CN111969151A - Battery and electronic device - Google Patents

Battery and electronic device Download PDF

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Publication number
CN111969151A
CN111969151A CN202010898612.2A CN202010898612A CN111969151A CN 111969151 A CN111969151 A CN 111969151A CN 202010898612 A CN202010898612 A CN 202010898612A CN 111969151 A CN111969151 A CN 111969151A
Authority
CN
China
Prior art keywords
battery
limiting
electronic device
limiting hole
rubber frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010898612.2A
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Chinese (zh)
Inventor
姜京文
李春利
李超鹏
甘家文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Nvt Technology Co Ltd
Original Assignee
Dongguan Nvt Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Nvt Technology Co Ltd filed Critical Dongguan Nvt Technology Co Ltd
Priority to CN202010898612.2A priority Critical patent/CN111969151A/en
Publication of CN111969151A publication Critical patent/CN111969151A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0262—Details of the structure or mounting of specific components for a battery compartment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

A battery is applied to an electronic device. The battery comprises a battery cell and a protection board positioned at the top end of the battery cell, wherein the protection board is electrically connected with the battery cell. The battery also comprises a rubber frame, the rubber frame covers the protection plate, and the rubber frame is provided with a first limiting hole matched with a limiting column in the electronic device. Be equipped with the injection molding through low pressure injection moulding in the clearance of gluing frame and electric core top, be equipped with the spacing hole of second that corresponds with first spacing hole on the injection molding. This application can carry on spacingly to the battery, reduces the battery and the risk of electron device disconnection when receiving machinery to abuse.

Description

Battery and electronic device
Technical Field
The present disclosure relates to battery technologies, and particularly to a battery and an electronic device having the same.
Background
With the development of battery (e.g., lithium ion battery) technology, batteries are widely used in electronic devices such as electronic mobile devices, electric tools, and electric vehicles. When the battery is in use and is subjected to mechanical abuse (such as collision, falling and the like), the battery is easy to move in a battery compartment of the electronic device, so that the battery is in poor contact with a contact arranged in the battery compartment, even the electronic device is powered off, and the normal use of the electronic device is affected.
Disclosure of Invention
In order to overcome the above disadvantages of the prior art, it is necessary to provide a battery and an electronic device that are beneficial to reducing power failure of the electronic device when the electronic device is subject to mechanical abuse.
The application provides a battery applied to an electronic device. The battery comprises a battery cell and a protection board positioned at the top end of the battery cell, wherein the protection board is electrically connected with the battery cell. The battery also comprises a rubber frame, the rubber frame covers the protection plate, and the rubber frame is provided with a first limiting hole matched with a limiting column in the electronic device. Be equipped with the injection molding through low pressure injection moulding in the clearance of gluing frame and electric core top, be equipped with the spacing hole of second that corresponds with first spacing hole on the injection molding.
This application is because first spacing hole and the spacing hole of second can cooperate with the spacing post in the electronic device to spacing to the battery, when the battery receives mechanical abuse, can reduce the removal of battery in the electronic device, be favorable to making battery and other components of electronic device keep stable electrical contact, reduce the risk that electronic device cut off the power supply because the battery shifts. The arrangement of the second limiting hole can increase the matching depth of the limiting column and the limiting hole, so that the battery is more stably fixed in the electronic device.
In some embodiments of the present application, the battery further includes a head tape, and the head tape covers the adhesive frame and the cell top end. The head adhesive tape is provided with a third limiting hole corresponding to the first limiting hole. The head adhesive tape can reduce the risk that the adhesive frame is separated from the battery core.
In some embodiments of the present application, the battery further includes a first insulating tape covering the cell top end and located between the cell top end and the protection plate.
In some embodiments of the present application, the battery further includes a second insulating adhesive tape, and the second insulating adhesive tape covers the side surface of the battery cell.
In some embodiments of the present application, the protection plate is a hard plate, and a gold finger is disposed on the hard plate and exposed to the rubber frame. The use of gold fingers instead of the prior art connectors to electrically connect external elements can reduce the manufacturing cost of the battery.
In some embodiments of the present application, the adhesive frame and the protective plate are fixed by a hot melt adhesive.
In some embodiments of the present application, the diameter D of the first limiting hole1Depth H from the first limit hole1Satisfies the following conditions: d1/H1＝1～3。
In some embodiments of the present disclosure, the number of the first limiting holes is at least two, and all the first limiting holes are located on the same side of the rubber frame. The length of the rubber frame is L1The distance between the first limit hole and one end of the rubber frame closest to the first limit hole is L2，L1And L2Satisfies the following conditions: l is1/L2＝3～6。
In some embodiments of the present disclosure, at least one of the first limiting holes is a kidney-shaped hole.
The application also provides an electronic device comprising the battery compartment. The electronic device further comprises the battery, wherein a limiting column is arranged in the battery bin and is used for being matched with the first limiting hole of the battery.
Drawings
Fig. 1 is a schematic view of the overall structure of a battery according to an embodiment of the present application.
Fig. 2 is a schematic view of the battery shown in fig. 1 at another angle.
Fig. 3 is an exploded view of the battery shown in fig. 2.
Fig. 4 is a schematic structural diagram of the battery shown in fig. 2 at another angle after a battery core is removed.
Fig. 5 is a schematic structural diagram of a battery cell of the battery shown in fig. 3.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Description of the main elements
Battery 1
Electronic device 2
Battery cell 10
Outer casing 11
Tab 12
Protective plate 20
Hot melt adhesive 21
Rubber frame 30
First limit hole 31
Injection molding 40
Second limit hole 41
Head tape 50
Third limit hole 51
First insulating tape 60
Second insulating tape 70
Housing body 110
Top seal 111
Side seal 112
Length L1、L2
Diameter D1
Depth H1
The following detailed description will further illustrate the present application in conjunction with the above-described figures.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1 to 3, an embodiment of the present application provides a battery 1 applied to an electronic device. The battery 1 includes a battery cell 10 and a protective plate 20 located at the top end of the battery cell 10, wherein the protective plate 20 is electrically connected to the battery cell 10. The battery 1 further comprises a rubber frame 30, the rubber frame 30 covers the protection plate 20, and the rubber frame 30 is provided with a first limiting hole 31 used for being matched with a limiting column in the electronic device. Specifically, the spacing column may be disposed within a battery compartment of the electronic device. When the battery 1 is installed in a battery compartment of an electronic device, the first position-limiting hole 31 may be engaged with a position-limiting post in the battery compartment. In the embodiment of the present application, the rubber frame 30 covers the protection plate 20 means that the protection plate 20 is located in the rubber frame 30, and the rubber frame 30 covers part or all of the surface of the protection plate 20; in an embodiment, the rubber frame 30 has a hollow structure and an opening may be formed near the surface of the battery cell 10, where the rubber frame 30 covers the top surface and the side surface of the protection plate 20. In another embodiment, the opening of the rubber frame 30 may also penetrate through the surface of the rubber frame away from the battery cell 10, and at this time, the rubber frame 30 only covers the side surface of the protection plate 20.
An injection molding part 40 formed by low-pressure injection molding is arranged in a gap between the rubber frame 30 and the top end of the battery cell 10, and a second limiting hole 41 corresponding to the first limiting hole 31 is formed in the injection molding part 40. The injection-molded part 40 may be used to cover the protection plate 20 and the tab 12, thereby protecting the protection plate 20 and the tab 12, and also to fix the protection plate 20 above the top end of the battery cell 10.
This application is through setting up first spacing hole 31 and set up the spacing hole 41 of second on injection molding 40 on gluey frame 30, and when battery 1 installed in electronic device, first spacing hole 31 and the spacing hole 41 of second can be passed in proper order to electronic device's spacing post outside-in. The first stopper hole 31 and the second stopper hole 41 can be fitted to stopper posts in the electronic device to thereby restrain the battery 1. When the battery 1 is subjected to mechanical abuse (such as collision, falling and the like), the movement of the battery 1 in the electronic device can be reduced, that is, the battery 1 is not easy to shake or shift in the electronic device, so that the battery 1 is kept in stable electrical contact with other elements of the electronic device, the risk of power failure of the electronic device due to the shift of the battery 1 is reduced, and the electronic device can normally work. The second limiting hole 41 can increase the matching depth of the limiting column and the limiting hole, so that the battery 1 can be more stably fixed in the electronic device.
On the other hand, because the first limiting hole 31 is disposed in the rubber frame 30 and the second limiting hole 41 is disposed in the injection molding member 40, that is, no additional component is required to be added in the battery 1 for disposing the limiting hole, the capacity of the battery 1 is not affected, and the volume of the battery 1 is not increased to occupy the space in the electronic device.
The injection molding part 40 can be made of insulating resin such as silica gel and epoxy resin, and the injection molding part 40 formed by low-pressure injection molding can be tightly attached to the protection plate 20 and the tab 12, so that a better protection effect is achieved.
As shown in fig. 1 and 3, in an embodiment, the number of the first limiting holes 31 is at least two, and all the first limiting holes 31 are located on the same side of the rubber frame 30. By providing at least two first limiting holes 31, the number of the matched limiting columns is at least two, so that the stability of the battery 1 in the electronic device can be improved. Of course, in other embodiments, the first limiting holes 31 may be disposed on two opposite sides of the rubber frame 30.
Further, the length of the rubber frame 30 is L1. The rubber frame 30 has opposite ends along the length direction. The distance between the first limiting hole 31 and the nearest end of the rubber frame 30 is L2(it will be understood that the first and second position-limiting holes 31 and 41 correspond, L being shown in FIG. 12I.e., the distance between the first limiting hole 31 and the end of the rubber frame 30 closest thereto). L is1And L2Satisfies the following conditions: l is1/L23-6. By defining L1And L2The first position-limiting hole 31 may be limited to be located on the rubber frame 30 not to be too close to the center or edge of the rubber frame 30, so that the battery 1 can be better limited when the first position-limiting hole 31 is matched with the position-limiting post. In this embodiment, L1Specifically 64mm, L2In particular 11mm, i.e. L1/L2About 5.82.
The at least one first limiting hole 31 may be a kidney-shaped hole. As shown in fig. 3, the number of the first limiting holes 31 is two, wherein one of the first limiting holes 31 is a kidney-shaped hole, and the other limiting hole is a circular hole. The battery 1 is defined to have a length direction and a width direction which are perpendicular to each other, and the first limiting hole 31 and the second limiting hole 41 can be used for limiting the displacement of the battery 1 in the length direction by matching with a limiting column in an electronic device. Meanwhile, the waist-shaped hole can allow the position alignment of the limiting column to be adjusted within a certain range in the position alignment process, so that the waist-shaped hole and the limiting column can reach a better matching position, and the subsequent disassembly is convenient. In another embodiment, both of the first limiting holes 31 are round holes. At this time, the first stopper hole 31 and the second stopper hole 41 can restrict the displacement of the battery 1 in the longitudinal direction and the width direction at the same time in cooperation with the stopper posts in the electronic device.
As shown in FIG. 3, when the first position-limiting hole 31 is a circular hole, the diameter D of the first position-limiting hole 311The depth H from the first limiting hole 311Satisfies the following conditions: d1/H11-3. Wherein, if D1/H1If the diameter is smaller than 1, the limiting column matched with the first limiting hole 31 is easy to break due to the small diameter; if D is1/H1If the depth is larger than 3, the depth of the first position-limiting hole 31 is too small, so that the position-limiting column is easily separated from the first position-limiting hole 31. Thus, by definition D1And H1The ratio of (3) can reduce the situation that the limiting column is easy to break or separate from the first limiting hole 31. In the present embodiment, D1Specifically, it may be 2.4mm, H1In particular 1mm, i.e.D1/H1About 2.4.
Referring to fig. 4, in one embodiment, the adhesive frame 30 and the protective plate 20 are fixed by a hot melt adhesive 21. Wherein the hot melt adhesive 21 can have viscosity under certain conditions (e.g., under the action of heat), and can fix the adhesive frame 30 and the protective plate 20 together. The hot melt 21 may be a polypropylene (PP) material.
In one embodiment, the battery cell 10 includes a case 11, an electrode assembly and an electrolyte (not shown) disposed in the case 11, and a tab 12 electrically connected to the electrode assembly, the tab 12 protruding from the case 11 and electrically connected to the protection plate 20. In one embodiment, the housing 11 may be a package bag packaged by an aluminum plastic film. That is, the battery cell 10 may be a soft-pack battery cell. At this time, referring to fig. 5, the case 11 includes a case body 110 for accommodating the electrode assembly and the electrolyte, and a top sealing edge 111 and a side sealing edge 112 connected to the case body 110, and the tab 12 protrudes from the top sealing edge 111 and is electrically connected to the protection plate 20. Of course, in another embodiment, the battery cell 10 is not limited to a soft package battery cell, and may also be a steel-clad battery cell or an aluminum-clad battery cell, and the application is not limited thereto.
Further, as shown in fig. 1 to 3, the battery 1 may further include a head tape 50, the head tape 50 covers the rubber frame 30 and the top end of the battery core 10, and the head tape 50 is provided with a third limiting hole 51 corresponding to the first limiting hole 31. The head tape 50 wraps the adhesive frame 30 and the top end of the battery cell 10, so that the risk that the adhesive frame 30 is separated from the battery cell 10 can be reduced. When the battery 1 is installed in an electronic device, the limiting column of the electronic device can sequentially pass through the third limiting hole 51, the first limiting hole 31 and the second limiting hole 41 from outside to inside.
As shown in fig. 3, in one embodiment, the battery 1 further includes a first insulating tape 60. The first insulating adhesive tape 60 covers the top end of the battery cell 10 and is located between the top end of the battery cell 10 and the protective plate 20. The first insulating tape 60 is used to electrically isolate the top end of the cell 10 from other components (e.g., the protective plate 20 or the tab 12). When the outer shell is a packaging bag formed by packaging an aluminum-plastic film, the first insulating adhesive tape 60 covers the exposed section of the top sealing edge 111 of the packaging bag, and since the aluminum-plastic film usually contains a metal layer, that is, the first insulating adhesive tape 60 can form insulating protection for the metal layer in the section area of the top sealing edge 111, and short-circuit faults caused by the fact that the metal layer is communicated with other elements are reduced. Since the protection plate 20 is generally folded to the side of the top sealing edge 111 after the tabs 12 are connected when manufactured, the first insulating tape 60 also serves to reduce the risk of the top sealing edge 111 being broken by the pressing of the protection plate 20, thereby improving the safety performance of the battery 1.
Further, the battery 1 further includes a second insulating tape 70, and the second insulating tape 70 covers the side surface of the battery cell 10. The second insulating tape 70 serves to provide insulation protection to the side surface of the battery cell 10 and reduce the risk of abrasion of the side surface of the battery cell 10 due to external force. The second insulating tape 70 may also extend to the areas of the upper and lower surfaces of the battery cell 10 adjacent to the side surfaces, so as to improve the bonding strength and the sealing effect of the second insulating tape 70. The battery cell 10 further includes a tail end disposed opposite to the top end. In a specific arrangement, the second insulating tape 70 may also extend to the tail end of the battery cell 10.
In one embodiment, the protection plate 20 is a hard plate, and a gold finger (not shown) is disposed on the hard plate and exposed to the rubber frame 30. The gold fingers are used to realize the electrical connection between the battery 1 and other components of the electronic device. In the prior art, the protection board generally comprises a hard board, a soft board connected with the hard board, and a connector arranged on the soft board. The present application can reduce the manufacturing cost of the battery 1 by eliminating the flexible board and using the gold finger instead of the connector to electrically connect other components of the electronic device. Further, a gold finger may be located at the head of the battery 1. Because the first limit hole 31 can limit the displacement of the battery 1 in the length direction by matching with the limit post in the electronic device, the risk of power failure of the electronic device can be effectively reduced.
In one embodiment, the battery 1 may be prepared by:
the method comprises the following steps: the top end of the battery cell 10 is covered with a first insulating tape 60, and the side surface of the battery cell 10 is covered with a second insulating tape 70.
Step two: the protective plate 20 is welded to the tab 12 of the cell 10, and then the protective plate 20 is folded over the top end of the cell 10 (e.g., the top sealing edge 111 side).
Step three: the protective plate 20 is covered with a rubber frame 30 to obtain an intermediate body. Wherein, the adhesive frame 30 and the protection plate 20 can be fixed by the hot melt adhesive 21.
Step four: and (3) placing the intermediate body in a low-pressure injection mold for low-pressure injection molding, injecting insulating resin into the gap between the rubber frame 30 and the top end of the battery cell 10, and curing to obtain the injection molding piece 40.
Wherein, a positioning column can be arranged in the low-pressure injection mold. When the intermediate is placed in the low-pressure injection mold, the first limiting hole 31 of the rubber frame 30 can be matched with a positioning column arranged in the low-pressure injection mold, so that the intermediate can be positioned in the low-pressure injection mold conveniently.
Step five: the head tape 50 is used to cover the top ends of the rubber frame 30 and the battery cell 10, thereby obtaining the battery 1.
Referring to fig. 6, the present application further provides an electronic device 2, which includes the battery 1 and a battery compartment (not shown). A limiting column is arranged in the battery compartment of the electronic device 2, and the limiting column is used for matching with the first limiting hole 31 of the battery 1. The electronic device 2 may be a consumer electronic product, such as a smart phone. It is understood that in other embodiments, the electronic device 2 may also be a power tool, an energy storage device, a power device, or the like.
In one embodiment, the battery 1 and the battery compartment are also connected by a double-sided tape. The double faced adhesive tape is used for further increasing the stability of the connection between the battery 1 and the battery compartment and reducing the movement of the battery 1 in the electronic device.
Although the present application has been described in detail with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present application.

Claims (10)

1. The utility model provides a battery, is applied to electron device, the battery includes electric core and is located the protection shield on electric core top, the protection shield with electric core electricity is connected, its characterized in that, the battery still includes:
the rubber frame wraps the protection plate, and is provided with a first limiting hole matched with a limiting column in the electronic device;
an injection molding piece formed by low-pressure injection molding is arranged in a gap between the rubber frame and the top end of the battery core, and a second limiting hole corresponding to the first limiting hole is formed in the injection molding piece.
2. The battery of claim 1, further comprising a head tape, wherein the head tape covers the rubber frame and the top end of the cell, and the head tape is provided with a third limiting hole corresponding to the first limiting hole.
3. The battery of claim 1, further comprising a first insulating tape covering the cell tip and positioned between the cell tip and the protective plate.
4. The battery of claim 3, further comprising a second insulating tape that wraps around a side of the cell.
5. The battery of claim 1, wherein the protective plate is a hard plate on which a gold finger is disposed, the gold finger being exposed to the adhesive frame.
6. The battery of claim 1, wherein the adhesive frame and the protective plate are fixed by a hot melt adhesive.
7. The battery of claim 1, wherein the first limiting hole has a diameter D1Depth H of the first limit hole1Satisfies the following conditions: d1/H1＝1～3。
8. The battery of claim 1, wherein the number of the first limiting holes is at least two, and all the first limiting holes are located on the same side of the rubber frame; the length of the rubber frame is L1The distance between the first limiting hole and the end, closest to the first limiting hole, of the rubber frame is L2，L1And L2Satisfies the following conditions: l is1/L2＝3～6。
9. The battery of claim 8, wherein at least one of the first limiting holes is a kidney-shaped hole.
10. An electronic device comprising a battery compartment, wherein the electronic device further comprises the battery of any one of claims 1 to 9, and a position-limiting post is disposed in the battery compartment, and the position-limiting post is configured to engage with the first position-limiting hole of the battery.
CN202010898612.2A 2020-08-31 2020-08-31 Battery and electronic device Pending CN111969151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010898612.2A CN111969151A (en) 2020-08-31 2020-08-31 Battery and electronic device

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Application Number Priority Date Filing Date Title
CN202010898612.2A CN111969151A (en) 2020-08-31 2020-08-31 Battery and electronic device

Publications (1)

Publication Number Publication Date
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Publication number Priority date Publication date Assignee Title
CN112787031A (en) * 2021-01-20 2021-05-11 东莞新能德科技有限公司 Battery and electric device
CN112787031B (en) * 2021-01-20 2023-08-11 东莞新能德科技有限公司 Battery and electricity utilization device

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