CN211480145U - Lightweight power battery box structure - Google Patents
Lightweight power battery box structure Download PDFInfo
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- CN211480145U CN211480145U CN202020277820.6U CN202020277820U CN211480145U CN 211480145 U CN211480145 U CN 211480145U CN 202020277820 U CN202020277820 U CN 202020277820U CN 211480145 U CN211480145 U CN 211480145U
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- beam frame
- boundary beam
- box
- main part
- power battery
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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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Abstract
The utility model provides a lightweight power battery box structure, from the top down includes upper cover and lower box, the lower box includes the box main part, boundary beam frame and metal backplate, the box main part sets up on the boundary beam frame and is located the boundary beam frame, bond through the glue film between box main part and the boundary beam frame, the metal backplate is fixed to be set up below the boundary beam frame, can dismantle the connection between upper cover and the lower box, the boundary beam frame includes the closed framework that the side frame encloses, the bottom of side frame is provided with the bottom crossbeam, the outside of side frame is provided with the lug. The utility model discloses the box that will fix the battery module falls into box main part and boundary beam frame, and the degree of difficulty that has reduced processing has alleviateed holistic weight, and the weight of battery module mainly concentrates on the boundary beam frame, and the box main part only plays the effect of holding and sealed protection, and the setting of metal backplate can prevent that power battery system from splashing at electric automobile driving in-process stone, damages battery package main part, leads to the sealed inefficacy of battery package.
Description
Technical Field
The utility model belongs to the technical field of lithium ion battery device, especially, relate to a lightweight power battery box structure.
Background
Along with the increasing severity of energy problems, the call for energy conservation and environmental protection in the field of automobiles is increasing, the light weight of automobiles becomes a permanent topic, the change of subsidy policies of the national government on electric automobiles is gradually inclined to the improvement of safety and endurance mileage, and higher requirements are put forward on the energy density of power batteries. The power battery box body is a bearing and protecting structural member of a power battery, the weight of the power battery box body accounts for about 10% -20% of the weight of the whole battery pack, and most of the power battery box bodies in the current market are made of metal materials such as steel, aluminum and the like; the battery box is formed by drawing or extrusion process and connected by welding or riveting process, so that the weight of the box body is large, the cost is high, the environmental resistance is poor, and the energy density of a grouped battery system is low.
Disclosure of Invention
In view of this, the utility model aims at providing a lightweight power battery box structure can solve above-mentioned problem.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides a lightweight power battery box structure, from the top down includes upper cover and lower box, and the lower box includes box main part, boundary beam frame and metal backplate, and the box main part setting just is located the boundary beam frame on the boundary beam frame, bonds through the glue film between box main part and the boundary beam frame, and the glue film realizes being connected and sealed of box main part and boundary beam frame. The metal guard plate is fixedly arranged below the boundary beam frame, the upper cover and the lower box body are detachably connected, the boundary beam frame is provided with a projection welding stud or a rivet nut, and the upper cover and the lower box body are connected through the projection welding stud or the rivet nut on the boundary beam frame.
The boundary beam frame comprises a closed frame body enclosed by side frames, a bottom cross beam is arranged at the bottom of each side frame, and lifting lugs are arranged on the outer sides of the side frames. The connection of the power battery system and the whole vehicle can be realized through the lifting lugs. The side frame is formed by a roll forming process (not limited to roll forming, but a thermal forming process can be adopted), and the roll forming section is generally designed into a section of 'mouth' and 'day'. A special gluing area structure is designed on the box body, so that after gluing is prevented, the glue layer flows around to influence the sealing effect and gluing consistency. The edge beam frame bears the main weight including the battery module and the like inside the battery system.
Furthermore, the box body is enclosed by bottom surface and side, and the upper end of side is outwards provided with the connecting plate, is provided with the connecting hole on the connecting plate, and the projection welding double-screw bolt on the boundary beam frame passes the connecting hole, and the upper end of bottom surface is provided with a plurality of mounting holes and setpoint, and the bottom surface is provided with a plurality of strengthening ribs.
Further, a glue layer is coated on the position where the bottom surface of the box body main body is contacted with the bottom cross beam; and a glue layer is coated on the contact position between the side surface of the box body main body and the side frame of the side beam frame.
Furthermore, the side frame is of a hollow structure.
Furthermore, a plug-in fixing plate is arranged at the front end of the box body main body, and a high-pressure plug-in hole and a low-pressure plug-in hole are formed in the side wall of the front end of the box body main body.
Further, the box body is integrally formed.
Furthermore, a rivet nut is arranged on the bottom cross beam corresponding to the mounting hole, and a rivet head penetrates through the mounting hole of the box body.
Furthermore, the side surface of the edge beam frame is also provided with a positioning pin.
The boundary beam frame is made of high-strength thin-wall metal materials, the yield strength is larger than or equal to 420Mpa, the wall thickness is 1-1.5mm, the wall thickness is reduced in structural design, but the boundary beam frame is not limited to high-strength steel, and the boundary beam frame also can be made of metal materials with high specific strength and specific rigidity, wherein the specific strength is strength/density, and the specific rigidity is modulus/density, namely: high strength and modulus, low density metal material.
The box body is made of composite materials, has low density and light weight, and only plays a role in containing and sealing protection. The utility model discloses in adopt SMC combined material, not restrict the SMC, also can be engineering plastics/modified engineering plastics + CF/GF, carbon fiber etc. adjust the rigidity and the intensity of main part through changing fibre direction of arranging and fibrous layer thickness, make it satisfy power battery protection demand, SMC, RTM or vacuum assist thermoforming technology shaping mainly play sealed guard action, prevent that the battery package is inside to intake water or dust, influence power battery's life or electric incident appears; the reinforcing rib structures with different shapes are designed in the non-connection area of the box body main body and mainly comprise 'soil', 'king', 'L', 'Sichuan', 'meter', 'mouth', 'sun', 'field' and the like, so that on one hand, the attractiveness of the appearance is improved, on the other hand, the rigidity of the shell is increased, the integral mode is improved, and the resonance phenomenon between the battery pack and the whole vehicle in the actual use process is prevented.
Compared with the prior art, lightweight power battery box structure have following advantage:
lightweight power battery box structure, cut apart into box main part and boundary beam frame two parts with fixed battery module power battery's box, forming die quantity reduces, and 40% weight has been reduced, the degree of difficulty that has reduced processing has alleviateed holistic weight, box main part and boundary beam frame both adopt sticky technology to connect, can effectively reduce the welding deformation of battery package box, cross-section corrosion between the metal can be slowed down simultaneously, the life of battery is prolonged, the weight of battery module mainly concentrates on the boundary beam frame, the box main part only plays the effect of holding and sealed protection, the setting of metal backplate can prevent that power battery system from splashing at electric automobile driving in-process stone, damage battery package main part, lead to the sealed inefficacy of battery package.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic perspective view of a battery box structure according to an embodiment of the present invention;
fig. 2 is an exploded view of the battery case structure according to the embodiment of the present invention with the upper cover removed;
fig. 3 is a schematic perspective view of a box body according to an embodiment of the present invention;
fig. 4 is a top view of the box body according to the embodiment of the present invention;
fig. 5 is a schematic perspective view of an edge beam frame according to an embodiment of the present invention;
fig. 6 is a schematic structural view of the adhesive layer according to the embodiment of the present invention;
fig. 7 is a cross-sectional view of a side frame according to an embodiment of the present invention;
fig. 8 is a cross-sectional view of a side frame according to an embodiment of the present invention.
Description of reference numerals:
1-covering the upper cover; 2-a box body; 201-bottom surface; 202-side; 203-connecting plate; 3-a boundary beam frame; 4-a metal guard plate; 5-projection welding of studs; 6-side frame; 7-bottom cross beam; 8-lifting lugs; 9-mounting holes; 10-anchor point.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a lightweight power battery box structure, from the top down includes upper cover 1 and lower box, the lower box includes box main part 2, boundary beam frame 3 and metal backplate 4, box main part 2 sets up on boundary beam frame 3 and is located boundary beam frame 3, bond through the glue film between box main part 2 and the boundary beam frame 3, metal backplate 4 is fixed to be set up below boundary beam frame 3, can dismantle the connection between upper cover 1 and the lower box, be provided with projection welding double-screw bolt 5 or rivet nut on the boundary beam frame 3, connect through projection welding double-screw bolt 5 or rivet nut on the boundary beam frame 3 between upper cover 1 and the lower box. The boundary beam frame 3 comprises a closed frame body enclosed by side frames 6, a bottom cross beam 7 is arranged at the bottom of each side frame 6, and lifting lugs 8 are arranged on the outer sides of the side frames 6.
The box body main body 2 is surrounded by the bottom surface 201 and the side surface 202, the upper end of the side surface 202 is outwards provided with the connecting plate 203, the connecting plate 203 is provided with a connecting hole, the projection welding stud 5 on the boundary beam frame 3 penetrates through the connecting hole, the upper surface of the bottom surface 201 is provided with the plurality of mounting holes 9 and the positioning points 10, the bottom surface 201 is provided with the plurality of reinforcing ribs, and the positioning points 10 are provided with positioning pins.
A glue layer is coated on the position where the bottom surface 201 of the box body 2 is contacted with the bottom cross beam 7; the side of the box body 2 and the side frame of the side beam frame 3 are coated with glue layers.
The side frame 6 has a hollow structure.
The front end of the box body 2 is provided with the plug-in fixing plate, and the side wall of the front end of the box body 2 is provided with the high-pressure plug-in hole and the low-pressure plug-in hole.
The case body 2 is integrally formed.
And a rivet nut is arranged on the bottom cross beam 7 corresponding to the mounting hole, and a rivet head penetrates through the mounting hole of the box body.
The side surface of the edge beam frame 3 is also provided with a positioning pin.
The boundary beam frame 3 is made of high-strength thin-wall metal material, the yield strength is larger than or equal to 420Mpa, the wall thickness is 1-1.5mm, the wall thickness is reduced in structural design, but the boundary beam frame is not limited to high-strength steel, and metal material with high specific strength and specific rigidity can be adopted, wherein the specific strength is strength/density, and the specific rigidity is modulus/density, namely: high strength and modulus, low density metal material.
The box body 2 is made of composite materials, has low density and light weight, and only plays a role in containing and sealing protection. The utility model discloses in adopt SMC combined material, not restrict the SMC, also can be engineering plastics/modified engineering plastics + CF/GF, carbon fiber etc. adjust the rigidity and the intensity of main part through changing fibre direction of arranging and fibrous layer thickness, make it satisfy power battery protection demand, SMC, RTM or vacuum assist thermoforming technology shaping mainly play sealed guard action, prevent that the battery package is inside to intake water or dust, influence power battery's life or electric incident appears; reinforcing rib structures with different shapes are designed in a non-connection area of the box body main body 2, and mainly comprise 'soil', 'king', 'L', 'Sichuan', 'meter', 'mouth', 'sun', 'field' and the like, so that on one hand, the attractiveness of the appearance is improved, on the other hand, the rigidity of the shell is increased, the integral mode is improved, and the resonance phenomenon between the battery pack and the whole vehicle in the actual use process is prevented.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a lightweight power battery box structure which characterized in that: from the top down includes upper cover and lower box, the lower box includes box main part, boundary beam frame and metal backplate, the box main part sets up on the boundary beam frame and is located the boundary beam frame, bond through the glue film between box main part and the boundary beam frame, the metal backplate is fixed to be set up below the boundary beam frame, can dismantle the connection between upper cover and the lower box, the boundary beam frame includes the closed framework that the side frame encloses, the bottom of side frame is provided with the bottom crossbeam, the outside of side frame is provided with the lug.
2. The lightweight power battery box structure of claim 1, characterized in that: the box body is enclosed by bottom surface and side, and the upper end of side is outwards provided with the connecting plate, is provided with the connecting hole on the connecting plate, and the projection welding double-screw bolt on the boundary beam frame passes the connecting hole, and the upper end of bottom surface is provided with a plurality of mounting holes and setpoint, and the bottom surface is provided with a plurality of strengthening ribs.
3. The lightweight power battery box structure of claim 2, characterized in that: a glue layer is coated on the position where the bottom surface of the box body contacts with the bottom cross beam; and a glue layer is coated on the contact position between the side surface of the box body main body and the side frame of the side beam frame.
4. The lightweight power battery box structure of claim 1, characterized in that: the side frame is a hollow structure.
5. The lightweight power battery box structure of claim 2, characterized in that: the main part front end is provided with the plug-in components fixed plate, is provided with high pressure plug-in components hole and low pressure plug-in components hole on the lateral wall of main part front end.
6. The lightweight power battery box structure of claim 1, characterized in that: the box body is integrally formed.
7. The lightweight power battery box structure of claim 2, characterized in that: and a rivet nut is arranged on the bottom cross beam corresponding to the mounting hole, and a rivet head penetrates through the mounting hole of the box body.
8. The lightweight power battery box structure of claim 1, characterized in that: and the side surface of the edge beam frame is also provided with a positioning pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020277820.6U CN211480145U (en) | 2020-03-09 | 2020-03-09 | Lightweight power battery box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020277820.6U CN211480145U (en) | 2020-03-09 | 2020-03-09 | Lightweight power battery box structure |
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| Publication Number | Publication Date |
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| CN211480145U true CN211480145U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020277820.6U Active CN211480145U (en) | 2020-03-09 | 2020-03-09 | Lightweight power battery box structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599914A (en) * | 2020-11-16 | 2021-04-02 | 浙江零跑科技有限公司 | Power battery panel beating lower box assembly structure |
| CN113675513A (en) * | 2021-09-03 | 2021-11-19 | 宁波信泰机械有限公司 | Composite material battery box structure |
| CN113823870A (en) * | 2021-10-26 | 2021-12-21 | 宁波信泰机械有限公司 | Multi-material battery box lower tray |
-
2020
- 2020-03-09 CN CN202020277820.6U patent/CN211480145U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112599914A (en) * | 2020-11-16 | 2021-04-02 | 浙江零跑科技有限公司 | Power battery panel beating lower box assembly structure |
| CN112599914B (en) * | 2020-11-16 | 2022-07-08 | 浙江零跑科技股份有限公司 | Power battery panel beating lower box assembly structure |
| CN113675513A (en) * | 2021-09-03 | 2021-11-19 | 宁波信泰机械有限公司 | Composite material battery box structure |
| CN113823870A (en) * | 2021-10-26 | 2021-12-21 | 宁波信泰机械有限公司 | Multi-material battery box lower tray |
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