WO2022206162A1 - 电池及采用该电池的电子设备 - Google Patents

电池及采用该电池的电子设备 Download PDF

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Publication number
WO2022206162A1
WO2022206162A1 PCT/CN2022/074404 CN2022074404W WO2022206162A1 WO 2022206162 A1 WO2022206162 A1 WO 2022206162A1 CN 2022074404 W CN2022074404 W CN 2022074404W WO 2022206162 A1 WO2022206162 A1 WO 2022206162A1
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WO
WIPO (PCT)
Prior art keywords
casing
battery
flexible circuit
lead
electrode
Prior art date
Application number
PCT/CN2022/074404
Other languages
English (en)
French (fr)
Inventor
黄靓靓
王枫
汪经国
朱爽
雷裕东
Original Assignee
比亚迪股份有限公司
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 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Priority to KR1020237022127A priority Critical patent/KR20230113794A/ko
Priority to EP22778350.3A priority patent/EP4254624A1/en
Priority to JP2023540642A priority patent/JP2024509032A/ja
Publication of WO2022206162A1 publication Critical patent/WO2022206162A1/zh
Priority to US18/215,008 priority patent/US20230344066A1/en

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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
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1635—Details related to the integration of battery packs and other power supplies such as fuel cells or integrated AC adapter
    • 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
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular 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
    • H01M50/20—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
    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M50/20—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
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring 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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • 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 present disclosure relates to the field of batteries, and in particular, to a battery and an electronic device using the battery.
  • Electronic devices such as notebook computers, tablet computers, mobile phones, etc.
  • the installation method is basically the same, that is, a separate battery compartment needs to be set up for the battery in advance, and the battery and the battery compartment are basically The regular shape, in order to avoid other functional components, needs to give up the use of part of the space, which is not conducive to the thinning of electronic equipment.
  • the battery usually includes multiple cells. In order to meet the requirements of output voltage, output current, sampling, and control, more connection lines need to be set up, and the structure is complex and takes up a lot of space.
  • the present application discloses a battery and an electronic device using the battery, aiming to provide a battery structure that simplifies the battery structure, so that it can improve the space utilization rate inside the electronic device and help realize the Thinner.
  • the plan is as follows:
  • a battery is applied to an electronic device, the electronic device includes a housing formed with a housing space and a plurality of functional devices, the plurality of functional devices are housed in the housing and occupy part of the housing space of the housing,
  • the battery includes:
  • a plurality of electrode assemblies respectively set to a predetermined size and arranged in a predetermined position, so as to roughly occupy the remaining space of the accommodation space; a lead-out portion is provided at a predetermined position of the electrode assembly;
  • a casing protruding outward from a predetermined position and correspondingly forming a plurality of accommodating grooves inside, the plurality of accommodating grooves are matched with the external dimensions of the plurality of electrode assemblies to correspondingly accommodate the plurality of electrode assemblies;
  • the flexible circuit forms an integral structure with the housing, and is arranged according to the predetermined series/parallel relationship of the plurality of electrode assemblies and the position of the lead-out portion, the flexible circuit includes an output end and a plurality of connection portions, and the plurality of Each connection part is used for connecting with the corresponding lead-out part to electrically connect the plurality of electrode assemblies; the output end extends out of the casing to realize electrical lead-out.
  • the flexible circuit further includes a wire portion, and the wire portion is integrally formed inside the housing;
  • connection parts and the output end are disposed on the wire part, and the connection parts protrude from the inside of the casing and extend to the corresponding lead-out parts.
  • the housing includes:
  • a second casing disposed opposite to the first casing and defining the receiving space together with the first casing, a predetermined position of the second casing is recessed in a direction away from the first casing to form the plurality of receiving grooves;
  • the flexible circuit is attached to the inner wall of the first housing.
  • the housing includes:
  • a second casing disposed opposite to the first casing and defining the receiving space together with the first casing, a predetermined position of the second casing is recessed in a direction away from the first casing to form the plurality of receiving grooves;
  • the flexible circuit is attached to the inner wall of the second shell and distributed in the non-stretched area of the second shell.
  • the flexible circuit includes:
  • a flexible circuit layer attached to the inner wall of the housing and including the wire portion and the connection portion and the output end;
  • the insulating layer covers the outer side of the flexible circuit layer and exposes the connection part and the output end.
  • the flexible circuit layer includes a plurality of wire segments, and the plurality of wire segments are predetermined according to the predetermined series/parallel relationship and the positions of the lead-out portion and the output end;
  • At least one of the connecting portion and the output end is integrally prefabricated with the wire segment
  • the insulating layer covers the plurality of wire segments.
  • the insulating layer is formed by coating the surface of the wire segment with an insulating material.
  • the electrode assembly includes a plurality of stacked positive electrode sheets, separators and negative electrode sheets, the positive electrode sheet is provided with a positive electrode tab, and the negative electrode sheet is provided with a negative electrode tab;
  • a plurality of the positive electrode tabs of each electrode assembly are collectively connected to form a positive electrode lead-out portion, and a plurality of the negative electrode lugs are collectively connected to form a negative electrode lead-out portion;
  • the connecting portion protrudes out of the wire segment and extends to a position where it is butted with the corresponding positive or negative lead-out portion.
  • the insulating layer is an insulating film, and the insulating film is laminated and attached to the outer side of the flexible circuit layer and combined with the housing.
  • the application also discloses an electronic device, comprising:
  • the functional devices are installed in the housing and occupy a part of the accommodation space;
  • the electronic device further includes the aforementioned battery
  • the battery roughly occupies the remaining space of the receiving space.
  • the functional device of the electronic device and the shape of the battery cooperate with each other, and the electrode assembly and the corresponding functional device form a mutual avoidance and complementary relationship in terms of space occupation, so as to achieve sufficient storage space. use.
  • the flexible circuit is integrally formed on the inner side of the casing by taking advantage of the convenient forming and layout of the flexible circuit, which can simplify the circuit design of the battery. In this way, the utilization rate of the internal space of the electronic device can be improved, and it is convenient to realize the thinning of the electronic device.
  • FIG. 1 is a schematic diagram of an exploded structure of an electronic device in a preferred embodiment.
  • FIG. 2 is a schematic structural diagram of a battery in an electronic device in a preferred embodiment.
  • FIG. 3 is a schematic structural diagram of the electrode assembly and the flexible circuit in the battery shown in FIG. 2 in an embodiment.
  • FIG. 4 is a schematic structural diagram of the electrode assembly and the flexible circuit in the battery shown in FIG. 2 in another embodiment.
  • FIG. 5 is a schematic diagram of the distribution of electrode assemblies in the battery shown in FIG. 2 .
  • FIG. 6 is a schematic diagram of the distribution of flexible circuits in the battery shown in FIG. 2 .
  • FIG. 7 is a schematic diagram of the connection of the electrode assembly and the connection circuit in the battery shown in FIG. 2 .
  • FIG. 8 is a schematic structural diagram of the electrode assembly and the first casing shown in FIG. 4 in an embodiment.
  • FIG. 9 is a schematic structural diagram of the electrode assembly in the battery shown in FIG. 2 .
  • FIG. 10 is a schematic diagram of the connection structure of the electrode assembly and the wire portion shown in FIG. 9 .
  • the electronic device 100 includes a casing 10 , a battery 20 and a functional device 30 .
  • the housing 10 is formed with an accommodation space for accommodating the battery 20 and the functional device 30 .
  • the functional device 30 is installed in the housing 10 and occupies a part of the receiving space.
  • the battery 20 roughly occupies the remaining space of the receiving space.
  • the electronic device 100 may be a portable device such as a notebook computer and a tablet computer, or may be other smart electronic products, such as a mobile phone, a wearable device, and the like.
  • the casing 10 is correspondingly the casing of the host part of the notebook computer, and the functional devices 30 mainly include a motherboard, a CPU, a hard disk, a memory, a graphics card, a sound card, a radiator, and the like.
  • the battery 30 is the power supply battery of the notebook computer.
  • the side facing the housing space inside the housing will occupy a part of the housing space, and the specifications of functional devices are diversified. , the external dimensions are different. After the assembly is completed, due to the influence of the unevenness of the functional devices and the arrangement interval between the functional devices, the remaining storage space is irregular and uneven.
  • an independent battery compartment is set in the housing 10, and the battery compartment is set in a regular shape to facilitate design and processing.
  • the battery compartment needs to avoid the functional device 30 as a whole, resulting in more irregular spaces that cannot be used. Be exploited.
  • the functional device 30 is installed in the housing 10 and occupies a part of the accommodation space, and the battery 20 roughly occupies the remaining space of the accommodation space.
  • “substantially” here means that the remaining space cannot be strictly and completely occupied due to factors such as processing accuracy limitations, assembly requirements, electrical safety requirements, etc., so the battery 20 can generally occupy the remaining space of the accommodation space. , which can reflect that the battery 20 and the functional device 30 avoid each other and complement each other in volume so that the volume of the accommodation space can be utilized as much as possible.
  • the battery 20 disclosed in the embodiments of the present application includes a casing 210 , a plurality of electrode assemblies 220 and a flexible circuit 230 .
  • the plurality of electrode assemblies 220 respectively have predetermined external dimensions and are arranged in predetermined positions.
  • the electronic device 100 needs to implement a specific function, and the functional device 30 thereof can be set in the casing 10 before the battery 20 .
  • the shape and distribution of the remaining space in the casing 10 are also basically determined, so that the shape and distribution of the remaining space can be divided into the external dimensions and positional arrangement of the plurality of electrode assemblies 220 in advance.
  • the series and/or parallel relationship between the plurality of electrode assemblies 220 may be preset to set the output current, voltage, and the like.
  • the electrode assemblies 220 At least two electrode assemblies 220 have different heights, which can be set according to the volume occupation of the functional device 30 .
  • the electrode assembly 220 and the aforementioned plurality of functional devices 30 can be arranged in a height-avoiding relationship with each other, that is, when the battery 20 is placed in the aforementioned accommodation space, the functional device 30 of the electronic device 100 occupies a part of the accommodation space, and the battery 20 occupies a part of the accommodation space.
  • the external dimensions and positional arrangement of the electrode assemblies 220 are pre-set, and the electrode assemblies 220 are set to a height suitable for the functional devices 30 at the corresponding positions.
  • the battery 20 roughly occupies the remaining space of the aforesaid accommodation space, thereby realizing full utilization of the accommodation space.
  • the shape of the electrode assembly 220 may be a regular shape, so as to be formed by a rolling process.
  • the electrode assembly 220 may be substantially configured as a rectangular parallelepiped.
  • the electrode assembly 220 can also be set in an irregular shape, that is, a special shape, for example, can be set in a diamond shape, a fan shape, a trapezoid shape, and the like.
  • the electrode assembly 220 may be formed by lamination.
  • the shape of the electrode assembly 220 can be set according to the setting requirements of the receiving space.
  • a lead-out portion 2201 is provided at a predetermined position of the electrode assembly 220 , so as to realize series and parallel connection of a plurality of electrode assemblies 220 .
  • a predetermined position of the casing 210 protrudes outward, and a plurality of receiving grooves 2121 are correspondingly formed inside the casing 210 .
  • the plurality of accommodating grooves 2121 match the external dimensions of the plurality of electrode assemblies 220 to accommodate the plurality of electrode assemblies 220 correspondingly.
  • the flexible circuit 230 and the housing 210 form an integral structure, and are arranged according to the predetermined series/parallel relationship of the plurality of electrode assemblies 220 and the position of the lead-out portion 2201 .
  • the flexible circuit 230 includes an output end 2303 and a plurality of connection parts 2302 , and the plurality of connection parts 2302 are used for connecting with the corresponding lead-out parts 2201 to electrically connect the plurality of electrode assemblies 220 .
  • the output end 2303 extends out of the housing 210 for electrical extraction.
  • the flexible circuit 230 and the casing 210 form an integral structure, which can be understood as the main body of the flexible circuit 230 is fixed to the inner side of the casing 210 through bonding, inlaying, welding, wrapping and other processes.
  • the output end 2303 and the connecting portion 2302 of the flexible circuit 230 can be protruded from the inner side of the casing 210, so as to realize electrical connection with the plurality of electrode assemblies 220 through the connecting portion 2302, and through the output The terminal 2303 realizes the electrical extraction of the battery 20 .
  • the flexible circuit 230 includes a wire portion 2301 , the connection portion 2302 and the output end 2303 .
  • the wire portion 2301 is integrally formed inside the housing 210 .
  • the plurality of connecting portions 2302 and the output ends 2303 are disposed on the wire portion 2301 , and the connecting portions 2302 protrude from the inner side of the housing 210 and extend to the corresponding lead-out portions 2201 .
  • the series and/or parallel connection between the plurality of electrode assemblies 220 may be preset in advance relationship to set the output current, voltage, etc. If the connection of the plurality of electrode assemblies 220 is completed by using ordinary lines with a film coating, the non-foldability of the ordinary lines will reduce the safety performance of the battery. In addition, if the lines are directly connected inside the battery, the overall layout will be messy and complicated. Therefore, this patent solves the risks brought by the non-folding of ordinary circuits by using flexible circuits that can be freely bent, rolled and folded.
  • each positive and negative terminal connected to the electrode assembly 220 on the flexible circuit 230 is led out to the electrode assembly 220 at the corresponding position, and is connected to the electrode assembly 220 at the corresponding position.
  • the positive and negative pins drawn out of the components 220 at corresponding positions are connected to realize the series/parallel connection of the plurality of electrode components 220 .
  • the housing 210 includes a first casing 2110 and a second casing 2120 .
  • the first casings 2110 are substantially in the same plane.
  • the first casing 2110 is substantially a flat plate-like structure.
  • the second casing 2120 is disposed opposite to the first casing 2110 and defines the receiving space together with the first casing 2110 .
  • a predetermined position of the second casing 2120 is recessed in a direction away from the first casing 2110 to form the plurality of receiving grooves 2121 .
  • the casing 210 can be an aluminum-plastic film, and the first casing 2110 is a relatively flat side of the aluminum-plastic film.
  • the second housing 2120 can be deep-drawn to form the recessed receiving groove 2121 at a predetermined position.
  • the aluminum-plastic film can be punched to different depths according to specific positions, while the flexible circuit 230 cannot be punched, so the flexible circuit
  • the 230 needs to be designed to the bottom plane film in the aluminum plastic film without punching, and at the same time, the connection parts 2302 corresponding to the positions of each electrode assembly 220 are reserved.
  • the positive/negative lead-out portions 2201 of each position of the electrode assembly 230 are electrically connected to the corresponding connection portions 2302 of the flexible circuit 230 respectively.
  • the connecting portion 2302 of the electrode assembly 220 is usually formed by spot welding of the tabs of each pole piece.
  • the lead-out portion 2201 and the connection portion 2302 may be electrically connected by spot welding or riveting, so as to complete the series/parallel connection between the individual electrode assemblies 220 inside the battery 20 .
  • the flexible circuit 230 may form an integral structure with the first casing 2110 , or may form an integral structure with the second casing 2120 .
  • the flexible circuit 230 may be attached to the inner wall of the first housing 2110 .
  • the flexible circuit 230 can be attached to the inner wall of the second casing 2120. Since the flexible circuit 230 cannot be punched or drawn, a non-drawing distributed in the second casing 2120 is required. District 2122.
  • the flexible circuit 230 includes a flexible circuit layer and an insulating layer 2304 .
  • the flexible circuit layer is attached to the inner wall of the housing 210 .
  • the flexible circuit layer may include a wire portion 2301 , the connecting portion 2302 and the output end 2303 .
  • the positive/negative lead-out portions 2201 of the electrode assemblies 230 at various positions can also be close to the first casing 2110.
  • the connecting portion 2302 can be bent from the inner wall of the first casing 2110 and extend to the positive/negative electrode lead-out portion of the corresponding position of the electrode assembly 230. 2201.
  • the insulating layer 2304 covers the outer side of the flexible circuit layer and exposes the connecting portion 2302 and the output end 2303 , so that the insulating layer 2304 isolates the side of the flexible circuit layer close to the electrode assembly 220 , play the role of insulation and protection, and at the same time prevent the electrolyte in the later battery from corroding the circuit.
  • the flexible circuit layer includes a plurality of wire segments, and the plurality of wire segments are predetermined according to the predetermined series/parallel relationship and the positions of the lead-out portion 2201 and the output end 2303 . At least one of the connecting portion 2302 and the output end 2303 is integrally pre-formed with the wire segment.
  • the battery 20 includes five electrode assemblies 220 , which are specifically denoted as a first electrode assembly 2210 , a second electrode assembly 2220 , a third electrode assembly 2230 , and a first electrode assembly 2230 .
  • five electrode assemblies 220 are all rectangular parallelepipeds, and each electrode assembly has three dimensions: length, width, and height, where the width and length are respectively the dimensions of the electrode assembly in two directions perpendicular to the height direction. As mentioned above, among the five electrode assemblies 220, at least two electrode assemblies 220 have different heights.
  • the heights of the five electrode assemblies 220 are different, and among the five electrode assemblies 220 , at least two electrode assemblies 220 have a width different, and/or the lengths of at least two electrode assemblies 220 are different.
  • the lengths, widths and heights of the first to fifth electrode assemblies are different from each other. It can be set according to specific needs during implementation.
  • the first electrode assembly 2210, the second electrode assembly 2220, the third electrode assembly 2230, the fourth electrode assembly 2240 and the fifth electrode assembly 2250 are arranged in a predetermined form, with intervals between adjacent electrode assemblies.
  • the lead-out portion 2201 of each electrode assembly 220 needs to be connected to the flexible circuit 230, and is disposed correspondingly toward the space. As shown in FIG.
  • the positive electrode lead-out portion and the negative electrode lead-out portion of the second electrode assembly 2220 are arranged in the interval between the second electrode assembly 2220 and the third electrode assembly 2230, and the positive electrode lead-out portion and the negative electrode lead-out portion of the second electrode assembly 2220 are arranged In the interval between the second electrode assembly 2220 and the third electrode assembly 2230, the positive lead-out portion and the negative lead-out portion of the third electrode assembly 2230 are arranged in the interval between the third electrode assembly 2230 and the fifth electrode assembly 2250, The positive lead-out portions of the fourth electrode assembly 2240 and the fifth electrode assembly 2250 are disposed in the interval between the fourth electrode assembly 2240 and the fifth electrode assembly 2250, and the negative lead-out portion of the fifth electrode assembly 2250 is disposed in the fifth electrode assembly 2250 In the space between the first electrode assembly 2210 and the first electrode assembly 2210, the positive electrode lead-out portion, the negative electrode lead-out portion of the first electrode assembly 2210, and the negative electrode lead-out portion of the fourth electrode assembly 2240 are disposed in the
  • the wire portion 2301 of the flexible circuit 230 is arranged into a plurality of wire segments.
  • the wire portion 2301 can be arranged into four sections, namely, a first wire section 2310 , a second wire section 2320 , a third wire section 2330 and a fourth wire section 2340 .
  • the first wire segment 2310 is connected to the positive electrode lead-out portion of the first electrode assembly 2210 , and is reused as the positive output end of the battery 20 .
  • One end of the second wire segment 2320 is connected to the negative lead-out portion of the first electrode assembly 2210 , and the other end branches out into two connecting portions 2302 , which are respectively connected to the positive lead-out portions of the second electrode assembly 2220 and the third electrode assembly 2230 .
  • the two ends of the third wire segment 2330 are respectively divided into two connecting parts 2302, the two connecting parts 2302 at one end are respectively connected to the negative lead-out part of the second electrode assembly 2220 and the negative lead-out part of the fifth electrode assembly 2250, and the two connecting parts 2302 at the other end are respectively connected
  • the connecting portions 2302 are respectively connected to the positive electrode lead-out portion of the fourth electrode assembly 2240 and the positive electrode lead-out portion of the fifth electrode assembly 2250 .
  • One end of the fourth wire segment 2340 is divided into two connecting parts 2320, which are respectively connected to the negative lead-out part of the fourth electrode assembly 2240 and the negative lead-out part of the fifth electrode assembly 2250, and the other end is reused as the negative output end of the battery 20 .
  • the first electrode assembly 2210, the second electrode assembly 2220 and the third electrode assembly 2230 in parallel, and the fourth electrode assembly 2240 and the fifth electrode assembly 2250 in parallel can be connected in series.
  • the positive and negative outputs of the battery 20 are realized.
  • the insulating layer 2304 covers the plurality of wire segments.
  • the insulating layer 2304 is formed by coating the surface of the wire segment with an insulating material.
  • the insulating layer 2304 can also be an insulating film, and the insulating film is laminated and attached to the outer side of the flexible circuit layer 2312 and combined with the housing 210 .
  • the housing 210 can be an aluminum-plastic film, and the flexible circuit layer and the insulating layer 2304 can also be designed into the aluminum-plastic film in advance.
  • the nylon layer 2111, the Al layer 2112 and the PP layer 2113 are embedded with a flexible circuit layer and an insulating layer 2304 for corrosion resistance and insulation in advance, and then the positive and negative electrodes are drawn out through the positive and negative ear pins to realize the lead-out of the electrodes. .
  • the electrode assembly 220 is a pole core, including a positive electrode sheet 221 , a separator 222 and a negative electrode sheet 223 .
  • the electrode assembly 220 includes a plurality of stacked positive electrode sheets 221 , separators 222 and negative electrode sheets 223 , the positive electrode sheet 221 is provided with a positive electrode tab 2211 , and the negative electrode sheet 223 is provided with a Negative tab 2231.
  • a plurality of the positive electrode tabs 2211 of each electrode assembly 220 are collectively connected to form a positive electrode lead-out portion, and a plurality of the negative electrode lugs 2231 are collectively connected to form a negative electrode lead-out portion.
  • the connecting portion 2302 protrudes from the flexible circuit 230 and extends to a position where it is butted with the corresponding positive or negative lead-out portion, so as to form an electrical connection with the corresponding positive or negative lead-out portion.
  • the functional device 30 of the electronic device 100 and the battery 20 cooperate in shape, and the electrode assembly 220 and the corresponding functional device 30 form a space occupancy that avoids and complements each other. relationship, so as to make full use of the storage space.
  • the flexible circuit 230 is formed integrally inside the casing 210 by taking advantage of the advantages of convenient molding and layout, which can simplify the circuit design of the battery 20 and make the design and layout of the battery 20 simpler. In this way, the utilization rate of the internal space of the electronic device 100 can be improved, and it is convenient to realize the lightness and thickness of the electronic device 100 .
  • the flexible circuit 230 is accommodated in the casing, and is arranged to electrically connect the plurality of electrode assemblies according to the predetermined series/parallel relationship of the plurality of electrode assemblies 220 and the position of the lead-out portion 2201 .
  • the outer casing 210 is wired to realize the electrical connection of the electrode assembly 220, and the outer casing is extended through the output end to realize electrical extraction, which can simplify the external circuit and reduce the occupation of the internal space of the electronic device 100 by the external circuit and components.
  • the flexible circuit further includes a wire portion 2301 and a plurality of connecting portions 2302 disposed on the wire portion 2301 .
  • the wire portion 2301 is arranged on the peripheral side of the electrode assembly 220 according to the predetermined series/parallel relationship of the plurality of electrode assemblies 220 and the position of the lead-out portion 2201 .
  • the plurality of connecting portions 2302 are disposed on the wire portion 2301 and are electrically connected to the lead-out portions 2201 at corresponding positions.
  • the output end 2303 is disposed on the wire portion 2301 .
  • the electrode assembly 220 can be made by winding a positive electrode sheet, a separator and a negative electrode sheet, and electrode tabs are reserved on the positive electrode sheet and the negative electrode sheet.
  • the formed positive electrode lead-out portion and the negative electrode lead-out portion formed by concentrated welding of the negative electrode tabs.
  • the lead-out portion 2201 may be disposed on the side surface of the electrode assembly 220 , and the lead-out portions 2201 of a plurality of electrode assemblies 220 may be generally disposed on the same plane, so as to facilitate the layout of the flexible circuit 230 .
  • the wire portion 2301 may include a plurality of wire segments predetermined according to the predetermined series/parallel relationship and the position of the lead-out portion. Since the plurality of electrode assemblies 220 have different sizes in order to meet the requirements of space occupation, in order to meet the requirements of output power, they need to be connected according to a predetermined series and parallel relationship.
  • the wire portion 2301 is preset as a plurality of wire segments, which can more conveniently complete a predetermined series/parallel connection, especially a series connection, according to the arrangement of the electrode assemblies 220 .
  • the connecting portion 2302 and the output end 2303 can be integrally prefabricated with the wire segment.
  • the connecting portions 2302 can be integrally formed with the corresponding wire segments, and the connecting portions 2302 are located at the ends of the corresponding wire segments.
  • the output end 2303 includes a positive output end and a negative output end, one of which is integrally formed with a wire segment, and the other can be formed by a wire segment.
  • the outer side of the wire portion is covered with an insulating film 240 to achieve electrical insulation protection. Parts of the connection portion 2302 and the output end 2303 are exposed, which facilitates electrical connection.
  • an interval may be set between adjacent electrode assemblies 220 .
  • the lead-out portion 2201 of each electrode assembly 220 needs to be connected to the flexible circuit 230, and is disposed correspondingly toward the space.
  • the portion of the wire portion 2301 between adjacent electrode assemblies 220 is embedded in the corresponding interval.
  • This arrangement facilitates the electrical connection between the flexible circuit 230 and the lead-out portion 2201 of the electrode assembly 220. Since the lead-out portion 2201 of the electrode assembly 220 needs to occupy part of the space, the wire portion 2301 of the flexible circuit 230 is embedded in the original In the reserved interval, it is equivalent to multiplexing this part of the space, which improves the space utilization rate and facilitates wiring.
  • the housing 210 may include a first casing 2110 and a second casing 2120 .
  • the first casings 2110 are generally located in the same plane, that is, the first casings 2110 are generally a flat film, forming a flat surface of the casing 210 .
  • the "substantially” here may be tolerances and errors caused by the influence of machining accuracy, or local irregularities due to the influence of local design requirements, etc., and the first housing 2110 may be substantially flat.
  • a predetermined position of the second casing 2120 is recessed in a direction away from the first casing 2110 to form the plurality of receiving grooves 2121 .
  • the shape of each receiving groove 2121 matches the corresponding electrode assembly 220 .
  • the peripheral sides of the first casing 2110 and the second casing 2120 are respectively provided with edge sealing parts, and the peripheral sides of the first casing 2110 and the second casing 2120 are sealed by the edge sealing parts connected to encapsulate the electrode assembly 220 and the flexible circuit 230 in the casing 210 .
  • the outer side of the output end 2303 is covered with a sealant layer (not shown in the figure).
  • the output end 2303 extends out of the casing 210 from between the two edge sealing parts, and the output end 2303 is sealedly connected to the corresponding position of the edge sealing part through the sealant layer, so as to realize the electric power of the battery 20 . lead out.
  • the lead-out portion 2201 of the electrode assembly 220 and the flexible circuit 230 may be disposed close to the first casing 2110 .
  • first casing 2110 By using the flat first casing 2110, neat wiring can be formed, and later stress deformation can be avoided as much as possible.

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Abstract

本申请公开了一种电池及采用该电池的电子设备。所述电子设备包括形成有收容空间的壳体、多个功能器件及电池。多个功能器件占据部分收容空间，电池大致占据剩余部分的收容空间。电池包括多个电极组件、外壳及柔性线路。外壳收容多个电极组件。柔性线路与外壳形成一体结构并根据所述多个电极组件的预定串/并联关系及引出部的位置布设。电极组件与相应的功能器件在空间的占用上形成相互避让、互补的关系，从而实现收容空间的充分利用。

Description

电池及采用该电池的电子设备
本公开要求于2021年03月30日提交中国专利局，申请号为202110340406.4，申请名称为“电池及采用该电池的电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及电池领域，具体涉及一种电池及采用该电池的电子设备。
背景技术
电子设备，诸如笔记本电脑、平板电脑、手机等，由于美观和便携性的要求，设计日趋轻薄化。通常，此类电子设备内部的功能部件的外形尺寸和布置各不相同，然而电池作为其关键部件，安装方式却基本相同，即需为电池预先设立单独的电池舱，且电池和电池仓基本为规则的外形，为避让其他功能部件，需要放弃部分空间的利用，不利于电子设备的轻薄化。同时，电池通常包括多个电芯，为满足输出电压、输出电流、采样、控制等需求，需要设置较多的连接线路，结构复杂且占用较多的空间。
发明内容
有鉴于此，本申请公开了一种电池及采用该电池的电子设备，旨在提供一种电池构造，简化电池结构，使其能够提高电子设备内部的空间利用率，有助于实现电子设备的轻薄化。
方案如下：
一种电池，应用于电子设备，所述电子设备包括形成有收容空间的壳体及多个功能器件，所述多个功能器件收容于所述壳体内并占据所述壳体的部分收容空间，所述电池包括：
多个电极组件，分别设置成预定尺寸规格并按预定位置排布，以大致占据所述收容空间的剩余空间；所述电极组件的预定位置设有引出部；
外壳，预定位置向外侧凸出并相应在内部形成多个收容槽，所述多个收容槽与所述多个电极组件的外形尺寸匹配以对应收容所述多个电极组件；及
柔性线路，与所述外壳形成一体结构，并根据所述多个电极组件的预定串/并联关系及所述引出部的位置布设，所述柔性线路包括输出端及多个连接部，所述多个连接部用于与相应的所述引出部连接以电性连接所述多个电极组件；所述输出端延伸出所述外壳以实现电引出。
在一较优实施方式中，所述柔性线路还包括线材部，所述线材部一体形成于所述外壳的内侧；
所述多个连接部及所述输出端设置于所述线材部上，所述连接部凸出于所述壳体内侧并延伸至相应的所述引出部。
在一较优实施方式中，所述外壳包括：
第一壳体，大致位于同一平面内；及
第二壳体，与所述第一壳体相对设置并与所述第一壳体共同限定出所述收容空间，所述第二壳体的预定位置向远离所述第一壳体的方向凹陷以形成所述多个收容槽；
所述柔性线路附着至所述第一壳体的内壁。
在一较优实施方式中，所述外壳包括：
第一壳体，大致位于同一平面内；及
第二壳体，与所述第一壳体相对设置并与所述第一壳体共同限定出所述收容空间，所述第二壳体的预定位置向远离所述第一壳体的方向凹陷以形成所述多个收容槽；
所述柔性线路附着至所述第二壳体的内壁并分布于所述第二壳体的非拉伸区域。
在一较优实施方式中，所述柔性线路包括：
柔性线路层，附着至所述外壳的内壁并包括所述线材部及所述连接部和所述输出端；及
绝缘层，包覆于所述柔性线路层的外侧并露出所述连接部及所述输出端。
在一较优实施方式中，所述柔性线路层包括多个线材段，所述多个线材段根据所述预定串/并联关系及所述引出部和所述输出端的位置预定；
所述连接部、所述输出端中的至少一者与其中一线材段一体预制成型；
所述绝缘层包覆所述多个线材段。
在一较优实施方式中，所述绝缘层由绝缘材料涂覆于所述线材段表面形成。
在一较优实施方式中，所述电极组件包括多个层叠设置的正极片、隔膜及负极片，所述正极片设有正极耳，所述负极片设有负极耳；
每个电极组件的多个所述正极耳集中连接形成正极引出部，多个所述负极耳集中连接形成负极引出部；
所述连接部凸出于所述线材段并延伸至与相应的正极引出部或负极引出部对接的位置。
在一较优实施方式中，所述绝缘层为绝缘膜，所述绝缘膜层压贴合于所述柔性线路层外侧并与所述外壳结合。
本申请还公开了一种电子设备，包括：
壳体，形成有收容空间；
多个功能器件，所述功能器件安装于所述壳体内并占据一部分所述收容空间；
其中，所述电子设备还包括前述电池；
所述电池大致占据所述收容空间的剩余空间。
前述电池和采用该电池的电子设备中，所述电子设备的功能器件和电池外形相互配合，电极组件与相应的功能器件在空间的占用上形成相互避让、互补的关系，从而实现收容空间的充分利用。同时，利用柔性线路成型和布设方便的特点，使其一体形成在壳体的内侧，能够简化电池的电路设计。如此，可提高电子设备内部空间的利用率，便于实现电子设备的轻薄化。
附图说明
本公开在上文提及的以及其他的目的和优点将结合附图在下文详细介绍：
图1为电子设备在一较优实施例中的分解结构示意图。
图2为电子设备中的电池在一较优实施例中的结构示意图。
图3为图2所示的电池中电极组件和柔性线路在一实施例中的结构示意图。
图4为图2所示的电池中电极组件和柔性线路在另一实施例中的结构示意图。
图5为图2所示的电池中电极组件的分布示意图。
图6为图2所示的电池中柔性线路的分布示意图。
图7为图2所示的电池中电极组件和连接线路的连接示意图。
图8为图4所示的电极组件和第一壳体在一实施例中的结构示意图。
图9为图2所示的电池中电极组件的结构示意图。
图10为图9所示的电极组件与线材部的连接结构示意图。
附图标记：
10                     壳体
20                     电池
30                     功能器件
100                    电子设备
210                    外壳
220                    电极组件
221                    正极片
222                    隔膜
223                    负极片
230                    柔性线路
2110                   第一壳体
2120                   第二壳体
2121                   收容槽
2122                   非拉深区
2201                   引出部
2211                   正极耳
2231                   负极耳
2210                   第一电极组件
2220                   第二电极组件
2230                   第三电极组件
2240                   第四电极组件
2250                   第五电极组件
2301                   线材部
2302                   连接部
2303                   输出端
2304                   绝缘层
2310                    第一线材段
2320                    第二线材段
2330                    第三线材段
2340                    第四线材段
具体实施方式
下面详细描述本公开的实施例，参考附图描述的实施例是示例性的，下面详细描述本公开的实施例。
如图1所示，电子设备100包括壳体10、电池20及功能器件30。所述壳体10形成有收容空间，用于收容所述电池20及所述功能器件30。
所述功能器件30安装于所述壳体10内,并占据一部分所述收容空间。所述电池20大致占据所述收容空间的剩余空间。
例如，在一些应用场景中，所述电子设备100可为笔记本电脑、平板电脑等便携设备，也可以为其他智能电子产品，如手机、穿戴设备等。以所述电子设备100为笔记本电脑为例，所述壳体10相应为笔记本电脑的主机部分的外壳，所述功能器件30主要有主板、CPU、硬盘、内存、显卡、声卡、散热器等。所述电池30则为笔记本电脑的供电电池。
在实际应用中，所述CPU、硬盘、内存、显卡、声卡、散热器安装于所述主板一侧后，朝向外壳内部收容空间的一侧会占据一部分所述收容空间，且功能器件规格多样化，外形尺寸各不相同，装配完成后，因功能器件的凹凸、功能器件间的排布间隔等影响，剩余的收容空间为不规则、不平整的形状。
通常情况下，所述壳体10内会设置独立的电池仓，且电池仓设置为规则的形状以方便设计和加工，电池仓需要整体避让所述功能器件30，造成较多的不规则空间无法被利用。
鉴于此，本申请公开的电子设备100中，所述功能器件30安装于所述壳体10内并占据一部分所述收容空间，所述电池20大致占据所述收容空间的剩余空间。需要说明的是，此处的“大致”是指因加工精度限制、装配要求、电气安全需求等因素不能严格完全占用前述剩余空间，故所述电池20大体上能够占用所述收容空间的剩余空间，能够体现所述电池20和所述功能器件30相互避让、体积互补以尽可能利用所述收容 空间的容积即可。
同时参图2至图4所示，为实现上述目的，本申请实施例公开的电池20包括外壳210、多个电极组件220和柔性线路230。
所述多个电极组件220分别具有预定的外形尺寸并按预定位置排布。在具体实施中，电子设备100需要实现特定功能，其功能器件30可先于电池20设定在壳体10内。相应的，壳体10内的剩余空间的形状和分布也基本确定，如此一来，可预先根据该剩余空间的形状和分布划分所述多个电极组件220的外形尺寸和位置排布，同时，为满足电池20能够向外输出电力的需求，可预先设定所述多个电极组件220之间的串联和/或并联关系，以设定输出电流、电压等。
各电极组件220中，至少两电极组件220的高度不同，可据功能器件30的体积占用设定。如此，所述电极组件220可与前述多个功能器件30在高度上设置成相互避让的关系，即电池20放置在前述收容空间内时，电子设备100的功能器件30占据一部分收容空间，电池20则根据功能器件30的布置预先设定好电极组件220的外形尺寸和位置排布，并将电极组件220设置成与相应位置的功能器件30适配的高度，例如，在一预定位置，当功能器件30的高度较高时，与之对应设置的电极组件220的高度相应设置的较低，当功能器件30的高度较低时，与之对应设置的电极组件220的高度相应设置的较高，从而使得电池20大致占据前述收容空间的剩余空间，实现收容空间的充分利用。
在具体实施中，所述电极组件220的形状可为规则的形状，以便于通过卷绕的工艺成型。例如，为降低加工的工艺难度，所述电极组件220可大致构造为长方体形。可以理解的是，所述电极组件220的也可设置为不规则的形状，即异形，例如可设置为菱形、扇形、梯形等等。在此情境下，所述电极组件220可采用叠片的方式成型。在实际应用中，电极组件220的形状可据收容空间的设置需求设定。
所述电极组件220的预定位置设有引出部2201，以便于实现多个电极组件220之间的串联、并联。
所述外壳210的预定位置向外侧凸出，并相应在外壳210的内部形成多个收容槽2121。所述多个收容槽2121与所述多个电极组件220的外形尺寸匹配，以对应收容所述多个电极组件220。
所述柔性线路230与所述外壳210形成一体结构，并根据所述多个电极组件220 的预定串/并联关系及所述引出部2201的位置布设。所述柔性线路230包括输出端2303及多个连接部2302，所述多个连接部2302用于与相应的所述引出部2201连接以电性连接所述多个电极组件220。所述输出端2303延伸出所述外壳210以实现电引出。
其中，所述柔性线路230与所述外壳210形成一体结构，可理解为所述柔性线路230的主体部分通过粘接、镶嵌、焊接、包覆等工艺与所述外壳210的内侧固定为一体，所述柔性线路230的输出端2303和连接部2302可由所述外壳210的内侧凸出，以便于通过所述连接部2302实现与所述多个电极组件220的电性连接，及通过所述输出端2303实现所述电池20的电引出。
例如，在一较优实施方式中，所述柔性线路230包括线材部2301、所述连接部2302和所述输出端2303。所述线材部2301一体形成于所述外壳210的内侧。所述多个连接部2302及所述输出端2303设置于所述线材部2301上，所述连接部2302凸出于所述外壳210的内侧并延伸至相应的所述引出部2201。
如前所述，所述多个电极组件220按预定位置排布后，为满足电池20能够向外输出电力的需求，可预先设定所述多个电极组件220之间的串联和/或并联关系，以设定输出电流、电压等。若采用带有覆膜普通的线路完成所述多个电极组件220的连接，普通线路的不可折叠性会减弱电池的安全性能，此外，线路若直接在电池内部连接会使整体布局凌乱化与复杂化，因此该专利通过运用可自由弯曲、卷绕并折叠的柔性线路解决普通线路不可折叠带来的风险。通过提前将各电极组件220之间的串/并联关系设计在柔性线路中，柔性线路230上每个与电极组件220相接的正负极连接端都引出到相应位置的电极组件220，与电极组件220在对应位置引出的正负极引脚相连接实现多个电极组件220的串/并联。
在另一较优实施方式中，所述外壳210包括第一壳体2110和第二壳体2120。
第一壳体2110大致位于同一平面内。换言之，所述第一壳体2110大致为一平整的板状结构。第二壳体2120与所述第一壳体2110相对设置，并与所述第一壳体2110共同限定出所述收容空间。所述第二壳体2120的预定位置向远离所述第一壳体2110的方向凹陷，以形成所述多个收容槽2121。
在实际应用中，所述外壳210可为铝塑膜，则第一壳体2110则为铝塑膜较为平整的一面。第二壳体2120则可在预定位置拉深形成凹陷的所述收容槽2121。
在具体实施中，根据所述多个电极组件220的预定的外形尺寸和预定位置排布， 可将铝塑膜需按照特定位置冲坑至不同的深度，而柔性线路230不能冲压，因此柔性线路230需设计至铝塑膜中不进行冲坑的底层平面膜，同时预留与各电极组件220对应位置的连接部2302。之后再将电极组件230各位置的正/负极引出部2201分别与柔性线路230相应的连接部2302电性连接。所述电极组件220的连接部2302通常由各极片的极耳集中点焊形成。引出部2201与连接部2302可通过点焊或者铆接等形式形成电性连接，以完成电池20内部的个电极组件220之间的串/并联。
所述柔性线路230可与所述第一壳体2110形成一体结构，也可与所述第二壳体2120形成一体结构。
例如，所述柔性线路230可附着至所述第一壳体2110的内壁。在另一实施方式中，所述柔性线路230可附着至所述第二壳体2120的内壁，由于柔性线路230不能被冲压、拉深，需要分布于所述第二壳体2120的非拉深区2122。
所述柔性线路230包括柔性线路层和绝缘层2304。所述柔性线路层附着至所述外壳210的内壁。在具体实施中，所述柔性线路层可包括线材部2301及所述连接部2302和所述输出端2303。
以所述柔性线路230与所述第一壳体2110形成一体结构为例，在具体实施中，所述电极组件230各位置的正/负极引出部2201也可靠近所述第一壳体2110的内表面设置，柔性线路层附着于第一壳体2110的内壁后，所述连接部2302可由第一壳体2110的内壁处弯折并延伸至所述电极组件230相应位置的正/负极引出部2201。所述绝缘层2304包覆于所述柔性线路层的外侧并露出所述连接部2302及输出端2303，如此，所述绝缘层2304即隔离所述柔性线路层靠近所述电极组件220的一侧，起到绝缘防护作用，同时可防止后期电池内的电解液腐蚀线路。
在一较优实施方式中，所述柔性线路层包括多个线材段，所述多个线材段根据所述预定串/并联关系及所述引出部2201和所述输出端2303的位置预定。所述连接部2302、所述输出端2303中的至少一者与其中一线材段一体预制成型。
作为示例，参图5至图10所示，在一具体实施例中，电池20包括五个电极组件220，具体记为第一电极组件2210、第二电极组件2220、第三电极组件2230、第四电极组件2240和第五电极组件2250。这些电极组件220都呈长方体型，每个电极组件都具有长度、宽度、高度三个尺寸，所述宽度和长度分别为所述电极组件在与所述高度方向垂直的两方向上的尺寸。如前所述，五个电极组件220中，至少两个电极组件220 的高度不同。在具体实施时，由于电子设备100内的功能器件30规格各异，通常情况下，五个电极组件220的高度均不相同，且所述五个电极组件220中，至少两电极组件220的宽度不同，和/或至少两电极组件220的长度不同。在本示例中，所述第一至第五电极组件的长度、宽度和高度均互不相同。实施时按具体需求设置即可。
第一电极组件2210、第二电极组件2220、第三电极组件2230、第四电极组件2240和第五电极组件2250按预定形式排布，相邻电极组件间设有间隔。各电极组件220的引出部2201需与所述柔性线路230连接的，相应朝向所述间隔处设置。如图3，第二电极组件2220的正极引出部和负极引出部设置于第二电极组件2220和第三电极组件2230之间的间隔中，第二电极组件2220的正极引出部和负极引出部设置于第二电极组件2220和第三电极组件2230之间的间隔中，第三电极组件2230的正极引出部和负极引出部设置于第三电极组件2230和第五电极组件2250之间的间隔中，第四电极组件2240和第五电极组件2250的正极引出部设置于第四电极组件2240和第五电极组件2250之间的间隔中，第五电极组件2250的负极引出部设置于第五电极组件2250和第一电极组件2210之间的间隔中，第一电极组件2210的正极引出部、负极引出部、第四电极组件2240的负极引出部朝向各自电极组件的外周侧设置。
相应的，为实现所述第一至第五电极组件之间预定的串并联关系，柔性线路230的线材部2301设置成多个线材段。例如，参图4所示，当需要实现第一电极组件2210与并联后的第二电极组件2220和第三电极组件2230串联，再与并联后的第四电极组件2240和第五电极组件2250串联时，所述线材部2301可设置成四段，即第一线材段2310、第二线材段2320、第三线材段2330和第四线材段2340。
参图7所示，第一线材段2310与第一电极组件2210的正极引出部连接，复用作电池20的正极输出端。
第二线材段2320的一端与所述第一电极组件2210的负极引出部连接，另一端分出两连接部2302，分别与第二电极组件2220和第三电极组件2230的正极引出部连接。
第三线材段2330的两端各自分出两连接部2302，一端的两个连接部2302分别与第二电极组件2220的负极引出部和第五电极组件2250的负极引出部连接，另一端的两个连接部2302分别与第四电极组件2240的正极引出部和第五电极组件2250的正极引出部连接。
第四线材段2340的一端分出两连接部2320，分别与第四电极组件2240的负极引 出部和第五电极组件2250的负极引出部连接，另一端复用作所述电池20的负极输出端。
如上的线材段设置和连接，即可实现第一电极组件2210、并联后的第二电极组件2220和第三电极组件2230、并联后的第四电极组件2240和第五电极组件2250的串联，同时实现电池20的正、负极输出。
所述绝缘层2304包覆所述多个线材段。例如，在一较优实施方式中，所述绝缘层2304由绝缘材料涂覆于所述线材段表面形成。在另一较优实施方式中，所述绝缘层2304还可为绝缘膜，所述绝缘膜层压贴合于所述柔性线路层2312外侧并与所述外壳210结合。在具体实施中，参图8至图10所示，所述外壳210可为铝塑膜，同时也可将柔性线路层及绝缘层2304提前设计至铝塑膜中，通过将铝塑膜原有的尼龙层2111、Al层2112及PP层2113中提前嵌入一层柔性线路层及耐腐蚀及绝缘作用的绝缘层2304，后续再通过正负极耳引脚引出正负极耳，实现极耳引出。
电极组件220即为极芯，包括正极片221、隔膜222和负极片223。例如，在一较优实施方式中，所述电极组件220包括多个层叠设置的正极片221、隔膜222及负极片223，所述正极片221设有正极耳2211，所述负极片223设有负极耳2231。
每个电极组件220的多个所述正极耳2211集中连接形成正极引出部，多个所述负极耳2231集中连接形成负极引出部。
所述连接部2302凸出于所述柔性线路230并延伸至与相应的正极引出部或负极引出部对接的位置，以便与相应的正极引出部或负极引出部形成电性连接。
前述电池20和采用该电池20的电子设备100中，所述电子设备100的功能器件30和电池20外形相互配合，电极组件220与相应的功能器件30在空间的占用上形成相互避让、互补的关系，从而实现收容空间的充分利用。同时，利用柔性线路230成型和布设方便的特点，使其一体形成在壳体210的内侧，能够简化电池20的电路设计，使得电池20的设计和布局更简单。如此，可提高电子设备100内部空间的利用率，便于实现电子设备100的轻薄化。
所述柔性线路230收容于所述外壳内，并根据所述多个电极组件220的预定串/并联关系及所述引出部2201的位置布设以电性连接所述多个电极组件，在电池20的外壳210内布线并实现电极组件220的电性连接，通过输出端延伸出所述外壳以实现电引出，可简化外部电路，减少外部线路和元器件对电子设备100内部空间的占用。
在一较优实施方式中，所述柔性线路还包括线材部2301和设置于所述线材部2301上的多个连接部2302。所述线材部2301根据所述多个电极组件220的预定串/并联关系及所述引出部2201的位置布设于所述电极组件220的周侧。所述多个连接部2302设置于所述线材部2301上并与相应位置的所述引出部2201电性连接。所述输出端2303设置于所述线材部2301上。
具体实施中，所述电极组件220可由正极片、隔膜和负极片卷绕制成，正极片、负极片上预留有极耳，所述引出部2201相应可包括卷绕后由正极耳集中焊接后形成的正极引出部和由负极耳集中焊接后形成的负极引出部。所述引出部2201可设置在所述电极组件220的侧面，且多个电极组件220的引出部2201可大致设置在同一平面上，以方便所述柔性线路230的布设。
所述线材部2301可包括根据所述预定串/并联关系及所述引出部的位置预定的多个线材段。由于所述多个电极组件220为满足空间占用的要求，尺寸规格存在差异，而为了满足输出电力的需求，需要根据预定的串联、并联关系进行连接。所述线材部2301预设为多个线材段，可更方便地根据电极组件220的排布完成预定的串/并联连接，尤其是串联连接。
为便于加工成型，同时简化连接步骤，所述连接部2302、所述输出端2303中的至少一者可与其中一线材段一体预制成型。在具体实施中，所述连接部2302可均与相应的线材段一体成型，且连接部2302位于相应线材段的端部。所述输出端2303包括正极输出端和负极输出端，其中一者与一线材段一体成型，另一者可由一线材段构成。所述线材部的外侧包覆有绝缘膜240，以实现电气绝缘防护。所述连接部2302和所述输出端2303的部分露出，便于实现电性连接。
在设定所述多个电极组件220的排布时，相邻电极组件220之间可设置间隔。各电极组件220的引出部2201需与所述柔性线路230连接的，相应朝向所述间隔处设置。所述线材部2301位于相邻电极组件220间的部分嵌设于相应的间隔内。如此设置，既方便柔性线路230与电极组件220的引出部2201之间的电性连接，由于电极组件220的引出部2201本来就需要占据部分空间，将柔性线路230的线材部2301嵌设在原本就需要预留的间隔内，相当于复用了该部分空间，提高了空间利用率，同时也便于布线。
在具体实施中，所述外壳210可包括第一壳体2110和第二壳体2120。
第一壳体2110大致位于同一平面内，即，所述第一壳体2110大致为一张平整的膜，形成所述外壳210平整的一面。此处的“大致”在具体实施中可为加工精度影响带来的公差、误差，或因局部设计需求影响引入的局部异形等，第一壳体2110大体平整即可。
第二壳体2120的预定位置向远离所述第一壳体2110的方向凹陷以形成所述多个收容槽2121。每个收容槽2121的形状与相应的电极组件220匹配。
所述第一壳体2110和所述第二壳体2120的周侧分别设有封边部，所述第一壳体2110和所述第二壳体2120的周侧通过所述封边部密封连接，从而将所述电极组件220和所述柔性线路230封装于所述壳体210内。所述输出端2303的外侧包覆有密封胶层(图中未示出)。所述输出端2303由两封边部之间延伸出所述外壳210，且所述输出端2303通过所述密封胶层与所述封边部的相应位置密封连接，实现所述电池20的电引出。
所述电极组件220的引出部2201和所述柔性线路230可靠近所述第一壳体2110设置。利用平整的第一壳体2110，可形成整齐的布线，也可尽量避免后期应力变形。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。

Claims (10)

  1. 一种电池，应用于电子设备，所述电子设备包括形成有收容空间的壳体及多个功能器件，所述多个功能器件收容于所述壳体内并占据所述壳体的部分收容空间，其特征在于，所述电池包括：
    多个电极组件，分别设置成预定尺寸规格并按预定位置排布，以大致占据所述收容空间的剩余空间；所述电极组件的预定位置设有引出部；
    外壳，预定位置向外侧凸出并相应在内部形成多个收容槽，所述多个收容槽与所述多个电极组件的外形尺寸匹配以对应收容所述多个电极组件；及
    柔性线路，与所述外壳形成一体结构，并根据所述多个电极组件的预定串/并联关系及所述引出部的位置布设，所述柔性线路包括输出端及多个连接部，所述多个连接部用于与相应的所述引出部连接以电性连接所述多个电极组件；所述输出端延伸出所述外壳以实现电引出。
  2. 如权利要求1所述的电池，其特征在于，所述柔性线路还包括线材部，所述线材部一体形成于所述外壳的内侧；
    所述多个连接部及所述输出端设置于所述线材部上，所述连接部凸出于所述壳体内侧并延伸至相应的所述引出部。
  3. 如权利要求1或2所述的电池，其特征在于，所述外壳包括：
    第一壳体，大致位于同一平面内；及
    第二壳体，与所述第一壳体相对设置并与所述第一壳体共同限定出所述收容空间，所述第二壳体的预定位置向远离所述第一壳体的方向凹陷以形成所述多个收容槽；
    所述柔性线路附着至所述第一壳体的内壁。
  4. 如权利要求1-3中任一项所述的电池，其特征在于，所述外壳包括：
    第一壳体，大致位于同一平面内；及
    第二壳体，与所述第一壳体相对设置并与所述第一壳体共同限定出所述收容空间，所述第二壳体的预定位置向远离所述第一壳体的方向凹陷以形成所述多个收容槽；
    所述柔性线路附着至所述第二壳体的内壁并分布于所述第二壳体的非拉伸区域。
  5. 如权利要求1-4中任一项所述的电池，其特征在于，所述柔性线路包括：
    柔性线路层，附着至所述外壳的内壁并包括所述线材部及所述连接部和所述输出 端；及
    绝缘层，包覆于所述柔性线路层的外侧并露出所述连接部及所述输出端。
  6. 如权利要求5所述的电池，其特征在于：所述柔性线路层包括多个线材段，所述多个线材段根据所述预定串/并联关系及所述引出部和所述输出端的位置预定；
    所述连接部、所述输出端中的至少一者与其中一线材段一体预制成型；
    所述绝缘层包覆所述多个线材段。
  7. 如权利要求6所述的电池，其特征在于：所述绝缘层由绝缘材料涂覆于所述线材段表面形成。
  8. 如权利要求7所述的电池，其特征在于：所述电极组件包括多个层叠设置的正极片、隔膜及负极片，所述正极片设有正极耳，所述负极片设有负极耳；
    每个电极组件的多个所述正极耳集中连接形成正极引出部，多个所述负极耳集中连接形成负极引出部；
    所述连接部凸出于所述线材段并延伸至与相应的正极引出部或负极引出部对接的位置。
  9. 如权利要求6-8中任一项所述的电池，其特征在于：所述绝缘层为绝缘膜，所述绝缘膜层压贴合于所述柔性线路层外侧并与所述外壳结合。
  10. 一种电子设备，包括：
    壳体，形成有收容空间；
    多个功能器件，所述功能器件安装于所述壳体内并占据一部分所述收容空间；
    其特征在于，所述电子设备还包括如权利要求1-9中任一项所述的电池；
    所述电池大致占据所述收容空间的剩余空间。
PCT/CN2022/074404 2021-03-30 2022-01-27 电池及采用该电池的电子设备 WO2022206162A1 (zh)

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