WO2022121993A1 - 一种电池包 - Google Patents

一种电池包 Download PDF

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Publication number
WO2022121993A1
WO2022121993A1 PCT/CN2021/136888 CN2021136888W WO2022121993A1 WO 2022121993 A1 WO2022121993 A1 WO 2022121993A1 CN 2021136888 W CN2021136888 W CN 2021136888W WO 2022121993 A1 WO2022121993 A1 WO 2022121993A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical connector
circuit board
battery
battery pack
skeleton
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/136888
Other languages
English (en)
French (fr)
Inventor
柯亨钊
戴建红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Lera New Energy Power Technology Co Ltd
Original Assignee
Zhejiang Lera New Energy Power Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Lera New Energy Power Technology Co Ltd filed Critical Zhejiang Lera New Energy Power Technology Co Ltd
Priority to EP21902698.6A priority Critical patent/EP4231424A4/en
Priority to JP2022580525A priority patent/JP7675112B2/ja
Priority to KR1020237013096A priority patent/KR102891911B1/ko
Priority to US18/034,083 priority patent/US12027725B2/en
Publication of WO2022121993A1 publication Critical patent/WO2022121993A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • 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
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
    • 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]
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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

Definitions

  • the utility model relates to a battery pack.
  • Cordless power tools In order to improve the versatility of the power tool, so that the working range of the power tool is not limited by the position of the socket, there are many cordless power tools on the market.
  • Cordless power tools have the characteristics of easy portability, simple operation and diverse functions, which can greatly reduce labor intensity, improve work efficiency, and realize mechanization of manual operation. Therefore, they are widely used in construction, housing decoration, automobiles, machinery, electricity, bridges, gardening, etc. field. In order to avoid shaking inside the traditional battery pack suitable for power supply of cordless electric tools, its assembly structure is relatively complicated.
  • the purpose of the present invention is to provide a battery pack which has a simple assembly structure and can effectively avoid the shaking inside the battery pack.
  • a battery pack provided by the utility model comprises:
  • a first electrical connector and a second electrical connector which are respectively arranged at both ends of the positive and negative poles in the axial direction of the battery core, and are respectively connected to the circuit board;
  • a third electrical connector connected to the circuit board and configured to be electrically connected to an electrical device such that power from the cell can be supplied to the electrical device through the third electrical connector;
  • the integrally connected battery core, skeleton and circuit board, as well as the first electrical connector, the second electrical connector and the third electrical connector are in sliding limit fit with the inner cavity of the housing.
  • integrally connected battery core, skeleton and circuit board, as well as the first electrical connector, the second electrical connector and the third electrical connector are in sliding limit fit with the inner cavity of the housing along the length direction.
  • the skeleton is provided with a protruding sliding key extending linearly along its length direction, and a corresponding sliding groove is arranged on the inner wall of the casing; or;
  • the skeleton is provided with a concave sliding slot extending linearly along its length direction, and a corresponding protruding sliding key is arranged on the inner wall of the casing.
  • first electrical connector and the second electrical connector extend laterally outwards, respectively, bend and adhere to the outer surface of the skeleton, and extend and connect to the circuit board.
  • first electrical connector and the second electrical connector respectively include extension sections extending opposite to each other along the axial length direction of the battery core; the distance between the extension section and the circuit board is at least 2mm spacing.
  • first electrical connector and the second electrical connector respectively include extension sections extending opposite to each other along the axial length direction of the battery core, and the extension sections are spaced apart from each other by a distance of not less than 3 mm.
  • a distance of no more than 4 mm is maintained between the extension section and the circuit board.
  • the skeleton extends along the axial length direction of the battery core, and extends outward in a direction perpendicular to the axis length direction of the battery core to form a mounting portion;
  • the mounting portion is suitable for positioning, mounting and connecting the battery core and the circuit board respectively;
  • the skeleton further includes an arc-shaped groove located between the mounting parts and extending along the axial length direction of the battery core;
  • the arc-shaped groove corresponds to the arc-shaped surface of the battery core.
  • the width of the arc-shaped slot is smaller than the outer diameter of the battery core.
  • the battery core, the skeleton and the circuit board are connected to each other in turn along the radial direction of the battery core, wherein the battery core is limited by the skeleton, and the battery core is connected to the positive direction through the first electrical connector and the second electrical connector.
  • Both ends of the negative pole are connected to the circuit board, and the two ends of the first electrical connector and the second electrical connector are respectively fixedly connected to the battery core and the circuit board, and the welding connection method is specifically adopted, so as to realize the limit and fixation of the battery core and the skeleton,
  • the first electrical connector and the second electrical connector play the role of electrical connection on the one hand, and also play the role of limiting and fixing on the other hand.
  • the circuit board is directly fixed to the skeleton, and the third electrical connector is fixed.
  • the battery cell, the skeleton and the circuit board, as well as the first electrical connector, the second electrical connector and the third electrical connector are connected into one body, and the integrated structure as a whole is directly connected to the sliding limit of the inner cavity of the housing.
  • Position matching, the assembly is simple and convenient, and the integrated structure and the inner cavity are further limited to effectively prevent the inside of the battery pack from shaking.
  • the purpose of the present invention is to provide a battery pack that can effectively avoid shaking inside the battery pack.
  • a battery pack provided by the utility model is characterized in that, comprising:
  • a first electrical connector and a second electrical connector which are respectively arranged at both ends of the positive and negative poles in the axial direction of the battery core, and are respectively connected to the circuit board;
  • a third electrical connector connected to the circuit board and configured to be electrically connected to an electrical device such that power from the cell can be supplied to the electrical device through the third electrical connector;
  • the frame is matched with the inner cavity of the casing in a sliding limit.
  • the battery core, the skeleton and the circuit board, as well as the first electrical connector, the second electrical connector and the third electrical connector are connected to each other and assembled together.
  • the skeleton is provided with a protruding sliding key extending linearly along its length direction, and a corresponding sliding groove is arranged on the inner wall of the casing; or;
  • the skeleton is provided with a concave sliding slot extending linearly along its length direction, and a corresponding protruding sliding key is arranged on the inner wall of the casing.
  • the technical solution connects the battery core, the skeleton and the circuit board to each other in turn along the radial direction of the battery core, wherein the battery core and the circuit board are respectively limited by the skeleton, and after the limit connection, slide through the skeleton and the inner cavity of the shell
  • the limit fit can effectively prevent the internal shaking of the battery pack.
  • Fig. 1 structural representation of specific embodiment 1 of the present utility model
  • Fig. 2 structural explosion schematic diagram of specific embodiment 1 of the present utility model
  • Fig. 3 the structural assembly schematic diagram of the specific embodiment 1 of the present utility model
  • Fig. 4 Explosion schematic diagram of part 1 of the specific embodiment of the present utility model
  • Fig. 5 Structure perspective view of specific embodiment 2 of the present invention.
  • Fig. 6 Structure exploded diagram of specific embodiment 2 of the present invention.
  • Figure 7 a top view of the structure of the specific embodiment 2 of the present invention.
  • Figure 8 a longitudinal cross-sectional view of the structure of the specific embodiment 2 of the present invention.
  • FIG. 9 Another exploded structure schematic diagram of specific embodiment 2 of the present invention.
  • Figure 10 Schematic diagram of the exploded structure of the battery cell, the skeleton and the circuit board according to the second embodiment of the present invention.
  • Figure 11 another perspective view of the structure of the specific embodiment of the present invention 2 exploded schematic diagram
  • Fig. 12 the structural representation of specific embodiment 3 of the present utility model
  • Fig. 13 Structure exploded view of specific embodiment 3 of the present utility model
  • Figure 14 Partial structure exploded view of the specific embodiment 3 of the present utility model
  • Fig. 15 Structure sectional view of specific embodiment 3 of the present utility model
  • Figure 16 Another perspective structure exploded view of the specific embodiment 3 of the present invention.
  • a battery pack 100 includes a casing 10 , a battery cell 20 , a skeleton 30 and a circuit board 40 , and the battery core 20 , the skeleton 30 and the circuit board 40 are along the diameter of the battery core 20 . connected to each other in turn in the direction; also includes;
  • the first electrical connector 50 and the second electrical connector 60 are respectively arranged at both ends of the positive and negative poles in the axial direction of the cell 20, and the first electrical connector 50 and the second electrical connector 60 are respectively connected to the circuit board 40;
  • the third electrical connector (70a; 70b) is configured to be electrically connected to the electrical device so that the power from the battery cell 20 can pass through the third electrical device Electrical connectors (70a; 70b) are provided to electrical equipment;
  • the integrated battery cell 20 , the skeleton 30 and the circuit board 40 , as well as the first electrical connector 50 , the second electrical connector 60 and the third electrical connector ( 70 a ; 70 b ) are matched with the inner cavity of the housing 10 by sliding limit .
  • the battery cell 20 is limited by the skeleton 30, and the positive and negative ends of the battery cell 20 are connected to the circuit board 40 through the first electrical connector 50 and the second electrical connector 60, and the first electrical connector 50 and the second electrical connection are connected.
  • the two ends of the device 60 are respectively fixedly connected to the battery cell 20 and the circuit board 40 , specifically by welding, so as to realize the limit and fixation of the battery core 20 and the skeleton 30 .
  • the first electrical connector 50 and the second electrical connector 60 play the role of electrical connection on the one hand, and also play the role of limiting and fixing on the other hand.
  • the circuit board 40 is directly fixed and limited with the frame 30.
  • the skeleton 30 is provided with a protruding locking structure 30b, which is used for the circuit board 40 to be directly fixed to the skeleton 30 and limited. After matching, it is limited and fixed with the frame 30 by the protruding locking structure 30b.
  • the third electrical connector (70a; 70b) is fixedly connected to the circuit board 40. So far, the battery cell 20, the skeleton 30 and the circuit board 40, as well as the first electrical connector 50, the second electrical connector 60 and the third electrical connector (70a; 70b) are connected as a whole, and the integrated structure is integral, as shown by 200 in FIG. 3 , which is directly matched with the inner cavity of the housing 10 in a sliding limit, the assembly is simple and convenient, and the integrated structure and the inner cavity are further limited in position Effectively prevent the internal shaking of the battery pack.
  • the integrated battery cell 20 , the skeleton 30 and the circuit board 40 , as well as the first electrical connector 50 , the second electrical connector 60 and the third electrical connector ( 70 a ; 70 b ) are connected along the length direction, that is, the axis of the battery cell 10 The direction is matched with the sliding limit of the inner cavity of the housing 10 .
  • the integrated cell 20 , the skeleton 30 and the circuit board 40 , as well as the first electrical connector 50 , the second electrical connector 60 and the third electrical connector ( 70 a ; 70 b ) are combined to form an integrated structure 200 .
  • the integrated structure 200 is inserted into the inner cavity of the housing 10 as a whole along the direction indicated by the arrow m, and then the end caps are fitted together to seal.
  • the frame 30 is provided with a protruding sliding key 80 extending linearly along its length direction, and a matching sliding groove 10a is arranged on the inner wall of the housing 10; or;
  • the frame 30 is provided with a concave sliding slot extending linearly along its length direction, and a corresponding protruding sliding key is arranged on the inner wall of the housing 10 .
  • the battery cell 20, the skeleton 30 and the circuit board 40, as well as the first electrical connector 50, the second electrical connector 60 and the third electrical connector (70a; 70b) are combined to form an integrated structure 200, and there is basically no mutual displacement, and
  • the skeleton 30 is provided with a protruding sliding key 80 extending linearly along its length direction, and a matching sliding groove 10a is arranged along the inner wall of the casing 10 for linear insertion, so that , the integrated structure 200 will further form a substantially non-displacement connection structure with the casing 10 , and at this time, the end caps are sealed and fixed for encapsulation, and the entire interior of the battery pack will not be shaken.
  • first electrical connector 50 and the second electrical connector 60 are respectively extended laterally outwards, bent and attached to the outer surface of the frame 30 and extended to the circuit board 40 to be connected to the circuit board 40 .
  • the cell 20 is positioned in the skeleton 30 , the two ends of the skeleton 30 corresponding to the electrodes at the two ends of the cell 20 are respectively provided with connection openings O1 and O2 , the first electrical connector 50 and the second electrical connector 60
  • the starting ends of the battery cores 20 are connected to the electrodes at the two ends of the battery cell 20 at the connection openings O1 and O2 respectively.
  • the terminal electrode is connected by spot welding, and the spot welding connection part is shown as the spot welding section 50a in FIG. 4 ;
  • first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward lateral direction e, are bent, and then are attached to the outer surface of the skeleton 30 to extend and connect to the circuit board 40 .
  • the connector 50 and the second electrical connector 60 respectively extend and protrude along the outward lateral direction e, and are bent to form a laterally extending bent section 50b, as shown in area A in FIG. 4 .
  • the above-mentioned structural design enables the first electrical connector 50 and the second electrical connector 60 to form a spaced distribution with the skin of the battery cell.
  • the first electrical connector 50 and the second electrical connector 60 are connected to the electrodes of the battery core 20 and are obviously conductive materials.
  • the support frame 40 is made of insulating material, so the conductive first electrical connector 50 and the second electrical connector 60 and the skin of the cell 20 are separated by the insulating material, so even if the skin of the cell 20 is damaged , and no short-circuit accident will occur, and it plays the role of safety insulation protection.
  • the first electrical connector 50 and the second electrical connector 60 extend along the outward lateral direction e respectively. Protruding and bending to form a transversely extending bending section can also effectively attenuate vibration, avoiding the impact of the large vibration involved in the use of the power tool on the interior.
  • the first electrical connector 50 and the second electrical connector 60 respectively include extension sections 50c and 60c extending along the axial length direction of the battery cell 20 opposite to each other; the extension sections 50c and 60c and A spacing of at least 2 mm is maintained between circuit boards 40 .
  • both the first electrical connector 50 and the second electrical connector 60 are made of conductive materials, maintaining a distance of at least 2 mm between the extension sections 50c and 60c and the circuit board 40 can effectively prevent the first electrical connector 50 and the Contact occurs between the second electrical connector 60 and the electronic components on the circuit board 40 .
  • the distance between the extension sections 50c and 60c and the circuit board 40 is not greater than 4 mm, so as to avoid the battery pack from being too high in the radial direction, and to ensure the compact structure of the battery pack.
  • the first electrical connector 50 and the second electrical connector 60 respectively include extension sections 50c and 60c that extend toward each other along the axial length direction of the battery cell 20, and the extension sections 50c and 60c are spaced apart from each other.
  • the separation distance L is not less than 3mm.
  • the skeleton 30 extends along the axial length direction of the battery cell 20, and extends outward in a direction perpendicular to the axial length direction of the battery core 20 to form a mounting portion (30a; 30b);
  • the mounting parts 30a and 30b are suitable for positioning, mounting and connecting the battery cell 20 and the circuit board 40 respectively;
  • the mounting portion 30a is suitable for positioning and mounting the circuit board 40, especially the circuit board 40 on which the third electrical connector (70a; 70b) is fixed, and the upwardly protruding portion of the mounting portion 30a at least partially wraps the third electrical connector (70a; 70b) side.
  • the mounting portion 30b is suitable for positioning and installing the battery cell 20. Specifically, the mounting portions 30b are respectively arranged at both ends of the electrodes of the corresponding battery cell 20. The two opposite mounting portions 30b are distributed along the axis of the battery cell 20, and are opposite to the axis direction of the battery cell 20. Limit.
  • the skeleton 30 further includes an arc-shaped groove 30c located between the mounting parts 30b and extending along the axial length direction of the battery cell 20; wherein the arc-shaped groove 30c corresponds to the arc-shaped surface of the battery core 20, and the arc-shaped groove 30c Combined with the inner wall of the housing 10 to form a limit in the radial direction of the cell.
  • the width of the arc-shaped groove 30c is smaller than the outer diameter of the battery cell 20, so as to prevent the radial width of the battery pack from being larger, so as to reduce the external size of the battery pack as much as possible.
  • a battery pack 100 includes a cell 20 and a circuit board 40 , as well as a first electrical connector 50 and a second electrical connector 60 ; the circuit board 40 and the cell 20 are spaced apart
  • the first electrical connector 50 is arranged at one end of the battery core 20 and is connected to the circuit board 40;
  • the second electrical connector 60 is arranged at the opposite end of the battery core 20, and is also connected to the circuit board 40, and is connected to the first
  • An electrical connector 50 is spaced apart, and the spaced distance L is not less than 3 mm.
  • the above-mentioned battery core 20 is preferably a 21700 battery core or a 18650 battery core.
  • the first electrical connector 50 and the second electrical connector 60 are made of conductive materials, preferably nickel sheets.
  • the first electrical connector 50 and the second electrical connector 60 correspond to The connection between the positive and negative electrodes of the cell is preferably fixed by spot welding.
  • the battery cell 20 is limited by the skeleton 30 , and the positive and negative ends of the battery cell 20 are connected to the circuit board 40 through the first electrical connector 50 and the second electrical connector 60 . Both ends of the two electrical connectors 60 are respectively fixedly connected to the battery core 20 and the circuit board 40 , specifically by welding, so as to realize the position limit and fixation of the battery core 20 and the skeleton 30 .
  • the first electrical connector 50 and the second electrical connector 60 play the role of electrical connection on the one hand, and also play the role of limiting and fixing on the other hand.
  • the circuit board 40 is directly fixed and limited with the frame 30.
  • the skeleton 30 is provided with a protruding locking structure 30b, which is used for the circuit board 40 to be directly fixed and limited to the skeleton 30.
  • the skeleton 30 is correspondingly configured with the installation position of the circuit board 40, the circuit board and the installation position After matching, it is limited and fixed with the frame 30 by the protruding locking structure 30b.
  • the above technical solution connects the first electrical connector and the second electrical connector corresponding to the positive and negative ends of the cell to the circuit board, respectively, and is arranged on the circuit board at intervals, and the interval distance is at least 3mm, and this arrangement can effectively Ensure the discharge safety of the battery pack.
  • the first electrical connector 50 and the second electrical connector 60 respectively extend toward each other along the axial length direction of the cell 20 .
  • the battery cell 20 is positioned in the skeleton 30 , the skeleton 30 is provided with connection openings O1 and O2 respectively at both ends of the electrode corresponding to the battery cell 20 , and the starting ends of the first electrical connector 50 and the second electrical connector 60 are respectively connected to The openings O1 and O2 are electrically connected to the electrodes at both ends of the battery core 20.
  • the first electrical connector 50 and the second electrical connector 60 are made of metal nickel sheets, which are connected to the electrodes at both ends of the battery core 20 by spot welding.
  • the spot welding connection part is shown as the spot welding section 50a in Fig. 10;
  • first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward lateral direction e, are bent, and then are attached to the outer surface of the skeleton 30 to extend and connect to the circuit board 40 .
  • the connector 50 and the second electrical connector 60 respectively extend and protrude along the outward lateral direction e, and are bent to form a laterally extending bent section 50b, as shown in area A in FIG. 10 .
  • the above-mentioned structural design enables the first electrical connector 50 and the second electrical connector 60 to form a spaced distribution with the skin of the battery cell.
  • the first electrical connector 50 and the second electrical connector 60 are connected to the electrodes of the battery core 20 and are obviously conductive materials.
  • the support frame 40 is made of insulating material, so the conductive first electrical connector 50 and the second electrical connector 60 are separated from the skin of the cell 20 by the insulating material, so even if the skin of the cell 20 is damaged , and no short-circuit accident will occur, and it plays the role of safety insulation protection.
  • the first electrical connector 50 and the second electrical connector 60 extend along the outward lateral direction e respectively. Protruding and bending to form a transversely extending bending section can also effectively attenuate vibration, avoiding the impact of the large vibration involved in the use of the power tool on the interior.
  • the battery pack 100 further includes a third electrical connector ( 70 a , 70 b ), which is arranged on the circuit board 40 and is electrically connected to the first electrical connector 50 or the second electrical connector 50
  • the device 60 is adjacent and is configured to be electrically connected to the powered device so that power from the cell 20 can be provided to the powered device through the third electrical connectors (70a, 70b).
  • the third electrical connector (70a; 70b) is fixedly connected to the circuit board 40. So far, the battery cell 20, the skeleton 30 and the circuit board 40, as well as the first electrical connector 50, the second electrical connector 60 and the third electrical connector (70a; 70b) are connected as a whole, the integrated structure is integral, as shown by 200 in FIG. 6, it is directly matched with the inner cavity of the housing 10 for sliding limit, the assembly is simple and convenient, and the integrated structure and the inner cavity are further limited in position Effectively prevent the internal shaking of the battery pack.
  • the third electrical connectors (70a, 70b) include not only a USB interface 70b suitable for 3C electronic products, but also a high-current discharge terminal 70a suitable for power tools; wherein;
  • the third electrical connectors (70a, 70b) include a pair of adjacent electrical connectors that provide positive and negative poles; in particular, the third electrical connector 70a is suitable for use with power tools, including A pair of adjacent electrical connectors that provide positive and negative electrodes.
  • a battery pack 100 includes a battery cell 20 and a circuit board 40, as well as a first electrical connector 50 and a second electrical connector 60, wherein the first electrical connector 50, It is arranged at one end of the cell 20 and is connected to the circuit board 40; the second electrical connector 60 is arranged at the opposite end of the cell 20, and is also connected to the circuit board 40, and is connected to the first electrical connector 50 spaced apart; the first electrical connector 50 and the second electrical connector 60 respectively include extension sections 50c and 60c that extend toward each other along the axial length direction of the cell 20 ; Keep at least 2mm spacing, that is, L1 ⁇ 2mm.
  • the first electrical connector and the second electrical connector correspondingly connected to the positive and negative ends of the cell are respectively extended and connected to the circuit board, and the first electrical connector and the second electrical connector are prevented from being connected with the electronic components on the circuit board.
  • the components are in contact, resulting in a short circuit, so the extension sections of the first electrical connector and the second electrical connector are arranged to maintain a distance of at least 2 mm between the circuit board and the battery pack to ensure the discharge safety of the battery pack.
  • the distance between the extension section 50c and the extension section 60c and the circuit board 40 is not greater than 4mm, ie L1 ⁇ 4mm.
  • the battery pack 100 further includes a fourth electrical connector 70c
  • the circuit board 40 is provided with an installation opening 40a corresponding to it
  • the fourth electrical connector 70c is embedded in the installation opening 40a, and is connected with the circuit
  • the upper surface of the board 40 is substantially flat, and the fourth electrical connector 70c is configured to be connectable to a charging source in order to provide charging to the cells 20 through the fourth electrical connector 70c.
  • the above-mentioned fourth electrical connector 70c preferably adopts a bidirectional charging and discharging interface, such as a type-c interface, through which not only charging can be provided to the battery cell 20, but also external discharge through the type-c interface can be used for 3C type. Electrical equipment uses electricity.
  • the battery pack 100 further includes a third electrical connector 70a connected to the circuit board 40, which is adjacent to the fourth electrical connector 70c, located above the fourth electrical connector 70c and arranged side by side above and below the fourth electrical connector 70c, and the third electrical connector 70c
  • the electrical connector 70a is configured to be electrically connected to the powered device so that power from the cell 20 can be provided to the powered device through the third electrical connector 70a.
  • the above-mentioned third electrical connector 70a is suitable for electric power tools, and preferably adopts pin-type terminals, the pin-type terminals at least include a pair of adjacent electrical connectors, and a pair of adjacent electrical connectors provide positive and negative electrodes , used to meet high current discharge.
  • the battery pack 100 includes a housing 10 , and a battery cell 20 and a circuit board 40 built into the housing 10 ;
  • a first electrical connector 50 arranged at one end of the battery cell 20 and connected to the circuit board 40;
  • the second electrical connector 60 is arranged at the opposite end of the battery cell 20 and connected to the circuit board 40;
  • a third electrical connector (70a, 70b) configured to be electrically connected to the electrical device such that power from the cell 20 can be provided to the electrical device through the third electrical connector (70a, 70b);
  • a fourth electrical connector 70c configured to be connectable to a charging source to provide charging to the cells 20 through the fourth electrical connector 70c;
  • the third electrical connector (70a, 70b) and the fourth electrical connector 70c are connected to the same side of the circuit board 40, and the circuit board 40 is opposite to the first electrical connector 50 and/or the second electrical connector below it A distance of at least 2 mm is maintained between 60, and a distance of no more than 7 mm is maintained between the circuit board 40 and the inner wall of the housing 10 opposite to it.
  • the distance between the circuit board 40 and the first electrical connector 50 and/or the second electrical connector 60 opposite to the lower side is not greater than 4 mm.
  • a distance of at least 5 mm is maintained between the circuit board 40 and the inner wall of the housing 10 facing above it.
  • the extension sections of the first electrical connector and the second electrical connector are respectively set to maintain a distance of at least 2mm from the circuit board to ensure the discharge safety of the battery pack; at the same time, the technical solution configures the third electrical connector and the first electrical connector Four electrical connectors, wherein the third connector is configured to be electrically connected to the powered device so that power from the cells can be supplied to the powered device through the third electrical connector; the fourth electrical connection is configured to be electrically connectable to the powered device connected to a charging source, so as to provide charging to the battery cell through the fourth electrical connector; and the third electrical connector and the fourth electrical connector are connected to the same side of the circuit board, in order to avoid the overall size of the battery pack being too large, and at the same time It does not affect the layout of the third electrical connector and the fourth electrical connector, so the distance between the circuit board and the inner wall of the housing opposite to the upper side of the circuit board is not greater than 7 mm.
  • a battery pack structure 100 includes a battery cell 20 , a skeleton 30 and a first circuit board 40 a , and the battery cell 20 , the skeleton 30 and the first circuit board 40 a along the diameter of the battery core 20 Connect the settings in turn in the direction;
  • the skeleton 30 extends along the axial length of the battery core 20 and includes:
  • the second mounting portion 30c which extends and protrudes outward along the axial length direction of the battery core 20, is suitable for positioning, mounting and connecting to the second circuit board 40b;
  • the second circuit board 40b is communicatively connected to the first circuit board 40a.
  • the first circuit board 40a is the main control board of the battery pack and has functions such as BMS management, and the second circuit board 40b is a sub-board on which a wake-up switch and/or lamp beads and other electronic components are arranged.
  • the battery core, the skeleton, and the first circuit board are sequentially connected and arranged along the radial direction of the battery core, and the skeleton extends along the axial length direction of the battery core, and the skeleton is perpendicular to the axis length direction of the battery core.
  • the first mounting portion and the second mounting portion are respectively extended and protruded outward along the axial length direction of the cell, respectively used for positioning, mounting and connecting the cell and the first circuit board, and positioning, mounting and connecting the second circuit board, and The communication connection between the second circuit board and the first circuit board is maintained, and the structure and arrangement thereof are novel and concise.
  • the first mounting parts include first parts 30 a located at both ends of the battery cell 20 and in contact therewith, and the first part 30 a at least partially covers the battery core 20 . and a second portion 30b located on the edge side of the first circuit board 40a and connected to the limit, the second portion 30b supports the limit connection of the first circuit board 40a, so that the first circuit board 40a is connected to the body of the skeleton 30 interval setting.
  • the above-mentioned first parts 30a are correspondingly distributed at both ends of the long axis direction of the battery core 20, and the distance between the two is suitable for just matching the axial length of the battery core 20, and the battery core is realized by the first parts 30a at both ends.
  • 20 is limited in the direction of the long axis, and the height of the first portion 30 a in the radial direction of the cell 20 preferably corresponds to the height of the radial end face of the cell 20 .
  • the above-mentioned second part 30b preferably adopts a locking structure, which is used for the first circuit board 40a to be directly fixed and limited with the skeleton 30.
  • the skeleton 30 is correspondingly configured with the installation position of the first circuit board 40a. It is limited and fixed with the frame 30 by the protruding locking structure 30b.
  • the battery cell 20 is limited by the skeleton 30 .
  • the positive and negative ends of the battery cell 20 are connected to the first circuit board 40 a through the first electrical connector 50 and the second electrical connector 60 .
  • the two ends of the electrical connector 50 and the second electrical connector 60 are respectively fixedly connected to the battery cell 20 and the circuit board 40 , specifically by welding, so as to realize the limiting and fixing of the battery core 20 and the skeleton 30 .
  • the above-mentioned battery core 20 is preferably a 21700 battery core or a 18650 battery core.
  • the first electrical connector 50 and the second electrical connector 60 are made of conductive materials, preferably nickel sheets.
  • the first electrical connector 50 and the second electrical connector 60 correspond to The connection between the positive and negative electrodes of the cell is preferably fixed by spot welding.
  • the above-mentioned first electrical connector 50 and second electrical connector 60 play an electrical connection role on the one hand, and also play a limiting and fixing role on the other hand.
  • the first electrical connector 50 and the second electrical connector 60 extend toward each other along the axial length direction of the cell 20 respectively.
  • the battery cell 20 is positioned in the skeleton 30 , the skeleton 30 is provided with connection openings O1 and O2 respectively at both ends of the electrode corresponding to the battery cell 20 , and the starting ends of the first electrical connector 50 and the second electrical connector 60 are respectively connected to The openings O1 and O2 are electrically connected to the electrodes at both ends of the battery core 20.
  • the first electrical connector 50 and the second electrical connector 60 are made of metal nickel sheets, which are connected to the electrodes at both ends of the battery core 20 by spot welding.
  • the spot welding connection part is shown as the spot welding section 50a in Fig. 14;
  • first electrical connector 50 and the second electrical connector 60 respectively extend and protrude along the outward lateral direction e, are bent, and then are attached to the outer surface of the frame 30 to extend and connect to the first circuit board 40a.
  • An electrical connector 50 and a second electrical connector 60 respectively extend and protrude along the outward lateral direction e, and are bent to form a laterally extending bent section 50b, as shown in area A in FIG. 14 .
  • the above-mentioned structural design enables the first electrical connector 50 and the second electrical connector 60 to form a spaced distribution with the skin of the battery cell.
  • the first electrical connector 50 and the second electrical connector 60 are connected to the electrodes of the battery core 20 and are obviously conductive materials.
  • the support frame 40 is made of insulating material, so the conductive first electrical connector 50 and the second electrical connector 60 and the skin of the cell 20 are separated by the insulating material, so even if the skin of the cell 20 is damaged , and no short-circuit accident will occur, and it plays the role of safety insulation protection.
  • the first electrical connector 50 and the second electrical connector 60 are respectively along the outward lateral direction e Extending and protruding and bending to form a laterally extending bending section can also effectively attenuate vibration, avoiding the impact of the large vibration involved in the use of the power tool on the interior.
  • the second mounting portion 30c is located on the edge side of the second circuit board 40b and is connected to the edge of the second circuit board 40b.
  • the second mounting portion 30c preferably adopts a locking structure.
  • the second mounting portion 30c is adjacent to the end of the battery cell 20. Specifically, the second mounting portion 30c is formed on the outer side of the first portion 30a, that is, the second mounting portion 30c is formed by the first portion 30a. The outer side is formed to extend and protrude outward.
  • the second mounting portion 30c is arranged at the position of the first portion 30a of the first mounting portion ( 30a , 30b ), and the first portion 30a is located at both ends of the cell 20 and is in contact with the end of the cell 20 .
  • the second mounting portion 30c is located at the edge portion of the first portion 30a, which facilitates the assembly and positioning of the second circuit board 40b.
  • the battery pack structure 100 includes a casing 10 , the battery cells 20 , the skeleton 30 and the first circuit board 40 a which are located in the casing 10 and are sequentially connected along the radial direction of the battery cells 20 ;
  • the skeleton 30 extends and protrudes outward along the axial length direction of the battery core 10 to form a second mounting portion 30c;
  • the second mounting portion 30c is adapted to be positioned, mounted and connected to the second circuit board 40b;
  • the second circuit board 40b is communicatively connected to the first circuit board 40a, and at least includes a wake-up switch 40b-1;
  • the housing 10 includes an end cover 10a corresponding to the second circuit board 40b, a button 10a-1 is arranged at the position of the end cover 10a corresponding to the wake-up switch 40b-1, and the inner side of the button 10a-1 is provided with a wake-up switch 40b-1 suitable for Contacting studs p.
  • the second circuit board equipped with the wake-up switch is arranged in the longitudinal direction of the axis of the battery cell, and a button is arranged at the corresponding end cover.
  • a button is arranged at the corresponding end cover.
  • the button 10a-1 is suitable for elastic deformation, and/or the outer surface of the button 10a-1 is substantially flat with the outer surface of the end cap 10a, as shown in FIG. 15 .
  • the battery pack structure 100 further includes a first mounting portion (30a, 30b), and the first mounting portion (30a, 30b) includes a first portion 30a located at both ends of the battery cell 20 and in contact therewith, and the first portion 30a at least partially Covering the end of the cell 20; and a second portion 30b located on the edge side of the first circuit board 40a and connected to the limit, the second portion 30b supports the limit connection of the first circuit board 40a, so that the first circuit board 40a It is spaced apart from the body of the skeleton 30 .
  • the second mounting portion 30c is arranged at the position of the first portion 30a of the first mounting portion (30a, 30b), and is limit-connected to the edge side of the second circuit board 40b.
  • the battery pack structure 100 includes: the battery cells 20 , the skeleton 30 and the first circuit board 40 a which are sequentially connected and arranged along the radial direction of the battery cells 20 ;
  • the skeleton 30 extends along the axial length direction of the battery core 20, and extends outward in a direction perpendicular to the axial length direction of the battery core 20 to form a first mounting portion (30a, 30b);
  • the first mounting parts (30a, 30b) are suitable for positioning, mounting and connecting the cell 20 and the first circuit board 40a respectively;
  • the skeleton 30 further includes an arc-shaped groove 30d located between the first mounting parts (30a, 30b) and extending along the axial length direction of the battery core 20;
  • the arc-shaped groove 30d corresponds to the arc-shaped surface of the battery cell 20 .
  • the arc-shaped slot 30d corresponds to the arc-shaped surface of the battery cell 20, and the arc-shaped slot 30d is combined with the inner wall of the casing 10 to form a limit in the radial direction of the battery cell.
  • the width of the arc-shaped groove 30c is smaller than the outer diameter of the battery cell 20, so as to prevent the radial width of the battery pack from being larger, so as to reduce the external size of the battery pack as much as possible.
  • the battery core, the skeleton and the first circuit board are connected and arranged in sequence along the radial direction of the battery core, and in the radial direction of the battery core, that is, perpendicular to the axial length direction of the battery core, they extend and protrude outward to form the first circuit board.
  • the core is limited, and at the same time, the arc groove is used to limit the position in the radial direction.

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Abstract

一种电池包，其包括：壳体(10)；沿电芯径向方向依次相互连接的电芯(20)，骨架(30)和电路板(40)；第一电连接器(50)和第二电连接器(60)，其分别布置于电芯轴向的正负极两端，并分别连接至电路板(40)；第三电连接器(70a,70b)，其连接于电路板(40)，并被配置为电连接到用电设备，使得来自所述电芯(20)的电力可以通过第三电连接器(70a,70b)提供给用电设备；连接一体的所述电芯(20)，骨架(30)和电路板(40)，以及第一电连接器(50)，第二电连接器(60)和第三电连接器(70a,70b)与壳体(10)的内腔滑动限位配合。该技术方案装配结构简单，能够有效避免电池包内部晃动。

Description

一种电池包 技术领域
本实用新型涉及一种电池包。
背景技术
为了提高电动工具的通用性，使电动工具的工作范围不受插座位置的限制，市场上很多无绳电动工具。无绳电动工具具有携带方便、操作简单、功能多样等特点，可以大大减轻劳动强度，提高工作效率，实现手工操作机械化，因而被广泛应用于建筑、住房装潢、汽车、机械、电力、桥梁、园艺等领域。传统适于供无绳电动工具电源用的电池包内部为了避免晃动，其装配结构较为复杂。
实用新型内容
本实用新型的目的在于提供一种装配结构简单，能够有效避免电池包内部晃动的电池包。
本实用新型提供的一种电池包，其包括：
壳体；
沿电芯径向方向依次相互连接的电芯，骨架和电路板；
第一电连接器和第二电连接器，其分别布置于所述电芯轴向的正负极两端，并分别连接至所述电路板；
第三电连接器，其连接于所述电路板，并被配置为电连接到用电设备，使得来自所述电芯的电力可以通过第三电连接器提供给用电设备；
连接一体的所述电芯，骨架和电路板，以及所述第一电连接器，第二电连接器和第三电连接器与所述壳体的内腔滑动限位配合。
进一步地，所述连接一体的电芯，骨架和电路板，以及第一电连接器，第二电连接器和第三电连接器沿着长度方向与所述壳体的内腔滑动限位配合。
进一步地，所述骨架上设置有凸出的，沿其长度方向线性延伸的滑键，所述壳体的内壁上对应布置有与之匹配的滑槽；或；
所述骨架上设置有凹陷的，沿其长度方向线性延伸的滑槽，所述壳体的内壁上对应布置有与之匹配的凸出的滑键。
进一步地，所述第一电连接器和所述第二电连接器分别向外横向延伸折弯贴于所述骨架的外表面并向所述电路板延伸连接到所述电路板。
进一步地，所述第一电连接器和所述第二电连接器分别包括沿着所述电芯的轴线长度方向相向延伸的延伸段；所述延伸段与所述电路板之间保持至少2mm间距。
进一步地，所述第一电连接器和所述第二电连接器分别包括沿着所述电芯的轴线长度方向相向延伸的延伸段，所述延伸段相互间隔，其间隔距离不小于3mm。
进一步地，所述延伸段与所述电路板之间保持不大于4mm间距。
进一步地，所述骨架沿着所述电芯的轴线长度方向延伸，并在垂直于所述电芯的轴线长度方向上向外延伸突出形成安装部；
所述安装部适于分别定位安装连接所述电芯和所述电路板；
所述骨架还包括位于所述安装部之间，沿着所述电芯的轴线长度方向延伸的弧形槽；
所述弧形槽与所述电芯的弧形面相对应。
进一步地，所述弧形槽的宽度小于所述电芯的外径。
较现有技术，本实用新型的有益技术效果在于：
该技术方案将电芯，骨架和电路板三者沿着电芯径向方向依次相互连接，其中，电芯通过骨架限位，并通过第一电连接器和第二电连接器将电芯正负极两端连接至电路板，第一电连接器和第二电连接器各两端分别与电芯和电路板固定连接，具体采用焊接连接方式，如此实现电芯和骨架的限位固定，其中，第一电连接器和第二电连接器一方面起到电连接作用，另一方面还起到限位固定的作用，另外，电路板直接与骨架固定限位，第三电连接器固定连接于电路板，至此，电芯，骨架和电路板，以及第一电连接器，第二电连接器和第三电连接器连接一体，一体后的结构整体直接与壳体的内腔滑动限位配合，装配简单方便，并且一体后的结构与内腔进一步限位有效防止电池包内部晃动。
本实用新型的目的在于提供一种能够有效避免电池包内部晃动的电池包。
本实用新型提供的一种电池包，其特征在于，包括：
壳体；
沿电芯径向方向依次相互连接的电芯，骨架和电路板；
第一电连接器和第二电连接器，其分别布置于所述电芯轴向的正负极两端，并分别连接至所述电路板；
第三电连接器，其连接于所述电路板，并被配置为电连接到用电设备，使得来自所述电芯的电力可以通过第三电连接器提供给用电设备；
所述骨架与所述壳体的内腔滑动限位配合。
进一步地，所述电芯，骨架和电路板，以及所述第一电连接器，第二电连接器和第三电连接器相互连接组装连接一体。
进一步地，所述骨架上设置有凸出的，沿其长度方向线性延伸的滑键，所述壳体的内壁上对应布置有与之匹配的滑槽；或；
所述骨架上设置有凹陷的，沿其长度方向线性延伸的滑槽，所述壳体的内壁上对应布置有与之匹配的凸出的滑键。
较现有技术，本实用新型的有益技术效果在于：
该技术方案将电芯，骨架和电路板三者沿着电芯径向方向依次相互连接，其中，电芯和电路板分别通过骨架限位，限位连接后通过骨架与壳体的内腔滑动限位配合能够有效避免电池包内部晃动。
附图说明
为了更清楚地说明本实用新型具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本实用新型的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1：本实用新型具体实施例1结构示意图；
图2：本实用新型具体实施例1结构爆炸示意图；
图3：本实用新型具体实施例1结构装配示意图；
图4：本实用新型具体实施例1部分结构爆炸示意图；
图5：本发明具体实施例2结构立体图；
图6：本发明具体实施例2结构爆炸图；
图7：本发明具体实施例2结构俯视图；
图8：本发明具体实施例2结构纵向剖视图；
图9：本发明具体实施例2另一爆炸结构示意图；
图10：本发明具体实施例2电芯、骨架、电路板分解结构示意图；
图11：本发明具体实施例2另一视角结构爆炸示意图；
图12：本实用新型具体实施例3结构示意图；
图13：本实用新型具体实施例3结构爆炸图；
图14：本实用新型具体实施例3部分结构爆炸图；
图15：本实用新型具体实施例3结构剖视图；
图16：本实用新型具体实施例3另一视角结构爆炸图。
具体实施方式
下面将结合附图对本实用新型的技术方案进行清楚、完整地描述，显然，所描述的实施例是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
【实施例1】
参照图1，图2和图3所示，一种电池包100，其包括壳体10，电芯20，骨架30和电路板40，电芯20，骨架30和电路板40沿电芯20径向方向依次相互连接的；还包括；
分别布置于电芯20轴向的正负极两端的第一电连接器50和第二电连接器60，第一电连接器50和第二电连接器60分别连接至电路板40；
以及，连接于电路板40的第三电连接器(70a；70b)，第三电连接器(70a；70b)被配置为电连接到用电设备，使得来自电芯20的电力可以通过第三电连接器(70a；70b)提供给用电设备；
连接一体的电芯20，骨架30和电路板40，以及第一电连接器50，第二电连接器60和第三电连接器(70a；70b)与壳体10的内腔滑动限位配合。
电芯20通过骨架30限位，并通过第一电连接器50和第二电连接器60将电芯20正负极两端连接至电路板40，第一电连接器50和第二电连接器60各两端分别与电芯20和电路板40固定连接，具体采用焊接连接方式，如此实现电芯20和骨架30的限位固定。
其中，第一电连接器50和第二电连接器60一方面起到电连接作用，另一方面还起到限位固定的作用，另外，电路板40直接与骨架30固定限位，具体参照图2所示，骨架30上配置有凸出的锁扣结构30b，用于电路板40直接与骨架30固定限位，当然骨架30上对应配置有电路板40的安装位，电路板与安装位匹配后，通过凸出的锁扣结构30b将其与骨架30限位固定。
第三电连接器(70a；70b)固定连接于电路板40，至此，电芯20，骨架30和电路板40，以及第一电连接器50，第二电连接器60和第三电连接器(70a；70b)连接一体，一体后的结构整体，如图3中200所示，直接与壳体10的内腔滑动限位配合，装配简单方便，并且一体后的结构与内腔进一步限位有效防止电池包内部晃动。
连接一体的电芯20，骨架30和电路板40，以及第一电连接器50，第二电连接器60和第三电连接器(70a；70b)沿着长度方向，即电芯10的轴线方向与壳体10的内腔滑动限位配合。
如图2所示，连接一体的电芯20，骨架30和电路板40，以及第一电连接器50，第二电连接器60和第三电连接器(70a；70b)组合形成一体结构200，装配时，一体结构200沿着箭头m所示方向整体插入壳体10的内腔，然后配合端盖固封。
参照图2所示，骨架30上设置有凸出的，沿其长度方向线性延伸的滑键80，壳体10的内壁上对应布置有与之匹配的滑槽10a；或；
骨架30上设置有凹陷的，沿其长度方向线性延伸的滑槽，壳体10的内壁上对应布置有与之匹配的凸出的滑键。
电芯20，骨架30和电路板40，以及第一电连接器50，第二电连接器60和第三电连接器(70a；70b)组合形成一体结构200，相互之间基本没有位移，与壳体10组装配合时，通过骨架30上设置有凸出的，沿其长度方向线性延伸的滑键80，沿着壳体10的内壁上对应布置有与之匹配的滑槽10a线性插入，如此，一体结构200将与壳体10进一步形成基本无位移的连接结构，此时加以端盖密封固定连接进行封装，电池包整体内部将无晃动产生。
另外，第一电连接器50和第二电连接器60分别向外横向延伸折弯贴于骨架30的外表面并向电路板40延伸连接到电路板40。
具体地，参考图4所示，电芯20定位于骨架30内，骨架30对应电芯20的两端电极分别设有连接开口O1和O2，第一电连接器50和第二电连接器60的起始端分别对应在连接开口O1和O2处于电芯20的两端电极电连接，具体地，第一电连接器50和第二电连接器60采用金属镍片，其与电芯20的两端电极点焊连接，其点焊连接部分如图4中点焊段50a所示；
然后，第一电连接器50和第二电连接器60分别沿着向外横向方向e延伸突出，并折弯，然后贴于骨架30的外表面向电路板40延伸并与之连接，第一电连接器50和第二电连接器60分别沿着向外横向方向e延伸突出，并折弯，形成横向延伸折弯段50b，如图4中A区所示。
上述结构设计使得第一电连接器50和第二电连接器60与电芯表皮形成间隔分布，第一电连接器50和第二电连接器60与电芯20电 极相连，显然是导电材料，本技术方案中支撑骨架40为绝缘材料，故，导电的第一电连接器50和第二电连接器60与电芯20表皮之间是由绝缘材料隔开，因此，即使电芯20表皮破损，也不会发生短路事故，起到安全绝缘保护的作用。
另外，由于此电池包100适用于电动工具，而电动工具的使用过程经常涉及到的振动较大，因此，第一电连接器50和第二电连接器60分别沿着向外横向方向e延伸突出，并折弯，形成横向延伸折弯段还能起到有效衰减振动的作用，避免电动工具使用过程中涉及到的较大振动对内部构成影响。
请继续参照图2和图4所示，第一电连接器50和第二电连接器60分别包括沿着电芯20的轴线长度方向相向延伸的延伸段50c和60c；延伸段50c和60c与电路板40之间保持至少2mm间距。
由于第一电连接器50和第二电连接器60都是由导电材料制作而成，因此在延伸段50c和60c与电路板40之间保持至少2mm间距可以有效避免第一电连接器50和第二电连接器60与电路板40上的电子件之间发生接触。
进一步地，延伸段50c和60c与电路板40之间保持不大于4mm间距，避免电池包在径向方向上高度较大，保证电池包结构紧凑。
另外，保证电池包用电安全，第一电连接器50和第二电连接器60分别包括沿着电芯20的轴线长度方向相向延伸的延伸段50c和60c，延伸段50c和60c相互间隔，其间隔距离L不小于3mm。
参照图2和图4所示，骨架30沿着电芯20的轴线长度方向延伸，并在垂直于电芯20的轴线长度方向上向外延伸突出形成安装部(30a；30b)；
安装部30a和30b适于分别定位安装连接电芯20和电路板40；
具体地，安装部30a适于定位安装电路板40，特别是固定有第三电连接器(70a；70b)的电路板40，安装部30a向上凸出延伸的部分至少部分包裹第三电连接器(70a；70b)的侧边。
安装部30b适于定位安装电芯20，具体地，对应电芯20电极的两端分别布置有安装部30b，两个相对的安装部30b沿着电芯20轴线分布，对电芯20轴线方向进行限位。
进一步地，骨架30还包括位于安装部30b之间，沿着电芯20的轴线长度方向延伸的弧形槽30c；其中，弧形槽30c与电芯20的弧形面相对应，弧形槽30c与壳体10内壁组合形成电芯径向方向限位。
而且，弧形槽30c的宽度小于电芯20的外径，避免电池包的径向宽度较大，以尽量减小电池包外在尺寸大小。
【实施例2】
请另外参照图5至图11所示，一种电池包100，其包括电芯20和电路板40，以及第一电连接器50和第二电连接器60；电路板40与电芯20间隔设置；第一电连接器50布置于电芯20的一端，并连接至电路板40；第二电连接器60布置于电芯20相对的另一端，并也连接至电路板40，且与第一电连接器50相间隔，其间隔距离L不小于3mm。
上述电芯20优选采用21700电芯或18650电芯，第一电连接器50和第二电连接器60为导电材质，优选采用镍片，第一电连接器50和第二电连接器60对应电芯正负极连接处优选采用点焊连接固定。
具体地，电芯20通过骨架30限位，并通过第一电连接器50和第二电连接器60将电芯20正负极两端连接至电路板40，第一电连接器50和第二电连接器60各两端分别与电芯20和电路板40固定连接，具体采用焊接连接方式，如此实现电芯20和骨架30的限位固定。
其中，第一电连接器50和第二电连接器60一方面起到电连接作用，另一方面还起到限位固定的作用，另外，电路板40直接与骨架30固定限位，具体参照图9所示，骨架30上配置有凸出的锁扣结构30b，用于电路板40直接与骨架30固定限位，当然骨架30上对应配置有电路板40的安装位，电路板与安装位匹配后，通过凸出的锁扣结构30b将其与骨架30限位固定。
上述技术方案将对应连接电芯正负极两端的第一电连接器和第二电连接器分别连接至电路板，并且在电路板上表现为间隔设置，并且间隔距离至少3mm，该布置能够有效保证该电池包的放电安全。
参照图9和图10所示，第一电连接器50和第二电连接器60分别沿着电芯20的轴线长度方向相向延伸。
其中，电芯20定位于骨架30内，骨架30对应电芯20的两端电极分别设有连接开口O1和O2，第一电连接器50和第二电连接器60的起始端分别对应在连接开口O1和O2处于电芯20的两端电极电连接，具体地，第一电连接器50和第二电连接器60采用金属镍片，其与电芯20的两端电极点焊连接，其点焊连接部分如图10中点焊段50a所示；
然后，第一电连接器50和第二电连接器60分别沿着向外横向方向e延伸突出，并折弯，然后贴于骨架30的外表面向电路板40延伸并与之连接，第一电连接器50和第二电连接器60分别沿着向外横向方向e延伸突出，并折弯，形成横向延伸折弯段50b，如图10中A区所示。
上述结构设计使得第一电连接器50和第二电连接器60与电芯表皮形成间隔分布，第一电连接器50和第二电连接器60与电芯20电极相连，显然是导电材料，本技术方案中支撑骨架40为绝缘材料， 故，导电的第一电连接器50和第二电连接器60与电芯20表皮之间是由绝缘材料隔开，因此，即使电芯20表皮破损，也不会发生短路事故，起到安全绝缘保护的作用。
另外，由于此电池包100适用于电动工具，而电动工具的使用过程经常涉及到的振动较大，因此，第一电连接器50和第二电连接器60分别沿着向外横向方向e延伸突出，并折弯，形成横向延伸折弯段还能起到有效衰减振动的作用，避免电动工具使用过程中涉及到的较大振动对内部构成影响。
请继续参照图9，图10和图11所示，该电池包100还包括第三电连接器(70a，70b)，其布置于电路板40，与第一电连接器50或第二电连接器60相邻，且被配置为电连接到用电设备，使得来自电芯20的电力可以通过第三电连接器(70a，70b)提供给用电设备。
第三电连接器(70a；70b)固定连接于电路板40，至此，电芯20，骨架30和电路板40，以及第一电连接器50，第二电连接器60和第三电连接器(70a；70b)连接一体，一体后的结构整体，如图6中200所示，直接与壳体10的内腔滑动限位配合，装配简单方便，并且一体后的结构与内腔进一步限位有效防止电池包内部晃动。
具体地，第三电连接器(70a，70b)既包括适于3C电子产品用电的USB接口70b，还包括适于适于电动工具用电的大电流放电端子70a；其中；
第三电连接器(70a，70b)包括一对相邻的电连接器，一对相邻的电连接器提供正极和负极；特别是，第三电连接器70a适于电动工具用电，包括一对相邻的电连接器，一对相邻的电连接器提供正极和负极。
参照图8，图9和图10所示，电池包100，其包括电芯20和电路板40，以及第一电连接器50和第二电连接器60，其中，第一电连 接器50，其布置于电芯20的一端，并连接至电路板40；第二电连接器60，其布置于电芯20相对的另一端，并也连接至电路板40，且与第一电连接器50相间隔；第一电连接器50和第二电连接器60分别包括沿着电芯20的轴线长度方向相向延伸的延伸段50c和60c；延伸段50c和延伸段60c分别与电路板40之间保持至少2mm间距，即L1≧2mm。
该技术方案将对应连接电芯正负极两端的第一电连接器和第二电连接器分别延伸连接至电路板，并且避免第一电连接器和第二电连接器与电路板上的电子元件发生接触，导致短路，故设置第一电连接器和第二电连接器的延伸段分别与电路板之间保持至少2mm间距，保证该电池包的放电安全。
进一步地，为了避免电池包整体尺寸大小偏大，保证电池包小巧，延伸段50c和延伸段60c分别与电路板之40间保持不大于4mm间距，即L1≦4mm。
此外，参照图11所示，该电池包100还包括第四电连接器70c，电路板40与之对应设置有安装开口40a，第四电连接器70c嵌入安装于安装开口40a内，且与电路板40的上表面基本持平，第四电连接器70c被配置为可连接至充电源，以便通过第四电连接器70c向电芯20提供充电。
上述第四电连接器70c优选采用双向充放电接口，如type-c接口，通过该type-c接口不仅可以向电芯20提供充电，还可以通过该type-c接口向外放电，供3C类用电设备用电。
此外，该电池包100还包括与电路板40相连接的第三电连接器70a，其紧邻第四电连接器70c，且位于第四电连接器70c上方并与之上下并排设置，且第三电连接器70a被配置为电连接到用电设备，使得来自电芯20的电力可以通过第三电连接器70a提供给用电设备。
其中，上述第三电连接器70a适于电动工具用电，其优选采用针式端子，该针式端子至少包括一对相邻的电连接器，一对相邻的电连接器提供正极和负极，用于满足大电流放电。
请继续参照图8，图9，图10和图11所示，电池包100包括壳体10，以及内置于壳体10内的电芯20和电路板40；
第一电连接器50，其布置于电芯20的一端，并连接至电路板40；
第二电连接器60，其布置于电芯20相对的另一端，并连接至电路板40；
第三电连接器(70a，70b)，其被配置为电连接到用电设备，使得来自电芯20的电力可以通过第三电连接器(70a，70b)提供给用电设备；
第四电连接器70c，其被配置为可连接至充电源，以便通过第四电连接器70c向电芯20提供充电；
第三电连接器(70a，70b)和第四电连接器70c连接于电路板40的同一侧，且电路板40与与之下方相对的第一电连接器50和/或第二电连接器60之间保持至少2mm间距，电路板40与与之上方相对的壳体10的内壁之间保持不大于7mm间距。
电路板40与与之下方相对的第一电连接器50和/或第二电连接器60之间保持不大于4mm间距。
电路板40与与之上方相对的壳体10的内壁之间保持至少5mm间距。
该技术方案设置第一电连接器和第二电连接器的延伸段分别与电路板之间保持至少2mm间距，保证该电池包的放电安全；同时，该技术方案配置第三电连接器和第四电连接器，其中，第三连接器被配置为电连接到用电设备，使得来自所述电芯的电力可以通过第三电连接器提供给用电设备；第四电连接被配置为可连接至充电源，以便 通过第四电连接器向所述电芯提供充电；并且第三电连接器和第四电连接器连接于电路板的同一侧，为了避免电池包整体尺寸偏大，同时又不影响第三电连接器和第四电连接器的布局，故电路板与与之上方相对的壳体的内壁之间保持不大于7mm间距。
【实施例3】
请另外参照图12至图16所示，一种电池包结构100，其包括电芯20，骨架30和第一电路板40a，电芯20，骨架30和第一电路板40a沿电芯20径向方向依次连接设置；
骨架30沿着电芯20的轴线长度方向延伸，并包括：
第一安装部(30a，30b)，其沿着垂直于电芯20的轴线长度方向上向外延伸突出，适于分别定位安装连接电芯20和第一电路板40a；
第二安装部30c，其沿着电芯20的轴线长度方向上向外延伸突出，适于定位安装连接第二电路板40b；
第二电路板40b与第一电路板40a通讯连接。
其中，第一电路板40a为本电池包的主控板，具有BMS管理等功能，第二电路板40b为副板，其上配置有唤醒开关和/或灯珠，以及其它电子元器件。
该技术方案将电芯，骨架，第一电路板沿着电芯的径向方向依次连接设置，并且骨架沿着电芯的轴线长度方向延伸，该骨架在垂直于电芯的轴线长度方向上和沿着电芯的轴线长度方向上分别向外延伸凸出形成第一安装部和第二安装部，分别用来定位安装连接电芯和第一电路板，以及定位安装连接第二电路板，并且保持第二电路板与第一电路板通讯连接，其结构排布新颖，简洁。
具体地，参照图13和图14所示，第一安装部(30a，30b)包括位于电芯20两端并与之相接触的第一部30a，第一部30a至少部分覆盖电芯20的端部；以及，位于第一电路板40a边缘侧并与之限位 连接的第二部30b，第二部30b支撑限位连接第一电路板40a，使第一电路板40a与骨架30的本体之间间隔设置。
上述第一部30a对应分布于电芯20长轴方向的两端，其二者之间的间距适于恰好与电芯20的轴向长度相适配，通过两端的第一部30a实现电芯20长轴方向上的限位，并且，第一部30a在电芯20径向方向上的高度优选与电芯20的径向端面的高度大小相应。
上述第二部30b优选采用锁扣结构，用于第一电路板40a直接与骨架30固定限位，当然骨架30上对应配置有第一电路板40a的安装位，电路板与安装位匹配后，通过凸出的锁扣结构30b将其与骨架30限位固定。
如上述所述，电芯20通过骨架30限位，另外，还通过第一电连接器50和第二电连接器60将电芯20正负极两端连接至第一电路板40a，第一电连接器50和第二电连接器60各两端分别与电芯20和电路板40固定连接，具体采用焊接连接方式，如此实现电芯20和骨架30的限位固定。
上述电芯20优选采用21700电芯或18650电芯，第一电连接器50和第二电连接器60为导电材质，优选采用镍片，第一电连接器50和第二电连接器60对应电芯正负极连接处优选采用点焊连接固定。
上述第一电连接器50和第二电连接器60一方面起到电连接作用，另一方面还起到限位固定的作用。
请继续参照图13和图14所示，第一电连接器50和第二电连接器60分别沿着电芯20的轴线长度方向相向延伸。
其中，电芯20定位于骨架30内，骨架30对应电芯20的两端电极分别设有连接开口O1和O2，第一电连接器50和第二电连接器60的起始端分别对应在连接开口O1和O2处于电芯20的两端电极电连接，具体地，第一电连接器50和第二电连接器60采用金属镍片，其 与电芯20的两端电极点焊连接，其点焊连接部分如图14中点焊段50a所示；
然后，第一电连接器50和第二电连接器60分别沿着向外横向方向e延伸突出，并折弯，然后贴于骨架30的外表面向第一电路板40a延伸并与之连接，第一电连接器50和第二电连接器60分别沿着向外横向方向e延伸突出，并折弯，形成横向延伸折弯段50b，如图14中A区所示。
上述结构设计使得第一电连接器50和第二电连接器60与电芯表皮形成间隔分布，第一电连接器50和第二电连接器60与电芯20电极相连，显然是导电材料，本技术方案中支撑骨架40为绝缘材料，故，导电的第一电连接器50和第二电连接器60与电芯20表皮之间是由绝缘材料隔开，因此，即使电芯20表皮破损，也不会发生短路事故，起到安全绝缘保护的作用。
另外，由于此电池包结构100适用于电动工具，而电动工具的使用过程经常涉及到的振动较大，因此，第一电连接器50和第二电连接器60分别沿着向外横向方向e延伸突出，并折弯，形成横向延伸折弯段还能起到有效衰减振动的作用，避免电动工具使用过程中涉及到的较大振动对内部构成影响。
参照图12和图13所示，第二安装部30c位于第二电路板40b边缘侧并与之限位连接，第二安装部30c优选采用锁扣结构。
此外，第二安装部30c与电芯20的端部相邻，具体地，该第二安装部30c形成于第一部30a的外侧面上，即该第二安装部30c由第一部30a的外侧面向外延伸突出形成。
第二安装部30c布置于第一安装部(30a，30b)的第一部30a的位置处，第一部30a位于电芯20的两端并与电芯20的端部相接触。
而且，第二安装部30c位于第一部30a的边缘部，便于第二电路板40b的装配和限位。
参照图15和图16所示，电池包结构100包括壳体10，位于壳体10内并沿电芯20径向方向依次连接设置的电芯20，骨架30和第一电路板40a；
骨架30沿着电芯10的轴线长度方向向外延伸突出形成第二安装部30c；
第二安装部30c适于定位安装连接第二电路板40b；
第二电路板40b与第一电路板40a通讯连接，并至少包括一唤醒开关40b-1；
壳体10包括与第二电路板40b相对应的端盖10a，端盖10a对应唤醒开关40b-1位置处布置有按钮10a-1，按钮10a-1内侧设有适于与唤醒开关40b-1相触接的凸柱p。
该技术方案配置有唤醒开关的第二电路板设置于电芯的轴线长度方向上，并在对应的端盖处布置有按钮，按钮内侧设有适于与唤醒开关相触接的凸柱，用户操作使用时，四只手指紧握电池包长度方向表面，握持方便，大拇指刚好对应位于按钮处，方便按压操作，方便单手操作握持，按压。
其中，按钮10a-1适于弹性形变，和/或；按钮10a-1的外表面与端盖10a的外表面基本持平，具体参照图15所示。
上述电池包结构100还包括第一安装部(30a，30b)，第一安装部(30a，30b)包括位于电芯20两端并与之相接触的第一部30a，第一部30a至少部分覆盖电芯20的端部；以及，位于第一电路板40a边缘侧并与之限位连接的第二部30b，第二部30b支撑限位连接第一电路板40a，使第一电路板40a与骨架30的本体之间间隔设置。
第二安装部30c布置于第一安装部(30a，30b)的第一部30a的位置处，并与第二电路板40b的边缘侧限位连接。
参照图16所示，电池包结构100，其包括：沿电芯20径向方向依次连接设置的电芯20，骨架30和第一电路板40a；
骨架30沿着电芯20的轴线长度方向延伸，并在垂直于电芯20的轴线长度方向上向外延伸突出形成第一安装部(30a，30b)；
第一安装部(30a，30b)适于分别定位安装连接电芯20和第一电路板40a；
骨架30还包括位于第一安装部(30a，30b)之间，沿着电芯20的轴线长度方向延伸的弧形槽30d；
弧形槽30d与电芯20的弧形面相对应。
其中，弧形槽30d与电芯20的弧形面相对应，弧形槽30d与壳体10内壁组合形成电芯径向方向限位。
而且，弧形槽30c的宽度小于电芯20的外径，避免电池包的径向宽度较大，以尽量减小电池包外在尺寸大小。
该技术方案将电芯，骨架和第一电路板沿着电芯径向方向依次连接设置，并在电芯径向方向上，即垂直于电芯的轴线长度方向上，向外延伸突出形成第一安装部，并在第一安装部之间，布置沿着电芯的轴线长度方向延伸的弧形槽，弧形槽与电芯的弧形面相对应，第一安装部在轴线方向上对电芯进行限位，同时配以弧形槽在径向方向上进行限位。
最后应说明的是：以上实施例仅用以说明本实用新型的技术方案，而非对其限制；尽管参照前述实施例对本实用新型进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等 同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本实用新型实施例技术方案的范围。

Claims (12)

  1. 一种电池包，其特征在于，包括：
    壳体；
    沿电芯径向方向依次相互连接的电芯，骨架和电路板；
    第一电连接器和第二电连接器，其分别布置于所述电芯轴向的正负极两端，并分别连接至所述电路板；
    第三电连接器，其连接于所述电路板，并被配置为电连接到用电设备，使得来自所述电芯的电力可以通过第三电连接器提供给用电设备；
    连接一体的所述电芯，骨架和电路板，以及所述第一电连接器，第二电连接器和第三电连接器与所述壳体的内腔滑动限位配合。
  2. 根据权利要求1所述的电池包，其特征在于：所述连接一体的电芯，骨架和电路板，以及第一电连接器，第二电连接器和第三电连接器沿着长度方向与所述壳体的内腔滑动限位配合。
  3. 根据权利要求1或2所述的电池包，其特征在于：所述骨架上设置有凸出的，沿其长度方向线性延伸的滑键，所述壳体的内壁上对应布置有与之匹配的滑槽；或；
    所述骨架上设置有凹陷的，沿其长度方向线性延伸的滑槽，所述壳体的内壁上对应布置有与之匹配的凸出的滑键。
  4. 根据权利要求1所述的电池包，其特征在于：所述第一电连接器和所述第二电连接器分别向外横向延伸折弯贴于所述骨架的外表面并向所述电路板延伸连接到所述电路板。
  5. 根据权利要求4所述的电池包，其特征在于：所述第一电连接器和所述第二电连接器分别包括沿着所述电芯的轴线长度方向相向延伸的延伸段；所述延伸段与所述电路板之间保持至少2mm间距。
  6. 根据权利要求4所述的电池包，其特征在于：所述第一电连接器和所述第二电连接器分别包括沿着所述电芯的轴线长度方向相向延伸的延伸段，所述延伸段相互间隔，其间隔距离不小于3mm。
  7. 根据权利要求5所述的电池包，其特征在于：所述延伸段与所述电路板之间保持不大于4mm间距。
  8. 根据权利要求1所述的电池包，其特征在于：所述骨架沿着所述电芯的轴线长度方向延伸，并在垂直于所述电芯的轴线长度方向上向外延伸突出形成安装部；
    所述安装部适于分别定位安装连接所述电芯和所述电路板；
    所述骨架还包括位于所述安装部之间，沿着所述电芯的轴线长度方向延伸的弧形槽；
    所述弧形槽与所述电芯的弧形面相对应。
  9. 根据权利要求8所述的电池包，其特征在于：所述弧形槽的宽度小于所述电芯的外径。
  10. 一种电池包，其特征在于，包括：
    壳体；
    沿电芯径向方向依次相互连接的电芯，骨架和电路板；
    第一电连接器和第二电连接器，其分别布置于所述电芯轴向的正负极两端，并分别连接至所述电路板；
    第三电连接器，其连接于所述电路板，并被配置为电连接到用电设备，使得来自所述电芯的电力可以通过第三电连接器提供给用电设备；
    所述骨架与所述壳体的内腔滑动限位配合。
  11. 根据权利要求10所述的电池包，其特征在于：所述电芯，骨架和电路板，以及所述第一电连接器，第二电连接器和第三电连接器相互连接组装连接一体。
  12. 根据权利要求10或11所述的电池包，其特征在于：所述骨架上设置有凸出的，沿其长度方向线性延伸的滑键，所述壳体的内壁上对应布置有与之匹配的滑槽；或；
    所述骨架上设置有凹陷的，沿其长度方向线性延伸的滑槽，所述壳体的内壁上对应布置有与之匹配的凸出的滑键。
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