CN110459712B - Battery shell and sealing structure thereof - Google Patents
Battery shell and sealing structure thereof Download PDFInfo
- Publication number
- CN110459712B CN110459712B CN201910666079.4A CN201910666079A CN110459712B CN 110459712 B CN110459712 B CN 110459712B CN 201910666079 A CN201910666079 A CN 201910666079A CN 110459712 B CN110459712 B CN 110459712B
- Authority
- CN
- China
- Prior art keywords
- sealing
- shell
- piece
- case
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 121
- 230000000149 penetrating effect Effects 0.000 claims abstract description 23
- 239000003292 glue Substances 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 18
- 229920001971 elastomer Polymers 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000012466 permeate Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- 229920001973 fluoroelastomer Polymers 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 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
-
- 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
- H01M50/24—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 from their environment, e.g. from corrosion
-
- 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)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery shell and a sealing structure thereof, wherein a guide piece penetrates through a second shell and is in sealing connection with the second shell; the end cover is connected to the guide piece, and the first shell is fixed on the second shell through the cooperation of the end cover and the guide piece; then, the mounting member is respectively passed through the first through hole and the second through hole, and the protruding part of the mounting member is connected to the vehicle body to complete the mounting operation of the battery case. Because the guide member is in sealing connection with the second case, water is effectively prevented from penetrating into the battery module from between the gaps between the guide member and the second case. Meanwhile, as the first sealing piece on the guide piece is in sealing fit with the first shell, the second sealing piece on the end cover is also in sealing fit with the first shell, and therefore the guide piece and the first shell and the end cover and the first shell are in sealing states, water is effectively prevented from penetrating into the battery shell from the guide piece and the first shell and the end cover and the first shell, and the safety of the battery module is improved.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a battery shell and a sealing structure thereof.
Background
With the increasing maturity of new energy technology, new energy automobiles are also gradually coming into the public view. The new energy automobile adopts non-traditional fuel as a power source, integrates the power control and driving technologies of the automobile, and forms a new technology and a new structure automobile. The main core technology of the new energy automobile is a battery module, and the safety and stability of the battery module directly determine the performance of the whole automobile.
Currently, a battery module is generally mounted in a battery case, and the battery module is mounted on a vehicle body through the battery case. Therefore, the sealability of the battery case also determines the safety of the battery module. In order to be stably fixed on a vehicle body, a traditional battery shell is generally provided with a mounting point in the middle of the battery shell, and the traditional battery shell penetrates through the battery shell through bolts to be connected with the vehicle body. However, like this, destroy battery housing's wholeness very easily, lead to the water on the automobile body to permeate into the battery housing from the bolt, lead to battery module to intake or wet to lead to battery module fragile, take place spontaneous combustion or explosion phenomenon even, seriously influence the safety in utilization of whole car.
Disclosure of Invention
Based on this, it is necessary to provide a battery case and a sealing structure thereof, which can enhance the sealing effect and improve the safety of the battery module.
The technical scheme is as follows:
a sealing structure of a battery case, comprising: the guide piece is used for penetrating through the second shell and is in sealing connection with the second shell, and a first perforation is formed in the guide piece; the end cover is connected with the guide piece, the end cover is matched with the guide piece and used for fixing the first shell on the second shell, a second perforation communicated with the first perforation is formed in the end cover, and the first perforation and the second perforation are used for penetrating out of the installation piece; the first sealing piece and the second sealing piece are respectively used for being in sealing fit with two opposite sides of the first shell.
According to the sealing structure of the battery shell, the guide piece penetrates through the second shell and is in sealing connection with the second shell; the end cover is connected to the guide piece, and the first shell is fixed on the second shell through the cooperation of the end cover and the guide piece; then, the mounting member is respectively passed through the first through hole and the second through hole, and the protruding part of the mounting member is connected to the vehicle body to complete the mounting operation of the battery case. Because the guide member is in sealing connection with the second case, water is effectively prevented from penetrating into the battery module from between the gaps between the guide member and the second case. Meanwhile, as the first sealing piece on the guide piece is in sealing fit with the first shell, the second sealing piece on the end cover is also in sealing fit with the first shell, and therefore the guide piece and the first shell and the end cover and the first shell are in sealing states, and water is effectively prevented from penetrating into the battery shell from the guide piece and the first shell and the end cover and the first shell. Therefore, the mounting piece is separated from the battery shell through the guide piece, so that the problem that the tightness of the battery shell is reduced due to the fact that the mounting piece directly penetrates through the battery shell is avoided; meanwhile, the two ends of the guide piece are sealed, so that the guide piece is tightly connected with the battery shell, the battery shell is kept in a sealed state, and the battery module is prevented from being damaged due to the fact that water permeates into the battery shell, and the safety of the battery module is improved.
The principle and effect of the present invention will be further described with reference to the following schemes:
in one embodiment, the guide member is provided with a first bearing portion, the end cover is provided with a second bearing portion, the first bearing portion and the second bearing portion are matched to compress the first shell, the first sealing member is arranged on the first bearing portion, and the second sealing member is arranged on the second bearing portion.
In one embodiment, the first bearing portion is provided with a first mounting groove, the first mounting groove is arranged along the first perforation circumference, and the first sealing element is arranged in the first mounting groove.
In one embodiment, a second mounting groove is formed in the second pressure-bearing portion, the second mounting groove is formed along the second through hole in the circumferential direction, and the second sealing member is arranged in the second mounting groove.
In one embodiment, the sealing structure of the battery case further comprises a third sealing member, wherein an abutting portion is arranged in the first through hole, and the third sealing member is arranged between the abutting portion and the flange of the mounting member.
In one embodiment, the third seal has an opening therein, the opening being disposed in communication with the first bore.
The utility model provides a battery casing, includes first casing, second casing and the seal structure of the battery casing of arbitrary one above, the guide runs through the second casing, and with second casing sealing connection, first casing passes through the end cover with the guide cooperation is fixed on the second casing, first sealing member sets up the guide with between the first casing, the second sealing member sets up between the end cover with the first casing.
The battery shell adopts the sealing structure of the battery shell, and the guide piece penetrates through the second shell and is in sealing connection with the second shell; the end cover is connected to the guide piece, and the first shell is fixed on the second shell through the cooperation of the end cover and the guide piece; then, the mounting member is respectively passed through the first through hole and the second through hole, and the protruding part of the mounting member is connected to the vehicle body to complete the mounting operation of the battery case. Because the guide member is in sealing connection with the second case, water is effectively prevented from penetrating into the battery module from between the gaps between the guide member and the second case. Meanwhile, as the first sealing piece on the guide piece is in sealing fit with the first shell, the second sealing piece on the end cover is also in sealing fit with the first shell, and therefore the guide piece and the first shell and the end cover and the first shell are in sealing states, and water is effectively prevented from penetrating into the battery shell from the guide piece and the first shell and the end cover and the first shell. Therefore, the mounting piece is separated from the battery shell through the guide piece, so that the problem that the tightness of the battery shell is reduced due to the fact that the mounting piece directly penetrates through the battery shell is avoided; meanwhile, the two ends of the guide piece are sealed, so that the guide piece is tightly connected with the battery shell, the battery shell is kept in a sealed state, and the battery module is prevented from being damaged due to the fact that water permeates into the battery shell, and the safety of the battery module is improved.
In one embodiment, the second housing includes a frame structure and a bottom plate structure, a connection peripheral edge is provided on an inner wall of the frame structure, the connection peripheral edge is provided along a circumferential direction of the frame structure, and the bottom plate structure is connected to the connection peripheral edge.
In one embodiment, a first glue groove is formed in the connection peripheral edge, glue is injected into the first glue groove, and the bottom plate structure is adhered to the connection peripheral edge.
In one embodiment, the frame structure is provided with a first fixing hole, the first shell is covered on the frame structure, the first shell is provided with a second fixing hole opposite to the first fixing hole, and the first shell penetrates into the first fixing hole through a fixing piece and is fixed on the frame structure.
In one embodiment, the frame structure is provided with a third mounting groove, the third mounting groove extends along the circumferential direction of the frame structure, a fourth sealing element is arranged in the third mounting groove, and the fourth sealing element is in sealing fit with the first shell.
In one embodiment, the bottom plate structure comprises a middle longitudinal beam and more than two bottom plates, wherein two opposite sides of the middle longitudinal beam are respectively connected with the bottom plates, the bottom plates are connected with the connecting surrounding edges, and the guide piece penetrates through the middle longitudinal beam and is in sealing connection with the middle longitudinal beam.
In one embodiment, the frame structure includes a first beam, a first longitudinal beam, a first oblique beam, a second oblique beam and a second longitudinal beam that are sequentially connected, and the connection surrounding edges are all disposed on the first beam, the first longitudinal beam, the first oblique beam, the second oblique beam and the second longitudinal beam.
Drawings
FIG. 1 is a top view of a battery housing structure according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of the battery housing of FIG. 1 taken along the direction A-A;
FIG. 3 is an enlarged schematic view of the structure at circle B in FIG. 2;
FIG. 4 is an enlarged schematic view of the structure at circle C in FIG. 2;
FIG. 5 is an exploded view of a battery case according to an embodiment of the present invention;
fig. 6 is a bottom view of a battery case according to an embodiment of the present invention;
fig. 7 is a structural cross-sectional view of the battery case of fig. 1 taken along the direction D-D;
fig. 8 is an enlarged schematic view of the structure at the circle E in fig. 7.
Reference numerals illustrate:
100. the battery case 110, the sealing structure of the battery case 111, the guide, 1111, the first perforation, 1112, the first pressure-receiving portion, 1113, the first mounting groove 1114, the interference portion, 112, the end cap, 1121, the second perforation, 1122, the second pressure-receiving portion, 1123, the second mounting groove 113, the first seal, 114, the second seal, 115, the third seal, 1151, the opening, 120, the first case 121, the first fixing hole, 130, the second case, 131, the frame structure, 1311, the first cross member, 1312, the second cross member, 1313, the first longitudinal member, 1314, the second longitudinal member, 1315, the first diagonal member, 1316, the second diagonal member, 1317, the second fixing hole, 1318, the third mounting groove, 132, the floor structure 1321, the middle longitudinal member, 1322, the floor, 133, the connection peripheral edge, 1331, the first glue groove, 140, the mounting member, 150, the structural glue, 160, the substrate, 161, the second glue groove 170, the fixing member, and the fourth seal.
Detailed Description
The present invention will be further described in detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items.
In one embodiment, referring to fig. 1, 2 and 3, a sealing structure 110 of a battery case includes: guide 111, end cap 112, first seal 113, and second seal 114. The guide member 111 is configured to penetrate the second housing 130 and is in sealing connection with the second housing 130, and a first through hole 1111 is formed in the guide member 111. The end cap 112 is connected to the guide 111, and the end cap 112 cooperates with the guide 111 to fix the first housing 120 to the second housing 130, and the end cap 112 is provided with a second through hole 1121 communicating with the first through hole 1111. The first and second through holes 1111 and 1121 are used to pass out of the mounting member 140. The first sealing member 113 is disposed on the guide 111. A second seal 114 is provided on the end cap 112, the first seal 113 and the second seal 114 being adapted to sealingly engage opposite sides of the first housing 120, respectively.
The sealing structure 110 of the battery case penetrates the guide 111 through the second case 130 and is connected with the second case 130 in a sealing manner; the end cover 112 is connected to the guide member 111, and the first housing 120 is fixed on the second housing 130 by matching the end cover 112 with the guide member 111; next, the mounting members 140 are respectively passed through the first and second penetrating holes 1111 and 1121, and the protruding portions of the mounting members 140 are attached to the vehicle body to complete the mounting operation of the battery case 100. Due to the sealed connection between the guide 111 and the second case 130, water is effectively prevented from penetrating into the battery module from between the gaps between the guide 111 and the second case 130. Meanwhile, since the first sealing member 113 on the guide member 111 is in sealing engagement with the first housing 120, the second sealing member 114 on the end cap 112 is also in sealing engagement with the first housing 120, and thus, the sealing state is provided between the guide member 111 and the first housing 120, and between the end cap 112 and the first housing 120, and water is effectively prevented from penetrating into the battery housing 100 from between the guide member 111 and the first housing 120, and between the end cap 112 and the first housing 120. Accordingly, the guide member 111 separates the mounting member 140 from the battery case 100, so as to prevent the mounting member 140 from directly penetrating the battery case 100 to reduce the sealability of the battery case 100; meanwhile, the two ends of the guide piece 111 are sealed, so that the guide piece 111 is tightly connected with the battery shell 100, the battery shell 100 is kept in a sealed state, and the battery module is prevented from being damaged due to the fact that water permeates into the battery shell 100, and the safety of the battery module is improved.
It should be noted that, the guide 111 is in sealing connection with the second housing 130, and it should be understood that the portion of the guide 111 penetrating the second housing 130 is tightly connected with the second housing 130. The guide 111 and the second housing 130 may be sealed and connected by bonding or welding. The guide 111 of the present embodiment is connected to the second housing 130 by welding.
It should also be noted that the mounting member 140 may be a screw, pin, bolt, rivet, or other mounting member.
Specifically, the end cap 112 is detachably coupled to the guide 111, thereby facilitating rapid assembly or maintenance of the battery case 100. Wherein the end cap 112 and the guide 111 can be detachably connected by screw connection or snap connection. When the end cap 112 is screwed with the guide 111, the end cap 112 is provided with external threads, and the first through hole 1111 of the guide 111 is provided with internal threads. During the actual operation, the end cap 112 is inserted into the first perforation 1111 and is screwed.
Further, referring to fig. 3, a first bearing portion 1112 is disposed on the guide 111. The end cap 112 is provided with a second pressure receiving portion 1122. The first pressure-receiving portion 1112 cooperates with the second pressure-receiving portion 1122 to compress the first housing 120. The first seal 113 is provided on the first pressure bearing portion 1112. The second seal 114 is disposed on the second pressure-receiving portion 1122. In this way, the contact surface between the guide 111 and the first housing 120 and the contact surface between the end cover 112 and the first housing 120 are increased by the first pressure-bearing portion 1112 and the second pressure-bearing portion 1122, so that the first housing 120 is more stable and fixed; at the same time, the first housing 120 is effectively prevented from being pressed and deformed by the end cover 112 and the guide 111, which is advantageous to maintain the flatness of the first housing 120.
Further, referring to fig. 3, a first mounting groove 1113 is formed in the first pressure-bearing portion 1112. First mounting groove 1113 is disposed circumferentially along first perforation 1111. The first seal 113 is disposed within the first mounting groove 1113. It is understood that the first sealing member 113 is stably fixed to the first pressure receiving portion 1112 by the first mounting groove 1113, so that a better sealing effect is achieved with respect to the first housing 120. In particular, in the present embodiment, the first mounting groove 1113 is an annular groove, and meanwhile, the material of the first sealing member 113 may be nitrile rubber, urethane rubber, fluororubber, silicone rubber, acrylate rubber, or other rubber materials.
In one embodiment, referring to fig. 3, a second mounting groove 1123 is formed in the second bearing portion 1122. The second installation groove 1123 is provided along the second penetration hole 1121 in the circumferential direction. The second seal 114 is disposed within the second mounting groove 1123. Also, the second sealing member 114 is stably mounted by the second mounting groove 1123 so as to achieve a better sealing effect. The material of the second sealing member 114 may be nitrile rubber, polyurethane rubber, fluororubber, silicone rubber, acrylate rubber or other rubber materials.
In one embodiment, referring to fig. 3, when the first sealing member 113 and the second sealing member 114 are respectively used for sealing engagement with the first housing 120, the first sealing member 113 is disposed around the periphery of the second sealing member 114; alternatively, the second seal 114 is disposed around the periphery of the first seal 113, that is, the first seal 113 and the second seal 114 are not disposed directly opposite to each other. In this way, the first sealing member 113 and the second sealing member 114 are staggered, so that they respectively act on different portions of the first housing 120, and the sealing area is increased, so that the sealing performance between the guide member 111 and the first housing 120, and between the end cover 112 and the first housing 120 is better. In particular, in the present embodiment, the second sealing member 114 is disposed around the periphery of the first sealing member 113, so, when the end cover 112 is fixed, the first housing 120 will bend and deform toward the second housing 130 under the extrusion of the second sealing member 114, so that the first housing 120 and the second housing 130 are more tightly connected. Meanwhile, the first sealing member 113 and the second sealing member 114 are both O-shaped rings, the outer diameter of the first sealing member 113 is 36mm, and the outer diameter of the second sealing member 114 is 42mm.
In one embodiment, referring to fig. 3, the sealing structure 110 of the battery case further includes a third seal 115. The first through hole 1111 is provided with a contact 1114. The third seal 115 is adapted to be disposed between the interference 1114 and the flange of the mount 140. When the battery case 100 is assembled, the sealability between the flange of the mounting member 140 and the interference part 1114 is improved by the third sealing member 115, and thus, it is advantageous to improve the sealability of the entire vehicle. In particular, in the present embodiment, the material of the third seal 115 may also be nitrile rubber, polyurethane rubber, fluororubber, silicone rubber, acrylate rubber, or other rubber materials.
Further, referring to fig. 3, an opening 1151 is provided on the third seal 115. The opening 1151 is disposed in communication with the first perforation 1111. Since the mounting member 140 is coupled to the vehicle body through the first and second penetrating holes 1111, 1121, water on the vehicle body easily flows in from the second and first penetrating holes 1121, 1111 and is accumulated in the guide member 111, and corrodes the structure in the guide member 111, deteriorating the sealability of the battery case 100. For this reason, in this embodiment, the third sealing member 115 is provided with the opening 1151, so that the water in the guiding member 111 is timely discharged from the opening 1151, thereby avoiding corrosion of the guiding member 111 caused by water accumulation, keeping the structure of the guiding member 111 intact, and maintaining the sealing performance of the battery case 100.
In one embodiment, referring to fig. 1, 2 and 3, a battery case 100 includes a first case 120, a second case 130 and a sealing structure 110 of the battery case in any of the above embodiments. The guide 111 penetrates the second housing 130 and is hermetically connected with the second housing 130. The first housing 120 is fixed to the second housing 130 by the end cap 112 in cooperation with the guide 111. The first seal 113 is disposed between the guide 111 and the first housing 120. The second seal 114 is disposed between the end cap 112 and the first housing 120.
The battery case 100 is constructed by using the above-described sealing structure 110 for a battery case, and penetrating the guide 111 through the second case 130 and sealing-connecting the guide with the second case 130; the end cover 112 is connected to the guide member 111, and the first housing 120 is fixed on the second housing 130 by matching the end cover 112 with the guide member 111; next, the mounting members 140 are respectively passed through the first and second penetrating holes 1111 and 1121, and the protruding portions of the mounting members 140 are attached to the vehicle body to complete the mounting operation of the battery case 100. Due to the sealed connection between the guide 111 and the second case 130, water is effectively prevented from penetrating into the battery module from between the gaps between the guide 111 and the second case 130. Meanwhile, since the first sealing member 113 on the guide member 111 is in sealing engagement with the first housing 120, the second sealing member 114 on the end cap 112 is also in sealing engagement with the first housing 120, and thus, the sealing state is provided between the guide member 111 and the first housing 120, and between the end cap 112 and the first housing 120, and water is effectively prevented from penetrating into the battery housing 100 from between the guide member 111 and the first housing 120, and between the end cap 112 and the first housing 120. Accordingly, the guide member 111 separates the mounting member 140 from the battery case 100, so as to prevent the mounting member 140 from directly penetrating the battery case 100 to reduce the sealability of the battery case 100; meanwhile, the two ends of the guide piece 111 are sealed, so that the guide piece 111 is tightly connected with the battery shell 100, the battery shell 100 is kept in a sealed state, and the battery module is prevented from being damaged due to the fact that water permeates into the battery shell 100, and the safety of the battery module is improved.
Further, referring to fig. 2 and fig. 5, the second housing 130 includes a frame structure 131 and a bottom plate structure 132. The inner wall of the frame structure 131 is provided with a connecting surrounding edge 133. The connecting peripheral edge 133 is disposed along the circumference of the bezel structure 131. The base structure 132 is attached to the attachment perimeter edge 133. In this way, the bottom plate structure 132 is stably connected to the frame structure 131 by the connecting peripheral edge 133. In this embodiment, the portion of the bottom plate structure 132 connected to the connection surrounding edge 133 is in a step structure, and the size of the step structure is just matched with the connection surrounding edge 133, so that when the bottom plate structure 132 is connected to the connection surrounding edge 133, no height difference occurs, which is beneficial to improving the integrity of the battery case 100.
Further, referring to fig. 2 and 4, a first glue groove 1331 is disposed on the connecting peripheral edge 133. The first glue groove 1331 is used for injecting glue. The base structure 132 is bonded to the attachment perimeter edge 133. Therefore, the frame structure 131 and the bottom plate structure 132 of the embodiment are all connected by adopting an adhesive manner, so that the overall weight of the battery case 100 is greatly reduced on the premise of ensuring the structural strength of the battery case 100, and the whole vehicle is facilitated to realize light weight; meanwhile, the sealing performance between the connecting surrounding edge 133 and the bottom plate structure 132 is improved through glue, so that the waterproof safety performance of the battery shell 100 is improved. In addition, the first glue groove 1331 is formed on the connecting surrounding edge 133, so that the adhesive force of glue is improved, and the connection strength between the connecting surrounding edge 133 and the bottom plate structure 132 is improved. In this embodiment, the first glue groove 1331 is used for injecting the structural glue 150, so that the connection performance and the sealing performance between the connecting peripheral edge 133 and the bottom plate structure 132 are greatly improved. The model of the structural adhesive 150 can be a ceramic 4600f type, single-component epoxy resin adhesive, the baking dimension of the structural adhesive 150 is 180 ℃/30min, and the sizing temperature is 25 ℃ to 45 ℃. Meanwhile, before the connection surrounding edge 133 and the bottom plate structure 132 are bonded, an oxide film layer is arranged on the connection surrounding edge 133 and/or the bottom plate structure 132, and the adhesive force of the structural adhesive 150 is increased through the oxide film layer, so that the bonding strength of the connection surrounding edge 133 and the bottom plate structure 132 is improved. It should be noted that the oxide film layer may be prepared by an anodic oxidation process or a passivation process, and in the preparation process, a certain cleanliness of the workpiece surface is required to be maintained.
In one embodiment, referring to fig. 6, 7 and 8, the frame structure 131 is provided with a first fixing hole 121. The first housing 120 is disposed on the frame structure 131, and the first housing 120 is provided with a second fixing hole 1317 opposite to the first fixing hole 121. The first housing 120 is fixed to the frame structure 131 by penetrating the fixing member 170 through the first fixing hole 121 and the second fixing hole 1317. In this way, the first housing 120 is stably fixed on the frame structure 131. In particular, in the present embodiment, the first fixing hole 121 is disposed on the outer edge of the frame structure 131, that is, the portion of the frame structure 131 close to the second case 130 is effectively prevented from being perforated to cause the sealing failure of the battery case 100. Meanwhile, the fixing member 170 of the present embodiment is a hot-melt tapping screw, and the number of times of assembling and disassembling the battery case 100 is advantageously increased by the hot-melt tapping screw.
Further, referring to fig. 8, a third mounting groove 1318 is disposed on the frame structure 131. The third mounting groove 1318 extends along the circumferential direction of the frame structure 131, and a fourth sealing member 180 is disposed in the third mounting groove 1318, and the fourth sealing member 180 is in sealing fit with the first housing 120. In this way, the tightness between the first housing 120 and the bezel structure 131 is increased by the fourth seal 180. Meanwhile, the third mounting groove 1318 is formed in the frame structure 131, which is beneficial to achieving the effect of tightening force balance support in the fixing process of the first housing 120 and the frame structure 131. In particular, in the present embodiment, the fourth seal 180 is a sealant.
In one embodiment, referring to FIG. 5, floor structure 132 includes a center rail 1321 and two or more floors 1322. Opposite sides of center rail 1321 are each connected to a floor 1322, floor 1322 is connected to connecting perimeter 133, and guide 111 extends through center rail 1321 and is sealingly connected to center rail 1321. Therefore, in the process of closing the vehicle, the middle mounting point of the battery housing 100 is stressed on the middle longitudinal beam 1321, which is beneficial to improving the mounting stability of the battery housing 100 on the vehicle body. In this embodiment, two sides of the middle longitudinal beam 1321 are respectively bonded with two or more bottom plates 1322, and the bottom plates 1322 are bonded with the connecting surrounding edges 133, so that most of the connection modes of the battery case 100 in this embodiment are connected by adopting the bonding mode, and the overall weight of the battery case 100 is greatly reduced. In this embodiment, the middle longitudinal beam 1321 and the frame structure 131 are respectively provided with a fixing base for fixing the battery module, so that it can be known that the battery module is supported on the middle longitudinal beam 1321 and the frame structure 131, but not on the bottom plate 1322, and thus, the bottom plate structure 132 is prevented from being deformed due to being stressed, which is beneficial to maintaining the structural stability of the battery housing 100.
In one embodiment, referring to fig. 5, the battery case 100 further includes a substrate 160, and the bottom plate structure 132 is disposed on the substrate 160. By the substrate 160, the bottom plate structure 132 is further protected, so that the safety performance of the battery case 100 is further improved. In this embodiment, the substrate 160 is provided with a second glue groove 161, and glue is injected into the second glue groove 161 to bond the bottom plate structure 132 and the substrate 160.
In one embodiment, referring to fig. 1, the frame structure 131 includes a first cross member 1311, a first longitudinal member 1313, a first diagonal member 1315, a second cross member 1312, a second diagonal member 1316, and a second longitudinal member 1314 connected in sequence. The connecting rims 133 are disposed on the first cross member 1311, the first longitudinal member 1313, the first diagonal member 1315, the second cross member 1312, the second diagonal member 1316, and the second longitudinal member 1314.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. A sealing structure of a battery case, comprising:
the guide piece is used for penetrating through the second shell and is in sealing connection with the second shell, and a first perforation is formed in the guide piece;
the end cover is connected with the guide piece, the end cover is matched with the guide piece and used for fixing the first shell on the second shell, a second perforation communicated with the first perforation is formed in the end cover, and the first perforation and the second perforation are used for penetrating out of the installation piece; and
The first sealing piece and the second sealing piece are respectively used for being in sealing fit with two opposite sides of the first shell;
the guide piece is provided with a first pressure bearing part, the end cover is provided with a second pressure bearing part, the first pressure bearing part is matched with the second pressure bearing part to compress the first shell, the first sealing piece is arranged on the first pressure bearing part, and the second sealing piece is arranged on the second pressure bearing part;
the first pressure-bearing part is provided with a first mounting groove, the first mounting groove is circumferentially arranged along the first perforation, and the first sealing element is arranged in the first mounting groove;
the second pressure-bearing part is provided with a second mounting groove, the second mounting groove is circumferentially arranged along the second perforation, and the second sealing element is arranged in the second mounting groove;
the first sealing piece is arranged around the periphery of the second sealing piece in a surrounding way; alternatively, the second seal member is provided around the periphery of the first seal member;
the battery shell comprises a first shell and a second shell, and the guide piece and the second shell are in sealing connection in an adhesive mode or a welding mode.
2. The seal structure of a battery case according to claim 1, further comprising a third seal member having an interference portion provided in the first through hole, the third seal member being configured to be disposed between the interference portion and a flange of the mount member.
3. The sealing structure of the battery case according to claim 2, wherein an opening is provided in the third sealing member, the opening being provided in communication with the first penetration hole.
4. A battery case, characterized by comprising a first case, a second case and a sealing structure of the battery case according to any one of claims 1-3, wherein the guide member penetrates through the second case and is in sealing connection with the second case, the first case is fixed on the second case through the cooperation of the end cover and the guide member, the first sealing member is arranged between the guide member and the first case, and the second sealing member is arranged between the end cover and the first case.
5. The battery housing of claim 4, wherein the second housing comprises a frame structure and a bottom plate structure, wherein a connecting peripheral edge is provided on an inner wall of the frame structure, the connecting peripheral edge is provided along a circumferential direction of the frame structure, and the bottom plate structure is connected to the connecting peripheral edge.
6. The battery housing of claim 5, wherein the connection perimeter is provided with a first glue slot for injecting glue therein, and wherein the base plate structure is bonded to the connection perimeter.
7. The battery case according to claim 5, wherein a first fixing hole is formed in the frame structure, the first case is covered on the frame structure, a second fixing hole opposite to the first fixing hole is formed in the first case, and the first case penetrates through the first fixing hole and the second fixing hole through a fixing piece and is fixed on the frame structure; or,
the frame structure is provided with a third mounting groove, the third mounting groove extends along the circumferential direction of the frame structure, a fourth sealing piece is arranged in the third mounting groove, and the fourth sealing piece is in sealing fit with the first shell.
8. The battery case according to claim 5, wherein the floor structure comprises a middle longitudinal beam and more than two floors, opposite sides of the middle longitudinal beam are respectively connected with the floors, the floors are connected with the connecting surrounding edges, and the guide piece penetrates through the middle longitudinal beam and is connected with the middle longitudinal beam in a sealing manner; or,
the frame structure comprises a first cross beam, a first longitudinal beam, a first oblique beam, a second cross beam, a second oblique beam and a second longitudinal beam which are sequentially connected, wherein connecting surrounding edges are arranged on the first cross beam, the first longitudinal beam, the first oblique beam, the second cross beam, the second oblique beam and the second longitudinal beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910666079.4A CN110459712B (en) | 2019-07-23 | 2019-07-23 | Battery shell and sealing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910666079.4A CN110459712B (en) | 2019-07-23 | 2019-07-23 | Battery shell and sealing structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110459712A CN110459712A (en) | 2019-11-15 |
| CN110459712B true CN110459712B (en) | 2024-01-26 |
Family
ID=68483092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910666079.4A Active CN110459712B (en) | 2019-07-23 | 2019-07-23 | Battery shell and sealing structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110459712B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993848A (en) * | 2019-11-29 | 2020-04-10 | 广汽新能源汽车有限公司 | Lower shell, frame and connecting structure thereof |
| US11515600B2 (en) * | 2019-12-09 | 2022-11-29 | GM Global Technology Operations LLC | Electric vehicle battery enclosure with sealant and seal bead height maintenance |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000308946A (en) * | 1999-04-28 | 2000-11-07 | Kuroda Precision Ind Ltd | Toolholder with fluid passage |
| CN204333063U (en) * | 2014-12-02 | 2015-05-13 | 上海航天电源技术有限责任公司 | A kind of electrokinetic cell system Housing seal arrangement |
| WO2018099351A1 (en) * | 2016-11-29 | 2018-06-07 | 宁德时代新能源科技股份有限公司 | Battery module |
| WO2018152916A1 (en) * | 2017-02-24 | 2018-08-30 | 深圳市大疆创新科技有限公司 | Battery compartment and unmanned aerial vehicle |
| CN108550737A (en) * | 2018-05-16 | 2018-09-18 | 湖南江南汽车制造有限公司 | A kind of Battery case |
| CN208393092U (en) * | 2018-05-17 | 2019-01-18 | 东软集团股份有限公司 | battery pack and its mounting assembly |
| CN109671890A (en) * | 2019-01-11 | 2019-04-23 | 广州纵通汽车设计有限公司 | Battery box body and battery case |
| CN210379152U (en) * | 2019-07-23 | 2020-04-21 | 广汽新能源汽车有限公司 | Battery case and sealing structure thereof |
-
2019
- 2019-07-23 CN CN201910666079.4A patent/CN110459712B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000308946A (en) * | 1999-04-28 | 2000-11-07 | Kuroda Precision Ind Ltd | Toolholder with fluid passage |
| CN204333063U (en) * | 2014-12-02 | 2015-05-13 | 上海航天电源技术有限责任公司 | A kind of electrokinetic cell system Housing seal arrangement |
| WO2018099351A1 (en) * | 2016-11-29 | 2018-06-07 | 宁德时代新能源科技股份有限公司 | Battery module |
| WO2018152916A1 (en) * | 2017-02-24 | 2018-08-30 | 深圳市大疆创新科技有限公司 | Battery compartment and unmanned aerial vehicle |
| CN108550737A (en) * | 2018-05-16 | 2018-09-18 | 湖南江南汽车制造有限公司 | A kind of Battery case |
| CN208393092U (en) * | 2018-05-17 | 2019-01-18 | 东软集团股份有限公司 | battery pack and its mounting assembly |
| CN109671890A (en) * | 2019-01-11 | 2019-04-23 | 广州纵通汽车设计有限公司 | Battery box body and battery case |
| CN210379152U (en) * | 2019-07-23 | 2020-04-21 | 广汽新能源汽车有限公司 | Battery case and sealing structure thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110459712A (en) | 2019-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110459712B (en) | Battery shell and sealing structure thereof | |
| CA2424212C (en) | Constituent part for fuel cell | |
| KR101856334B1 (en) | vessel having airtight nozzle | |
| US20030104262A1 (en) | Constituent part for fuel cell | |
| US5117873A (en) | Bladder edge seal and holder for hydraulic fluid pressure accumulator | |
| KR102598526B1 (en) | Engine mount for vehicle | |
| JPS61116769A (en) | Stack frame fastening device of fuel cell | |
| CN207977365U (en) | Battery pack and vehicle with the battery pack | |
| CN210379152U (en) | Battery case and sealing structure thereof | |
| CN217215036U (en) | Sealing structure, battery and vehicle | |
| CN107195855A (en) | A kind of fluid injection seal assembly, power battery cover board component and electrokinetic cell | |
| CN111146383B (en) | Battery pack, lower shell and lower shell manufacturing method | |
| CN211599177U (en) | High-efficient panel beating seal structure | |
| CN210092146U (en) | Battery sealing ring | |
| CN211641861U (en) | Bottom plate structure and lower shell | |
| CN208674224U (en) | Battery pack and electric vehicle | |
| CN109411640B (en) | Battery box, battery package and vehicle | |
| CN213026289U (en) | Battery pack shell and battery pack with same | |
| US2627533A (en) | Battery terminal post mounting | |
| CN209000967U (en) | A kind of mounting structure of the sealing of the plug connector in battery pack | |
| CN109407497B (en) | Sealing ring, sealing method of watch shell assembly and watch shell assembly | |
| CN217623100U (en) | Mounting structure of battery pack, battery pack and vehicle | |
| CN219435200U (en) | Waterproof gland of camera lens | |
| CN220544105U (en) | Waterproof battery case and battery module | |
| CN112582966A (en) | Sealing structure of cable and motor with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |