WO2022258027A1 - 电池组件及电子设备 - Google Patents

电池组件及电子设备 Download PDF

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Publication number
WO2022258027A1
WO2022258027A1 PCT/CN2022/097934 CN2022097934W WO2022258027A1 WO 2022258027 A1 WO2022258027 A1 WO 2022258027A1 CN 2022097934 W CN2022097934 W CN 2022097934W WO 2022258027 A1 WO2022258027 A1 WO 2022258027A1
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WO
WIPO (PCT)
Prior art keywords
battery
electrical
glue
circuit
conductive layer
Prior art date
Application number
PCT/CN2022/097934
Other languages
English (en)
French (fr)
Inventor
杨展
魏强
Original Assignee
维沃移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2022258027A1 publication Critical patent/WO2022258027A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the application belongs to the technical field of electronic products, and in particular relates to a battery assembly and electronic equipment.
  • the battery is generally fixed in the battery compartment by bonding, that is, double-sided adhesive tape and an easy-to-use adhesive are arranged between the bottom surface of the battery and the surface of the battery compartment Remove the polyethylene terephthalate (PET) to achieve the purpose of fixing the battery box for maintenance and easy disassembly. Furthermore, it can also be directly fixed with double-sided adhesive tape and cannot be disassembled.
  • bonding that is, double-sided adhesive tape and an easy-to-use adhesive are arranged between the bottom surface of the battery and the surface of the battery compartment Remove the polyethylene terephthalate (PET) to achieve the purpose of fixing the battery box for maintenance and easy disassembly. Furthermore, it can also be directly fixed with double-sided adhesive tape and cannot be disassembled.
  • PET polyethylene terephthalate
  • the easy-to-detachable PET method is relatively expensive and cannot be reused, and it is easy to cause battery deformation during the disassembly process, which affects battery use and may even cause safety problems;
  • the double-sided adhesive is easy to delaminate and form residual adhesive in the battery compartment, which makes it difficult to remove.
  • the purpose of the embodiments of the present application is to provide a battery assembly and an electronic device, which can solve at least one of the above problems.
  • An embodiment of the present application provides a battery assembly, the battery assembly includes:
  • a battery body the battery body includes a battery cell, a protective plate electrically connected to the battery cell, and a wrapping film wrapped outside the battery cell, and the wrapping film includes a conductive layer;
  • the electrical glue is arranged between the conductive layer and the installation body, and the electrical glue is electrically connected to the conductive layer and the protective plate respectively;
  • the protective plate, the battery core, the conductive layer and the electrical glue form a circuit, and when the circuit is open, the electrical glue is fixedly connected to the conductive layer and the installation body respectively, Where the circuit is a via, the electrical glue is separated from at least one of the conductive layer and the mounting body.
  • the embodiment of the present application also provides an electronic device.
  • the electronic device includes a device body and a battery assembly.
  • the device body includes a battery compartment.
  • the battery compartments are detachably connected by electrical glue.
  • a wrapping film is provided on the outside of the battery body, the wrapping film includes a conductive layer, and the electrical glue is arranged between the conductive layer and the installation body (such as a battery compartment, etc.).
  • the protection board is electrically connected, so that the protection board, the battery core, the conductive layer and the electrical glue can form a power supply circuit. When the circuit is a path, it can supply power to the electrical glue. powered by. Based on the characteristics of the electrical adhesive itself, the electrical adhesive can be separated from at least one of the conductive layer and the installation body when energized, and can fix the conductive layer and the installation body together when the electrical adhesive is not energized.
  • the electrical glue when the battery body does not need to be disassembled, the electrical glue can be in a power-off state, and when the battery body needs to be disassembled, the electrical glue can be energized, so that the electrical glue is separated from at least one of the conductive layer and the installation body, In order to facilitate the detachment of the battery body from the installation main body, thereby facilitating the repair, maintenance or replacement of the battery body.
  • the electrical glue in this application is convenient to disassemble and assemble the battery body, so that it can be reused, and it is not easy to cause deformation of the battery body, which ensures the normal use of the battery and improves the safety of the battery; and, because it does not Use double-sided tape, so that there will be no residual double-sided tape on the installation body, and thus will not cause the problem of difficulty in cleaning the double-sided tape.
  • FIG. 1 is a schematic diagram of a battery assembly disclosed in an embodiment of the present application
  • Fig. 2 is a schematic diagram of the assembly of the first form of battery assembly disclosed in the embodiment of the present application;
  • Fig. 3 is a schematic diagram of the assembly of the second form of battery assembly disclosed in the embodiment of the present application.
  • Fig. 4 is a schematic diagram of the assembly of the battery assembly of the third form disclosed in the embodiment of the present application.
  • Fig. 5 is a schematic cross-sectional view of the first form of the wrapping film disclosed in the embodiment of the present application.
  • FIG. 6 is a schematic cross-sectional view of a second form of the wrapping film disclosed in the embodiment of the present application.
  • FIG. 7 is a schematic cross-sectional view of the first form of the battery assembly disclosed in the embodiment of the present application.
  • Fig. 8 is a schematic cross-sectional view of the second form of the battery assembly disclosed in the embodiment of the present application.
  • Fig. 9 is a schematic diagram of using the first circuit to supply power to the electrical glue disclosed in the embodiment of the present application.
  • Fig. 10 is a schematic diagram of using the second circuit to supply power to the electrical glue and using the third circuit to charge the battery body disclosed in the embodiment of the present application;
  • Fig. 11 is a longitudinal section schematic diagram of the electrical glue disclosed in the embodiment of the present application.
  • Fig. 12 is a cross-sectional schematic diagram of the electrical glue disclosed in the embodiment of the present application.
  • Fig. 13 is a schematic diagram of the electrical glue disclosed in the embodiment of the present application switching from non-energized to energized;
  • Fig. 14 is a schematic diagram of the first switch controlling the on-off of the first circuit disclosed in the embodiment of the present application;
  • Fig. 15 is a flow chart of disassembling the battery disclosed in the embodiment of the present application.
  • Fig. 16 is a schematic diagram of the second switch controlling the on-off of the second circuit and the third switch controlling the on-off of the third circuit disclosed in the embodiment of the present application;
  • Fig. 17 is a flow chart of disassembling and charging the battery disclosed in the embodiment of the present application.
  • Fig. 18 is a control schematic diagram of the first switch, the second switch and the third switch disclosed in the embodiment of the present application.
  • 100-battery body 110-cell; 111-battery positive ear; 112-battery negative ear; 120-protection plate; 130-wrapping film; 131-conductive layer; 132-protective layer; Anti-corrosion layer; 140-connector; 141-positive terminal; 142-negative terminal;
  • the embodiment of the present application discloses a battery assembly, and the disclosed battery assembly includes a battery body 100 and an electrical glue 200 .
  • the battery body 100 includes a cell 110 , a protective plate 120 and a wrapping film 130 , wherein the protective plate 120 is electrically connected to the cell 110 , and the wrapping film 130 is wrapped around the cell 110 .
  • the protection plate 120 is disposed at one end of the cell 110 .
  • the protective plate 120 is a protective component of the battery body 100.
  • the protective plate 120 includes a high-speed switch and an integrated circuit.
  • the high-speed switch is generally connected in series with a metal-oxide-semiconductor (MOS) tube in the main discharge circuit.
  • MOS metal-oxide-semiconductor
  • the integrated circuit is composed of precise comparators, and controls high-speed switches by monitoring the voltage difference of the battery body 100 and so on.
  • the protection board 120 is also provided with resistors, capacitors, auxiliary current fuses, positive temperature coefficient components, memory and the like.
  • the battery body 100 can be protected through the protection plate 120 , for example, overcharge protection, overdischarge protection, overcurrent protection, temperature protection, and the like. Therefore, the battery body 100 can be protected in real time through the protection plate 120 to ensure that the battery body 100 works within a normal range.
  • the wrapping film 130 is wrapped on the outside of the battery cell 110 , so as to effectively prevent the electrolyte from leaking, and prevent outside moisture and air from entering and reacting with the electrolyte to affect the performance of the battery body 100 .
  • the electrical glue 200 is a mounting component of the battery assembly, which can mount the battery body 100 on the mounting body, so as to fix the battery body 100 .
  • the electrical glue 200 has the characteristic of losing adhesion when electrified. Before electrification, the adhesive force is F1, which can meet the reliability requirements of fixing the battery body 100. After electrification, the adhesive force is greatly reduced to F2, and F2 is much smaller than F1.
  • the battery body 100 can be disassembled to achieve the effect of quick disassembly and stripping. What needs to be explained here is that for the working principle of the electrical glue 200 , reference may be made to related technologies, which will not be described in detail here.
  • the wrapping film 130 in the embodiment of the present application includes a conductive layer 131, and the electrical glue 200 is arranged between the conductive layer 131 and the battery body 100. Between the main bodies, the electrical glue 200 is electrically connected to the conductive layer 131 and the protection plate 120 respectively.
  • the conductive layer 131 may be an aluminum film layer, a steel-plastic film layer, or other polymer materials or composite materials. In this way, the protective plate 120 , the battery cell 110 , the conductive layer 131 and the electrical glue 200 together form a circuit.
  • the electrical adhesive 200 has a greater adhesive force, so that the battery body 100 can be firmly fixed on the installation body; greatly reduced, thereby losing the fixing effect between the battery body 100 and the installation body, and then the electrical glue 200 can be separated from at least one of the conductive layer 131 and the installation body, so that the battery body 100 can be removed from the installation body .
  • the electrical adhesive 200 can be an electrical single-sided adhesive or an electrical double-sided adhesive.
  • the electrical adhesive 200 can be fixed on the installation body.
  • the battery body 100 can pass through the electrical single-sided adhesive. It is detachably fixed on the installation main body to facilitate the disassembly and assembly of the battery body 100 .
  • the electrical adhesive 200 is an electrical double-sided adhesive
  • the electrical double-sided adhesive can be disassembled from the conductive layer 131 and the installation body, thereby facilitating the disassembly of the battery body 100 and the electrical adhesive 200 .
  • the wrapping film 130 can also include an anti-corrosion layer 133, which is arranged on the side of the conductive layer 131 close to the battery cell 110, and the anti-corrosion layer 133 acts as a resistance to the electrolyte to prevent The electrolytic solution corrodes the conductive layer 131 .
  • the anti-corrosion layer 133 may be a polypropylene layer.
  • the electrical glue 200 when the battery body 100 does not need to be disassembled, the electrical glue 200 can be in a power-off state; At least one of them is separated, so that the battery body 100 can be disassembled from the installation body, thereby facilitating repair, maintenance or replacement of the battery body 100 .
  • the electrical glue 200 in this application is convenient to disassemble and assemble the battery body 100, so that it can be reused, and it is not easy to cause deformation of the battery body 100, which ensures the normal use of the battery and improves the safety of the battery; and , Since no double-sided tape is used, there will be no residual double-sided tape on the installation body, and thus no difficulty in cleaning the double-sided tape.
  • the battery cell 110 in this application is provided with a battery positive ear 111 and a battery
  • the positive battery tab 111 , the negative battery tab 112 and the electrical glue tab 210 are electrically connected to the protective plate 120 respectively.
  • the electrical glue tab 210 is welded on the protective plate 120 in parallel with the battery positive tab 111 or the battery negative tab 112 .
  • the battery positive tab 111-conductive layer 131-electrical glue 200-electrical glue tab 210-protection plate 120 together form a circuit.
  • the electric glue 200 can be energized to make it lose its viscosity , so as to achieve the purpose of convenient disassembly; when the circuit is open, the electrical glue 200 can be de-energized to make it sticky, so that the battery body 100 can be fixed on the installation body.
  • the above method can solve the problem that conventional PET and double-sided adhesive fixing components are easily damaged and cannot be reused, and can reduce the overall thickness of the battery component.
  • the battery body 100 further includes a connector 140, the connector 140 is electrically connected to the protective plate 120, and at the same time, the connector 140 is used to electrically connect to the electronic device, through which the connector 140 can be connected to
  • the battery body 100 is electrically connected to the electronic device; in addition, the electrical glue 200 can also be powered by the electronic device.
  • the connector 140 includes a positive terminal 141 and a negative terminal 142 through which the electronic device can be electrically connected. Among them, the positive terminal 141, the battery positive tab 111, the conductive layer 131, the electrical glue 200, the electrical glue tab 210 and the negative terminal 142 form a first circuit P, through which the electrical glue 200 can be powered on or off.
  • the electrical glue 200 When the first circuit P is disconnected, the electrical glue 200 is not energized, and the electrical glue 200 is fixedly connected to the conductive layer 131 and the installation body respectively, so that the battery body 100 is fixed on the installation body through the electrical glue 200 .
  • the electrical glue 200 When the first circuit P is a path, the electrical glue 200 is energized, and at this time the electrical glue 200 can be separated from at least one of the conductive layer 131 and the installation body, thereby facilitating the removal of the battery body 100 from the installation body.
  • the battery pack further includes a first switch 310, the first switch 310 is electrically connected to the control element 400 of the electronic device, and the first switch 310 is set In the first circuit P.
  • the first switch 310 may be disposed on the protection board 120 and be controlled by an integrated circuit (Integrated Circuit, IC) controller of the protection board 120 . In a normal state, the first switch 310 is in an off state, that is, the first circuit P is disconnected.
  • IC integrated Circuit
  • the control element 400 of the electronic device sends a signal to the IC controller of the protection board 120 to disassemble the battery body 100, and the protection board 120 After receiving the signal, the IC controller combines the first switch 310 to connect the first circuit P and supply power to the first circuit P, so that the electrical glue 200 is energized and loses its viscosity, so as to facilitate the disassembly of the battery body 100 .
  • the first switch 310 may be a MOS switch.
  • the time for the first circuit P to be turned on may also be set, for example, 10 seconds to 20 seconds. In this path, the electronic device supplies power to the first circuit P for a period of time (eg, 10 seconds to 20 seconds, etc.) and then automatically cuts off the power.
  • the battery body 100 can supply power to the electrical glue 200 through circuit logic design, so that the electrical glue 200 can be energized and lose stickiness.
  • the circuit logic design can separate the scene of charging and the scene of dismantling the battery, so as to avoid accidental dismantling of the battery body 100 during charging due to conflicts.
  • the circuit logic will be described in detail below.
  • the battery body 100 further includes a connector 140, the connector 140 is electrically connected to the protective plate 120, and at the same time, the connector 140 is also used to electrically connect to the electronic device, and the connector 140 connects The battery body 100 is electrically connected to the electronic device.
  • the connector 140 includes a positive terminal 141 and a negative terminal 142 through which the electronic device can be electrically connected.
  • the positive terminal 141, the battery positive tab 111, the conductive layer 131, the electrical glue 200, the electrical glue tab 210 and the negative terminal 142 jointly form the second circuit Q
  • the negative tab 112 and the negative terminal 142 form a third circuit R together.
  • the on-off conditions of the second circuit Q and the third circuit R can be controlled to achieve different purposes.
  • control element 400 controls the combination of the second switch 320 so that the second circuit Q is turned on; in the case of charging, the control component 400 controls the combination of the third switch 330 so that the third circuit R connected.
  • the battery pack further includes a second switch 320 and a third switch 330, and the second switch 320 and the third switch 330 are respectively connected to the electronic device
  • the control element 400 is electrically connected, and the second switch 320 is set in the second circuit Q, and the third switch 330 is set in the third circuit R.
  • the second switch 320 and the third switch 330 may be respectively disposed on the protection board 120 and controlled by the IC controller of the protection board 120 . In a normal state, both the second switch 320 and the third switch 330 are in an off state, that is, the second circuit Q and the third circuit R are both open circuits.
  • the control element 400 of the electronic device sends a signal to the IC controller of the protection board 120 to disassemble the battery body 100, and the IC controller of the protection board 120 uses the signal after receiving the signal.
  • the second switch 320 is combined to turn on the second circuit Q and supply power to the second circuit Q. At this time, it can be powered by a charger or an external power supply, or it can be powered by a battery, so that the electrical glue 200 is energized and loses its viscosity for convenience. Disassemble the battery body 100 .
  • the second switch 320 may be a MOS switch.
  • the time for the second circuit Q to be turned on can also be set, for example, 10 seconds to 20 seconds.
  • the battery body 100 supplies power to the second circuit Q for a period of time (eg, 10 seconds to 20 seconds, etc.) and then automatically cuts off the power.
  • both the second switch 320 and the third switch 330 are in the off state, that is, both the second circuit Q and the third circuit R are in the off state, and when the electronic device needs to be charged, the electronic
  • the control element 400 of the device sends a charging signal to the IC controller of the protection board 120. After receiving the signal, the IC controller of the protection board 120 combines the third switch 330 to turn on the third circuit R.
  • the battery body 100 is charged.
  • the third switch 330 may be a MOS switch.
  • the wrapping film 130 further includes a protective layer 132 , and the protective layer 132 is disposed on a side of the conductive layer 131 away from the battery cell 110 .
  • the protective layer 132 may be a nylon layer, which covers the conductive layer 131, so as to protect the conductive layer 131 from being scratched.
  • a shelter space 1321 is formed on the protective layer 132 , and the electrical glue 200 is placed in the shelter space 1321 and bonded to the conductive layer 131 .
  • the escape space 1321 may be an escape groove, through which the conductive layer 131 can be at least partially exposed, so that the electrical glue 200 can be attached and electrically connected to the conductive layer 131 .
  • the protective layer 132 may not exist on the conductive layer 131 .
  • the protective layer 132 corresponding to the back of the battery body 100 is removed to expose the conductive layer 131 .
  • the electrical glue 200 can be directly attached to the conductive layer 131 .
  • the protective layer 132 is removed in the process of wrapping the battery cell 110 with the wrapping film 130 and then the electrical adhesive 200 is attached, various dimensional tolerances will cause the electrical adhesive 200 to not match the exposed conductive layer 131, affecting the yield of the production line.
  • at least part of the protective layer 132 can also be removed after the finished battery cell 110 is made by physical or chemical process. The specific method is as follows:
  • a physical radium engraving process set a laser with a suitable intensity, and at least partially evaporate the protective layer 132 on the surface of the conductive layer 131 through light energy to expose the conductive layer 131, and use a dust-free cloth to wipe the conductive layer 131. surface, and then attach electrical glue 200.
  • This method has high requirements on laser precision, and can not cause surface damage to the conductive layer 131 while removing at least part of the protective layer 132 , and the cost is relatively high.
  • At least part of the protection layer 132 can be removed by the above chemical or physical methods. As shown in FIG. 5 , the shelter space 1321 is formed after part is removed, or as shown in FIG. 7 , all of it is removed so that the conductive layer 131 is completely exposed.
  • the electrical glue 200 can also be disposed on the side of the protective layer 132 away from the conductive layer 131 , and the electrical glue 200 is electrically connected to the conductive layer 131 , as shown in FIG. 8 .
  • a plurality of electrical glue tabs 210 may be drawn out on the electrical glue 200 for electrification and debonding. In this way, there are many electrical glue lugs 210 drawn from the electrical glue 200, and the protective plate 120 needs to reserve a place for welding.
  • the shape of the electrical glue 200 is adapted to the shape of the shelter space 1321, and the shape of the shelter space 1321 can be optimized according to the compatible design of the actual battery compartment structure.
  • the area ratio of the shelter space 1321 to the protection layer 132 is 1/3 to 1/2, so as to expose a corresponding area of the conductive layer 131 .
  • it can also be other special shapes, such as U-shaped or back-shaped.
  • the shape of the electrical glue 200 can be a conventional rectangle or a special shape, such as a U shape or a round shape.
  • the font can be a single whole.
  • the shape of the electrical glue 200 can be a conventional rectangle or a special shape, but it needs to be a single whole. Loss of adhesion effect, for a single integral electrical adhesive 200, at least 2pcs tabs (1pc positive pole/1pc negative pole) must be drawn out, and the electrical adhesive tabs 210 must be distributed on the upper and lower sides of the electrical adhesive 200 to achieve electrification and adhesive loss Effect. Assuming that the local avoidance (when forming the avoidance space 1321) results in the number of independent adhesive layers being A, the tabs that need to be drawn out should be 2A, and too many tabs connected to the protection board 120 will cause tab layout and routing, Risks such as increasing the width and thickness of the protective plate 120 and poor reliability. Therefore, it is most suitable for the electrical glue 200 to be kept as a single whole.
  • the conductive layer 131 is in full contact with the electrical glue 200 , which can greatly improve the flow-through effect and reduce the electrical glue tabs 210 .
  • the electrical glue tab 210 when the wrapping film 130 is wrapped on the outside of the battery cell 110, the electrical glue tab 210 is misaligned with the battery positive tab 111 and the battery negative tab 112 respectively, and the misaligned electrical glue
  • the tabs 210 can be directly welded to the protective plate 120 by spot welding.
  • the electrical glue tab 210 is overlapped with the battery positive tab 111 or the battery negative tab 112 . Welded together by welding technology, and then welded to the protective plate 120. This method will increase the thickness of the tabs after welding, which will weaken the bending performance and reduce the reliability to a certain extent. Nevertheless, this method can also meet actual needs and can also be used as an alternative.
  • the electrical glue 200 may further include a plurality of electrical glue tabs 210 located at the edge of the electrical glue 200 , and the plurality of electrical glue tabs 210 are electrically connected to the protection board 120 respectively.
  • the electrical glue positive tab and the electrical glue negative tab are provided on the edge area of the electrical glue 200 , and are electrically connected to the protective plate 120 through the electrical glue positive pole ear and the electrical glue negative pole ear.
  • the embodiment of the present application does not limit the number and form of the electrical glue tabs 210 , the size and form of the electrical glue 200 , and the like.
  • the electrical adhesive 200 is an electrical double-sided adhesive
  • the electrical double-sided adhesive includes a first peeling adhesive layer 220 and a second peeling adhesive layer 230 that are stacked, and the electrical adhesive tab 210 is inserted into the second peeling adhesive layer.
  • the first peeling adhesive layer 220 and the second peeling adhesive layer 230 are integrally arranged.
  • the electrical glue 200 is designed in one piece, and the electrical glue tab 210 is inserted into the first peeling adhesive layer 220 and the second peeling adhesive layer 230, and is stacked up and down.
  • the provided first peeling adhesive layer 220 and the second peeling adhesive layer 230 are fixed.
  • the electrical glue tab 210 may be a sheet-shaped convex aluminum tab.
  • the size of the electrical glue tab 210 is based on the optimum size obtained through experiments.
  • the one-piece design of the electrical adhesive 200 can only replace the electrical adhesive 200 in the scene where the battery body 100 is disassembled and reused, and there is no need to attach the electrical adhesive tab 210 to the electrical adhesive 200 separately, thereby Improve production line yield and efficiency.
  • the embodiment of the present application also discloses an electronic device.
  • the disclosed electronic device includes a device body and the battery assembly in the above embodiment; the device body includes a battery compartment, which is the above-mentioned installation body, and the battery component is arranged in the , and the battery assembly is detachably connected to the battery compartment through electrical glue 200 .
  • the electrical adhesive 200 has the characteristic of losing viscosity when it is energized, and can normally meet the fixing reliability requirements of the battery body 100 before energization.
  • Power-on treatment can realize fast and non-destructive disassembly without damaging the battery body 100 and electronic equipment; the good battery body 100 after disassembly will not be deformed, and can be reused in the production line and after sales, which can avoid waste of resources and save costs; this design can By canceling the PET and double-sided tape that the battery body 100 is in contact with the battery compartment, at least part of the protective layer 132 can be removed, so that the conductive layer 131 is in direct contact with the electrical glue 200 to form an electrical circuit, and the thickness of the battery body 100 can be reduced by 0.145 mm (millimeter) comprehensively.
  • the thickness of the two layers of PET is 0.12mm and the thickness of the protective layer 132 is 0.025mm
  • the thickness of the electronic device can further reduce the weight and thickness of the electronic device, improve the user's grip experience, or improve the battery capacity under the same battery thickness. Capacity, increase the battery life of electronic equipment.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biophysics (AREA)
  • Computer Hardware Design (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请公开了一种电池组件及电子设备，涉及电子产品领域。一种电池组件包括电池本体，所述电池本体包括电芯、与电芯电连接的保护板以及包裹于电芯外侧的包裹膜，所述包裹膜包括导电层；电气胶，所述电气胶设置于所述导电层与安装主体之间，所述电气胶与所述导电层及所述保护板分别电连接；所述保护板、所述电芯、所述导电层和所述电气胶形成电路，在所述电路为断路的情况下，所述电气胶与所述导电层和所述安装主体分别固定连接，在所述电路为通路的情况下，所述电气胶能够与所述导电层及所述安装主体中的至少一者分离。

Description

电池组件及电子设备
相关申请的交叉引用
本申请主张在2021年06月11日在中国提交的中国专利申请No.202110655397.8的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于电子产品技术领域，具体涉及一种电池组件及电子设备。
背景技术
目前，手机、平板和个人计算机(Personal Computer，PC)等电子设备中普遍采用粘接的方式将电池固定在电池仓中，即，电池的底面和电池仓的表面之间设置双面胶和易拆聚对苯二甲酸乙二酯(Polyethylene Terephthalate，PET)，达到固定电池盒维修方便拆卸的目的，再者还可以采用直接用双面胶固定无法拆卸的方式。然而，易拆PET方式成本相对较高，且无法重复利用，且在拆卸过程中容易造成电池变形，影响电池使用甚至可能带来安全问题；另外，易拆PET的方式在拆卸拉胶的过程中，双面胶容易分层形成残胶留在电池仓内，造成清除困难的问题。
发明内容
本申请实施例的目的是提供一种电池组件及电子设备，能够解决上述至少一个问题。
为了解决上述技术问题，本申请是这样实现的：
本申请实施例提供了一种电池组件，该电池组件包括：
电池本体，所述电池本体包括电芯、与电芯电连接的保护板以及包裹于电芯外侧的包裹膜，所述包裹膜包括导电层；
电气胶，所述电气胶设置于所述导电层与安装主体之间，所述电气胶与所述导电层及所述保护板分别电连接；
所述保护板、所述电芯、所述导电层和所述电气胶形成电路，在所述电路为断路的情况下，所述电气胶与所述导电层和所述安装主体分别固定连接，在所述电路为通路的情况下，所述电气胶与所述导电层及所述安装主体中的至少一者分离。
本申请实施例还提供了一种电子设备，该电子设备包括设备主体和电池组件，设备主体包括电池仓，电池仓为上述实施例中的安装主体，电池组件设置于电池仓，且电池组件与电池仓之间通过电气胶可拆卸连接。
本申请实施例中，电池本体外侧设有包裹膜，包裹膜包括导电层，电气胶设置在导电层与安装主体(如，电池仓等)之间，另外，电气胶还与导电层和电池组件的保护板电连接，如此，保护板、电芯、导电层和电气胶可以形成一供电的电路，在该电路为通路时，可以为电气胶供电，在该电路为断路时，无法对电气胶供电。基于电气胶自身特性，在通电时，电气胶可以与导电层及安装主体中的至少一者分离，在未通电时，电气胶可以将导电层和安装主体固定在一起。由此，在不需要拆卸电池本体时，可以使电气胶处于断电状态，当需要拆卸电池本体时，可以对电气胶通电，从而使电气胶与导电层及安装主体中的至少一者分离，以便于将电池本体从安装主体上拆下，进而方便电池本体的维修、维护或更换。相比于常规的PET方式，本申请中的电气胶方便拆装电池本体，从而可以重复利用，且不易造成电池本体变形，保证了电池的正常使用，提高了电池的安全性；并且，由于不使用双面胶，从而不会造成安装主体上残留双面胶，进而不会造成双面胶清理困难的问题。
附图说明
图1为本申请实施例公开的电池组件的示意图；
图2为本申请实施例公开的第一种形式的电池组件的组装示意图；
图3为本申请实施例公开的第二种形式的电池组件的组装示意图；
图4为本申请实施例公开的第三种形式的电池组件的组装示意图；
图5为本申请实施例公开的包裹膜的第一种形式的断面示意图；
图6为本申请实施例公开的包裹膜的第二种形式的断面示意图；
图7为本申请实施例公开的电池组件的第一种形式的断面示意图；
图8为本申请实施例公开的电池组件的第二种形式的断面示意图；
图9为本申请实施例公开的采用第一电路为电气胶供电的示意图；
图10为本申请实施例公开的采用第二电路为电气胶供电、且采用第三电路为电池本体充电的示意图；
图11为本申请实施例公开的电气胶的纵切示意图；
图12为本申请实施例公开的电气胶的横切示意图；
图13为本申请实施例公开的电气胶从未通电切换至通电的示意图；
图14为本申请实施例公开的第一开关控制第一电路通断的示意图；
图15为本申请实施例公开的拆卸电池的流程图；
图16为本申请实施例公开的第二开关控制第二电路通断，以及第三开关控制第三电路通断的示意图；
图17为本申请实施例公开的拆卸电池和充电的流程图；
图18为本申请实施例公开的第一开关、第二开关和第三开关的控制原理图。
附图标记说明：
100-电池本体；110-电芯；111-电池正极耳；112-电池负极耳；120-保护板；130-包裹膜；131-导电层；132-防护层；1321-避位空间；133-防腐层；140-连接器；141-正极端子；142-负极端子；
200-电气胶；210-电气胶极耳；220-第一剥离粘接剂层；230-第二剥离粘接剂层；
310-第一开关；320-第二开关；330-第三开关；
400-控制元件；
P-第一电路；Q-第二电路；R-第三电路。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”等所区分的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
下面结合附图，通过具体的实施例及其应用场景对本申请实施例进行详细地说明。
本申请实施例公开了一种电池组件，所公开的电池组件包括电池本体100和电气胶200。
参考图1至图4，电池本体100包括电芯110、保护板120和包裹膜130，其中，保护板120与电芯110电连接，包裹膜130包裹在电芯110的外侧。可选地，保护板120设置在电芯110的一端。保护板120为电池本体100的一种保护构件，通常情况下，保护板120包括高速开关和集成电路，高速开关一般由金属氧化物半导体(Metal-Oxide-Semiconductor，MOS)管串联在主要放电回路中，用于执行保护动作，集成电路由精确的比较器组成，通过监视电池本体100的电压差等方式来控制高速开关。除此以外，保护板120 上还设有电阻、电容、辅助电流保险丝、正温度系数元器件、存储器等。通过保护板120可以对电池本体100进行保护，例如，过充保护、过放保护、过流保护、温度保护等。因此，通过保护板120可以实时对电池本体100进行保护，以保证电池本体100在正常范围内工作。包裹膜130包裹在电芯110的外侧，从而既可以有效防止电解液泄漏，又可以防止外界水分、空气进入，并与电解液反应而影响电池本体100性能。
电气胶200为电池组件的一种安装构件，其可以将电池本体100安装至安装主体上，以实现对电池本体100的固定。电气胶200具有通电失粘的特性，在通电前，粘结力为F1，其可以满足固定电池本体100的可靠性要求，在通电后，粘结力大幅降低至F2，F2远小于F1，从而可以将电池本体100拆下，达到快速拆卸和剥离的效果。此处需要说明的是，有关电气胶200的工作原理可参考相关技术，此处不作详细阐述。
参考图5至图8，为了通过电气胶200将电池本体100进行固定，以及方便于拆卸电池本体100，本申请实施例中的包裹膜130包括导电层131，电气胶200设置于导电层131与安装主体之间，且电气胶200与导电层131和保护板120分别电连接。可选地，导电层131可以是铝膜层、钢塑膜层或其他高分子材料或复合材料等。如此，保护板120、电芯110、导电层131和电气胶200共同形成一电路。在上述电路为断路的情况下，电气胶200具有较大的粘结力，从而可以将电池本体100牢牢固定在安装主体上；在上述电路为通路的情况下，电气胶200通电粘结力大幅减小，从而失去对电池本体100与安装主体之间的固定作用，进而使电气胶200能够与导电层131及安装主体中的至少一者分离，以便于从安装主体上拆下电池本体100。
可选地，电气胶200可以为电气单面胶或电气双面胶，当电气胶200为电气单面胶时，其可以固定在安装主体上，此时，电池本体100可以通过电气单面胶可拆卸地固定在安装主体上，便于电池本体100的拆装。当电气胶200为电气双面胶时，电气双面胶可以与导电层131和安装主体分别拆卸， 从而便于电池本体100以及电气胶200的拆卸。
另外，在一些可选的实施例中，包裹膜130还可以包括防腐层133，防腐层133设置在导电层131的靠近电芯110的一侧，通过防腐层133起耐电解液作用，以防止电解液腐蚀导电层131。可选地，防腐层133可以是聚丙烯层。
基于上述设置，在不需要拆卸电池本体100时，可以使电气胶200处于断电状态，当需要拆卸电池本体100时，可以对电气胶200通电，从而使电气胶200与导电层131及安装主体中的至少一者分离，以便于将电池本体100从安装主体上拆下，进而方便电池本体100的维修、维护或更换。相比于常规的PET方式，本申请中的电气胶200方便拆装电池本体100，从而可以重复利用，且不易造成电池本体100变形，保证了电池的正常使用，提高了电池的安全性；并且，由于不使用双面胶，从而不会造成安装主体上残留双面胶，进而不会造成双面胶清理困难的问题。
参考图1至图4，为了实现电芯110与保护板120电连接，以及电气胶200与保护板120的电连接，以形成回路，本申请中的电芯110设有电池正极耳111和电池负极耳112，电气胶200包括电气胶极耳210。在实际连接时，将电池正极耳111、电池负极耳112和电气胶极耳210分别与保护板120电连接。可选地，将电气胶极耳210与电池正极耳111或电池负极耳112并联焊接在保护板120上。基于上述设置，使得电池正极耳111-导电层131-电气胶200-电气胶极耳210-保护板120共同形成一电路，在该电路为通路时，可以使电气胶200通电，使其失去粘性，从而达到便捷拆卸的目的；在该电路为断路时，可以使电气胶200未通电，使其具有粘性，从而可以将电池本体100固定在安装主体上。上述方式可以解决常规PET和双面胶固定组件易损坏、无法重复使用的问题，并且可以减小电池组件的整体厚度。
参考图9，在一些实施例中，电池本体100还包括连接器140，连接器140与保护板120电连接，与此同时，连接器140用于与电子设备电连接， 通过连接器140可以将电池本体100与电子设备电连接；除此以外，还可以通过电子设备对电气胶200供电。连接器140包括正极端子141和负极端子142，通过正极端子141和负极端子142可以与电子设备电连接。其中，正极端子141、电池正极耳111、导电层131、电气胶200、电气胶极耳210和负极端子142形成第一电路P，通过第一电路P可以实现电气胶200的通电或断电。在第一电路P为断路的情况下，电气胶200未通电，此时电气胶200与导电层131及安装主体分别固定连接，从而通过电气胶200将电池本体100固定在安装主体上。在第一电路P为通路的情况下，电气胶200通电，此时电气胶200能够与导电层131及安装主体中的至少一者分离，从而便于电池本体100从安装主体上拆下。
参考图14、图15和图18，为了控制上述第一电路P的通断，电池组件还包括第一开关310，第一开关310与电子设备的控制元件400电连接，且第一开关310设置于第一电路P中。可选地，第一开关310可以设置在保护板120上，并受到保护板120的集成电路(Integrated Circuit，IC)控制器的控制作用。通常状态下，第一开关310处于断开状态，即，第一电路P为断路。当在售后维修或其他需要拆卸电池本体100的场景中，电子设备连接充电器或外接电源，电子设备的控制元件400发出拆卸电池本体100的信号至保护板120的IC控制器，保护板120的IC控制器收到信号后使第一开关310结合，使第一电路P接通，向第一电路P供电，从而使电气胶200通电而失去粘性，以方便拆卸电池本体100。可选地，第一开关310可以是MOS开关。另外，还可以设置第一电路P接通的时间，例如，10秒至20秒。在此通路中，电子设备向第一电路P持续供电一段时间(如，10秒至20秒等)后自动断电。
考虑到部分拆卸电池本体100的场景下没有充电器和外接电源，基于此，可以通过电路逻辑设计，使电池本体100向电气胶200供电，以达到电气胶200通电失粘的目的。
本申请实施例中，电路逻辑设计可以分离开充电场景和拆卸电池场景，以避免冲突导致充电时误拆电池本体100。下面将对电路逻辑进行详细阐述。
参考图10，在其他实施例中，电池本体100还包括连接器140，连接器140与保护板120电连接，与此同时，连接器140还用于与电子设备电连接，通过连接器140将电池本体100与电子设备电连接。连接器140包括正极端子141和负极端子142，通过正极端子141和负极端子142可以与电子设备电连接。其中，正极端子141、电池正极耳111、导电层131、电气胶200、电气胶极耳210和负极端子142共同形成第二电路Q，且正极端子141、电池正极耳111、电芯110、电池负极耳112和负极端子142共同形成第三电路R。本申请实施例中可以对第二电路Q与第三电路R的通断情况进行控制，以达到不同的目的。
在拆卸电池本体100的情况下，控制元件400控制第二开关320结合，以使第二电路Q接通；在充电的情况下，控制元件400控制第三开关330结合，以使第三电路R接通。
参考图16至图18，为了控制上述第二电路Q和第三电路R的通断，电池组件还包括第二开关320和第三开关330，第二开关320和第三开关330分别与电子设备的控制元件400电连接，且第二开关320设置于第二电路Q中，第三开关330设置于第三电路R中。可选地，第二开关320和第三开关330分别可以设置在保护板120上，并受到保护板120的IC控制器控制。通常状态下，第二开关320和第三开关330均处于断开状态，即，第二电路Q和第三电路R均为断路。当在售后维修或其他需要拆卸电池本体100的场景中，通过电子设备的控制元件400发出拆卸电池本体100的信号至保护板120的IC控制器，保护板120的IC控制器收到信号后使第二开关320结合，使第二电路Q接通，向第二电路Q供电，此时可以是充电器或外界电源供电，也可以是电池供电，从而使电气胶200通电而失去粘性，以方便拆卸电池本体100。可选地，第二开关320可以是MOS开关。另外，还可以设置第二电 路Q接通的时间，例如，10秒至20秒。在此通路中，电池本体100向第二电路Q持续供电一段时间(如，10秒至20秒等)后自动断电。
基于上述设置，在正常情况下，第二开关320和第三开关330均处于断开状态，即，第二电路Q和第三电路R均为断路状态，当需要对电子设备充电时，通过电子设备的控制元件400发出充电的信号至保护板120的IC控制器，保护板120的IC控制器接收到信号后使第三开关330结合，使第三电路R接通，通过充电器或外接电源对电池本体100进行充电。可选地，第三开关330可以是MOS开关。
继续参考图5至图8，在一些实施例中，包裹膜130还包括防护层132，防护层132设置于导电层131的背离电芯110的一侧。可选地，防护层132可以是尼龙层，其覆盖导电层131，从而保护导电层131不被刮伤。为了将电气胶200与导电层131贴合并电连接，本申请实施例中在防护层132上形成有避位空间1321，电气胶200设置于避位空间1321中，并与导电层131贴合。可选地，避位空间1321可以是避位槽，通过避位槽的设置可以使导电层131至少部分外露，以便于电气胶200与导电层131贴合且电连接。
在其他实施例中，导电层131上还可以不存在防护层132。参考图7，在导电层131压延成型过程中取消对应电池本体100背部的防护层132，露出导电层131，此时，可以直接将电气胶200贴附在导电层131上。
考虑到包裹膜130包裹电芯110的工艺流程中去除至少部分防护层132再贴附电气胶200，各种尺寸公差会导致电气胶200与露出的导电层131不匹配，影响产线良率的问题，本申请实施例中还可以通过物理或化学工艺方式在成品的电芯110做出来之后再去除至少部分防护层132。具体方式如下：
通过化学刻蚀工艺，在成品的电芯110的背面的包裹膜130区域，涂抹配置溶解防护层132的药水，一段时间后待药水溶解至少部分防护层132而露出导电层131时，使用无尘布擦净防护层132表面，再贴附电气胶200。此方式可以同时处理大批量电芯110，且成本相对较低。
除此以外，还可以通过物理镭雕工艺，设定合适强度的激光，通过光能使导电层131表面的防护层132至少部分蒸发而露出导电层131，并使用无尘布擦净导电层131表面，再贴附电气胶200。此种方式对激光精度要求较高，且在去除至少部分防护层132的同时不能对导电层131造成表面损伤，且成本相对较高。
通过上述化学或物理方式，均可以去除至少部分防护层132。如图5所示，去除部分后形成避位空间1321，或者如图7所示，全部去除，以使导电层131全部外露。
除上述方式之外，电气胶200还可以设置在防护层132的背离导电层131的一侧，且电气胶200与导电层131电连接，如图8所示。可选地，可以在电气胶200上引出多个电气胶极耳210进行通电失粘。此种方式中电气胶200上引出的电气胶极耳210较多，保护板120需要预留位置进行焊接。
进一步地，电气胶200的形状与避位空间1321的形状相适应，且避位空间1321的形状可以根据实际电池仓的结构兼容设计进行优化。在一些实施例中，避位空间1321与防护层132的面积之比为1/3至1/2，以露出对应面积的导电层131。当然，还可以是其他异形，如，U字形或回字形等。
基于上述设置，在防护层132的避位空间1321处，贴附对应形状的电气胶200，根据避位空间1321的形状，电气胶200的形状可以是常规矩形或异形，如，U字形或回字形，为单一整体即可，将包裹膜130包裹电芯110时，确保电气胶200能够贴附在电池本体100的背面。
本申请实施例中，电气胶200形状可以是常规矩形或者异形，但需要为单一整体，其原因为：电气胶200需要纵向通流，电子带动电气胶200的离子移动，界面发生变化方可达到失粘效果，对于单一整体的电气胶200来说，需至少引出2pcs极耳(1pc正极/1pc负极)，且电气胶极耳210需分布在电气胶200的上下两面，方可达到通电失粘的效果。假设局部避空(在形成避位空间1321时)导致独立的胶层数量为A，需要引出的极耳应为2A，过多的 极耳接入保护板120会带来极耳布局走线、增加保护板120宽度和厚度、可靠性差等风险。因此，电气胶200保持单一整体最为适合。
基于上述分析可知，本申请实施例中去除防护膜后，使导电层131与电气胶200整面接触，在极大提升通流效果的同时，还可以减少电气胶极耳210。
参考图3和图4，在一些实施例中，包裹膜130包裹于电芯110外侧的情况下，电气胶极耳210与电池正极耳111及电池负极耳112分别错位设置，错位设置的电气胶极耳210可以直接采用点焊技术焊接在保护板120上。
参考图2，在其他实施例中，电气胶极耳210与电池正极耳111或电池负极耳112重叠设置，重叠设置后，电气胶极耳210可以与电池正极耳111或电池负极耳112采用点焊技术焊接在一起，再焊接至保护板120。此种方式会使得极耳焊接合并后的厚度增加，使得弯折性能减弱，在一定程度上降低可靠性。尽管如此，该种方式同样可以满足实际需求，也可以作为备选方式。
继续参考图4，在另外一些实施例中，电气胶200还可以包括多个位于电气胶200边缘区域的电气胶极耳210，多个电气胶极耳210分别与保护板120电连接。例如，电气胶200的边缘区域设置电气胶正极耳和电气胶负极耳，通过电气胶正极耳和电气胶负极耳与保护板120电连接。当然，本申请实施例中不限制电气胶极耳210的数量、形式、电气胶200的尺寸形式等。
在一些实施例中，电气胶200为电气双面胶，电气双面胶包括层叠设置的第一剥离粘接剂层220和第二剥离粘接剂层230，电气胶极耳210插设于第一剥离粘接剂层220和第二剥离粘接剂层230之间，第一剥离粘接剂层220、第二剥离粘接剂层230与电气胶极耳210三者一体设置。
参考图11至图13，本申请实施例中，电气胶200为一体式设计，在第一剥离粘接剂层220和第二剥离粘接剂层230中插入电气胶极耳210，通过上下层叠设置的第一剥离粘接剂层220和第二剥离粘接剂层230进行固定。可选地，电气胶极耳210可以是片状凸形的铝极耳。当电气胶极耳210的尺 寸过大时，会阻碍通电状态下的电气剥离剂流动通道；当电气胶极耳210的尺寸过小时，会降低失粘效率。本申请实施例中，电气胶极耳210的尺寸以实验获取的最佳尺寸为准。一体式设计的电气胶200可以在拆卸电池本体100并复用电池本体100的场景中，仅需要更换电气胶200即可，不需要再单独贴附电气胶极耳210至电气胶200上，从而提升了产线良率和效率。
本申请实施例还公开了一种电子设备，所公开的电子设备包括设备主体和上述实施例中的电池组件；设备主体包括电池仓，该电池仓即为上述安装主体，电池组件设置在电池仓中，且电池组件与电池仓之间通过电气胶200可拆卸连接。
综上所述，本申请实施例中，电气胶200具有通电失粘特性，在通电前可以正常满足电池本体100固定可靠性要求，在售后等需要拆卸电池本体100的场景中，对电气胶200通电处理，可以实现快速无损拆卸，不会损坏电池本体100和电子设备；拆卸后的良品电池本体100不会变形，产线和售后均可重复利用，可以避免资源浪费、节约成本；此设计可以取消电池本体100与安装电池仓接触的PET和双面胶，可以取消至少部分防护层132，使导电层131与电气胶200直接接触，形成通电回路，综合可降低电池本体100厚度0.145毫米(millimeter，mm)(即，两层PET的厚度0.12mm和防护层132的厚度0.025mm)，进一步可以降低电子设备的重量和厚度，提升用户的握持体验，或在相同电池厚度的情况下提升电池容量，增加电子设备的续航。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (12)

  1. 一种电池组件，包括：
    电池本体(100)，所述电池本体(100)包括电芯(110)、与电芯(110)电连接的保护板(120)以及包裹于电芯(110)外侧的包裹膜(130)，所述包裹膜(130)包括导电层(131)；
    电气胶(200)，所述电气胶(200)设置于所述导电层(131)与安装主体之间，所述电气胶(200)与所述导电层(131)及所述保护板(120)分别电连接；
    所述保护板(120)、所述电芯(110)、所述导电层(131)和所述电气胶(200)形成电路，在所述电路为断路的情况下，所述电气胶(200)与所述导电层(131)和所述安装主体分别固定连接，在所述电路为通路的情况下，所述电气胶(200)与所述导电层(131)及所述安装主体中的至少一者分离。
  2. 根据权利要求1所述的电池组件，其中，所述电芯(110)设有电池正极耳(111)和电池负极耳(112)，所述电气胶(200)包括电气胶极耳(210)，所述电池正极耳(111)、所述电池负极耳(112)和所述电气胶极耳(210)分别与所述保护板(120)电连接。
  3. 根据权利要求2所述的电池组件，其中，所述电池本体(100)还包括与所述保护板(120)电连接的连接器(140)，所述连接器(140)包括正极端子(141)和负极端子(142)，所述正极端子(141)、所述电池正极耳(111)、所述导电层(131)、所述电气胶(200)、所述电气胶极耳(210)和所述负极端子(142)形成第一电路(P)；
    在所述第一电路(P)为断路的情况下，所述电气胶(200)与所述导电 层(131)及所述安装主体分别固定连接，在所述第一电路(P)为通路的情况下，所述电气胶(200)与所述导电层(131)及所述安装主体中的至少一者分离。
  4. 根据权利要求2所述的电池组件，其中，所述电池本体(100)还包括与所述保护板(120)电连接的连接器(140)，所述连接器(140)包括正极端子(141)和负极端子(142)，所述正极端子(141)、所述电池正极耳(111)、所述导电层(131)、所述电气胶(200)、所述电气胶极耳(210)和所述负极端子(142)形成第二电路(Q)，且所述正极端子(141)、所述电池正极耳(111)、所述电芯(110)、所述电池负极耳(112)和所述负极端子(142)形成第三电路(R)；
    在所述第二电路(Q)为通路、所述第三电路(R)为断路的情况下，所述电气胶(200)与所述导电层(131)及所述安装主体中的至少一者分离，在所述第二电路(Q)为断路、所述第三电路(R)为通路的情况下，所述电池组件能够进行充电。
  5. 根据权利要求1所述的电池组件，其中，所述包裹膜(130)还包括设置于所述导电层(131)的背离所述电芯(110)一侧的防护层(132)；
    所述防护层(132)形成有避位空间(1321)，所述电气胶(200)设置于所述避位空间(1321)，并与所述导电层(131)贴合；或者，所述电气胶(200)设置于所述防护层(132)的背离所述导电层(131)的一侧，且所述电气胶(200)与所述导电层(131)电连接。
  6. 根据权利要求5所述的电池组件，其中，所述避位空间(1321)与所述防护层(132)的面积之比为1/3至1/2；
    和/或，所述电气胶(200)的形状与所述避位空间(1321)的形状相适 应。
  7. 根据权利要求2所述的电池组件，其中，在所述包裹膜(130)包裹于所述电芯(110)外侧的情况下，所述电气胶极耳(210)与所述电池正极耳(111)及所述电池负极耳(112)分别错位设置，或者，所述电气胶极耳(210)与所述电池正极耳(111)或所述电池负极耳(112)重叠设置。
  8. 根据权利要求7所述的电池组件，其中，所述电气胶(200)包括多个位于所述电气胶(200)边缘区域的所述电气胶极耳(210)，多个所述电气胶极耳(210)分别与所述保护板(120)电连接。
  9. 根据权利要求2所述的电池组件，其中，所述电气胶(200)为电气双面胶，所述电气双面胶包括层叠设置的第一剥离粘接剂层(220)和第二剥离粘接剂层(230)，所述电气胶极耳(210)插设于所述第一剥离粘接剂层(220)与所述第二剥离粘接剂层(230)之间。
  10. 根据权利要求3所述的电池组件，其中，所述电池组件还包括与电子设备的控制元件(400)电连接的第一开关(310)，所述第一开关(310)设置于所述第一电路(P)中；
    在拆卸所述电池本体(100)的情况下，所述控制元件(400)控制所述第一开关(310)结合，以使所述第一电路(P)接通。
  11. 根据权利要求4所述的电池组件，其中，所述电池组件还包括分别与电子设备的控制元件(400)电连接的第二开关(320)和第三开关(330)，所述第二开关(320)设置于所述第二电路(Q)中，所述第三开关(330)设置于所述第三电路(R)中；
    在拆卸所述电池本体(100)的情况下，所述控制元件(400)控制所述第二开关(320)结合，以使所述第二电路(Q)接通；
    在充电的情况下，所述控制元件(400)控制所述第三开关(330)结合，以使所述第三电路(R)接通。
  12. 一种电子设备，包括设备主体和权利要求1-11中任意一项所述的电池组件；
    所述设备主体包括电池仓，所述电池仓为所述安装主体，所述电池组件设置于所述电池仓，且所述电池组件与所述电池仓之间通过所述电气胶(200)可拆卸连接。
PCT/CN2022/097934 2021-06-11 2022-06-09 电池组件及电子设备 WO2022258027A1 (zh)

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