CN218632271U - Battery package protective structure, battery package and vehicle - Google Patents
Battery package protective structure, battery package and vehicle Download PDFInfo
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- CN218632271U CN218632271U CN202222400057.3U CN202222400057U CN218632271U CN 218632271 U CN218632271 U CN 218632271U CN 202222400057 U CN202222400057 U CN 202222400057U CN 218632271 U CN218632271 U CN 218632271U
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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 relates to a battery package protective structure, battery package and vehicle, battery package protective structure includes inlayer protective structure and outer protective structure, inlayer protective structure includes flexible protective element, flexible protective element encircles the lateral wall setting of battery pack subassembly, outer protective structure encircles the flexible protective element setting; the outer layer protection structure comprises a protection frame, the protection frame comprises a plurality of protection side plates and a plurality of energy absorption blocks, and the adjacent protection side plates are connected through the energy absorption blocks. The utility model discloses battery package protective structure can diversified protection electric core subassembly, and the protecting effect is better.
Description
Technical Field
The utility model belongs to the technical field of the battery package protection, a battery package protective structure, battery package and vehicle are related to.
Background
The battery pack is a core component of the new energy vehicle. The battery pack comprises tray, upper cover and electric core subassembly, and upper cover sealing connection is in order to form the battery pack shell in the top of tray, and the electric core subassembly then sets up in the battery pack shell. When the battery pack shell is impacted or extruded in the using process, the battery pack shell can be seriously deformed, so that the danger of electric core components rupture, electrolyte leakage, battery ignition and even explosion and the like can be caused. Thus, protection of the battery pack is required.
Current battery package protective structure sets up a vertical supporting beam along automobile body length direction at the battery package frame mainly, but, the intensity of vertical supporting beam has only strengthened electric core subassembly fore-and-aft direction, does not improve the intensity of electric core subassembly left and right sides, can not diversified protection electric core subassembly, can not protect the battery package effectively, can lead to the battery package electric leakage or catch fire, brings very big potential safety hazard.
Therefore, the protection effect of the existing battery pack protection structure on the battery pack inner electric core assembly is poor.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: to current battery package protective structure, can not diversified protection electric core subassembly, to the relatively poor problem of the protective effect of the electric core subassembly in the battery package, provide a battery package protective structure, battery package and vehicle.
In order to solve the technical problem, on one hand, the utility model provides a battery pack protection structure, which comprises an inner layer protection structure and an outer layer protection structure, wherein the inner layer protection structure comprises a flexible protection element, the flexible protection element is arranged around the side wall of the battery pack assembly, and the outer layer protection structure is arranged around the flexible protection element;
the outer layer protection structure comprises a protection frame, the protection frame comprises a plurality of protection side plates and a plurality of energy absorption blocks, and the adjacent protection side plates are connected through the energy absorption blocks.
Optionally, the flexible protection element is a balloon, and the balloon surrounds the electric core assembly for one circle.
Optionally, the protective frame is in the shape of a rectangular ring.
Optionally, the energy absorption block is cylindrical, and the end face of the protection side plate facing the energy absorption block is an arc surface matched with the cylindrical surface of the energy absorption block.
Optionally, the outer protective structure further comprises a support assembly, and the protective frame is provided with the support assembly at least on the top surfaces of the two opposite protective side plates;
the support assembly comprises a support and an elastic element, the top of the support is spaced from the top surface of the protection side plate, so that a buffer space is formed inside the support, the elastic element is arranged in the buffer space, and the elastic element is connected between the top of the support and the top surface of the protection side plate.
Optionally, the support includes a support body and a support plate, a top side of the support plate is connected to a top of the support body, a bottom side of the support plate movably abuts against a top surface of the protective side plate, and the support plate is gradually inclined from the top side to the bottom side in a direction approaching the elastic element.
Optionally, the bracket main body is trapezoidal, and includes a top plate, a first oblique side plate, a second oblique side plate, a first connecting plate and a second connecting plate, the first oblique side plate and the second oblique side plate are connected to two sides of the top plate in the length direction, the first connecting plate is connected to one side of the first oblique side plate away from the top plate and is attached and fixed to the top surface of the protective side plate, and the second connecting plate is connected to one side of the second oblique side plate away from the top plate and is attached and fixed to the top surface of the protective side plate;
the supporting plates are arranged in two numbers, the top side of one supporting plate is connected to the joint of the top plate and the first inclined side plate, and the top side of the other supporting plate is connected to the joint of the top plate and the second inclined side plate.
On the other hand, the embodiment of the utility model provides a battery package, including tray, upper cover, battery pack spare and foretell battery package protective structure, the upper cover is connected on the tray to form battery package shell, battery pack spare and battery package protective structure set up in the battery package shell.
Optionally, the battery pack protection structure further comprises a bottom protection structure, the bottom protection structure comprises a bottom plate, the flexible protection element is arranged on the upper surface of the bottom plate, the outer edge of the bottom plate protrudes out of the flexible protection element, and the bottom plate is used for supporting the bottom of the battery pack core assembly;
an elastic silica gel plate is arranged in the tray, and the bottom plate is tightly pressed on the elastic silica gel plate.
According to the utility model discloses battery package protective structure and battery package, inlayer protective structure include flexible protective element, and flexible protective element encircles the lateral wall setting of electric core subassembly, and outer protective structure encircles flexible protective element and sets up. Like this, when the battery package received extrusion, striking or jolt, the mechanical energy that outside striking produced can be absorbed to the double-deck protective structure of the flexible protective element of inlayer protective structure and outer protective structure's protection frame to play buffering and antivibration effect, can protect the inside electric core subassembly of battery package, avoid causing mechanical damage, the protection curb plate absorbs outside collision energy and releases to the energy-absorbing piece, reduces the impact force to inside electric core subassembly. The utility model discloses battery package protective structure can diversified protection electric core subassembly, and the protecting effect is better.
In another aspect, an embodiment of the present invention provides a vehicle, including the above-mentioned battery pack.
Drawings
Fig. 1 is an exploded view of a battery pack according to an embodiment of the present invention;
fig. 2 is a schematic view of an inner protective structure and a bottom protective structure of a battery pack protective structure according to an embodiment of the present invention;
fig. 3 is a schematic view of an outer protection structure of a battery pack protection structure according to an embodiment of the present invention;
fig. 4 is a schematic view of a protection side plate, an energy absorption block and a support assembly of an outer protection structure of a battery pack protection structure according to an embodiment of the present invention.
The reference numerals in the specification are as follows:
1. a tray; 11. a sealing surface; 111. a second mounting hole; 12. lifting lugs; 2. an upper cover; 21. flanging; 211. a first mounting hole; 3. a battery cell assembly; 4. an inner protective structure; 41. a flexible protective element; 5. a bottom protective structure; 51. a base plate; 52. a liquid-cooled plate; 6. an outer protective structure; 61. a protective frame; 611. a protective side plate; 612. an energy absorbing block; 63. a support assembly; 631. a support; 6311. a stent body; 63111. a top plate; 63112. a first inclined side plate; 63113. a second inclined side plate; 63114. a first connecting plate; 63115. a second connecting plate; 6312. a support plate; 632. an elastic element; 7. elastic silica gel board.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1 to 4, an embodiment of the present invention provides a battery pack, including tray 1, upper cover 2, electric core assembly 3 and battery pack protection structure, upper cover 2 is connected on tray 1 to form a battery pack case, electric core assembly 3 and battery pack protection structure are disposed in the battery pack case. Battery package protective structure includes inlayer protective structure 4 and outer protective structure 6, inlayer protective structure 4 includes flexible protective element 41, flexible protective element 41 encircles the lateral wall setting of electricity core subassembly 3 is used for the side protection electricity core subassembly 3. The outer protective structure 6 is arranged around the flexible protective element 41; the outer layer protection structure 6 comprises a protection frame 61, wherein the protection frame 61 comprises a plurality of protection side plates 611 and a plurality of energy absorption blocks 612, and the adjacent protection side plates 611 are connected through the energy absorption blocks 612. Preferably, the energy absorbing block 612 is connected between the adjacent guard side plates 611 by bonding.
In an embodiment, the battery pack protection structure further includes a bottom protection structure 5, the bottom protection structure 5 includes a bottom plate 51, the flexible protection element 41 is disposed on the upper surface of the bottom plate 51, the outer edge of the bottom plate 51 protrudes from the flexible protection element 41, the bottom plate 51 is used for supporting the bottom of the cell assembly 3 of the battery pack, and the flexible protection element 41 is disposed around the sidewall of the cell assembly 3 and is used for protecting the cell assembly 3 from the side.
The battery core assembly 3 is formed by stacking a plurality of battery cells, and a plastic partition plate is usually clamped between adjacent battery cells.
The bottom edge of the upper cover 2 is provided with a flanging 21, the top surface of the tray 1 is provided with a sealing surface 11, and the flanging 21 is connected to the sealing surface 11 in a sealing manner. The flanging 21 is provided with a first mounting hole 211, and the sealing surface 11 is provided with a second mounting hole 111 vertically corresponding to the first mounting hole 211, so as to connect the upper cover 2 and the tray 1 through bolts or rivets. And sealing glue and/or press-fitting sealing strips are coated between the flanging 21 and the sealing surface 11. Lifting lugs 12 are arranged on two sides of the tray 1 in the length direction and used for installing the battery pack on the vehicle body through bolts. The lifting lug 12 can also be used for fixing the battery during transportation.
In one embodiment, the flexible protective element 41 is an air bag, and the air bag surrounds the electric core assembly 3 for a circle. The air bag is preferably a high-elasticity silica gel air bag. The air bag is filled with inert gas. The air bag is fixed to the upper surface of the bottom plate 51 by means of adhesion. The air bag is in a rectangular ring shape so as to adapt to the square electric core component 3.
The bottom plate 51 is made of a high-strength heat-insulation anti-collision material, has the advantages of small specific gravity, high specific strength, high specific modulus, high heat-insulation performance and the like, and can enhance the anti-collision mechanical performance of the battery pack protection structure. The bottom plate 51 plays a role in heat insulation, and can enhance the strength of the tray 1 to avoid damaging the internal components (the cell component 3) of the battery pack when being impacted by external force.
In one embodiment, the air bag is filled with inert gas. The inert gas may act as a flame retardant. In addition, the inert gas has stable performance and cannot explode during collision.
In an embodiment, referring to fig. 1 and fig. 2, the battery pack further includes a liquid cooling plate 52, the liquid cooling plate 52 is disposed on the upper surface of the bottom plate 51, an outer edge of the liquid cooling plate 52 is located inside the flexible protection element 41, and the liquid cooling plate 52 is configured to be attached to the bottom surface of the core assembly 3 for heat exchange. That is, the liquid cooling plate 52 is used for heating or cooling the battery, but also plays a role of reinforcing the strength of the electric core assembly 3.
In one embodiment, the liquid cooling plate 52 is adhered to the upper surface of the bottom plate 51.
In an embodiment, referring to fig. 1, an elastic silicone plate 7 is disposed in the tray 1, and the bottom plate 51 is pressed on the elastic silicone plate 7. The elastic silicone plate 7 and the bottom plate 51 can be fixed by means of adhesion, welding, or the like. The elastic silica gel plate 7 has high elasticity.
In an embodiment, referring to fig. 3, the protection frame 61 is in a rectangular ring shape, four protection side plates 611 are provided, and the energy absorption blocks 612 are provided at four corners of the protection frame 611.
In an embodiment, the protective side plates 611 and the bottom plate 51 are made of a high mechanical strength material, and the protective side plates 611 are bonded or welded to the bottom plate 51. The outer edge pattern area of the protective frame 61 is equal to or slightly smaller than the upper surface area of the bottom plate 51, so that the bottom plate can simultaneously fully carry the outer protective structure 6. The energy absorption block 612 is a high elastic buffer, such as elastic rubber, hollow crumple member, etc., and has a very strong impact resistance.
In one embodiment, referring to fig. 4, the energy-absorbing block 612 is cylindrical, and the end surface of the protective side plate 611 facing the energy-absorbing block 612 is a circular arc surface matching with the cylindrical surface of the energy-absorbing block 611. The cambered surface fit facilitates connection at the corners of the guard frame 611.
In an embodiment, the flexible guard element 41 is glued to the inside of the guard frame 61.
When the outside of the battery pack is impacted, the protective side plate 611 absorbs the external impact energy and releases the energy to the energy-absorbing block 612, reducing the impact force on the inner cell assembly 3.
In one embodiment, referring to fig. 3, the outer protective structure 6 further includes a support member 63, and the protective frame 61 is provided with the support member 63 on the top surfaces of two opposite protective side plates 611 in the length direction of the battery pack.
Of course. The protection frame 61 may be provided with the support member 63 on the top surfaces of two protection side plates 611 opposite in the width direction of the battery pack. The supporting components 63 may be disposed on the top surfaces of the four protection side plates 611.
In one embodiment, the supporting assembly 63 includes a bracket 631 and an elastic element 632, a top of the bracket 631 is spaced apart from a top surface of the protection side plate 611 to form a buffer space inside the bracket 631, the elastic element 632 is disposed in the buffer space, and the elastic element 632 is connected between the top of the bracket 631 and the top surface of the protection side plate 611. The top of the bracket 631 may abut against the upper cover 2 or may be spaced therefrom.
In an embodiment, referring to fig. 3 and 4, the support 631 includes a support body 6311 and a support plate 6312, wherein a top side of the support plate 6312 is connected to a top of the support body 6311, a bottom side of the support plate 6312 movably abuts on a top surface of the protection side plate 611, and the support plate 6312 is gradually inclined from the top side to the bottom side in a direction approaching the elastic element 632.
In an embodiment, referring to fig. 3, the holder main body 6311 is trapezoidal, the holder main body 6311 includes a top plate 63111, a first inclined side plate 63112, a second inclined side plate 63113, a first connecting plate 63114 and a second connecting plate 63115, the first inclined side plate 63112 and the second inclined side plate 63113 are connected to two sides of the top plate 63111 in the length direction, the first connecting plate 63114 is connected to one side of the first inclined side plate 63112 away from the top plate 63111 and is attached and fixed to the top surface of the protection side plate 611, the second connecting plate 63115 is connected to one side of the second inclined side plate 63113 away from the top plate 63111 and is attached and fixed to the top surface of the protection side plate 611; the supporting plates 6312 are provided in two numbers, wherein one top side of the supporting plate 6312 is connected to the connection between the top plate 63111 and the first inclined side plate 63112, and the other top side of the supporting plate 6312 is connected to the connection between the top plate 63111 and the second inclined side plate 63113.
In one embodiment, the brace body 6311 is integrally formed, reducing assembly processes and time. The first connecting plate 63114 and the second connecting plate 63115 are welded or bolted to the top surface of the guard side plate 611.
In one embodiment, the elastic element 632 is a cylindrical spring. Of course, an elastic rubber may be used. The upper end of the cylindrical spring is welded or bonded to the top plate 63111, and the lower end of the cylindrical spring is welded or bonded to the upper surface of the guard side plate 611.
The working principle of the support assembly 63 is as follows:
when the upper cover 2 is pressed or impacted, the support 631 is pressed (the upper cover 2 presses the support 631), the bottom side of the support plate 6312 moves toward the elastic element 632, the support 631 collapses, and the elastic element 632 is compressed to absorb energy, so as to buffer the stress of the protection frame 61 and increase the stability of the protection frame 61.
The support member 83 has an extremely strong impact resistance, and can support the upper cover 2 of the battery pack when the upper cover 2 is pressed or impacted, and is buffered by the support 631 and the elastic element 632 when the upper cover 9 is pressed or impacted. In this way, top protection of the battery pack is achieved.
When the battery pack is extruded, impacted or bumped, the flexible protective element 41 of the inner protective structure 4 and the double-layer protective structure of the protective frame 61 of the outer protective structure 6 can absorb mechanical energy generated by external impact, play roles of buffering and vibration prevention, protect the inner cell assembly 3 and the liquid cooling plate 52 of the battery pack, and avoid mechanical damage. The protective side plates 611 absorb external impact energy and release the energy to the energy-absorbing block 612, reducing the impact force on the internal core assembly 3.
The battery pack protection structure of this embodiment, when the battery pack strikes, the side protection of battery pack can be realized to the flexible protective element 41 of inner layer protection structure 4 and the protective frame 61 of outer layer protection structure 6, and the top protection of battery pack has been realized to supporting component 63, and the bottom protection of battery pack can be realized to bottom plate 51, the elastic silica gel board 7 of bottom protection structure 5. Like this, the electric core subassembly 3 in the protection battery package that can be diversified avoids receiving the electric core subassembly 3 that external force striking damaged the battery package, and the protecting effect is better.
On the other hand, the embodiment of the utility model provides a vehicle, including the battery package of above-mentioned embodiment.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A battery pack protection structure is characterized by comprising an inner layer protection structure and an outer layer protection structure, wherein the inner layer protection structure comprises flexible protection elements, the flexible protection elements are arranged around the side wall of an electric core assembly, and the outer layer protection structure is arranged around the flexible protection elements;
the outer layer protection structure comprises a protection frame, the protection frame comprises a plurality of protection side plates and a plurality of energy absorption blocks, and the adjacent protection side plates are connected through the energy absorption blocks.
2. The battery pack protective structure according to claim 1, wherein the flexible protective member is a balloon that surrounds the electric core assembly for one circle.
3. The battery pack protection structure according to claim 1, wherein the protection frame has a rectangular ring shape.
4. The battery pack protection structure according to claim 1, wherein the energy-absorbing block is cylindrical, and an end surface of the protection side plate facing the energy-absorbing block is a circular arc surface matching the cylindrical surface of the energy-absorbing block.
5. The battery pack protective structure according to claim 1, wherein the outer protective structure further comprises a support member, the protective frame being provided with the support member at least on top surfaces of the two opposing protective side plates;
the support assembly comprises a support and an elastic element, the top of the support and the top surface of the protection side plate are mutually spaced, so that a buffer space is formed inside the support, the elastic element is arranged in the buffer space, and the elastic element is connected between the top of the support and the top surface of the protection side plate.
6. The battery pack protection structure according to claim 5, wherein the bracket includes a bracket main body and a support plate, a top side of the support plate is connected to a top portion of the bracket main body, a bottom side of the support plate movably abuts on a top surface of the protection side plate, and the support plate is inclined from the top side to the bottom side in a direction gradually approaching the elastic member.
7. The battery pack protection structure according to claim 6, wherein the bracket main body is trapezoidal, and the bracket main body includes a top plate, a first oblique side plate, a second oblique side plate, a first connecting plate and a second connecting plate, the first oblique side plate and the second oblique side plate are connected to two sides of the top plate in the length direction, the first connecting plate is connected to one side of the first oblique side plate away from the top plate and is attached and fixed to the top surface of the protection side plate, and the second connecting plate is connected to one side of the second oblique side plate away from the top plate and is attached and fixed to the top surface of the protection side plate;
the supporting plates are arranged in two numbers, the top side of one supporting plate is connected to the joint of the top plate and the first inclined side plate, and the top side of the other supporting plate is connected to the joint of the top plate and the second inclined side plate.
8. A battery pack comprising a tray, a top cover, an electric core assembly and the battery pack protection structure of any one of claims 1-7, wherein the top cover is attached to the tray to form a battery pack housing, and the electric core assembly and the battery pack protection structure are disposed in the battery pack housing.
9. The battery pack of claim 8, wherein the battery pack protective structure further comprises a bottom protective structure, the bottom protective structure comprises a bottom plate, the flexible protective element is arranged on the upper surface of the bottom plate, the outer edge of the bottom plate protrudes out of the flexible protective element, and the bottom plate is used for supporting the bottom of the battery pack core assembly;
an elastic silica gel plate is arranged in the tray, and the bottom plate is tightly pressed on the elastic silica gel plate.
10. A vehicle characterized by comprising the battery pack according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222400057.3U CN218632271U (en) | 2022-09-09 | 2022-09-09 | Battery package protective structure, battery package and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222400057.3U CN218632271U (en) | 2022-09-09 | 2022-09-09 | Battery package protective structure, battery package and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN218632271U true CN218632271U (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222400057.3U Active CN218632271U (en) | 2022-09-09 | 2022-09-09 | Battery package protective structure, battery package and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759722A (en) * | 2023-08-21 | 2023-09-15 | 比亚迪股份有限公司 | Battery frame structure, battery pack and energy storage cabinet |
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2022
- 2022-09-09 CN CN202222400057.3U patent/CN218632271U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116759722A (en) * | 2023-08-21 | 2023-09-15 | 比亚迪股份有限公司 | Battery frame structure, battery pack and energy storage cabinet |
| CN116759722B (en) * | 2023-08-21 | 2024-02-27 | 比亚迪股份有限公司 | Battery frame structure, battery pack and energy storage cabinet |
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