CN117013169A - Electronic equipment, middle frame assembly and manufacturing method thereof - Google Patents

Electronic equipment, middle frame assembly and manufacturing method thereof Download PDF

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Publication number
CN117013169A
CN117013169A CN202210470747.8A CN202210470747A CN117013169A CN 117013169 A CN117013169 A CN 117013169A CN 202210470747 A CN202210470747 A CN 202210470747A CN 117013169 A CN117013169 A CN 117013169A
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CN
China
Prior art keywords
shell
frame assembly
battery
substrate
electrode
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
CN202210470747.8A
Other languages
Chinese (zh)
Inventor
谢红斌
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.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp 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 Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN202210470747.8A priority Critical patent/CN117013169A/en
Publication of CN117013169A publication Critical patent/CN117013169A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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

The application discloses electronic equipment, a middle frame assembly and a manufacturing method thereof. The middle frame assembly includes a base plate and a battery. The battery comprises a shell, an electrode assembly and electrolyte, wherein the electrode assembly and the electrolyte are contained in the shell, and the shell is welded on one side surface of the substrate or the shell and the substrate are of an integrated structure. Through the mode, the shell of the battery is welded with the substrate or is of an integrated structure, double-sided adhesive tape or easy-to-pull adhesive tape is not needed for bonding the battery, and the thickness of the middle frame assembly is reduced.

Description

Electronic equipment, middle frame assembly and manufacturing method thereof
Technical Field
The application relates to the technical field of electronic equipment, in particular to electronic equipment, a middle frame assembly and a manufacturing method thereof.
Background
At present, batteries in electronic equipment such as mobile phones, tablet computers and intelligent wearable equipment generally adopt a soft aluminum plastic film as a shell of the battery, and the shell of the battery is adhered to a middle frame of the whole machine by double faced adhesive tape or easy-to-pull adhesive tape, so that the purpose of installing the battery is achieved.
However, the above-mentioned manner of mounting the battery may result in a glue layer formed between the battery case and the middle frame, which increases the thickness of the electronic device. Under the market demand that electronic equipment is increasingly pursued to be light and thin nowadays, the thickness of a battery is reduced under the condition of rated overall thickness, so that the current battery capacity is insufficient, and the market competitiveness is lacking.
Disclosure of Invention
The application mainly solves the technical problem of providing the electronic equipment, the middle frame assembly and the manufacturing method thereof, and can improve the energy density of a battery.
In order to solve the technical problems, the application adopts a technical scheme that: there is provided a middle frame assembly for an electronic device, comprising:
a substrate;
the battery comprises a shell, an electrode assembly and electrolyte, wherein the electrode assembly and the electrolyte are contained in the shell, and the shell is welded on one side surface of the substrate or the shell and the substrate are of an integrated structure.
In order to solve the technical problems, the application adopts another technical scheme that: the manufacturing method of the middle frame component applied to the electronic equipment comprises the following steps:
providing a substrate and a battery, wherein the battery comprises a shell, an electrode assembly and an electrolyte, and the electrode assembly and the electrolyte are contained in the shell;
and welding the shell on one side surface of the substrate to obtain the middle frame assembly.
In order to solve the technical problems, the application adopts another technical scheme that: there is provided an electronic device including:
a control circuit board;
according to the middle frame assembly provided by the application, the control circuit board is arranged on one side of the base plate and is electrically connected with the battery.
The beneficial effects of the application are as follows: the frame assembly of the present application includes a substrate and a battery, unlike the prior art. The battery comprises a shell, an electrode assembly and electrolyte, wherein the electrode assembly and the electrolyte are contained in the shell, and the shell is welded on one side surface of the substrate or the shell and the substrate are of an integrated structure. Therefore, in the application, the shell of the battery and the substrate are welded together or are of an integrated structure, double-sided adhesive tape or easy-to-pull adhesive tape is not needed for bonding the battery, the adhesive layer is omitted, the thickness of the middle frame assembly is reduced, and the thickness of the electronic equipment is further reduced. Meanwhile, when the thickness of the electronic equipment is fixed, the energy density of the battery can be improved by the middle frame assembly, and the space utilization rate of the electronic equipment is improved.
Drawings
FIG. 1 is a schematic diagram of a back structure of an electronic device according to an embodiment of the application;
FIG. 2 is a schematic diagram of an embodiment of a frame assembly according to the present application;
FIG. 3 is a side view of an embodiment of the middle frame assembly of FIG. 2;
FIG. 4 is a schematic view of a battery in an embodiment of a middle frame assembly of the present application;
FIG. 5 is a schematic view of a housing structure of an embodiment of a middle frame assembly of the present application;
FIG. 6 is a schematic view of a housing structure of another embodiment of a frame assembly of the present application;
FIG. 7 is a schematic cross-sectional view of the region A-A' of the middle frame assembly of the embodiment of FIG. 2;
FIG. 8 is a perspective view of the interior of a battery of one embodiment of a center assembly of the present application;
fig. 9 is an internal perspective view of the battery in the alternative embodiment of fig. 8;
FIG. 10 is a flow chart of an embodiment of a method for manufacturing a frame assembly according to the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, a description of the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, mechanism, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, mechanisms, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
As used herein, an "electronic device" (which may also be referred to as a "terminal" or "mobile terminal" or "electronic device") includes, but is not limited to, a device configured to receive/transmit communication signals via a wireline connection (e.g., via a public-switched telephone network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network) and/or via a wireless interface (e.g., with respect to a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellites or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. The mobile phone is the electronic equipment provided with the cellular communication module.
Referring to fig. 1, fig. 1 is a schematic diagram of a back structure of an electronic device according to an embodiment of the present application, where the electronic device according to the embodiment of the present application may include a mobile phone, a tablet computer, a notebook computer, a wearable device, etc. The present embodiment is described with reference to a mobile phone as an example.
Specifically, the electronic device may include a center frame assembly 10, a rear cover 20, a display (not shown), a control circuit board 40, and a camera module 50. The electronic device in the present embodiment may include a plurality of camera modules 50. The camera module 50 may be connected to the rear cover 20 or the display screen (forming a front and rear camera structure); the rear cover 20 and the middle frame assembly 10 cooperate to form an accommodating space, the control circuit board 40 is located at one side of the middle frame assembly 10 and is disposed in the accommodating space, and the control circuit board 40 is electrically connected with the camera module 50, the middle frame assembly 10 and the display screen. When shooting is required, the camera module 50 can receive external light for imaging. The center assembly 10 of the present application is used to provide power to the display, control circuit board 40 and camera module 50. The detailed technical features related to the structures of other parts of the electronic device are within the understanding scope of those skilled in the art, and will not be described herein.
Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of an embodiment of the middle frame assembly according to the present application, and fig. 3 is a side view of the embodiment of the middle frame assembly in fig. 2.
In the present embodiment, the center assembly 10 includes a substrate 110 and a battery 120. The battery 120 is provided on one side surface of the substrate 110. The arrangement of the battery 120 is not limited to the position shown in the drawing, and the battery 120 may be located on any one side surface of the substrate 110.
Alternatively, the remaining surface of the substrate 110 may be mounted with components such as a control circuit board, sensors, speakers, etc. of the electronic device. The substrate 110 may be surrounded by a side frame (not shown), which may be conductive metal, and may further be provided with an antenna.
Alternatively, the material of the substrate 110 may be a metal such as stainless steel, aluminum alloy, magnesium alloy, etc., but the material is not limited thereto and may be other.
In the present embodiment, the substrate 110 and the battery 120 are welded together by welding, pressure welding, and soldering. Or the substrate 110 and the battery 120 are integrally formed, so that the battery 120 and the substrate 110 are fixedly connected together. In this way, the battery 120 and the substrate 110 can be fixedly connected without a glue layer, so that the thickness of the middle frame assembly 10 is reduced.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a battery according to an embodiment of the present application. The battery 120 includes a case 121, an electrolyte (not shown) accommodated inside the case 121, and an electrode assembly (not shown).
The electrolyte is filled in the casing 121, the electrode assembly is soaked in the electrolyte, and the electrolyte provides an ion-conducting environment for the electrode assembly, so that ion exchange is performed in the electrode assembly, and the charging and discharging effects of the battery 120 are further achieved.
Optionally, the outer surface of the housing 121 is provided with a liquid injection hole 1211, a conductive post 1212 and a pressure relief valve 1213.
The filling hole 1211 is used for filling electrolyte, the conductive electrode post 1212 is electrically connected with the electrode assembly, the circuit of the electrode assembly is led out, and the pressure release valve 1213 is used for releasing the internal pressure of the battery 120 to prevent the battery 120 from deforming and cracking.
In this embodiment, the housing 121 is a rigid housing. Alternatively, the material of the housing 121 may be stainless steel, aluminum alloy, magnesium alloy, or the like.
The battery 120 in this embodiment has rigidity and a more uniform shape than the conventional aluminum-clad flexible battery. When the frame assembly 10 is applied to an electronic device in this embodiment, the space reserved for the size fluctuation of the battery 120 is reduced, and the space utilization of the electronic device is improved. Meanwhile, in the same battery space, the battery 120 in the present embodiment has a larger battery capacity than the aluminum-clad flexible battery, which improves the battery energy density.
Referring to fig. 2 and 5, fig. 5 is a schematic view of a housing structure of an embodiment of a frame assembly according to the present application.
In the present embodiment, the housing 121 includes a shell 1214 and a cover 1215. The housing 1214 serves to form a receiving chamber 1216 having an opening, and the above-described electrolyte and electrode assembly are received in the receiving chamber 1216.
After the electrode assembly is filled, a cover 1215 is provided over the opening of the receiving chamber 1216 to seal the receiving chamber 1216. The seal may be welded to the housing 1214 and the cover 1215, completing the packaging of the battery 120.
After the battery 120 is packaged, the case 121 is welded to one side surface of the substrate 110, and the battery 120 and the substrate 110 are fixedly connected. The cover 1215 may be welded to the substrate 110, or the housing 1214 may be welded to the substrate 110 by fusion, pressure, or soldering.
In this embodiment, the rigid housing battery 120 is welded to the substrate 110 by welding, so that the battery 120 and the substrate 110 are integrated, and the adhesive layer is subtracted from the thickness direction, thereby reducing the thickness of the middle frame assembly 10. And the substrate 110 does not need to reserve redundant battery bins, so that the space utilization rate of the middle frame assembly 10 is improved. Meanwhile, the materials of the case 121 and the substrate 110 may be metal, and in the case where the case 121 and the substrate 110 are welded, the heat dissipation performance of the battery 120 in this embodiment is good.
Referring to fig. 2 and 6, fig. 6 is a schematic view of a housing structure of another embodiment of the frame assembly of the present application.
In this embodiment, the case 121 is provided with a receiving chamber 1216 having an opening, and the electrolyte and electrode assembly are received in the receiving chamber 1216.
In this embodiment, the base plate 110 is positioned over the opening of the receiving cavity 1216 to seal the receiving cavity 1216. The sealing may be performed by welding the case 121 and the substrate 110 together, and the battery 120 may be packaged by welding, pressure welding, and soldering.
Thus, in the present embodiment, the case 121 and the substrate 110 are of a unitary structure, and a portion of the substrate 110 serves as a housing that encapsulates the battery 120.
In the present embodiment, the thickness of the center frame assembly 10 is reduced by providing the case 121 and the substrate as a unitary structure such that the battery 120 and the substrate 110 are integrated, and subtracting the adhesive layer in the thickness direction. And the substrate 110 does not need to reserve redundant battery bins, so that the space utilization rate of the middle frame assembly 10 is improved. Meanwhile, the materials of the case 121 and the substrate 110 may be metal, and in the case where the case 121 and the substrate 110 are welded, the heat dissipation performance of the battery 120 in this embodiment is good.
In the prior art, the battery is generally mounted by means of adhesion. However, in the case of mechanical abuse such as extreme drop, the battery may be separated from the electronic device body, resulting in safety accidents such as liquid leakage and fire. The casing 121 in this embodiment is connected with the substrate 110 by welding, so as to strengthen the stability of the battery 120, prevent the battery from being separated from the electronic device body, and improve the use safety of the battery 120.
Please refer to fig. 2, fig. 7 and fig. 8 together. Fig. 7 is a schematic sectional view of the region A-A' of the middle frame assembly in the embodiment of fig. 2, and fig. 8 is a perspective view of the inside of a battery according to an embodiment of the middle frame assembly of the present application.
Further, the electrode assembly includes a positive electrode tab 122, a negative electrode tab 124, a separator 123, a positive electrode tab 125, and a negative electrode tab 126.
Specifically, the positive electrode tab 122 and the negative electrode tab 124 may be stacked in the thickness direction of the battery 120, and the separator 123 is located between the positive electrode tab 122 and the negative electrode tab 124, which can prevent an electrical short circuit and allow ions to move between the positive electrode tab 122 and the negative electrode tab 124. The positive electrode sheet 122, the negative electrode sheet 124, and the separator 123 are substantially in a strip-like structure and elongated in a direction perpendicular to the stacking direction to form a wound structure, however, in other embodiments, the electrode assembly may be formed in a stacked structure, and the present application is not limited thereto.
Specifically, the positive electrode tab 122 may include a positive electrode current collector and a positive electrode active material base layer formed on a surface of the positive electrode current collector. Wherein the positive electrode active material base layer is formed by coating a positive electrode active material on a coating region of the positive electrode current collector. Similarly, the negative electrode tab 124 may also include a negative electrode current collector and a negative electrode active material base layer forming a surface of the negative electrode current collector. Wherein the negative electrode active material base layer is formed by coating a negative electrode active material on a coating region of the negative electrode current collector.
In the present embodiment, the positive tab 125 is disposed on one side of the positive electrode sheet 122, and may be formed of an uncoated region extending from a coated region of the positive electrode sheet. The negative electrode tab 126 is disposed on a side of the negative electrode sheet 124 remote from the positive electrode sheet 122, and may be formed by an uncoated region extending from a coated region of the negative electrode sheet 124. I.e., positive tab 125 and negative tab 126 are located on opposite sides of battery 120.
In this embodiment, the positive electrode tab 125 is electrically connected to a conductive electrode post 1212 provided on one side of the housing 121, and the current is led out through the conductive electrode post 1212, and the negative electrode tab 126 is directly electrically connected to the housing 121. Since the case 121 in this embodiment is made of a metal material such as stainless steel, aluminum alloy, magnesium alloy, etc., in the case where the battery 120 of the present application is turned on, the case 121 serves as the negative electrode of the battery 120, and the conductive post 1212 serves as the positive electrode of the battery 120. Wherein the outer circumference of the conductive post may be provided with insulation to prevent shorting of the housing 121 and the conductive post 1212.
Of course, in other embodiments, the negative electrode tab 126 may be electrically connected to the conductive electrode post 1212, and the positive electrode tab 125 may be electrically connected to the housing 121, such that the housing 121 serves as the positive electrode of the battery 120 and the conductive electrode post 1212 serves as the negative electrode of the battery.
In the related art, electrode assemblies of electronic devices are usually connected to a control circuit board of the electronic device through tabs on the same side and positive and negative terminals on the same side of a battery. However, in the case of increasingly pursuing slimness and thinness of electronic devices, the thickness of the battery is reduced, and if tabs are still formed on the same side of the electrode assembly, the width of the tabs is limited, reducing the overcurrent capability of the tabs. Meanwhile, two lugs are piled up on one side, so that uneven temperature distribution of the battery is easy to cause, and heat dissipation is difficult.
In this embodiment, the tabs are arranged on different sides of the battery assembly, the positive tab 125 and the negative tab 126 are arranged on different sides of the battery 120, the width of each tab is increased, the overcurrent capacity of each tab is increased, the condition of uneven temperature distribution is not caused, and the performance of the battery is improved.
Further, since the case 121 in the present embodiment is welded to the substrate 110 or is integrally formed with the substrate 110, the substrate 110 and the case 121 can simultaneously serve as one electrode of the battery 120. When the middle frame assembly 10 is applied to electronic equipment, the battery 120 and the whole electronic equipment can still be well connected under the extreme mechanical abuse condition, and the mechanical safety performance of the battery 120 is remarkably improved.
Referring to fig. 9, fig. 9 is an internal perspective view of the battery in the alternative embodiment of fig. 8.
This embodiment includes a plurality of negative electrode tabs 126, and the number of negative electrode tabs 126 may be 2 as shown in fig. 9, or 3 or more, with respect to the embodiment shown in fig. 10.
The positive tab 125 is electrically connected to the conductive post 1212, and the plurality of negative tabs 126 are electrically connected to the case 121.
Because the plurality of negative electrode lugs 126 are arranged in the embodiment, the plurality of negative electrode lugs 126 have a current splitting effect, so that the internal resistance of the battery 120 is reduced, the temperature rise of the monopolar lug when the current carrying is overhigh is also reduced, and the performance of the battery 120 is improved.
Of course, in other embodiments, the electrode assembly may further include a plurality of positive tabs 125, wherein the plurality of positive tabs 125 are electrically connected to the housing 121, and the negative tab 126 is electrically connected to the conductive post 1212. The plurality of positive lugs 125 can also have a shunt effect on current, so that the internal resistance of the battery 120 is reduced, the temperature rise of the monopolar lugs when the current carrying capacity is too high is also reduced, and the performance of the battery 120 is improved.
Further, the application also provides a manufacturing method of the middle frame assembly applied to the electronic equipment.
Referring to fig. 10, fig. 10 is a flow chart illustrating an embodiment of a method for manufacturing a frame assembly according to the present application. This embodiment includes:
s11: a substrate and a battery are provided.
Provided are a substrate and a battery, wherein the substrate may be made of a metal material such as stainless steel, aluminum, an aluminum alloy, a magnesium alloy, or the like. The side frame can be arranged around the substrate, can be used as the side frame of the electronic equipment, can be conductive metal, and can be provided with an antenna.
The battery includes a case, an electrolyte accommodated inside the case, and an electrode assembly.
In this embodiment, the casing of battery is rigid casing, and for current soft battery of aluminium package, rigid casing battery's appearance is more neat for the undulant space of battery size reduces, reduces the space that the battery occupy, improves space utilization.
Alternatively, the housing may include an outer shell and a cover. The shell is used for forming a containing cavity with an opening, the electrolyte and the electrode assembly are contained in the containing cavity, and the cover body is covered in the opening of the shell to seal the containing cavity. The cover body can be welded in the opening of the shell in a welding mode.
Alternatively, the case may be a receiving chamber having an opening, in which the electrolyte and the electrode assembly are received.
The electrode assembly comprises a positive plate, a negative plate, a separator, a positive tab and a negative tab.
Alternatively, the positive electrode sheet and the negative electrode sheet may be stacked in the thickness direction of the battery, with the separator between the positive electrode sheet and the negative electrode sheet, which can prevent an electrical short and allow ions to move between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet, the negative electrode sheet, and the separator are substantially in a strip-like structure and elongated in a direction perpendicular to the stacking direction to form a wound structure, however, in other embodiments, the electrode assembly may be formed in a stacked structure, which is not limited thereto.
Alternatively, the positive electrode sheet may include a positive electrode current collector and a positive electrode active material base layer formed on a surface of the positive electrode current collector. Wherein the positive electrode active material base layer is formed by coating a positive electrode active material on a coating region of the positive electrode current collector. Similarly, the negative electrode sheet may also include a negative electrode current collector and a negative electrode active material base layer forming a surface of the negative electrode current collector. Wherein the negative electrode active material base layer is formed by coating a negative electrode active material on a coating region of the negative electrode current collector.
In this embodiment, the positive tab is disposed on one side of the positive plate, and may be formed by an uncoated region extending from a coated region of the positive plate. The negative electrode tab is disposed on a side of the negative electrode sheet away from the positive electrode sheet, and may be formed by an uncoated region extending from a coated region of the negative electrode sheet. I.e., the positive tab and the negative tab are located on opposite sides of the battery.
In this embodiment, the positive electrode tab is electrically connected to a conductive electrode post disposed on one side of the housing, and the current is led out of the outside through the conductive electrode post, and the negative electrode tab is directly electrically connected to the housing. Because the shell is made of metal materials such as stainless steel, aluminum alloy, magnesium alloy and the like, when the battery is conducted, the shell is used as the negative electrode of the battery, and the conductive electrode post is used as the positive electrode of the battery. Wherein the outer circumference of the conductive electrode post may be provided with an insulating member to prevent the housing and the conductive electrode post from being short-circuited.
Of course, in other embodiments, the negative electrode tab may be electrically connected to the conductive electrode post, and the positive electrode tab may be electrically connected to the housing, such that the housing functions as the positive electrode of the battery and the conductive electrode post functions as the negative electrode of the battery.
S12: the case is welded to one side surface of the substrate.
After the electrode assembly of the battery is filled into the shell, the shell is welded on one side surface of the substrate, and the middle frame assembly is obtained. The welding mode can be fusion welding, pressure welding and soldering, so that the battery and the substrate are fixedly connected together. The battery and the base plate can be fixedly connected without a glue layer, the glue layer is removed, and the thickness of the middle frame assembly is reduced. The remaining surface of the substrate may be populated with components such as control circuit boards, sensors, speakers, etc. of the electronic device.
In the case where the case includes the case and the cover, the case or the cover may be welded to one side surface of the substrate.
When the housing is a housing cavity having an opening, the substrate can be covered on the opening, and the housing cavity is sealed with the substrate.
In this embodiment, therefore, the thickness of the center frame assembly is reduced by welding the battery and the substrate such that the battery and the substrate are integral, and subtracting the glue layer in the thickness direction. And because the substrate does not need to reserve redundant battery bins, the space utilization rate of the middle frame assembly is improved. Meanwhile, the materials of the shell and the substrate can be metal, and under the condition that the shell and the substrate are welded, the heat dissipation performance of the battery is good, and the substrate and the shell can be used as one electrode of the battery at the same time. Under the condition of extreme mechanical abuse, the battery and the whole external equipment can still be well connected, and the mechanical safety performance of the battery is remarkably improved.
The middle frame assembly substrate and the battery are integrated, and when the middle frame assembly is applied to the electronic equipment, the electronic equipment is assembled without assembling other batteries again, so that the assembly time is saved, and the assembly efficiency of the electronic equipment is improved.
The foregoing description is only illustrative of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present application.

Claims (10)

1. A center assembly for an electronic device, comprising:
a substrate;
the battery comprises a shell, an electrode assembly and electrolyte, wherein the electrode assembly and the electrolyte are contained in the shell, and the shell is welded on one side surface of the substrate or the shell and the substrate are of an integrated structure.
2. The middle frame assembly of claim 1, wherein the frame assembly comprises a frame assembly,
the casing comprises a shell and a cover body, wherein the shell is used for forming a containing cavity with an opening, the electrode assembly and electrolyte are contained in the containing cavity, the cover body is covered on the opening and seals the containing cavity, and the cover body or the shell is welded with the substrate.
3. The middle frame assembly of claim 1, wherein the frame assembly comprises a frame assembly,
the shell is provided with a containing cavity, the containing cavity is provided with an opening, and the substrate is covered on the opening and seals the containing cavity.
4. The mullion assembly of claim 1, wherein the enclosure is a rigid enclosure.
5. The middle frame assembly of claim 4, wherein the frame assembly comprises a frame assembly,
the materials of the base plate and the shell are made of any one of stainless steel, aluminum alloy and magnesium alloy.
6. The middle frame assembly according to any one of claims 1 to 5, wherein,
the electrode assembly comprises a positive plate, a negative plate, a separator, a positive lug and a negative lug, wherein the positive plate and the negative plate are stacked, the separator is arranged between the positive plate and the negative plate, the positive lug is arranged on one side of the positive plate, and the negative lug is arranged on one side of the negative plate away from the positive plate.
7. The middle frame assembly of claim 6, wherein the frame assembly comprises,
the shell is provided with a conductive electrode column, the negative electrode lug is electrically connected with the conductive electrode column, and the positive electrode lug is electrically connected with the shell; or alternatively
The positive electrode lug is electrically connected with the conductive electrode post, and the negative electrode lug is electrically connected with the shell.
8. The middle frame assembly of claim 7, wherein the frame assembly comprises,
the negative electrode lugs are electrically connected with the conductive electrode posts, the number of the positive electrode lugs is multiple, and the positive electrode lugs are electrically connected with the shell; or alternatively
The positive lugs are electrically connected with the conductive electrode posts, the number of the negative lugs is multiple, and the positive lugs are electrically connected with the shell.
9. A method for manufacturing a middle frame assembly applied to an electronic device, comprising the steps of:
providing a substrate and a battery, wherein the battery comprises a shell, an electrode assembly and an electrolyte, and the electrode assembly and the electrolyte are contained in the shell;
and welding the shell on one side surface of the substrate to obtain the middle frame assembly.
10. An electronic device, comprising:
a control circuit board;
the center assembly of any of claims 1-8, wherein the control circuit board is disposed on one side of the base plate and is electrically connected to the battery.
CN202210470747.8A 2022-04-28 2022-04-28 Electronic equipment, middle frame assembly and manufacturing method thereof Pending CN117013169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210470747.8A CN117013169A (en) 2022-04-28 2022-04-28 Electronic equipment, middle frame assembly and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210470747.8A CN117013169A (en) 2022-04-28 2022-04-28 Electronic equipment, middle frame assembly and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN117013169A true CN117013169A (en) 2023-11-07

Family

ID=88569733

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210470747.8A Pending CN117013169A (en) 2022-04-28 2022-04-28 Electronic equipment, middle frame assembly and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN117013169A (en)

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