CN218274820U

CN218274820U - Battery pack

Info

Publication number: CN218274820U
Application number: CN202222179589.9U
Authority: CN
Inventors: 丁鑫
Original assignee: Nanjing Jiuchi Electromechanical Industry Co ltd
Current assignee: Nanjing Jiuchi Electromechanical Industry Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2023-01-10
Anticipated expiration: 2032-08-18

Abstract

The utility model relates to a battery pack belongs to battery power supply technical field. The battery pack comprises a control circuit board arranged on a support, at least two rows of battery units and a connecting piece group for respectively realizing the electrical connection of the ends of the battery units; the connecting sheet group comprises at least two end connecting sheets and corner connecting sheets, the end connecting sheets are in the same shape, each end connecting sheet is provided with a bridging arm for connecting adjacent battery units in series or in parallel, the middle part of each bridging arm extends out of a leading arm electrically connected with the corresponding detection end of the control circuit board, and the corner connecting sheets are used for electrically connecting each row of end battery units with the corresponding external connection end or internal connection end of the control circuit board. The shapes of the main connecting pieces on the two sides of the battery pack are the same, so that the manufacturing and assembling manufacturability of the battery pack are obviously improved, and the connecting pieces with the same shapes enable the width of the extended leading arm to be as wide as possible, so that the battery pack has good strength and is beneficial to ensuring the quality of the battery pack.

Description

Battery pack

Technical Field

The utility model relates to a group battery that battery unit constitutes, especially a battery package belong to battery power supply technical field.

Background

The battery pack is a commonly-equipped power supply device for portable electric tools and the like at present, and a typical structure thereof is disclosed in chinese patent document No. 202080068240.9, and the battery pack is provided with a battery unit; a control substrate disposed above the battery cells and connected to the battery cells; a plurality of terminals provided on the control board and arranged in a left-right direction; a plurality of partition walls provided on the control substrate; and an outer case that houses the battery unit, the control board, the plurality of terminals, and the plurality of partition walls, and that has a terminal receiving portion on an upper surface thereof that receives the terminal of the electric power tool. The plurality of terminals include a first terminal and a second terminal adjacent to the first terminal in a left-right direction. At least two partition walls are provided between the first terminal and the second terminal.

The connection sheets (also called reeds) at the end parts are used for realizing the electric connection required by the regular arrangement of the battery units of the battery pack, the detection end of the control circuit board and the output of the battery pack, although the electric connection mode adopted by the existing battery pack is a common electric connection mode, the connection sheets of the existing battery pack are irregular in shape and poor in strength, various specifications are required, and particularly, different connection sheets are required to be respectively adopted at the two ends, so that the manufacturability is poor no matter the battery pack is manufactured or assembled.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in view of the above-mentioned shortcomings of the prior art, a battery pack with a connecting piece having good strength and versatility is provided through structural improvement, thereby contributing to ensuring the quality of the battery pack and improving the manufacturability of manufacturing and assembling the battery pack.

In order to achieve the above purposes, the basic technical scheme of the battery pack of the present invention is that the battery pack comprises a control circuit board arranged on a support, at least two rows of battery units, and a connecting sheet group for respectively realizing the electrical connection of the battery unit ends;

the connecting sheet set comprises at least two end connecting sheets and corner connecting sheets which are in the same shape, each end connecting sheet is provided with a bridging arm which connects adjacent battery units in series or in parallel, the middle part of each bridging arm extends out of a leading arm which is electrically connected with the corresponding detection end of the control circuit board, and each corner connecting sheet is used for electrically connecting each row of end battery units with the corresponding external connection end or internal connection end of the control circuit board.

Therefore, the electric output connection and the detection connection of the battery units after being connected in series or in parallel can be realized, the shapes of the main connecting sheets on the two sides of the battery pack are the same, so that the manufacturing and assembling manufacturability of the battery pack are remarkably improved, and the connecting sheets with the same shapes enable the width of the extending leading arm to be as wide as possible, so that the battery pack has good strength and is beneficial to ensuring the quality of the battery pack.

The utility model discloses further perfect is: the bracket is formed by oppositely inserting a first side frame and a second side frame for arranging two rows of battery units.

The utility model discloses further perfect is: the end face of the bracket is provided with connecting piece embedding grooves, and an isolation flange is formed between adjacent embedding grooves.

The utility model discloses further perfect again is: the connecting sheet group comprises at least four end connecting sheets with the same shape, a first corner connecting sheet and a second corner connecting sheet; the end connecting sheet is Y-shaped and is provided with a direct-connected bridge arm for connecting adjacent battery units in series, and the middle part of the bridge arm extends out of a leading arm which is electrically connected with the corresponding detection end of the control circuit board.

The utility model discloses still further perfect is: the connecting sheet set comprises at least two end connecting sheets with the same shape and a first corner connecting sheet; the end connecting sheet is X-shaped and is provided with a forked bridging arm which connects adjacent battery units in parallel, and the middle part of the forked bridging arm extends out of a leading arm which is electrically connected with the corresponding detection end of the control circuit board.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic perspective exploded view of the embodiment of fig. 1.

Fig. 3 is one of the circuit schematics of the embodiment of fig. 2.

Fig. 4 is a second circuit schematic of the embodiment of fig. 2.

Fig. 5 is a schematic perspective exploded view of a second embodiment of the present invention.

Fig. 6 is a circuit schematic of the embodiment of fig. 5.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

Example one

In the battery pack of the present embodiment, as shown in fig. 1 and 2, the bracket for accommodating two rows of battery units 2 is formed by inserting the first side frame 1 and the second side frame 1' relatively, and the control circuit board 6 containing the battery unit power detection circuit is fixed on the top of the bracket. The positive and negative electrodes of the cells 2 in the same row are arranged at intervals. The two sides of the bracket are respectively provided with a connecting piece group opposite to the ends of the battery unit 2, and each connecting piece group comprises four end connecting pieces 3 with the same shape, a first corner connecting piece 4 and a second corner connecting piece 5. The end face of the support is provided with connecting piece embedding grooves, and an isolating flange is formed between adjacent embedding grooves, so that adjacent connecting pieces are effectively prevented from being short-circuited.

The end connecting sheet 3 is Y-shaped and is provided with a direct-connection type bridging arm 3-1 for connecting adjacent battery units in series, and a leading arm 3-2 electrically connected with a corresponding detection end of the control circuit board 6 extends out of the middle part of the bridging arm 3-1.

When the first corner connecting piece 4 and the second corner connecting piece 5 on the two sides are respectively used for connecting each row of end battery units 2 with the corresponding external connection ends B1+, B1-and B2+, B2-of the control circuit board 6, the battery pack which can select a 20V/40V power supply as required and is shown in FIG. 3 can be formed.

When the first corner connecting piece 4 at one side and the second corner connecting piece 5 at the other side are electrically connected with the corresponding internal connection end of the control circuit board 6, and the other two corner connecting pieces are connected with the corresponding external connection end B +, B-of the control circuit board 6, the battery pack with 40V serial power supplies shown in figure 4 can be formed.

This embodiment is under the prerequisite of guaranteeing electric clearance between the connection piece, and connection piece approach bridge arm width is obviously greater than prior art, therefore intensity is showing and is improving, has effectively avoided the vibration fatigue fracture in the use, and is connected with the wire and compares, can improve production efficiency greatly, and the connection piece specification is few, and production and assembly manufacturability are all good.

Example two

The battery pack of this embodiment is shown in fig. 5, and the basic structure is the same as that of the embodiment except that each connecting plate group includes two end connecting plates 3 with the same shape and a first corner connecting plate 4.

The end connecting sheet 3 is X-shaped and is provided with a forked bridging arm 3-1 for connecting adjacent battery units in parallel, and the middle part of the bridging arm 3-1 extends out of a leading arm 3-2 which is electrically connected with the corresponding detection end of the control circuit board 6.

The first corner connecting pieces 4 on both sides are used for connecting the end battery units 2 in each row with the corresponding external connection terminals B +, B-of the control circuit board 6, respectively, so as to form a battery pack with 20V two strings of power supplies as shown in fig. 6.

The beneficial effects are the same as those of the first embodiment, and are not further described.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. A battery pack comprises a control circuit board arranged on a support, at least two rows of battery units and connecting piece groups for respectively realizing the electrical connection of the ends of the battery units; the method is characterized in that:

2. The battery pack according to claim 1, wherein: the bracket is formed by oppositely inserting a first side frame and a second side frame for arranging two rows of battery units.

3. The battery pack according to claim 2, wherein: the end face of the bracket is provided with connecting piece embedding grooves, and an isolation flange is formed between adjacent embedding grooves.

4. The battery pack according to claim 1, 2 or 3, wherein: the connecting sheet group comprises at least four end connecting sheets with the same shape, a first corner connecting sheet and a second corner connecting sheet; the end connecting sheet is Y-shaped and is provided with a direct-connected bridge arm for connecting adjacent battery units in series, and the middle part of the bridge arm extends out of a leading arm which is electrically connected with the corresponding detection end of the control circuit board.

5. The battery pack according to claim 1, 2 or 3, wherein: the connecting sheet group comprises at least two end connecting sheets with the same shape and a first corner connecting sheet; the end connecting sheet is X-shaped and is provided with a forked bridging arm which connects adjacent battery units in parallel, and the middle part of the forked bridging arm extends out of a leading arm which is electrically connected with the corresponding detection end of the control circuit board.