CN116598679A - New energy battery pack - Google Patents
New energy battery pack Download PDFInfo
- Publication number
- CN116598679A CN116598679A CN202310677103.0A CN202310677103A CN116598679A CN 116598679 A CN116598679 A CN 116598679A CN 202310677103 A CN202310677103 A CN 202310677103A CN 116598679 A CN116598679 A CN 116598679A
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- side plate
- battery pack
- plate
- battery
- new energy
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 238000013016 damping Methods 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 239000002937 thermal insulation foam Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
-
- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
-
- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Inorganic Chemistry (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a new energy battery pack, which comprises a battery pack box body and a battery module positioned in the battery pack box body; the battery pack box body is provided with a bottom plate and a vertical plate positioned at the side edge of the bottom plate; the side face of the battery module is connected with the vertical plate through a plurality of elastic pieces, and the elastic pieces can adapt to relative displacement between the battery module and the vertical plate in the horizontal direction and/or the vertical direction. The new energy battery pack provided by the embodiment of the invention can reduce the impact on the internal structure of the battery caused by jolt of an automobile during running, and can enable the battery core to expand naturally, thereby achieving the purposes of improving the performance of the battery core and prolonging the service life of the battery core.
Description
Technical Field
The invention relates to the technical field of battery vibration reduction, in particular to a new energy battery pack.
Background
The new energy automobile is a novel automobile which uses a new energy technology battery to reduce emission pollution of greenhouse gases, and the automobile jolts in running so that the inside jolts, and the battery can be jolted to cause collision to damage parts in the battery pack. Along with the development of new energy automobiles, the innovation of the new energy automobile battery is more and more, but for the vibration reduction and impact resistance technology of the new energy automobile battery, there is still room for further improvement.
Disclosure of Invention
The invention aims to provide a new energy battery pack which can reduce impact on the internal structure of a battery caused by jolt of an automobile during running, and can naturally expand a battery core so as to achieve the purposes of improving the performance of the battery core and prolonging the service life of the battery core.
In order to achieve the above object, the present invention provides the following technical solutions:
a new energy battery pack comprises a battery pack box body and a battery module positioned in the battery pack box body;
the battery pack box body is provided with a bottom plate and a vertical plate positioned at the side edge of the bottom plate; the side face of the battery module is connected with the vertical plate through a plurality of elastic pieces, and the elastic pieces can adapt to relative displacement between the battery module and the vertical plate in the horizontal direction and/or the vertical direction.
In one embodiment, a buffer device is arranged between the bottom surface of the battery module and the bottom plate, and the buffer device can adapt to the relative displacement between the battery module and the bottom plate in the horizontal direction and/or the vertical direction.
In one embodiment, the buffer device comprises an upper magnet and a lower magnet, the upper magnet is arranged on the bottom surface of the battery module, the lower magnet is arranged on the bottom plate, and the polarities of the opposite ends of the upper magnet and the lower magnet are the same, so that the upper magnet and the battery module are suspended above the lower magnet.
In one embodiment, a first side plate is fixedly arranged on the side surface of the battery module, a second side plate is fixedly arranged on the inner side of the vertical plate, and corresponding protrusions are arranged on the opposite side surfaces of the first side plate and the second side plate;
the elastic piece is a damping rubber block, the damping rubber block is cylindrical, and two ends of the damping rubber block are respectively connected with the protrusions corresponding to the first side plate and the second side plate through interference fit; or alternatively
The elastic piece is a spring, and two ends of the elastic piece are fixedly connected with the protrusions corresponding to the first side plate and the second side plate respectively.
In one embodiment, the side surfaces of the first side plate and the second side plate are provided with a plurality of heat dissipation ribs.
In one embodiment, the battery module comprises a plurality of battery cells, wherein the battery cells are provided with opposite first side surfaces and opposite second side surfaces, and the area of the first side surfaces is smaller than that of the second side surfaces; the second side surfaces of the adjacent battery core units are connected; the first side of each electric core unit is connected with a first electric core side plate, the first electric core side plates are connected with the vertical plates through elastic pieces, the second side of each electric core unit at two ends of the battery module is connected with a second electric core side plate, and the second electric core side plates are connected with the vertical plates through elastic pieces.
In one embodiment, each of the first cell side plates and the vertical plate are connected through the elastic piece; and/or
Each second battery core side plate is connected with the vertical plate through the elastic piece.
In one embodiment, the second sides of adjacent cells are bonded by thermal insulation.
In one embodiment, a first box side plate opposite to each first cell side plate and a second box side plate opposite to each second cell side plate are arranged on the inner side of the vertical plate of the battery pack box; the first battery cell side plates are connected with the corresponding first box side plates, and the second battery cell side plates are connected with the corresponding second box side plates through elastic pieces.
In one embodiment, each of the cell units is provided with one of the upper magnets on the bottom surface.
In one embodiment, the cushioning device comprises a flexible bag having a cushioning liquid disposed therein.
Compared with the prior art, the embodiment of the invention has the advantages that:
according to the new energy battery pack provided by the embodiment of the invention, the fixing mode of the front end plate, the rear end plate and the battery cell bottom surface adhesive of the battery module in the prior art is canceled, and the elastic fixing mode of the suspended damping rubber block is adopted, so that the impact on the internal structure of the battery caused by jolt of an automobile in running is reduced, and the strength of the structure is improved. Because the fixed form of the end plate in the prior art is canceled, the battery cell can be naturally expanded, so that the expansion force of the battery cell is reduced, the internal pressure of the battery cell is reduced, and the performance and the service life of the battery cell are both increased. In addition, the embodiment of the invention adopts the aluminum side plate and is provided with the heat dissipation ribs, so that the battery module has good heat dissipation performance, and the performance and the service life of the battery core are also increased.
Drawings
The accompanying drawings, which 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. Wherein:
fig. 1 is a schematic structural diagram of a new energy battery pack according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a new energy battery pack according to an embodiment of the present invention, with a vertical plate of a battery pack case removed;
fig. 3 is a schematic diagram of a connection structure between a first side plate and a second side plate of the new energy battery pack according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first cell side plate of the new energy battery pack according to the embodiment of the present invention;
fig. 5 is a schematic structural view of a first case side plate of the new energy battery pack according to the embodiment of the present invention;
fig. 6 is a cross-sectional view of a connection structure between a first cell side plate and a first case side plate of the new energy battery pack according to the embodiment of the present invention;
fig. 7 is a schematic structural diagram of a second cell side plate of the new energy battery pack according to the embodiment of the present invention;
fig. 8 is a schematic structural view of a second side plate of the second case of the new energy battery pack according to the embodiment of the present invention;
fig. 9 is a cross-sectional view of a connection structure of a second cell side plate and a second case side plate of the new energy battery pack according to the embodiment of the present invention;
fig. 10 is a schematic structural diagram of a lower magnet and an upper magnet of the new energy battery according to the embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a cell unit of a new energy battery according to an embodiment of the present invention having a plurality of cells.
Reference numerals illustrate:
1-battery pack case, 11-bottom plate, 12-riser, 2-battery module, 21-cell unit, 211-cell, 21A-first side, 21B-second side, 22-heat insulating foam, 3-damping rubber block, 4-first side plate, 41-protrusion, 42-heat dissipating rib, 5-second side plate, 51-protrusion, 52-heat dissipating rib, 61-first cell side plate, 611-columnar protrusion, 612-heat dissipating rib, 62-second cell side plate, 621-protrusion, 622-heat dissipating rib, 71-first case side plate, 711-protrusion, 712-heat dissipating rib, 72-second case side plate, 721-protrusion, 722-heat dissipating rib, 81-upper magnet, 82-lower magnet.
Detailed Description
The invention will be described in detail below with reference to the drawings in connection with embodiments. The examples are provided by way of explanation of the invention and not limitation of the invention. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.
In the description of the present invention, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, and the terms "comprises" or "comprising," etc., are intended to indicate that the element or article appearing in front of the term encompasses elements or articles listed after the term and equivalents thereof, without excluding other elements or articles, and the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," etc., are directional or positional relationships as indicated based on the figures, merely for convenience of describing the invention and do not require that the invention be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the invention. The terms "coupled," "connected," and "configured" as used herein are to be construed broadly and may be, for example, fixedly connected or detachably connected; can be directly connected or indirectly connected through an intermediate component; either a wired electrical connection, a radio connection or a wireless communication signal connection, the specific meaning of which terms will be understood by those of ordinary skill in the art as the case may be.
As shown in fig. 1 and 2, an embodiment of the present invention provides a new energy battery pack, which includes a battery pack case 1 and a battery module 2 located in the battery pack case 1.
The battery pack case 1 has a bottom plate 11 and a riser 12 located on a side of the bottom plate 11, and in this embodiment, the bottom plate 11 and the riser 12 are rectangular, so that the battery pack case 1 is in a rectangular shape. The battery module 2 is also cuboid, and the side surfaces of the battery module 2 are connected with the corresponding vertical plates 12 through a plurality of elastic pieces, in the embodiment, the elastic pieces are damping rubber blocks 3, and the damping rubber blocks 3 can adapt to the relative displacement between the battery module 2 and the vertical plates 12 in any horizontal direction and/or vertical direction.
Specifically, in the embodiment of the invention, at least two opposite side surfaces of the battery module 2 are respectively provided with a damping rubber block 3, preferably four side surfaces are respectively provided with a damping rubber block 3, and the damping rubber blocks 3 are elastically connected with corresponding vertical plates 12 of the battery pack box body 1. When the battery pack case 1 receives vibration in the vertical direction, the horizontal direction, or both of the vertical direction and the horizontal direction from the jolt of the vehicle, the damping rubber block 3 can accommodate relative displacement between the battery module 2 and the riser 12 in any horizontal direction and/or vertical direction. The movement track of the battery module 2 may be in any direction, such as vertical, horizontal, or inclined, to provide better vibration reduction, buffering, and protection for the battery module 2 than a single movement direction. When the battery module 2 moves to a certain direction, the damping rubber block 3 positioned in the movement direction of the battery module 2 is compressed, and the damping rubber block 3 positioned in the direction opposite to the movement direction of the battery module 2 is stretched, so that the impact of the inner wall of the battery pack box body 1 on the battery module 2 can be effectively reduced. In addition, since the damping rubber block 3 can be stretched or compressed in any direction, it can accommodate relative displacement between the battery module 2 and the riser 12 in any horizontal and/or vertical direction. In addition, because the damping rubber block 3 between the battery pack box body 1 and the battery module 2 can be stretched or compressed in any direction, the battery cells in the battery module 2 can be naturally expanded, so that the expansion force of the battery cells can be reduced, the performance of the battery cells can be improved, and the service life of the battery cells can be prolonged.
In other embodiments, the elastic member may also be a spring, where two ends of the spring are fixedly connected to the battery module 2 and the corresponding riser 12, respectively, so as to accommodate relative displacement between the battery module 2 and the riser 12 in any horizontal direction and/or in any vertical direction.
In the embodiment of the invention, the connection of the battery module 2, the damping rubber block 3 and the battery pack box 1 can be the following structure: as shown in fig. 3, a first side plate 4 (preferably an aluminum plate, which is adhered to the battery module 2 by a heat conductive structural adhesive to improve the heat dissipation performance of the battery module 2) is fixedly disposed on the side of the battery module 2, and a second side plate 5 (preferably an aluminum plate, which is connected to the vertical plate 12 to improve the heat dissipation performance of the battery module 2) is fixedly disposed on the inner side of the vertical plate 12, and corresponding protrusions 41, 51, such as a cylinder shape and a square column shape, are disposed on the opposite sides of the first side plate 4 and the second side plate 5 as shown in fig. 3. The damping rubber block 3 is cylindrical, such as a cylinder or a square cylinder, and two ends of the damping rubber block are respectively connected with the protrusions 41 and 51 corresponding to the first side plate 4 and the second side plate 5 through interference fit, so that the battery module 2 can keep elastic connection with the vertical plate 12 of the battery pack case 1 no matter in which direction the battery module 2 moves, and the damping rubber block can provide supporting and buffering effects for the battery module 2. In order to improve the heat dissipation performance, the side surfaces of the first side plate 4 and the second side plate 5 are provided with a plurality of heat dissipation ribs 42 and 52. When the spring is selected as the elastic member, both ends of the spring are fixedly connected with the protrusions 41, 51 corresponding to the first side plate 4 and the second side plate 5, respectively.
In another embodiment of the present invention, as shown in fig. 1 and 2, the battery module 2 includes a plurality of battery cells 21, and the battery cells 21 have a plurality of battery cells, and as shown in fig. 11, when the battery cells 211 are plural, the battery cells 21 are assembled in a row, and the specific number of the battery cells 211 in the battery cells 21 is not limited, and the assembled form of the battery cells 21 is not limited.
A heat insulating member is arranged between the adjacent cell units 21 and is fixedly connected with the heat insulating member. In this embodiment, the heat insulating member is a heat insulating foam 22 and is adhered to the heat insulating foam 22. In other embodiments, the insulation may also be a water cooled panel. Further, as shown in fig. 11, the cell unit 21 has a first opposite side 21A and a second opposite side 21B, the area of the first side 21A is smaller than that of the second side 21B, and the second sides 21B of adjacent cell units 21 are bonded by heat insulation foam 22. The first side 21A of each cell unit 21 is connected to a first cell side plate 61 (preferably an aluminum plate, and is adhered to the battery module 2 by a heat conductive structural adhesive to improve the heat dissipation performance of the cell unit 21), and the second side 21B of the cell unit 21 located at two ends of the battery module 2 is connected to a second cell side plate 62 (preferably an aluminum plate, and is adhered to the battery module 2 by a heat conductive structural adhesive to improve the heat dissipation performance of the cell unit 21). The first cell side plates 61, the second cell side plates 62 and the riser 12 are connected by the elastic members, and all or part of the plurality of first cell side plates 61 may be connected to the riser 12 by the elastic members, and all or part of the plurality of second cell side plates 62 may be connected to the riser 12 by the elastic members. Preferably, each first cell side plate 61 is connected to the vertical plate 12 through the elastic member; and/or each second cell side plate 62 is connected to the riser 12 by the resilient member.
Further, the inner side of the vertical plate 12 of the battery pack case 1 is provided with a first case side plate 71 (preferably an aluminum plate, connected to the vertical plate 12 to improve the heat dissipation performance of the battery cell 21) disposed opposite to each first battery cell side plate 61, and a second case side plate 72 (preferably an aluminum plate, connected to the vertical plate 12 to improve the heat dissipation performance of the battery cell 21) disposed opposite to each second battery cell side plate 62. As shown in fig. 4-9, opposite sides of the first cell side plate 61 and the first box side plate 71 are provided with corresponding protrusions 611, 711, such as a cylinder shape, fang Zhuxing, and opposite sides of the second cell side plate 62 and the second box side plate 72 are provided with corresponding protrusions 621, 721, such as a cylinder shape, a square cylinder shape. The damping rubber block 3 is cylindrical, for example, cylindrical, and the damping rubber block 3 is arranged between the protrusions 611 and 711 corresponding to the first cell side plate 61 and the first box side plate 71 and between the protrusions 621 and 721 corresponding to the second cell side plate 62 and the second box side plate 72, and is connected with the end of the damping rubber block 3 through interference fit, so that the elastic connection between the battery module 2 and the battery pack box 1 can be maintained when the damping rubber block 3 is stretched. When the springs are selected as the elastic members, the springs are respectively arranged between the protrusions 611 and 711 corresponding to the first cell side plate 61 and the first box side plate 71, and between the protrusions 621 and 721 corresponding to the second cell side plate 62 and the second box side plate 72, and are fixedly connected with the ends of the springs.
As shown in fig. 4 to 9, in order to improve heat dissipation performance, the first cell side plate 61 and the first case side plate 71 are provided with transverse heat dissipation ribs 612 and 712, and the second cell side plate 62 and the second case side plate 72 are provided with longitudinal heat dissipation ribs 622 and 722.
In order to further improve the vibration reduction, buffering and protection effects of the embodiment of the invention on the battery module 2, a buffering device is arranged between the bottom surface of the battery module 2 and the bottom plate 11, and the buffering device can adapt to the relative displacement between the battery module 2 and the bottom plate in any horizontal direction and/or vertical direction.
As shown in fig. 2, in one embodiment of the present invention, the buffer device includes an upper magnet 81 and a lower magnet 82, wherein the upper magnet 81 is disposed on the bottom surface of the battery module 2 (preferably bonded to the battery module 2 by a heat-conducting structural adhesive to improve the heat dissipation performance of the battery module 2), the lower magnet 82 is disposed on the bottom plate 11 (preferably bonded to the bottom plate 11 by a heat-conducting structural adhesive to improve the heat dissipation performance of the battery module 2), and opposite ends of the upper magnet 81 and the lower magnet 82 have the same polarity, so that the upper magnet 81 and the battery module 2 are suspended above the lower magnet 82. The upper magnet 81 and the lower magnet 82 may be one whole plate, or as shown in fig. 2 and 10, the bottom surface of each cell unit 21 of the battery module 2 may be provided with one upper magnet 81, that is, the upper magnet 81 is a plurality of pieces, and the lower magnet 82 is a whole plate. The upper magnet 81 and the lower magnet 82 in the embodiment of the invention can suspend the battery module 2 above the bottom plate 11 of the battery pack case 1, and can adapt to the relative displacement between the battery module 2 and the bottom plate 11 in any horizontal direction and/or vertical direction, thereby providing better vibration reduction, impact resistance and protection for the battery module 2.
In another embodiment of the invention, the cushioning device may further comprise a flexible bag (not shown) having a cushioning liquid, preferably an insulating liquid, disposed therein. The flexible bag can adapt to the relative displacement between the battery module 2 and the bottom plate 11 in any horizontal direction and/or vertical direction due to the internal flowable insulating liquid, and provides better vibration reduction, impact resistance and protection for the battery module 2.
The new energy battery pack provided by the embodiment of the invention has the following advantages:
1. according to the new energy battery pack provided by the embodiment of the invention, the fixing mode of the front end plate, the rear end plate and the bottom surface adhesive of the battery module in the prior art is canceled, and the elastic fixing mode of the suspended damping rubber block is adopted, so that the impact on an internal structure caused by jolt of an automobile in running is reduced, and the strength of the structure is improved.
2. According to the new energy battery pack provided by the embodiment of the invention, the fixing form of the end plate in the prior art is canceled, so that the battery cell can be naturally expanded, the expansion force of the battery cell is reduced, the internal pressure of the battery cell is reduced, and the performance and the service life of the battery cell are obviously improved.
3. According to the new energy battery pack provided by the embodiment of the invention, the aluminum side plates (the first side plate, the second side plate, the first battery cell side plate, the second battery cell side plate, the first box side plate and the second box side plate) are provided with the heat dissipation ribs, so that the battery module has good heat dissipation performance, and the performance and the service life of the battery cell are improved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The new energy battery pack is characterized by comprising a battery pack box body and a battery module positioned in the battery pack box body;
the battery pack box body is provided with a bottom plate and a vertical plate positioned at the side edge of the bottom plate; the side face of the battery module is connected with the vertical plate through a plurality of elastic pieces, and the elastic pieces can adapt to relative displacement between the battery module and the vertical plate in the horizontal direction and/or the vertical direction.
2. The new energy battery pack according to claim 1, wherein a buffer device is provided between the bottom surface of the battery module and the bottom plate, and the buffer device can accommodate relative displacement between the battery module and the bottom plate in the horizontal direction and/or the vertical direction.
3. The new energy battery pack according to claim 2, wherein the buffer device comprises an upper magnet and a lower magnet, the upper magnet is arranged on the bottom surface of the battery module, the lower magnet is arranged on the bottom plate, and opposite ends of the upper magnet and the lower magnet have the same polarity, so that the upper magnet and the battery module are suspended above the lower magnet.
4. The new energy battery pack according to claim 1, 2 or 3, wherein a first side plate is fixedly arranged on the side surface of the battery module, a second side plate is fixedly arranged on the inner side of the vertical plate, and corresponding protrusions are arranged on the opposite side surfaces of the first side plate and the second side plate;
the elastic piece is a damping rubber block, the damping rubber block is cylindrical, and two ends of the damping rubber block are respectively connected with the protrusions corresponding to the first side plate and the second side plate through interference fit; or alternatively
The elastic piece is a spring, and two ends of the elastic piece are fixedly connected with the protrusions corresponding to the first side plate and the second side plate respectively.
5. The new energy battery pack of claim 4, wherein the first side plate and the second side plate are provided with a plurality of heat dissipating ribs on the sides.
6. The new energy battery pack of claim 1, 2 or 3, wherein the battery module comprises a plurality of cell units, the cell units having opposite first sides and opposite second sides, the first sides having an area smaller than an area of the second sides; the second side surfaces of the adjacent battery core units are connected; the first side of each electric core unit is connected with a first electric core side plate, the first electric core side plates are connected with the vertical plates through elastic pieces, the second side of each electric core unit at two ends of the battery module is connected with a second electric core side plate, and the second electric core side plates are connected with the vertical plates through elastic pieces.
7. The new energy battery pack of claim 6, wherein each of the first cell side plates and the risers are connected by the elastic member; and/or
Each second battery core side plate is connected with the vertical plate through the elastic piece.
8. The new energy battery pack of claim 6, wherein the second sides of adjacent cells are bonded by thermal insulation.
9. The new energy battery pack according to claim 6, wherein a first case side plate arranged opposite to each first cell side plate and a second case side plate arranged opposite to each second cell side plate are arranged on the inner side of the vertical plate of the battery pack case; the first battery cell side plates are connected with the corresponding first box side plates, and the second battery cell side plates are connected with the corresponding second box side plates through elastic pieces.
10. The new energy battery pack of claim 6, wherein each of said battery cells has a bottom surface provided with one of said upper magnets.
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| CN202310677103.0A CN116598679A (en) | 2023-06-08 | 2023-06-08 | New energy battery pack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119170981A (en) * | 2024-08-13 | 2024-12-20 | 中国第一汽车股份有限公司 | Battery Pack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119170981A (en) * | 2024-08-13 | 2024-12-20 | 中国第一汽车股份有限公司 | Battery Pack |
| CN119170981B (en) * | 2024-08-13 | 2025-12-05 | 中国第一汽车股份有限公司 | Battery pack |
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