CN221057555U - Assembly structure of cylindrical lithium battery power pack - Google Patents
Assembly structure of cylindrical lithium battery power pack Download PDFInfo
- Publication number
- CN221057555U CN221057555U CN202322822179.6U CN202322822179U CN221057555U CN 221057555 U CN221057555 U CN 221057555U CN 202322822179 U CN202322822179 U CN 202322822179U CN 221057555 U CN221057555 U CN 221057555U
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- China
- Prior art keywords
- lithium battery
- power pack
- cylindrical lithium
- cavity
- side cover
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 58
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000741 silica gel Substances 0.000 claims abstract description 10
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 10
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 10
- 239000004945 silicone rubber Substances 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims abstract description 6
- 210000001503 joint Anatomy 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 4
- 238000010073 coating (rubber) Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005253 cladding Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000153 supplemental effect Effects 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
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses an assembly structure of a cylindrical lithium battery power pack, which comprises a power pack shell, a side cover and an elastic cushion body, wherein the power pack shell is provided with a plurality of first cavity positions which are arranged in a row and used for loading a plurality of cylindrical lithium battery cores, and the rear ends of the cylindrical lithium battery cores are exposed out of the rear end cavity openings of the first cavity positions. The side cover is correspondingly provided with a plurality of second cavity positions which are inserted into the rear ends of the cylindrical lithium battery cores in a butt joint mode, a communication port is arranged between every two adjacent second cavity positions to achieve communication, and the side cover is fixedly connected with the power cladding body. The elastic cushion body is a plurality of annular cushion bodies corresponding to the back end surfaces of the cylindrical lithium battery cores, an integrally formed cushion body connecting part is arranged between the adjacent annular cushion bodies, and the elastic cushion body is embedded in the second cavity. The elastic cushion body is made of foam, silica gel or silicone rubber, and is integrally injection molded. When the elastic pad body is made of silica gel or silicone rubber, the elastic pad body and the side cover are integrated through secondary injection molding, so that the production efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to an assembly structure of a cylindrical lithium battery power pack.
Background
Lithium batteries are common electrical energy storage devices in modern life, and mainly comprise three types of cylinders, squares and soft packs. When the voltage capacity of a single lithium battery cannot meet the use situation, a plurality of lithium batteries are connected in series or in parallel through electrode plates to form a lithium battery power pack (also called a lithium battery pack), so that the battery pack can meet the use situation of electric tools, electric vehicles and the like. In the production of lithium battery power packs, a plurality of cylindrical battery cells are adopted to form the power pack, and the power pack is mainstream in terms of cost advantages and mass production efficiency advantages caused by portability, combination diversity and module standardization. In the prior art, the assembly of a cylindrical lithium battery power pack is usually provided with an outer shell or a support, a plurality of slots for accommodating cylindrical battery cells are arranged in the outer shell or the support, the cylindrical battery cells are placed one by one in the slots of the outer shell or the support, and a cover body is fixedly connected with the outer shell or the support so as to fixedly lock the cylindrical battery cells in the slots of the outer shell or the support. Even though the cover body is locked with the outer shell or the cover body and the bracket through parts such as screws, a gap exists between the upper end or the lower end of the battery cell and the cover body, so that shaking or movement can be generated.
Therefore, in the prior art, an annular gasket is arranged at the end part of each cylindrical battery cell, the annular gasket has certain elasticity, and the gap is filled through the annular gasket, so that the effects of good shock absorption and impact resistance are achieved, potential safety hazards are reduced, and meanwhile, the stability and reliability of circuit connection are improved. The provision of a free-standing structure of annular gaskets is common practice in the industry today, but also increases the cost of the individual parts, and the cost of the process of their participation in the assembly, as well as the efficiency of the assembly, are also affected.
Disclosure of utility model
In order to overcome the defects of the prior art, the scheme provides an assembly structure of a cylindrical lithium battery power pack, so that the problems that the assembly of the conventional lithium battery power assembly structure corresponds to a plurality of independent annular gaskets, the assembly efficiency is low and the cost is high are solved.
The technical scheme adopted by the utility model is as follows: the assembly structure of the cylindrical lithium battery power pack comprises a power pack shell, a side cover and an elastic cushion body, wherein the power pack shell is provided with a plurality of first cavity positions which are arranged in a row and used for loading a plurality of cylindrical lithium battery cores, the depth of the first cavity positions is smaller than the height of the cylindrical lithium battery cores, and the rear ends of the cylindrical lithium battery cores are exposed out of the rear end cavity openings of the first cavity positions; the side cover is correspondingly provided with a plurality of second cavity positions which are inserted into the rear ends of the cylindrical lithium battery cores in a butt joint mode, a communication port is arranged between the adjacent second cavity positions to achieve communication, and the side cover is fixedly connected with the power cladding body; the elastic cushion body is a plurality of annular cushion bodies corresponding to the back end surfaces of the cylindrical lithium battery cells, an integrally formed cushion body connecting part is arranged between the adjacent annular cushion bodies, and the elastic cushion body is embedded in the second cavity.
Preferably, the elastic pad body is made of foam, silica gel or silicone rubber, the elastic pad body is integrally injection molded, and the side cover is integrally injection molded by plastic; or when the elastic pad body is made of silica gel or silicone rubber, the elastic pad body and the side cover are integrated through secondary injection molding.
Preferably, a plurality of vertically upward protruding clamping hook parts are arranged on two sides of the second cavity of the side cover, and a plurality of bayonet parts for inserting and clamping the clamping hook parts are arranged on two sides of the cavity opening at the rear end of the first cavity of the power pack shell correspondingly.
Further, a plurality of limiting positioning columns protruding upwards vertically are arranged on two sides of the second cavity of the side cover, a plurality of inserting portions used for tightly matching and inserting the limiting positioning columns are arranged on two sides of the cavity opening at the rear end of the first cavity of the power pack shell correspondingly, and the limiting positioning columns and the clamping hook portions are evenly arranged at intervals.
Further, a clamping hook part is omitted from the middle position of one side of the side cover, or a limiting positioning column is omitted, a clamping part is omitted from the position corresponding to one side of the power pack shell, or an inserting part is omitted, so that the power pack shell is abutted to the side cover, and the correct side is identified to be abutted, and the foolproof effect is achieved.
Preferably, the front end of the first cavity position of the power pack shell is provided with a first through hole, the caliber of the first through hole is smaller than that of the cylindrical lithium battery core, and the power pack shell is integrally injection molded by adopting a plastic material.
Preferably, a second through hole is arranged at the bottom of the side cover corresponding to the second cavity position, and the caliber of the second through hole is smaller than that of the cylindrical lithium battery cell. The upper electrode end and the lower electrode end of the cylindrical lithium battery core are exposed out of the first through hole and the second through hole through the first through hole and the second through hole of the side cover on the power pack shell, so that the series connection or the parallel connection between the cylindrical lithium battery cores is facilitated.
The beneficial effects of the utility model are as follows: through the power package casing and the side cap of a plurality of cylinder lithium cell of assembly of this technical scheme design, set up the elastic cushion body in the second intracavity of a plurality of side cap internal design, the elastic cushion body comprises a plurality of annular cushion body, be equipped with integrated into one piece's pad body connecting portion between the adjacent annular cushion body, the elastic cushion body is an entity, compare in the traditional structural design of independent individual packing ring setting in the side cap, and assembly processing, this scheme elastic cushion body structure is as an organic whole, can select integrative injection moulding to production and processing, perhaps adopt rubber coating secondary injection moulding as an organic whole with the side cap, consequently, be favorable to reducing the manufacturing cost of elastic cushion body, improve production efficiency, and the efficiency in elastic cushion body assembly and the side cap also promotes to some extent, correspond also be favorable to reducing assembly cost.
Drawings
Fig. 1 is an exploded view of the structure of the present utility model.
Fig. 2 is an exploded view of the underside of the power pack housing and side cover of the present utility model.
Fig. 3 is a schematic diagram of the assembly of a cylindrical lithium battery cell and a power pack according to the present utility model.
Fig. 4 is a schematic diagram of a two-shot injection molding structure of the elastic pad and the side cover of the present utility model.
Fig. 5 is a side structural perspective view of the present utility model.
Fig. 6 is a perspective view of another side structure of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
In the description of the present utility model, it should be understood that, if the first and second descriptions are only used for distinguishing technical features, they should not be construed as indicating or implying relative importance or implying that the number of technical features is indicated or that the precedence of the technical features is indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 6, an assembly structure of a cylindrical lithium battery power pack mainly comprises a power pack shell 1, a side cover 3 and an elastic cushion 4, wherein the power pack shell 1 is provided with a plurality of first cavity positions 101 which are arranged in a row and used for loading a plurality of cylindrical lithium battery cells 2, the depth of the first cavity positions 101 is smaller than the height of the cylindrical lithium battery cells 2, and the rear end of the cylindrical lithium battery cells 2 is exposed out of a rear end cavity opening of the first cavity positions 101. The side cover 3 is correspondingly provided with a plurality of second cavity positions 301 which are inserted into the rear ends of the plurality of cylindrical lithium battery cells 2 in a butt joint mode, a communication port 3011 is arranged between every two adjacent second cavity positions 301 to achieve communication, and the side cover 3 is fixedly connected with the power pack shell 1. The elastic pad body 4 is a plurality of annular pad bodies 401 corresponding to the rear end surfaces of the plurality of cylindrical lithium battery cores 2, an integrally formed pad body connecting portion 4011 is arranged between the adjacent annular pad bodies 401, and the elastic pad body 4 is embedded in the second cavity 301.
The power pack shell 1 and the side cover 3 of the assembled plurality of cylindrical lithium battery cores 2 designed in the embodiment are provided with the elastic cushion body 4 in the plurality of second cavity positions 301 designed in the side cover 3, the elastic cushion body 4 is composed of a plurality of annular cushion bodies 401, an integrally formed cushion body connecting part 4011 is arranged between the adjacent annular cushion bodies 401, the elastic cushion body 4 is an integral body, compared with the traditional structural design that independent gaskets are arranged on the side cover 3, and the assembly processing, the elastic cushion body 4 is structurally integrated, the production processing can be carried out by selecting an integral injection molding mode, or the elastic cushion body 4 and the side cover 3 are integrally formed by adopting rubber coating and secondary injection molding, therefore, the production cost of the elastic cushion body 4 is reduced, the production efficiency is improved, the efficiency of the assembly of the elastic cushion body 4 and the side cover 3 is also improved, and the assembly cost is correspondingly also reduced.
Referring to fig. 1 and 4, as a preferred embodiment, the elastic pad body 4 is made of foam, silica gel or silicone rubber, the elastic pad body 4 is integrally injection molded, and the side cover 3 is integrally injection molded by plastic; or when the elastic pad body 4 is made of silica gel or silicone rubber, the elastic pad body 4 and the side cover 3 are molded into a whole through encapsulation and secondary injection. The hardness value of the foaming material represented by foam is 30-60 on the Shore A scale, the hardness value of the silica gel and the silicone rubber material is 40-90 on the Shore A scale, and from the aspect of the hardness value, the elastic pad body 4 is preferably made of foam, or silica gel or silicone rubber material, wherein the foam material is more preferable.
It should be noted that the secondary injection molding is a mature injection molding process, and injection molding is performed again on the plastic product which has been injection molded. The main principle of the secondary injection molding is thus to embed one plastic product into another plastic product, so as to obtain a new product with wider applicability.
In the process of the secondary injection molding, it is first necessary to prepare two different kinds of plastic raw materials and melt them separately. The shaped first article is then placed into a mold, the mold is closed, and the first melted supplemental injection molding material is injected. The material will completely encapsulate the first article and form a complete plastic article. Next, the mold needs to be cooled until the new plastic article is completely hardened. And finally, opening the mould and taking out the plastic product subjected to secondary injection molding. The secondary injection molding also has the name of in-mold assembly, and two materials are finally and completely combined together through the secondary injection molding process, so that perfect mechanical or chemical bonding strength is achieved. Therefore, the elastic pad body 4 and the side cover 3 are integrated through a secondary injection molding process, so that the elastic pad body 4 and the side cover 3 are assembled, perfect adhesion is realized, and the assembly efficiency is improved. Meanwhile, the elastic cushion body 4 is beneficial to preventing shaking or moving generated when the cylindrical lithium battery cell 2 is impacted after being assembled.
Referring to fig. 1 and 2, as a preferred connection scheme of the side cover 3 and the power pack housing 1, two sides of the second cavity 301 of the side cover 3 are provided with a plurality of vertically upward protruding clamping hook portions 31, and two sides of a cavity opening at the rear end of the first cavity 101 of the power pack housing 1 are correspondingly provided with a plurality of bayonet portions 11 for inserting the plurality of clamping hook portions 31 into each other for clamping.
Further, a plurality of vertically upward protruding limiting positioning columns 32 are arranged on two sides of the second cavity 301 of the side cover 3, a plurality of plug-in ports 12 for tightly fitting and inserting the limiting positioning columns 32 are arranged on two sides of the cavity opening of the rear end of the first cavity 101 of the power pack shell 1 correspondingly, and the limiting positioning columns 32 and the hook portions 31 are uniformly arranged at intervals. Through the alternate arrangement of a plurality of trip portions 31 and a plurality of spacing reference column 32, and correspond and set up bayonet part 11 and socket portion 12 in power pack casing 1 in order to realize the firm joint of grafting, need not to design screw engaging lug, screw and fix. The side cover 3 and the power pack shell 1 are assembled more simply and conveniently, and the assembly efficiency is improved.
Referring to fig. 1, 2, 5 and 6, further, a hook portion 31 is omitted from the middle position of one side of the side cover 3, or a limiting positioning column 32 is omitted, a hook portion 11 is omitted from the middle position of one side of the power pack housing 1, or an inserting portion 12 is omitted, so that the correct side butt joint is identified when the power pack housing 1 is butt-jointed with the side cover 3, and a fool-proof effect is achieved. In the process of automatically realizing assembly, the related direction of product circuit connection is used for outputting the assembled lithium battery power pack product in a fixed direction at one side, and the power pack shell 1 during assembly is required to be assembled with the side cover 3 in the fixed direction, so that the foolproof structure is designed to realize the purpose.
Referring to fig. 1, preferably, a first through hole 102 is provided at the front end of the first cavity 101 of the power pack housing 1, the caliber of the first through hole 102 is smaller than that of the cylindrical lithium battery core 2, and the power pack housing 1 is integrally injection molded by plastic materials.
Referring to fig. 2, preferably, a second through hole 302 is provided at the bottom of the side cover 3 corresponding to the second cavity 301, and the caliber of the second through hole 302 is smaller than that of the cylindrical lithium battery cell 2. The upper and lower electrode ends of the cylindrical lithium battery cells 2 are exposed out of the first through holes 102 and the second through holes 302 through the first through holes 102 on the power pack shell 1 and the second through holes 302 of the side covers 3, so that the series connection or the parallel connection between the cylindrical lithium battery cells 2 is facilitated.
The foregoing has shown and described the basic principles, main features and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (7)
1. An assembly structure of a cylindrical lithium battery power pack, comprising:
The power pack comprises a power pack shell (1), wherein the power pack shell (1) is provided with a plurality of first cavity positions (101) which are arranged in a row and used for loading a plurality of cylindrical lithium battery cells (2), the depth of the first cavity positions (101) is smaller than the height of the cylindrical lithium battery cells (2), and the rear ends of the cylindrical lithium battery cells (2) are exposed out of the rear end cavity openings of the first cavity positions (101);
the lithium battery pack comprises a plurality of cylindrical lithium battery cells (2), a side cover (3), a plurality of first cavity positions (301) which are inserted into the rear ends of the plurality of cylindrical lithium battery cells in a butt joint mode, and a communication port (3011) which is communicated with each other is arranged between every two adjacent first cavity positions (301), wherein the side cover (3) is fixedly connected with a power pack shell (1);
The elastic cushion body (4), the elastic cushion body (4) is a plurality of annular cushion bodies (401) corresponding to the back end surfaces of a plurality of cylindrical lithium battery cores (2), an integrally formed cushion body connecting part (4011) is arranged between the adjacent annular cushion bodies (401), and the elastic cushion body (4) is embedded in the second cavity position (301).
2. The assembling structure of the cylindrical lithium battery power pack according to claim 1, wherein the elastic pad body (4) is made of foam, silica gel or silicone rubber, the elastic pad body (4) is integrally injection molded, and the side cover (3) is integrally injection molded by plastic; or when the elastic pad body (4) is made of silica gel or silicone rubber, the elastic pad body (4) and the side cover (3) are molded into a whole through rubber coating and secondary injection.
3. The assembling structure of the cylindrical lithium battery power pack according to claim 1, wherein a plurality of vertically upward protruding clamping hook portions (31) are arranged on two sides of the second cavity position (301) of the side cover (3), and a plurality of bayonet portions (11) for inserting the clamping hook portions (31) into the bayonet portions are arranged on two sides of the cavity opening at the rear end of the first cavity position (101) of the power pack shell (1).
4. The assembling structure of the cylindrical lithium battery power pack according to claim 3, wherein a plurality of limiting positioning columns (32) protruding vertically upwards are arranged on two sides of the second cavity position (301) of the side cover (3), a plurality of plug-in ports (12) for tightly matching and plugging the limiting positioning columns (32) are arranged on two sides of the cavity opening at the rear end of the first cavity position (101) of the power pack shell (1), and the limiting positioning columns (32) and the clamping hook portions (31) are uniformly arranged at intervals.
5. The assembling structure of the cylindrical lithium battery power pack according to claim 4, wherein a clamping hook part (31) is omitted from the middle position of one side of the side cover (3), a limiting positioning column (32) is omitted, a clamping opening part (11) is omitted from the position corresponding to one side of the power pack shell (1), or an inserting opening part (12) is omitted, so that the correct side butt joint is identified when the power pack shell (1) is abutted to the side cover (3), and a fool-proof effect is achieved.
6. The assembly structure of the cylindrical lithium battery power pack according to any one of claims 1 to 5, wherein a first through hole (102) is formed in the front end of a first cavity (101) of the power pack shell (1), the caliber of the first through hole (102) is smaller than that of the cylindrical lithium battery core (2), and the power pack shell (1) is integrally injection molded by adopting a plastic material.
7. The assembling structure of the cylindrical lithium battery power pack according to any one of claims 1 to 5, wherein a second through hole (302) is formed in the bottom of the side cover (3) corresponding to the second cavity (301), and the caliber of the second through hole (302) is smaller than that of the cylindrical lithium battery cell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322822179.6U CN221057555U (en) | 2023-10-20 | 2023-10-20 | Assembly structure of cylindrical lithium battery power pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322822179.6U CN221057555U (en) | 2023-10-20 | 2023-10-20 | Assembly structure of cylindrical lithium battery power pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221057555U true CN221057555U (en) | 2024-05-31 |
Family
ID=91202906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322822179.6U Active CN221057555U (en) | 2023-10-20 | 2023-10-20 | Assembly structure of cylindrical lithium battery power pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221057555U (en) |
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2023
- 2023-10-20 CN CN202322822179.6U patent/CN221057555U/en active Active
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