CN111244526A - Flexible battery and electronic equipment - Google Patents
Flexible battery and electronic equipment Download PDFInfo
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- CN111244526A CN111244526A CN202010131476.4A CN202010131476A CN111244526A CN 111244526 A CN111244526 A CN 111244526A CN 202010131476 A CN202010131476 A CN 202010131476A CN 111244526 A CN111244526 A CN 111244526A
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- 230000009975 flexible effect Effects 0.000 title claims abstract description 196
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 44
- 238000005538 encapsulation Methods 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 description 10
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- 229910052782 aluminium Inorganic materials 0.000 description 5
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
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- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present disclosure provides a flexible battery and an electronic device. The flexible battery comprises a flexible electric core group and an encapsulation part. The flexible battery core comprises a plurality of battery cores, and bending gaps are formed among the battery cores; the packaging piece is wrapped on the outer side of the flexible electric core group so as to package the flexible electric core group; the packaging part is provided with a side packaging part, the side packaging part is used for being attached to the side face of the flexible electric core group, a yielding notch is formed in the side packaging part and corresponds to the two adjacent sides of the flexible electric core group, and the bending gap between the electric cores is arranged. The technical scheme of the disclosure can reduce the influence of the packaging part of the flexible battery on the flexibility of the flexible battery core.
Description
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a flexible battery and an electronic device.
Background
Mobile electronic devices are now becoming more popular and users demand electronic devices more and more. Electronic equipment, including VR, AR, intelligent earphone, intelligent bracelet, wear cell-phone etc. these electronic equipment can be correspondingly worn on the human body through head hoop, wrist strap etc. carry out better interaction with between the user.
In order to improve the cruising ability of electronic equipment, many manufacturers propose a scheme of supplying power by using a flexible battery. The flexible battery can fully utilize the space in the electronic equipment due to the variable shape of the flexible battery so as to increase the number of battery units.
However, when the battery cell in the flexible battery is packaged, if the packaging manner of the conventional lithium ion soft package battery is applied, a part of the empty aluminum-plastic film is left after the two sides of the battery cell are sealed. The traditional soft package battery usually compresses and pastes the empty plastic-aluminum that comes out more and the side of electricity core to reduce the volume of battery. However, if the packaging method is applied to the flexible battery, the extra empty aluminum plastic blocks the bending gap between the flexible battery units after being tightly pressed and attached to the side edge of the battery core, so that the flexibility of the flexible battery is greatly influenced.
The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
One object of the present disclosure is a flexible battery whose packaging reduces the impact on the flexibility of the flexible cell.
In order to solve the technical problem, the following technical scheme is adopted in the disclosure:
according to one aspect of the present disclosure, there is provided a flexible battery including:
the flexible battery core group comprises a plurality of battery cores, and bending gaps are formed among the battery cores;
the packaging piece is wrapped on the outer side of the flexible electric core group so as to package the flexible electric core group; the packaging part is provided with a side packaging part, the side packaging part is used for being attached to the side face of the flexible electric core group, a yielding notch is formed in the side packaging part and corresponds to the two adjacent sides of the flexible electric core group, and the bending gap between the electric cores is arranged.
According to one aspect of the present disclosure, the present disclosure provides an electronic device, including a body, a unit to be powered, and the flexible battery; the flexible battery is arranged in the body;
the flexible battery is used for supplying power to the unit to be powered.
This is disclosed through having seted up the breach of stepping down on the side encapsulation portion of packaging part, and the breach of stepping down corresponds to the flexible electric core group side on the clearance setting of buckling between the double-phase adjacent electric core. Therefore when flexible electric core group takes place to buckle along the clearance of buckling, owing to the existence of the breach of stepping down, side encapsulation portion can be through the breach of stepping down release stress, the effectual stress that gathers because of flexible electric core group buckles that has reduced in the side encapsulation portion, and the side encapsulation portion that has less stress has reduced the flexible influence to flexible electric core group to when flexible electric core group buckles, reduced the hindrance of buckling to flexible electric core group. Therefore, the flexible battery packaging part reduces the influence of the packaging part of the flexible battery on the flexibility of the flexible electric core group on the premise of reducing the occupied space volume of the flexible battery.
Moreover, if the flexible electric core assembly is packaged by adopting the existing scheme, after the flexible battery is used for a long time, the packaging part easily causes strain of a bending part along with the bending of the flexible electric core assembly, the packaging performance of the packaging part is influenced, and the service life of the packaging part is shortened. Therefore, according to the technical scheme, the structure of the packaging part is improved, so that the packaging part can effectively package the flexible electric core group, the vicious influence on the packaging part when the flexible electric core group is bent is avoided, and the service life of the packaging part is ensured.
In conclusion, according to the technical scheme, the influence of the packaging part of the flexible battery on the flexibility of the flexible electric core group is reduced on the premise that the space occupied by the flexible battery is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic diagram illustrating a top view of a flexible battery without an enclosure enclosing a set of flexible electrical cores, according to an embodiment;
FIG. 2 is a schematic structural diagram illustrating one embodiment of a flexible electric core assembly according to one embodiment;
fig. 3 is a schematic structural diagram illustrating one embodiment of a flexible electric core assembly according to another embodiment;
fig. 4 is a schematic structural diagram of the flexible battery core pack before the bare cell element strip is unwound according to another embodiment;
fig. 5 is a schematic structural view of a flexible cell assembly formed after winding of the bare cell unit strip corresponding to fig. 4;
FIG. 6 illustrates a side view of a flexible battery according to an embodiment;
fig. 7 is a top view of the structure corresponding to fig. 6, before the package is wrapped around the flexible electric core assembly;
fig. 8 shows a side view of a flexible battery according to another embodiment;
fig. 9 is a top view of the structure corresponding to fig. 8, before the package is wrapped around the flexible electric core assembly;
fig. 10 illustrates a side view of a flexible battery according to another embodiment;
fig. 11 is a top view of the structure corresponding to fig. 10, before the packaging member is wrapped around the flexible electric core assembly.
The reference numerals are explained below:
10. the flexible electric core group; 11. the side surface of the flexible electric core group; 101. an electric core; 102. a bending gap; 13. a connecting body; 12. a flexible circuit board;
20. a package; 21. side encapsulation 22, abdication gap
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and the like. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.
Preferred embodiments of the present disclosure are described in further detail below with reference to the accompanying drawings of the present specification.
The utility model provides a flexible battery, this flexible battery can be applied to among the electronic equipment, and the electronic equipment can be cell-phone, panel computer, the electronic book reads ware, intelligent wearing equipment, portable power source (if charge precious, travel charge), electron cigarette, wireless mouse, wireless keyboard, wireless earphone, bluetooth speaker etc. have the chargeable electronic equipment of function of charging.
An embodiment of the flexible battery will be explained in the following embodiments.
Referring to fig. 1, fig. 1 is a schematic top view of a flexible battery with a package 20 not wrapping a flexible electric core assembly 10 according to an embodiment. In one embodiment, the flexible battery comprises a flexible battery core pack 10 and a packaging member 20. The flexible electric core group 10 comprises a plurality of electric cores 101, wherein bending gaps 102 are formed among the electric cores 101; the packaging part 20 is wrapped on the outer side of the flexible electric core group 10 to package the flexible electric core group 10; the packaging part 20 is provided with a side packaging part 21, the side packaging part 21 is used for being attached to the side 11 of the flexible electric core group, an abdicating notch 22 (not shown) is formed in the side packaging part 21, and the abdicating notch 22 is arranged corresponding to the bending gap 102 between two adjacent electric cores 101 on the side of the flexible electric core group 10.
The battery cell 101 may be a lithium battery cell 101, or may be a lead storage battery cell 101. The battery cell 101 may be a secondary battery cell 101 that can be charged, or may be a primary battery cell 101 that cannot be charged. And is not limited herein. In this embodiment, when the flexible battery is applied to an intelligent terminal, the battery cell 101 is a secondary lithium battery cell 101.
In an embodiment, the plurality of battery cells 101 may have different sizes, shapes and performance parameters, so that the battery cells 101 with different shapes and sizes can be selected to be constructed according to the positions of the bending gaps 102 to be formed. And the battery cells 101 with different performance parameters can be selected to match with the total voltage to be output and the total current of the battery cells 101. Wherein the performance parameters comprise internal resistance, capacity, voltage range and the like of the battery. In this embodiment, the size, shape and performance parameters of the plurality of battery cells 101 are the same, or the difference is not large, so as to improve the convenience of the design of the connection circuit between the plurality of battery cells 101, facilitate the setting of the protection circuit, and improve the balance and stability of the overall performance of the battery cell 101 assembly 1.
The cells 101 have bending gaps 102 therebetween. The adjacent two battery cells 101 may have flexibility. It is also possible that some adjacent battery cells 101 are next to each other without the bending gap 102, and the flexibility of the flexible battery core pack 10 is represented by the bending gap 102 between other adjacent battery cells 101.
There are at least two specific embodiments of the flexible electric core pack 10. Referring to fig. 2, fig. 2 shows a schematic structural diagram of an embodiment of the flexible electric core assembly 10. In this embodiment, the flexible battery pack 10 includes a flexible circuit board 12 and a connection line, the battery cells 101 are disposed on the surface of the flexible circuit board 12, and the flexible circuit board 12 can be bent along the bending gap 102; the connecting circuit is arranged on the flexible circuit board 12 to electrically connect the plurality of battery cells 101; the flexible circuit board 12 can be bent along the bending gap 102.
In an embodiment, the flexible circuit board 12 has two surfaces, and all the battery cells 101 may be disposed on the two surfaces, so that the battery cells 101 arranged on each surface of the flexible circuit board 12 may be sparse, and thus the bendable angle of the flexible circuit board 12 may be increased. In this embodiment, all the battery cells 101 are disposed on the same surface of the flexible circuit board, so that the battery cell 101 assembly has a thinner thickness as a whole and can be better installed in the terminal.
In fig. 2, the plurality of battery cells 101 are sequentially arranged in a row, and may be arranged in a straight line. The side 11 of the flexible electric core group is composed of the side of the row of electric cores 101 on the same side. The flexible electric core group has two sides 11.
Referring to fig. 3, fig. 3 is a schematic structural diagram of another embodiment of the flexible electric core assembly 10. In this case, a plurality of battery cells 101 are arranged in an array; the side surfaces 11 of the flexible cell group are composed of side surfaces which are positioned on the same side of the cell 101 of the edge row, and the number of the side surfaces is four.
The structure of the battery cell 101 may be roughly divided into a battery cell 101 body and tabs disposed on the side of the battery cell 101 body, and the battery cell 101 body may be bonded to the surface of the flexible circuit board 12. The tabs may be attached to the surface of the flexible circuit board 12 by laser welding or ultrasonic welding.
In this embodiment, the battery cell 101 includes a plurality of pole piece layers, and the tab can be led out from any one of the pole piece layers. The pole piece layer can be arranged in a structure of being stacked in sequence and can also be arranged in a roll shape. The tab may be bent to extend and attach to the surface of the flexible circuit board 12. In this embodiment, tabs are provided for attachment to the pole piece layer adjacent the flexible circuit board 12. Therefore, the tab extending from the battery core 101 can be attached to the surface of the flexible circuit board 12 almost without bending, so that the tab can be better ensured to be connected with the flexible circuit board 12.
It will be appreciated that the more the flex gaps 102, the better the flexibility of the flexible circuit board 12 to deform. In this embodiment, a bending gap 102 is disposed between two adjacent battery cells 101. Of course, a plurality of battery cells 101 may be divided into a plurality of groups, and the battery cells 101 in the groups have bending gaps 102; and a plurality of battery cells 101 in each group of battery cells 101 may be closely arranged to reduce the number of connections.
In this embodiment, the connection lines are laid on the flexible circuit board 12 to electrically connect the plurality of battery cells 101, so that the battery cells 101 on the flexible circuit board 12 are all connected in series or all connected in parallel, and of course, the plurality of battery cells 101 may be formed with a series battery cell 101 unit and a parallel battery cell 101 unit to form a series-parallel combined circuit structure.
Therefore, in this embodiment, the battery cells 101 are directly disposed on the flexible circuit board 12, so that the flexible circuit board 12 holds the plurality of battery cells 101, and thus, a battery cell 101 assembly formed by the plurality of battery cells 101 and the flexible circuit board 12 has flexibility, and is applied to a terminal with a changeable shape.
Referring to fig. 4 and 5, fig. 4 is a schematic structural view of another embodiment of the flexible electric core assembly 10 during unfolding. In another embodiment, flexible electric core group 10 includes connecting body 13 and naked electric core 101 unit strip, and connecting body 13 distributes along its self extending direction has linkage segment and a section of can buckling, and naked electric core 101 unit strip is connected in one side of linkage segment, and uses the linkage segment to wind on the linkage segment as the axle ring in order to form electric core 101. Referring to fig. 5, fig. 5 shows a schematic structural view of the flexible electric core assembly 10 formed after the unit strip of the bare electric cores 101 in fig. 4 is wound.
Naked electric core 101 unit strip is including positive plate, barrier film, the negative pole piece that stacks gradually. The isolating film is clamped between the positive plate and the negative plate. Positive plate, barrier film, negative pole piece can be as a set of, and naked electric core 101 unit strip can include positive plate, barrier film, the negative pole piece of multiunit.
Here, the positive electrode sheet may be an aluminum foil coated with a positive electrode active material on the surface. The negative electrode sheet may be a copper foil coated with a negative electrode active material on the surface.
It can be understood that the unit strips of the bare cell 101 are in a sheet shape, and the shape of the unit strips can be rectangular, square, circular, oval and the like; or may be irregular.
The connecting body 13 is divided into a connecting section and a bendable section. In one embodiment, the connecting body 13 is a strip shape, and the connecting section and the bendable section are arranged along the extending direction of the connecting body 13. In one example, the connecting sections and the bendable sections are alternately arranged, and the bendable sections are located between two adjacent connecting sections. It will be appreciated that the connecting sections and the bendable sections may be distributed differently depending on the shape of the connecting body 13.
The bendable sections enable flexibility of the flexible electrical core assembly 10 of the present disclosure. Namely, the flexible electric core group 10 can be bent from the bendable section, thereby realizing the flexible effect. The connecting section and the bendable section can be made of the same material or different materials. For example, the bendable section may be made of a soft material, thereby facilitating bending. In one embodiment, the bendable sections and the connecting sections are made of the same material, so that the current can be better conducted on the connecting body 13. Due to the fact that the bending section is not wrapped by the naked cell 101 unit strips, better bending performance can be achieved.
The linkage segment is used for being connected with naked electric core 101 unit strip. In an example, the linkage segment is connected with the one end of naked electric core 101 unit strip, and then the other end of naked electric core 101 unit strip uses the linkage segment to encircle as the axle to the parcel linkage segment. In this example, the width of the connection segment is substantially the same as the width of the bare cell 101 unit bar.
The connection section and the bare cell 101 unit strip can be two parts, and then are connected through a connection means. For example by soldering, conductive glue bonding, etc.
In an embodiment, the linkage segment is integrated into one piece with naked electric core 101 unit strip to guarantee the stability of electric current conduction between naked electric core 101 unit strip and the linkage segment, and improve the structural stability of naked electric core 101. In an example, cut through directly on a whole naked electric core 101 to form connecting body 13 and naked electric core 101 unit strip. Referring to fig. 4, the cutting can be performed according to the shape shown in fig. 4. The cut bare cell 101 unit strip may be wound around the corresponding connection section.
The number of the unit bars of the bare cell 101 is not specifically limited, and may be two or more. The number of connecting segments on the corresponding connecting body 13 is also not limited. Every naked electric core 101 unit strip is corresponding to be connected on a linkage segment, has the interval on the length direction of connecting main body 13 along two adjacent naked electric core 101 unit strips. Optionally, the width of the gap corresponds to the width of the bendable section. In one example, the spacing may be selected to be 10mm-50 mm.
In an embodiment, the bare cell 101 unit bars are located on the same side of the connection main body 13. And thus the connecting body 13 is correspondingly located on one side of the connecting body 13. In the cutting process, the middle of a whole square naked battery cell 101 can be cut, so that two naked battery cells 101 in the present disclosure are formed, and the waste of materials is effectively avoided. Of course, a plurality of bare cell 101 unit bars may also be located on opposite sides of the connection body 13.
Compared with the prior art, in the scheme that a plurality of battery units are connected in series and parallel to form the flexible battery, the space utilization rate among batteries is increased by connecting the plurality of battery units, so that the overall energy density of the battery is reduced. This embodiment is through making connecting subject 13 and naked electric core 101 unit strip integrated into one piece to make naked electric core 101 unit strip around establishing the electric core 101 unit that forms behind the linkage segment also based on connecting subject 13 and form the relation of connection, thereby need not further to connect between each electric core 101 unit, the effectual space utilization who improves in electric core 101, and be convenient for generate processing.
In addition, in the related art, the difficulty of battery management is increased when a plurality of battery power supplies are connected in series and parallel, and the more the number of battery cells is, the more complicated the management of the battery becomes, for example, the balance management among the batteries is performed, and when the states of the batteries are inconsistent, the states of the batteries need to be maintained as much as possible through external balance, however, the increase of a balance circuit also increases the production cost, and the battery cells 101 are screened before installation. In this embodiment, because naked electric core 101 unit strip forms as an organic whole through connecting main part 13, can carry out the self-balancing through connecting main part 13 between the electric core 101 unit that each naked electric core 101 unit strip formed, the effectual degree of difficulty and the complexity of managing between electric core 101 unit that has reduced from this.
Please continue to refer to fig. 1. The flexible electric core group 10 is sealed by the packaging part 20 to form a flexible battery. In one embodiment, the package 20 is an aluminum-plastic film. The specific structure of the aluminum plastic film can be a composite material consisting of an outer nylon layer (ON layer), an intermediate aluminum foil layer (AL layer) and an inner heat sealing layer (CPP or PP), and the layers are pressed and bonded through an adhesive. Of course, other packages 20 having high barrier properties, good heat sealing properties, and resistance to corrosion by electrolytes and strong acids may also be used.
The flexible electrical core assembly 10 as a whole has a bottom surface, a top surface, and side surfaces. Since the flexible electric core group 10 includes a plurality of electric cores 101, the plurality of electric cores 101 are substantially arranged on the same plane; the bottom surface of the flexible electric core group 10 refers to the bottom surfaces of the plurality of electric cores 101 contained therein; the top surface of the flexible electric core group 10 refers to the top surface of the plurality of electric cores 101 contained therein; the side 11 of the flexible electric core group refers to the side of the electric core 101 at the edge facing the whole flexible electric core group 10. The position of the side surface 11 of the flexible electric core group is marked in both fig. 2 and fig. 3.
The package 20 is sheet-shaped, the package 20 has a surface-sealing portion, and the surface-sealing portion is adjacent to the side-sealing portion 21; the surface packaging part is used for being attached to the upper surface and the lower surface of the flexible electric core group 10. Illustratively, in the packaging process, the flexible electric core assembly 10 is first placed on the packaging member 20, and the packaging member 20 integrally wraps the flexible electric core assembly 10 upwards until the top surface of the flexible electric core assembly 10 is completely covered. It can be seen that there are two surface sealing parts 20, which are respectively attached to the top and bottom surfaces of the flexible electric core assembly 10, and the side sealing part 21 is attached to the side surface 11 of the flexible electric core assembly. It is to be explained here that the top and bottom surfaces of the flexible electrical core pack 10 are as described with reference to the orientation of fig. 1. When the flexible electric core assembly 10 is applied to different electronic devices, the orientation of the flexible electric core assembly relative to the bottom surface may be changed.
Referring to fig. 6 and 7, fig. 6 illustrates a side view of a flexible battery according to one embodiment. The side view shows the shape of the side sealing part 21, and fig. 7 is a top view of the sealing part 20 corresponding to fig. 6 when the flexible electric core group 10 is not wrapped. When the flexible electric core assembly 10 is bent along the bending gap 102, the parts of the side sealing parts 21 corresponding to the sides of the bending gap 102 move relatively to each other to generate extrusion, and the extruded side sealing parts 21 generate stress to block the flexible electric core assembly 10 from further bending. Therefore, in an embodiment, the side surface encapsulating portion 21 is provided with a relief notch 22, and the relief notch 22 is disposed corresponding to the bending gap 102 between two adjacent electric cores 101 on the side surface of the flexible electric core assembly 10. Therefore, when the flexible electric core assembly 10 is bent along the bending gap 102, due to the existence of the abdicating notch 22, the side encapsulating part 21 releases stress through the abdicating notch 22, and the stress gathered in the side encapsulating part 21 due to bending of the flexible electric core assembly is effectively reduced. The present disclosure therefore reduces the influence of the package 20 of the flexible battery on the flexibility of the flexible electric core assembly 10 while reducing the occupied space of the flexible battery.
The flexible electric core group 10 can be bent upwards or downwards. Referring to fig. 8 and 9, fig. 8 illustrates a side view of a flexible battery according to one embodiment. The side view shows the shape of the side encapsulation part 21, and fig. 9 is a top view of the encapsulation 20 corresponding to fig. 8 when the flexible electric core group 10 is not wrapped. In this embodiment, the relief notch 22 is square in shape. Referring to fig. 10 and 11, in one embodiment, the relief notch 22 is tapered from one of the top and bottom surfaces toward the other of the top and bottom surfaces. Optionally, when the battery cell 101 is disposed on the flexible circuit board 12, the abdicating notch 22 is disposed gradually in a wide manner from the bottom surface toward the top surface.
Specifically, the abdicating notch 22 is arranged in an approximately triangular shape. For example, the arrangement may be triangular or arched. The abdicating notch 22 can also be arranged in a trapezoid shape.
Further, to further reduce the influence of the packaging member 20 of the flexible battery on the flexibility of the flexible electric core assembly 10. In this embodiment, the yielding notches 22 corresponding to the bending gaps 102 and the bending gaps 102 are provided; a yielding gap 22 corresponding to the bending gap 102 and corresponding to the bending gap 102; the abdicating notch 22 is symmetrically arranged along the left and right direction, and the symmetry line of the abdicating notch 22 corresponds to the middle position of the bending gap 102. In this way, the flexible electric core assembly 10 can have the maximum unobstructed bending angle when bending along the bending gap 102, and the abdicating notch 22 can have the maximum unobstructed bending angle. Thereby ensuring reliability in reducing the influence of the package member 20 of the flexible battery on the flexibility of the flexible electric core pack 10.
The distance between the two battery cells 101 is defined as the length of the bending gap 102; the maximum transverse dimension of the abdicating notch 22 is greater than or equal to the length of the bending gap 102 corresponding to the abdicating notch 22, that is, greater than or equal to the distance between two battery cells 101 corresponding to the abdicating notch 22. The larger the transverse dimension, the larger the bending angle allowed by the packaging member 20, so as to reduce the influence on the flexibility of the flexible electric core assembly 10.
In order to ensure the reliability of the package, in this embodiment, the shortest distance between the edge of the abdicating notch 22 and the battery cell 101 is set to be greater than or equal to a preset safety distance. The preset safety distance may be set according to the size of the battery cells 101 and the distance between two adjacent battery cells 101. Therefore, the working safety of the flexible battery can be improved.
It is mentioned in the above embodiments that the flexible battery can be used in an electronic device. In the following embodiments, the flexible battery is used in some typical electronic devices for example.
In one embodiment, an electronic device includes a body and a flexible battery; the battery core 101 containing position is arranged in the body, and the shape of the flexible battery is matched with that of the battery core 101 containing position. In one example, the body includes a non-bendable portion and a bendable portion. The non-bendable portion is, for example, a hard display screen portion, and the bendable portion is, for example, a wearing portion such as a head band. The flexible battery can be arranged at a non-bendable part and a bendable part because of the variable shape and better bending property.
Of course, in some embodiments, the electronic device includes only a bendable portion, such as a cell phone with a flexible screen. At the moment, the flexible battery can be arranged in the mobile phone, and when the mobile phone is bent, the flexible battery can be bent along with the mobile phone.
In this embodiment, the body includes a wearing portion, which is curved or bendable; the battery cell 101 accommodating position is located in the wearing portion, and the extending direction of the battery cell 101 accommodating position corresponds to the shape of the wearing portion.
When the electronic device is a head-mounted electronic device, the wearing portion is a head band of the electronic device. The head-mounted electronic device may be a VR, AR, headphone, or the like.
In another example, when the electronic device is an electronic device having a wrist band, the wearing portion is the wrist band; the electronic device with the wristband may be a smart watch, a smart bracelet, or the like.
In another example, when the electronic device is a smart belt, the wearing portion is a waist portion of the smart belt. This intelligence waistband can be according to the size change of wearer's waistline and automatically regulated degree of enclosing to guarantee to wear the travelling comfort.
In the embodiment, the flexible battery in the above embodiment is used in the electronic device to supply power to the electronic device, and the flexible battery is flexible and can be arranged at a bent part of the electronic device, so that the flexibility of the arrangement position of the flexible battery is improved;
in addition, the flexible batteries can be arranged at the bending parts and the non-bending parts of the electronic equipment, so that the size of the flexible batteries can be increased, the number of the battery cores 101 of the flexible batteries can be increased, the power supply capacity of the flexible batteries can be improved, and the cruising capacity of the electronic equipment can be improved.
Therefore, the electronic equipment of the embodiment has better flexibility of flexible battery position setting and better cruising ability.
While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. A flexible battery, comprising:
the flexible battery core group comprises a plurality of battery cores, and bending gaps are formed among the battery cores;
the packaging piece is wrapped on the outer side of the flexible electric core group so as to package the flexible electric core group; the packaging part is provided with a side packaging part, the side packaging part is used for being attached to the side face of the flexible electric core group, a yielding notch is formed in the side packaging part and corresponds to two adjacent sides of the side face of the flexible electric core group, and the bending gap between the electric cores is arranged.
2. The flexible battery of claim 1, wherein the flexible battery core pack has a top surface and a bottom surface, and the relief notch tapers from one of the top surface and the bottom surface toward the other of the top surface and the bottom surface.
3. The flexible battery of claim 2, wherein a relief notch corresponding to the bend gap and corresponding to the bend gap; the abdication breach is the symmetry setting along left right direction, the symmetry line of abdication breach corresponds to buckle the positive middle position department in clearance.
4. The flexible battery of claim 3, wherein the distance between two of the cells is the length of the bending gap;
the maximum transverse dimension of the abdicating notch is greater than or equal to the length of the bending gap corresponding to the abdicating notch.
5. The flexible battery of claim 3, wherein the abdicating notch is arranged in a pseudo-triangular shape.
6. The flexible battery of claim 1, wherein a shortest distance between an edge of the abdicating notch and the battery cell is greater than or equal to a preset safety distance.
7. The flexible battery of claim 1, wherein the plurality of cells are arranged in a row; the side surface of the flexible battery cell group consists of the side surfaces of the battery cells in the row which are positioned at the same side; or
The plurality of battery cells are arranged in an array; the side surface of the flexible battery cell group is composed of the side surfaces of the battery cells positioned on the same side and positioned on the edge row.
8. The flexible battery of any one of claims 1 to 7, wherein the flexible battery core set comprises a connecting body and the bare cell unit strip, the connecting body is distributed with a connecting section and a bendable section along the extending direction of the connecting body, the bare cell unit strip is connected to one side of the connecting section, and is wound on the connecting section by taking the connecting section as a shaft to form the battery core.
9. The flexible battery according to any one of claims 1 to 7, wherein the flexible battery core set comprises a flexible circuit board and a connection line, the battery cells are all disposed on the surface of the flexible circuit board, and the flexible circuit board can be bent along the bending gap;
the connecting circuit is arranged on the flexible circuit board to be electrically connected with the battery core.
10. An electronic device, characterized by comprising a body, a unit to be powered, and the flexible battery according to any one of claims 1 to 9; the flexible battery is arranged in the body;
the flexible battery is used for supplying power to the unit to be powered.
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| CN202010131476.4A CN111244526A (en) | 2020-02-28 | 2020-02-28 | Flexible battery and electronic equipment |
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| CN202010131476.4A CN111244526A (en) | 2020-02-28 | 2020-02-28 | Flexible battery and electronic equipment |
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Application publication date: 20200605 |