CN217719800U

CN217719800U - Battery pack

Info

Publication number: CN217719800U
Application number: CN202220464998.0U
Authority: CN
Inventors: 胡志春; 郑习易; 刘高翔; 李勤; 刘光源; 董卫平
Original assignee: Zhejiang Kaichuang Electric Co ltd
Current assignee: Zhejiang Kaichuang Electric Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-11-01
Anticipated expiration: 2032-03-03

Abstract

The utility model relates to a battery pack, which belongs to the technical field of lithium batteries and comprises an electric core bracket, a PCB mainboard, an electric core group and a battery pack connecting seat, wherein the PCB mainboard is arranged on the electric core bracket; the electric core group is arranged in the electric core bracket, the electric core group comprises a first electric core group and a second electric core group, and the positive pole and the negative pole of the first electric core group and the second electric core group are electrically connected with the PCB main board; the battery pack connecting seat is installed on the PCB mainboard, and a plug-in terminal assembly is arranged on the battery pack connecting seat and is electrically connected with the PCB mainboard. The utility model discloses have and solve single battery package and can only export a voltage, the effect of economic nature low energy-concerving and environment-protective problem again.

Description

Battery pack

Technical Field

The utility model belongs to the technical field of the lithium cell technique and specifically relates to a battery pack is related to.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

The electric tool industry belongs to the advanced equipment manufacturing industry, and is generally applied to the advanced equipment manufacturing industry fields of aerospace, high-speed rail construction, ship manufacturing, automobile industry and the like and the production fields of building roads, decoration, wood industry processing, metal processing and the like. Particularly, in the field of industrial electric tools, the electric tool is one of application tools, plays an indispensable role in industrial development and construction, and in the field of domestic electric tools, the electric tool also provides assistance for improving the life style and the life quality of people, so that the electric tool is a very important link in the normal economic operation of a country.

However, the power tool of different power levels is required for the tool limited to different working occasions, so that the battery pack of different voltage needs to be designed for different power tools. In use, a battery package can only export a voltage, a adaptation electric tool, and the consumer need purchase different tool holder battery package, just can satisfy the work needs, not only can consume a large amount of money and storage space like this, still can increase electronic waste.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving at least that a single battery package can only output a voltage, and the economic nature is low and problem energy-concerving and environment-protective again. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a battery pack, include:

a battery cell bracket;

the PCB mainboard is arranged on the battery cell bracket;

the battery cell group is arranged in the battery cell bracket and comprises a first battery cell group and a second battery cell group, and the positive electrodes and the negative electrodes of the first battery cell group and the second battery cell group are electrically connected with the PCB main board;

the battery pack connecting seat is installed on the PCB mainboard, and is provided with a plug-in terminal assembly which is electrically connected with the PCB mainboard.

According to the battery pack of the utility model, the first electric core group and the second electric core group are installed in the electric core bracket by installing the PCB main board on the electric core bracket, and the first electric core group and the second electric core group are electrically connected with the PCB main board to supply power to the PCB main board; meanwhile, the battery pack connecting seat with the plug-in terminal assembly is installed on the PCB mainboard, when the battery pack connecting seat is used, the host connecting sheet on the electric tool is plugged with the plug-in terminal assembly to supply power for the battery pack, meanwhile, the plug-in connection of different modes between the electric tool and the plug-in terminal assembly is controlled, so that the first battery cell group and the second battery cell group are controlled to be connected in parallel or in series, different voltages can be output by a single battery pack, and the problems that the single battery pack can only output one voltage, the economy is low, and energy is not saved and the environment is not protected are solved.

In addition, according to the utility model discloses a battery package still can have following additional technical characterstic:

in some embodiments of the present invention, the first battery cell group includes a plurality of first batteries connected in series in sequence, and the second battery cell group includes a plurality of second batteries connected in series in sequence.

In some embodiments of the present invention, a plurality of the first batteries are connected by a first battery cell connecting sheet, and the first battery cell group is connected to the PCB main board by the first battery cell connecting sheet; the multiple sections of second batteries are connected through a second battery cell connecting sheet, and the second battery cell group is connected with the PCB mainboard through the second battery cell connecting sheet.

In some embodiments of the present invention, the buckle terminal assembly includes a first positive terminal, a first negative terminal, a second positive terminal and a second negative terminal, the first positive terminal, the first negative terminal, the second positive terminal and the second negative terminal are all electrically connected to the PCB main board.

In some embodiments of the present invention, the first positive terminal is connected to the positive electrode of the first cell group through the PCB main board, and the first negative terminal is connected to the negative electrode of the first cell group through the PCB main board; the second positive terminal passes through the PCB mainboard with the anodal of second electric core group is connected, the second negative terminal passes through the PCB mainboard with the negative pole of second electric core group is connected.

The utility model discloses an in some embodiments, the battery package still includes the temperature detection line, the one end of temperature detection line with the electric core group is connected, the other end of temperature detection line with PCB mainboard electricity is connected.

In some embodiments of the present invention, the temperature detection lines include a first temperature detection line and a second temperature detection line, one end of the first temperature detection line is connected to the first cell group, and the other end of the first temperature detection line is electrically connected to the PCB main board; one end of the second temperature detection line is connected with the second electric core group, and the other end of the second temperature detection line is electrically connected with the PCB main board.

In some embodiments of the present invention, the buckle terminal assembly further includes a temperature detection terminal and an ID communication terminal, the temperature detection terminal and the ID communication terminal all connect with the PCB main board electrically, and the temperature detection terminal passes through the PCB main board connects with the temperature detection line.

In some embodiments of the present invention, the buckle terminal assembly further comprises a charging terminal electrically connected to the PCB main board.

The utility model discloses an in some embodiments, the outside of electricity core support still is provided with the battery indicator board, the battery indicator board with PCB mainboard electricity is connected.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 is a schematic view of the overall structure of a battery pack;

fig. 2 is a schematic view illustrating a structure of a battery pack in another direction;

fig. 3 is a schematic diagram of the electrical principle of the battery pack when connected to different electric tools.

Reference numerals are as follows:

1. a battery cell bracket; 2. a PCB main board; 3. the electric core group; 30. a first electric core group; 300. a first battery; 301. a first cell connecting sheet; 31. a second electric core group; 310. a second battery; 311. a second cell connecting sheet; 4. a battery pack connecting seat; 40. a first positive terminal; 41. a first negative terminal; 42. a second positive terminal; 43. a second negative terminal; 44. a temperature detection terminal; 45. an ID communication terminal; 46. a charging terminal; 5. a temperature detection line; 50. a first temperature detection line; 51. a second temperature detection line; 6. electric quantity indicating board.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "in 8230 \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 3, the battery pack of the present embodiment includes:

a battery cell bracket 1;

the PCB mainboard 2 and the PCB mainboard 2 are arranged on the battery cell bracket 1;

the electric core group 3 is arranged in the electric core bracket 1, the electric core group 3 comprises a first electric core group 30 and a second electric core group 31, and the positive poles and the negative poles of the first electric core group 30 and the second electric core group 31 are electrically connected with the PCB mainboard 2;

the battery pack connecting seat 4 is installed on the PCB mainboard 2, and the battery pack connecting seat 4 is provided with a plug-in terminal component which is electrically connected with the PCB mainboard 2.

Specifically, be formed with in the electric core support 1 and hold the chamber, first electric core group 30 and second electric core group 31 are installed and are being held the intracavity and fixed, PCB mainboard 2 is installed at the top of electric core support 1 and is fixed, connected mode between first electric core group 30 and the second electric core group 31 defaults to parallelly connected, the positive pole and the negative pole at the both ends of first electric core group 30 are connected with PCB mainboard 2 electricity respectively, the positive pole and the negative pole at the both ends of second electric core group 31 also are connected with PCB mainboard 2 electricity respectively, thereby two sets of electric core groups 3 all form the electric current return circuit with PCB mainboard 2. The battery pack connecting seat 4 is installed on the surface of the PCB main board 2 and fixed, and the latch terminal assembly on the battery pack connecting seat 4 is electrically connected to the PCB main board 2 to output voltage to the outside.

According to the battery pack of the utility model, the first electric core group 30 and the second electric core group 31 are installed in the electric core bracket 1 by installing the PCB mainboard 2 on the electric core bracket 1, and the first electric core group 30 and the second electric core group 31 are electrically connected with the PCB mainboard 2 to supply power to the PCB mainboard 2; meanwhile, a battery pack connecting seat 4 with a plug-in terminal assembly is installed on the PCB mainboard 2, and when the battery pack connecting seat is used, a host connecting sheet on the electric tool is plugged with the plug-in terminal assembly to form a voltage output passage so as to realize power supply of the battery pack. Meanwhile, the first electric core group 30 and the second electric core group 31 are controlled to be connected in parallel or in series by controlling different modes of insertion between the host connecting sheet and the insertion terminal assembly, so that different voltages can be output by a single battery pack, and the problems that the single battery pack can only output one voltage, is low in economy and is not energy-saving and environment-friendly are solved.

In some embodiments of the present invention, the first electric core set 30 includes a plurality of first batteries 300 connected in series in sequence, and the second electric core set 31 includes a plurality of second batteries 310 connected in series in sequence.

Further, the plurality of first batteries 300 are connected through a first battery cell connecting sheet 301, and the first battery cell group 30 is connected with the PCB main board 2 through the first battery cell connecting sheet 301; the plurality of second batteries 310 are connected through a second cell connecting sheet 311, and the second cell group 31 is connected with the PCB main board 2 through the second cell connecting sheet 311.

Specifically, in the present embodiment, the first electric core assembly 30 includes 5 first batteries 300, each of the first batteries 300 has the same rated voltage, and the 5 first batteries 300 are connected in series to form the first electric core assembly 30. The second electric core group 31 comprises 5 second batteries 310, each second battery 310 has the same rated voltage, and the 5 second batteries 310 are sequentially connected in series to form the second electric core group 31.

Each first battery 300 in the first battery pack 30 is connected in series through a first battery connecting sheet 301 to form a first positive output unit and a first negative output unit, and the first positive output unit and the first negative output unit are respectively electrically connected with the PCB main board 2. Similarly, each second battery 310 in the second battery cell group 31 is connected in series through the second battery cell connecting sheet 311 to form a second positive output unit and a second negative output unit, and the second positive output unit and the second negative output unit are respectively electrically connected to the PCB motherboard 2. The positive negative pole output of first electric core group 30 and second electric core group 31 is connected with PCB mainboard 2 electricity respectively, forms the electric current return circuit, gives PCB mainboard 2 power supply, and first electric core group 30 and second electric core group 31 do not influence each other in the use, and it is more convenient to use, improves the reliability of device.

In some embodiments of the present invention, the buckle terminal assembly includes a first positive terminal 40, a first negative terminal 41, a second positive terminal 42 and a second negative terminal 43, and the first positive terminal 40, the first negative terminal 41, the second positive terminal 42 and the second negative terminal 43 are all electrically connected to the PCB main board 2.

Further, the first positive terminal 40 is connected with the positive electrode of the first electric core group 30 through the PCB main board 2, and the first negative terminal 41 is connected with the negative electrode of the first electric core group 30 through the PCB main board 2; the second positive terminal 42 is connected with the positive electrode of the second cell group 31 through the PCB main board 2, and the second negative terminal 43 is connected with the negative electrode of the second cell group 31 through the PCB main board 2.

Specifically, in this embodiment, there is one first positive terminal 40, one first negative terminal 41, one second positive terminal 42, and one second negative terminal 43, one end of the first positive terminal 40, one end of the first negative terminal 41, one end of the second positive terminal 42, and one end of the second negative terminal 43 are located inside the battery pack connecting seat 4 and electrically connected to the PCB main board 2, and the other end of the first positive terminal is opened outward for inserting a host connecting sheet of the electric power tool. Wherein, the first positive terminal 40 and the first negative terminal 41 are electrically connected with the first positive output unit and the first negative output unit of the first cell group 30, respectively, and the second positive terminal 42 and the second negative terminal 43 are electrically connected with the second positive output unit and the second negative output unit of the second cell group 31, respectively.

In the practical use process, the first electric core group 30 and the second electric core group 31 are connected in parallel, that is, the first positive terminal 40 and the second positive terminal 42 are connected through the main machine connecting sheet, and the first negative terminal 41 and the second negative terminal 43 are connected at the same time, at this time, the first electric core group 30 and the second electric core group 31 are connected in parallel, and the battery pack outputs a first voltage value. Or establish ties first electric core group 30 and second electric core group 31, be about to second positive terminal 42 and first negative terminal 41 connection, first electric core group 30 and second electric core group 31 form the series connection this moment, and the battery package outputs the second magnitude of voltage, and then has realized that single battery package can output different voltages, provides the instrument of different demands and uses to realize economic nature, energy-concerving and environment-protective nature.

Furthermore, the inserting and buckling terminal assembly is detachably assembled and fixed on the battery pack connecting seat 4. Because the insert-buckle terminal assembly is easy to wear after sliding friction for many times, the electrical connection stability between the insert-buckle terminal assembly and the host connecting sheet of the electric tool is poor, the insert-buckle terminal assembly is designed to be detachable, the insert-buckle terminal assembly can be directly replaced after the insert-buckle terminal assembly is worn, the whole battery pack connecting seat 4 does not need to be replaced, the cost is reduced, and the economical efficiency is improved.

The utility model discloses an in some embodiments, the battery package still includes temperature detection line 5, and temperature detection line 5's one end is connected with electric core group 3, and temperature detection line 5's the other end is connected with 2 electricity of PCB mainboard.

Further, the temperature detection lines 5 comprise a first temperature detection line 50 and a second temperature detection line 51, one end of the first temperature detection line 50 is connected with the first electric core group 30, and the other end of the first temperature detection line 50 is electrically connected with the PCB main board 2; one end of the second temperature detection line 51 is connected to the second electric core group 31, and the other end of the second temperature detection line 51 is electrically connected to the PCB main board 2.

Specifically, two temperature detection lines 5 are provided, namely a first temperature detection line 50 and a second temperature detection line 51, and one end of the first temperature detection line 50 is abutted against the first electric core group 30 and is used for detecting and collecting the temperature of the first electric core group 30; the other end of the first temperature detection line 50 is connected with the PCB main board 2, and feeds back the temperature information of the first electric core group 30 detected and collected to the PCB main board 2. One end of the second temperature detection line 51 is abutted against the second electric core group 31 and is used for detecting and acquiring the temperature of the second electric core group 31; the other end of the second temperature detection line 51 is also connected with the PCB main board 2, and feeds back the detected and collected temperature information of the second cell group 31 to the PCB main board 2. In the in-service use process, when temperature detection line 5 detected the high temperature of electric core group 3, can be timely feed back for PCB mainboard 2 to the power supply cuts off, avoids 3 overheated emergence accidents of electric core group. And two temperature detection lines 5 monitor first electric core group 30 and second electric core group 31 respectively, set up the temperature variation of the battery of convenient real-time supervision first electric core group 30 and second electric core group 31 like this, and the monitoring precision is better, and is safer.

The utility model discloses an in some embodiments, the eye-splice terminal subassembly still includes temperature detection terminal 44 and ID communication terminal 45, and temperature detection terminal 44 and ID communication terminal 45 all are connected with PCB mainboard 2 electricity, and temperature detection terminal 44 passes through PCB mainboard 2 and is connected with temperature detection line 5. Specifically, the battery pack connecting seat 4 is further provided with a temperature detection terminal 44 and an ID communication terminal 45, the ID communication terminal 45 is connected with the PCB main board 2, the ID communication terminal 45 can transmit signals on the PCB main board 2 to an electric tool connected with the battery pack, and data communication is established between the electric tool and the battery pack, so that the electric tool can work better. The temperature detection terminal 44 is connected to the temperature detection line 5, and can output data monitored by the temperature detection line 5 through the temperature detection terminal 44, so as to detect the use state of the temperature detection line 5 and improve the reliability of the device.

In some embodiments of the present invention, the buckle terminal assembly further includes a charging terminal 46, and the charging terminal 46 is electrically connected to the PCB main board 2. Specifically, still be provided with charging terminal 46 on battery package connecting seat 4, charging terminal 46's one end is located the inside of battery package connecting seat 4 body and is connected with PCB mainboard 2 electricity, and other end opening is used for pegging graft with the charger outwards, charges for electric core group 3, and charging terminal 46's setting has increased electric core group 3's reuse rate, and the cost is reduced has further improved the economic nature.

The utility model discloses an in some embodiments, the outside of electricity core support 1 still is provided with charge indicator board 6, and charge indicator board 6 is connected with PCB mainboard 2 electricity. Specifically, 6 detachable of power indicator board installs on electric core support 1 to be connected with 2 electricity of PCB mainboard, through power indicator board 6 can be real-time demonstration electric core group 3's residual capacity, the staff of being convenient for is to the observation of electric core group 3 residual capacity, and the timely charges electric core group 3, guarantees that electric core group 3 electric quantity is sufficient, ensures electric tool's normal use.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A battery pack, comprising:

a battery cell bracket;

the PCB mainboard is mounted on the battery cell bracket;

the battery pack connecting seat is installed on the PCB mainboard and provided with a plug-in terminal assembly which is electrically connected with the PCB mainboard.

2. The battery pack of claim 1, wherein the first electric core assembly comprises a plurality of first batteries sequentially connected in series, and the second electric core assembly comprises a plurality of second batteries sequentially connected in series.

3. The battery pack of claim 2, wherein the plurality of first batteries are connected by a first cell connecting sheet, and the first cell group is connected with the main PCB board by the first cell connecting sheet; and the plurality of second batteries are connected through a second battery cell connecting sheet, and the second battery cell group is connected with the PCB mainboard through the second battery cell connecting sheet.

4. The battery pack of claim 1, wherein the receptacle terminal assembly includes a first positive terminal, a first negative terminal, a second positive terminal, and a second negative terminal, the first positive terminal, the first negative terminal, the second positive terminal, and the second negative terminal each electrically connected to the PCB motherboard.

5. The battery pack according to claim 4, wherein the first positive terminal is connected to the positive electrode of the first battery cell group through the PCB main board, and the first negative terminal is connected to the negative electrode of the first battery cell group through the PCB main board; the second positive terminal passes through the PCB mainboard with the anodal of second electric core group is connected, the second negative terminal passes through the PCB mainboard with the negative pole of second electric core group is connected.

6. The battery pack according to claim 1, further comprising a temperature detection line, wherein one end of the temperature detection line is connected to the electric core pack, and the other end of the temperature detection line is electrically connected to the PCB main board.

7. The battery pack according to claim 6, wherein the temperature detection lines include a first temperature detection line and a second temperature detection line, one end of the first temperature detection line is connected to the first cell group, and the other end of the first temperature detection line is electrically connected to the PCB main board; one end of the second temperature detection line is connected with the second electric core group, and the other end of the second temperature detection line is electrically connected with the PCB main board.

8. The battery pack according to claim 7, wherein the buckle terminal assembly further includes a temperature detection terminal and an ID communication terminal, both of which are electrically connected to the PCB main board, and the temperature detection terminal is connected to the temperature detection line through the PCB main board.

9. The battery pack of claim 1, wherein the buckle terminal assembly further comprises a charging terminal electrically connected to the PCB main board.

10. The battery pack according to claim 1, wherein an electric quantity indicating board is further disposed outside the cell support, and the electric quantity indicating board is electrically connected to the PCB main board.