and along with the increasing popularization of the electric automobile, the NVH problem of the automobile based on the pure electric framework is increasingly prominent. The new three-electric system replaces the traditional power system, so that the NVH characteristics of the pure electric vehicle are different from those of the traditional vehicle, and new challenges are brought to the NVH technology of the vehicle.
At present, a power battery based on a pure electric framework automobile in the market is basically arranged under a vehicle body floor, as shown in fig. 1, wherein a battery cover plate is arranged at the top of the power battery, the vehicle body floor is arranged at the bottom of the vehicle body, and the battery cover plate and the vehicle body floor are arranged at intervals. The adoption of the battery arrangement scheme brings a new NVH problem: on one hand, the battery cover plate can be dynamically deformed due to road excitation in the driving process of the automobile, and the battery cover plate is easy to collide with the floor of the automobile body when the deformation is large, so that knocking abnormal sound is generated, and the internal body test of a client is directly influenced; on the other hand, a gap exists between the battery cover plate and the floor of the vehicle body, so that high-frequency air sound excited by a motor or a tire outside the vehicle is easily transmitted into the vehicle from the floor through the gap, and the comfort inside the vehicle is affected. For the above NVH problem caused by the power battery, it is necessary to reasonably design the vibration isolation mechanism to reduce the dynamic deformation of the battery cover plate so as to avoid collision with the floor, and it is also necessary to reasonably design the sound insulation device to reduce or insulate the sound transmission path between the battery cover plate and the vehicle body floor, and in addition, the heat dissipation of the battery itself needs to be considered when designing the sound insulation or vibration isolation mechanism.
Currently, it is common practice for most electric vehicles to provide a rubber buffer block between a battery cover plate and a vehicle body floor, so as to avoid direct collision between the battery cover plate and the vehicle body floor, and to arrange the rubber buffer block at a place where the local rigidity of the battery cover plate is weak. Adopt the mode of rubber buffer block, can avoid the direct impact collision between battery apron and the automobile body floor under most real vehicle operating mode, the emergence of abnormal sound has been avoided, and can not influence power battery's thermal diffusivity basically, however, because the hardness of rubber buffer block is great, in some extreme operating mode, if under big excitation impact, the rubber buffer block still can take place to strike the abnormal sound with the floor, and simultaneously, can't guarantee the leakproofness between rubber buffer block and battery apron or the automobile body floor, still can't realize the sound insulation effect between battery apron and the automobile body floor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a vibration and noise reduction device for a battery pack cover plate of a pure electric structure automobile, which can form a good sound barrier effect between the battery cover plate and a vehicle body floor and effectively ensure riding experience.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the battery cover plate comprises an annular filling assembly, a sealing ring and a sealing ring, wherein the annular filling assembly is a sealing ring filling block arranged along the periphery of the top of the battery cover plate and is of an annular structure;
the lattice filling assembly comprises a plurality of square filling blocks which are arranged at the top of the battery cover plate, and the square filling blocks are uniformly distributed;
the square filling blocks are located inside the annular structures of the edge sealing filling blocks, the edge sealing filling blocks and the square filling blocks are made of hard cotton felt, and the edge sealing filling blocks and the square filling blocks are used for being located in gaps between the battery cover plate and the vehicle body floor.
On the basis of the technical scheme, the length of the edge sealing filling block is the same as that of the top of the battery cover plate, and the width of the edge sealing filling block is the same as that of the top of the battery cover plate.
On the basis of the technical scheme, the outer edge of the edge sealing filling block annular structure extends inwards at the top of the battery cover plate along the horizontal direction to form the inner edge of the annular structure.
On the basis of the technical scheme, the width between the outer edge and the inner edge of the edge sealing filling block annular structure is 60 mm.
On the basis of the technical scheme, the dot matrix filling assembly comprises 9 square filling blocks, and the 9 square filling blocks are uniformly distributed in the annular structure of the edge sealing filling block in an array mode.
On the basis of the technical scheme, the edge sealing filling blocks are 9 square filling blocks in the annular structure, wherein each column comprises 3 square filling blocks, and each row comprises 3 square filling blocks.
On the basis of the technical scheme, the transverse distances between the adjacent square filling blocks are the same, and the longitudinal distances between the adjacent square filling blocks are the same.
On the basis of the technical scheme, the length and the width of the square filling block are both 200 mm.
On the basis of the technical scheme, the thickness of the edge sealing filling block is 2 times of the gap between the battery cover plate and the vehicle body floor, and the thickness of the square filling block is 2 times of the gap between the battery cover plate and the vehicle body floor.
On the basis of the technical scheme, the thickness of the edge sealing filling block is 3 times of the gap between the battery cover plate and the vehicle body floor, and the thickness of the square filling block is 3 times of the gap between the battery cover plate and the vehicle body floor.
Compared with the prior art, the invention has the advantages that: the hard cotton felt meeting the hardness requirement is arranged in the gap between the battery cover plate and the vehicle body floor, the edge sealing filling blocks are in an annular arrangement state at the top of the battery cover plate, the square filling blocks are in an evenly-arranged state at the top of the battery cover plate, the hard cotton felt resists dynamic deformation of the battery cover plate, direct collision between the battery cover plate and the vehicle body floor is avoided, the evenly-distributed square filling blocks can ensure that the hard cotton felt cannot form impact abnormal sound with the vehicle body floor under large excitation impact, the edge sealing filling blocks in the annular arrangement state form a sealing effect, and the square filling blocks are matched, so that a good sound blocking effect can be formed between the battery cover plate and the vehicle body floor, sound is prevented from being transmitted into a passenger compartment through the gap between the battery cover plate and the vehicle body floor, and riding experience is effectively guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of the relationship between a power battery and a vehicle body.
FIG. 2 is a schematic structural diagram of a vibration and noise reduction device of a battery pack cover plate of a pure electric architecture vehicle according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the effect of improving the sound insulation of the whole vehicle after the vibration and noise reduction device is arranged.
In the figure: 1-edge sealing filling blocks, 2-square filling blocks and 3-battery cover plates.
Detailed Description
The embodiment of the invention provides a vibration and noise reduction device of a battery pack cover plate of a pure electric structure automobile, hard cotton felts meeting the hardness requirement are arranged in a gap between a battery cover plate 3 and a vehicle body floor, edge sealing filling blocks 1 are annularly arranged at the top of the battery cover plate 3, square filling blocks 2 are uniformly arranged at the top of the battery cover plate 3, the hard cotton felts resist the dynamic deformation of the battery cover plate 3 to avoid the direct collision between the battery cover plate 3 and the vehicle body floor, the uniformly distributed square filling blocks 2 can ensure that the hard cotton felts cannot form impact abnormal sound with the vehicle body floor under large excitation impact, the edge sealing filling blocks 1 in the annularly arranged state form a sealing effect, and a good sound isolation effect can be formed between the battery cover plate 3 and the vehicle body floor by matching with the square filling blocks 2 to avoid sound from being transmitted into a passenger compartment through the gap between the battery cover plate 3 and the vehicle body floor, effectively guarantee the experience of taking a bus.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments.
Referring to fig. 2, the vibration damping and noise reducing device for the battery pack cover plate of the pure electric vehicle in the embodiment of the invention includes an annular filling assembly and a lattice filling assembly.
The annular filling assembly is used for sealing edge filling blocks 1 arranged around the top of the battery cover plate 3, and the sealing edge filling blocks 1 are of an annular structure. The lattice filling assembly comprises a plurality of square filling blocks 2 which are arranged on the top of the battery cover plate 3, and the square filling blocks 2 are uniformly distributed. Square filling block 2 all is located inside the loop configuration of banding filling block 1, the material of banding filling block 1 and square filling block 2 is the cotton felt of stereoplasm, and banding filling block 1 and square filling block 2 all are used for being located the clearance between battery apron 3 and the automobile body floor.
In the embodiment of the invention, the edge sealing filling blocks 1 and the square filling blocks 2 are made of hard cotton felts, the hardness of the hard cotton felts is higher than that of foamed or sound-absorbing cotton, so that the floor of the vehicle body and the battery cover plate 3 can not collide under the impact excitation of various real vehicle states, and meanwhile, the hardness of the hard cotton felts is lower than that of the rubber blocks, so that the hard cotton felts can not collide with the floor of the vehicle body under the impact of extreme working conditions.
In the embodiment of the invention, the length of the edge sealing filling block 1 is the same as that of the top of the battery cover plate 3, and the width of the edge sealing filling block 1 is the same as that of the top of the battery cover plate 3. The outer edge of the annular structure of the edge sealing filling block 1 extends inwards at the top of the battery cover plate 3 along the horizontal direction to form the inner edge of the annular structure. The width between the outer edge and the inner edge of the annular structure of the edge sealing filling block 1 is 60 mm. Banding stuff block 1 distributes around 3 tops of battery apron, approximate simulation banding effect, separation sound, and banding stuff block 1 inwards extends 60mm along 3 peripheries of battery apron simultaneously to guarantee that banding stuff block 1 has sufficient sound resistance to separate the effect.
In the embodiment of the invention, the length and the width of the square filling block 2 are both 200 mm. The dot matrix filling assembly comprises 9 square filling blocks 2, and the 9 square filling blocks 2 are uniformly distributed inside the annular structure of the edge sealing filling block 1 in an array form. The inside 9 square stuff blocks 2 of the ring structure of the edge banding stuff block 1, wherein, each column comprises 3 square stuff blocks 2, and each row comprises 3 square stuff blocks 2. The square filling blocks 2 in the annular structure of the edge sealing filling block 1 have the same transverse distance between the adjacent square filling blocks 2, and the same longitudinal distance between the adjacent square filling blocks 2. The mode that adopts 9 square filling blocks 2 to be punctiform equipartition can reduce the coverage area of hard cotton felt, improves the radiating effect of battery. In the actual application process, the specific size, number and distribution position of the square filling blocks 2 can be adjusted according to the performance of the actual vehicle stage, so as to achieve the optimal performance in all aspects.
In the embodiment of the invention, the thickness of the edge sealing filling block 1 is 2 times of the gap between the battery cover plate 3 and the vehicle body floor, and the thickness of the square filling block 2 is 2 times of the gap between the battery cover plate 3 and the vehicle body floor, or the thickness of the edge sealing filling block 1 is 3 times of the gap between the battery cover plate 3 and the vehicle body floor, and the thickness of the square filling block 2 is 3 times of the gap between the battery cover plate 3 and the vehicle body floor. The hard cotton felt has good compressibility, when a power battery is assembled, the thickness of the edge sealing filling block 1 and the thickness of the square filling block 2 are set to be 2-3 times of the gap between the battery cover plate 3 and a vehicle body floor, the edge sealing filling block 1 and the square filling block 2 are firstly installed on the battery cover plate 3, then the power battery is installed on a vehicle body, the thickness of the edge sealing filling block 1 and the thickness of the square filling block 2 are gradually compressed to the thickness of the gap in the process of loading the power battery, and in the compression process of the edge sealing filling block 1 and the square filling block 2, the hard cotton felt can be guaranteed to be in an ideal contact state with the vehicle body floor, so that the edge sealing effect of the edge sealing filling block 1 is ideal, and sound leakage is avoided; meanwhile, the hardness of the hard cotton felt is increased after compression, so that the thickness of the square filling block 2 can be preset according to the real vehicle stage teaching effect, and the square filling block 2 is guaranteed to have proper hardness to block the impact abnormal sound between the battery cover plate 3 and the vehicle body floor after compression.
The vibration reduction and noise reduction device provided by the embodiment of the invention can solve the problems that: (1) a hard cotton felt is filled in a gap between the battery cover plate 3 and the vehicle body floor, and the hard cotton felt can resist the dynamic deformation of the battery cover plate 3, avoid the direct collision between the battery cover plate 3 and the vehicle body floor and ensure that the hard cotton felt can not form impact abnormal sound with the vehicle body floor under large excitation impact; (2) the edge sealing filling blocks 1 and the square filling blocks 2 are reasonably arranged, so that collision and abnormal sound cannot occur in all areas of the battery cover plate 3; (3) the edge sealing filling block 1 can form a good sound blocking effect between the vehicle body floor and the battery cover plate 3, so that sound is prevented from being transmitted into a passenger compartment through a gap between the vehicle body floor and the battery cover plate 3; (4) arrange banding stuff pack 1 and square stuff pack 2 between battery apron 3 and automobile body floor, under the prerequisite that satisfies separation collision and sound separation, guarantee that the material coverage area is as little as possible to ensure good thermal diffusivity.
The beneficial effects brought by the vibration-damping and noise-reducing device comprise the following aspects:
(1) because the hard cotton felt has better sound absorption performance, after the edge sealing filling block 1 is added, when sound is transmitted to the edge of the gap between the battery cover plate 3 and the floor of the vehicle body, most sound energy is gradually consumed in the process of penetrating through the hard cotton felt with the thickness of 60mm and is converted into heat energy, the rest part of sound energy enters the gap and then is continuously absorbed by the square filling block 2, and finally, the sound energy which can enter the vehicle through the floor of the vehicle body is very little, so that a good sound insulation effect is achieved through the edge sealing filling block 1 and the square filling block 2.
Referring to fig. 3, a diagram of the effect of improving the sound insulation of the whole vehicle after the vibration damping and noise reducing device of the present invention is added is shown. Fig. 3 specifically shows the sound insulation of the whole vehicle from the front cabin to the right passenger on the rear row, in fig. 3, the lower line segment shows the sound insulation of the whole vehicle before the vibration and noise reduction device of the present invention is not arranged, that is, before the vibration and noise reduction device of the present invention is not arranged, and the whole vehicle, and the upper line segment shows the sound insulation of the whole vehicle after the vibration and noise reduction device of the present invention is arranged, that is, after the vibration and noise reduction device of the present invention is arranged, the Frequency on the abscissa shows the Frequency, the unit is Hz, and the PBNR on the ordinate shows the sound insulation of the whole vehicle, the unit is dB.
As can be seen from FIG. 2, the sound insulation quantity of 800-2000 Hz is improved by about 0.8dB on average, the sound insulation quantity of 5000-10000 Hz is improved by nearly 2dB on average, and the noise of the motor of BEV (Battery electric Vehicle) is mainly high-frequency noise above 500-10000 Hz, so that the vibration-damping noise-reducing device can effectively reduce the noise of the motor in the Vehicle.
(2) Combine later stage real car debugging effect, rationally set up the initial thickness of the cotton felt of stereoplasm and hardness, can guarantee that the cotton felt of stereoplasm keeps suitable hardness after being installed the compression, can avoid taking place the collision abnormal sound between battery apron 3 and vehicle body floor to can guarantee that the cotton felt of stereoplasm can not produce the collision abnormal sound between with vehicle body floor under extreme operating mode's big impact by oneself.
(3) Through the square filling blocks 2 distributed in a dot matrix manner, the coverage area of the battery cover plate 3 is reduced as much as possible, and the influence on the heat dissipation of the power battery is basically avoided.
The hard cotton felt material is adopted to replace rubber, so that abnormal sound can be better avoided, and meanwhile, the sound resistance and insulation effect can be achieved; the arrangement form of the hard cotton felt edge sealing is adopted, so that an ideal sound resistance and insulation effect can be achieved, and the influence on heat dissipation and cost can be reduced; the square filling blocks 2 in a dot distribution form are adopted, so that an ideal abnormal sound avoiding effect can be achieved, and influences on heat dissipation and cost can be reduced; the compression ratio of the hard cotton felt material ensures the flexibility of later debugging.
According to the vibration and noise reduction device of the battery pack cover plate of the pure electric structure automobile, the hard cotton felt meeting the hardness requirement is arranged in the gap between the battery cover plate 3 and the automobile body floor, the edge sealing filling blocks 1 are annularly arranged at the top of the battery cover plate 3, the square filling blocks 2 are uniformly arranged at the top of the battery cover plate 3, the hard cotton felt resists the dynamic deformation of the battery cover plate 3 to avoid the direct collision between the battery cover plate 3 and the automobile body floor, the uniformly distributed square filling blocks 2 can ensure that the hard cotton felt does not form impact abnormal sound with the automobile body floor under large excitation impact, the edge sealing filling blocks 1 in the annular arrangement state form a sealing effect, and the square filling blocks 2 are matched to form a good sound blocking effect between the battery cover plate 3 and the automobile body floor to avoid sound from being transmitted into a passenger compartment through the gap between the battery cover plate 3 and the automobile body floor, effectively guarantee the experience of taking a bus.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
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| CN211335563U (en) * | 2019-11-29 | 2020-08-25 | 比亚迪股份有限公司 | Vehicle and battery pack thereof |
| CN210956799U (en) * | 2019-12-27 | 2020-07-07 | 芜湖天量电池系统有限公司 | Power battery package box structure |
| CN213056674U (en) * | 2020-09-08 | 2021-04-27 | 浙江吉利控股集团有限公司 | Vehicle body assembly for improving noise of whole vehicle and vehicle |
| CN112277613A (en) * | 2020-10-14 | 2021-01-29 | 浙江吉利控股集团有限公司 | A battery pack and body integrated structure and automobile |
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