CN115548542B - Battery end cover assembly, battery pack and electric equipment - Google Patents
Battery end cover assembly, battery pack and electric equipment Download PDFInfo
- Publication number
- CN115548542B CN115548542B CN202211399261.6A CN202211399261A CN115548542B CN 115548542 B CN115548542 B CN 115548542B CN 202211399261 A CN202211399261 A CN 202211399261A CN 115548542 B CN115548542 B CN 115548542B
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- battery
- liquid injection
- groove
- piece
- injection hole
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- 239000007788 liquid Substances 0.000 claims abstract description 109
- 238000007789 sealing Methods 0.000 claims abstract description 109
- 238000002347 injection Methods 0.000 claims abstract description 102
- 239000007924 injection Substances 0.000 claims abstract description 102
- 230000007306 turnover Effects 0.000 claims abstract description 46
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 239000013589 supplement Substances 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 description 20
- 230000000694 effects Effects 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
-
- 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)
- Filling, Topping-Up Batteries (AREA)
Abstract
The application discloses a battery end cover assembly, battery package and consumer relates to battery packaging technical field. The battery end cap assembly includes: cover plate, upset piece, sealing washer and installed part. The cover plate is provided with a liquid injection hole and a first connecting part, and one end, close to the outside of the battery, of the inner wall of the liquid injection hole is provided with a first groove. The turnover piece is provided with a second groove along the periphery. The sealing ring has elasticity. The mounting member has a second connecting portion. The overturning piece is matched with the liquid injection hole, the sealing ring is sleeved on the second groove, and when liquid injection is not needed, the overturning piece seals and closes the liquid injection hole; when liquid is required to be injected, external force is applied to the edge of the turnover part, so that the turnover part turns over, and the liquid injection hole is opened. The first connecting portion is connected with the second connecting portion, so that the mounting piece is connected to the cover plate and covers one end, close to the outside of the battery, of the overturning piece. By adopting the design, the sealing structure of the battery end cover can be disassembled, and secondary supplement liquid injection can be realized by pressing.
Description
Technical Field
The application relates to the technical field of battery packaging, in particular to a battery end cover assembly, a battery pack and electric equipment.
Background
The battery generally needs to ensure enough electrolyte to normally work, and the electrolyte injection port is generally arranged on the battery end cover, electrolyte can be injected into the battery through the electrolyte injection port, the electrolyte injection port is sealed by adopting a sealing piece after the electrolyte injection is completed, the electrolyte injection port can be sealed by utilizing laser welding, and the phenomenon of liquid leakage in the use process of the battery is avoided.
In service life of the battery, repeated charging and discharging processes can lead to electrolyte loss, so that service performance of the battery is reduced, and the electrolyte in the battery needs to be replenished to ensure normal continuous operation of the battery. In the prior art, most of the electrolyte is injected and then the liquid injection hole is welded, so that the seal is not detachable, the electrolyte cannot be timely supplemented, and the service life and the utilization rate of the battery are affected.
Disclosure of Invention
One of the primary objects of the present application is to overcome at least one of the above-mentioned drawbacks of the prior art, and to provide a battery end cap assembly and a battery with a detachable sealing structure, which are convenient for realizing secondary injection of a battery.
In order to achieve the above purpose, the present application adopts the following technical scheme:
according to one aspect of the present application, a battery end cap assembly is provided that includes a cover plate, a flip member, a seal ring, and a mounting member. The cover plate is provided with a liquid injection hole and a first connecting part, and a first groove is formed in one end, close to the outside of the battery, of the inner wall of the liquid injection hole. The flip has a second groove along the periphery. The sealing ring has elasticity. The mounting member has a second connecting portion. The overturning piece is matched with the liquid injection hole, the sealing ring is sleeved on the second groove, and when liquid injection is not needed, the overturning piece seals and closes the liquid injection hole; when liquid injection is needed, an external force is applied to the edge of the turnover piece, so that the turnover piece turns over, and the liquid injection hole is opened. The first connecting part is connected with the second connecting part, so that the mounting piece is connected with the cover plate and covers one end, close to the outside of the battery, of the turnover piece.
The battery end cover assembly provided by the application is sleeved on the turnover piece through the sealing ring, and is integrally arranged in the first groove of the cover plate liquid injection hole, so that liquid injection can be realized only by opening the liquid injection hole after the turnover piece is pressed and turned when liquid is required to be injected into the battery. When the sealing is needed, the overturning piece and the sealing ring are in sealing fit with the first groove of the liquid injection hole, and the installation piece covers the overturning piece. The battery can be sealed without welding, and the sealing is detachable, so that secondary liquid injection of the battery is facilitated. Particularly, when the price of the electrolyte fluctuates, the method can be used for carrying out secondary injection on the battery with the battery end cover assembly when the price of the electrolyte is relatively low so as to supplement the electrolyte, thereby reducing the use cost of the battery as a whole.
According to one embodiment of the application, the cover plate comprises a body and a boss arranged on the body and close to the outside of the battery, the liquid injection hole penetrates through the body and the boss, and the first connecting portion is arranged on the periphery of the boss.
In this application, through set up the boss on the apron body, can provide certain connection support for the connection of installed part to the setting of boss can make the installation operation more convenient.
According to one embodiment of the present application, the mounting member has a cavity near one end of the interior of the battery, the second connecting portion is disposed on the inner wall of the cavity, and the cavity accommodates the boss.
In this application, set up the cavity in the position that the installed part faces the boss and can hold the boss to can realize can mutually supporting between the inner wall of cavity and the outer wall of boss and connect, be favorable to the installed part to be fixed in the apron steadily firmly, the reinforcing is to the guard action of upset piece.
According to one embodiment of the present application, the battery end cap assembly further includes a gasket that is sleeved on the boss and is located between the mounting member and the body of the cover plate.
In this application, set up the gasket between the body of apron and installed part, can realize being connected between installed part and the apron inseparabler, play better sealed effect.
According to one embodiment of the application, the mounting part compresses the gasket to realize sealing connection with the cover plate, and the compression ratio of the gasket is 25% -40%.
In this application, the degree of sealing between the mounting member and the cover plate can be controlled by controlling the compression rate of the gasket. And the gasket is not easy to damage, the service life of the battery end cover assembly can be prolonged and the cost can be reduced on the premise of ensuring good sealing performance.
According to one embodiment of the present application, the height H1 of the boss, the thickness W1 of the compressed gasket, and the depth S1 of the cavity satisfy: S1+W1 is more than or equal to H1.
In this application, the thickness after the gasket compression and the degree of depth sum of cavity are greater than or equal to the height of boss, can realize that the installed part can not be interfered the hindrance by the boss when installing, further guarantee the sealed effect between installed part and the apron.
According to one embodiment of the application, the cover plate further comprises a sinking table hole, the sinking table hole is communicated with one side, close to the outside of the battery, of the liquid injection hole, and the first connecting portion is arranged on the side wall of the sinking table hole.
In this application, set up the heavy bench hole of being connected with annotating the liquid hole at the apron, first connecting portion set up in the lateral wall of heavy bench hole, can realize that the installed part is connected in the apron through first connecting portion to need not set up the boss at the apron, can save installation space, and save the material of apron.
According to one embodiment of the present application, the battery end cap assembly further comprises a spacer block disposed within the counter bore and between the mounting member and the bottom wall of the counter bore.
In this application, set up the cushion between the diapire in mounting and counter bore, can realize the sealing connection of mounting and apron.
According to one embodiment of the present application, the diameter of the pad is larger than the diameter of the liquid injection hole and smaller than the diameter of the sinking platform hole.
In this application, the cushion diameter is greater than the diameter of annotating the liquid hole, can realize that the cushion covers on sealed upset piece of annotating the liquid hole, can play the effect of protection upset piece to can also realize the seal between cushion and the upset piece.
According to one embodiment of the application, the mounting part compresses the cushion block to realize sealing connection with the cover plate, and the compression ratio of the cushion block is 25% -40%.
In this application, the degree of sealing between flip and cover can be controlled by controlling the compressibility of the spacer. And the cushion block is not easy to damage, the service life of the battery end cover assembly can be prolonged and the cost can be reduced on the premise of ensuring good sealing performance.
According to one embodiment of the present application, the flip member has a radially extending shaft, and the flip member is connected to the first recess of the liquid injection hole through the shaft.
In this application, set up the back shaft at the both ends of the diametric direction of upset piece for connect the inside of annotating the liquid hole, can realize that upset piece set up more steadily firmly on annotating the liquid hole, and can realize that upset piece upset in-process is stable safe.
According to one embodiment of the present application, the first groove is provided with an arc inner wall in the radial direction of the liquid injection hole, and is sleeved behind the second groove, and the outer diameter of the sealing ring is larger than the diameters of two ends of the arc inner wall and smaller than the maximum diameter of the arc inner wall.
In this application, be the arc inner wall with first recess design, resistance is less when can making the upset piece upset to the arc inner wall also can realize good sealed effect, after the second recess of upset piece is located to the sealing washer snare, the external diameter of sealing washer is greater than the diameter of two tip of arc inner wall is less than when the maximum diameter of arc inner wall, can realize sealing washer and upset piece and keep the first recess at annotating the liquid hole, the force of applying the upset piece when the upset can not make the upset piece fall into annotate the liquid hole, and can realize better sealing.
According to one embodiment of the present application, the first groove is in interference fit with the sealing ring, and the interference of the first groove and the sealing ring is 0.15-0.25mm.
In the application, the first groove is in interference fit with the sealing ring, and the interference is 0.15-0.25mm, so that the sealing between the first groove and the sealing ring can be realized, and the leakage of electrolyte is prevented; and the sealing is not too tight, and the disassembly is difficult.
According to one embodiment of the present application, the second groove has a linear outer wall in a radial direction of the flip, and a diameter of the linear outer wall is larger than an inner diameter of the seal ring.
In this application, set up the rectangular channel with the second recess, have the linear type outer wall in the radial direction of upset piece, can make the cooperation of upset piece and sealing washer inseparabler, can make the sealing washer firmly block establish in the second recess of upset piece when the upset piece.
According to one embodiment of the present application, the second groove is in interference fit with the sealing ring, and the interference of the second groove and the sealing ring is 0.3-0.45mm.
In this application, set up the interference of second recess and sealing washer and be 0.3-0.45mm, can realize that the sealing washer tight fit is in the upset piece, the sealing washer firmly blocks and establishes in the second recess of upset piece when the upset piece to can not be influenced by the effort between sealing washer and the first recess of annotating the liquid hole.
According to one embodiment of the application, one end of the mounting piece, which is close to the outside of the battery, is provided with a cross groove, a straight groove or a polygonal groove.
In this application, set up cross groove, straight word groove, circular slot or polygonal slot at the mounting to outside one end, can be convenient for anchor clamps snatch, rotate the mounting.
According to another aspect of the present application, there is provided a battery including a housing, a cell assembly disposed in the housing, and a battery end cap assembly connected to the housing, the battery end cap assembly including the battery end cap assembly described above.
According to a third aspect of the present application, there is provided a battery pack comprising a battery pack, wherein the battery pack comprises the above-described battery.
According to a fourth aspect of the present application, there is provided a powered device, including the battery pack described above.
The battery that this application provided adopts above battery end cover subassembly, can realize sealed dismantlement, has realized simple to operate, sealing performance is good, prevents battery weeping when can being convenient for annotate the secondary of battery.
According to the technical scheme, the battery end cover assembly provided by the application has the advantages that:
the battery end cover assembly comprises a cover plate, a turnover piece, a sealing ring and a mounting piece. The cover plate is provided with a liquid injection hole and a first connecting part, and a first groove is formed in one end, close to the outside of the battery, of the inner wall of the liquid injection hole. The flip has a second groove along the periphery. The sealing ring has elasticity. The mounting member has a second connecting portion. The overturning piece is matched with the liquid injection hole, the sealing ring is sleeved on the second groove of the overturning piece, the overturning piece and the sealing ring are integrally matched with the first groove of the liquid injection hole, the overturning piece is sleeved on the sealing ring, and the overturning piece is integrally arranged in the first groove of the liquid injection hole of the cover plate, so that when the battery is required to be injected, the liquid injection hole can be opened after the overturning piece is pressed and overturned. When the sealing is needed, the overturning piece and the sealing ring are in sealing fit with the first groove of the liquid injection hole. The overturning piece seals and closes the liquid injection hole; when liquid injection is needed, an external force is applied to the edge of the turnover piece, so that the turnover piece turns over, and the liquid injection hole is opened. The first connecting part is connected with the second connecting part, so that the mounting piece is connected with the cover plate and covers one end, close to the outside of the battery, of the turnover piece. The mounting piece can be connected to the cover plate through the first connecting part and the second connecting part which are mutually connected and matched, and the cover is provided with the protection overturning piece. The battery end cover assembly of the application realizes that welding is not needed for sealing, sealing is detachable, and the opening of the liquid injection hole can be realized by pressing, so that secondary liquid injection of the battery is convenient, and the operation is simple and convenient.
The battery that this application provided, including the casing, set up in the casing the electric core subassembly and connect in the battery end cover subassembly of casing, battery end cover subassembly includes foretell battery end cover subassembly, easy and simple to handle when the secondary annotates the liquid to can not cause the destruction to seal structure, still can keep good sealed effect after annotating the liquid.
Drawings
Various objects, features and advantages of the present application will become more apparent from the following detailed description of the preferred embodiments of the application, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the present application and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:
fig. 1 is a schematic structural view of a battery end cap assembly of the present application.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a top view of the assembled battery end cap assembly of fig. 2.
Fig. 4 is a cross-sectional view A-A of fig. 3.
Fig. 5 is a front view of the cover plate of fig. 1.
Fig. 6 is a B-B cross-sectional view of fig. 5.
Fig. 7 is a front view of the seal ring of fig. 1.
Fig. 8 is a C-C cross-sectional view of fig. 7.
Fig. 9 is a front view of the mount of fig. 1.
Fig. 10 is a D-D sectional view of fig. 9.
Fig. 11 is a front view of the flip in fig. 1.
Fig. 12 is a top view of fig. 11.
Fig. 13 is a front view of the gasket of fig. 1.
Fig. 14 is an E-E sectional view of fig. 13.
Fig. 15 is a schematic view of the structure of the battery shown in fig. 1 after the battery end cap assembly has been installed.
Fig. 16 is a schematic structural view of a second embodiment of a battery end cap assembly of the present application.
Fig. 17 is a front view of fig. 16.
Fig. 18 is a top view of the assembled battery end cap assembly of fig. 17.
Fig. 19 is a cross-sectional view of F-F of fig. 18.
Fig. 20 is a front view of the cover plate of fig. 16.
Fig. 21 is a G-G cross-sectional view of fig. 20.
FIG. 22 is a front view of the mount of FIG. 16
Fig. 23 is a P-P cross-sectional view of fig. 22.
Fig. 24 is a schematic view of the assembled battery of the battery end cap assembly of fig. 16.
The reference numerals are explained as follows:
10. a battery end cap assembly;
11. a cover plate;
111. a liquid injection hole;
112. a first connection portion;
113. a first groove;
1131. an arc-shaped inner wall;
114. a body;
115. a boss;
116. sinking platform holes;
12. a turnover piece;
121. a second groove;
13. a seal ring;
131. a first elastic member;
132. a second elastic member;
14. a mounting member;
141. a second connecting portion;
142. a cavity;
143. a cross groove;
15. a gasket;
16. a cushion block;
20. a housing;
30. a cell assembly;
100. a battery;
w1, thickness of the gasket after compression;
s1, depth of a cavity;
H1. the height of the boss;
d1. the inner diameter of the sealing ring;
d2. the outer diameter of the sealing ring;
D1. maximum diameter of the arc-shaped inner wall;
D2. diameter of the straight outer wall.
Detailed Description
Exemplary embodiments that exhibit the features and advantages of the present application are described in detail in the following description. It will be understood that the present application is capable of various modifications in the various embodiments, none of which depart from the scope of the present application, and that the description and drawings are intended to be illustrative in nature and not to be limiting of the present application.
In the following description of various exemplary embodiments of the present application, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the present application may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present application. When introducing elements/components/etc. that are described and/or illustrated herein, the terms "first," "second," and "third," etc. are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc.
As shown in fig. 1 to 14, the battery end cap assembly 10 of the present application includes a cap plate 11, a turnover member 12, a seal ring 13, and a mounting member 14. The cover plate 11 has a liquid injection hole 111 and a first connection portion 112, and a first groove 113 is provided at one end of the inner wall of the liquid injection hole 111 near the outside of the battery. The flip 12 has a second groove 121 along the outer circumference. The seal ring 13 has elasticity. The mounting member 14 has a second connecting portion 141. The overturning piece 12 is matched with the liquid injection hole 111, the sealing ring 13 is sleeved on the second groove 121, and when liquid injection is not needed, the overturning piece 12 seals the liquid injection hole 111; when the liquid injection is required, an external force is applied to the edge of the turning piece 12 to turn the turning piece 12 over, and the liquid injection hole 111 is opened. The first connection part 112 is connected with the second connection part 141 such that the mounting member 14 is connected to the cap plate 11 and covers one end of the flip member 12 near the outside of the battery.
The battery end cover assembly provided by the application is sleeved on the turnover piece through the sealing ring, and is integrally arranged in the first groove of the cover plate liquid injection hole, so that liquid injection can be realized only by opening the liquid injection hole after the turnover piece is pressed and turned when liquid is required to be injected into the battery. When the sealing is needed, the overturning piece and the sealing ring are in sealing fit with the first groove of the liquid injection hole, and the installation piece covers the overturning piece. The battery can be sealed without welding, and the sealing is detachable, so that secondary liquid injection of the battery is facilitated.
The first connection portion and the second connection portion may be screw-connected or may be snap-connected, so long as the mounting member is connected to the cover plate.
In this embodiment, the cover 11 includes a body 114 and a boss 115 disposed on the body 114 and close to the outside of the battery, the liquid injection hole 111 penetrates the body 114 and the boss 115, and the first connection portion 112 is disposed on the outer periphery of the boss 115. Set up the boss on the apron body, can provide certain connection support for the connection of installed part to the setting of boss can make the installation operation more convenient.
In this embodiment, the mounting member 14 has a cavity 142 at one end near the inside of the battery, the second connecting portion 141 is disposed on the inner wall of the cavity 142, and the cavity 142 accommodates the boss 115. The mounting piece is arranged at the position facing the boss, the boss can be accommodated in the cavity, and the inner wall of the cavity and the outer wall of the boss can be mutually matched and connected, so that the mounting piece is favorably and stably fixed on the cover plate.
In this embodiment, the battery end cap assembly 10 further includes a gasket 15, and the gasket 15 is sleeved on the boss 115 and located between the mounting member 14 and the body 114 of the cover plate 11. Set up the gasket between the body of apron and installed part, can realize between installed part and the apron can be connected inseparabler, play better sealed effect.
In this embodiment, the mounting member 14 compresses the gasket 15 to achieve a sealed connection with the cover plate 11, the compression ratio of the gasket 15 being 25% -40%. The degree of sealing between the mounting member and the cover plate can be controlled by controlling the compression ratio of the gasket. The gasket is not easy to damage on the premise of ensuring good sealing performance.
In this embodiment, the height H1 of the boss, the compressed thickness W1 of the gasket, and the depth S1 of the cavity satisfy: S1+W1 is more than or equal to H1. The sum of the thickness of the compressed gasket and the depth of the cavity is larger than or equal to the height of the boss, so that the mounting piece can be mounted without interference and obstruction by the boss, and the sealing effect between the mounting piece and the cover plate is further ensured.
As shown in fig. 15, the present application further provides a battery 100, where the battery 100 includes a housing 20, a battery cell assembly 30 disposed in the housing 20, and a battery end cap assembly 10 connected to the housing 20, the housing 20 has an accommodating cavity and an opening communicating with the accommodating cavity and an external space, the battery cell assembly 30 is disposed in the accommodating cavity and fixedly connected to the bottom of the housing 20, the battery end cap assembly 10 is fixedly connected to the housing 20 and seals the opening of the housing 20, and the battery end cap assembly 10 is further connected to the battery cell assembly 30.
The battery end cover assembly 10 is, as in the above embodiments, combined with the battery end cover assembly 10, and the seal is detachable, so that the battery 100 can be conveniently replenished with electrolyte, and the secondary use of the battery 100 can be conveniently realized.
In other embodiments, as shown in fig. 16 to 23, the cover plate 11 includes a counter hole 116, the counter hole 116 is disposed on a side of the liquid injection hole 111 near the outside of the battery, and the first connection portion 112 is disposed on a side wall of the counter hole 116. The cover plate is provided with the sinking platform hole connected with the liquid injection hole, the first connecting part is arranged on the side wall of the sinking platform hole, the mounting piece can be connected to the cover plate through the first connecting part, a boss is not required to be arranged on the cover plate, the mounting space can be saved, and the material of the cover plate is saved.
In this embodiment, the battery end cap assembly 10 further includes a spacer 16, the spacer 16 being disposed within the counter bore 116 and between the mounting member 14 and the bottom wall of the counter bore 116. The setting of cushion can realize the sealing connection of installed part and apron.
In this embodiment, the diameter of the spacer 16 is larger than the diameter of the liquid injection hole 111 and smaller than the diameter of the counter hole 116. The cushion block can be covered on the turnover piece for sealing the liquid injection hole, the function of protecting the turnover piece can be achieved, and sealing between the cushion block and the turnover piece can be achieved.
In this embodiment, the mounting member 14 compresses the spacer 16 to achieve a sealed connection with the cover plate 11, the spacer 16 having a compression ratio of 25% -40%. Under the condition that the cushion block is not easy to damage, the sealing degree between the overturning piece and the cover plate can be controlled by controlling the compression ratio of the cushion block, the service life of the battery end cover assembly is prolonged, and the cost is reduced.
In other embodiments, flip member 12 has a radially extending shaft, and flip member 12 is coupled to first recess 113 of fill port 111 via the shaft. The overturning piece is arranged on the liquid injection hole through the shaft which extends radially, so that the overturning piece can be more stable during overturning, the whole structure is firmer, and the use is reliable.
In the above-described embodiment, referring to fig. 6 and 8, the first groove 113 has an arc-shaped inner wall 1131 in the radial direction of the injection hole 111, and the outer diameter D2 of the sealing ring 13 sleeved on the second groove 121 is larger than the diameter of the two ends of the arc-shaped inner wall 1131 and smaller than the maximum diameter D1 of the arc-shaped inner wall 1131. The first groove is designed to be the arc inner wall, so that the resistance is small when the turnover piece is turned over, the arc inner wall can also achieve good sealing effect, the outer diameter of the sealing ring, which is arranged behind the second groove, is larger than the diameters of the two ends of the arc inner wall and smaller than the maximum diameter of the arc inner wall, and the turnover of the turnover piece can be stable and the sealing is better.
In the above embodiment, the first groove 113 is in interference fit with the sealing ring 13, and the interference of the first groove 113 with the sealing ring 13 is 0.15-0.25mm. The interference fit means that extrusion can be generated between the first groove and the sealing ring, so that the sealing ring is compressed, and the interference magnitude means the compressed size of the sealing ring after being installed. The first groove is in interference fit with the sealing ring, and the interference is 0.15-0.25mm, so that the sealing between the first groove and the sealing ring can be realized, and the electrolyte is prevented from leaking; and the sealing is not too tight, and the disassembly is difficult. The interference may be 0.18mm, 0.2mm, 0.22mm, etc.
In the above-described embodiment, referring to fig. 8 and 11, the second groove 121 has a linear outer wall having a diameter D2 larger than the inner diameter D1 of the seal ring 13 in the radial direction of the flip 12. The second groove is arranged into a rectangular groove, the radial direction of the turnover piece is provided with a linear outer wall, so that the turnover piece and the sealing ring are matched more tightly, and the sealing ring can be firmly clamped in the second groove of the turnover piece when the turnover piece is turned.
In the above embodiment, the second groove 121 is in interference fit with the sealing ring 13, and the interference of the second groove 121 with the sealing ring 13 is 0.3-0.45mm. The interference magnitude between the second groove and the sealing ring is 0.3-0.45mm, so that the sealing ring is tightly matched with the overturning piece, and the sealing ring is firmly clamped in the second groove of the overturning piece when the overturning piece is overturned and cannot be influenced by acting force between the sealing ring and the first groove of the liquid injection hole. The interference may be 0.33mm, 0.38mm, 0.42mm, etc.
In the above-described embodiment, the mount 14 is provided with a cross groove, a straight groove, or a polygonal groove at one end near the outside of the battery. The clamp is convenient to grasp and rotate the mounting piece.
In the above embodiment, the seal ring may be made of rubber, so that it is possible to avoid metal scraps generated by friction between the seal ring and the wall of the metal injection hole, and thus avoid the metal scraps falling into the electrolyte to cause short circuit. The pad 15 and the spacer 16 may also be made of rubber, and further may be made of silica gel.
As shown in fig. 24, the present application further provides a battery 100, where the battery 100 includes a housing 20, a battery cell assembly 30 disposed in the housing 20, and a battery end cap assembly 10 connected to the housing 20, the housing 20 has a receiving cavity and an opening communicating with the receiving cavity and an external space, the battery cell assembly 30 is disposed in the receiving cavity and fixedly connected to the bottom of the housing 20, the battery end cap assembly 10 is fixedly connected to the housing 20 and seals the opening of the housing 20, and the battery end cap assembly 10 is further connected to the battery cell assembly 30.
The battery end cover assembly 10 is, as in the above embodiments, combined with the battery end cover assembly 10, and the seal is detachable, so that the battery 100 can be conveniently replenished with electrolyte, and the secondary use of the battery 100 can be conveniently realized.
The present application also provides a battery pack comprising a battery pack, wherein the battery pack comprises the battery shown in fig. 10.
The application also provides electric equipment, and the battery pack is adopted. The electric equipment may take various forms, such as cellular phones, portable devices, notebook computers, battery cars, ships, spacecrafts, electric toys and electric tools, etc., for example, spacecrafts including airplanes, rockets, space planes and spacecraft, etc., electric toys including fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys and electric plane toys, etc., electric tools including metal cutting electric tools, grinding electric tools, fitting electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planners.
It should be noted herein that the cell end cap assemblies shown in the drawings and described in this specification are only a few examples of the wide variety of cell end cap assemblies that can employ the principles of the present application. It should be clearly understood that the principles of the present application are in no way limited to any of the details or any of the components of the cell end cap assembly shown in the drawings or described in this specification.
The foregoing is a detailed description of several exemplary embodiments of the battery end cap assembly of the present application, and the process of using the battery end cap assembly of the present application will be described in detail below.
Referring to fig. 1 to 15, the application of the battery end cover assembly provided in the present application is: the sealing ring is arranged in the second groove of the turnover part, then the battery is integrally arranged in the first groove of the liquid injection hole, and the battery is in a state of no liquid injection, and the turnover part and the sealing ring integrally seal the liquid injection hole. And then the gasket is sleeved outside the boss of the cover plate, the first connecting part (internal thread) of the mounting piece is connected to the first connecting part (external thread) of the cover plate, and the compression rate of the gasket can be adjusted by the mounting piece through threaded connection.
When the secondary liquid injection is needed, the mounting piece is taken down, then the external force is applied to the edge of the overturning piece to press, the overturning piece overturns, the liquid injection hole is opened, and the secondary liquid injection can be carried out on the battery.
Referring to fig. 16 to 24, the use process of the battery end cover assembly proposed in the present application is: the sealing ring is arranged in the second groove of the turnover part, then the battery is integrally arranged in the first groove of the liquid injection hole, and the battery is in a state of no liquid injection, and the turnover part and the sealing ring integrally seal the liquid injection hole. And then the cushion block is arranged in the sinking platform hole of the cover plate to cover the overturning piece, and then the first connecting part (external threads) of the mounting piece is connected to the first connecting part (internal threads) of the cover plate, and the compression rate of the mounting piece to the cushion block can be adjusted through threaded connection.
When secondary liquid injection is needed, the mounting part and the cushion block are sequentially taken down, then external force is applied to the edge of the overturning part to press, the overturning part overturns, the liquid injection hole is opened, and secondary liquid injection can be carried out on the battery.
Through the use of the battery end cover assembly of this application, can obtain the battery end cover assembly of this application, through setting up installed part and upset piece, can make the sealed dismantlement of battery end cover, sealed effectual and can realize the secondary annotating liquid of battery.
To sum up, the battery end cover assembly that this application provided, including apron, upset piece, sealing washer and installed part. The cover plate is provided with a liquid injection hole and a first connecting part, and a first groove is formed in one end, close to the outside of the battery, of the inner wall of the liquid injection hole. The turnover piece is provided with a second groove along the periphery. The sealing ring has elasticity. The mounting member has a second connecting portion. The sealing ring is sleeved on the second groove of the turnover piece, the turnover piece is matched with the first groove of the liquid injection hole through the sealing ring, the turnover piece is sleeved on the sealing ring, and the turnover piece is integrally arranged in the first groove of the liquid injection hole of the cover plate, so that liquid injection can be realized only by pressing the turnover piece to turn over and then opening the liquid injection hole when liquid injection is needed to the battery. When the sealing is needed, the overturning piece and the sealing ring are in sealing fit with the first groove of the liquid injection hole. The overturning piece seals and closes the liquid injection hole; when liquid is required to be injected, external force is applied to the edge of the turnover part, so that the turnover part turns over, and the liquid injection hole is opened. The first connecting portion is connected with the second connecting portion, so that the mounting piece is connected to the cover plate and covers one end, close to the outside of the battery, of the overturning piece. The mounting piece can be connected to the cover plate through the first connecting part and the second connecting part which are mutually connected and matched, and the cover is provided with the protection overturning piece. The battery end cover assembly of the application realizes sealing and disassembly, and can realize opening of the liquid injection hole by pressing, so that secondary liquid injection of the battery is facilitated.
The battery that this application provided, including foretell battery end cover subassembly, sealed effect is good, can supply electrolyte, realizes the secondary use of battery to easy and simple to handle, need not destroy battery end cover subassembly.
Exemplary embodiments of the battery end cap assembly and battery presented herein are described and/or illustrated in detail above. Embodiments of the present application are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or each step of one embodiment may also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. that are described and/or illustrated herein, the terms "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc.
The embodiments of the present application are not limited to the specific embodiments described herein, but rather, components of each embodiment may be utilized independently and separately from other components described herein. Each component of one embodiment may also be used in combination with other components of other embodiments. In the description of the application embodiments, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the application embodiments and simplifying the description, and do not indicate or imply that the devices or units to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the application embodiments.
In the description of the present specification, the terms "one embodiment," "some embodiments," "other embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an application embodiment. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the examples, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in the embodiments can be understood by those of ordinary skill in the art according to the specific circumstances.
The above is only a preferred embodiment of the application embodiment, and is not intended to limit the application embodiment, and various modifications and changes may be made to the application embodiment by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the application should be included in the protection scope of the embodiments of the application.
Claims (16)
1. A battery end cap assembly, characterized by: comprising the following steps:
the cover plate is provided with a liquid injection hole and a first connecting part, and a first groove is formed in one end, close to the outside of the battery, of the inner wall of the liquid injection hole;
the turnover piece is provided with a second groove along the periphery;
the sealing ring has elasticity;
a mounting member having a second connection portion;
the overturning piece is matched with the liquid injection hole, the sealing ring is sleeved on the second groove, and when liquid injection is not needed, the overturning piece seals and closes the liquid injection hole; when liquid injection is needed, an external force is applied to the edge of the turnover piece to enable the turnover piece to turn over, and the liquid injection hole is opened;
the first connecting part is connected with the second connecting part, so that the mounting piece is connected with the cover plate and covers one end, close to the outside of the battery, of the turnover piece;
the turnover piece is provided with a shaft extending along the radial direction, and is connected with the first groove of the liquid injection hole through the shaft;
the first groove is provided with an arc-shaped inner wall in the radial direction of the liquid injection hole, and is sleeved on the second groove, and the outer diameter of the sealing ring is larger than the diameter of two end parts of the arc-shaped inner wall and smaller than the maximum diameter of the arc-shaped inner wall;
the second groove is provided with a linear outer wall in the radial direction of the turnover piece, and the diameter of the linear outer wall is larger than the inner diameter of the sealing ring.
2. The battery end cap assembly of claim 1, wherein: the cover plate comprises a body and a boss arranged on the body and close to the outside of the battery, the liquid injection hole penetrates through the body and the boss, and the first connecting part is arranged on the periphery of the boss.
3. The battery end cap assembly of claim 2, wherein: the mounting piece is close to one end of the inside of battery has the cavity, second connecting portion set up in the inner wall of cavity, the cavity holds the boss.
4. The battery end cap assembly of claim 3, wherein: the battery end cover assembly further comprises a gasket which is sleeved on the boss and located between the mounting piece and the body of the cover plate.
5. The battery end cap assembly of claim 4, wherein: the mounting piece compresses the gasket to realize sealing connection with the cover plate, and the compression ratio of the gasket is 25% -40%.
6. The battery end cap assembly of claim 5, wherein: the height H1 of the boss, the thickness W1 of the gasket after compression and the depth S1 of the cavity satisfy the following conditions: S1+W1 is more than or equal to H1.
7. The battery end cap assembly of claim 1, wherein: the cover plate further comprises a sinking table hole, the sinking table hole is communicated with one side, close to the outside of the battery, of the liquid injection hole, and the first connecting portion is arranged on the side wall of the sinking table hole.
8. The battery end cap assembly of claim 7, wherein: the battery end cover assembly further comprises a cushion block which is arranged in the sinking platform hole and is positioned between the mounting piece and the bottom wall of the sinking platform hole.
9. The battery end cap assembly of claim 8, wherein: the diameter of the cushion block is larger than that of the liquid injection hole and smaller than that of the sinking table hole.
10. The battery end cap assembly of claim 8, wherein: the installation piece compresses the cushion block to realize sealing connection with the cover plate, and the compression ratio of the cushion block is 25% -40%.
11. The battery end cap assembly of any one of claims 1-10, wherein: the first groove is in interference fit with the sealing ring, and the interference of the first groove and the sealing ring is 0.15-0.25mm.
12. The battery end cap assembly of any one of claims 1-10, wherein: the second groove is in interference fit with the sealing ring, and the interference of the second groove and the sealing ring is 0.3-0.45mm.
13. The battery end cap assembly of any one of claims 1-10, wherein the mounting member is provided with a cross groove, a straight groove, a circular groove, or a polygonal groove at an end thereof adjacent to the outside of the battery.
14. A battery comprising a housing, a cell assembly disposed within the housing, and a battery end cap assembly connected to the housing, wherein the battery end cap assembly comprises the battery end cap assembly of any one of claims 1-10.
15. A battery pack comprising a battery pack, wherein the battery pack comprises the battery of claim 14.
16. A powered device comprising the battery pack of claim 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211399261.6A CN115548542B (en) | 2022-11-09 | 2022-11-09 | Battery end cover assembly, battery pack and electric equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211399261.6A CN115548542B (en) | 2022-11-09 | 2022-11-09 | Battery end cover assembly, battery pack and electric equipment |
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| CN115548542A CN115548542A (en) | 2022-12-30 |
| CN115548542B true CN115548542B (en) | 2024-02-06 |
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| CN115548542A (en) | 2022-12-30 |
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