CN208315621U - Cap assembly, battery and the battery modules of battery - Google Patents
Cap assembly, battery and the battery modules of battery Download PDFInfo
- Publication number
- CN208315621U CN208315621U CN201820913723.4U CN201820913723U CN208315621U CN 208315621 U CN208315621 U CN 208315621U CN 201820913723 U CN201820913723 U CN 201820913723U CN 208315621 U CN208315621 U CN 208315621U
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- Prior art keywords
- pole
- connecting part
- battery
- coping plate
- conducting connecting
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- 230000010485 coping Effects 0.000 claims abstract description 72
- 238000007789 sealing Methods 0.000 claims description 17
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 10
- 238000004146 energy storage Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
This application involves energy storage device technical fields, more particularly to a kind of cap assembly of battery, battery and battery modules, cap assembly includes coping plate and pole, the top surface of the coping plate is provided with conducting connecting part holding tank, so that the top surface of conducting connecting part is not higher than the top surface of the coping plate, the pole mounting hole through coping plate is provided in the conducting connecting part holding tank；The pole is arranged in the pole mounting hole, and on the thickness direction of the coping plate, the top surface of the pole is lower than the top surface of the coping plate.Cap assembly provided herein, the top surface of coping plate is provided with conducting connecting part holding tank, so that the top surface of conducting connecting part is not higher than the top surface of coping plate, the space outside conducting connecting part occupancy coping plate can be reduced, the top surface of pole is lower than the top surface of coping plate, the space outside pole occupancy battery cap piece can be saved, to dramatically improve the energy density of battery modules.
Description
Technical field
This application involves energy storage device technical field more particularly to a kind of cap assemblies of battery, battery and battery modules.
Background technique
Because of the rapid development of new-energy automobile industry, new-energy automobile gradually replaces fuel-engined vehicle, has obtained increasingly wider
General application.Each automobile production manufacturer is dedicated to improving battery modules to improve the course continuation mileage and security performance of automobile
Energy density.Chemical system relative maturity at present hardly results in very big promotion in a short time, therefore carries out structure to battery and set
Meter optimization, to mitigate its weight, save its occupied space, and then the energy density for improving battery modules becomes head instantly
Select scheme.
Battery modules generally comprise multiple batteries, and the cap assembly of each battery mainly includes coping plate and is sealedly connected on top
Pole on cover plate, in the prior art, pole protrude from the top surface of coping plate.It is welded when adjacent cell connects by laser penetration
Mode conductive connecting piece and pole are attached, throat thickness require be not less than 3mm, cause battery volume big, energy is close
It spends relatively low.In addition, the error as present in the difference in height and assembling process of battery, easily causes conductive connecting piece and pole to exist
Gap causes rosin joint to influence the performance of battery modules, and does over again if necessary, then causes production efficiency low.
Utility model content
This application provides a kind of cap assembly of battery, battery and battery modules, close with the energy for increasing battery modules
Degree.
The first aspect of the application provides a kind of cap assembly of battery comprising:
Coping plate, the top surface of the coping plate are provided with conducting connecting part holding tank, so that the top surface of conducting connecting part is not
Higher than the top surface of the coping plate, the pole mounting hole through coping plate is provided in the conducting connecting part holding tank；
Pole is arranged in the pole mounting hole, and on the thickness direction of the coping plate, the top surface of the pole is low
In the top surface of the coping plate.
Optionally, the conducting connecting part holding tank runs through the coping plate along the width direction of the coping plate.
Optionally, the top of the pole mounting hole includes first edge and second edge, the first edge and described
Second edge is opposite along the width direction of the coping plate, and at least one of the first edge and the second edge are equipped with
Conducting connecting part avoids face.
Optionally, the top of the pole is square platy structure, the top of the pole mounting hole be with it is described rectangular
The rectangular hole section that plate structure matches.
Optionally, the middle part of the pole is the first oval shell of column, and the pole mounting hole includes oval hole section, described ellipse
Oval sealing ring is equipped in circular hole portion, the top and bottom of the ellipse sealing ring contact the bottom of the square platy structure respectively
Face and the bottom surface of the oval hole section are to form sealing cooperation.
The second aspect of the application provides a kind of battery comprising any of the above-described cap assembly.
Optionally, the bottom of the pole is the second oval shell of column, and the lower section of the coping plate is equipped with tab connection sheet, institute
It states tab connection sheet and is equipped with the elliptical hole matched with the described second oval shell of column, the bottom surface of the described second oval shell of column is not
Bottom surface beyond the tab connection sheet.
The third aspect of the application provides a kind of battery modules comprising:
Multiple batteries, the battery use any one of the above battery；
Conducting connecting part is connected by conducting connecting part between multiple batteries, and the conducting connecting part is arranged in institute
It states in conducting connecting part holding tank, the top surface of the conducting connecting part is not higher than the top surface of the coping plate.
Optionally, the conducting connecting part is banded structure, and the both ends of the conducting connecting part are connected to corresponding described
The top surface of the pole of battery.
Optionally, the top surface of the pole of the two neighboring battery passes through a plurality of conducting connecting part connection.
Technical solution provided by the present application can achieve it is following the utility model has the advantages that
Cap assembly provided herein, the top surface of coping plate are provided with conducting connecting part holding tank, so that conductive connect
The top surface of fitting is not higher than the top surface of coping plate, can reduce the space outside conducting connecting part occupancy coping plate, be conductively connected
Pole mounting hole is set in part holding tank, and the top surface for the pole being arranged in pole mounting hole is lower than the top surface of coping plate, i.e. pole
It is sunken to top cover, the space outside pole occupancy battery cap piece can be saved, to dramatically improve battery modules
Energy density.
Further, in battery modules provided herein, pass through the conductive connection of banded structure between the pole of battery
Part is attached, and with biggish flexibility, has better adaptability to error existing for cell height and assembling process,
Connection is reliable.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of battery modules provided by the embodiments of the present application；
Fig. 2 is the schematic top plan view of battery modules shown in Fig. 1；
Fig. 3 is the A-A cross-sectional view of battery modules shown in Fig. 2；
Fig. 4 is the partial enlarged view of Fig. 3；
Fig. 5 is that section when cap assembly provided by the embodiments of the present application is in connection status with tab connection sheet is illustrated
Figure；
Fig. 6 is the perspective view of the explosion of cap assembly provided by the embodiments of the present application.
Appended drawing reference:
1- battery；
11- cap assembly；
111- pole；
1111- square platy structure；
The oval shell of column of 1112- first；
The oval shell of column of 1113- second；
112- ellipse sealing ring；
113- coping plate；
1131- conducting connecting part holding tank；
1132- explosion-proof valve installing port；
1133- pole mounting hole；
1133a- conducting connecting part avoids face；
The rectangular hole section of 1133b-；
1133c- ellipse hole section；
12- tab connection sheet；
2- conducting connecting part.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and together with specification it is used to explain the principle of the application.
Specific embodiment
The application is described in further detail below by specific embodiment and in conjunction with attached drawing.It should be noted that
It is that the nouns of locality such as "upper", "lower" described in the embodiment of the present application, "left", "right" are retouched with angle shown in the drawings
It states, should not be construed as the restriction to the embodiment of the present application.In addition, within a context, it is also necessary to understanding, when mentioning one
Element be connected to another element "upper" perhaps "lower" when its can not only be connected directly between another element "upper" or
"lower" can also be indirectly coupled to another element "upper" or "lower" by intermediary element.
As shown in figs 1 to 6, the embodiment of the present application provides a kind of battery modules comprising: multiple batteries 1, multiple batteries 1
Between series, parallel or series-parallel connection between battery 1, the conductive connection realized by the conducting connecting part 2 of banded structure
The both ends of part 2 are connected to the top surface of the pole 111 of corresponding battery 1, and conducting connecting part 2 can be using copper strips, aluminium strip etc.
Metal tape, and by the connection of the techniques such as ultrasonic bond, laser bonding, it can also be using non-metallics such as graphite, and pass through bonding
Etc. techniques realize connection.Battery 1 includes cap assembly 11 and battery case, and the top of battery case is arranged in cap assembly 11,
To form accommodation space with battery case, electrode assembly is equipped in accommodation space.
Can define length direction, width direction and the short transverse of battery modules respectively with the Y direction in attached drawing 1, X
Axis direction and Z-direction are corresponding.
The cap assembly 11 includes coping plate 113 and pole 111, and coping plate 113 can be strip structure, coping plate
113 top surface is equipped with conducting connecting part holding tank 1131, and conducting connecting part 2 is set in the conducting connecting part holding tank 1131,
And the top surface of conducting connecting part 2 is not higher than the top surface of coping plate 113, one side conducting connecting part 2 will not occupy outside coping plate 113
The space in portion, to reduce the exterior space that conducting connecting part 2 occupies coping plate 113,113 pairs of conductions of another aspect coping plate are even
Fitting 2 plays a protective role, and guarantees the reliability of connection；It is provided in conducting connecting part holding tank 1131 along coping plate 113
Thickness direction (i.e. above-mentioned short transverse) perforative pole mounting hole 1133, pole 111 are arranged in the pole mounting hole 1133
And be tightly connected between coping plate 113, on the thickness direction of coping plate 113, (i.e. pole 111 is separate for the top surface of pole 111
Electrode assembly) lower than coping plate 113 top surface (i.e. coping plate 113 far from electrode assembly while), i.e. pole 111 is heavy
In coping plate 113, one side pole 111 itself is not take up the space outside coping plate 113, on the other hand on the top of pole 111
Existing difference in height can be used for arranging conducting connecting part 2 between face and the top surface of coping plate 113, to reduce the body of battery 1
Product, and then reduce the volume of battery modules, improve the energy density of battery modules.
Further, the top surface of the pole 111 of two neighboring battery 1 is connected by a plurality of conducting connecting part 2, to improve two
The reliability that a battery 1 connects, it is to be understood that the top surface of the pole 111 of two neighboring battery 1 can also be led by one
Electrical connector 2 connects.
Specifically, projection of the pole mounting hole 1133 on coping plate 113 is located at conducting connecting part holding tank 1131 and is pushing up
In the edge of projection on cover plate 113, so that when connecting two adjacent batteries 1, conducting connecting part 2 can hold completely
It is contained in conducting connecting part holding tank 1131, to reduce the volume of battery 1, and then reduces the volume of battery modules, improve electricity
The energy density of Chi Mo group.
Specifically, pole 111 is sunken to coping plate 113 and can use between pole 111 and the top surface of coping plate 113 without overlap joint
The connection type of structure；It can also be connected using overlapping mode, such as pole mounting hole 1133 is set as stepped hole shape, pole
111 are set as the ladder shaft-like matched with pole mounting hole 1133, and the uppermost of pole 111 is contained in pole mounting hole 1133
Uppermost space in, and the length of the uppermost of pole 111 be less than pole mounting hole 1133 uppermost depth, as long as
Top surface of the top surface of pole 111 without departing from coping plate 113.
Specifically, the quantity of pole mounting hole 1133 is two, and the length direction along coping plate 113 is distributed, coping plate 113
Explosion-proof valve installing port 1132 is equipped between two pole mounting holes 1133.
Preferably, above-mentioned conducting connecting part holding tank 1131 runs through coping plate 113 along the width direction of coping plate 113,
In the entire width direction of coping plate 113, the space outside the occupancy coping plate 113 of conducting connecting part 2 can be further decreased.
Optionally, above-mentioned conducting connecting part holding tank 1131 can also be not through top cover along the width direction of coping plate 113
Piece 113, i.e. conducting connecting part holding tank 1131 at least one side wall in the width direction of coping plate 113, and the side wall position
Within coping plate 113.
Further, the top of the slot bottom of conducting connecting part holding tank 1131 and pole 111 maintains an equal level or slightly above pole 111
Top, to play a protective role to pole 111, conducting connecting part holding tank 1131 slot bottom and pole 111 top horizontal
Qi Shi can provide bigger installation space for conducting connecting part 2, further decrease conducting connecting part 2 in above-mentioned short transverse
On to the space holds of battery modules.
Further, the top of above-mentioned pole mounting hole 1133 includes first edge and second edge, first edge and
Two edges are oppositely arranged along the width direction of coping plate 113, and wherein at least one of first edge and second edge are equipped with and lead
Electrical connector avoids face 1133a, when adjacent battery 1 is attached by conducting connecting part 2, enables conducting connecting part 2
It is preferably bonded with conducting connecting part evacuation face 1133a, two neighboring face height mutation is avoided to form arc on conducting connecting part 2
Shape structure, to reduce the space outside the occupancy coping plate 113 of conducting connecting part 2.
Specifically, conducting connecting part evacuation face 1133a can be inclined-plane (such as chamfering, size are not less than 3mm) or arc
Face (such as fillet, size are not less than 3mm).
Further, the top of above-mentioned pole 111 is square platy structure 1111, correspondingly, pole mounting hole 1133
Top is rectangular hole section 1133b, by setting square platy structure 1111 for the top of pole 111, reduces the vertical of pole
To size (i.e. along the size of above-mentioned short transverse), the area at the top of pole 111 is increased, conducting connecting part 2 and its are facilitated
Connection, while itself positioning action can be played to pole 111, prevent pole 111 from rotating.
Further, above-mentioned cap assembly can also include oval sealing ring 112, between pole 111 and coping plate 113
Sealed connection can be realized by oval sealing ring 112.
Specifically, the middle part of pole 111 is the first oval shell of column 1112, and correspondingly, pole mounting hole 1133 includes ellipse
Hole section 1133c, preferably ellipse hole section 1133c are up big and down small stepped hole, the lower section of the stepped hole and the first oval shell of column
1112 match and play positioning action, and the upper section of the stepped hole is equipped with oval sealing ring 112, and the top surface of oval sealing ring 112 is (i.e.
Oval sealing ring 112 far from electrode assembly) and bottom surface (i.e. oval sealing ring 112 close to electrode assembly while) is respectively
Contact bottom surface (i.e. one side of the square platy structure 1111 close to electrode assembly) and the ellipse hole section of square platy structure 1111
The bottom surface (shoulder between the upper section and lower section of i.e. oval hole section 1133c) of 1133c is to form sealing cooperation, using end face seal
Rather than radial seal, it can be improved sealing performance, while oval sealing ring 112 increases end face compared with circular seal ring
Area is further ensured that sealing performance.
Further, above-mentioned battery 1 includes cap assembly 11 and tab connection sheet 12, and tab connection sheet 12 is located at battery case
In vivo, and the lower section of coping plate 113 is set, the bottom of pole 111 is the second oval shell of column 1113, is set in tab connection sheet 12
There is the elliptical hole matched with the second oval shell of column 1113, the second oval shell of column 1113 is connected in the elliptical hole, and the
The bottom surface of two oval shell of columns 1113 reduces the space inside the occupancy battery 1 of pole 111 without departing from the bottom surface of tab connection sheet 12,
The energy density for increasing battery 1, further increases the energy density of battery modules, the elliptical hole of tab connection sheet 12 and corresponding
The second oval shell of column 1113 between pass through welded connecting.
The long axis of above-mentioned first oval shell of column 1112 and the second oval shell of column 1113 prolongs along the length direction of coping plate 113
It stretches, correspondingly, the long axis of oval hole section 1133c and elliptical hole also extends along the length direction of coping plate 113, makes full use of top
Space in cover plate 113 increases the contact area that the two is connected with each other position, guarantees the reliability of connection.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of cap assembly of battery characterized by comprising
Coping plate, the top surface of the coping plate are provided with conducting connecting part holding tank, so that the top surface of conducting connecting part is not higher than
The top surface of the coping plate is provided with the pole mounting hole through the coping plate in the conducting connecting part holding tank；
Pole is arranged in the pole mounting hole, and on the thickness direction of the coping plate, the top surface of the pole is lower than institute
State the top surface of coping plate.
2. cap assembly according to claim 1, which is characterized in that the conducting connecting part holding tank is along the coping plate
Width direction run through the coping plate.
3. cap assembly according to claim 1, which is characterized in that the top of the pole mounting hole includes first edge
And second edge, the first edge and the second edge are opposite along the width direction of the coping plate, the first edge
Conducting connecting part, which is equipped with, at least one of the second edge avoids face.
4. cap assembly according to claim 1, which is characterized in that the top of the pole is square platy structure, institute
The top for stating pole mounting hole is the rectangular hole section matched with the square platy structure.
5. cap assembly according to claim 4, which is characterized in that the middle part of the pole is the first oval shell of column, institute
Stating pole mounting hole includes oval hole section, is equipped with oval sealing ring in the ellipse hole section, the top surface of the ellipse sealing ring and
Bottom surface contacts the bottom surface of the square platy structure and the bottom surface of the oval hole section respectively to form sealing cooperation.
6. a kind of battery, which is characterized in that including any cap assembly of claim 1-5.
7. battery according to claim 6, which is characterized in that the bottom of the pole is the second oval shell of column, the top
The lower section of cover plate is equipped with tab connection sheet, and it is logical that the tab connection sheet is equipped with the ellipse matched with the described second oval shell of column
Hole, the bottom surface of the bottom surface of the second oval shell of column without departing from the tab connection sheet.
8. a kind of battery modules characterized by comprising
Multiple batteries, the battery is using battery described in claim 6 or 7；
Conducting connecting part is connected by conducting connecting part between multiple batteries, and the conducting connecting part setting is led described
In electrical connector holding tank, the top surface of the conducting connecting part is not higher than the top surface of the coping plate.
9. battery modules according to claim 8, which is characterized in that the conducting connecting part is banded structure, described to lead
The both ends of electrical connector are connected to the top surface of the pole of the corresponding battery.
10. battery modules according to claim 9, which is characterized in that the top of the pole of the two neighboring battery
Face passes through a plurality of conducting connecting part connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820913723.4U CN208315621U (en) | 2018-06-13 | 2018-06-13 | Cap assembly, battery and the battery modules of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820913723.4U CN208315621U (en) | 2018-06-13 | 2018-06-13 | Cap assembly, battery and the battery modules of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208315621U true CN208315621U (en) | 2019-01-01 |
Family
ID=64708164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820913723.4U Active CN208315621U (en) | 2018-06-13 | 2018-06-13 | Cap assembly, battery and the battery modules of battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208315621U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024040545A1 (en) * | 2022-08-26 | 2024-02-29 | 宁德时代新能源科技股份有限公司 | Top cover assembly, battery cell, battery, and electric apparatus |
-
2018
- 2018-06-13 CN CN201820913723.4U patent/CN208315621U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024040545A1 (en) * | 2022-08-26 | 2024-02-29 | 宁德时代新能源科技股份有限公司 | Top cover assembly, battery cell, battery, and electric apparatus |
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