CN218242043U

CN218242043U - Battery pack

Info

Publication number: CN218242043U
Application number: CN202122036124.3U
Authority: CN
Inventors: 霍立祥
Original assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Current assignee: Jiangsu Dongcheng Tools Technology Co Ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2023-01-06
Anticipated expiration: 2031-08-26

Abstract

A battery pack comprises a shell and a battery component positioned in the shell. The battery pack comprises two or more single-row electric core groups, the two or more single-row electric core groups are vertically stacked and arranged, and each single-row electric core group comprises a plurality of electric cores extending along the longitudinal direction and electric core supports connected to the two longitudinal ends of the electric cores. The structure of each battery cell support is the same and is provided with a first surface and a second surface which are vertically arranged oppositely, a protruding part which protrudes outwards from the first surface vertically and a groove which is recessed inwards from the second surface vertically, and the protruding part of one of two adjacent single-row battery cell groups is buckled in the groove of the other one. Due to the modular design of the battery cell support, the single-row battery cell groups form standardized battery modules, the structure assembly and the free combination can be carried out as required, and the battery packs with different sizes can be formed by mutually stacking and flexibly assembling the single-row battery cell groups; therefore, the types of the cell supports required by the battery packs with different sizes are reduced.

Description

Battery pack

[ technical field ]

The utility model relates to an electric tool technical field, in particular to a battery package for hand-held type electric tool.

[ background art ]

The battery pack is widely applied to various electric equipment, and comprises a plurality of battery cores which are fixed together through a battery core bracket. The electric core support of current battery package all is fixed size's support basically, when electric core arranges fixedly, if want to increase or reduce the parallelly connected number of electric core, can only use not unidimensional support, perhaps avoid the position of unnecessary electric core. In the scheme of replacing the bracket, a new mold needs to be additionally developed, so that the mold cost is additionally increased; the scheme that the support avoids limits the space and the appearance of the battery pack on the premise that the size of the support is invariable, and the cost of the battery pack shell can be increased by the avoided support.

Accordingly, there is a need for an improved battery pack that overcomes the deficiencies of the prior art.

[ contents of utility model ]

To the deficiency of the prior art, an object of the utility model is to provide a battery package with electric core support, this electric core support is modular design for ensure general adaptation in not unidimensional battery package.

The utility model provides a technical scheme that prior art problem adopted is: a battery pack comprises a shell and a battery assembly positioned in the shell. The battery pack comprises two or more single-row electric core groups, the two or more single-row electric core groups are vertically stacked and arranged, and each single-row electric core group comprises a plurality of electric cores vertically extending along a vertical direction perpendicular to the electric cores and electric core supports connected to the vertical two ends of the electric cores. The structure of each battery cell support in the battery assembly is the same, each battery cell support is provided with a first surface and a second surface which are vertically arranged oppositely, a protruding part which protrudes outwards from the first surface along the vertical direction and a groove which is recessed inwards from the second surface along the vertical direction, and the protruding part of one single-row battery core group in two adjacent single-row battery core groups is buckled in the groove of the other single-row battery core group.

The further improvement scheme is as follows: the first surface with the second surface all is the arc setting, along vertical observation, the cross sectional shape of first surface with the cross sectional shape of second surface is the same, two adjacent in the single row of electric core group one the first surface of single row of electric core group closely laminate in another the second surface of single row of electric core group.

The further improvement scheme is as follows: the convex part is a dovetail-shaped protrusion, the groove is a dovetail groove, and the shape of the convex part is the same as that of the inner wall of the groove.

The further improvement scheme is as follows: several electric core is arranged into one row and is the arc setting along vertical and fore-and-aft horizontal of perpendicular to, and every two adjacent electric cores all are centrosymmetric setting.

The further improvement scheme is as follows: the battery cell support is provided with a plurality of mounting grooves between the first surface and the second surface, and the mounting grooves at least penetrate through one longitudinal end face of the battery cell support and accommodate one longitudinal end of the battery cell.

The further improvement scheme is as follows: the battery pack comprises at least two battery components, and the at least two battery components are arranged in the shell along the longitudinal direction or the transverse direction.

The further improvement scheme is as follows: the casing includes first casing and the second casing of mutual lock, first casing with the second casing is mutually supported and is formed the holding chamber, battery pack hold in the holding intracavity.

The further improvement scheme is as follows: the battery pack comprises a button positioned on the first shell and a light source positioned in the first shell, the button is made of a light-transmitting material and is arranged close to the light source, and light emitted by the light source is emitted out of the first shell from the button.

The further improvement scheme is as follows: the second shell is provided with two vertical wall surfaces which are oppositely arranged, the two wall surfaces are respectively provided with an air inlet and an air outlet, and the battery assembly is positioned between the air inlet and the air outlet.

The further improvement scheme is as follows: the battery pack is used for being connected to a handheld electric tool.

Compared with the prior art, the utility model discloses following beneficial effect has: the structure of every electric core support among the battery pack is the same, just the electric core support is equipped with relative first surface and the second surface that sets up in vertical, along the bellying of vertical outside protruding stretching and along the vertical inside sunken recess of second surface from the first surface, and the bellying of a single row electric core group is detained and is held in the recess of another single row electric core group in two adjacent single row electric core groups. Due to the modular design of the battery core support, the single-row battery core groups form a standardized battery module, the structure assembly and the free combination can be carried out as required, and the battery packs with different sizes can be formed by mutually stacking and flexibly assembling the single-row battery core groups; therefore, the types of the cell supports required by the battery packs with different sizes are reduced. Meanwhile, the number of the cell supports can be adjusted according to the number of the single-row cell groups, and the cell supports can be combined according to the number of the single-row cell groups; therefore, the cost of the battery fixing structure is reduced, and the waste of internal space resources of the battery pack is reduced.

[ description of the drawings ]

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a perspective view of a battery pack according to a preferred embodiment of the present invention;

fig. 2 is a perspective view of a battery pack in the battery pack shown in fig. 1;

FIG. 3 is a partially exploded view of the battery assembly shown in FIG. 2;

FIG. 4 is an exploded view of a single row of electric core packs in the battery assembly of FIG. 2;

fig. 5 is a front view of the cell holders in the single-row cell pack shown in fig. 4.

The meaning of the reference symbols in the figures:

100. battery pack 10, housing 11, first housing 12, second housing 121, air inlet 13, button 20, battery assembly 21, single-row battery core group 30, battery core 40, battery core support 41, first surface 42, second surface 43, protruding part 44, groove 45, and mounting groove

[ detailed description of the invention ]

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Words such as "upper," "lower," "front," "rear," and the like, which indicate orientation or positional relationships, are used solely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the referenced devices/elements must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Referring to fig. 1 to 5, a battery pack 100 according to a preferred embodiment of the present invention is shown, wherein the battery pack 100 is generally used for connecting to a power tool, especially a hand-held power tool (not shown). The battery pack 100 includes a case 10 made of plastic and a battery assembly 20 located in the case 10. In the present embodiment, the battery pack 100 includes at least two battery assemblies 20, and the at least two battery assemblies 20 are arranged in the housing 10 along the longitudinal direction or the transverse direction.

The housing 10 includes a first housing 11 and a second housing 12 that are fastened to each other, the first housing 11 and the second housing 12 cooperate with each other to form an accommodating cavity (not shown), and the battery assembly 20 is accommodated in the accommodating cavity. The battery pack 100 includes a button 13 on the first casing 11 and a light source (not shown) inside the first casing 11, the button 13 is made of a light-transmitting material and is disposed adjacent to the light source, and light emitted from the light source is emitted out of the first casing 11 from the button 13 to display the current power of the battery pack 100 on the button 13. Meanwhile, the second housing 12 is provided with two walls which are vertically arranged oppositely, the two walls are respectively provided with an air inlet 121 and an air outlet (not shown), and the battery assembly 20 is located between the air inlet 121 and the air outlet, so that the battery assembly 20 has a better heat dissipation effect.

Referring to fig. 2 to 4, the battery assembly 20 includes two or more single-row electric core assemblies 21, and the two or more single-row electric core assemblies 21 are vertically stacked, in this embodiment, the battery assembly 20 includes only two single-row electric core assemblies 21. Every single-row electric core group 21 all includes along the vertical longitudinal extension's of perpendicular to several electric core 30 and connects in the electric core support 40 at the vertical both ends of electric core 30, and several electric core 30 is arranged into one row and is the arc setting along the vertical and fore-and-aft horizontal of perpendicular to, and every two adjacent electric cores 30 all are the central symmetry setting.

As shown in fig. 5, each cell support 40 in the battery assembly 20 has the same structure, and the cell support 40 is provided with a first surface 41 and a second surface 42 which are vertically opposite to each other, a protrusion 43 which protrudes vertically outward from the first surface 41, a groove 44 which is recessed vertically inward from the second surface 42, and a plurality of mounting grooves 45 which are located between the first surface 41 and the second surface 42. The mounting groove 45 at least penetrates through one longitudinal end surface of the cell support 40 and accommodates one longitudinal end of the cell 30, so as to fix a plurality of cells 30 to form a stable single-row cell group 21.

The convex part 43 of one single-row electric core group 21 in two adjacent single-row electric core groups 21 in the battery assembly 20 is buckled in the groove 44 of the other single-row electric core group 21. Specifically, the first surface 41 and the second surface 42 are both arc-shaped, and the cross-sectional shape of the first surface 41 is the same as that of the second surface 42 when viewed in the longitudinal direction, that is, the first surface 41 of one single-row electric core assembly 21 in two adjacent single-row electric core assemblies 21 can be closely attached to the second surface 42 of the other single-row electric core assembly 21.

In this embodiment, the protruding portion 43 is a dovetail-shaped protrusion, the groove 44 is a dovetail groove, and the shape of the protruding portion 43 is the same as that of the inner wall of the groove 44, that is, the stable connection between two adjacent single-row electric core assemblies 21 when stacked is ensured. In other embodiments, the protrusions 43 and the grooves 44 can also be other structures that cooperate with each other to achieve stable connection when two adjacent single-row electric core assemblies 21 are stacked.

The utility model discloses in, every electric core support 40 among battery pack 20 is the same in structure, just electric core support 40 is equipped with vertical relative first surface 41 and the second surface 42 that sets up, along the vertical bellying 43 that stretches out and follow vertical inside sunken recess 44 from second surface 42 from first surface 41, and the bellying 43 of a single-row electric core group 21 is detained and is held in the recess 44 of another single-row electric core group 21 in two adjacent single-row electric core groups 21. Due to the modular design of the battery cell support 40, the single-row electric core groups 21 form a standardized battery module, the structure assembly and the free combination can be carried out as required, and the battery packs 100 with different sizes can be formed by mutually stacking and flexibly assembling the single-row electric core groups 21; thereby reducing the variety of cell holders 40 required for different sized battery packs 100. Meanwhile, the number of the cell supports 40 can be adjusted according to the number of the required single-row cell groups 21, and the required number of the single-row cell groups 21 can be combined with the number of the cell supports 40; thereby reducing the cost of the battery fixing structure and reducing the waste of space resources inside the battery pack 100.

The present invention is not limited to the above-described embodiments. It will be readily appreciated by those skilled in the art that many alternatives to the battery pack may be made without departing from the spirit and scope of the invention. The protection scope of the present invention is subject to the content of the claims.

Claims

1. A battery pack comprises a shell and a battery component positioned in the shell; the method is characterized in that: the battery pack comprises two or more single-row electric core groups, the two or more single-row electric core groups are vertically stacked and arranged, each single-row electric core group comprises a plurality of electric cores vertically extending along a vertical direction perpendicular to the electric cores and electric core supports connected to the two vertical ends of the electric cores, each electric core support in the battery pack is identical in structure and is provided with a first surface and a second surface which are vertically and oppositely arranged, a protruding portion protruding outwards vertically from the first surface and a groove recessed inwards vertically from the second surface, and the protruding portion of each single-row electric core group is buckled in the groove of each single-row electric core group.

2. The battery pack according to claim 1, wherein: the first surface with the second surface all is the arc setting, along vertical observation, the cross sectional shape of first surface with the cross sectional shape of second surface is the same, two adjacent in the single row of electric core group one the first surface of single row of electric core group closely laminate in another the second surface of single row of electric core group.

3. The battery pack according to claim 2, wherein: the convex part is a dovetail-shaped protrusion, the groove is a dovetail groove, and the shape of the convex part is the same as that of the inner wall of the groove.

4. The battery pack according to claim 2, wherein: several electric core is arranged into one row and is the arc setting along vertical and fore-and-aft horizontal of perpendicular to, and every two adjacent electric cores all are centrosymmetric setting.

5. The battery pack according to claim 4, wherein: the battery cell support is provided with a plurality of mounting grooves between the first surface and the second surface, and the mounting grooves at least penetrate through one longitudinal end face of the battery cell support and accommodate one longitudinal end of the battery cell.

6. The battery pack according to claim 1, wherein: the battery pack comprises at least two battery components, and the at least two battery components are arranged in the shell along the longitudinal direction or the transverse direction.

7. The battery pack according to claim 1, wherein: the casing includes first casing and the second casing of mutual lock, first casing with the second casing is mutually supported and is formed the holding chamber, battery pack hold in the holding intracavity.

8. The battery pack according to claim 7, wherein: the battery pack comprises a button positioned on the first shell and a light source positioned in the first shell, the button is made of a light-transmitting material and is arranged close to the light source, and light emitted by the light source is emitted out of the first shell from the button.

9. The battery pack according to claim 7, wherein: the second shell is provided with two vertical wall surfaces which are oppositely arranged, the two wall surfaces are respectively provided with an air inlet and an air outlet, and the battery assembly is positioned between the air inlet and the air outlet.

10. The battery pack according to claim 1, wherein: the battery pack is used for being connected to a handheld electric tool.