CN219350588U - Single battery and battery pack - Google Patents
Single battery and battery pack Download PDFInfo
- Publication number
- CN219350588U CN219350588U CN202320363321.2U CN202320363321U CN219350588U CN 219350588 U CN219350588 U CN 219350588U CN 202320363321 U CN202320363321 U CN 202320363321U CN 219350588 U CN219350588 U CN 219350588U
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- China
- Prior art keywords
- current collecting
- pole block
- battery
- electrical
- collecting disc
- 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.)
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- 229920003023 plastic Polymers 0.000 claims description 26
- 239000004033 plastic Substances 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 6
- 239000004800 polyvinyl chloride Substances 0.000 description 6
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- -1 Polyethylene Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to the technical field of batteries and discloses a single battery and a battery pack, wherein the single battery comprises a shell, a battery core, a pole block and a current collecting disc, and the shell is provided with a through hole and a containing cavity communicated with the through hole; the battery cell is assembled in the accommodating cavity; the pole block is provided with a through groove, and is assembled on one side of the shell far away from the accommodating cavity, and the through groove is communicated with the through hole; the current collecting disc is assembled in the accommodating cavity, is connected with the battery core to be electrically connected together, and part of the current collecting disc penetrates through the through hole and the through groove and is connected with the pole block. According to the utility model, the battery core and the current collecting disc are assembled in the accommodating cavity of the shell, the pole block is mounted, the current collecting disc penetrates through the through groove of the pole block, and the current collecting disc and the pole block are further fixed together at the outer side of the single battery, so that the current collecting disc and the pole block can be fixed together, the process step of providing the largest operation space, and the current collecting disc and the pole block can be connected more firmly.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a single battery and a battery pack.
Background
As a core component and an energy source of an electric automobile, a power battery is an important point of current research. The storage capacity of the power battery determines the endurance mileage of the automobile. The storage unit of the power battery is a single battery, the single battery generally comprises a pole, a current collecting disc, a battery core, a shell and the like, the battery core and the current collecting disc are assembled in the shell, the current collecting disc is connected with the battery core in a welding way, the pole is connected with the current collecting disc in a welding way, the pole is operated in the shell, the process is complex, and the welding is easy to be removed in the use process.
Disclosure of Invention
The purpose of the utility model is that: a single battery is designed, and the single battery can solve the problem of complex connection process of a current collecting disc and a pole.
In order to achieve the above purpose, the utility model provides a single battery, which comprises a shell, an electric core, a pole block and a current collecting disc, wherein the shell is provided with a through hole and a containing cavity communicated with the through hole; the battery cell is assembled in the accommodating cavity; the pole block is provided with a through groove, and is assembled on one side of the shell far away from the accommodating cavity, and the through groove is communicated with the through hole; the current collecting disc is assembled in the accommodating cavity, is connected with the battery core to be electrically connected together, and part of the current collecting disc penetrates through the through hole and the through groove and is connected with the pole block.
Optionally, the current collecting disc includes an electrical portion and an extension portion connected to the electrical portion, where the electrical portion is connected to the electrical core, so that the electrical portion is electrically connected to the electrical core, and the extension portion passes through the via hole and the through slot to be connected to the pole block.
Optionally, the pole piece and the electrical part are clamped on the housing.
Optionally, the electrical portion is provided with an avoidance hole, and the extension portion surrounds the avoidance hole to form a cavity.
Optionally, the number of the extending portions is multiple, the extending portions are respectively disposed on the electrical portion, the extending portions are spaced from each other, the number of the through slots is multiple, and the extending portions are respectively inserted into the through slots.
Optionally, the current collecting disc further includes a fixing portion, and the fixing portion is connected with the extending portion and is attached to a side, away from the electrical portion, of the pole block.
Optionally, the pole block is provided with a limiting groove, the fixing portion is accommodated in the limiting groove, and the fixing portion does not exceed one side, away from the electrical portion, of the pole block.
Optionally, a welding mark is arranged on one side of the electrical part away from the battery core, the electrical part is connected with the battery core in a welding way, and the pole block is connected with the extension part in a welding way or in a riveting way.
Optionally, the single battery further comprises an upper plastic, a lower plastic and an insulating ring, wherein the upper plastic is arranged on one side of the shell away from the accommodating cavity, the lower plastic is arranged on one side of the shell close to the accommodating cavity, the pole block is propped against the upper plastic on the shell, the current collecting disc is propped against the lower plastic on the shell, the insulating ring is wound with the current collecting disc, and the current collecting disc is propped against the hole wall of the through hole through the insulating ring.
In order to achieve the above object, the present utility model provides a battery pack comprising: the box and a plurality of single batteries according to any one of the above, a plurality of single batteries are electrically connected together and assembled in the box.
Compared with the prior art, the single battery and the battery pack have the beneficial effects that:
the single battery comprises a shell, an electric core, a pole block and a current collecting disc. The shell is provided with a through hole and a containing cavity communicated with the through hole, the shell can be cylindrical or rectangular, and the through hole can be a round hole or a square hole; the battery cell is assembled in the accommodating cavity and is formed by sequentially laminating a positive plate, a diaphragm and a negative plate; the pole block is provided with a through groove, the through groove penetrates through the pole block, the pole block is assembled on one side, far away from the accommodating cavity, of the shell, the through groove is communicated with the through hole, and the pole block is used for being connected with a busbar of the battery pack, so that the pole block is further connected with external charging equipment or electric equipment; the current collecting disc is assembled in the accommodating cavity and is connected with the battery core to be electrically connected together, and part of the current collecting disc penetrates through the through hole and the through groove and is connected with the pole block. The fixing positions of the current collecting disc and the pole block are arranged outside the shell, so that a large enough operation space can be provided for the fixing process step, and the current collecting disc and the pole block can be connected more firmly.
Drawings
Fig. 1 is an assembled schematic view of a single battery provided in the present application;
FIG. 2 is an exploded schematic view of a cell provided herein;
FIG. 3 is a schematic cross-sectional view of a cell provided herein;
fig. 4 is a partially enlarged schematic illustration of a first embodiment of a battery cell provided herein in a pole block region;
FIG. 5 is an enlarged partial schematic view of a second embodiment of a battery cell provided herein in a pole block region;
fig. 6 is a schematic structural view of a battery pack provided in the present application.
In the drawing, a housing 102 of a through hole 101 of a housing 10 of a single battery 100 is accommodated
Through groove 301 and limit groove 302 of pole block 30 of battery cell 20
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present utility model are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be understood that the terms "connected," "fixed," and the like are used in the present utility model in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; the mechanical connection can be realized, and the welding connection can be realized; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The terms "first", "second", etc. are used in the present utility model to describe various information, but the information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the utility model.
Referring to fig. 1 to 4, fig. 1 is an assembly schematic diagram of a battery cell 100 provided in the present application, fig. 2 is an exploded schematic diagram of the battery cell 100 provided in the present application, fig. 3 is a cross-sectional schematic diagram of the battery cell 100 provided in the present application, and fig. 4 is a partially enlarged schematic diagram of a first embodiment of the battery cell 100 provided in the present application in a region of a pole block 30.
The unit cell 100 of the present embodiment includes a housing 10, a battery cell 20, a pole block 30, and a current collecting plate 40. The shell 10 is provided with a through hole 101 and a containing cavity 102 communicated with the through hole 101, the shell 10 can be cylindrical or rectangular, and the through hole 101 can be a circular hole or a square hole; the battery cell 20 is assembled in the accommodating cavity 102, and the battery cell 20 is formed by sequentially laminating a positive plate, a diaphragm and a negative plate; the pole block 30 is provided with a through groove 301, the through groove 301 penetrates through the pole block 30, the through groove 301 is communicated with the through hole 101, and the pole block 30 is used for being connected with a busbar of a battery pack so as to be further connected with external charging equipment or electric equipment; the current collecting plate 40 is assembled in the accommodating cavity 102 and connected with the battery core 20 to be electrically connected together, and part of the current collecting plate 40 penetrates through the through hole 101 and the through groove 301 and is connected with the pole block 30.
In this embodiment, the battery core 20 and the current collecting plate 40 are assembled in the accommodating cavity 102 of the housing 10, then the pole block 30 is installed, the current collecting plate 40 passes through the through slot 301 of the pole block 30, and the current collecting plate 40 and the pole block 30 are further fixed together at the outer side of the housing 10, so that a large enough operation space can be provided for the process step of fixing the current collecting plate 40 and the pole block 30 together, the normal operation of various advanced production processes is facilitated, and the connection between the current collecting plate 40 and the pole block 30 is more reliable.
Further, the pole block 30 is assembled on a side of the housing 10 away from the accommodating cavity 102, and in the axial direction of the via hole 101, the projection of the pole block 30 covers the via hole 101, and the pole cannot fall into the accommodating cavity 102 through the via hole 101.
The current collecting plate 40 includes an electrical portion 41 and an extension portion 42 connected to the electrical portion 41, where the electrical portion 41 is connected to the electrical core 20, the electrical portion 41 is electrically connected to the electrical core 20, the extension portion 42 is connected to the pole block 30 through the via 101 and the through slot 301, and the extension portion 42 further electrically connects the electrical portion 41 and the pole block 30 together. The collecting tray 40 may be made of metal such as iron, copper, or aluminum. The electrical portion 41 may be connected to the battery cell 20 by elastic contact, and may be connected together by direct contact.
Further, a solder is disposed on a side of the electrical portion 41 away from the battery cell 20, and the electrical portion 41 is in solder connection with the battery cell 20, so as to further improve the connection strength between the electrical portion 41 and the battery cell 20.
Further, the pole block 30 and the extension portion 42 may be welded, and after the extension portion 42 and the pole block 30 are melted by high temperature, the extension portion 42 and the pole block 30 may be welded together after being cooled. The pole piece 30 and the extension portion 42 may be connected by riveting, so that an impact force is applied to the extension portion 42, and after the end portion of the extension portion 42 is deformed and enlarged, the extension portion 42 and the pole piece 30 are connected together.
The shell 10 is clamped between the pole block 30 and the electrical portion 41, the electrical portion 41 is located on one side of the shell 10 close to the accommodating cavity 102, at least part of the electrical portion 41 falls on the shell 10 in the axial direction of the through hole 101, the pole block 30 abuts against one side of the shell 10 away from the accommodating cavity 102, the polar portion abuts against one side of the shell 10 close to the accommodating cavity 102, and therefore the state of clamping the shell 10 is formed, and after the extending portion 42 and the pole block 30 are fixed, the pole block 30 and the current collecting disc 40 are fixed with the shell 10.
The electrical portion 41 is provided with the avoidance hole 412, the extension portion 42 surrounds the avoidance hole 412 and is provided with the cavity 414, the avoidance hole 412 is correspondingly communicated with the via hole 101, the cavity 414 is in a cavity state, and compared with the solid extension portion 42, the current collecting disc 40 can be lighter, and materials for manufacturing the current collecting disc 40 can be saved. In addition, the cavity 414 of the extension 42 may provide mounting space for other components.
The number of the extending portions 42 may be plural, the plurality of extending portions 42 are respectively disposed on the electrical portion 41, the plurality of extending portions 42 are spaced from each other, the number of the through slots 301 is plural, the plurality of extending portions 42 are respectively disposed in the plurality of through slots 301, one extending portion 42 is correspondingly inserted into one through slot 301, and each extending portion 42 is respectively connected with the pole block 30. The spaced extensions 42 have a sufficiently large deformation space to allow for easy insertion of a swing of a certain amplitude into the corresponding through slots 301.
Referring to fig. 5, fig. 5 is a partially enlarged schematic illustration of a second embodiment of a battery cell 100 in the region of a pole block 30 according to the present application.
The current collecting plate 40 further includes a fixing portion 43, where the fixing portion 43 is connected to the extending portion 42 and is attached to a side of the pole block 30 away from the electrical portion 41. At the beginning of assembly, the fixing part 43 and the extending part 42 are parallel or approximately parallel, after the fixing part 43 passes through the through groove 301, the fixing part 43 exceeds the through groove 301, a bending force is applied to the fixing part 43, and the fixing part 43 moves towards the pole block 30 until the fixing part is abutted against the pole block 30, so that the back-off is formed.
The pole block 30 is provided with a limit groove 302, the limit groove 302 is located on one side of the pole block 30 away from the battery core 20, the fixing portion 43 is accommodated in the limit groove 302, the fixing portion 43 does not exceed one side of the pole block 30 away from the electric portion 41, the plane where the top surface of the pole block 30 is located is a flat plane, and the limit groove 302 wraps the fixing portion 43, so that the pole block 30 is not blocked from being connected with a bus bar of a battery pack.
The single battery 100 further includes an upper plastic 50, a lower plastic 60, and an insulating ring 70, where the upper plastic 50 is disposed on one side of the housing 10 away from the accommodating cavity 102, the lower plastic 60 is disposed on one side of the housing 10 near the accommodating cavity 102, the pole block 30 presses the upper plastic 50 against the housing 10, the upper plastic 50 insulates between the pole block 30 and the housing 10, the current collecting plate 40 presses the lower plastic 60 against the housing 10, the lower plastic 60 insulates between the current collecting plate 40 and the housing 10, the insulating ring 70 winds the current collecting plate 40, the current collecting plate 40 presses the wall of the via hole 101 through the insulating ring 70, and the insulating ring 70 insulates between the current collecting plate 40 and the wall of the via hole 101. The current collecting plate 40 and the pole piece 30 are insulated from the housing 10 by the upper plastic 50, the lower plastic 60, and the insulating ring 70.
The material of the upper plastic 50 may be Polyethylene (PE), polypropylene (PP), polyvinyl chloride (Polyvinyl Chloride, PVC), acrylonitrile-Butadiene-styrene copolymer (ABS), or the like. The material of the lower plastic 60 may be Polyethylene (PE), polypropylene (PP), polyvinyl chloride (Polyvinyl Chloride, PVC), acrylonitrile-Butadiene-styrene copolymer (ABS), or the like. The material of the insulating ring 70 may be silica gel or rubber.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a battery pack provided in the present application.
This embodiment protects a battery package, and the battery package includes: the case 200 and the plurality of unit cells 100 according to any one of the above, the plurality of unit cells 100 are electrically connected together and assembled in the case 200.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (10)
1. A single cell, characterized by comprising:
the shell is provided with a via hole and a containing cavity communicated with the via hole;
the battery cell is assembled in the accommodating cavity;
the pole block is provided with a through groove, is assembled on one side of the shell away from the accommodating cavity, and is communicated with the through hole;
and the current collecting disc is assembled in the accommodating cavity, connected with the battery core and electrically connected with the battery core, and part of the current collecting disc penetrates through the through hole and the through groove and is connected with the pole block.
2. The battery cell of claim 1, wherein the current collecting plate comprises an electrical portion and an extension portion connected to the electrical portion, the electrical portion is connected to the electrical core, so that the electrical portion is electrically connected to the electrical core, and the extension portion penetrates through the via hole and the through slot to be connected to the pole block.
3. The battery cell of claim 2, wherein the pole piece and the electrical portion are sandwiched between the housing.
4. The battery cell as recited in claim 2, wherein the electrical portion defines an escape aperture, and the extension defines a cavity around the escape aperture.
5. The battery cell according to claim 4, wherein the number of the extending portions is plural, the extending portions are respectively disposed on the electrical portion, the extending portions are spaced apart from each other, the number of the through slots is plural, and the extending portions are respectively inserted into the through slots.
6. The unit cell according to claim 2, wherein the current collecting plate further comprises a fixing portion, and the fixing portion is connected with the extending portion and is attached to a side of the pole block away from the electrical portion.
7. The unit cell according to claim 6, wherein the pole block is provided with a limit groove, the fixing portion is accommodated in the limit groove, and the fixing portion does not exceed a side of the pole block away from the electrical portion.
8. The unit cell according to claim 2, wherein a welding mark is provided on a side of the electrical portion away from the battery cell, the electrical portion is welded to the battery cell, and the pole block and the extension portion are welded or riveted.
9. The cell of claim 1, further comprising an upper plastic, a lower plastic, and an insulating ring, wherein the upper plastic is disposed on a side of the housing away from the accommodating cavity, the lower plastic is disposed on a side of the housing close to the accommodating cavity, the pole block abuts against the upper plastic on the housing, the current collecting disc abuts against the lower plastic on the housing, the insulating ring winds the current collecting disc, and the current collecting disc abuts against a hole wall of the via hole through the insulating ring.
10. A battery pack, comprising: a case and a plurality of the unit cells of any one of claims 1 to 9, the plurality of unit cells being electrically connected together and assembled in the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320363321.2U CN219350588U (en) | 2023-02-21 | 2023-02-21 | Single battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320363321.2U CN219350588U (en) | 2023-02-21 | 2023-02-21 | Single battery and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219350588U true CN219350588U (en) | 2023-07-14 |
Family
ID=87102707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320363321.2U Active CN219350588U (en) | 2023-02-21 | 2023-02-21 | Single battery and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219350588U (en) |
-
2023
- 2023-02-21 CN CN202320363321.2U patent/CN219350588U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518132 1-2/F, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |