CN113675513A - Composite material battery box structure - Google Patents
Composite material battery box structure Download PDFInfo
- Publication number
- CN113675513A CN113675513A CN202111029738.7A CN202111029738A CN113675513A CN 113675513 A CN113675513 A CN 113675513A CN 202111029738 A CN202111029738 A CN 202111029738A CN 113675513 A CN113675513 A CN 113675513A
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- China
- Prior art keywords
- composite material
- lower shell
- component
- frame
- frame component
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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
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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
- H01M50/258—Modular batteries; Casings provided with means for assembling
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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
- H01M50/258—Modular batteries; Casings provided with means for assembling
- H01M50/26—Assemblies sealed to each other in a non-detachable manner
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to the technical field of battery boxes, in particular to a composite material battery box body structure which comprises a frame assembly, a composite material lower shell assembly, a lower protection plate fixing nut, a rotary tapping rivet, a bonding structure glue and a structure sealant; the composite material lower shell component is arranged at the upper end of the frame component from top to bottom; the lower guard plate is arranged at the lower end of the frame component from bottom to top; the lower shell component and the lower guard plate of the composite material are respectively connected with the upper end and the lower end of the frame component in an adhesive and riveting mode through the lower guard plate fixing nut, the FDS, the adhesive structure glue and the structural sealant, and the lower shell of the composite material is integrally formed by composite die pressing of PCM prepreg and SMC, so that the strength, sealing and internal installation structure can be effectively guaranteed; the battery cell (module) mounting groove and the longitudinal beam structure are arranged in the frame assembly, the integral rigidity is improved, the support of the module is guaranteed, and the support rib is arranged on the periphery of the frame assembly to support the composite material in a circle in an auxiliary mode.
Description
Technical Field
The invention relates to the technical field of battery boxes, in particular to a composite material battery box body structure.
Background
With the high-speed development of the new energy automobile industry, the endurance mileage and the safety of the new energy automobile become two important indexes for measuring the automobile; aiming at improving the new energy endurance mileage, two main modes are provided for each large host factory, namely, the electric quantity capacity of the whole vehicle is increased; improving the energy density of the battery cell; the weight of the whole vehicle is reduced; firstly, the endurance mileage of the whole vehicle can be effectively improved by increasing the electric quantity of the whole vehicle, but the weight of the whole vehicle can be continuously increased due to continuous increase of the electric quantity at any time, so that the method has great limitation; secondly, the energy density of the battery core is improved, the battery core is generally a lithium iron phosphate, ternary type and solid-state battery, the limitation of the material for improving the energy density of the battery core is more, the current situation is still in a bottleneck stage, and great breakthrough is difficult to occur in a short time; each large host factory can think of ways to reduce the weight of the whole vehicle, and improve the lightweight effect of the whole vehicle to improve the endurance mileage of the whole vehicle; the traditional new energy automobile generally adopts aluminum extrusion tailor welding or steel plate punch forming, aluminum extrusion sectional materials have certain light weight effect, but the extrusion process limitation can only be group welding on the premise of consistent cross sections, and complex structures cannot be flexibly coped with, so that the light weight effect is reduced; the steel plate stamping or bending tailor-welded box body has poor corrosion resistance and poor lightweight effect;
the new energy automobile is popularized day by day, the safety of surrounding vehicles is challenged day by day, the problems of short circuit, fire, nature and the like of the new energy automobile are caused to occur constantly, people are panic in application of the new energy automobile, and if the safety of the automobile is improved, the problem becomes an industry troublesome problem; the safety of the whole automobile is improved mainly in the industry at present, the pressure-resistant grade of an internal high-low voltage wire harness is changed, the fixation of the wire harness is enhanced, the fixation strength of an electric core or a module is enhanced, and the splicing sealing performance of a box body is enhanced, but the safety problem of the automobile is difficult to avoid effectively due to the complexity of the running road condition of the automobile; 1. the box body is extruded by aluminum or stamped by a steel plate, so that the box body does not have high insulativity, and when a vehicle runs, high-voltage and low-voltage wire harnesses in the box body are easily scratched, and the box body has a short-circuit ignition risk; 2. at present, the box body is generally insulated by adding heat insulation cotton in the aluminum extrusion or steel plate stamping box body, but the heat insulation cotton occupies large space and has poor heat insulation effect and no integral heat insulation effect; 3. the aluminum profile box body is formed by welding a plurality of aluminum profiles in a splicing manner, but the aluminum welding has large influence, and welding beads are easy to crack in the bumpy operation of a vehicle, so that the air tightness of the whole package is influenced;
there is a need for a composite battery case structure that has good strength and sealing properties and a certain cushioning effect while achieving effective insulation.
Disclosure of Invention
In order to solve the technical problem, a composite material battery box body structure is provided.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a composite material battery box body structure is characterized by comprising a frame assembly, a composite material lower shell assembly, a lower protection plate fixing nut, a rotary tapping rivet, a bonding structure adhesive and a structure sealant;
the composite material lower shell component is arranged at the upper end of the frame component from top to bottom;
the lower guard plate is arranged at the lower end of the frame component from bottom to top;
the lower shell component and the lower guard plate of the composite material are respectively connected with the upper end and the lower end of the frame component in a gluing and riveting mode through a lower guard plate fixing nut, rotary tapping riveting, structural adhesive bonding and structural sealant.
Preferably, the frame assembly comprises a left side plate, a right side plate, a front side plate, a rear side plate and a side fixing sleeve;
the frame component is formed by welding and combining 4 aluminum extruded profiles,
the left side plate and the right side plate are oppositely arranged on two sides of the long side direction of the frame component;
the front and rear side plates are oppositely arranged on two sides of the short side direction of the frame component.
Preferably, the frame assembly further comprises a plurality of side fixing sleeves respectively arranged along the long side directions of the left and right side plates and the front and rear side plates.
Preferably, the composite material lower shell component comprises a composite material lower shell, an insert nut and a fixing sleeve;
a plurality of fixed sleeves are arranged at equal intervals along the long side direction of the composite material lower shell, and the connecting ends of the fixed sleeves are detachably arranged in the middle of the composite material lower shell respectively;
the insert screw female die is pressed in the middle of the lower shell made of the composite material and is arranged in one-to-one correspondence with the fixed sleeves.
Preferably, the composite material lower shell component further comprises side plate support ribs arranged on the upper surface and the bottom of the composite material lower shell.
Preferably, the lower guard plate includes a cushion pad; the buffer pad is arranged between the composite material lower shell component and the lower guard plate.
Compared with the prior art, the application has the beneficial effects that:
1. this application has realized through side fixed sleeve that when frame subassembly is being fixed with the outside, has realized carrying out effective fixed work to self.
2. This application has realized through curb plate knee when casing subassembly top-down puts into frame assembly under combined material, has realized the effective work of supporting to casing subassembly under the combined material through curb plate knee.
3. This application has realized how to the real-time effectual protection of combined material inferior valve casing bottom and has provided better thermal insulation performance to the box through the blotter.
Drawings
Fig. 1 is a perspective view of a composite battery lower case of the present invention;
fig. 2 is an exploded view of the lower case of the composite battery of fig. 1;
fig. 3 is a top view of the composite battery lower case of the present invention;
FIG. 4 is a longitudinal cross-sectional view taken at A-A of FIG. 3;
FIG. 5 is a transverse cross-sectional view taken at B-B of FIG. 3;
FIG. 6 is an enlarged partial cross-sectional view taken at C of FIG. 5;
FIG. 7 is an enlarged partial cross-sectional view at F of FIG. 5;
FIG. 8 is a perspective view of a composite lower housing assembly of the present invention;
FIG. 9 is a top view of a composite lower shell assembly of the present invention;
FIG. 10 is a cross-sectional view D-D of the composite lower shell assembly of FIG. 8 from a top view;
fig. 11 is a partially enlarged sectional view at E of fig. 10.
The reference numbers in the figures are:
1-a composite lower housing component; 2-a composite lower shell; 201-a layer of SMC material; 202-a PCM prepreg material layer; 203-composite lower shell stringers; 3-insert nut; 7-fixing the sleeve; 701-installing a sealing ring installation groove of an upper cover; 4-a frame assembly; 5-left and right side plates; 8-side fixing sleeve; 6-front and rear side plates; 601-side plate support ribs; 14-bonding a structural adhesive; 12-lower guard plate fixing nut; 13-rotary tapping and riveting; 15-structural sealant; 9-lower guard board; 10-buffer pad.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in fig. 1 to 11:
a composite material battery box body structure is characterized by comprising a frame component 4, a composite material lower shell component 1, a lower protection plate 9, a lower protection plate fixing nut 12, a rotary tapping riveting 13, a bonding structure adhesive 14 and a structure sealant 15;
the composite material lower shell component 1 is arranged at the upper end of the frame component 4 from top to bottom;
the lower guard plate 9 is arranged at the lower end of the frame component 4 from bottom to top;
the composite material lower shell component 1 and the lower guard plate 9 are respectively connected with the upper end and the lower end of the frame component 4 in a gluing and riveting mode through a lower guard plate fixing nut 12, a rotary tapping riveting 13, a bonding structural adhesive 14 and a structural sealant 15.
Specifically, through the mode of lower protective plate fixation nut 12, rotatory tapping riveting 13, bonding structure glue 14 and the sealed 15 of structure glue with combined material casing subassembly 1 and lower protective plate 9 respectively with frame subassembly 4 about both ends splice, the riveting is connected, not only can effectively guarantee joint strength and can also guarantee the leakproofness of junction, combined material casing subassembly 1, frame subassembly 4 and lower protective plate 9 all are the rectangle structure setting down, rotatory tapping riveting is known as FDS in the trade.
As shown in fig. 2:
the frame component 4 comprises a left side plate 5, a right side plate 5, a front side plate 6, a rear side plate 6 and a side fixing sleeve 8;
the frame component 4 is formed by welding and combining 4 aluminum extruded profiles,
the left and right side plates 5 are oppositely arranged at two sides of the long side direction of the frame component 4;
the front and rear side plates 6 are provided to face each other on both sides in the short side direction of the frame assembly 4.
Specifically, the left and right side plates 5 and the front and rear side plates 6, which are respectively disposed on both sides of the frame assembly 4 in the long side direction and the short side direction, are fixedly connected thereto by external connectors.
As shown in fig. 2:
the frame assembly 4 further includes a plurality of side fixing sleeves 8 respectively disposed along the long side directions of the left and right side plates 5 and the front and rear side plates 6.
Specifically, side fixed sleeve 8 is used for through a plurality of fixing bolt with frame subassembly 4 and outside fixed connection, owing to control curb plate 5 and front and back curb plate 6's surface, all is provided with a plurality of side fixed sleeve 8, when carrying out spacing fixed to frame subassembly 4 through locking bolt, through fixed to frame subassembly 4's four sides, can realize effectual spacing fixed work. This application has realized through side fixed sleeve 8 that when frame subassembly 4 is being fixed with the outside, realized being convenient for and external connection and realizing self can implement effective fixed work to self.
As shown in fig. 2, 9, 10, 11:
the composite material lower shell component 1 comprises a composite material lower shell 2, an insert nut 3 and a fixed sleeve 7;
a plurality of fixed sleeves 7 are arranged at equal intervals along the long side direction of the composite material lower shell 2, and the connecting ends of the fixed sleeves 7 are detachably arranged in the middle of the composite material lower shell 2 respectively;
the insert nuts 3 are molded in the middle of the composite material lower shell 2 and are arranged in one-to-one correspondence with the fixed sleeves 7.
Specifically, the composite material lower shell 2 is formed by compounding and compression molding an SMC material layer 201 and a PCM prepreg material layer 202, and the prepreg forms an integral outer envelope, so that the strength of the composite material lower shell 2 is ensured; the SMC material layer 201 forms an internal special-shaped non-uniform-thickness wall thickness structure; the insert nut 3 is molded in the middle of the composite material lower shell 2, and a battery or module fixing groove is formed in the composite material lower shell 2 and used for installing a module; meanwhile, the composite lower shell longitudinal beam 203 is designed, so that the fixation of the fixed sleeve 7 can be met while the integral rigidity of the lower shell is improved; the fixed sleeve 7 is provided with threads and an upper cover sealing ring mounting groove 701 arranged on an upper cover; casing 2 under fixed sleeve 7 passes through screw thread and combined material, and insert nut 3 is connected, adopts the sealed 15 auxiliary connections of glue of structure simultaneously in the connection process, guarantees its joint strength and leakproofness, fixed sleeve 7 is connected the back with combined material casing 2 down, and the screw thread of certain length can be stretched out to the bottom, and backplate 9 accomplishes preliminary fixed down through fixed sleeve 7 bottom screw thread, backplate fixation nut 12 down, carries out the round through rotatory tapping riveting 13 simultaneously and frame subassembly 4 and fixes.
As shown in fig. 4, 5, and 6:
the composite material lower casing assembly 1 further includes side plate support ribs 601 disposed on the upper surface and the bottom of the composite material lower casing 2.
Specifically, because casing subassembly 1 puts into frame subassembly 4 from the top down under the combined material, casing subassembly 1 supports casing subassembly 1 under the combined material through the curb plate brace rod 601 that casing 2 upper surface and bottom set up under the combined material casing subassembly 1, and glue 14 through the bonding structure and fill peripheral round gap simultaneously, guarantee joint strength. This application has realized through curb plate brace 601 that when casing assembly 1 top-down put into frame subassembly 4 under combined material, realized through curb plate brace 601 that casing assembly 1's effective support work under the combined material.
As shown in fig. 2:
the lower guard plate 9 includes a cushion pad 10; a cushioning pad 10 is provided between the composite lower shell assembly 1 and the lower fender 9.
Specifically, through the blotter 10 that sets up between casing subassembly 1 and the lower backplate 9 under the combined material for the protection nature of realization casing 2 bottom and the heat insulating ability of box under the combined material. The application realizes how to protect the bottom of the lower shell 2 made of the composite material effectively in real time and provide better heat insulation performance for the box body through the cushion pad 10.
The side fixing sleeve 8 is used for realizing that when the frame component 4 is fixed with the outside, the frame component is convenient to be connected with the outside and can be effectively fixed, and the lower shell of the composite material is integrally molded by composite die pressing of PCM prepreg and SMC, so that the strength, sealing and internal installation structure can be effectively guaranteed; the battery cell (module) mounting groove and the longitudinal beam structure are arranged in the frame assembly, the integral rigidity is improved, the support of the module is guaranteed, and the support rib is arranged on the periphery of the frame assembly to support the composite material in a circle in an auxiliary mode.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A composite material battery box body structure is characterized by comprising a frame component (4), a composite material lower shell component (1), a lower protection plate (9), a lower protection plate fixing nut (12), a rotary tapping riveting (13), bonding structural glue (14) and structural sealant (15);
the composite material lower shell component (1) is arranged at the upper end of the frame component (4) from top to bottom;
the lower guard plate (9) is arranged at the lower end of the frame component (4) from bottom to top;
the composite material lower shell component (1) and the lower guard plate (9) are respectively connected with the upper end and the lower end of the frame component (4) in a gluing and riveting mode through a lower guard plate fixing nut (12), a rotary tapping riveting (13), a bonding structural adhesive (14) and a structural sealant (15).
2. The composite material battery box body structure according to claim 1, wherein the frame assembly (4) comprises a left side plate, a right side plate (5), a front side plate, a rear side plate (6) and a side fixing sleeve (8);
the frame component (4) is formed by welding and combining 4 aluminum extruded profiles,
the left side plate and the right side plate (5) are oppositely arranged at two sides of the long side direction of the frame component (4);
the front and rear side plates (6) are oppositely arranged on two sides of the short side direction of the frame component (4).
3. The composite battery box structure according to claim 2, wherein the frame assembly (4) further comprises a plurality of side fixing sleeves (8) respectively arranged along the long side directions of the left and right side plates (5) and the front and rear side plates (6).
4. A composite material battery box structure according to claim 3, characterized in that the composite material lower case assembly (1) comprises a composite material lower case (2), an insert nut (3) and a fixing sleeve (7);
a plurality of fixed sleeves (7) are arranged at equal intervals along the long side direction of the composite material lower shell (2), and the connecting ends of the fixed sleeves (7) are detachably arranged in the middle of the composite material lower shell (2) respectively;
the insert nuts (3) are molded in the middle of the composite material lower shell (2) and are arranged in one-to-one correspondence with the fixed sleeves (7).
5. The composite material battery box body structure as claimed in claim 4, wherein the composite material lower case assembly (1) further comprises side plate support ribs (601) disposed on the upper surface and the bottom of the composite material lower case (2).
6. A composite battery case structure according to claim 5, wherein the lower guard (9) comprises a cushion (10); the buffer pad (10) is arranged between the composite material lower shell component (1) and the lower guard plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111029738.7A CN113675513A (en) | 2021-09-03 | 2021-09-03 | Composite material battery box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111029738.7A CN113675513A (en) | 2021-09-03 | 2021-09-03 | Composite material battery box structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113675513A true CN113675513A (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111029738.7A Pending CN113675513A (en) | 2021-09-03 | 2021-09-03 | Composite material battery box structure |
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| Country | Link |
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| CN (1) | CN113675513A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539078A (en) * | 2018-05-25 | 2018-09-14 | 铜陵市优车科技有限公司 | Battery case and its electric vehicle |
| CN209183581U (en) * | 2018-12-29 | 2019-07-30 | 宁德时代新能源科技股份有限公司 | Battery case |
| CN209709046U (en) * | 2019-04-11 | 2019-11-29 | 力神动力电池系统有限公司 | A kind of battery for electric automobile case |
| CN211480145U (en) * | 2020-03-09 | 2020-09-11 | 天津市捷威动力工业有限公司 | Lightweight power battery box structure |
| CN111987272A (en) * | 2020-09-04 | 2020-11-24 | 江苏塔菲尔动力系统有限公司 | Battery pack with liquid cooled from battery side |
| CN215896550U (en) * | 2021-09-03 | 2022-02-22 | 宁波信泰机械有限公司 | Composite material battery box structure |
-
2021
- 2021-09-03 CN CN202111029738.7A patent/CN113675513A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539078A (en) * | 2018-05-25 | 2018-09-14 | 铜陵市优车科技有限公司 | Battery case and its electric vehicle |
| CN209183581U (en) * | 2018-12-29 | 2019-07-30 | 宁德时代新能源科技股份有限公司 | Battery case |
| CN209709046U (en) * | 2019-04-11 | 2019-11-29 | 力神动力电池系统有限公司 | A kind of battery for electric automobile case |
| CN211480145U (en) * | 2020-03-09 | 2020-09-11 | 天津市捷威动力工业有限公司 | Lightweight power battery box structure |
| CN111987272A (en) * | 2020-09-04 | 2020-11-24 | 江苏塔菲尔动力系统有限公司 | Battery pack with liquid cooled from battery side |
| CN215896550U (en) * | 2021-09-03 | 2022-02-22 | 宁波信泰机械有限公司 | Composite material battery box structure |
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