CN113119705A - Battery pack structure of electric automobile - Google Patents
Battery pack structure of electric automobile Download PDFInfo
- Publication number
- CN113119705A CN113119705A CN201911392761.5A CN201911392761A CN113119705A CN 113119705 A CN113119705 A CN 113119705A CN 201911392761 A CN201911392761 A CN 201911392761A CN 113119705 A CN113119705 A CN 113119705A
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- Prior art keywords
- battery pack
- lower shell
- pack structure
- frame structure
- side member
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- 238000009434 installation Methods 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery pack structure of an electric automobile, which comprises a battery module and a lower shell, wherein a longitudinal beam is arranged in the lower shell along the central axis direction of the lower shell so as to divide the inner space of the lower shell into two symmetrical containing cavities for containing the battery module; the longitudinal beam is provided with a first mounting part which is used for being longitudinally and fixedly connected with the middle part of the automobile body; the left side of casing is equipped with down be used for with car left side longeron fixed connection's second installation department, the right side of casing is equipped with down be used for with car right side longeron fixed connection's third installation department. The battery pack structure of the electric automobile can solve the problems that in the prior art, the central mounting point of the battery pack is transversely arranged, so that the design difficulty is increased, the space in the battery pack cannot be maximally utilized, and the expansibility of a battery pack platform is extremely poor.
Description
Technical Field
The invention relates to the technical field of vehicle manufacturing, in particular to a battery pack structure of an electric vehicle.
Background
The battery pack is a core energy source of the new energy automobile and provides driving electric energy for the whole automobile. When the battery pack is assembled with an electric automobile body, a left side longitudinal row mounting point is usually arranged on the left side of the battery pack, and a right side longitudinal row mounting point is arranged on the right side of the battery pack and is connected with a left longitudinal beam and a right longitudinal beam of the automobile body respectively.
In order to improve the assembly stability of the battery pack and an automobile body, the traditional battery pack is additionally provided with a cross beam in the middle of the battery pack besides mounting points arranged on the periphery of the battery and the automobile body, the mounting points are arranged on the cross beam, and the middle of the mounting point is fixed on the automobile body seat cross beam after the battery pack cross beam and the automobile body seat cross beam are adjusted to be superposed in the X direction during installation. Although the mounting points of the battery pack and the vehicle body are arranged at the periphery and the center of the battery pack, the central mounting point is transversely arranged, so that the inner cross beam of the battery pack and the cross beam of the vehicle seat are completely overlapped in the width direction of the vehicle body during design, and the mounting points cannot be fixed on a beam frame structure of the vehicle body. By doing so, not only the design difficulty is greatly increased, but also the space in the battery pack cannot be utilized to the maximum, and the expansibility of the battery pack platform is extremely poor.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a battery pack structure for an electric vehicle, so as to solve the problems that in the prior art, a central mounting point of a battery pack is transversely arranged, so that the design difficulty is increased, the space in the battery pack cannot be maximally utilized, and the expansibility of a battery pack platform is extremely poor.
In order to achieve the purpose, the battery pack structure of the electric automobile comprises a battery module and a lower shell, wherein a longitudinal beam is arranged in the lower shell along the central axis direction of the lower shell so as to divide the inner space of the lower shell into two bilaterally symmetrical accommodating cavities for accommodating the battery module; the longitudinal beam is provided with a first mounting part which is used for being longitudinally and fixedly connected with the middle part of the automobile body; the left side of casing is equipped with down be used for with car left side longeron fixed connection's second installation department, the right side of casing is equipped with down be used for with car right side longeron fixed connection's third installation department.
Furthermore, the lower shell and the longitudinal beam are both aluminum alloy extruded pieces.
Further, the lower shell comprises a frame structure and a bottom plate, the frame structure is used for supporting the battery modules, and the bottom plate sealing cover is arranged at the bottom of the frame structure; the longitudinal beam is arranged along the central axis direction of the frame structure.
Further, the bottom plate and the frame structure are welded into an integral structure.
Furthermore, the frame structure comprises a front edge beam, a rear edge beam, a left edge beam and a right edge beam, wherein the front edge beam and the rear edge beam are arranged oppositely, and the left edge beam and the right edge beam are arranged oppositely; the longitudinal beam is connected between the front edge beam and the rear edge beam; the second installation department is located on the left side roof beam, the third installation department is located on the right side roof beam.
Furthermore, the front edge beam, the right edge beam, the rear edge beam and the left edge beam are sequentially connected in an end-to-end welding manner to form the frame structure.
Further, the left side beam and the right side beam both comprise a front inclined section and a rear straight section, and the distance between the two front inclined sections is in an increasing trend in the direction from front to back.
Furthermore, a cross beam is arranged between the two front inclined sections, and two ends of the cross beam are respectively connected to the connecting positions of the front inclined sections and the rear straight section; the longitudinal beam is connected between the cross beam and the rear edge beam.
Further, the first installation portion is a plurality of installation sleeves which are evenly arranged along the length direction of the longitudinal beam.
Furthermore, the second mounting parts are a plurality of first mounting holes uniformly arranged along the length direction of the left side beam; the third installation department is for following a plurality of second mounting hole that right roof beam length direction evenly set up.
Compared with the prior art, the battery pack structure of the electric automobile provided by the invention has the following technical effects:
according to the battery pack structure of the electric automobile, the longitudinal beam is arranged in the lower shell along the central axis direction of the lower shell, so that the inner space of the lower shell is divided into two bilaterally symmetrical accommodating cavities for accommodating battery modules; the longitudinal beam is provided with a first mounting part which is used for being longitudinally and fixedly connected with the middle part of the automobile body; a second mounting part fixedly connected with a left longitudinal beam of the automobile is arranged on the left side of the lower shell, and a third mounting part fixedly connected with a right longitudinal beam of the automobile is arranged on the right side of the lower shell; thereby when the battery package is assembling with the electric automobile body, through first installation department and the vertical fixed connection in automobile body middle part, through second installation department and the left longeron fixed connection of car, through third installation department and the right longeron fixed connection of car to when improving the assembly stability of battery package and automobile body, battery package self and the whole car rigidity of car, also be favorable to whole car platformization, the electric automobile motorcycle type mounting point of different electric quantities only need be arranged and need vertically lengthen shorten can, and need not arrange in the inside crossbeam of battery package and realize compatibly with whole car, and then reduced the design degree of difficulty, can maximize utilization battery package inner space, and improved battery package platform expansibility.
Drawings
FIG. 1 is a schematic structural diagram of a battery pack structure of an electric vehicle according to the present invention;
FIG. 2 is a schematic structural diagram of the battery pack structure of the electric vehicle without a bottom plate;
fig. 3 is a schematic structural diagram of a bottom plate of the battery pack structure of the electric vehicle according to the present invention.
The frame structure comprises a lower shell 1, a lower shell 11, an accommodating cavity 12, a frame structure 121, a front side beam 122, a rear side beam 123, a left side beam 1231, a front inclined section 1232, a rear straight section 124, a right side beam 1241, a third mounting part 13, a bottom plate 131, a first plate body 132, a second plate body 2, a longitudinal beam 21, a first mounting part 3 and a cross beam.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to fig. 3, the battery pack structure of the electric vehicle according to the present embodiment includes a battery module and a lower case 1, wherein a longitudinal beam 2 is disposed in the lower case 1 along a central axis direction thereof to divide an inner space of the lower case 1 into two bilaterally symmetrical accommodating cavities 11 for accommodating the battery module; the longitudinal beam 2 is provided with a first mounting part 21 which is used for being longitudinally and fixedly connected with the middle part of the automobile body; a second mounting part (not shown in the figure) for fixedly connecting with a left longitudinal beam of the automobile is arranged on the left side of the lower shell 1, and a third mounting part 1241 for fixedly connecting with a right longitudinal beam of the automobile is arranged on the right side of the lower shell 1;
according to the battery pack structure of the electric automobile, the longitudinal beam 2 is arranged in the lower shell 1 along the central axis direction of the lower shell so as to divide the inner space of the lower shell 1 into two bilaterally symmetrical accommodating cavities 11 for accommodating battery modules; the longitudinal beam 2 is provided with a first mounting part 21 which is used for being longitudinally and fixedly connected with the middle part of the automobile body; a second mounting part (not shown in the figure) for fixedly connecting with a left longitudinal beam of the automobile is arranged on the left side of the lower shell 1, and a third mounting part 1241 for fixedly connecting with a right longitudinal beam of the automobile is arranged on the right side of the lower shell 1; thereby when the battery package is assembling with the electric automobile body, through first installation department 21 and the vertical fixed connection in automobile body middle part, through second installation department and 2 fixed connection of car left side longeron, through third installation department 1241 and the 2 fixed connection of car right side longeron to when improving the assembly stability of battery package and automobile body, battery package self and the whole car rigidity of car, also be favorable to whole car platformization, the electric automobile motorcycle type mounting point of different electric quantities is arranged and only need vertically lengthen shorten can, and need not arrange at battery package inside cross beam 3 and realize compatibly with whole car, and then reduced the design degree of difficulty, can the maximize utilizes battery package inner space, and improved battery package platform expansibility. In the embodiment of the present invention, the second mounting portion and the third mounting portion 1241 are symmetrically disposed along a central axis of the lower case 1.
Further, referring to fig. 1 and fig. 2, as a specific embodiment of the battery pack structure of the electric vehicle provided by the present invention, the lower case 1 and the longitudinal beam 2 are both aluminum alloy extruded pieces; thus, the overall strength of the lower case 1 is ensured, and the overall weight of the battery pack can be reduced. It should be noted that the specific cross-sectional structures of the lower shell 1 and the longitudinal beam 2 can be designed according to the strength requirement.
Further, referring to fig. 1 to 3, as a specific embodiment of the battery pack structure of the electric vehicle provided by the present invention, the lower housing 1 includes a frame structure 12 and a bottom plate 13, the frame structure 12 is used for supporting the battery module, and the bottom plate 13 is sealed and disposed at the bottom of the frame structure 12; the longitudinal beam 2 is arranged along the central axis direction of the frame structure 12; in this way, by adopting the frame structure 12 to support the battery module, since the frame structure 12 itself has higher strength, the overall strength of the lower case 1 can be ensured while bearing the weight of the battery module; meanwhile, the bottom plate 13 can seal and protect the bottom of the frame structure 12 and can bear external impact, so that the lower shell 1 is light in weight and high in strength.
In the embodiment of the present invention, specifically, the bottom plate 13 includes a first plate 131 and a second plate 132, the first plate 131 is disposed at the bottom of the left accommodating cavity 11 in a sealing manner, and the second plate 132 is disposed at the bottom of the right accommodating cavity 11 in a sealing manner.
It should be noted that the weight of the battery module is entirely borne by the frame structure 12, the bottom plate 13 is not used for bearing, only the bottom of the frame structure 12 is sealed and protected, and the frame structure 12 and the bottom plate 13 can be designed independently and flexibly by enabling the frame structure 12 and the bottom plate 13 to perform their own functions, so as to meet the characteristic requirements of the lower case 1.
Further, referring to fig. 1, as a specific embodiment of the battery pack structure of the electric vehicle provided by the present invention, the bottom plate 13 and the frame structure 12 are welded into an integral structure; in this way, the sealing of the bottom plate 13 to the bottom of the frame structure 12 is further improved.
Further, referring to fig. 1 and fig. 2, as a specific embodiment of the battery pack structure of the electric vehicle provided by the present invention, the frame structure 12 includes a front side beam 121, a rear side beam 122, a left side beam 123 and a right side beam 124, the front side beam 121 is disposed opposite to the rear side beam 122, and the left side beam 123 is disposed opposite to the right side beam 2; the longitudinal beam 2 is connected between the front side beam 121 and the rear side beam 122; the second mounting portion is disposed on the left side beam 123, and the third mounting portion 1241 is disposed on the right side beam 124; in this way, the longitudinal beam 2 can reinforce the rigidity of the frame structure 12 in the longitudinal direction.
Further, referring to fig. 1 and fig. 2, as a specific embodiment of the battery pack structure of the electric vehicle provided by the present invention, the front side beam 121, the right side beam 124, the rear side beam 122, and the left side beam 123 are sequentially welded end to form the frame structure 12; as such, the frame structure 12 can function to support the battery module.
Further, referring to fig. 1 and fig. 2, as a specific embodiment of the battery pack structure of the electric vehicle provided by the present invention, each of the left side beam 123 and the right side beam 124 includes a front inclined section 1231 and a rear straight section 1232, and a distance between the two front inclined sections 1231 is increased in a front-to-rear direction; thus, the lower case 1 is conveniently fixed and mounted.
Further, referring to fig. 1 and fig. 2, as a specific embodiment of the battery pack structure of the electric vehicle provided by the present invention, a cross beam 3 is disposed between the two front inclined sections 1231, and two ends of the cross beam 3 are respectively connected to the connection positions of the front inclined sections 1231 and the rear straight section 1232; the longitudinal beam 2 is connected between the cross beam 3 and the rear edge beam 122; in this way, the design of the cross beam 3 may further strengthen the frame structure 12.
Further, referring to fig. 1 and fig. 2, as a specific embodiment of the battery pack structure of the electric vehicle provided by the present invention, the first mounting portions 21 are a plurality of mounting sleeves uniformly arranged along the length direction of the longitudinal beam 2. In the embodiment of the invention, the mounting sleeve is a machined part and is in a hollow cylindrical shape. The longitudinal beam 2 is longitudinally and fixedly connected with the middle part of the automobile body through a bolt and the mounting sleeve.
Further, referring to fig. 1 and fig. 2, as a specific embodiment of the battery pack structure of the electric vehicle provided by the present invention, the second mounting portion is a plurality of first mounting holes uniformly arranged along the length direction of the left side beam 123; the third mounting portions 1241 are a plurality of second mounting holes uniformly formed along the length direction of the right side beam 124. The left side beam 123 passes through the bolt warp first mounting hole and car left longeron 2 fixed connection, the right side beam 124 passes through the bolt warp second mounting hole and car right longeron 2 fixed connection.
In summary, the battery pack structure of the electric vehicle provided by the invention is characterized in that a longitudinal beam 2 is arranged in the lower shell 1 along the central axis direction thereof so as to divide the inner space of the lower shell 1 into two bilaterally symmetrical accommodating cavities 11 for accommodating battery modules; the longitudinal beam 2 is provided with a first mounting part 21 which is used for being longitudinally and fixedly connected with the middle part of the automobile body; a second mounting part (not shown in the figure) for fixedly connecting with a left longitudinal beam of the automobile is arranged on the left side of the lower shell 1, and a third mounting part 1241 for fixedly connecting with a right longitudinal beam of the automobile is arranged on the right side of the lower shell 1; thereby when the battery package is assembling with the electric automobile body, through first installation department 21 and the vertical fixed connection in automobile body middle part, through second installation department and 2 fixed connection of car left side longeron, through third installation department 1241 and the 2 fixed connection of car right side longeron to when improving the assembly stability of battery package and automobile body, battery package self and the whole car rigidity of car, also be favorable to whole car platformization, the electric automobile motorcycle type mounting point of different electric quantities is arranged and only need vertically lengthen shorten can, and need not arrange at battery package inside cross beam 3 and realize compatibly with whole car, and then reduced the design degree of difficulty, can the maximize utilizes battery package inner space, and improved battery package platform expansibility.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The battery pack structure of the electric automobile is characterized by comprising a battery module and a lower shell, wherein a longitudinal beam is arranged in the lower shell along the central axis direction of the lower shell so as to divide the inner space of the lower shell into two symmetrical containing cavities for containing the battery module; the longitudinal beam is provided with a first mounting part which is used for being longitudinally and fixedly connected with the middle part of the automobile body; the left side of casing is equipped with down be used for with car left side longeron fixed connection's second installation department, the right side of casing is equipped with down be used for with car right side longeron fixed connection's third installation department.
2. The battery pack structure according to claim 1, wherein the lower case and the side members are aluminum alloy extrusions.
3. The battery pack structure for the electric vehicle according to any one of claims 1 or 2, wherein the lower case includes a frame structure for supporting the battery module and a bottom plate sealing cover provided at a bottom of the frame structure; the longitudinal beam is arranged along the central axis direction of the frame structure.
4. The battery pack structure of claim 3, wherein the base plate is welded to the frame structure as a unitary structure.
5. The battery pack structure according to any one of claims 3 or 4, wherein the frame structure includes a front side member, a rear side member, a left side member, and a right side member, the front side member being disposed opposite to the rear side member, the left side member being disposed opposite to the right side member; the longitudinal beam is connected between the front edge beam and the rear edge beam; the second installation department is located on the left side roof beam, the third installation department is located on the right side roof beam.
6. The battery pack structure of claim 5, wherein the front side beam, the right side beam, the rear side beam and the left side beam are sequentially welded end to form the frame structure.
7. The battery pack structure according to any one of claims 5 or 6, wherein each of the left and right side members includes a front inclined section and a rear straight section, and a distance between the front inclined sections increases in a direction from front to rear.
8. The battery pack structure of claim 7, wherein a cross member is disposed between the two front inclined sections, and two ends of the cross member are respectively connected to the joints of the front inclined sections and the rear straight section; the longitudinal beam is connected between the cross beam and the rear edge beam.
9. The battery pack structure of claim 1, wherein the first mounting portion is a plurality of mounting sleeves uniformly arranged along the length of the side member.
10. The battery pack structure of any one of claims 1 or 5, wherein the second mounting portion is a plurality of first mounting holes uniformly arranged along the length direction of the left side member; the third installation department is for following a plurality of second mounting hole that right roof beam length direction evenly set up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911392761.5A CN113119705A (en) | 2019-12-30 | 2019-12-30 | Battery pack structure of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911392761.5A CN113119705A (en) | 2019-12-30 | 2019-12-30 | Battery pack structure of electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN113119705A true CN113119705A (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911392761.5A Pending CN113119705A (en) | 2019-12-30 | 2019-12-30 | Battery pack structure of electric automobile |
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| Country | Link |
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| CN (1) | CN113119705A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548117A (en) * | 2021-08-17 | 2021-10-26 | 蜂巢能源科技有限公司 | Vehicle body floor assembly of vehicle and vehicle |
| CN115472992A (en) * | 2022-08-31 | 2022-12-13 | 浙江吉利控股集团有限公司 | Battery package frame construction and car |
| GB2616411A (en) * | 2022-03-01 | 2023-09-13 | Viritech Ltd | Battery pack, chassis and vehicle including the same |
-
2019
- 2019-12-30 CN CN201911392761.5A patent/CN113119705A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548117A (en) * | 2021-08-17 | 2021-10-26 | 蜂巢能源科技有限公司 | Vehicle body floor assembly of vehicle and vehicle |
| CN113548117B (en) * | 2021-08-17 | 2024-02-27 | 蜂巢能源科技有限公司 | Vehicle body floor assembly and vehicle |
| GB2616411A (en) * | 2022-03-01 | 2023-09-13 | Viritech Ltd | Battery pack, chassis and vehicle including the same |
| GB2616411B (en) * | 2022-03-01 | 2024-03-20 | Viritech Ltd | Battery pack, chassis and vehicle including the same |
| CN115472992A (en) * | 2022-08-31 | 2022-12-13 | 浙江吉利控股集团有限公司 | Battery package frame construction and car |
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Effective date of registration: 20220107 Address after: 511434 No. 36, Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Applicant after: GAC AION New Energy Vehicle Co.,Ltd. Address before: 510030 23 building, Cheng Yue mansion 448-458, Dongfeng Middle Road, Yuexiu District, Guangzhou, Guangdong. Applicant before: GUANGZHOU AUTOMOBILE GROUP Co.,Ltd. |