CN219643036U

CN219643036U - Battery pack

Info

Publication number: CN219643036U
Application number: CN202321318264.2U
Authority: CN
Inventors: 杨云波; 张德良; 倪志扬; 叶晓波
Original assignee: Ningbo Daye Garden Equipment Co Ltd
Current assignee: Ningbo Daye Garden Equipment Co Ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-09-05
Anticipated expiration: 2033-05-26

Abstract

The utility model provides a battery pack, which comprises a battery cell bracket and a circuit board, wherein the circuit board is connected to the battery cell bracket and is electrically connected with a battery cell unit arranged in the battery cell bracket, and the battery pack is characterized in that: the battery cell bracket comprises a first bracket and a second bracket which are oppositely arranged, and two ends of the circuit board are respectively connected to the first bracket and the second bracket; the battery cell comprises a first bracket and a second bracket, wherein two ends of the first bracket are respectively provided with a battery cell unit, and the two ends of the battery cell unit are respectively provided with a battery cell unit; at least one group of support column units parallel to the battery cell units are arranged between the first support and the second support. The battery pack disclosed by the utility model has the advantages that the installation of the battery cell unit is convenient, the structure is stable after the installation, and abnormal sound is not easy to occur.

Description

Battery pack

Technical Field

The utility model relates to the technical field of battery equipment, in particular to a battery pack.

Background

The electric tool is widely popular with users because the labor intensity of workers can be effectively reduced, the working efficiency of the workers is improved, and the electric tool is widely applied to the fields of building, decoration, gardens, family cleaning and the like. Such as electric drills, electric saws, dust collectors, mowers, pruners, etc. In order to make the use range of the electric tool not limited by the commercial power, the electric tool is generally provided with a battery pack, and the battery pack has the characteristics of convenient carrying and repeated use.

The battery packs currently on the market generally comprise a housing, which is inserted with a power tool, in which a battery unit, typically a battery assembly, is arranged, and can be repeatedly charged and discharged. In the prior art, the battery unit includes electric core unit, circuit board and electric core support, and the circuit board is connected in electric core support outside, installs electric core unit in the electric core support to electric core unit is connected with the circuit board electricity, and still is provided with corresponding grafting terminal on the circuit board. In order to facilitate the installation of the battery cell unit, the existing battery cell support structure is generally arranged into a split two-component structure, and the stability of the two parts of battery cell support in the existing structure is poor after the two parts of battery cell support are connected; in addition, the two ends of the existing battery cell unit are usually directly inserted into the corresponding battery cell supports of the two parts, so that gaps are usually reserved between the battery cell unit and the insertion holes for facilitating the insertion, the battery cell unit is free from limiting support in the radial direction, and friction abnormal sound is easy to occur in the use process.

Disclosure of Invention

The utility model solves the problems that: at least one defect in the prior art is overcome, a battery pack is provided, and the battery cell unit is convenient to install and stable in structure after installation.

In order to solve the problems, the utility model provides a battery pack, which comprises a battery cell bracket and a circuit board, wherein the circuit board is connected to the battery cell bracket and is electrically connected with a battery cell unit arranged in the battery cell bracket, the battery cell bracket comprises a first bracket and a second bracket which are oppositely arranged, and two ends of the circuit board are respectively connected to the first bracket and the second bracket; the battery cell comprises a first bracket and a second bracket, wherein two ends of the first bracket are respectively provided with a battery cell unit, and the two ends of the battery cell unit are respectively provided with a battery cell unit; at least one group of support column units parallel to the battery cell units are arranged between the first support and the second support.

Compared with the prior art, the utility model has the advantages that:

the battery cell bracket for installing the battery cell unit in the battery pack structure comprises two parts of structures which are symmetrically arranged, and the opposite sides of the first bracket and the second bracket are respectively provided with a containing groove for inserting and assembling the two ends of the battery cell unit, so that the battery cell unit can be quickly disassembled and assembled; in addition, two ends of the circuit board are respectively connected to the first bracket and the second bracket, and corresponding support column units are arranged between the first bracket and the second bracket, so that the two brackets are connected conveniently, and the circuit board has good structural stability after connection; in addition, be provided with the spacing subassembly that is used for carrying out radial spacing to the telecommunications unit on the inner wall of storage tank, effectively promote the stable in structure after electric core unit and the electric core leg joint, be difficult for taking place the abnormal sound between the two parts in the use.

Further, the support column unit is including connecting first support column on the first support and connect the second support column on the second support, the one end axial grafting of first support column, second support column, just all be provided with a plurality of strengthening ribs that extend along its axial on the periphery wall of first support column, second support column. Among the above-mentioned structure, realize first support, second leg joint structure's structure reinforcing effect through the axial butt joint of first support column, second support column to all set up the strengthening rib on first support column, second support column outer wall, guarantee the stability of supporting role.

As a structural form, the limiting component comprises a plurality of elastic limiting pieces which are circumferentially distributed and axially extend, two ends of each elastic limiting piece are respectively abutted against the opening end and the bottom end of the accommodating groove, and the middle part of each elastic limiting piece is bent towards the central axis direction of the accommodating groove. In the structure, radial limit after the end part of the battery cell unit is inserted is realized through a plurality of elastic limit parts with bent and convex middle parts, and the limit is stable; in addition, after the elastic limiting piece is added, a gap is formed between the battery cell unit and the inner wall of the accommodating groove, and the heat dissipation effect is achieved.

Preferably, the elastic limiting piece is an elongated spring piece. In the structure, the spring piece is selected as the elastic limiting piece, the structure is simple, and the elastic force is stable and reliable.

As another structural form, the limiting component comprises a plurality of limiting ribs which are circumferentially distributed and axially extend, the limiting ribs are soft rubber which is formed on the inner wall of the accommodating groove in a secondary injection molding mode, and a guiding inclined plane is arranged on one side, close to the opening end of the accommodating groove, of the limiting ribs and faces the central axis of the accommodating groove. In the structure, the radial compression limit of the battery cell unit is realized by adopting the limit convex ribs made of soft rubber materials, the structure is simple, the processing is convenient, and the cost is low.

As an improvement, the first bracket and the second bracket are provided with a plurality of positioning inserting posts near the outer wall of the circuit board, and the circuit board is provided with a plurality of positioning inserting holes which are respectively and mutually inserted and limited with the positioning inserting posts. In the improved structure, the circuit board is positioned through the corresponding positioning inserted column when being connected with the battery cell bracket, so that the accurate installation position is ensured, and the mechanism is stable.

And when the first bracket and the second bracket are connected into a whole relatively, the first positioning half shaft and the second positioning half shaft are combined into a complete cylindrical positioning column for inserting and positioning an object outside the battery cell bracket. In the improved structure, corresponding positioning half shafts are respectively arranged on the first bracket and the second bracket, and after the two brackets are connected together, the two positioning half shafts can be combined into a finished positioning shaft, and the shell outside the power supply bracket is inserted and limited; the object, the first bracket and the second bracket are only stably limited, and the object, the first bracket and the second bracket are very convenient.

And then, the positioning protrusion is arranged on one side of the first positioning half shaft, which is close to the second positioning half shaft, and the positioning groove matched with the positioning protrusion is arranged on one side of the second positioning half shaft, which is close to the first positioning half shaft. Among the above-mentioned improvement structure, the setting of location arch and constant head tank, behind assurance that first support, second support are connected in place that can be better, first location semi-axis and second location semi-axis can be swift, accurate synthetic complete cylindrical reference column.

Additional improved features and advantages of the utility model will be set forth in the detailed description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

Fig. 1 is a partial schematic structure of a battery pack according to the present utility model;

FIG. 2 is another angular schematic view of a partial block diagram of the battery pack of FIG. 1;

fig. 3 is a partial exploded view of a partial structural view of the battery pack of fig. 1;

FIG. 4 is another angular partial exploded view of a partial structural view of the battery pack of FIG. 1;

fig. 5 is a partial cross-sectional view of a battery cell mounting structure according to a first embodiment of the present utility model;

fig. 6 is a partial cross-sectional view of a cell mounting structure in a second embodiment of the present utility model.

Reference numerals illustrate:

1. a cell holder; 2. a circuit board; 3. a first bracket; 4. a second bracket; 5. a receiving groove; 6. a first support column; 7. a second support column; 8. reinforcing ribs; 9. an elastic limiting piece; 10. limiting convex ribs; 11. a guide slope; 12. positioning the inserted column; 13. positioning the jack; 14. a first positioning half shaft; 15. the second positioning half shaft; 16. positioning the bulge; 17. a positioning groove; 18. an electrode sheet; 19. a plug-in piece; 20. a contact piece; 21. a mounting groove; 22. a limit step; 23. a plug terminal; 24. and a plug hole.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiment one:

as shown in fig. 1 and 2, the utility model provides a battery pack, which comprises a battery cell support 1 and a circuit board 2, wherein a battery cell unit is assembled in the battery cell support 1, the circuit board 2 is connected to the battery cell support 1 and is electrically connected with the battery cell unit, and in addition, a corresponding plug-in terminal 23 is also connected to the circuit board 2, and the power supply of an electric tool can be realized through the plug-in terminal 23.

Specifically, the battery core bracket 1 comprises a first bracket 3 and a second bracket 4 which are oppositely arranged, and two ends of the first bracket 3 and the circuit board 2 are respectively connected to the first bracket 3 and the second bracket 4; the opposite sides of the second bracket 4 are respectively provided with accommodating grooves 5 for inserting and assembling the two ends of the battery cell unit, and the inner wall of each accommodating groove 5 is provided with a limiting component for radially limiting the battery cell unit; at least one group of support column units parallel to the battery cell units are arranged between the first support 3 and the second support 4.

More specifically, a plurality of cylindrical accommodating grooves 5 are respectively arranged on one side of the first bracket 3 and the second bracket 4 opposite to each other, the battery cell unit comprises a plurality of cylindrical battery cells, and two ends of each battery cell are respectively inserted and assembled in the accommodating grooves 5 on two sides, so that the structure is simple and the installation is convenient; the electrode plates 18 are respectively arranged on the sides of the first bracket 3 and the second bracket 4, which are away from each other, the plug-in pieces 19 are formed on the sides of the electrode plates 18, which are close to the circuit board 2, the circuit board 2 is provided with jack holes for plugging the plug-in pieces 19, and the plug-in pieces 19 are welded and fixed with the circuit board 2 after being inserted into the corresponding jack holes; the electrode plate 18 is close to the electrode of electric core and is buckled into and takes shape and has contact 20, has all offered on the lateral wall that first support 3, second support 4 deviate from mutually and has supplied contact 20 to inlay the hole of establishing, contact 20 inlay locate inlay establish downthehole and be connected with the electrode of electric core to realize the electrical connection of circuit board 2 and electric core unit.

As shown in fig. 3 and 4, in this embodiment, two support column units are disposed between the first support 3 and the second support 4, and the two support column units are disposed at two ends of the length direction of the cell rack, and are used for supporting and reinforcing after relatively connecting the two supports, so as to ensure structural stability. Specifically, each support column unit comprises a first support column 6 connected to the first support 3 and a second support column 7 connected to the second support 4, wherein a circular inserting hole 24 is formed in one end, far away from the second support 4, of the second support column 7, and one end, far away from the first support 3, of the first support column 6 is axially inserted and fitted in the corresponding inserting hole 24; and a plurality of reinforcing ribs 8 extending along the axial direction of the reinforcing ribs are arranged on the peripheral walls of the first support columns 6 and the second support columns 7, wherein the outer end parts of the reinforcing ribs 8 on the first support columns 6 are lower than the outer ends of the first support columns 6 to form corresponding limit step 22 surfaces, namely, when the first support columns 6 and the second support columns 7 are axially inserted in place, the reinforcing ribs 8 outside the first support columns 6 and the reinforcing ribs 8 outside the second support columns 7 are axially abutted and limited. The reinforcing ribs 8 in the structure not only play a role in enhancing the structural strength of the support column, but also limit the axial positions of the first support column 6 and the second support column 7 during axial insertion.

In this embodiment, the limiting component includes a plurality of elastic limiting members 9 that are circumferentially distributed and axially extend, two ends of each elastic limiting member 9 are respectively abutted against an open end and a bottom end of the accommodating groove 5, and a middle portion of each elastic limiting member 9 is bent toward a central axis direction of the accommodating groove 5. When the end part of the battery cell is inserted into the accommodating groove 5, the middle part of each elastic limiting piece 9 can deform along the radial direction when being extruded by the end part of the battery cell, after the battery cell is inserted in place, the middle deformation part of the elastic limiting piece 9 can be radially held tightly and limited on the outer wall of the battery cell under the action of elastic reset force, so that the stable assembly of the battery cell is realized, and the battery cell is not easy to shake along the radial direction after being installed; on the other hand, after the arrangement, the two ends of the battery cell are not completely sealed with the inner wall of the accommodating groove 5, and the battery cell has corresponding gaps, so that the heat dissipation effect of the battery cell can be achieved. Preferably, in this embodiment, the elastic limiting member 9 is a strip spring piece, so that the elastic deformation force is more stable, the insertion of the battery cell is convenient, and the stable radial clamping force can be provided after the insertion.

In the above structure, the two ends of the elastic limiting member 9 are respectively abutted against the open end and the bottom end of the accommodating groove 5, specifically, a plurality of mounting grooves 21 corresponding to the elastic limiting member 9 are provided on the inner wall of the accommodating groove 5, one end of each groove extends axially to the bottom position of the accommodating groove 5, the other end extends toward the open end of the accommodating groove 5, but does not penetrate through the outer end surface of the accommodating groove 5, that is, a limiting step 22 is formed in the accommodating groove 5 near the open end thereof, when the elastic limiting member 9 is mounted, one end is abutted against the bottom of the accommodating groove 5, the other end is abutted against the limiting step 22, and the middle part of the elastic limiting member 9 is curved toward the central axis direction of the accommodating groove 5, as shown in fig. 5.

In the embodiment, a plurality of positioning pins 12 are disposed on the outer walls of the first and second brackets 3, 4 near the circuit board 2, and a plurality of positioning jacks 13 are disposed on the circuit board 2 and are respectively inserted into the positioning pins 12.

In addition, a first positioning half shaft 14 is arranged on the upper surface of one end of the first bracket 3, a second positioning half shaft 15 is arranged on the upper surface of one end of the second bracket 4, and when the first bracket 3 and the second bracket 4 are relatively connected into a whole, the first positioning half shaft 14 and the second positioning half shaft 15 are combined into a complete cylindrical positioning column for housing plug-in positioning outside the power supply core bracket 1. More specifically, in the above structure, the side of the first positioning half shaft 14 near the second positioning half shaft 15 is provided with the positioning protrusion 16, and the side of the second positioning half shaft 15 near the first positioning half shaft 14 is provided with the positioning groove 17 matched with the positioning protrusion 16, so that after the first bracket 3 and the second bracket 4 are connected in place, the first positioning half shaft 14 and the second positioning half shaft 15 can be assembled into a complete cylindrical positioning column more quickly and accurately.

Example two

The general structure in this embodiment is identical to that of the first embodiment, and the only difference is that the specific structural form of the limiting assembly is different, the limiting assembly in this embodiment includes a plurality of limiting ribs 10 distributed circumferentially and extending axially, and the limiting ribs 10 are soft rubber formed on the inner wall of the accommodating groove 5 by secondary injection molding, and a guiding inclined plane 11 is disposed on one side of each limiting rib 10 near the open end of the accommodating groove 5 and facing the central axis of the accommodating groove 5, as shown in fig. 6.

Although the present disclosure is disclosed above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the disclosure.

Claims

1. The utility model provides a battery package, includes electric core support (1) and circuit board (2), circuit board (2) connect in on electric core support (1), and with install in electric core unit electricity in electric core support (1), its characterized in that: the battery cell bracket (1) comprises a first bracket (3) and a second bracket (4) which are oppositely arranged, and two ends of the circuit board (2) are respectively connected to the first bracket (3) and the second bracket (4); the battery cell structure comprises a battery cell unit, a first support (3) and a second support (4), wherein two opposite sides of the first support (3) and the second support (4) are respectively provided with a containing groove (5) for inserting and assembling two ends of the battery cell unit, and a limiting assembly for radially limiting the battery cell unit is arranged on the inner wall of each containing groove (5); at least one group of support column units parallel to the battery cell units are arranged between the first support (3) and the second support (4).

2. The battery pack according to claim 1, wherein: the support column unit is including connecting first support column (6) on first support (3) and connect second support column (7) on second support (4), the one end axial grafting of first support column (6), second support column (7), just all be provided with a plurality of strengthening ribs (8) along its axial extension on the periphery wall of first support column (6), second support column (7).

3. The battery pack according to claim 1, wherein: the limiting assembly comprises a plurality of elastic limiting pieces (9) which are circumferentially distributed and axially extend, two ends of each elastic limiting piece (9) are respectively abutted against the opening end and the bottom end of the accommodating groove (5), and the middle part of each elastic limiting piece (9) is bent towards the central axis direction of the accommodating groove (5).

4. A battery pack according to claim 3, wherein: the elastic limiting piece (9) is a strip-shaped spring piece.

5. The battery pack according to claim 1, wherein: the limiting assembly comprises a plurality of limiting ribs (10) which are circumferentially distributed and axially extend, the limiting ribs (10) are soft rubber which is formed on the inner wall of the accommodating groove (5) in a secondary injection molding mode, and one side, close to the opening end of the accommodating groove (5), of each limiting rib (10) and facing the central axis of the accommodating groove (5) is provided with a guide inclined surface (11).

6. The battery pack according to any one of claims 1 to 5, wherein: the circuit board is characterized in that a plurality of positioning inserting posts (12) are arranged on the outer walls of the first support (3) and the second support (4) close to the circuit board (2), and a plurality of positioning inserting holes (13) which are respectively in inserting limit with the positioning inserting posts (12) are formed in the circuit board (2).

7. The battery pack according to claim 6, wherein: the upper surface of first support (3) one end is provided with first location semi-axis (14), the upper surface of second support (4) one end is provided with second location semi-axis (15), works as when first support (3), second support (4) are connected as an organic wholely relatively, first location semi-axis (14), second location semi-axis (15) become complete cylindrical reference column, are used for supplying the outside casing cartridge location of electric core support (1).

8. The battery pack according to claim 7, wherein: one side of the first positioning half shaft (14) close to the second positioning half shaft (15) is provided with a positioning protrusion (16), and one side of the second positioning half shaft (15) close to the first positioning half shaft (14) is provided with a positioning groove (17) matched with the positioning protrusion (16).