CN219643052U

CN219643052U - Battery pack module

Info

Publication number: CN219643052U
Application number: CN202321330395.2U
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 module, 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 module 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 module 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 module

Technical Field

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

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 configured with a battery pack module, and the battery pack module has the characteristics of convenient carrying and repeated use.

The battery pack module currently on the market generally comprises a housing inserted with the electric tool, and a battery unit, which is usually a storage battery assembly, is arranged in the housing and can be repeatedly charged and discharged. In the prior art, the battery unit comprises a battery cell unit, a circuit board and a battery cell support, wherein the circuit board is connected to the outer side of the battery cell support, the battery cell unit is arranged in the battery cell support, and the battery cell unit is electrically connected with the circuit board through electrode plates at two ends of the battery cell support.

The electrode plates in the prior art are generally directly adhered or screwed on the two side walls of the battery cell frame, namely, the outer surfaces of the electrode plates are higher than the outer side walls of the battery cell frame after the electrode plates are connected; the outside of the electrode plate is not provided with another protection structure, so that the collision between the shell and the electrode plate is easy to cause in the subsequent shell installation process, and the position of the electrode plate is loose, thereby influencing the service performance of the battery pack.

Disclosure of Invention

The utility model solves the problems that: at least one defect in the prior art is overcome, and the battery pack module is provided, and through optimizing the battery cell support structure, the electrode plate is not easy to collide when the shell is installed outside the battery pack module.

In order to solve the problems, the utility model provides a battery pack module, which comprises a battery cell support, a circuit board and a shell, wherein the circuit board is connected to the battery cell support and is electrically connected with a battery cell unit arranged in the battery cell support, a plurality of electrode plates are respectively arranged on two sides of the battery cell support, one end of each electrode plate is connected with the circuit board through an inserting sheet, the other end of each electrode plate is provided with a contact sheet for abutting against the positive electrode and the negative electrode of the battery cell unit, and the shell is arranged outside the battery cell support; a plurality of concave assembling grooves are respectively arranged on the outer walls of the two sides of the battery cell support, each electrode plate is respectively accommodated in the corresponding assembling groove, and the outer surface of each electrode plate is lower than the outer end face of the battery cell support.

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

in the battery pack module structure, the corresponding fitting grooves are formed in the outer walls of the two sides of the battery cell bracket and are used for installing the electrode plates, and the outer surfaces of the electrode plates are lower than the two side walls of the battery cell bracket after the electrode plates are installed; therefore, after the electrode plate is installed, when the shell is continuously installed outside the battery cell bracket, the electrode plate is not easy to be in direct contact with the shell, so that the effect of protecting the electrode plate is achieved, and the service life and the safety performance of the whole battery pack are ensured.

Further, a riveting convex column is arranged at the bottom of each assembling groove, and a riveting hole matched with the riveting convex column is formed in each electrode plate. In the structure, each electrode plate is connected and fixed in each assembling groove in a riveting mode, the structure is simple, the processing is convenient, and the structural stability of the electrode plate after riveting is high.

As an improvement, the electrode plate is provided with a reinforcing rib formed between the plug-in plate and the contact plate. In the improved structure, the structural strength of the electrode plate is effectively increased after the reinforcing ribs are arranged.

Still further, 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 battery cell unit, a first support and a second support, wherein the opposite sides of the first support and the second support are respectively provided with a containing groove for the two ends of the battery cell unit to be inserted and assembled, and the inner wall of each containing groove is provided with a limiting component for radially limiting the battery cell unit. In the improved structure, the limiting component used for radially limiting the telecommunication unit is arranged on the inner wall of the accommodating groove, so that the structure of the battery cell unit connected with the battery cell bracket is effectively improved, and abnormal sound is not easy to occur between the two components in the use process.

Still further, the spacing subassembly includes a plurality of circumference distributes and along the elastic limiting piece of axial extension, each elastic limiting piece's both ends butt respectively in the open end and the bottom of holding groove, and each elastic limiting piece's middle part is towards the central axis direction of holding groove is crooked. 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.

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 module according to the present utility model;

FIG. 2 is an enlarged schematic view of the structure of the portion X in FIG. 1;

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

fig. 4 is another angular partial exploded view of a partial structure of the battery pack module of fig. 1;

fig. 5 is a partial cross-sectional view of a cell mounting structure in accordance with the present utility model.

Reference numerals illustrate:

1. a cell holder; 2. a circuit board; 3. an electrode sheet; 4. a plug-in piece; 5. a contact piece; 6. a fitting groove; 7. riveting the convex column; 8. riveting holes; 9. reinforcing ribs; 10. a first bracket; 11. a second bracket; 13. a receiving groove; 14. an elastic limiting piece; 15. a first positioning half shaft; 16. the second positioning half shaft; 17. positioning the bulge; 18. a positioning groove; 19. a mounting groove; 20. a limit step; 21. and (5) inserting terminals.

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.

As shown in fig. 1 and 2, the utility model provides a battery pack module, 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 21 is also connected to the circuit board 2, and the power can be supplied to an electric tool through the plug-in terminal 21.

The battery cell support 1 is provided with a plurality of electrode slices 3 respectively in both sides, one end of each electrode slice 3 is connected with the circuit board 2 through the insertion piece 4, the other end of each electrode slice 3 is provided with a contact piece 5 for being in butt joint with the positive pole/negative pole of the battery cell unit, a plurality of concave fitting grooves 6 are respectively arranged on the outer walls of both sides of the battery cell support 1, each electrode slice 3 is respectively accommodated in the corresponding fitting groove 6, and the outer surface of each electrode slice 3 is lower than the outer end face of the battery cell support 1.

In this embodiment, more specifically, the bottom of each fitting groove 6 is provided with a riveting boss 7, and each electrode sheet 3 is provided with a riveting hole 8 for matching with the riveting boss 7.

On the other hand, the reinforcing ribs 9 are formed between the inserting piece 4 and the contact piece 5 on the electrode piece 3, so that the structural strength of the electrode piece 3 is effectively improved.

Specifically, as shown in fig. 3 and 4, the battery cell bracket 11 includes a first bracket 10 and a second bracket 11 that are oppositely arranged, and two ends of the first bracket 10 and the circuit board 2 are respectively connected to the first bracket 10 and the second bracket 11; the opposite sides of the second bracket 11 are respectively provided with accommodating grooves 13 for inserting and assembling the two ends of the battery cell unit, and the inner wall of each accommodating groove 13 is provided with a limiting component for radially limiting the battery cell unit; more specifically, a plurality of cylindrical accommodating grooves 13 are respectively arranged on one side of the first bracket 10 and the second bracket 11 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 13 on two sides, so that the structure is simple and the installation is convenient.

As shown in fig. 5, in the present embodiment, the limiting assembly includes a plurality of elastic limiting members 14 circumferentially distributed and extending along an axial direction, two ends of each elastic limiting member 14 respectively abut against an open end and a bottom end of the accommodating groove 13, and a middle portion of each elastic limiting member 14 is bent toward a central axis direction of the accommodating groove 13. When the end part of the battery cell is inserted into the accommodating groove 13, the middle part of each elastic limiting piece 14 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 14 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 13, and the corresponding gap is formed, so that the heat dissipation effect of the battery cell can be achieved. Preferably, in this embodiment, the elastic limiting member 14 is a long spring piece, so that the elastic deformation force is more stable, which is convenient for the insertion of the battery cell and can ensure that a stable radial clamping force is provided after the insertion.

In the above structure, the two ends of the elastic limiting member 14 are respectively abutted against the open end and the bottom end of the accommodating groove 13, specifically, a plurality of mounting grooves 19 corresponding to the elastic limiting member 14 are provided on the inner wall of the accommodating groove 13, one end of each groove extends axially to the bottom position of the accommodating groove 13, the other end extends toward the open end of the accommodating groove 13, but does not penetrate through the outer end surface of the accommodating groove 13, that is, a limiting step 20 is formed in the accommodating groove 13 near the open end thereof, when the elastic limiting member 14 is mounted, one end is abutted against the bottom of the accommodating groove 13, the other end is abutted against the limiting step 20, and the middle part of the elastic limiting member 14 is curved toward the central axis direction of the accommodating groove 13, as shown in fig. 5.

In the embodiment, a plurality of positioning pins are disposed on the outer walls of the first and second brackets 10 and 11 near the circuit board 2, and a plurality of positioning jacks are disposed on the circuit board 2 and are respectively and mutually inserted with the positioning pins.

In addition, a first positioning half shaft 15 is arranged on the upper surface of one end of the first bracket 10, a second positioning half shaft 16 is arranged on the upper surface of one end of the second bracket 11, and when the first bracket 10 and the second bracket 11 are relatively connected into a whole, the first positioning half shaft 15 and the second positioning half shaft 16 are combined into a complete cylindrical positioning column for inserting and positioning the shell outside the power supply core bracket 1. More specifically, in the above structure, the side of the first positioning half shaft 15 near the second positioning half shaft 16 is provided with the positioning protrusion 17, and the side of the second positioning half shaft 16 near the first positioning half shaft 15 is provided with the positioning groove 18 matched with the positioning protrusion 17, so that after the first bracket 10 and the second bracket 11 are connected in place, the first positioning half shaft 15 and the second positioning half shaft 16 can be assembled into a complete cylindrical positioning column more quickly and accurately.

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 module, includes electric core support (1), circuit board (2) and shell, circuit board (2) connect in on electric core support (1), and with install in electric core unit electricity in electric core support (1) is connected, the both sides of electric core support (1) set up a plurality of electrode pieces (3) respectively, each electrode piece (3)'s one end all is connected with circuit board (2) through insert piece (4), each electrode piece (3)'s the other end all is provided with and is used for with electric core unit's positive/negative pole butt contact piece (5), the shell is installed in the outside of electric core support (1), its characterized in that: a plurality of concave fitting grooves (6) are respectively arranged on the outer walls of the two sides of the battery cell support (1), each electrode plate (3) is respectively accommodated in the corresponding fitting groove (6), and the outer surface of each electrode plate (3) is lower than the outer end face of the battery cell support (1).

2. The battery pack module according to claim 1, wherein: the bottom of each fitting groove (6) is provided with a riveting convex column (7), and each electrode plate (3) is provided with a riveting hole (8) matched with the riveting convex column (7).

3. The battery pack module according to claim 1, wherein: reinforcing ribs (9) are formed between the plug-in connection pieces (4) and the contact pieces (5) on the electrode pieces (3).

4. The battery pack module according to claim 1, wherein: the battery cell bracket (1) comprises a first bracket (10) and a second bracket (11) which are oppositely arranged, and two ends of the circuit board (2) are respectively connected to the first bracket (10) and the second bracket (11); the battery cell is characterized in that one side, opposite to the first support (10) and the second support (11), is respectively provided with a containing groove (13) 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 (13).

5. The battery pack module according to claim 4, wherein: the limiting assembly comprises a plurality of elastic limiting pieces (14) which are circumferentially distributed and axially extend, two ends of each elastic limiting piece (14) are respectively abutted against the opening end and the bottom end of the accommodating groove (13), and the middle part of each elastic limiting piece (14) is bent towards the central axis direction of the accommodating groove (13).

6. The battery pack module according to claim 4 or 5, wherein: the upper surface of first support (10) one end is provided with first location semi-axis (15), the upper surface of second support (11) one end is provided with second location semi-axis (16), works as when first support (10), second support (11) are connected as an organic wholely relatively, first location semi-axis (15), second location semi-axis (16) become complete cylindrical reference column, are used for supplying the outside casing cartridge location of electric core support (1).

7. The battery pack module according to claim 6, wherein: one side of the first positioning half shaft (15) close to the second positioning half shaft (16) is provided with a positioning protrusion (17), and one side of the second positioning half shaft (16) close to the first positioning half shaft (15) is provided with a positioning groove (18) matched with the positioning protrusion (17).