CN214043831U - Group structure of square lithium battery - Google Patents
Group structure of square lithium battery Download PDFInfo
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- CN214043831U CN214043831U CN202023328438.2U CN202023328438U CN214043831U CN 214043831 U CN214043831 U CN 214043831U CN 202023328438 U CN202023328438 U CN 202023328438U CN 214043831 U CN214043831 U CN 214043831U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a group structure of square lithium batteries, which comprises a main body bracket of a rectangular uncovered box body and a plurality of square battery cells uniformly arranged in the main body bracket; the top of the square battery cell is connected with a PCB protection board; the top of the main body bracket is fixed through the upper cover bracket. The utility model discloses a mutual interference fit of support to the main part support inclination is kept apart to first isolation support and second, corrects main part support inboard surface and constitutes face-to-face cooperation with electric core surface, and the division board uses the slider to guarantee not have the square electric core surface of cooperation of draft inclination, and the second keeps apart and sets up whole line district through spacing direction muscle on the support, guarantees the isolation safety of wire rod to it is fixed to provide reliable support for the PBC protection shield. The support has improved holistic structural nature with the plane cooperation of electric core, and the multifunctionality of support is kept apart to the second, the effectual uniformity that has improved the structure has improved the reliability of structure, and the main part support has improved the security of electric core with the effective buckle cooperation of upper cover support.
Description
Technical Field
The utility model relates to a lithium cell technical field especially involves a group's structure of square lithium cell.
Background
With the progress and development of society, the intellectualization in the aspects of storage, family, trip and the like, the diversification of mobile consumer electronic products, and the adoption of batteries as clean energy providers, the batteries are more and more popular and favored by consumers and become an indispensable part of electronic products. In the application process, the reliability of the battery pack is beneficial to improving the service life of the battery during operation, and the reliability of the whole battery surrounding environment is improved, so that the battery pack is more comfortable and improves the user acceptance during the use process, and becomes a very significant research subject.
The existing square battery pack adopts loose stacking with a simple structure, is placed together, adopts an injection molding shell, produces a drawing angle by an injection molding process, cannot be tightly matched with an electric core, and is loose and serious, so that the actual effect risk of electric connection of the battery pack is greatly improved in the vibration or falling process, and the possibility of damaging the structure is greatly improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the weak point among the above-mentioned prior art and provide a group's structure of square lithium cell that the structure is reliable, the uniformity is strong, factor of safety is high.
The utility model discloses a realize through following mode:
a group structure of square lithium batteries comprises a main body bracket of a rectangular uncovered box body and a plurality of square battery cores which are uniformly arranged in the main body bracket; the top of the square battery cell is connected with a PCB protection board; the main part support top is fixed through the upper cover support, its characterized in that: gaps are formed between the opposite surfaces of any two square battery cells so as to form a plurality of transverse grooves and longitudinal grooves which are staggered transversely and longitudinally in the main body bracket; a first isolating bracket is arranged in the longitudinal groove; first avoidance grooves which are opposite to the transverse grooves in position and equal in number are arranged above the first isolation plate of the first isolation bracket; the first isolation support and the second isolation support are matched: the bottom of the second isolation bracket is provided with second isolation plates which are equal to the number of the transverse grooves and are arranged in the transverse grooves; the bottom of the second isolation plate is provided with second avoidance grooves which are equal to the number of the longitudinal grooves and are clamped with the first avoidance grooves; the two sides of the first isolation plate and the second isolation plate are respectively provided with a clamping piece clamped with the side wall of the main body support.
Furthermore, an isolation groove matched with the clamping sheet is arranged on the side wall of the main body support; the bottom of the isolation groove is provided with a limiting block; the top of the clamping sheet and the first isolation plate or the second isolation plate are integrally formed, and a position avoiding groove is formed below the connecting part; the bottom of the clamping piece is provided with a bayonet which is clamped with the limiting block.
Further, the width of the first avoidance groove is larger than that of the transverse groove.
Further, the width of the second avoiding groove is larger than that of the longitudinal groove.
Furthermore, a plurality of limiting guide ribs are arranged at the top of the second isolating support, and a wire limiting groove is formed between the two oppositely arranged limiting guide ribs; and a connecting lead is clamped in the wire limiting groove.
Furthermore, a PCB protection board is connected to the top of the second isolation bracket; the limiting guide ribs penetrate through holes arranged at corresponding positions on the PCB protection board and are in contact with the bottom of the upper cover support.
Furthermore, a PCB protection board is connected to the top of the second isolation bracket; the PCB protection board is connected with a screw fixing column at the top of the second isolation bracket through a screw; and a pole piece is welded between the PCB protection plate and the square battery cell.
Furthermore, a plurality of fixing pieces are arranged on the side edge of the upper cover bracket; the bottom of the fixing piece is provided with a fixing piece clamping groove; the fixed sheet clamping groove is clamped with a limiting buckle arranged on the outer side of the main body support.
Furthermore, the fitting surfaces of the first isolation plate and the second isolation plate with the battery core are non-drawing surfaces.
Further, the sum of the depths of the first avoidance groove and the second avoidance groove is greater than the length of the square battery cell.
The beneficial effects of the utility model reside in that: keep apart the mutual interference fit of support to the main part support inclination through first isolation support and second, correct the main part support inboard surface and constitute face-to-face cooperation with electric core surface, the division board uses the square electric core surface of cooperation that the slider guaranteed not have the draft inclination, sets up whole line district through spacing direction muscle on the second isolation support, guarantees the isolation safety of wire rod to it is fixed to provide reliable support for the PBC protection shield. The support has improved holistic structural nature with the plane cooperation of electric core, and the multifunctionality of support is kept apart to the second, the effectual uniformity that has improved the structure has improved the reliability of structure, and the effective buckle cooperation of main part support and upper cover support has improved the security of electric core, and the part that wholly uses the metal accounts for than very little, has improved the security greatly from the safety angle.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is an exploded view of a square battery pack structure of the present invention;
FIG. 2 is a schematic view of the main body of the present invention;
FIG. 3 is a schematic diagram of a square cell structure of the present invention;
FIG. 4 is a schematic view of a first isolation bracket of the present invention;
FIG. 5 is a schematic view of a second isolation frame of the present invention;
FIG. 6 is a schematic view of a second spacer interference guide of the present invention;
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1 to 5, a group structure of a square lithium battery includes a main body support 1 of a rectangular uncovered box body and a plurality of square battery cells 2 uniformly arranged therein; the top of the square electric core 2 is connected with a PCB protection plate 7; the top of the main body support 1 is fixed through an upper cover support 9, and the main body support is characterized in that: gaps are formed between the opposite surfaces of any two square battery cores 2 so as to form a plurality of transverse grooves 21 and longitudinal grooves 22 which are staggered transversely and longitudinally in the main body bracket 1; a first isolating bracket 3 is arranged in the longitudinal groove 22; first avoidance grooves 32 which are opposite to the transverse grooves 21 in position and equal in number are arranged above the first isolation plate 31 of the first isolation bracket 3; the first isolation bracket 3 and the second isolation bracket 5 are matched: the bottom of the second isolation bracket 5 is provided with second isolation plates 51 which are equal to the number of the transverse grooves 21 and are arranged in the transverse grooves; the bottom of the second isolation plate 51 is provided with second avoidance grooves 52 which are equal to the number of the longitudinal grooves 22 and are clamped with the first avoidance grooves 32; the first isolation plate 31 and the second isolation plate 51 are provided with two sides with locking pieces 4 engaged with the side wall of the main body support 1.
In an embodiment of the present invention, the sidewall of the main body frame 1 is provided with an isolation groove 11 matching with the position-locking piece 4; the bottom of the isolation groove 11 is provided with a limiting block 13; the top of the position clamping sheet 4 and the first isolation plate 31 or the second isolation plate 51 are integrally formed, and a position avoiding groove 41 is formed below the connection part; the bottom of the position clamping sheet 4 is provided with a bayonet 42 clamped with the limiting block 13.
In an embodiment of the present invention, the width of the first avoiding groove 32 is greater than the width of the transverse groove 21.
In an embodiment of the present invention, the width of the second avoiding groove 52 is greater than the width of the longitudinal groove 22.
In an embodiment of the present invention, the top of the second isolation bracket 5 is provided with a plurality of limiting guiding ribs 53, and a wire limiting groove 54 is formed between the two limiting guiding ribs 53 which are oppositely arranged; and a connecting lead is clamped in the wire limiting groove 54.
In an embodiment of the present invention, the top of the second isolation bracket 5 is connected to a PCB protection board 7; the limiting guide rib 53 penetrates through a through hole arranged at a corresponding position on the PCB protection plate 7 to be contacted with the bottom of the upper cover bracket 9.
In an embodiment of the present invention, the top of the second isolation bracket 5 is connected to a PCB protection board 7; the PCB protection board 7 is connected with a screw fixing column 55 at the top of the second isolation bracket 5 through a screw 8; and a pole piece 6 is welded between the PCB protection plate 7 and the square electric core 2.
In an embodiment of the present invention, a plurality of fixing pieces 91 are disposed on the side of the upper cover bracket 9; a fixing piece clamping groove 93 is formed in the bottom of the fixing piece 91; the fixing piece clamping groove 93 is clamped with a limit buckle 12 arranged on the outer side of the main body support 1.
In an embodiment of the present invention, the fitting surfaces of the first isolation plate 31 and the second isolation plate 51 and the battery cell 2 are non-pattern surfaces.
In an embodiment of the present invention, the sum of the depths of the first avoiding groove 32 and the second avoiding groove 52 is greater than the length of the square electrical core 2.
In an embodiment of the utility model, the first isolation bracket 3 and the second isolation bracket 5 are respectively in interference fit with the main body bracket 1, and the inner side surface of the main body bracket 1 and the surface of the square battery cell 2 form face-to-face fit;
as shown in fig. 6, the outer draft angle of the second isolation bracket 5 is equal to the inner draft angle of the main body bracket 1, when the square battery cell 2 is placed in the main body bracket 1, the interference area of the bracket draft formed by the side surfaces of the second isolation plate 51 and the square battery cell 2 is offset with the clearance area of the housing draft formed by the square battery cell 2 and the inner side of the main body bracket 1, and a stable connection relationship is formed in cooperation with the position-locking piece 4 arranged at the outer side of the second isolation plate 51. In the same way, the external draft angle of the first isolation bracket 3 is equal to the internal draft angle of the main bracket 1, so that stable connection is formed.
The first isolation support 3 and the second isolation support 5 are both manufactured by injection molding technology, and both the first isolation support and the second isolation support are matched by a non-drawing surface and a cell plane; the injection molding adopts a slide block to realize a non-drawing surface, the size of the non-drawing surface is determined according to the size of the battery cell, and the necessary size is not limited;
the second isolation bracket 5 is integrally designed, and the size of a limiting guide rib 53 of a wire limiting groove 54 is determined according to the diameter of a wire; the height of the wire limiting groove 54 is determined according to the height of the PCB protection plate 7 and the height of the wire, the length of the wire limiting groove 54 is adjusted according to the distance between the selected cells, and the material of the wire limiting groove 54 is not limited, and may be ABS, PC, or the like.
The first isolation support 3 and the second isolation support 5 are reliably fixed with the main body support 1, and are matched with the fixing piece clamping grooves 93 and the limiting buckles 12, and the number of the limiting buckles is 6;
the first isolation bracket 3 and the second isolation bracket 5 are mutually inserted between the battery cells through the first avoidance groove 32 and the second avoidance groove 52; the opening widths of the first avoidance groove 32 and the second avoidance groove 52 are at least larger than the clearance gap of the battery cell, and the heights of the grooves are not interfered and matched with each other between the first avoidance groove 32 and the second avoidance groove 52;
the limiting guide rib 53 of the second isolating support 5 also supports the pressure transmission between the battery cell and the upper cover support, so that the effective end face of the battery cell is ensured to be fixed; the wire guide ribs of the second isolation bracket 5 support the pressure-stressed surfaces of the battery cell and the upper cover bracket, the size or the shape of the wire guide ribs can be adjusted in the length direction and the thickness direction, the wire guide ribs can be not regular rectangles or hollow rectangles, and the stressed area is increased;
the pole piece 6 comprises a total positive pole piece and a total negative pole piece; the connection of the total positive plate and the total negative plate is welded by adopting an L-shaped matched PCB protection plate 7; the pole piece 6 is L-shaped, the size of the L-shaped pole piece is designed according to the current output or input requirement, the thickness size is adjusted according to the selection of a welding process, the material can be copper material, aluminum material and the like, and the welding process can be gas shielded welding, friction welding and the like;
the second isolation bracket 5 provides a reliable fixing position for the PCB protection plate 7 by adopting a bolt 8, and 4 bolts are provided; the number of the fixing positions of the screw 8 of the PCB protection plate 7 is the specification of ST2.9, the number of the fixing positions is determined according to the area of the PCB protection plate 7, and the number of the fixing positions is determined on averagePer 10000mm 24 screws are arranged in the area of the screw;
the matching of the upper cover bracket 9 and the main body bracket 1 is realized through the buckling connection, and the total number of 8 positions is realized through the buckling form of the fixing piece clamping groove 93 and the limiting buckle 12; the total positive wire and the total negative wire are led out from the PCB to the through hole 92 of the upper cover bracket 9 through wires and are exposed outside through the upper cover bracket 9, and the size of the through hole of the wires is determined according to the wires selected by the load of current.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A group structure of square lithium batteries comprises a main body bracket (1) of a rectangular uncovered box body and a plurality of square battery cores (2) uniformly arranged in the main body bracket; the top of the square battery cell (2) is connected with a PCB protection board (7); main part support (1) top is fixed through upper cover support (9), its characterized in that: gaps are formed between the opposite surfaces of any two square battery cores (2) so as to form a plurality of transverse grooves (21) and longitudinal grooves (22) which are staggered transversely and longitudinally in the main body bracket (1); a first isolating bracket (3) is arranged in the longitudinal groove (22); first avoidance grooves (32) which are opposite to the transverse grooves (21) in position and equal in number are arranged above the first isolation plate (31) of the first isolation bracket (3); the first isolation support (3) is matched with the second isolation support (5): the bottom of the second isolation bracket (5) is provided with second isolation plates (51) which are equal to the number of the transverse grooves (21) and are arranged in the transverse grooves; the bottom of the second isolation plate (51) is provided with second avoidance grooves (52) which are equal to the number of the longitudinal grooves (22) and are clamped with the first avoidance grooves (32); the clamping sheets (4) clamped with the side wall of the main body support (1) are arranged on the two sides of the first isolation plate (31) and the second isolation plate (51).
2. The unitized structure of a lithium prismatic battery of claim 1, wherein: an isolation groove (11) matched with the clamping sheet (4) is formed in the side wall of the main body support (1); the bottom of the isolation groove (11) is provided with a limiting block (13); the top of the clamping sheet (4) and the first isolation plate (31) or the second isolation plate (51) are integrally formed, and a position avoiding groove (41) is formed below the joint; the bottom of the clamping piece (4) is provided with a bayonet (42) clamped with the limiting block (13).
3. The unitized structure of a lithium prismatic battery of claim 1, wherein: the width of the first avoiding groove (32) is larger than that of the transverse groove (21).
4. The unitized structure of a lithium prismatic battery of claim 1, wherein: the width of the second avoidance groove (52) is larger than that of the longitudinal groove (22).
5. The unitized structure of a lithium prismatic battery of claim 1, wherein: the top of the second isolation bracket (5) is provided with a plurality of limiting guide ribs (53), and a wire limiting groove (54) is formed between the two limiting guide ribs (53) which are oppositely arranged; and a connecting lead is clamped in the wire limiting groove (54).
6. The unitized structure of a lithium prismatic battery as claimed in claim 5, wherein: the top of the second isolation bracket (5) is connected with a PCB protection plate (7); the limiting guide ribs (53) penetrate through holes arranged at corresponding positions on the PCB protection board (7) and are in contact with the bottom of the upper cover support (9).
7. The unitized structure of a lithium prismatic battery of claim 1, wherein: the top of the second isolation bracket (5) is connected with a PCB protection plate (7); the PCB protection board (7) is connected with a screw fixing column (55) at the top of the second isolation bracket (5) through a screw (8); and a pole piece (6) is welded between the PCB protection plate (7) and the square electric core (2).
8. The unitized structure of a lithium prismatic battery of claim 1, wherein: a plurality of fixing pieces (91) are arranged on the side edge of the upper cover bracket (9); a fixing piece clamping groove (93) is formed in the bottom of the fixing piece (91); the fixing piece clamping groove (93) is clamped with a limiting buckle (12) arranged on the outer side of the main body support (1).
9. The unitized structure of a lithium prismatic battery of claim 1, wherein: the matching surfaces of the first isolation plate (31) and the second isolation plate (51) and the battery core (2) are non-drawing surfaces.
10. The unitized structure of a lithium prismatic battery of claim 1, wherein: the sum of the depths of the first avoidance groove (32) and the second avoidance groove (52) is larger than the length of the square battery cell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328438.2U CN214043831U (en) | 2020-12-30 | 2020-12-30 | Group structure of square lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328438.2U CN214043831U (en) | 2020-12-30 | 2020-12-30 | Group structure of square lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214043831U true CN214043831U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023328438.2U Active CN214043831U (en) | 2020-12-30 | 2020-12-30 | Group structure of square lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214043831U (en) |
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2020
- 2020-12-30 CN CN202023328438.2U patent/CN214043831U/en active Active
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