WO2022002023A1 - 电池包 - Google Patents

电池包 Download PDF

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Publication number
WO2022002023A1
WO2022002023A1 PCT/CN2021/103009 CN2021103009W WO2022002023A1 WO 2022002023 A1 WO2022002023 A1 WO 2022002023A1 CN 2021103009 W CN2021103009 W CN 2021103009W WO 2022002023 A1 WO2022002023 A1 WO 2022002023A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical connector
circuit board
battery pack
terminal
cell
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/CN2021/103009
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
Priority claimed from CN202110094005.5A external-priority patent/CN113871780A/zh
Application filed by Zhejiang Lera New Energy Power Technology Co Ltd filed Critical Zhejiang Lera New Energy Power Technology Co Ltd
Priority to JP2022569631A priority Critical patent/JP7539489B2/ja
Priority to KR1020227040034A priority patent/KR102891910B1/ko
Priority to US18/008,679 priority patent/US20230223639A1/en
Priority to EP21832363.2A priority patent/EP4175037A4/en
Publication of WO2022002023A1 publication Critical patent/WO2022002023A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M50/296—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
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/50—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
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
    • 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
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • 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
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10189—Non-printed connector
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10325—Sockets, i.e. female type connectors comprising metallic connector elements integrated in, or bonded to a common dielectric support
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10431—Details of mounted components
    • H05K2201/10507—Involving several components
    • H05K2201/10545—Related components mounted on both sides of the 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

Definitions

  • the present invention relates to the technical field of battery packs, in particular to a battery pack.
  • 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, many power tools on the market are powered by battery packs.
  • 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 and other fields. , and into the family in large numbers. For power tools, the question of whether the battery pack is suitable or not and whether the assembly is firm is very important for power tools.
  • the existing power tool battery pack installation devices are generally directly fixed on the power tool, so it is not convenient to At the same time, due to the large size of the battery pack, it is not suitable for supplying power to various electric tools, charging and discharging are not convenient enough, and the existing battery pack has a single function and a complex structure.
  • An object of the present invention is to provide a battery pack that is easy to seal and manage.
  • the present invention provides a battery pack, comprising a casing, a battery cell or a battery core assembly built in the casing, and a circuit board, further comprising:
  • a first electrical connector which connects the positive and negative ends of the cell or the cell assembly with the circuit board
  • a second electrical connector which connects the other ends of the positive and negative poles of the cell or the cell assembly with the circuit board
  • a third electrical connector which is configured on the circuit board and is adapted to be electrically connected to an external electrical device, so that the power from the cell can be supplied to the electrical device through the third electrical connector;
  • the third electrical connector has female terminals that are press-fitted with pin terminals of external electrical consumers.
  • the hole-type terminal has an annular contact portion suitable for conducting conductive connection with the pin-type terminal, the pin-type terminal is inserted into the hole-type terminal, and the annular contact surface of the annular contact portion annularly wraps the pin terminal.
  • annular contact portion protrudes toward the center of the hole-type terminal and is suitable for deformation, and the pin-type terminal is pressed into the annular contact portion and deformed under the action of an external force.
  • the insertion pressure between the pin terminal and the hole terminal is 8N ⁇ F ⁇ 12N.
  • the third electrical connector includes a conductive connecting portion fixedly connected with the circuit board and a cylindrical connecting portion electrically connected with the pin terminal, the conductive connecting portion and the cylindrical connecting portion Conductive connection, and the hole depth of the cylindrical connection part is not less than 4mm.
  • the cylindrical connecting portion includes a conductive cylindrical body and an expansion inner core located in the conductive cylindrical body, and the expansion inner core is suitable for deformation under the action of an external force.
  • the expansion inner core has a plurality of conductive elastic sheets, and the plurality of the conductive elastic sheets are spaced apart from each other in an annular array and protrude toward the center of the ring, and the pin terminal is pressed into the center area of the ring under the action of an external force, The protruding portion is squeezed to open and elastically wrap with the pin terminal.
  • the third electrical connector of the present invention for being electrically connected to an external electrical device has a hole-type terminal, and the female-type terminal is press-fitted with the pin-type terminal of the external electrical device, so that the power from the cell can pass through the third electrical device.
  • the connector is provided to the electrical equipment, and the configuration of the female terminal can facilitate the sealing design at the port of the battery pack, including dust sealing, waterproof sealing, etc.
  • Another object of the present invention is to provide a battery pack that can facilitate dustproof and waterproof management.
  • a battery pack provided by the present invention includes a casing, a battery cell or a battery core assembly built in the casing, and a circuit board, and further includes:
  • a first electrical connector which connects the positive and negative ends of the cell or the cell assembly with the circuit board
  • a second electrical connector which connects the other ends of the positive and negative poles of the cell or the cell assembly with the circuit board
  • a third electrical connector which is configured on the circuit board and is adapted to be electrically connected to an external electrical device, so that the power from the cell can be supplied to the electrical device through the third electrical connector;
  • the third electrical connector has an open port facing the outer side of the housing and passing through it, and a closed end away from one end of the port, the open port is suitable for the insertion of terminals of external electrical equipment, and the closed end
  • the extension is fixedly conductively connected to the circuit board.
  • the third electrical connector includes a body and a conductive terminal integrally connected with the body and opposite to the open port, and the conductive terminal is at least partially encapsulated by the body.
  • the conductive terminal is integrally formed with the body by injection molding.
  • the conductive terminal includes a conductive connection portion that is fixedly connected to the circuit board and a cylindrical connection portion that is electrically connected to the pin terminal, and the cylindrical connection portion includes a conductive cylindrical body and a
  • the expansion inner core in the flashlight is suitable for deformation under the action of external force.
  • the expansion inner core has a plurality of conductive elastic sheets, and the plurality of the conductive elastic sheets are spaced apart from each other in an annular array and protrude toward the center of the ring, and the pin terminal is pressed into the center area of the ring under the action of an external force, The protruding portion is squeezed to open and elastically wrap with the pin terminal.
  • a sealing gasket is sandwiched and arranged between the third electrical connector and the housing, and the sealing gasket is suitable for sealing the installation gap between the open port and the housing.
  • the third electrical connector of the present invention for electrically connecting to external electrical equipment has an open port facing the outer side of the housing and passing through it, and a closed end away from the port, and the open port is suitable for external electrical consumption.
  • the terminal of the device is inserted, so that the power from the cell can be supplied to the electrical device through the third electrical connector, and the closed end is extended to be fixed and conductively connected to the circuit board to achieve circuit conduction.
  • the outer port is open and the other end is closed, so that it can effectively manage dust and water.
  • Another object of the present invention is to provide a battery pack with a reasonable structural layout.
  • a battery pack provided by the present invention includes a casing, a battery cell or a battery core assembly built in the casing, and a circuit board, and further includes:
  • a first electrical connector which connects the positive and negative ends of the cell or the cell assembly with the circuit board
  • a second electrical connector which connects the other ends of the positive and negative poles of the cell or the cell assembly with the circuit board
  • a third electrical connector which is configured on the circuit board and is adapted to be electrically connected to an external electrical device, so that the power from the cell can be supplied to the electrical device through the third electrical connector;
  • a fourth electrical connector which is disposed on the circuit board and is adapted to be electrically connected to an external charging source, so that charges are provided to the battery cells through the fourth electrical connector;
  • the third electrical connector and the fourth electrical connector are stacked on the same side of the battery pack.
  • the circuit board has an installation notch corresponding to the fourth electrical connector, the fourth electrical connector is correspondingly installed in the installation notch, and at least part of one end surface thereof is substantially the same as that of the circuit board. flush, and the third electrical connector is stacked on the end face.
  • the third electrical connector has an open port facing the outer side of the housing and passing through it, and a closed end away from the end of the port, the open port is suitable for the insertion of terminals of external electrical equipment, so The closed end is extended and connected to the circuit board in a fixed and conductive manner.
  • the third electrical connector includes a body and a conductive terminal integrally connected with the body, the conductive terminal is open at one end and closed at the other end, the open end is sealed and wrapped by the body, and the closed end extends through the body at least partially.
  • the body is fixed and electrically connected to the circuit board.
  • the closed end of the conductive terminal is fixed and welded to the circuit board in a circular arc of 90 degrees.
  • two sides of the body are respectively provided with lugs in the width direction of the circuit board, the lugs and the circuit board are correspondingly arranged with connecting holes suitable for the connecting pieces to pass through, and the connecting pieces pass through correspondingly.
  • the connecting holes fix the two.
  • the stacked height of the third electrical connector and the fourth electrical connector ranges from 8 mm to 10 mm.
  • the third electrical connector and the fourth electrical connector are stacked and arranged on the same side of the battery pack, and the third electrical connector is suitable for being electrically connected to external electrical equipment, so that the power from the cell can pass through the
  • the three electrical connectors are provided to the electrical equipment; the fourth electrical connector is adapted to be electrically connected to an external charging source, so that charges are provided to the battery cells through the fourth electrical connector; in this way, the other side of the battery pack provided by the present invention also It can be expanded for other purposes, such as arranging another USB-A interface.
  • FIG. 1 is a perspective view of a battery pack according to a specific embodiment of the present invention.
  • FIG. 2 is an exploded view 1 of a battery pack according to a specific embodiment of the present invention.
  • FIG. 3 is an exploded view 2 of a battery pack according to a specific embodiment of the present invention.
  • FIG. 4 is a structural diagram of a circuit board according to a specific embodiment of the present invention.
  • FIG. 5 is a structural diagram of a third electrical connector according to a specific embodiment of the present invention.
  • FIG. 6 is a structural diagram of a circuit board and a supporting frame according to a specific embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a battery pack and a pin terminal in a specific embodiment of the present invention.
  • FIG. 8 is a sectional view showing the separation of the battery pack and the pin terminals according to the specific embodiment of the present invention.
  • FIG. 9 is a cross-sectional view of the battery pack and the pin terminal mating according to a specific embodiment of the present invention.
  • FIG. 10 is a structural cross-sectional view of a third electrical connector according to a specific embodiment of the present invention.
  • FIG. 11 is an exploded view of the structure of the third electrical connector according to the specific embodiment of the present invention.
  • Figure 12 is a schematic exploded view of a specific embodiment of the present invention.
  • FIG. 13 is another exploded schematic diagram of a specific embodiment of the present invention.
  • a battery pack according to an embodiment of the present invention includes a casing 1 , a battery cell 2 and a circuit board 3 built into the casing 1 , and further includes :
  • a first electrical connector 4 which connects one end of the positive and negative electrodes of the battery cell 2 to the circuit board 3;
  • the second electrical connector 5 connects the other ends of the positive and negative electrodes of the battery cell 2 with the circuit board 3;
  • the third electrical connector 6 is arranged on the circuit board 3 .
  • the third electrical connector 6 includes a body and a pinhole terminal 10 integrally molded with the body.
  • the pinhole terminal 10 is used for electrical connection with external electrical equipment, so that the power from the battery cell 2 can be provided to the electrical equipment through the third electrical connector;
  • the fourth electrical connector 7 is arranged on the circuit board 3 and includes at least one The second interface 12, the second interface 12 is used for electrical connection with external electrical equipment and a charging source, so that power can be provided to the electrical equipment through the second interface 12;
  • the third electrical connector 6 and the fourth electrical connector 7 can be arranged on the same side of the battery pack, and according to the actual product requirements, they can also be arranged on opposite sides of the battery pack;
  • the second interface 12 in this embodiment can be used for both discharging and charging.
  • the second interface 12 is a type-C interface.
  • the pinhole terminal 10 is used for various handheld electric Power supply for tools, such as cordless vacuum cleaners, DC air compressors and other garden tools, etc., and the use of pinhole terminals can effectively improve the waterproof sealing effect of the battery pack, and it is more convenient to plug in;
  • the battery pack in this embodiment has a compact structure, It can also be used as a mobile power supply.
  • mobile devices such as mobile phones and tablets can be charged through the second interface 12 using the type-C interface, and the cells 2 of the battery pack can also be charged through the type-C interface.
  • the battery pack in this embodiment further includes a support frame 8, which is used to install the battery cell 2 and the circuit board 3.
  • the battery cell 2 adopts a single-section 21700 battery cell, and the support frame 8
  • the upper part is an arc-shaped groove for setting the battery core 2, and an insulating pad 15 is provided between the support frame 8 and the battery core 2; it can play the role of leakage protection, especially when the skin of the battery core 2 is damaged, Guaranteed that there will be no leakage.
  • two protruding support blocks 16 are respectively provided on both sides of the bottom of the support frame 8;
  • the two snap-fit buckle plates 17 are used to space the circuit board 3 from the support skeleton 8 through the support block 16, that is, the stepped support block 16 is used to limit the distance between the circuit board 3 and the support skeleton 8, and the snap-fit
  • the buckle plate 17 is used to fasten and fix the circuit board 3 and the support frame 8; the distance between the circuit board 3 and the support frame 8 is H, and the distance between the circuit board 3 and the support frame 8 is not greater than 2mm.
  • H 1.57mm; through the setting of the distance H, a certain heat dissipation effect is effectively ensured between the circuit board 3 and the battery core 2 .
  • the pinhole terminal 10 and/or the second interface 12 extend outward along the axis of the positive and negative electrodes of the battery cell 2 ; the second interface 12 is along the axis of the positive and negative electrodes of the battery cell 2 .
  • the outwardly extending arrangement that is, the insertion direction of the pinhole terminal 10 and the second interface 12 is arranged along the direction of the longest side of the battery pack, which is more convenient to use.
  • the housing 1 is provided with corresponding connector openings 27 corresponding to the third electrical connector 6 and the fourth electrical connector 7 .
  • the connector openings 27 include the first openings 18 and the second openings 27 .
  • the opening 19, the second interface 12 corresponds to the second opening 19;
  • the pinhole terminal 10 corresponds to the first opening 18;
  • the second interface 12 and the pinhole terminal 10 are arranged side by side at the same end of the battery pack , that is, through the arrangement of the pinhole terminal 10 and the second interface 12, the problem of multi-functional application of the battery pack in this embodiment is simultaneously achieved, and the overall structure is compact and easy to use.
  • the fourth electrical connector 7 slightly protrudes from the third electrical connector 7.
  • the installation gaps between the electrical connector 6, the third electrical connector 6, the fourth electrical connector 7 and the support frame 8 are sealed by a waterproof gasket 9, and the waterproof gasket 9 is provided with the third electrical connector 6,
  • the slot corresponding to the fourth electrical connector 7, the waterproof gasket 9 is sleeved on the fourth electrical connector 7, that is, the part where the fourth electrical connector 7 slightly protrudes from the third electrical connector 6, and the waterproof gasket 9.
  • the installation gap is completely sealed, and at the same time, it is completely close to the side walls of the third electrical connector 6 and the fourth electrical connector 7 to further ensure the sealing effect, At the same time, the corresponding positioning and installation effect is achieved through the fourth electrical connector 7 .
  • the battery pack in this embodiment is powered by the battery cell 2, and uses a single 21700 battery cell.
  • the suitable power tools are not limited to cordless hand-held power tools, but also garden tools, cordless vacuum cleaners, and DC air compressors.
  • first electrical connector 4 and the second electrical connector 5 at least include a longitudinal bending section extending along the axis of the positive and negative electrodes of the battery cell 2, that is, the first electrical connector 4 and the second electrical connection are bent at a right angle.
  • the device 5 is used to connect the positive and negative electrodes of the battery cell and the circuit board 3 respectively.
  • Embodiment 1 Compared with Embodiment 1, in this embodiment, there are two interfaces of the third electrical connector 6 provided on the battery pack, including a pinhole terminal 10 and a USB interface, as shown in FIG.
  • the hole terminal 10 and the USB interface are respectively arranged at both ends of the battery pack; the setting of the pin hole terminal 10 is the same as that in Embodiment 1, and the USB interface is arranged on the opposite side of the battery pack with the pin hole terminal 10 .
  • the setting of the USB interface further improves the scope of application of the battery pack in this embodiment when used as a mobile power source.
  • the casing 1 includes a first casing 20 for accommodating the battery cell 2 , and at least one second casing 21 , and the second casing 21 is disposed on the battery core 2 .
  • positive and/or negative terminals, and the first casing 20 and the second casing 21 form a closed cavity for accommodating the battery cell 2; specifically, as shown in FIG. 3, in this embodiment, the first casing
  • the body 20 and the second shell 21 respectively have one and only one, the second shell 21 is arranged at the positive or negative end of the battery cell 2, and there is a curved and closed between the first shell 20 and the second shell 21.
  • the separation edge is located in the same plane; and the plane where the separation edge is located is parallel to the plane where the positive electrode and the negative electrode of the cell 2 are located, that is, the edge of the second shell 21 is the separation edge that cooperates with the first shell 20, and the second The plane where the casing 21 is located is perpendicular to the axis direction of the positive and negative electrodes of the battery cell 2, and the first casing 20 is barrel-shaped;
  • the casing 20 has an integrated structure, and the second casing 21 is embedded and fixed at the end of the first casing 20 . Specifically, the first casing 20 and the second casing 21 are fitted with each other through a snap-fit structure.
  • the separation edge of the first shell 20 and the second shell 21 is located at the outer end face of the shell 1; the structural side wall of the shell 1 in this embodiment has no visible separation edge, which reflects an integrated design. , it feels better to hold when used as a power bank.
  • first casing 20 and the second casing 21 are sealed and connected by ultrasonic welding, which further improves the overall sealing performance.
  • the end of the support frame 8 is extended with a fixing frame 14, which is suitable for clamping the third electrical connector 6 and the fourth electrical connector 7 to a limit; 6, the third electrical connector 6 and the fourth electrical connector 7 are arranged on the same side of the battery pack, and are stacked up and down, and the fixing frame 14 is the two fixing feet extending downward from the end of the support frame 8, The space between the two fixing feet is used to clamp and limit the third electrical connector 6 and the fourth electrical connector 7, and play the role of corresponding positioning and installation. The sides are pressed against each other, which further improves the sealing effect of the waterproof gasket 9 on the battery pack.
  • the battery pack 100 includes a housing 1', a cell 2' or a cell assembly built in the housing 1', and a circuit board 3', which also includes:
  • the first electrical connector 4' which connects the battery core 2' or one end of the positive and negative electrodes of the battery core assembly with the circuit board 3';
  • the second electrical connector 5' which connects the other ends of the positive and negative poles of the cell 2' or the cell assembly with the circuit board 3';
  • the third electrical connector 6' which is arranged on the circuit board 3', is suitable for being electrically connected to external electrical equipment, so that the power from the battery cell 2' can be supplied to the electrical equipment through the third electrical connector 6';
  • the third electrical connector 6' has a female terminal 60', which is press-fitted with a pin terminal 200 of an external electrical device, as shown in FIGS. 8 and 9 in particular.
  • the hole-type terminal 60 ′ has a ring-shaped contact portion 60 a suitable for conductive connection with the pin-type terminal 200 , the pin-type terminal 200 is inserted into the hole-type terminal 60 ′, and the ring-shaped contact surface of the ring-type contact portion 60 a encircles the pin-type terminal 200 .
  • annular contact portion 60a protrudes toward the center of the hole-type terminal 60' and is suitable for deformation, and the pin-type terminal 200 is pressed into the annular contact portion 60a and deformed under the action of an external force.
  • the insertion pressure between the pin terminal 200 and the female terminal 60' is 8N ⁇ F ⁇ 12N.
  • the third electrical connector 6' includes a conductive connection portion 60b fixedly connected to the circuit board 3' and a cylindrical connection portion 60c electrically connected to the pin terminal 200, and the conductive connection portion 60b and the cylindrical connection portion 60c are electrically conductive connection, and the hole depth L of the cylindrical connecting portion 60c is not less than 4 mm, as shown in FIG. 8 .
  • the cylindrical connecting portion 60c includes a conductive cylindrical body 601 and an expanded inner core 602 located in the conductive cylindrical body 601, and the expanded inner core 602 is suitable for deformation under the action of an external force.
  • the expansion inner core 602 has a plurality of conductive elastic sheets 60m, and the plurality of conductive elastic sheets 60m are arranged in a circular array at intervals, and protrude toward the center of the ring. It is squeezed open and elastically wrapped with the pin terminal 200 , as shown in FIG. 9 , FIG. 10 and FIG. 11 .
  • the third electrical connector of the present invention for being electrically connected to an external electrical device has a hole-type terminal, and the female-type terminal is press-fitted with the pin-type terminal of the external electrical device, so that the power from the cell can pass through the third electrical device.
  • the connector is provided to the electrical equipment, and the configuration of the female terminal can facilitate the sealing design at the port of the battery pack, including dustproof sealing, waterproof sealing, etc.
  • the battery pack 100 includes a housing 1', a cell 2' or a cell assembly built in the housing 1', and a circuit board 3', which further includes:
  • the first electrical connector 4' which connects the battery core 2' or one end of the positive and negative electrodes of the battery core assembly with the circuit board 3';
  • the second electrical connector 5' which connects the other ends of the positive and negative poles of the cell 2' or the cell assembly with the circuit board 3';
  • the third electrical connector 6' which is arranged on the circuit board 3', is suitable for being electrically connected to external electrical equipment, so that the power from the battery cell 2' can be supplied to the electrical equipment through the third electrical connector 6';
  • the third electrical connector 6' has an open port A facing the outside of the housing and passing through it, and a closed end B away from the port A.
  • the open port A is suitable for the insertion of terminals of external electrical equipment, and the closed end
  • the B extension is fixed and conductively connected to the circuit board 3'.
  • the third electrical connector 6 ′ includes a body 6m and a conductive terminal 6n that is integrally connected with the body 6m and is opposite to the open port A, and the conductive terminal 6n is at least partially sealed and wrapped by the body 6m, specifically referring to FIGS. 9 and 10 . and shown in Figure 11.
  • the conductive terminals 6n are integrally molded with the body 6m.
  • the conductive terminal 6n includes a conductive connecting portion fixedly connected to the circuit board 3' and a cylindrical connecting portion 60c that is electrically connected to the pin terminal 200.
  • the cylindrical connecting portion 60c includes a conductive cylindrical body 601 and a cylindrical connecting portion 60c located in the conductive cylindrical body.
  • the expanded inner core 602 in 601 is adapted to deform under the action of external force.
  • the expansion inner core 602 has a plurality of conductive elastic sheets 60m, and the plurality of conductive elastic sheets 60m are arranged in a circular array at intervals, and protrude toward the center of the ring. It is squeezed open and elastically wrapped with the pin terminal 200 , as shown in FIG. 9 .
  • a gasket 9' is sandwiched between the third electrical connector 6' and the housing 1', and the gasket 9' is suitable for sealing the installation gap between the open port A and the housing 1'.
  • the third electrical connector of the present invention for electrically connecting to external electrical equipment has an open port facing the outer side of the housing and passing through it, and a closed end away from the port, and the open port is suitable for external electrical consumption.
  • the terminal of the device is inserted, so that the power from the cell can be supplied to the electrical device through the third electrical connector, and the closed end is extended to be fixed and conductively connected to the circuit board to achieve circuit conduction.
  • the outer port is open and the other end is closed, so that it can effectively manage dust and water.
  • the battery pack 100 includes a housing 1', a cell 2' or a cell assembly built in the housing 1', and a circuit board 3', which further includes:
  • the first electrical connector 4' which connects the battery core 2' or one end of the positive and negative electrodes of the battery core assembly with the circuit board 3';
  • the second electrical connector 5' which connects the other ends of the positive and negative poles of the battery core 2' or the battery core assembly with the circuit board 3';
  • the third electrical connector 6' which is arranged on the circuit board 3', is suitable for being electrically connected to external electrical equipment, so that the power from the battery cell 2' can be supplied to the electrical equipment through the third electrical connector 6';
  • the fourth electrical connector 7' which is arranged on the circuit board 3', is suitable for being electrically connected to an external charging source, so that the electric cell is provided with electric charge through the fourth electrical connector 7';
  • the third electrical connector 6' and the fourth electrical connector 7' are stacked on the same side of the battery pack 100.
  • the circuit board 3 ′ has a mounting notch 30 ′ corresponding to the fourth electrical connector 7 ′, the fourth electrical connector 7 ′ is correspondingly mounted in the mounting notch 30 ′, and one end surface 70 thereof is at least partially in contact with the circuit board 3 ′ is substantially flush, and the third electrical connector 6 ′ is stacked on the end face 70 .
  • the third electrical connector 6' has an open port A facing the outside of the housing 1' and passing through it, and a closed end B away from the port A.
  • the open port A is suitable for external electrical equipment.
  • the terminal is inserted, and the closed end B is extended and connected to the circuit board 3' in a fixed and conductive manner.
  • the third electrical connector 6' includes a body 6m and a conductive terminal 6n integrally connected with the body 6m.
  • the conductive terminal 6n is open at one end and closed at one end, the open end is sealed and wrapped by the body 6m, and the closed end is at least partially extended through
  • the main body 6m is fixed and conductively connected to the circuit board 3'.
  • the closed end of the conductive terminal 6n is fixed and welded to the circuit board 3' in a circular arc of 90 degrees.
  • two sides of the main body 6m are respectively provided with lugs 6p in the width direction of the circuit board 3', and the lugs 6p and the circuit board 3' are correspondingly arranged with connecting holes suitable for the connecting piece 6q to pass through, and the connecting piece 6q correspondingly passes through. Fix the two through the connecting hole.
  • the stacked height H of the third electrical connector 6' and the fourth electrical connector 7' ranges from 8mm to 10mm.
  • the third electrical connector and the fourth electrical connector are stacked and arranged on the same side of the battery pack, and the third electrical connector is suitable for being electrically connected to external electrical equipment, so that the power from the cell can pass through the
  • the three electrical connectors are provided to the electrical equipment; the fourth electrical connector is adapted to be electrically connected to an external charging source, so that charges are provided to the battery cells through the fourth electrical connector; in this way, the other side of the battery pack provided by the present invention also It can be expanded for other purposes, such as arranging another USB-A interface.
  • the above-mentioned fourth electrical connector 7' preferably adopts a type-c interface, which on the one hand is not only suitable for being electrically connected to an external charging source, so that charges are provided to the battery cells through the fourth electrical connector 7', on the other hand It can also be electrically connected to external electrical equipment, so that the power from the battery cell 2' can be supplied to the electrical equipment through the fourth electrical connector 7'.

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Abstract

本发明公开了一种电池包，包括壳体，内置于该壳体中的电芯或电芯组件，以及电路板，其还包括：第一电连接器，其将电芯或电芯组件正负极的一端与电路板相连接；第二电连接器，其将电芯或电芯组件正负极的另一端与电路板相连接；第三电连接器，其配置于电路板，适于电连接到外部的用电设备，使得来自电芯的电力可以通过第三电连接器提供给用电设备；第三电连接器具有孔式端子，其与外部的用电设备的针式端子压力配合。该技术方案使得来自电芯的电力可以通过第三电连接器提供给用电设备，孔式端子的配置使用能够便于电池包端口处的密封设计，包括防尘密封，防水密封等。

Description

电池包 技术领域
本发明涉及电池包技术领域，尤其是一种电池包。
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，市场上很多电动工具都采用电池包供电的方式。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，并大量进入家庭。对于电动工具来说，电池包的合适与否以及装配是否牢固的问题对电动工具来说至关重要，现有的电动工具电池包安装装置一般都是直接固定在电动工具上，因此不能的方便的更换电池包，同时，由于由于电池包体积较大，不能适于向多种电动工具进行供电，充放电使用都不够方便，并且现有的电池包功能单一，结构复杂。
发明内容
本发明的目的在于提供一种便于密封管理的电池包。
本发明提供一种电池包，包括壳体，内置于该壳体中的电芯或电芯组件，以及电路板，其还包括：
第一电连接器，其将所述电芯或所述电芯组件正负极的一端与所述电路板相连接；
第二电连接器，其将所述电芯或所述电芯组件正负极的另一端与所述电路板相连接；
第三电连接器，其配置于所述电路板，适于电连接到外部的用电设备，使得来自电芯的电力可以通过所述第三电连接器提供给用电设备；
所述第三电连接器具有孔式端子，其与外部的用电设备的针式端子压力配合。
进一步地，所述孔式端子具有适于与所述针式端子导电连接的环形接触部，所述针式端子插入所述孔式端子内，所述环形接触部的环形接触面环形包裹所述针式端子。
进一步地，所述环形接触部向所述孔式端子的中心方向突起，并适于形变，所述针式端子在外力作用下压入所述环形接触部并使之发生形变。
进一步地，所述针式端子与所述孔式端子之间的插拔压力8N≦F≦12N。
进一步地，所述第三电连接器包括与所述电路板固定连接的导电连接部和与所述针式端子进行电连接的筒状连接部，所述导电连接部和所述筒状连接部导电连接，且所述筒状连接部的孔深不小于4mm。
进一步地，所述筒状连接部包括导电筒体和位于所述导电筒体内的膨胀内芯，所述膨胀内芯适于在外力作用下发生形变。
进一步地，所述膨胀内芯具有若干导电弹性片，若干所述导电弹性片相互间隔呈环形阵列排布，并向环形中心方向突起，所述针式端子在外力作用下压入环形中心区域，突起部分被挤压张开并与所述针式端子弹性裹紧。
较现有技术，本发明的有益技术效果在于：
本发明用于电连接到外部的用电设备的第三电连接器具有孔式端子，孔式端子与外部的用电设备的针式端子压力配合，使得来自电 芯的电力可以通过第三电连接器提供给用电设备，孔式端子的配置使用能够便于电池包端口处的密封设计，包括防尘密封，防水密封等。
本发明的另外一目的在于提供一种能够便于防尘、防水管理的电池包。
本发明提供的一种电池包，包括壳体，内置于该壳体中的电芯或电芯组件，以及电路板，其还包括：
第一电连接器，其将所述电芯或所述电芯组件正负极的一端与所述电路板相连接；
第二电连接器，其将所述电芯或所述电芯组件正负极的另一端与所述电路板相连接；
第三电连接器，其配置于所述电路板，适于电连接到外部的用电设备，使得来自电芯的电力可以通过所述第三电连接器提供给用电设备；
所述第三电连接器具有朝向壳体外侧并与之贯通的开放型端口，以及远离该端口一端的封闭端，所述开放型端口适于外部的用电设备的端子插入，所述封闭端延长与所述电路板固定导电连接。
进一步地，所述第三电连接器包括本体和与该本体连接一体并与所述开放型端口相对的导电端子，所述导电端子至少部分被所述本体密封包裹。
进一步地，所述导电端子与所述本体注塑一体。
进一步地，所述导电端子包括与所述电路板固定连接的导电连接部和与所述针式端子进行电连接的筒状连接部，所述筒状连接部包括导电筒体和位于所述导电筒体内的膨胀内芯，所述膨胀内芯适于在外力作用下发生形变。
进一步地，所述膨胀内芯具有若干导电弹性片，若干所述导电弹性片相互间隔呈环形阵列排布，并向环形中心方向突起，所述针式端子在外力作用下压入环形中心区域，突起部分被挤压张开并与所述针式端子弹性裹紧。
进一步地，所述第三电连接器与所述壳体之间夹设布置有密封垫，所述密封垫适于密封所述开放型端口与所述壳体之间的安装间隙。
较现有技术，本发明的有益技术效果在于：
本发明用于电连接到外部的用电设备的第三电连接器具有朝向壳体外侧并与之贯通的开放型端口，以及远离该端口一端的封闭端，开放型端口适于外部的用电设备的端子插入，使得来自电芯的电力可以通过第三电连接器提供给用电设备，封闭端延长与电路板固定导电连接，实现电路导通，由于第三电连接器仅具有朝向壳体外侧的开放型端口，另一端封闭，如此可以有效防尘、防水管理。
本发明的又一目的在于提供一种结构布局合理的电池包。
本发明提供的一种电池包，包括壳体，内置于该壳体中的电芯或电芯组件，以及电路板，其还包括：
第一电连接器，其将所述电芯或所述电芯组件正负极的一端与所述电路板相连接；
第二电连接器，其将所述电芯或所述电芯组件正负极的另一端与所述电路板相连接；
第三电连接器，其配置于所述电路板，适于电连接到外部的用电设备，使得来自电芯的电力可以通过所述第三电连接器提供给用电设备；
第四电连接器，其配置于所述电路板，适于电连接到外部充电源， 使得通过第四电连接器向所述电芯提供电荷；
所述第三电连接器和所述第四电连接器层叠布置于所述电池包的同一侧。
进一步地，所述电路板具有与所述第四电连接器相对应的安装缺口，所述第四电连接器对应安装于所述安装缺口内，并其一端面至少局部与所述电路板基本齐平，所述第三电连接器层叠于该端面。
进一步地，所述第三电连接器具有朝向壳体外侧并与之贯通的开放型端口，以及远离该端口一端的封闭端，所述开放型端口适于外部的用电设备的端子插入，所述封闭端延长与所述电路板固定导电连接。
进一步地，所述第三电连接器包括本体和与该本体连接一体的导电端子，所述导电端子一端开放，一端封闭，开放的一端被所述本体密封包裹，封闭的一端至少部分延长贯穿所述本体与所述电路板固定导电连接。
进一步地，所述导电端子封闭的一端呈圆弧90度固定焊接于所述电路板。
进一步地，所述本体的两侧在所述电路板宽度方向上分别设置有凸耳，所述凸耳和所述电路板对应布置有适于连接件穿过的连接孔，连接件对应穿过连接孔将二者固定。
进一步地，所述第三电连接器和所述第四电连接器层叠后的高度范围为8mm-10mm。
较现有技术，本发明的有益技术效果在于：
本发明将第三电连接器和第四电连接器层叠布置于所述电池包的同一侧，第三电连接器适于电连接到外部的用电设备，使得来自电芯的电力可以通过第三电连接器提供给用电设备；第四电连接器适于 电连接到外部充电源，使得通过第四电连接器向电芯提供电荷；如此，本发明提供的电池包的另一侧还可以拓展作其它用，如再布置一个USB-A接口等。
附图说明
图1为本发明具体实施例电池包的立体图；
图2为本发明具体实施例电池包的爆炸图1；
图3为本发明具体实施例电池包的爆炸图2；
图4为本发明具体实施例电路板的结构图；
图5为本发明具体实施例第三电连接器的结构图；
图6为本发明具体实施例电路板和支撑骨架的结构图；
图7为本发明具体实施例电池包与针式端子配合示意图；
图8为本发明具体实施例电池包与针式端子分离剖视图；
图9为本发明具体实施例电池包与针式端子配合剖视图；
图10为本发明具体实施例第三电连接器的结构剖视图；
图11为本发明具体实施例第三电连接器的结构爆炸图；
图12为本发明具体实施例的爆炸示意图；
图13为本发明具体实施例的另一爆炸示意图。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不能用来限制本发明的范围。
实施例1：
本发明实施例的一种电池包，如图1、图2、图3、图4、图5所 示，包括壳体1，内置于壳体1中的电芯2和电路板3，还包括：
第一电连接器4，其将电芯2正负极的一端与电路板3相连接；
第二电连接器5，其将电芯2正负极的另一端与电路板3相连接；
如图1所示，本实施例中，第三电连接器6，其配置于电路板3，第三电连接器6包括本体和与该本体注塑一体的针孔式端子10，针孔式端子10用于与外部的用电设备电连接，使得来自电芯2的电力可以通过第三电连接器提供给用电设备；第四电连接器7，其配置于电路板3，并包括至少一第二接口12，第二接口12用于与外部的用电设备和充电源电连接，使得既可以通过第二接口12提供电力给用电设备；又可以通过第二接口12向电芯2提供电荷，根据实际产品需求，可以将第三电连接器6和第四电连接器7设置在电池包的同一侧，根据产品实际需求，也可以设置在电池包相对的两侧；
本实施例中的第二接口12既可用于放电也可用于充电，具体来说，第二接口12为type-C接口，如图5所示，针孔式端子10用于为各种手持电动工具供电，例如无绳吸尘器、直流空压机以及其他园林工具等，并且采用针孔式接线端子能够有效提高电池包的防水密封效果，并且插接起来更加方便；本实施例的电池包结构小巧，还能作为移动电源使用，此时，可通过采用type-C接口的第二接口12为手机、平板等移动设备充电，同时还能通过type-C接口为电池包的电芯2进行充电。
具体来说，本实施例中的电池包还包括支撑骨架8，支撑骨架8用于安装电芯2和电路板3，如图2所示，电芯2采用单节21700电芯，支撑骨架8上部为弧形凹槽用于设置电芯2，并且支撑骨架8与电芯2之间设有绝缘垫15；能够起到漏电保护的作用，特别是当电芯2表皮破损的情况发生时，保证不会出现漏电的情况。
在本实施例中，为了实现电路板3间隔支撑于支撑骨架8上，通 过在支撑骨架8底部两侧分别设有2个伸出的支撑卡块16；在支撑骨架8底部两侧分别设有2个卡接扣板17，通过支撑卡块16用于将电路板3与支撑骨架8间隔开，即台阶形支撑卡块16用于限定电路板3与支撑骨架8之间的间距，卡接扣板17用于将电路板3与支撑骨架8扣紧固定；电路板3与支撑骨架8之间的间距为H，电路板3与支撑骨架8之间间距不大于2mm，本实施例中，H＝1.57mm；通过间距H的设置，有效保证电路板3与电芯2之间具有一定的散热效果。
如图2和4所示，针孔式端子10和/或第二接口12沿着电芯2的正负极轴线方向向外延伸；第二接口12沿着电芯2的正负极轴线方向向外伸出设置，即针孔式端子10和第二接口12的插接方向都是沿电池包的最长边的方向设置，更加便于使用。
本实施例中，壳体1对应第三电连接器6和第四电连接器7配置有对应的连接器开孔27，具体来说，连接器开孔27包括第一开孔18和第二开孔19，第二接口12与第二开孔19相对应；针孔式端子10与第一开孔18相对应；并且第二接口12与针孔式端子10并列设置在电池包同一端部，即通过针孔式端子10和第二接口12的设置，同时实现了本实施例中电池包的多功能适用的问题，并且整体结构小巧，使用起来简单方便。
并且第三电连接器6与支撑骨架8之间设有安装间隙，以及第四电连接器7与支撑骨架8之间设有安装间隙，具体的，第四电连接器7略微突出于第三电连接器6，第三电连接器6、第四电连接器7与支撑骨架8之间的安装间隙通过防水密封垫9进行密封，防水密封垫9上设有与第三电连接器6、第四电连接器7相对应的开槽，防水密封垫9套设在第四电连接器7上，即第四电连接器7略微突出于第三电连接器6的部位，并且防水密封垫9通过支撑骨架8与壳体1之间 的轻微挤压变形，将安装间隙完全密封住，同时与第三电连接器6和第四电连接器7侧壁完全贴紧，进一步保证密封效果，同时通过第四电连接器7起到相应的定位安装的效果。
本实施例中的电池包通过电芯2作为电源供电，并且采用单节21700电芯，适用于的电动工具并不仅局限于无绳类手持电动工具，还包括园林工具，无绳吸尘器，直流空压机等采用二次电池作为动力源的动力作业设备；大大提高了电池包的适用范围，并且整体结构简单，还能够作为便携式的移动电源使用，体积小巧，功能性更强。
并且第一电连接器4和第二电连接器5至少包括沿着电芯2的正负极轴线方向延伸的纵向折弯段，即直角形折弯第一电连接器4和第二电连接器5分别用于连接电芯的正负极和电路板3。
实施例2：
相较于实施例1，在本实施例中，电池包上设置的第三电连接器6的接口设有2个，包括一个针孔式端子10和一个USB接口，如图4所示，针孔式端子10和USB接口分别设置在电池包两端；针孔式端子10的设置同实施例1中的设置，USB接口设置在与针孔式端子10在电池包上相对的一侧。
通过USB接口的设置进一步提高本实施例电池包作为移动电源使用时的适用范围。
实施例3：
相较于实施例1，在本实施例中，壳体1包括用于容纳电芯2的第一壳体20、及至少一个第二壳体21，第二壳体21设置在电芯2的正极和/或负极端，并且第一壳体20与第二壳体21组成一用于容纳电芯2的密闭腔体；具体来说，如图3所示，本实施例中，第一壳体20和第二壳体21分别有且仅有一个，第二壳体21设置在电芯2的 正极或负极端，第一壳体20和第二壳体21之间具有一弯曲并闭合的分离边缘，分离边缘位于同一平面内；并且分离边缘所在平面与电芯2的正极和负极所在平面平行，即第二壳体21的边沿即为与第一壳体20配合的分离边缘，第二壳体21所在平面垂直于电芯2的正负极轴线方向，并且第一壳体20为桶形；壳体1容纳电芯2的径向周侧的外表面上没有分离的边缘，第一壳体20为一体式结构，第二壳体21内嵌式固定在第一壳体20的端部，具体来说，第一壳体20与第二壳体21通过卡接式结构相互嵌合卡接固定，第一壳体20与第二壳体21的分离边缘位于壳体1的外端面处；本实施例的壳体1结构侧壁没有可见的分离边缘，体现出一体式的设计感，作为移动电源使用时握持手感更好。
并且第一壳体20与第二壳体21之间密封连接，密封连接的方式为超声焊接，进一步提高整体的密封性。
实施例4：
相较于实施例1，在本实施例中，支撑骨架8端部延伸设有固定架14，其适于将第三电连接器6和第四电连接器7以夹设限位；如图6所示，第三电连接器6和第四电连接器7设置在电池包的同一侧，并且上下叠放设置，固定架14为支撑骨架8端部向下延伸出的两个固定脚，两个固定脚之间的空间用于对第三电连接器6和第四电连接器7以夹设限位，起到相应的定位安装的作用，同时固定架14会与防水密封垫9侧边压紧抵接，进一步提高防水密封垫9对电池包的密封效果。
请继续参照图7，图8和图9，电池包100包括壳体1’，内置于该壳体1’中的电芯2’或电芯组件，以及电路板3’，其还包括：
第一电连接器4’，其将电芯2’或电芯组件正负极的一端与电路板3’相连接；
第二电连接器5’，其将电芯2’或电芯组件正负极的另一端与电路板3’相连接；
第三电连接器6’，其配置于电路板3’，适于电连接到外部的用电设备，使得来自电芯2’的电力可以通过第三电连接器6’提供给用电设备；
第三电连接器6’具有孔式端子60’，其与外部的用电设备的针式端子200压力配合，具体参照图8和图9所示。
进一步地，孔式端子60’具有适于与针式端子200导电连接的环形接触部60a，针式端子200插入孔式端子60’内，环形接触部60a的环形接触面环形包裹针式端子200。
进一步地，环形接触部60a向孔式端子60’的中心方向突起，并适于形变，针式端子200在外力作用下压入环形接触部60a并使之发生形变。
进一步地，针式端子200与孔式端子60’之间的插拔压力8N≦F≦12N。
进一步地，第三电连接器6’包括与电路板3’固定连接的导电连接部60b和与针式端子200进行电连接的筒状连接部60c，导电连接部60b和筒状连接部60c导电连接，且筒状连接部60c的孔深L不小于4mm，具体参照图8所示。
进一步地，筒状连接部60c包括导电筒体601和位于导电筒体601内的膨胀内芯602，膨胀内芯602适于在外力作用下发生形变。
进一步地，膨胀内芯602具有若干导电弹性片60m，若干导电弹性片60m相互间隔呈环形阵列排布，并向环形中心方向突起，针式端子200在外力作用下压入环形中心区域，突起部分被挤压张开并与针式端子200弹性裹紧，具体参照图9，图10和图11所示。
本发明用于电连接到外部的用电设备的第三电连接器具有孔式端子，孔式端子与外部的用电设备的针式端子压力配合，使得来自电芯的电力可以通过第三电连接器提供给用电设备，孔式端子的配置使用能够便于电池包端口处的密封设计，包括防尘密封，防水密封等。
请继续参照图7，图8所示，电池包100包括壳体1’，内置于该壳体1’中的电芯2’或电芯组件，以及电路板3’，其还包括：
第一电连接器4’，其将电芯2’或电芯组件正负极的一端与电路板3’相连接；
第二电连接器5’，其将电芯2’或电芯组件正负极的另一端与电路板3’相连接；
第三电连接器6’，其配置于电路板3’，适于电连接到外部的用电设备，使得来自电芯2’的电力可以通过第三电连接器6’提供给用电设备；
第三电连接器6’具有朝向壳体外侧并与之贯通的开放型端口A，以及远离该端口A一端的封闭端B，开放型端口A适于外部的用电设备的端子插入，封闭端B延长与电路板3’固定导电连接。
进一步地，第三电连接器6’包括本体6m和与该本体6m连接一体并与开放型端口A相对的导电端子6n，导电端子6n至少部分被本体6m密封包裹，具体参照图9，图10和图11所示。
进一步地，导电端子6n与本体6m注塑一体。
进一步地，导电端子6n包括与电路板3’固定连接的导电连接部和60b与针式端子200进行电连接的筒状连接部60c，筒状连接部60c包括导电筒体601和位于导电筒体601内的膨胀内芯602，膨胀内芯602适于在外力作用下发生形变。
进一步地，膨胀内芯602具有若干导电弹性片60m，若干导电弹 性片60m相互间隔呈环形阵列排布，并向环形中心方向突起，针式端子200在外力作用下压入环形中心区域，突起部分被挤压张开并与针式端子200弹性裹紧，具体参照图9所示。
进一步地，第三电连接器6’与壳体1’之间夹设布置有密封垫9’，密封垫9’适于密封开放型端口A与壳体1’之间的安装间隙。
本发明用于电连接到外部的用电设备的第三电连接器具有朝向壳体外侧并与之贯通的开放型端口，以及远离该端口一端的封闭端，开放型端口适于外部的用电设备的端子插入，使得来自电芯的电力可以通过第三电连接器提供给用电设备，封闭端延长与电路板固定导电连接，实现电路导通，由于第三电连接器仅具有朝向壳体外侧的开放型端口，另一端封闭，如此可以有效防尘、防水管理。
请继续参照图12和图13所示，电池包100包括壳体1’，内置于该壳体1’中的电芯2’或电芯组件，以及电路板3’，其还包括：
第一电连接器4’，其将电芯2’或电芯组件正负极的一端与电路板3’相连接；
第二电连接器5’，其将电芯2’或电芯组件正负极的另一端与电路板3’相连接；
第三电连接器6’，其配置于电路板3’，适于电连接到外部的用电设备，使得来自电芯2’的电力可以通过第三电连接器6’提供给用电设备；
第四电连接器7’，其配置于电路板3’，适于电连接到外部充电源，使得通过第四电连接器7’向所述电芯提供电荷；
第三电连接器6’和第四电连接器7’层叠布置于电池包100的同一侧。
进一步地，电路板3’具有与第四电连接器7’相对应的安装缺口 30’，第四电连接器7’对应安装于安装缺口30’内，并其一端面70至少局部与电路板3’基本齐平，第三电连接器6’层叠于该端面70。
进一步地，第三电连接器6’具有朝向壳体1’外侧并与之贯通的开放型端口A，以及远离该端口A一端的封闭端B，开放型端口A适于外部的用电设备的端子插入，封闭端B延长与电路板3’固定导电连接。
进一步地，第三电连接器6’包括本体6m和与该本体6m连接一体的导电端子6n，导电端子6n一端开放，一端封闭，开放的一端被本体6m密封包裹，封闭的一端至少部分延长贯穿本体6m与电路板3’固定导电连接。
进一步地，导电端子6n封闭的一端呈圆弧90度固定焊接于电路板3’。
进一步地，本体6m的两侧在电路板3’宽度方向上分别设置有凸耳6p，凸耳6p和电路板3’对应布置有适于连接件6q穿过的连接孔，连接件6q对应穿过连接孔将二者固定。
进一步地，第三电连接器6’和第四电连接器7’层叠后的高度H范围为8mm-10mm。
本发明将第三电连接器和第四电连接器层叠布置于所述电池包的同一侧，第三电连接器适于电连接到外部的用电设备，使得来自电芯的电力可以通过第三电连接器提供给用电设备；第四电连接器适于电连接到外部充电源，使得通过第四电连接器向电芯提供电荷；如此，本发明提供的电池包的另一侧还可以拓展作其它用，如再布置一个USB-A接口等。
另外，上述第四电连接器7’优选采用type-c接口，其一方面不仅适于电连接到外部充电源，使得通过第四电连接器7’向所述电芯 提供电荷，另一方面而且还可以电连接到外部的用电设备，使得来自电芯2’的电力可以通过第四电连接器7’提供给用电设备。
以上仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (20)

  1. 一种电池包，包括壳体，内置于该壳体中的电芯或电芯组件，以及电路板，其特征在于，还包括：
    第一电连接器，其将所述电芯或所述电芯组件正负极的一端与所述电路板相连接；
    第二电连接器，其将所述电芯或所述电芯组件正负极的另一端与所述电路板相连接；
    第三电连接器，其配置于所述电路板，适于电连接到外部的用电设备，使得来自电芯的电力可以通过所述第三电连接器提供给用电设备；
    所述第三电连接器具有孔式端子，其与外部的用电设备的针式端子压力配合。
  2. 根据权利要求1所述的电池包，其特征在于：所述孔式端子具有适于与所述针式端子导电连接的环形接触部，所述针式端子插入所述孔式端子内，所述环形接触部的环形接触面环形包裹所述针式端子。
  3. 根据权利要求2所述的电池包，其特征在于：所述环形接触部向所述孔式端子的中心方向突起，并适于形变，所述针式端子在外力作用下压入所述环形接触部并使之发生形变。
  4. 根据权利要求1至3任一所述的电池包，其特征在于：所述针式端子与所述孔式端子之间的插拔压力8N≦F≦12N。
  5. 根据权利要求1所述的电池包，其特征在于：所述第三电连接器包括与所述电路板固定连接的导电连接部和与所述针式端子进行电连接的筒状连接部，所述导电连接部和所述筒状连接部导电连接，且所述筒状连接部的孔深不小于4mm。
  6. 根据权利要求5所述的电池包，其特征在于：所述筒状连接部包括导电筒体和位于所述导电筒体内的膨胀内芯，所述膨胀内芯适于在外力作用下发生形变。
  7. 根据权利要求6所述的电池包，其特征在于：所述膨胀内芯具有若干导电弹性片，若干所述导电弹性片相互间隔呈环形阵列排布，并向环形中心方向突起，所述针式端子在外力作用下压入环形中心区域，突起部分被挤压张开并与所述针式端子弹性裹紧。
  8. 一种电池包，包括壳体，内置于该壳体中的电芯或电芯组件，以及电路板，其特征在于，还包括：
    第一电连接器，其将所述电芯或所述电芯组件正负极的一端与所述电路板相连接；
    第二电连接器，其将所述电芯或所述电芯组件正负极的另一端与所述电路板相连接；
    第三电连接器，其配置于所述电路板，适于电连接到外部的用电设备，使得来自电芯的电力可以通过所述第三电连接器提供给用电设备；
    所述第三电连接器具有朝向壳体外侧并与之贯通的开放型端口，以及远离该端口一端的封闭端，所述开放型端口适于外部的用电设备的端子插入，所述封闭端延长与所述电路板固定导电连接。
  9. 根据权利要求8所述的电池包，其特征在于：所述第三电连接器包括本体和与该本体连接一体并与所述开放型端口相对的导电端子，所述导电端子至少部分被所述本体密封包裹。
  10. 根据权利要求8所述的电池包，其特征在于：所述导电端子与所述本体注塑一体。
  11. 根据权利要求9所述的电池包，其特征在于：所述导电端子 包括与所述电路板固定连接的导电连接部和与所述针式端子进行电连接的筒状连接部，所述筒状连接部包括导电筒体和位于所述导电筒体内的膨胀内芯，所述膨胀内芯适于在外力作用下发生形变。
  12. 根据权利要求11所述的电池包，其特征在于：所述膨胀内芯具有若干导电弹性片，若干所述导电弹性片相互间隔呈环形阵列排布，并向环形中心方向突起，所述针式端子在外力作用下压入环形中心区域，突起部分被挤压张开并与所述针式端子弹性裹紧。
  13. 根据权利要求8或9所述的电池包，其特征在于：所述第三电连接器与所述壳体之间夹设布置有密封垫，所述密封垫适于密封所述开放型端口与所述壳体之间的安装间隙。
  14. 一种电池包，包括壳体，内置于该壳体中的电芯或电芯组件，以及电路板，其特征在于，还包括：
    第一电连接器，其将所述电芯或所述电芯组件正负极的一端与所述电路板相连接；
    第二电连接器，其将所述电芯或所述电芯组件正负极的另一端与所述电路板相连接；
    第三电连接器，其配置于所述电路板，适于电连接到外部的用电设备，使得来自电芯的电力可以通过所述第三电连接器提供给用电设备；
    第四电连接器，其配置于所述电路板，适于电连接到外部充电源，使得通过第四电连接器向所述电芯提供电荷；
    所述第三电连接器和所述第四电连接器层叠布置于所述电池包的同一侧。
  15. 根据权利要求14所述的电池包，其特征在于：所述电路板具有与所述第四电连接器相对应的安装缺口，所述第四电连接器对应 安装于所述安装缺口内，并其一端面至少局部与所述电路板基本齐平，所述第三电连接器层叠于该端面。
  16. 根据权利要求15所述的电池包，其特征在于：所述第三电连接器具有朝向壳体外侧并与之贯通的开放型端口，以及远离该端口一端的封闭端，所述开放型端口适于外部的用电设备的端子插入，所述封闭端延长与所述电路板固定导电连接。
  17. 根据权利要求16所述的电池包，其特征在于：所述第三电连接器包括本体和与该本体连接一体的导电端子，所述导电端子一端开放，一端封闭，开放的一端被所述本体密封包裹，封闭的一端至少部分延长贯穿所述本体与所述电路板固定导电连接。
  18. 根据权利要求17所述的电池包，其特征在于：所述导电端子封闭的一端呈圆弧90度固定焊接于所述电路板。
  19. 根据权利要求17所述的电池包，其特征在于：所述本体的两侧在所述电路板宽度方向上分别设置有凸耳，所述凸耳和所述电路板对应布置有适于连接件穿过的连接孔，连接件对应穿过连接孔将二者固定。
  20. 根据权利要求14至19任一所述的电池包，其特征在于：所述第三电连接器和所述第四电连接器层叠后的高度范围为8mm-10mm。
PCT/CN2021/103009 2020-06-30 2021-06-29 电池包 Ceased WO2022002023A1 (zh)

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