CN116345049A - Electrochemical device and electric equipment - Google Patents

Electrochemical device and electric equipment Download PDF

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Publication number
CN116345049A
CN116345049A CN202310341672.8A CN202310341672A CN116345049A CN 116345049 A CN116345049 A CN 116345049A CN 202310341672 A CN202310341672 A CN 202310341672A CN 116345049 A CN116345049 A CN 116345049A
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CN
China
Prior art keywords
protrusion
housing
wall
electrochemical device
along
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.)
Pending
Application number
CN202310341672.8A
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Chinese (zh)
Inventor
廖绪滨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Xinnengda Technology Co Ltd
Original Assignee
Xiamen Xinnengda Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xiamen Xinnengda Technology Co Ltd filed Critical Xiamen Xinnengda Technology Co Ltd
Priority to CN202310341672.8A priority Critical patent/CN116345049A/en
Publication of CN116345049A publication Critical patent/CN116345049A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • 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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The application discloses an electrochemical device and consumer, the electrochemical device includes group battery, first casing, second casing and first sealing member. The first shell is provided with a containing cavity and a first opening communicated with the containing cavity, the containing cavity contains the battery pack, and the first shell is provided with a first protrusion. The second shell is arranged at the first opening and is provided with a second bulge, the second bulge is arranged on one side of the first bulge along the first direction, and the second bulge is arranged to be propped against the first bulge when the second shell moves relative to the first shell along the direction opposite to the first direction. The first sealing element comprises a first elastic part, the first elastic part surrounds the first opening, the first elastic part is further arranged between the first shell and the second shell along a second direction perpendicular to the first direction, and the first elastic part is connected with the first shell. The first shell and the second shell are in sealing connection in the mode, so that the sealing performance and the assembly efficiency are improved.

Description

Electrochemical device and electric equipment
Technical Field
The application relates to the technical field of energy storage, in particular to an electrochemical device and electric equipment.
Background
The casing of an electrochemical device such as a battery pack is generally composed of a plurality of parts, and the plurality of parts are hermetically connected. In the related art, a plurality of parts of the shell are usually connected by adopting a bolt locking mode with a sealing ring, however, a plurality of bolts are needed in a bolt locking mode, the problem of uniformity of fastening of bolts at different positions is also noted in the locking process, the assembly efficiency is low, and the plurality of screw holes are formed, so that the tightness of the shell is not improved.
Disclosure of Invention
In view of the foregoing, it is desirable to provide an electrochemical device that is advantageous in improving the sealing effect and the assembly efficiency.
Some embodiments in the present application provide an electrochemical device including a battery, a first case, a second case, and a first seal. The first shell is provided with a containing cavity and a first opening communicated with the containing cavity, the containing cavity contains the battery pack, and the first shell is provided with a first protrusion. The second shell is arranged at the first opening, the second shell is provided with a second bulge, the second bulge is arranged on one side of the first bulge along the first direction, and the second bulge is arranged to be propped against the first bulge when the second shell moves relative to the first shell along the direction opposite to the first direction. The first sealing element comprises a first elastic part, the first elastic part is arranged around the first opening, the first elastic part is further arranged between the first shell and the second shell along a second direction perpendicular to the first direction, and the first elastic part is connected with the first shell.
In the above embodiment, the first casing and the second casing realize sealed snap connection through the first protrusion, the second protrusion and the first sealing member, and the process of setting the screw hole and screwing the bolt is omitted, thereby being beneficial to improving the tightness and the assembly efficiency of the electrochemical device.
In some embodiments, the second housing includes a first portion adjacent to the first opening and a second portion remote from the first opening in the first direction, the first resilient portion is disposed between the first housing and the first portion, and the second protrusion is disposed on the second portion.
In the above embodiment, the first elastic portion is disposed between the first housing and the first portion, and the second protrusion is disposed on the second portion, so that a distance between the first elastic portion and the first opening in the first direction is smaller than a distance between the second protrusion and the first opening in the first direction, which is beneficial to making the first elastic portion not interfere with the first protrusion and the second protrusion.
In some embodiments, the first seal further includes a first body portion coupled to the first resilient portion, the first body portion disposed between and sealingly coupled to the first housing and the first portion, the first resilient portion abutting the first housing.
In the above embodiment, the first body portion is connected to the first portion, so that movement of the first seal member is limited, and thus, the risk that the sealing effect is reduced due to movement of the first seal member is reduced.
In some embodiments, the first elastic portion includes a first wall and a second wall arranged in sequence along a first direction, the first wall extends along a second direction, the second wall extends along a direction forming an angle smaller than 90 ° with the first direction, and a distance between the second wall and the second housing in the second direction gradually decreases along the first direction.
In the above embodiment, the second wall disposed in an inclined manner is beneficial to reducing difficulty of the first elastic portion entering between the first housing and the second housing when the second housing is mounted in the first opening along the first direction, and reducing risk of damage of the first elastic portion.
In some embodiments, the first seal further includes a second elastic portion connected to the first body portion, the second elastic portion disposed around the first opening, the first elastic portion and the second elastic portion being sequentially arranged along the first direction. In the second direction, the length of the first elastic part is W up The length of the second elastic part is W dw The distance between the first elastic part and the second elastic part along the first direction is L a Satisfy L a ＞W up And L is a ＞W dw 。
In the above embodiment, the first elastic portion and the second elastic portion may be deformed by the first housing after receiving the force of the first housing and the second housing, and when the condition L is satisfied a ＞W up And L is a ＞W dw And when the first elastic piece and the second elastic piece are deformed and mutually extruded, the risk of the first elastic piece and the second elastic piece interfering and deforming mutually to reduce the risk of the sealing performance reduction is reduced.
In some embodiments, the second elastic portion includes a third wall and a fourth wall arranged in sequence along the first direction, the third wall extending along a direction forming an angle smaller than 90 ° with the first direction, the fourth wall extending along the second direction, and a distance between the third wall and the second housing in the second direction gradually increasing along the first direction.
In the above embodiment, the distance between the third wall and the second housing in the second direction is gradually increased, so that the third wall is obliquely arranged, and the overall oblique direction of the third wall is opposite to that of the second wall, which is beneficial to inhibiting the movement of the first sealing element along the first direction, reducing the risk that the first sealing element is partially or completely separated from between the first housing and the second housing, and improving the sealing performance of the accommodating cavity.
In some embodiments, the first seal further includes a second body portion coupled to the first body portion, the second body portion being located on a side of the first resilient portion facing away from the second resilient portion, the second body portion being coupled to the second housing and coupled to a side of the first housing opposite the first direction.
In the above embodiment, the second main body portion is connected to the first housing in a direction opposite to the first direction, so as to be beneficial to restricting the movement of the first sealing member in the first direction, thereby restricting the movement of the first housing in the opposite direction to the first direction, and further being beneficial to improving the connection stability of the first housing and the second housing.
In some embodiments, the distance between the second body portion and the first elastic portion in the first direction is L b Satisfy L b ＞W up 。
In the above embodiment, the first elastic portion may deform in the direction of the second body portion after receiving the force of the first and second housings, when the condition L is satisfied b ＞W up And when the first elastic piece is deformed, the risk of mutual extrusion of the second main body part and the first elastic piece is reduced, and the risk of tightness caused by interference of the second main body part with the deformation of the first elastic piece is reduced.
In some embodiments, the first protrusion includes a fifth wall and a sixth wall arranged in sequence along a first direction, the fifth wall extending in a direction at an angle less than 90 ° to the first direction, the fifth wall progressively increasing in distance from the first housing in a second direction along the first direction, the sixth wall extending in the second direction.
In the above-mentioned embodiment, the bellied fifth wall slope of first sets up, is favorable to playing the guide effect to the second arch, makes the second casing when installing at first opening along first direction, has reduced the second arch and has passed the first degree of difficulty that the first arch removed to first protruding one side in first direction, is favorable to promoting the convenience of installation, has still reduced the too big and impaired risk of effort of first arch and the mutual extrusion of second.
In some embodiments, the second protrusion includes a seventh wall and an eighth wall arranged in sequence along the first direction, the seventh wall extending along the second direction, the eighth wall extending along a direction at an angle of less than 90 ° to the first direction, the eighth wall being progressively less distant from the second housing along the first direction.
In the above embodiment, the eighth wall and the fifth wall of the second protrusion are disposed obliquely in the same direction, so that the difficulty in moving the second protrusion beyond the first protrusion to one side of the first protrusion in the first direction is further reduced when the second housing is mounted in the first opening in the first direction, which is favorable for improving the convenience of mounting, and the risk of damage caused by excessive force of mutual extrusion of the first protrusion and the second protrusion is also reduced.
In some embodiments, an adhesive substance is disposed between the first protrusion and the second protrusion, the adhesive substance bonding the first protrusion and the second protrusion.
In the above embodiment, the bonding material bonds the first protrusion and the second protrusion, which is favorable to improving the connection stability of the first housing and the second housing, and is favorable to further improving the tightness of the accommodating cavity.
In some embodiments, the first housing is further provided with a third protrusion, the third protrusion being located on one side of the first protrusion in the first direction, the second housing is further provided with a fourth protrusion, the fourth protrusion being located on one side of the second protrusion in the first direction, the fourth protrusion being configured to abut the third protrusion upon movement of the second housing relative to the first housing in a direction opposite to the first direction.
In the above embodiment, the fourth protrusion abuts against the third protrusion when the second housing moves relative to the first housing, thereby further restricting movement of the second housing relative to the first housing in a direction opposite to the first direction.
In some embodiments, the first housing includes a third portion between the first opening and the first projection, a fourth portion between the first projection and the third projection, a fifth portion on a side of the third projection remote from the first projection, and a thickness of the third portion in the second direction, W 1 The thickness of the fourth part is W 2 The thickness of the fifth part is W 3 Satisfy W 1 ＞W 2 ，W 1 ＞W 3 。
In the above embodiment, W is satisfied 1 ＞W 2 And W is 1 ＞W 3 The length of the second bulge along the second direction is facilitated to be increased, the connection area of the second bulge and the first bulge is facilitated to be increased, and the connection stability of the second bulge and the first bulge is further improved.
In some embodiments, the distance between the third portion and the second housing in the second direction is W 4 The length of the second protrusion is W 5 The length of the fourth bulge is W 6 Satisfy W 4 ＜W 5 ，W 4 ＜W 6 。
In the above embodiment, the condition W is satisfied 4 ＜W 5 And W is 4 ＜W 6 The second bulge and the fourth bulge are favorable for exerting interaction force with the third part in the process that the second shell is arranged in the first opening along the first direction, so that the part, provided with the second bulge and the fourth bulge, of the second shell deforms in the direction opposite to the second direction, and the first elastic part is favorable for entering between the first shell and the second shell.
In some embodiments, W is satisfied 2 +W 5 ≤W 1 +W 4 。
In the above embodiment, the condition W is satisfied 2 +W 5 ≤W 1 +W 4 Is beneficial to reducing the action of the fourth part on the second bulgeTo the risk of deformation of the second shell.
In some embodiments, the second protrusion is in contact with the fourth portion and the fourth protrusion is in contact with the fifth portion.
In the above embodiment, the second protrusion contacts with the fourth portion, and the fourth protrusion contacts with the fifth portion, so as to be beneficial to limiting the displacement of the second housing relative to the first housing in the second direction or in the opposite direction to the second direction, thereby improving the stability of the snap connection between the first housing and the second housing.
In some embodiments, the first protrusion, the second protrusion, the third protrusion, the fourth portion, and the fifth portion are each provided with an adhesive substance.
In the above embodiment, the first protrusion, the second protrusion, the third protrusion, the fourth portion and the fifth portion are all provided with the bonding material, which is favorable for bonding the second protrusion with the first protrusion and the fourth portion, and bonding the fourth protrusion with the third protrusion and the fifth portion, thereby being favorable for restricting the displacement of the second housing relative to the first housing and further improving the stability of the snap connection of the first housing and the second housing.
In some embodiments, the fourth portion has a length L in the first direction 1 The thickness of the third bulge is L 2 The length of the fifth part is L 3 The thickness of the second bulge is L 4 The distance between the second protrusion and the fourth protrusion is L 5 The thickness of the fourth bulge is L 6 Satisfy L 4 ≤L 1 ，L 6 ≤L 3 ，L 2 ≤L 5 ，L 1 +L 2 ≤L 4 +L 5 ，L 4 +L 5 +L 6 ≤L 1 +L 2 +L 3 。
In the above embodiment, the condition L is satisfied 4 ≤L 1 ，L 6 ≤L 3 ，L 2 ≤L 5 ，L 1 +L 2 ≤L 4 +L 5 ，L 4 +L 5 +L 6 ≤L 1 +L 2 +L 3 Facilitating the second protrusion to extend between the first protrusion and the third protrusionAnd facilitating the fourth protrusion to be able to move to a side of the third protrusion away from the first protrusion reduces the risk of interference of the first protrusion and the third protrusion with the second protrusion and the fourth protrusion.
In some embodiments, the first case is further provided with a second opening communicating with the receiving chamber, the first case is provided with a fifth protrusion, and the electrochemical device further includes a third case and a second seal. The third shell is arranged at the second opening and positioned at one side of the second shell in the first direction, the third shell is provided with a sixth bulge, the sixth bulge is positioned at one side of the fifth bulge along the direction opposite to the first direction, and the sixth bulge is configured to prop against the fifth bulge when the third shell moves relative to the first shell along the first direction. The second sealing piece comprises a third elastic part, the third elastic part is arranged around the second opening, the third elastic part is arranged between the first shell and the third shell along the second direction, and the third elastic part is connected with the first shell.
In the above embodiment, the first casing and the third casing realize sealed snap connection through the fifth protrusion, the sixth protrusion and the second sealing member, and compared with the connection mode of the bolts, the occupied space of the connecting structure in the accommodating cavity is reduced, and the procedures of setting the screw holes and screwing the bolts are omitted, so that the energy density, the sealing performance and the assembly efficiency of the electrochemical device are improved.
In addition, the application also provides electric equipment beneficial to improving reliability
The embodiment of the application provides electric equipment, which comprises an equipment main body and the electrochemical device in any embodiment, wherein the electrochemical device is arranged on the equipment main body.
In the embodiment, the sealing effect of the electrochemical device is improved, the failure rate and the service life of the electrochemical device are reduced, and the reliability of electric equipment is improved.
An electrochemical device includes a battery, a first housing, a second housing, and a first seal. The second protrusion of the second housing is located on one side of the first protrusion of the first housing in a first direction, and the second protrusion is configured to abut the first protrusion when the second housing moves relative to the first housing in a direction opposite to the first direction. The first elastic part of the first sealing piece is arranged between the first shell and the second shell, and the first elastic part is connected with the first shell. The first bulge, the second bulge and the first sealing piece realize the sealing clamping connection of the first shell and the second shell, and the procedures of setting screw holes and screwing bolts are omitted, so that the sealing performance and the assembly efficiency of the electrochemical device are improved.
Drawings
Fig. 1 is a schematic structural view of an electrochemical device according to an embodiment of the present application.
Fig. 2 is a cross-sectional view of the electrochemical device of fig. 1 along a section line A-A.
Fig. 3 is an enlarged partial schematic view of the portion B in fig. 2.
Fig. 4 is a schematic structural view of the first housing in fig. 1.
Fig. 5 is a partial cross-sectional view of a first housing, a second housing, and a first seal provided in an embodiment of the present application.
Fig. 6 is a partial cross-sectional view of a first housing and a first seal member according to an embodiment of the present application.
Fig. 7 is a partial cross-sectional view of a second housing provided in an embodiment of the present application.
Fig. 8 is a partial cross-sectional view of a first housing, a second housing, and a first seal provided in an embodiment of the present application.
Fig. 9 is a partial cross-sectional view of a first housing, a third housing, and a second seal provided in an embodiment of the present application.
Fig. 10 is an installation diagram of the first, second and third housings according to an embodiment of the present application.
Fig. 11 is a schematic diagram of an electric device according to an embodiment of the present application.
Description of the main reference signs
Electrochemical device 100
Battery pack 10
First housing 20
Accommodation chamber 21
First opening 22
First protrusion 23
Fifth wall 231
Sixth wall 232
Third protrusion 24
Third portion 25
Fourth portion 26
Fifth portion 27
Second opening 28
Fifth projection 29
First side wall 20a
Second side wall 20b
Third side wall 20c
Fourth side wall 20d
Second housing 30
Second protrusion 31
Seventh wall 311
Eighth wall 312
First portion 32
Second portion 33
Fourth protrusion 34
First seal 40
First elastic portion 41
First wall 411
Second wall 412
First body portion 42
Second elastic portion 43
Third wall 431
Fourth wall 432
Second body portion 44
Third housing 50
Sixth bump 51
Second seal 60
Third elastic portion 61
Device body 200
Electric equipment 1000
First direction X
Second direction Y
Third direction Z
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments.
It is noted that when one component is considered to be "connected" to another component, it may be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "rear," and the like are used herein for illustrative purposes only.
The term "vertical" is used to describe an ideal state between two components. In the actual production or use state, there may be an approximately vertical state between the two components. For example, in conjunction with the numerical description, perpendicular may refer to an angle between two straight lines ranging between 90++10°, perpendicular may also refer to a dihedral angle between two planes ranging between 90++10°, and perpendicular may also refer to an angle between a straight line and a plane ranging between 90++10°. The two components described as "perpendicular" may be considered "straight" or "planar" as they are considered "straight" or "planar" in that they are not strictly straight or planar, but may be substantially straight or planar in that they extend in a macroscopic manner.
It should be noted that when a certain parameter is greater than, equal to, or less than a certain endpoint, it should be understood that the endpoint allows a tolerance of ±10%.
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 application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
An electrochemical device includes a battery, a first housing, a second housing, and a first seal. The first shell is provided with a containing cavity and a first opening communicated with the containing cavity, the containing cavity contains the battery pack, and the first shell is provided with a first protrusion. The second shell is arranged at the first opening, the second shell is provided with a second bulge, the second bulge is arranged on one side of the first bulge along the first direction, and the second bulge is arranged to be propped against the first bulge when the second shell moves relative to the first shell along the direction opposite to the first direction. The first sealing element comprises a first elastic part, the first elastic part is arranged around the first opening, the first elastic part is further arranged between the first shell and the second shell along a second direction perpendicular to the first direction, and the first shell and the second shell apply compression deformation force of the first elastic part.
The first shell and the second shell are connected in a sealing clamping way through the first bulge, the second bulge and the first sealing piece, the procedures of setting screw holes and screwing bolts are omitted, and accordingly sealing performance and assembly efficiency of the electrochemical device are improved.
Some embodiments of the present application will be described below with reference to the accompanying drawings. The embodiments described below and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1 to 3, an electrochemical device 100 is provided, and the electrochemical device 100 includes a battery 10, a first case 20, a second case 30, and a first sealing member 40. The first case 20 is provided with a housing chamber 21 and a first opening 22 communicating with the housing chamber 21, the housing chamber 21 housing the battery pack 10. The second housing 30 is disposed in the first opening 22, the first seal 40 includes a first elastic portion 41, the first elastic portion 41 is disposed around the first opening 22, and the first elastic portion 41 is disposed between the first housing 20 and the second housing 30.
In some embodiments, referring to fig. 2, the battery pack 10 includes a plurality of cells (not shown), which may be connected in series or in parallel, and is not particularly limited herein. In some embodiments, the battery may be a type of battery such as a pouch battery, a square-case battery, or a cylindrical battery, to name but a few.
In some embodiments, referring to fig. 3, the first housing 20 is provided with a first protrusion 23, the second housing 30 is provided with a second protrusion 31, the second protrusion 31 is located at one side of the first protrusion 23 along a first direction X, and the second protrusion 31 abuts against the first protrusion 23 when the second housing 30 is configured to move relative to the first housing 20, thereby restricting movement of the second housing 30 relative to the first housing 20 in the opposite direction of the first direction X. Along a second direction Y perpendicular to the first direction X, the first elastic portion 41 is disposed between the first housing 20 and the second housing 30, the first elastic portion 41 is connected to the first housing 20, at least a portion of the first elastic portion 41 is in a compression deformed state, and the first housing 20 and the second housing 30 apply a force of compression deformation of the first elastic portion 41.
It will be appreciated that referring to fig. 4, the first direction X is a mounting direction of the second housing 30 to the first opening 22, the second direction Y is a direction of a center of the first opening 22 toward an edge of the first opening 22, and the second direction Y may be a direction at any angle in a plane perpendicular to the first direction X. After the second housing 30 is mounted in the first opening 22, the first protrusion 23 and the second protrusion 31 abut against each other to restrict movement of the second housing 30 in a direction opposite to the first direction X with respect to the first housing 20, and the first elastic portion 41 enters between the first housing 20 and the second housing 30 and is compressively deformed by the urging force of the first housing 20 and the second housing 30, thereby achieving sealing engagement of the first housing 20 and the second housing 30. The first casing 20 and the second casing 30 of this application realize sealed block connection through first protruding 23, second protruding 31 and first sealing member 40, compare in adopting the mode that the bolt lock attached to connect first casing 20 and second casing 30, saved the setting of screw and the process of screwing the bolt to be favorable to promoting the leakproofness and the packaging efficiency of electrochemical device 100.
In some embodiments, referring to fig. 5, in a first direction X, the second housing 30 includes a first portion 32 adjacent the first opening 22 and a second portion 33 remote from the first opening 22, the first portion 32 being connected to the second portion 33, the boundaries of the first portion 32 and the second portion 33 being indicated in phantom in fig. 5.
In some embodiments, referring to fig. 5, the first elastic portion 41 is disposed between the first housing 20 and the first portion 32, and the second protrusion 31 is disposed on the second portion 33, so that a distance between the first elastic portion 41 and the first opening 22 in the first direction X is smaller than a distance between the second protrusion 31 and the first opening 22 in the first direction X, which is beneficial for preventing the first elastic portion 41 from interfering with the first protrusion 23 and the second protrusion 31.
In some implementations, referring to fig. 5, the second portion 33 and at least a portion of the first portion 32 are positioned within the receiving cavity 21, and the first protrusion 23, the second protrusion 31, and at least a portion of the first resilient portion 41 are positioned within the first receiving cavity 21. Wherein the first elastic portion 41 is disposed around the first opening 22 in the accommodating chamber 21.
In other embodiments, the first portion 32 and the second portion 33 are each located outside the receiving cavity 21, and at least portions of the first protrusion 23, the second protrusion 31, and the first resilient portion 41 are each located outside the first receiving cavity 21. Wherein the first elastic portion 41 is disposed around the first opening 22 outside the accommodating chamber 21.
In some embodiments, referring to fig. 5, the first sealing member 40 further includes a first body portion 42 connected to the first elastic portion 41, where the first body portion 42 is disposed between the first housing 20 and the first portion 32 and is sealingly connected to the first portion 32, and the first elastic portion 41 abuts against the first housing 20, so that the first elastic portion 41 is compressed and deformed. The first body portion 42 is coupled to the first portion 32 to facilitate limiting movement of the first seal 40, thereby facilitating reducing a risk of the first seal 40 moving to reduce a sealing effect.
In some embodiments, the first body 42 and the first portion 32 may be sealed by welding, gluing, or pressing, the first body 42 may be made of non-metal materials such as rubber, silica gel, or plastic, and the first body 42 may be made of metal materials such as aluminum or copper.
In some embodiments, referring to fig. 6, along the first direction X, the first elastic portion 41 includes a first wall 411 and a second wall 412 arranged in sequence, the first wall 411 and the second wall 412 may be directly connected, and other walls may be disposed between the first wall 411 and the second wall 412, which is not limited herein.
It will be appreciated that the first wall 411 and the second wall 412 are walls configured when the first elastic portion 41 is manufactured, and the first wall 411 and the second wall 412 may be deformed when the first elastic portion 41 receives the force applied by the first housing 20 and the second housing 30.
In some embodiments, referring to fig. 6, the first wall 411 extends along the second direction Y, the second wall 412 extends along a direction forming an angle smaller than 90 ° with the first direction X, and the distance between the second wall 412 and the second housing 30 in the second direction Y decreases gradually along the first direction X. The inclined second wall 412 facilitates reducing difficulty of the first elastic portion 41 entering between the first housing 20 and the second housing 30 when the second housing 30 is mounted in the first opening 22 along the first direction X, and reducing risk of damage to the first elastic portion 41.
The second wall 412 extends along a direction having an included angle smaller than 90 ° with the first direction X, which is understood that the whole second wall 412 extends along a direction having an included angle smaller than 90 ° with the first direction X, and the second wall 412 may be a flat wall, a stepped wall, an arc wall, or an irregular other wall.
In some embodiments, the first elastic portion 41 may be made of a material such as silicone, rubber, etc. that is easy to elastically deform, so as to facilitate improving the tightness of the accommodating cavity 21.
In some embodiments, referring to fig. 6, the first sealing member 40 further includes a second elastic portion 43 connected to the first main body 42, the second elastic portion 43 is disposed around the first opening 22, the first elastic portion 41 and the second elastic portion 43 are sequentially arranged along the first direction X, and during the process of installing the second housing 30 into the first opening 22 along the first direction X, the second elastic portion 43 contacts the first housing 20 earlier than the first elastic portion 41. The second elastic portion 43 is compressively deformed by the forces of the first housing 20 and the second housing 30, and the second elastic portion 43 is beneficial to further improving the sealability of the accommodating chamber 21.
In some embodiments, referring to fig. 6, the length of the first elastic portion 41 along the second direction Y is W up The second elastic portion 43 has a length W dw The distance between the first elastic portion 41 and the second elastic portion 43 along the first direction X is L a Satisfy L a ＞W up And L is a ＞W dw . The first elastic portion 41 and the second elastic portion 43 may be deformed by the first casing 20 after receiving the urging force of the first casing 20 and the second casing 30, and when the condition L is satisfied a ＞W up And L is a ＞W dw And when the first elastic piece and the second elastic piece are deformed and mutually extruded, the risk of the first elastic piece and the second elastic piece interfering and deforming mutually to reduce the risk of the sealing performance reduction is reduced.
In some embodiments, the length W of the first resilient portion 41 in the second direction Y up And the length W of the second elastic portion 43 dw The length of the first elastic portion 41 and the second elastic portion 43 in the second direction Y is not subjected to the force of the first housing 20 and the second housing 30.
In other embodiments, the length W of the first resilient portion 41 is along the second direction Y up And the length W of the second elastic portion 43 dw The first elastic portion 41 and the second elastic portion 43 are located at the length of the first housing 20 and the second housing 30 in the second direction Y under the force.
In some embodiments, in a first directionX distance L between the first elastic portion 41 and the second elastic portion 43 a The distance between the first elastic portion 41 and the second elastic portion 43 is not applied by the first housing 20 and the second housing 30.
In other embodiments, the distance L between the first elastic portion 41 and the second elastic portion 43 is along the first direction X a The distance between the first elastic portion 41 and the second elastic portion 43 is set by the force of the first housing 20 and the second housing 30.
In some embodiments, referring to fig. 6, the second elastic portion 43 includes a third wall 431 and a fourth wall 432 sequentially arranged along the first direction X, the third wall 431 and the fourth wall 432 may be directly connected, and other walls may be disposed between the third wall 431 and the fourth wall 432, which is not limited herein.
In some embodiments, referring to fig. 6, the third wall 431 extends along a direction having an included angle smaller than 90 ° with the first direction X, the fourth wall 432 extends along the second direction Y, and the distance between the third wall 431 and the second housing 30 in the second direction Y increases gradually along the first direction X, so that the third wall 431 is obliquely disposed, and the overall oblique direction of the third wall 431 is opposite to the overall oblique direction of the second wall 412, which is beneficial to inhibiting the movement of the first sealing member 40 in the first direction X, and to reducing the risk that the first sealing member 40 is partially or completely separated from between the first housing 20 and the second housing 30, and to improving the sealing performance of the accommodating cavity 21.
In other embodiments, the third wall 431 extends along a direction having an included angle smaller than 90 ° with respect to the first direction X, and the distance between the third wall 431 and the second housing 30 in the second direction Y is gradually reduced along the first direction X, so that the third wall 431 disposed in an inclined manner is beneficial to reducing the difficulty of the second elastic portion 43 entering between the first housing 20 and the second housing 30 when the second housing 30 is mounted in the first opening 22 along the first direction X, and reducing the risk of damaging the second elastic portion 43.
The third wall 431 extends along a direction having an included angle smaller than 90 ° with the first direction X, which is understood to mean that the whole third wall 431 extends along a direction having an included angle smaller than 90 ° with the first direction X, and the third wall 431 may be a flat wall, a stepped wall, an arc wall or an irregular other wall.
In some embodiments, the second elastic portion 43 may be made of a material such as silicone, rubber, etc. that is easy to elastically deform, so as to facilitate improving the tightness of the accommodating cavity 21.
In some embodiments, referring to fig. 6, the first sealing member 40 further includes a second body portion 44 connected to the first body portion 42, the second body portion 44 is located on a side of the first elastic portion 41 facing away from the second elastic portion 43, and the second body portion 44 is connected to the second housing 30 and is connected to a side of the first housing 20 opposite to the first direction X. The second body 44 is connected to the first housing 20 in a direction opposite to the first direction X, so as to limit the movement of the first seal 40 in the first direction X, thereby limiting the movement of the first housing 20 in the direction opposite to the first direction X, and further improving the connection stability of the first housing 20 and the second housing 30.
In some embodiments, referring to fig. 6, the distance between the second body portion 44 and the first elastic portion 41 along the first direction X is L b Satisfy L b ＞W up . When the first elastic portion 41 receives the urging force of the first casing 20 and the second casing 30, the first elastic portion may deform in the direction of the second body portion 44, and the condition L is satisfied b ＞W up In this case, the risk of the second body portion 44 and the first elastic member being pressed against each other is advantageously reduced, so that the risk of the second body portion 44 interfering with the deformation of the first elastic portion 41 to reduce the tightness is reduced.
In some embodiments, the distance L between the second body portion 44 and the first elastic portion 41 is taken b In this case, the first elastic portion 41 may be in a state of not receiving the force of the first casing 20 and the second casing 30, or may be in a state of receiving the force of the first casing 20 and the second casing 30.
In some embodiments, referring to fig. 7, the first protrusion 23 includes a fifth wall 231 and a sixth wall 232 arranged in sequence along the first direction X, where the fifth wall 231 and the sixth wall 232 may be directly connected, and other walls may be disposed between the fifth wall 231 and the sixth wall 232, which is not limited herein.
In some embodiments, referring to fig. 5 and 7, the fifth wall 231 extends along a direction having an included angle smaller than 90 ° with respect to the first direction X, and the distance between the fifth wall 231 and the first housing 20 in the second direction Y increases gradually along the first direction X, and the sixth wall 232 extends along the second direction Y. The fifth wall 231 of the first protrusion 23 is obliquely arranged, so that the second protrusion 31 can be guided, the difficulty that the second protrusion 31 moves to one side of the first protrusion 23 in the first direction X beyond the first protrusion 23 when the second housing 30 is installed in the first opening 22 in the first direction X is reduced, the convenience of installation is improved, and the risk that the acting force of mutual extrusion of the first protrusion 23 and the second protrusion 31 is overlarge and damaged is reduced.
In some embodiments, referring to fig. 6, the second protrusion 31 includes a seventh wall 311 and an eighth wall 312 sequentially arranged along the first direction X, where the seventh wall 311 and the eighth wall 312 may be directly connected, and other walls may be disposed between the seventh wall 311 and the eighth wall 312, which is not limited herein.
In some embodiments, referring to fig. 5 and 6, the seventh wall 311 extends along the second direction Y, the eighth wall 312 extends along a direction forming an angle smaller than 90 ° with the first direction X, and the distance between the eighth wall 312 and the second housing 30 in the second direction Y decreases gradually along the first direction X. The eighth wall 312 and the fifth wall 231 of the second protrusion 31 are obliquely arranged along the same direction, so that when the second housing 30 is installed in the first opening 22 along the first direction X, the difficulty that the second protrusion 31 moves to one side of the first protrusion 23 in the first direction X beyond the first protrusion 23 is further reduced, the convenience of installation is improved, and the risk that the acting force of mutual extrusion of the first protrusion 23 and the second protrusion 31 is too large to damage is reduced.
In some embodiments, referring to fig. 5 and 7, along the first direction X, the first housing 20 includes a third portion 25 between the first opening 22 and the first protrusion 23 and a fourth portion 26 on a side of the first protrusion 23 away from the first opening 22. In the second direction Y, the third portion 25 has a thickness W 1 The fourth portion 26 has a thickness W 2 Satisfy W 1 ＞W 2 Is beneficial to lifting the length of the second protrusion 31 along the second direction YDegree.
In some embodiments, the second protrusion 31 may be disposed in direct contact with the fourth portion 26 or may be spaced apart from the fourth portion 26, if W is satisfied 1 ＞W 2 On the basis of the above, in the process of installing the second housing 30 in the first opening 22 along the first direction X, the second protrusion 31 will first abut against the third portion 25 and receive the force of the third portion 25, so that the portion of the second housing 30 provided with the second protrusion 31 deforms in the direction opposite to the second direction Y until the second protrusion 31 passes over the first protrusion 23 along the first direction X, and the second protrusion 31 is no longer subject to the force to drive the second housing 30 to deform.
It will be appreciated that during the mounting of the second housing 30 in the first direction X to the first opening 22, the portion of the second housing 30 provided with the second protrusion 31 deforms in a direction opposite to the second direction Y, facilitating the first elastic portion 41 to enter between the first housing 20 and the second housing 30.
In some embodiments, referring to fig. 5 and 7, the second protrusion 31 contacts the fourth portion 26, so as to limit the displacement of the second housing 30 relative to the first housing 20 in the second direction Y or opposite to the second direction Y, thereby improving the stability of the snap connection between the first housing 20 and the second housing 30.
In some embodiments, referring to fig. 5 and 7, an adhesive (not shown) is disposed between the first protrusion 23 and the second protrusion 31, and the adhesive adheres the first protrusion 23 and the second protrusion 31, which is beneficial to improving the connection stability of the first housing 20 and the second housing 30 and further improving the sealing performance of the accommodating cavity 21.
In some embodiments, the bonding substance may be a glue such as a structural adhesive, or may be a tape with two sides having adhesive properties, which is not limited herein.
In some embodiments, referring to fig. 5-7, the first housing 20 is further provided with a third protrusion 24, the third protrusion 24 being located on one side of the first protrusion 23 along the first direction X, the second housing 30 is further provided with a fourth protrusion 34, the fourth protrusion 34 being located on one side of the second protrusion 31 along the first direction X, the fourth protrusion 34 being configured to abut the third protrusion 24 upon movement of the second housing 30 relative to the first housing 20 in a direction opposite to the first direction X, thereby further limiting movement of the second housing 30 relative to the first housing 20 in a direction opposite to the first direction X.
It will be appreciated that, after the second housing 30 is mounted in the first opening 22 along the first direction X, the third protrusion 24 and the fourth protrusion 34 can improve the effect of restricting the movement of the second housing 30 relative to the first housing 20 in the opposite direction of the first direction X, which is beneficial to improving the fastening stability of the first housing 20 and the second housing 30.
In other embodiments, the first housing 20 and the second housing 30 may further be provided with protrusions for engagement, which are not particularly limited herein.
In some embodiments, referring to fig. 5, the first housing 20 further includes a fifth portion 27 located on a side of the third protrusion 24 away from the first protrusion 23 along the first direction X, and the fifth portion 27 has a thickness W along the second direction Y 3 Satisfy W 1 ＞W 2 And W is 1 ＞W 3 The length of the second protrusion 31 and the fourth protrusion 34 along the second direction Y is facilitated to be increased, the area of the connection between the second protrusion 31 and the first protrusion 23 is facilitated to be increased, and the connection stability between the second protrusion 31 and the first protrusion 23 is further improved.
In some embodiments, the second protrusion 31 may be disposed in contact with the fourth portion 26 or may be spaced apart from the fourth portion 26, and the fourth protrusion 34 may be disposed in contact with the fifth portion 27 or may be spaced apart from the fifth portion 27, if W is satisfied 1 ＞W 2 And W is 1 ＞W 3 On the basis of the above, in the process of installing the second housing 30 in the first opening 22 along the first direction X, the second protrusion 31 and the fourth protrusion 34 will firstly abut against the third portion 25 and receive the force of the third portion 25, so that the portion of the second housing 30 provided with the second protrusion 31 and the portion provided with the fourth protrusion 34 deforms in the direction opposite to the second direction Y until the second protrusion 31 passes over the first protrusion 23 along the first direction X and the fourth protrusion 34 passes over the third protrusion 24 along the first direction X, and then the second protrusion 31 and the fourth protrusion 34 are no longer subject to the force to drive the second housing 30 to deform.
It will be appreciated that during the mounting of the second housing 30 in the first direction X to the first opening 22, the portion of the second housing 30 provided with the second protrusion 31 and the portion provided with the fourth protrusion 34 deform in a direction opposite to the second direction Y, facilitating the first elastic portion 41 to enter between the first housing 20 and the second housing 30.
In some embodiments, referring to fig. 5, the fourth protrusion 34 contacts the fifth portion 27, so as to limit the displacement of the second housing 30 relative to the first housing 20 in the second direction Y or opposite to the second direction Y, thereby improving the stability of the snap connection between the first housing 20 and the second housing 30.
In some embodiments, referring to fig. 5, the distance between the third portion 25 and the second housing 30 along the second direction Y is W 4 The second protrusion 31 has a length W 5 Satisfy W 4 ＜W 5 The second protrusion 31 is advantageous to apply an interaction force with the third portion 25 during the process of mounting the second housing 30 in the first opening 22 along the first direction X, so that the portion of the second housing 30 provided with the second protrusion 31 deforms in a direction opposite to the second direction Y, and the first elastic portion 41 is facilitated to enter between the first housing 20 and the second housing 30.
In some embodiments, referring to FIG. 5, the length of the fourth protrusion 34 along the second direction Y is W 6 Satisfy W 4 ＜W 5 And W is 4 ＜W 6 The second protrusion 31 and the fourth protrusion 34 are advantageously made to exert an interaction force with the third portion 25 during the mounting of the second housing 30 in the first direction X in the first opening 22, so that the portion of the second housing 30 provided with the second protrusion 31 and the portion provided with the fourth protrusion 34 are deformed in a direction opposite to the second direction Y, facilitating the first elastic portion 41 to enter between the first housing 20 and the second housing 30.
In some embodiments, referring to FIG. 5, W is satisfied 2 +W 5 ≤W 1 +W 4 It is advantageous to reduce the risk of the fourth portion 26 exerting a deformation on the second projection 31 that acts on the second housing 30.
In some embodiments, the first protrusion 23, the second protrusion 31, the third protrusion 24, the fourth protrusion 34, the fourth portion 26, and the fifth portion 27 are provided with an adhesive material, which is favorable for bonding the second protrusion 31 with the first protrusion 23 and the fourth portion 26, and is favorable for bonding the fourth protrusion 34 with the third protrusion 24 and the fifth portion 27, so as to be favorable for limiting displacement of the second housing 30 relative to the first housing 20, and further improving the stability of the snap connection between the first housing 20 and the second housing 30.
In some embodiments, the bonding substance may be a glue such as a structural adhesive, or may be a tape with two sides having adhesive properties, which is not limited herein.
In some embodiments, referring to FIG. 8, the fourth portion 26 has a length L along the first direction X 1 The thickness of the third protrusion 24 is L 2 The length of the fifth portion 27 is L 3 The thickness of the second protrusion 31 is L 4 The distance between the second protrusion 31 and the fourth protrusion 34 is L 5 The fourth protrusion 34 has a thickness L 6 Satisfy L 4 ≤L 1 ，L 6 ≤L 3 ，L 2 ≤L 5 ，L 1 +L 2 ≤L 4 +L 5 ，L 4 +L 5 +L 6 ≤L 1 +L 2 +L 3 Advantageously, the second projection 31 is allowed to extend between the first projection 23 and the third projection 24, and the fourth projection 34 is allowed to move to a side of the third projection 24 away from the first projection 23, reducing the risk of the first projection 23 and the third projection 24 interfering with the second projection 31 and the fourth projection 34.
In some embodiments, the first housing 20 and the second housing 30 may be made of metal materials such as aluminum or copper, or non-metal materials such as plastic, and the materials of the first housing 20 and the second housing 30 may be the same or different. As an illustrative example, the first housing 20 is an aluminum housing and the second housing 30 is a plastic housing.
In some embodiments, referring to fig. 9, the first case 20 is further provided with a second opening 28 communicating with the receiving chamber 21, the first case 20 is provided with a fifth protrusion 29, and the electrochemical device 100 further includes a third case 50 and a second seal 60. The third housing 50 is provided at the second opening 28 and is located at one side of the second housing 30 in the first direction X, the third housing 50 is provided with a sixth protrusion 51, the sixth protrusion 51 is located at one side of the fifth protrusion 29 in a direction opposite to the first direction X, and the sixth protrusion 51 is configured to abut against the fifth protrusion 29 when the third housing 50 moves relative to the first housing 20 in the first direction X. The second seal 60 includes a third elastic portion 61, the third elastic portion 61 being disposed around the second opening 28, the third elastic portion 61 being disposed between the first housing 20 and the third housing 50 in the second direction Y, the third elastic portion 61 being connected to the first housing. At least part of the third elastic portion 61 is in a compression deformed state, and the first housing 20 and the third housing 50 apply a force of compression deformation of the third elastic portion 61.
It will be appreciated that, after the third housing 50 is mounted in the first opening 22, the fifth protrusion 29 and the sixth protrusion 51 abut against each other to limit movement of the third housing 50 in the first direction X relative to the first housing 20, and the first elastic portion 41 enters between the first housing 20 and the third housing 50 and is compressively deformed by the force of the first housing 20 and the third housing 50, thereby achieving sealing engagement of the first housing 20 and the third housing 50. Compare in adopting the bolt to wear to establish first casing 20, second casing 30 and third casing 50 in proper order to with the scheme that first casing 20, second casing 30 and third casing 50 are connected, the first casing 20 of this application and third casing 50 realize sealed block through fifth arch 29, sixth arch 51 and second sealing member 60 and connect, reduced connection structure at the occupation space who holds chamber 21, still saved the setting of screw and the process of screwing the bolt, thereby be favorable to promoting electrochemical device 100's energy density and leakproofness and packaging efficiency.
In some embodiments, referring to fig. 10, the first housing 20 includes a first side wall 20a, a second side wall 20b, a third side wall 20c and a fourth side wall 20d connected in sequence, the first side wall 20a and the third side wall 20c are disposed opposite to each other along a second direction Y, the second side wall 20b and the fourth side wall 20d are disposed opposite to each other along a third direction Z, and the third direction Z is perpendicular to the first direction X and the second direction Y. The first, second, third and fourth side walls 20a, 20b, 20c and 20d enclose a receiving chamber 21, one side of the first, second, third and fourth side walls 20a, 20b, 20c and 20d along the first direction X forms a first opening 22 communicating with the receiving chamber 21, and one side of the first, second, third and fourth side walls 20a, 20b, 20c and 20d along the first direction X facing away from the first opening 22 forms a second opening 28 communicating with the receiving chamber 21.
In some embodiments, referring to fig. 9, the fifth protrusion 29 and the sixth protrusion 51 and at least a portion of the third elastic portion 61 are located outside the accommodating cavity 21, and the third elastic portion 61 is disposed around the second opening 28 outside the accommodating cavity 21.
In other embodiments, the fifth and sixth protrusions 29 and 51 and at least a portion of the third resilient portion 61 are each located within the receiving cavity 21, the third resilient portion 61 being disposed within the receiving cavity 21 around the second opening 28.
In some embodiments, the engaging between the first housing 20 and the third housing 50 may refer to any one of the engaging embodiments of the first housing 20 and the second housing 30, which will not be described herein.
In some embodiments, the sealing manner of the second seal 60 between the first housing 20 and the third housing 50 may refer to any implementation of sealing between the first seal 40 and the first housing 20 and the second housing 30, which will not be described in detail herein.
In some embodiments, the method of assembling the electrochemical device 100 includes the steps of:
the connecting step comprises: the first seal 40 is connected with the second housing 30.
Gluing: the surface of the first housing 20 on the side where the first protrusion 23 is provided is coated with an adhesive.
And (3) shell closing: the second housing 30 is mounted to the first opening 22 in the first direction X until the second protrusion 31 passes over the first protrusion 23 in the first direction and is located at one side of the first protrusion 23 in the first direction X, and the first elastic portion 41 is interposed between the first housing 20 and the second housing 30.
In some embodiments, the first seal member 40 and the second housing 30 may be connected by adhesion, welding, or pressing.
Referring to fig. 11, an embodiment of the present application further provides an electrical device 1000, where the electrical device 1000 includes an apparatus main body 200 and the electrochemical device 100 in any of the embodiments described above, the electrochemical device 100 is mounted on the apparatus main body 200, so that a sealing effect of the electrochemical device 100 is improved, which is beneficial to reducing a failure rate and a service life of the electrochemical device 100, and further is beneficial to improving reliability of the electrical device 1000.
Since the present electrical device 1000 includes the technical scheme related to any embodiment of the electrochemical device 100, the present electrical device at least has the beneficial effects brought by the technical scheme related to any embodiment of the electrochemical device 100, and will not be described in detail herein.
The electric device 1000 may be an unmanned aerial vehicle, an electric two-wheeled vehicle, a cleaning robot, an energy storage device, an electric tool, or the like.
In addition, those of ordinary skill in the art will recognize that the above embodiments are presented for purposes of illustration only and are not intended to be limiting, and that appropriate modifications and variations of the above embodiments are within the scope of the disclosure of the present application.

Claims (20)

1. An electrochemical device, comprising:
a battery pack;
the first shell is provided with a containing cavity and a first opening communicated with the containing cavity, the containing cavity contains the battery pack, and the first shell is provided with a first bulge;
the second shell is arranged at the first opening and provided with a second bulge, the second bulge is positioned on one side of the first bulge along a first direction, and the second bulge is arranged to prop against the first bulge when the second shell moves relative to the first shell along a direction opposite to the first direction;
the first sealing piece comprises a first elastic part, the first elastic part is arranged around the first opening, the first elastic part is further arranged between the first shell and the second shell along a second direction perpendicular to the first direction, and the first elastic part is connected with the first shell.
2. The electrochemical device of claim 1, wherein in the first direction, the second housing includes a first portion adjacent the first opening and a second portion remote from the first opening, the first resilient portion is disposed between the first housing and the first portion, and the second protrusion is disposed on the second portion.
3. The electrochemical device of claim 2, wherein the first seal further comprises a first body portion coupled to the first resilient portion, the first body portion disposed between and sealingly coupled to the first housing and the first portion, the first resilient portion abutting the first housing.
4. The electrochemical device of claim 3, wherein the first elastic portion includes a first wall and a second wall arranged in this order along the first direction, the first wall extending along the second direction, the second wall extending along a direction that forms an angle of less than 90 ° with the first direction, and a distance between the second wall and the second case in the second direction gradually decreases along the first direction.
5. The electrochemical device of claim 3, wherein the first seal further comprises a second elastic portion connected to the first body portion, the second elastic portion disposed around the first opening, the first elastic portion and the second elastic portion being sequentially arranged along the first direction;
the length of the first elastic part is W along the second direction up The length of the second elastic part is W dw The distance between the first elastic part and the second elastic part along the first direction is L a Satisfy L a ＞W up And L is a ＞W dw 。
6. The electrochemical device of claim 5, wherein the second elastic portion includes a third wall and a fourth wall arranged in this order along the first direction, the third wall extending in a direction at an angle of less than 90 ° to the first direction, the fourth wall extending in the second direction, and a distance between the third wall and the second case in the second direction gradually increasing along the first direction.
7. The electrochemical device of claim 5, wherein the first seal further comprises a second body portion connected to the first body portion, the second body portion being located on a side of the first elastic portion facing away from the second elastic portion, the second body portion being connected to the second housing and to a side of the first housing opposite the first direction.
8. The electrochemical device according to claim 7, wherein a distance between the second main body portion and the first elastic portion in the first direction is L b Satisfy L b ＞W up 。
9. The electrochemical device of claim 1, wherein the first protrusion includes a fifth wall and a sixth wall arranged in sequence along the first direction, the fifth wall extending in a direction at an angle of less than 90 ° to the first direction, the fifth wall being progressively greater in distance from the first housing in the second direction along the first direction, the sixth wall extending in the second direction.
10. The electrochemical device of claim 9, wherein the second protrusion includes a seventh wall and an eighth wall arranged in sequence along the first direction, the seventh wall extending along the second direction, the eighth wall extending along a direction that forms an angle of less than 90 ° with the first direction, and a distance between the eighth wall and the second case in the second direction gradually decreases along the first direction.
11. The electrochemical device according to claim 1, wherein an adhesive substance is provided between the first protrusion and the second protrusion, the adhesive substance adhering the first protrusion and the second protrusion.
12. The electrochemical device of claim 1, wherein the first housing is further provided with a third protrusion, the third protrusion being located on one side of the first protrusion in the first direction, the second housing is further provided with a fourth protrusion, the fourth protrusion being located on one side of the second protrusion in the first direction, the fourth protrusion being configured to abut the third protrusion when the second housing moves relative to the first housing in a direction opposite to the first direction.
13. The electrochemical device of claim 12, wherein in the first direction, the first housing comprises a third portion between the first opening and the first protrusion, a fourth portion between the first protrusion and the third protrusion, a fifth portion on a side of the third protrusion remote from the first protrusion, and in the second direction, the third portion has a thickness W 1 The thickness of the fourth part is W 2 The thickness of the fifth part is W 3 Satisfy W 1 ＞W 2 ，W 1 ＞W 3 。
14. The electrochemical device of claim 13, wherein a distance between the third portion and the second housing in the second direction is W 4 The length of the second bulge is W 5 The length of the fourth bulge is W 6 Satisfy W 4 ＜W 5 ，W 4 ＜W 6 。
15. The electrochemical device of claim 14, wherein W is satisfied in the second direction 2 +W 5 ≤W 1 +W 4 。
16. The electrochemical device of claim 13, wherein the second protrusion is in contact with the fourth portion and the fourth protrusion is in contact with the fifth portion.
17. The electrochemical device of claim 13, wherein the first protrusion, the second protrusion, the third protrusion, the fourth portion, and the fifth portion are each provided with an adhesive substance.
18. The electrochemical device of claim 13, wherein in the first direction, the fourth portion length is L 1 The thickness of the third bulge is L 2 The length of the fifth part is L 3 The thickness of the second bulge is L 4 The distance between the second protrusion and the fourth protrusion is L 5 The thickness of the fourth bulge is L 6 Satisfy L 4 ≤L 1 ，L 6 ≤L 3 ，L 2 ≤L 5 ，L 1 +L 2 ≤L 4 +L 5 ，L 4 +L 5 +L 6 ≤L 1 +L 2 +L 3 。
19. The electrochemical device according to claim 1, wherein the first case is further provided with a second opening communicating with the accommodation chamber, the first case is provided with a fifth protrusion, the electrochemical device further comprising:
a third housing provided at the second opening and located at one side of the second housing in the first direction, the third housing being provided with a sixth protrusion located at one side of the fifth protrusion in a direction opposite to the first direction, the sixth protrusion being configured to abut against the fifth protrusion in the first direction when the third housing moves relative to the first housing;
the second sealing piece comprises a third elastic part, the third elastic part is arranged around the second opening, the third elastic part is arranged between the first shell and the third shell along the second direction, and the third elastic part is connected with the first shell.
20. An electric device comprising an apparatus main body and the electrochemical device according to any one of claims 1 to 19, the electrochemical device being mounted to the apparatus main body.
CN202310341672.8A 2023-03-31 2023-03-31 Electrochemical device and electric equipment Pending CN116345049A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310341672.8A CN116345049A (en) 2023-03-31 2023-03-31 Electrochemical device and electric equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310341672.8A CN116345049A (en) 2023-03-31 2023-03-31 Electrochemical device and electric equipment

Publications (1)

Publication Number Publication Date
CN116345049A true CN116345049A (en) 2023-06-27

Family

ID=86891132

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN116345049A (en)

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