CN215644775U - Battery pack structure - Google Patents

Battery pack structure Download PDF

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Publication number
CN215644775U
CN215644775U CN202121485167.3U CN202121485167U CN215644775U CN 215644775 U CN215644775 U CN 215644775U CN 202121485167 U CN202121485167 U CN 202121485167U CN 215644775 U CN215644775 U CN 215644775U
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CN
China
Prior art keywords
circuit board
battery cell
mounting
mounting portion
battery
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Active
Application number
CN202121485167.3U
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Chinese (zh)
Inventor
柯亨钊
戴建红
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Zhejiang Lera New Energy Power Technology Co Ltd
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Zhejiang Lera New Energy Power Technology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The utility model provides a battery pack structure, which comprises a battery cell, a framework, a first circuit board and a second circuit board, wherein the battery cell, the framework, the first circuit board and the second circuit board are sequentially connected and arranged along the radial direction of the battery cell; the framework extends along the length direction of the axis of the battery cell and comprises: the first installation part is used for positioning, installing and connecting the battery cell, the first installation part is arranged on one side, facing the battery cell, of the framework, and the first installation part extends and protrudes along the radial direction of the battery cell; the second mounting part is used for positioning, mounting and connecting the first circuit board and is arranged on one side, facing the first circuit board, of the framework; the third mounting part extends and protrudes along the length direction of the axis of the battery cell and is used for positioning, mounting and connecting the second circuit board; the second circuit board is in communication connection with the first circuit board. The internal arrangement structure of the battery pack structure is novel.

Description

Battery pack structure
The present invention claims priority over a patent application filed by the national intellectual property office of the people's republic of china, application number CN2020229613940, entitled "battery pack structure", on 12/10/2020 and incorporated herein by reference in its entirety.
Technical Field
The utility model relates to the field of batteries, in particular to a battery pack structure.
Background
In order to improve the versatility of the electric power tool and to prevent the working range of the electric power tool from being limited by the position of the socket, many cordless electric power tools are available on the market. The cordless electric tool has the characteristics of convenience in carrying, simplicity in operation, various functions and the like, can greatly reduce the labor intensity, improve the working efficiency and realize manual operation mechanization, and is widely applied to the fields of buildings, house decoration, automobiles, machinery, electric power, bridges, gardening and the like. The battery pack used as the power supply of the cordless electric tool has various internal structural arrangements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a battery pack structure with a novel internal arrangement structure.
Specifically, the utility model is realized by the following technical scheme:
in a first aspect of embodiments of the present invention, a battery pack structure is provided, including:
the battery cell, the framework, the first circuit board and the second circuit board are sequentially connected along the radial direction of the battery cell;
the framework extends along the length direction of the axis of the battery cell and comprises:
the first installation part is used for positioning, installing and connecting the battery cell, the first installation part is arranged on one side, facing the battery cell, of the framework, and the first installation part extends and protrudes along the radial direction of the battery cell;
the second mounting part is used for positioning, mounting and connecting the first circuit board and is arranged on one side, facing the first circuit board, of the framework;
the third mounting part extends and protrudes along the length direction of the axis of the battery cell and is used for positioning, mounting and connecting the second circuit board;
the second circuit board is in communication connection with the first circuit board.
Optionally, the first installation parts include two, the two first installation parts are respectively located at two ends of the battery core, each first installation part contacts with a corresponding end of the battery core, and each first installation part at least partially covers the corresponding end of the battery core, so that the battery core is clamped and fixed between the two first installation parts.
Optionally, the second installation department includes two, two the second installation department is located respectively two relative edges of first circuit board, every second installation department supports spacing connection the corresponding edge of first circuit board makes first circuit board with the interval sets up between the body of skeleton.
Optionally, the first installation parts are arranged on two sides of the body of the framework relatively, and the second installation parts are arranged on the other two sides of the body of the framework relatively.
Optionally, the third installation part is located one side of the first installation part far away from the battery core and located at the outer edge of the first installation part, the second circuit board is located one side of one of the first installation parts far away from the battery core, and the third installation part supports the edge of the second circuit board in a limiting connection manner.
Optionally, the outer edge of the first mounting portion is arc-shaped, a limiting portion is arranged on one side, away from the battery core, of one of the first mounting portions, the limiting portion extends along the outer edge of the one of the first mounting portions, two ends of the limiting portion are arranged towards the body of the framework, and the third mounting portion is located at the outer edge of the limiting portion;
the second circuit board is accommodated in the limiting part and the accommodating space formed by one of the first installation parts, and the second circuit board is matched with the accommodating space.
Optionally, the third mounting portion is integrally formed at an outer edge of the first mounting portion.
Optionally, the third mounting portion includes a plurality of, and is a plurality of the third mounting portion is arranged along the outer edge interval of first mounting portion, the second circuit board clamp is established and is fixed in between a plurality of the third mounting portion.
Optionally, the battery pack structure further includes a temperature sensor for detecting a temperature of the battery cell, and the temperature sensor is electrically connected to the first circuit board;
the framework further comprises a shielding part, the shielding part extends and protrudes along the radial direction of the battery cell and is located on one side of the outer side wall of the battery cell, and the temperature sensor is clamped between the shielding part and the outer side wall of the battery cell.
Optionally, the battery pack structure further includes a signal transmission line, one end of the signal transmission line is connected to the temperature sensor, and the other end of the signal transmission line is connected to one side of the first circuit board facing the frame;
the framework is further provided with a positioning part which is positioned between the shielding part and the position of the framework for connecting the signal transmission line, and one part of the signal transmission line is attached to one side surface of the positioning part facing the battery core.
Optionally, the first circuit board is a main control board of a battery pack structure, and the second circuit board is a sub-board.
Compared with the prior art, the utility model has the beneficial technical effects that:
this technical scheme connects gradually the setting with electric core, the skeleton, first circuit board along the radial direction of electric core, and the skeleton extends along the axis length direction of electric core, this skeleton extends first installation department of protrusion and third installation department respectively along the radial direction of electric core and the axis length direction of electric core, be used for fixing a position electric core and second circuit board respectively, and the skeleton is equipped with the second installation department that is used for fixing a position erection joint first circuit board towards one side of first circuit board, and keep second circuit board and first circuit board communication to be connected, the structure is arranged novelty, it is succinct.
In a second aspect of the embodiments of the present invention, there is provided a battery pack structure, including:
a housing;
the battery cell, the framework, the first circuit board and the second circuit board are positioned in the shell and sequentially connected along the radial direction of the battery cell;
the framework extends and protrudes along the length direction of the axis of the battery cell to form a third mounting part;
the third mounting part is used for positioning, mounting and connecting the second circuit board;
the second circuit board is in communication connection with the first circuit board, and at least comprises a wake-up switch;
the shell comprises an end cover corresponding to the second circuit board, a button is arranged at the position, corresponding to the awakening switch, of the end cover, and a convex column suitable for being in contact with the awakening switch is arranged on the inner side of the button.
Optionally, the button is adapted to be elastically deformed, and/or; the outer surface of the button is substantially flush with the outer surface of the end cap.
Optionally, the framework further includes a first mounting portion for positioning, mounting and connecting the battery cell, the first mounting portion is disposed on one side of the framework facing the battery cell, and the first mounting portion extends and protrudes along a radial direction of the battery cell;
the first installation parts comprise two first installation parts, the two first installation parts are respectively located at two ends of the battery cell, each first installation part is in contact with the corresponding end of the battery cell, and at least part of each first installation part covers the corresponding end of the battery cell, so that the battery cell clamp is fixed between the two first installation parts.
Optionally, the framework further comprises a second mounting portion for positioning, mounting and connecting the first circuit board, and the second mounting portion is arranged on one side of the framework facing the first circuit board;
the second installation department includes two, two the second installation department is located respectively two relative edges of first circuit board, every second installation department support spacing connection the corresponding edge of first circuit board makes first circuit board with the interval sets up between the body of skeleton.
Optionally, the third installation part is located one side of the first installation part far away from the battery core and located at the outer edge of the first installation part, the second circuit board is located one side of one of the first installation parts far away from the battery core, and the third installation part supports the edge of the second circuit board in a limiting connection manner.
Compared with the prior art, the utility model has the beneficial technical effects that:
this technical scheme disposes the second circuit board of awakening switch and sets up in the axis length direction of electric core to the button has been arranged in the end cover department that corresponds, and the button inboard is equipped with and is suitable for and awakens the projection that the switch contacted mutually, and when the user operation used, four fingers grip battery package length direction surface tightly, and it is convenient to grip, and the thumb just corresponds and is located button department, conveniently presses the operation.
In a third aspect of the embodiments of the present invention, there is provided a battery pack structure, including:
the battery cell, the framework and the first circuit board are sequentially connected along the radial direction of the battery cell;
the framework extends along the length direction of the axis of the battery cell and comprises:
the first installation part is used for positioning, installing and connecting the battery cell, the first installation part is arranged on one side, facing the battery cell, of the framework, and the first installation part extends and protrudes along the radial direction of the battery cell;
the second mounting part is used for positioning, mounting and connecting the first circuit board and is arranged on one side, facing the first circuit board, of the framework; an arc-shaped groove extending along the length direction of the axis of the battery cell is formed in one side, facing the battery cell, of the framework, and the arc-shaped groove is matched with the arc-shaped surface of the battery cell;
the first installation part is arranged on the axis of the battery cell, the length direction of the axis of the battery cell is opposite to the battery cell, and the arc-shaped groove is arranged on the radial direction of the battery cell and corresponds to the battery cell for limitation.
Optionally, the width of the arc-shaped groove is smaller than the outer diameter of the battery cell.
Compared with the prior art, the utility model has the beneficial technical effects that:
this technical scheme is with electric core, skeleton and first circuit board connect gradually the setting along the radial direction of electric core, and the skeleton is on the radial direction of electric core, on the axis length direction of perpendicular to electric core promptly, extend the first installation department of protrusion formation respectively, and the skeleton is equipped with the arc wall that extends along the axis length direction of electric core towards one side of electric core, the arc wall carries out spacingly with the arcwall looks adaptation of electric core, first installation department is spacing to electric core on the axis length direction of electric core, it is spacing to be equipped with the arc wall on the radial direction of electric core simultaneously, it is spacing to stabilize to electric core through the skeleton.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic diagram illustrating a battery pack structure according to an exemplary embodiment of the present invention;
fig. 2 is an exploded view of one battery pack configuration shown in an exemplary embodiment of the utility model;
fig. 3 is an exploded view of a portion of a battery pack structure according to an exemplary embodiment of the present invention;
fig. 4 is a cross-sectional view illustrating a structure of a battery pack according to an exemplary embodiment of the present invention;
fig. 5 is an exploded view of another perspective structure of a battery pack structure according to an exemplary embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, a battery pack structure 100 includes a battery cell 20, a frame 30, a first circuit board 40a, and a second circuit board 40b, where the battery cell 20, the frame 30, and the first circuit board 40a are sequentially connected in a radial direction of the battery cell 20.
In the embodiment of the present invention, the frame 30 extends along the axial length direction of the battery cell 20, and the frame 30 may include a first mounting portion 30a, a second mounting portion 30b, and a third mounting portion 30 c.
The first mounting portion 30a is disposed on one side of the framework 30 facing the battery cell 20, and the first mounting portion 30a extends and protrudes along a radial direction of the battery cell 20, and the first mounting portion 30a of the present embodiment is used for positioning, mounting and connecting the battery cell 20. The second mounting portion 30b is disposed on a side of the frame 30 facing the first circuit board 40a, and the second mounting portion 30b is used for positioning, mounting and connecting the first circuit board 40 a.
The third mounting portion 30c extends and protrudes along the axial length direction of the battery cell 20, and the third mounting portion 30c of the present embodiment is used for positioning, mounting and connecting the second circuit board 40 b.
In the present embodiment, the second circuit board 40b is communicatively connected to the first circuit board 40 a.
Optionally, the first circuit board 40a is a main control board of the battery pack structure 100 and has functions of BMS management and the like, and the second circuit board 40b is a sub-board on which a wake-up switch and/or a lamp bead and other electronic components can be configured.
This technical scheme connects gradually the setting with electric core, the skeleton, first circuit board along the radial direction of electric core, and the skeleton extends along the axis length direction of electric core, this skeleton extends first installation department of protrusion and third installation department respectively along the radial direction of electric core and the axis length direction of electric core, be used for fixing a position electric core and second circuit board respectively, and the skeleton is equipped with the second installation department that is used for fixing a position the erection joint first circuit board towards one side of first circuit board, and keep second circuit board and first circuit board communication connection, the novel and succinct of structural arrangement of battery package structure.
Specifically, as shown in fig. 2 and 3, the first mounting portions 30a include two first mounting portions 30a, the two first mounting portions 30a are respectively located at two end portions of the battery cell 20 (i.e., a positive electrode and a negative electrode of the battery cell 20), each first mounting portion 30a is in contact with a corresponding end portion of the battery cell 20, and each first mounting portion 30a at least partially covers the corresponding end portion of the battery cell 20, so that the battery cell 20 is sandwiched and fixed between the two first mounting portions 30 a. The first mounting portions 30a are correspondingly distributed at two ends of the battery cell 20 in the long axis direction, the distance between the two first mounting portions 30a is suitable for being matched with the axial length of the battery cell 20, and the first mounting portions 30a at the two ends are used for limiting the battery cell 20 in the long axis direction. Alternatively, the height of the first mounting portion 30a in the radial direction of the battery cell 20 corresponds to the height of the radial end face of the battery cell 20.
Referring to fig. 2 and 3 again, the second mounting portions 30b include two second mounting portions 30b, the two second mounting portions 30b are respectively located at two opposite edges of the first circuit board 40a, and each second mounting portion 30b supports a corresponding edge of the first circuit board 40a in a limiting connection manner, so that the first circuit board 40a and the body of the framework 30 are arranged at intervals.
Optionally, the second mounting portion 30b adopts a locking structure, so that the first circuit board 40a is directly fixed and limited with the frame 30. Wherein, correspond on the skeleton 30 and dispose the installation position of first circuit board 40a, first circuit board 40a matches with the installation position after, with skeleton 30 spacing fixed through convex second installation department 30 b.
Referring to fig. 2 and 3 again, the two first mounting portions 30a are disposed on two sides of the body of the frame 30, and the two second mounting portions 30b are disposed on the other two sides of the body of the frame 30, so as to respectively limit and fix the battery cell 20 and the first circuit board 40a in different directions.
As described above, the battery cell 20 is limited by the frame 30, in addition, the positive and negative ends of the battery cell 20 are connected to the first circuit board 40a by the first electrical connector 50 and the second electrical connector 60, and the two ends of the first electrical connector 50 and the second electrical connector 60 are respectively fixedly connected to the battery cell 20 and the first circuit board 40a, for example, a welding connection manner may be adopted, so as to realize the limiting and fixing of the battery cell 20 and the frame 30.
The battery cell 20 may be an 21700 battery cell or an 18650 battery cell, the first electrical connector 50 and the second electrical connector 60 are made of a conductive material, for example, nickel sheets may be used, and the positive and negative electrode connection points of the battery cell corresponding to the first electrical connector 50 and the second electrical connector 60 may be fixed by spot welding.
The first electrical connector 50 and the second electrical connector 60 are electrically connected and fixed.
With continued reference to fig. 2 and fig. 3, the first electrical connector 50 and the second electrical connector 60 respectively extend along the axial length direction of the battery cell 20.
The battery cell 20 is positioned in the frame 30, two end electrodes of the frame 30 corresponding to the battery cell 20 are respectively provided with a connection opening O1 and an connection opening O2, starting ends of the first electrical connector 50 and the second electrical connector 60 are respectively corresponding to two end electrodes of the battery cell 20 at the connection openings O1 and O2, and are electrically connected to each other, specifically, the first electrical connector 50 and the second electrical connector 60 are made of a metal nickel sheet and are connected to the two end electrodes of the battery cell 20 by spot welding, and spot welding connection portions of the metal nickel sheet are shown as spot welding sections 50a in fig. 3.
Then, the first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward transverse direction e, and are bent, and then stick to the outer surface of the framework 30 to extend towards and connect with the first circuit board 40a, and the first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward transverse direction e, and are bent, so as to form a transversely extending bent section 50b, as shown in a region a in fig. 3.
The above-mentioned structural design makes first electrical connector 50 and second electrical connector 60 and the cell epidermis form interval distribution, and first electrical connector 50 and second electrical connector 60 link to each other with the cell 20 electrode, and obviously be conducting material, and support skeleton 40 is insulating material in this technical scheme, so, be separated by insulating material between electrically conductive first electrical connector 50 and second electrical connector 60 and the cell 20 epidermis, therefore, even the damage of cell 20 epidermis, can not take place the short circuit accident yet, play the effect of safe insulating protection.
In addition, the battery pack structure 100 is suitable for an electric tool, and the electric tool often involves large vibration during use, so that the first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward transverse direction e, and are bent to form a transverse extending bending section, which can also play a role in effectively damping vibration, and avoid the influence of large vibration on the inside during use of the electric tool.
Referring to fig. 1 and 2, the third mounting portion 30c is disposed at a side of the first mounting portion 30a away from the battery cell 20, and the third mounting portion 30c is located at an outer edge of the first mounting portion 30a, so that the second circuit board 40b is convenient to assemble and limit. In this embodiment, the second circuit board 40b is located on one side of the first mounting portion 30a away from the battery cell 20, and the third mounting portion 30c supports an edge of the second circuit board 40b in a limited connection.
Alternatively, the third mounting portion 30c employs a snap-lock structure.
Referring again to fig. 1 and 2, the outer edge of the first mounting portion 30a may have a circular arc shape.
Referring to fig. 2, a limit portion 30a-1 is disposed on a side of the one of the first mounting portions 30a away from the battery cell 20, the limit portion 30a-1 extends along an outer edge of the one of the first mounting portions 30a, two ends of the limit portion 30a-1 are disposed toward the body of the frame 30, and a third mounting portion 30c is disposed at an outer edge of the limit portion 30 a-1. In this embodiment, the second circuit board 40b is accommodated in the accommodating space formed by the limiting portion 30a-1 and one of the first mounting portions, and the second circuit board 40b is adapted to the accommodating space. By the design, the second circuit board 40b can be better limited, and the structure is more compact.
Alternatively, the third mounting portion 30c is integrally formed at the outer edge of the first mounting portion 30a, and the third mounting portion 30c has a large structural strength and is not easily damaged.
The third mounting portion 30c of the present embodiment may include a plurality of third mounting portions 30c, as shown in fig. 1 and 2, the third mounting portions 30c include 3 third mounting portions, the third mounting portions 30c are arranged at intervals along an outer edge of the first mounting portion 30a, and the second circuit board 40b is sandwiched and fixed between the third mounting portions 30 c. The second circuit board 40b is stably positioned by providing the plurality of third mounting portions 30 c.
Referring to fig. 1, 2 and 3, the battery pack structure 100 further includes a temperature sensor 70, the temperature sensor 70 is used for detecting the temperature of the battery cell 20, and the temperature sensor 70 is electrically connected to the first circuit board 40a, so that the first circuit board 40a can acquire the temperature sensor 70 for detecting the temperature of the battery cell 20. Skeleton 30 still includes shielding portion 30e, and shielding portion 30e is located the one side of the lateral wall of electric core 20, and temperature sensor 70 presss from both sides and locates between shielding portion 30e and the lateral wall of electric core 20, so design, on the one hand the rational utilization battery package structure 100's inner space, on the other hand forms effective protection and stabilizes temperature sensor 70 spacing through shielding portion to temperature sensor 70.
Alternatively, the temperature sensor 70 is cylindrical; of course, in other embodiments, the temperature sensor 70 may have other shapes.
Optionally, the shielding portion 30e is a protrusion; in other embodiments, the shielding portion 30e may have other structures. The battery pack structure 100 may further include a signal transmission line 80, and one end of the signal transmission line 80 is connected to the temperature sensor 70 and the other end is connected to a side of the first circuit board 40a facing the bobbin 30. In this embodiment, the frame 30 is further provided with a positioning portion 30f, the positioning portion 30f is located between the shielding portion 30e and a position of the frame 30 for connecting the signal transmission line 80, and a part of the signal transmission line 80 is attached to a side surface of the positioning portion 30f facing the battery cell 20. The signal transmission line 80 is limited by the positioning part 30f, so that the arrangement of the signal transmission line 80 is more attractive.
Referring to fig. 1 and 2, a notch 30g is formed in one side of the body of the frame 30, the notch 30g extends along the length direction of the axis of the battery cell 20, and the shielding portion 30e and the positioning portion 30f are formed in the notch 30g, so that the internal space of the battery pack structure 100 is further utilized reasonably, and the miniaturization design of the frame 30 is facilitated.
Referring to fig. 4 and 5, the battery pack structure 100 may include a casing 10, a battery cell 20 located in the casing 10 and sequentially connected to the battery cell 20 along a radial direction of the battery cell 20, a frame 30, and a first circuit board 40 a. The battery pack structure 100 may further include a second circuit board 40 b.
The framework 30 extends and protrudes along the axial length direction of the battery cell 20 to form a third mounting portion 30c, and the third mounting portion 30c is used for positioning, mounting and connecting the second circuit board 40 b.
The second circuit board 40b is in communication connection with the first circuit board 40a, and the third mounting portion 30c at least comprises a wake-up switch 40 b-1;
the housing 10 may include an end cap 10a corresponding to the second circuit board 40b, a button 10a-1 is disposed at a position of the end cap 10a corresponding to the wake-up switch 40b-1, and a protrusion p adapted to contact with the wake-up switch 40b-1 is disposed inside the button 10 a-1.
This technical scheme disposes the second circuit board of awakening switch and sets up in the axis length direction of electric core to end cover department that corresponds has arranged the button, and the button inboard is equipped with and is suitable for and awakens the projection that the switch contacted mutually, and when the user operation used, four fingers tightly held the battery package length direction surface, and it is convenient to grip, and the thumb just corresponds and is located button department, conveniently presses the operation, and convenient one-hand operation grips, presses.
Wherein the button 10a-1 is adapted to be elastically deformed, and/or; the outer surface of the button 10a-1 is substantially flush with the outer surface of the cap 10a, see FIG. 4 in particular.
The battery pack structure 100 may further include a first mounting portion 30a, where the first mounting portion 30a is disposed on a side of the framework 30 facing the battery core 20, and the first mounting portion 30a extends and protrudes along a radial direction of the battery core 20, and the first mounting portion 30a of the present embodiment is used for positioning, mounting and connecting the battery core 20.
The first mounting portions 30a may include two first mounting portions 30a, the two first mounting portions 30a are respectively located at two ends of the battery cell 20 (i.e., a positive electrode and a negative electrode of the battery cell 20), each first mounting portion 30a is in contact with a corresponding end of the battery cell 20, and each first mounting portion 30a at least partially covers the corresponding end of the battery cell 20, so that the battery cell 20 is sandwiched and fixed between the two first mounting portions 30 a.
The first mounting portions 30a are correspondingly distributed at two ends of the battery cell 20 in the long axis direction, the distance between the two first mounting portions 30a is suitable for being matched with the axial length of the battery cell 20, and the first mounting portions 30a at the two ends are used for limiting the battery cell 20 in the long axis direction. Alternatively, the height of the first mounting portion 30a in the radial direction of the battery cell 20 corresponds to the height of the radial end face of the battery cell 20.
The battery pack structure 100 may further include a second mounting portion 30b, the second mounting portion 30b is disposed on a side of the frame 30 facing the first circuit board 40a, and the second mounting portion 30b is used for positioning, mounting and connecting the first circuit board 40 a.
The second mounting portions 30b may include two, the two second mounting portions 30b are respectively located at two opposite edges of the first circuit board 40a, and each second mounting portion 30b supports a corresponding edge of the first circuit board 40a in a limiting connection, so that the first circuit board 40a and the body of the frame 30 are spaced apart from each other.
The third mounting portion 30c is disposed on a side of the first mounting portion 30a away from the battery cell 20, and the third mounting portion 30c is located at an outer edge of the first mounting portion 30a, so that the second circuit board 40b is convenient to assemble and limit. In this embodiment, the second circuit board 40b is located on one side of the first mounting portion 30a away from the battery cell 20, and the third mounting portion 30c supports an edge of the second circuit board 40b in a limited connection. Referring to fig. 5, the battery pack structure 100 may include: the battery cell 20, the skeleton 30 and the first circuit board 40a are sequentially connected and arranged along the radial direction of the battery cell 20.
The frame 30 extends along the axial length direction of the battery cell 20, and the frame 30 may include a first mounting portion 30a and a second mounting portion 30b, where the first mounting portion 30a is disposed on one side of the frame 30 facing the battery cell 20, and the first mounting portion 30a extends and protrudes along the radial direction of the battery cell 20, and the first mounting portion 30a of the present embodiment is used for positioning, mounting and connecting the battery cell 20. The second mounting portion 30b is disposed on a side of the frame 30 facing the first circuit board 40a, and the second mounting portion 30b is used for positioning, mounting and connecting the first circuit board 40 a. One side of the framework 30 facing the battery cell 20 is further provided with an arc-shaped groove 30d extending along the length direction of the axis of the battery cell 20, and the arc-shaped groove 30d is matched with the arc-shaped surface of the battery cell 20.
In this embodiment, the first mounting portion 30a is limited to the battery cell 20 in the axial length direction of the battery cell 20, the arc-shaped groove 30d is limited to the battery cell 20 in the radial direction of the battery cell 20, and the arc-shaped groove 30d is combined with the inner wall of the casing 10 to form the radial direction of the battery cell. Moreover, the width of the arc-shaped slot 30c is smaller than the outer diameter of the battery core 20, so as to avoid the radial width of the battery pack structure 100 from being larger, and to minimize the external dimension of the battery pack structure 100.
This technical scheme is with electric core, skeleton and first circuit board connect gradually the setting along the radial direction of electric core, and the skeleton is in electric core radial direction, on the axis length direction of perpendicular to electric core promptly, extend the first installation department of protrusion formation, and the skeleton is equipped with the arc wall that extends along the axis length direction of electric core towards one side of electric core, the arc wall carries out spacingly with the arcwall face looks adaptation of electric core, first installation department is spacing to electric core on the axis direction, it is spacing to be equipped with the arc wall on radial direction simultaneously, it is spacing to stabilize to electric core through the skeleton.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (18)

1. A battery pack structure, comprising:
the battery cell, the framework, the first circuit board and the second circuit board are sequentially connected along the radial direction of the battery cell;
the framework extends along the length direction of the axis of the battery cell and comprises:
the first installation part is used for positioning, installing and connecting the battery cell, the first installation part is arranged on one side, facing the battery cell, of the framework, and the first installation part extends and protrudes along the radial direction of the battery cell;
the second mounting part is used for positioning, mounting and connecting the first circuit board and is arranged on one side, facing the first circuit board, of the framework;
the third mounting part extends and protrudes along the length direction of the axis of the battery cell and is used for positioning, mounting and connecting the second circuit board;
the second circuit board is in communication connection with the first circuit board.
2. The battery pack structure of claim 1, wherein the first mounting portions include two first mounting portions, the two first mounting portions are respectively located at two ends of the battery cell, each first mounting portion is in contact with a corresponding end of the battery cell, and each first mounting portion at least partially covers the corresponding end of the battery cell, so that the battery cell is sandwiched and fixed between the two first mounting portions.
3. The battery pack structure of claim 2, wherein the second mounting portions include two second mounting portions, the two second mounting portions are respectively located at two opposite edges of the first circuit board, and each second mounting portion supports a corresponding edge of the first circuit board in a limiting connection, so that the first circuit board and the body of the frame are spaced apart from each other.
4. The battery pack structure according to claim 3, wherein the two first mounting portions are provided on opposite sides of the body of the frame, and the two second mounting portions are provided on opposite sides of the body of the frame.
5. The battery pack structure of claim 1 or 2, wherein the third mounting portion is disposed on a side of the first mounting portion away from the battery core and located at an outer edge of the first mounting portion, the second circuit board is located on a side of one of the first mounting portions away from the battery core, and the third mounting portion supports and is in limited connection with an edge of the second circuit board.
6. The battery pack structure according to claim 5, wherein outer edges of the first mounting portions are arc-shaped, a limiting portion is provided on a side of the one of the first mounting portions, which is away from the battery core, and extends along the outer edge of the one of the first mounting portions, two ends of the limiting portion are provided toward the body of the frame, and the third mounting portion is located at the outer edge of the limiting portion;
the second circuit board is accommodated in the limiting part and the accommodating space formed by one of the first installation parts, and the second circuit board is matched with the accommodating space.
7. The battery pack structure of claim 5, wherein the third mounting portion is integrally formed at an outer edge of the first mounting portion.
8. The battery pack structure of claim 5, wherein the third mounting portion includes a plurality of third mounting portions arranged at intervals along an outer edge of the first mounting portion, and the second circuit board is sandwiched and fixed between the plurality of third mounting portions.
9. The battery pack structure of claim 1, further comprising a temperature sensor for detecting a temperature of the cells, the temperature sensor being electrically connected to the first circuit board;
the framework further comprises a shielding part, the shielding part is located on one side of the outer side wall of the battery cell, and the temperature sensor is clamped between the shielding part and the outer side wall of the battery cell.
10. The battery pack structure of claim 9, further comprising a signal transmission line having one end connected to the temperature sensor and the other end connected to a side of the first circuit board facing the frame;
the framework is further provided with a positioning part which is positioned between the shielding part and the position of the framework for connecting the signal transmission line, and one part of the signal transmission line is attached to one side surface of the positioning part facing the battery core.
11. The battery pack structure of claim 1, wherein the first circuit board is a main control board of the battery pack structure and the second circuit board is a sub-board.
12. A battery pack structure, comprising:
a housing;
the battery cell, the framework, the first circuit board and the second circuit board are positioned in the shell and sequentially connected along the radial direction of the battery cell;
the framework extends and protrudes along the length direction of the axis of the battery cell to form a third mounting part;
the third mounting part is used for positioning, mounting and connecting the second circuit board;
the second circuit board is in communication connection with the first circuit board, and at least comprises a wake-up switch;
the shell comprises an end cover corresponding to the second circuit board, a button is arranged at the position, corresponding to the awakening switch, of the end cover, and a convex column suitable for being in contact with the awakening switch is arranged on the inner side of the button.
13. The battery pack structure of claim 12, wherein the button is adapted to be elastically deformed, and/or; the outer surface of the button is substantially flush with the outer surface of the end cap.
14. The battery pack structure of claim 12, wherein the frame further comprises a first mounting portion for positioning, mounting and connecting the battery cell, the first mounting portion is disposed on a side of the frame facing the battery cell, and the first mounting portion extends and protrudes along a radial direction of the battery cell;
the first installation parts comprise two first installation parts, the two first installation parts are respectively located at two ends of the battery cell, each first installation part is in contact with the corresponding end of the battery cell, and at least part of each first installation part covers the corresponding end of the battery cell, so that the battery cell clamp is fixed between the two first installation parts.
15. The battery pack structure according to claim 12 or 14, wherein the frame further comprises a second mounting portion for positioning, mounting and connecting the first circuit board, the second mounting portion being provided on a side of the frame facing the first circuit board;
the second installation department includes two, two the second installation department is located respectively two relative edges of first circuit board, every second installation department support spacing connection the corresponding edge of first circuit board makes first circuit board with the interval sets up between the body of skeleton.
16. The battery pack structure of claim 14, wherein the third mounting portion is disposed on a side of the first mounting portion away from the battery cell and located at an outer edge of the first mounting portion, the second circuit board is located on a side of one of the first mounting portions away from the battery cell, and the third mounting portion supports and is in limited connection with an edge of the second circuit board.
17. A battery pack structure, comprising:
the battery cell, the framework and the first circuit board are sequentially connected along the radial direction of the battery cell;
the framework extends along the length direction of the axis of the battery cell and comprises:
the first installation part is used for positioning, installing and connecting the battery cell, the first installation part is arranged on one side, facing the battery cell, of the framework, and the first installation part extends and protrudes along the radial direction of the battery cell;
the second mounting part is used for positioning, mounting and connecting the first circuit board and is arranged on one side, facing the first circuit board, of the framework; an arc-shaped groove extending along the length direction of the axis of the battery cell is formed in one side, facing the battery cell, of the framework, and the arc-shaped groove is matched with the arc-shaped surface of the battery cell;
the first installation part is arranged on the axis of the battery cell, the length direction of the axis of the battery cell is opposite to the battery cell, and the arc-shaped groove is arranged on the radial direction of the battery cell and corresponds to the battery cell for limitation.
18. The battery pack structure of claim 17, wherein the arc-shaped slot has a width that is less than an outer diameter of the cell.
CN202121485167.3U 2020-12-10 2021-07-01 Battery pack structure Active CN215644775U (en)

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CN2020229613940 2020-12-10

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CN202121485167.3U Active CN215644775U (en) 2020-12-10 2021-07-01 Battery pack structure
CN202121489702.2U Active CN215644776U (en) 2020-12-10 2021-07-01 Battery pack structure
CN202110745791.0A Pending CN113571828A (en) 2020-12-10 2021-07-01 Battery pack structure

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US20230395948A1 (en) * 2020-12-10 2023-12-07 Zhejiang Lera New Energy Power Technology Co., Ltd Battery pack
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