WO2022258026A1 - 电池组件及电子设备 - Google Patents

电池组件及电子设备 Download PDF

Info

Publication number
WO2022258026A1
WO2022258026A1 PCT/CN2022/097933 CN2022097933W WO2022258026A1 WO 2022258026 A1 WO2022258026 A1 WO 2022258026A1 CN 2022097933 W CN2022097933 W CN 2022097933W WO 2022258026 A1 WO2022258026 A1 WO 2022258026A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
electrical
circuit
tab
conductive layer
Prior art date
Application number
PCT/CN2022/097933
Other languages
English (en)
French (fr)
Inventor
杨展
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 WO2022258026A1 publication Critical patent/WO2022258026A1/zh

Links

Images

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
    • H01M50/244—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 adhesive includes an electrical adhesive body and a guide tab, the electrical adhesive body is arranged on the conductive layer and electrically connected to the conductive layer, the guide tab is arranged on the protective plate and Electrically connected to the protective plate, the electrical glue body is at least partially opposite to the guide tab;
  • the electrical glue body When the battery assembly is assembled on the installation main body, the electrical glue body is in contact with and electrically connected to the guide lug, so that the protective plate, the battery core, the conductive layer, the electrical The glue body and the diversion lug form a circuit. When the circuit is open, the electrical glue body loses power and is fixedly connected to the conductive layer and the installation body respectively. When the circuit is a path, The electrical glue body is electrified and separated from at least one of the conductive layer and the installation body.
  • the embodiment of the present application also provides an electronic device, which includes the battery assembly in the above embodiment.
  • a wrapping film is provided on the outside of the battery, the wrapping film includes a conductive layer, the electrical glue body is arranged on the conductive layer, and is electrically connected to the conductive layer, and the guide tab is arranged on the protective plate and is electrically connected to the protective plate , and the electrical glue body and the current guide tab are at least partly arranged opposite to each other; thus, when the battery assembly is assembled to the installation body, the protective plate, the battery core, the conductive layer, the electrical glue body and the current guide tab together form a power supply The circuit, when the circuit is open, can supply power to the electrical glue, and when the circuit is open, it cannot supply power to the electrical glue.
  • the electrical adhesive body when energized, the electrical adhesive body is separated from at least one of the conductive layer and the installation body, and when no power is applied, the electrical adhesive body is fixedly connected to the conductive layer and the installation body.
  • 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 body is separated from at least one of the conductive layer and the installation body , so as to disassemble the battery body from the installation main body, thereby facilitating the repair, maintenance or replacement of the battery body.
  • the two can be relatively separated or contacted, so that when the electrical adhesive needs to be replaced, the electrical adhesive can be energized first, thereby facilitating the removal of the battery body from the installation body.
  • the electrical glue body can be removed along with the battery body, so that the electrical glue body and the guide tab can be separated, so that there is no need to remove the protective plate and remove the guide tab from the protective plate, and then the battery can be directly replaced.
  • the plastic body, and the diversion tab can be reused continuously, which saves materials to a certain extent, reduces the cost of battery replacement, improves the convenience of battery secondary use, and reduces the complexity of battery replacement.
  • the electrical glue is convenient for disassembling and assembling 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, since no double-sided adhesive is used, there will be no residual double-sided adhesive on the installation main body, which will not cause the problem of difficult cleaning of the double-sided adhesive.
  • 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 battery cell, protective plate and electrical glue disclosed in the embodiment of the present application;
  • Fig. 3 is a schematic diagram of the assembly of the battery assembly and the installation body disclosed in the embodiment of the present application;
  • Fig. 4 is a schematic diagram of the installation body disclosed in the embodiment of the present application.
  • Fig. 5 is a sectional view along A-A among Fig. 4;
  • Fig. 6 is a schematic diagram of the assembly of the first form of battery assembly disclosed in the embodiment of the present application.
  • Fig. 7 is a schematic diagram of the assembly of the battery assembly of the second form disclosed in the embodiment of the present application.
  • Fig. 8 is a schematic diagram of the assembly of the battery assembly of the third form disclosed in the embodiment of the present application.
  • FIG. 9 is a schematic cross-sectional view of the first form of the wrapping film disclosed in the embodiment of the present application.
  • Fig. 10 is a schematic cross-sectional view of the second form of the wrapping film disclosed in the embodiment of the present application.
  • Fig. 11 is a schematic cross-sectional view of the first form of the battery assembly disclosed in the embodiment of the present application.
  • Fig. 12 is a schematic cross-sectional view of the second form of the battery assembly disclosed in the embodiment of the present application.
  • Fig. 13 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. 14 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. 15 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. 16 is a flow chart of disassembling the battery disclosed in the embodiment of the present application.
  • Fig. 17 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. 18 is a flow chart of disassembling and charging the battery disclosed in the embodiment of the present application.
  • Fig. 19 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 battery cell 110 , a protective plate 120 and a wrapping film 130 , wherein the protective plate 120 is electrically connected to the battery cell 110 , and the wrapping film 130 covers the outside of the battery 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 generally includes a high-speed switch and an integrated circuit.
  • the high-speed switch is connected in series in the main discharge circuit by a Metal-Oxide-Semiconductor (MOS) tube for performing protection.
  • MOS Metal-Oxide-Semiconductor
  • the integrated circuit is composed of a precise comparator, and controls the high-speed switch by monitoring the voltage difference of the battery body 100 and the like.
  • 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 by the protective plate 120 .
  • overcharge protection, over discharge protection, overcurrent protection, temperature protection, etc. 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 , which can not only effectively prevent the electrolyte from leaking, but also prevent external 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 fix the battery body 100 to the mounting body 500 to achieve a fixed connection between the battery body 100 and the mounting body 500 .
  • the electrical adhesive 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 far is smaller than F1, so that 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 electrical glue 200 is used in this application.
  • the battery body 100 can be firmly fixed on the installation body 500;
  • the glue 200 is powered on, the battery body 100 can be detached from the installation body 500 .
  • the electrical glue 200 is split into a relatively independent electrical glue body 220 and a guide tab 210 .
  • the electrical glue body 220 When assembling the electrical glue 200, the electrical glue body 220 is arranged on the conductive layer 131, and the electrical glue body 220 is electrically connected to the conductive layer 131;
  • the tab 210 is electrically connected to the protective plate 120 , and optionally, the current guiding tab 210 may be welded on the protective plate 120 .
  • grooves can also be dug on the protective plate 120 to place the female seat, and the current guide tab 210 can be connected to the protective plate 120 through the fastening of the connector.
  • the electrical glue body 220 is located between the conductive layer 131 and the installation body 500, and the electrical glue body 220 is at least partially opposite to the current guide tab 210, and then the battery body 100 is squeezed to The electrical glue body 220 is in contact with the current guiding tab 210 , so that electrical conduction can be performed between the electrical glue body 220 and the current guiding tab 210 .
  • the electrical adhesive body 220 and the current guide tab 210 are in contact with each other and are electrically connected.
  • the main body 220 and the current guiding tab 210 together form a circuit.
  • the electrical glue 200 cannot be powered, so that the electrical glue body 220 loses power.
  • the electrical glue 200 cannot separate from the conductive layer 131 and the installation body 500, and then the conductive layer 131 and the installation body 500 pass through the electrical glue body. 220 are fastened together.
  • the power supply can supply power to the electrical adhesive 200, so that the electrical adhesive body 220 is energized.
  • the adhesive force of the electrical adhesive 200 is greatly reduced, resulting in loss of adhesion, and the connection between the battery body 100 and the installation body is lost. 500 , thereby separating the electrical glue 200 from at least one of the conductive layer 131 and the installation body 500 , so as to facilitate the detachment of the battery body 100 from the installation body 500 .
  • 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 500.
  • the battery body 100 can pass through the electrical single-sided adhesive.
  • the glue is detachably fixed on the installation body 500 to facilitate the disassembly and assembly of the battery body 100 .
  • the electrical double-sided adhesive can be disassembled from the conductive layer 131 and the installation body 500 , 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 can be in a power-off state; At least one of the main bodies 500 is separated so that the battery body 100 can be disassembled from the installation main body 500 , thereby facilitating repair, maintenance or replacement of the battery body 100 .
  • the electrical glue body 220 and the guide lug 210 are separately arranged, so that the two can be relatively separated or contacted, so that when the electrical glue 200 needs to be replaced, the electrical glue 200 can be energized first, thereby facilitating the installation of the battery body 100 from At the same time, the electrical glue body 220 can be removed along with the battery body 100, so that the electrical glue body 220 is separated from the guide tab 210, so that there is no need to remove the protective plate 120 and the guide tab 210 It is removed from the protective plate 120, and then the electrical glue body 220 can be replaced directly, and the guide tab 210 can be continuously reused, which saves materials to a certain extent, reduces the cost of battery replacement, and improves the convenience of battery secondary utilization, and Reduces the complexity of battery replacement.
  • the electrical glue 200 facilitates the disassembly and assembly of 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 battery life.
  • the double-sided adhesive since the double-sided adhesive is not used, there will be no residual double-sided adhesive on the installation main body 500, and the problem of difficulty in cleaning the double-sided adhesive will not be caused.
  • the flow guiding tab 210 includes a fixing portion 211 and a flow guiding portion 212 , wherein the fixing portion 211 and the flow guiding portion 212 may be integrally provided or fixedly connected to each other.
  • the fixing part 211 is fixedly connected with the protective plate 120
  • the flow guiding part 212 is used for contacting with the electrical glue body 220 .
  • the flow guide part 212 can be a sheet structure, and when the flow guide tab 210 is in contact with the electrical glue body 220, the flow guide part 212 can be partially overlapped with the electrical glue body 220 to ensure that the flow guide tab 210 is in contact with the electrical glue body 220.
  • the contact area of the glue body 220 can improve the flow diversion effect.
  • the fixing part 211 may be a protruding structure disposed on one side of the flow guiding part 212 , and the fixing part 211 may be fixed on the protective plate 120 by welding.
  • the current guide tab 210 can be made of metal material as a whole.
  • the fixed part 211 and the current guide part 212 can also be connected by a conductive member, and the area where the fixed part 211 is connected to the protective plate 120 is made of metal material, and the conductive part The area where the flow portion 212 is in contact with the electrical glue body 220 is made of metal.
  • the air guiding part 212 may be a rectangular plate.
  • a groove 511 is provided on the installation body 500, and the groove 511 is used to avoid the flow guide tab 210 to prevent the installation body from 500 interferes with the guide tab 210 , thereby affecting the assembly of the electrical glue 200 . Based on the above configuration, when the battery assembly is assembled on the installation body 500 , the flow guide tab 210 is embedded in the groove 511 .
  • the electrical glue body 220 located on the battery body 100 is effectively in contact with the guide tab 210 embedded in the groove 511, so that The electrical conduction between the electrical glue body 220 and the current guide tab 210 lays a foundation for electrifying the electrical glue 200 .
  • the groove 511 may be a rectangular groove, a circular groove, etc., and the shape of the groove 511 is adapted to the shape of the flow guide tab 210, and the specific shape of the groove 511 is not limited in the embodiment of the present application.
  • the installation body 500 is provided with a battery compartment 510 , and the battery components can be installed in the battery compartment 510 .
  • the groove 511 is provided on the bottom end surface of the battery compartment 510, so that after the battery assembly is assembled in the battery compartment 510, the electrical glue body 220 located on the back of the battery body 100 (that is, the side facing the bottom of the battery compartment 510) is located on the battery body. Between 100 and the bottom end surface of the battery compartment 510 , the battery body 100 is squeezed at this time, so that the electrical glue body 220 is in effective contact with the current guide tab 210 to achieve the purpose of electrical conduction.
  • the depth dimension of the groove 511 is equivalent to the thickness dimension of the flow guide tab 210 . Based on this, when the current guiding tab 210 is inserted into the groove 511, it can ensure that the surface of the current guiding tab 210 away from the bottom end surface of the groove 511 is in effective contact with the electrical glue body 220, and at the same time, it can also effectively avoid the conductive The lugs 210 protrude from the groove 511 to interfere with the assembly of the battery assembly and reduce the overall thickness of the battery assembly.
  • the cross-sectional area of the groove 511 is not smaller than the cross-sectional area of the flow guide tab 210 . Based on this, it can not only ensure that the flow guide tab 210 can be embedded in the groove 511 , but also effectively prevent the flow guide tab 210 from moving in the groove 511 , and ensure the stable installation of the flow guide tab 210 . It should be noted here that, in order to embed the flow guide tab 210 into the groove 511 more conveniently, generally, the cross-sectional area of the groove 511 is slightly larger than the cross-sectional area of the flow guide tab 210 . Of course, there is a certain assembly tolerance between the flow guide lug 210 and the groove 511 .
  • the distance between the side of the guide tab 210 and the side of the correspondingly provided electrical glue body 220 is L1
  • L1 is equal to L2.
  • the guide tab 210 and the groove 511 can be respectively positioned through L1 and L2 to ensure that the guide tab 210 is directly opposite to the groove 511 .
  • L2 L1+L3, where L3 is the assembly tolerance. Based on this, the assembly accuracy of the guide tab 210 and the groove 511 can be guaranteed within a certain tolerance range, thereby improving the battery assembly and Fitting accuracy between mounting bodies 500 .
  • the cross-sectional area of the guide portion 212 is not greater than the cross-sectional area of the electrical adhesive body 220 .
  • the cross-sectional areas of the flow guide part 212 and the electrical glue body 220 are equal, and at this time the flow guide part 212 and the electrical glue body 220 are completely opposite to each other, thereby ensuring the largest effective contact area between the two.
  • the cross-sectional area of the flow guide part 212 may also be smaller than that of the electrical glue body 220 , for example, the flow guide part 212 is disposed opposite to the end of the electrical glue body 220 close to the protective plate 120 .
  • the embodiment of the present application does not limit the specific relationship between the cross-sectional area of the flow guiding portion 212 and the electrical adhesive body 220 , as long as a sufficiently large contact area between the two can be ensured.
  • the battery cell 110 is provided with a battery positive tab 111 and a battery negative tab 112 , wherein the battery positive tab 111 and the battery negative tab 112 are electrically connected to the protective plate 120 respectively.
  • the battery positive tab 111 and the battery negative tab 112 are respectively arranged on one side of the battery cell 110 at intervals, and the battery positive tab 111 and the battery negative tab 112 are respectively welded to the protective plate 120 by welding.
  • the battery cell 110 and the protection plate 120 can be fixed together, and on the other hand, the battery cell 110 and the protection plate 120 can also be electrically connected.
  • the current guiding tab 210 can also be welded on the protective plate 120 in parallel with the battery negative tab 112 .
  • the battery body 100 in the embodiment of the present application further includes a connector 140 , the connector 140 is arranged on the protection board 120 and is electrically connected to the protection board 120 , so that through the connector 140 The protective plate 120 and even the battery assembly may be electrically connected to the main body of the electronic device.
  • the connector 140 includes a positive terminal 141 and a negative terminal 142 through which the electrical connection between the connector 140 and the electronic device can be realized.
  • the positive terminal 141, the battery positive tab 111, the conductive layer 131, the electrical adhesive body 220, the current guide tab 210 and the negative terminal 142 form a first circuit P, through which the electrical adhesive body 220 can be connected. Power on or off.
  • the electrical adhesive body 220 is de-energized.
  • the electrical adhesive body 220 is fixedly connected to the conductive layer 131 and the installation body 500 respectively, so that the battery body 100 is fixed on the installation body through the electrical adhesive body 220 500 on.
  • the first circuit P is a path, the electrical adhesive body 220 is energized.
  • the electrical adhesive body 220 can be separated from at least one of the conductive layer 131 and the installation body 500, thereby facilitating the removal of the battery body 100 from the installation body 500. Down. It should be noted here that, in the above process, the battery assembly may be powered by the electronic device, so as to realize power supply to the first circuit P.
  • 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 controlled by an integrated circuit (Integrated Circuit, IC) controller of the protection board 120 .
  • the control element 400 controls the first switch 310 to be combined so that the first circuit P is turned on. In a normal state, the first switch 310 is in an off state, that is, the first circuit P is disconnected.
  • the electronic device In after-sales maintenance or other scenarios where the battery body 100 needs to be disassembled, the electronic device is connected to a charger or an external power source, 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 of the protection board 120 After the controller receives the signal, the first switch 310 is combined to connect the first circuit P, and power is supplied to the first circuit P through the electronic device, so that the electrical glue body 220 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 battery body 100 can supply power to the electrical adhesive 200 through circuit logic design, so that the electrical adhesive 200 can be energized and lose stickiness.
  • the circuit logic design can separate the charging scene and the battery dismantling scene, so as to avoid conflicts that cause the battery body 100 to be dismantled by mistake during charging.
  • the circuit logic is 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 body 220, the guide tab 210 and the negative terminal 142 together form the second circuit Q
  • the battery 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.
  • the electrical adhesive body 220 can be energized through the second circuit Q, and the electrical adhesive body 220 can contact at least one of the conductive layer 131 and the installation body 500 after being energized. separate, so that the battery body 100 can be detached from the installation body 500 .
  • the battery pack can be charged through the third circuit R.
  • 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 with 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 makes the first
  • the combination of the two switches 320 makes the second circuit Q connected and supplies 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 body 220 is energized and loses its viscosity for convenience.
  • the second switch 320 may be a MOS switch.
  • the time for the second circuit Q to be turned on may also be set, for example, 10 seconds to 20 seconds. In this path, 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. fit.
  • 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 adhesive body 220 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 adhesive body 220 can be directly attached to the conductive layer 131 .
  • the protective layer 132 may be removed after the finished battery cell 110 is produced by physical or chemical process. The specific method is as follows:
  • a physical radium engraving process can also be used.
  • a laser with a suitable intensity is set to at least partially evaporate the protective layer 132 on the surface of the conductive layer 131 through light energy, thereby exposing the conductive layer 131, and then wipe the conductive layer with a dust-free cloth. 131 , and then stick the electrical adhesive body 220 on the conductive layer 131 .
  • the above method has high requirements on laser precision, and cannot cause damage to the surface of the conductive layer 131, and the cost is relatively high.
  • At least part of the protection layer 132 can be removed through the above chemical and physical methods. For example, part of the protective layer 132 is removed to form the shelter space 1321 , or all of it is removed to expose the entire conductive layer 131 .
  • the electrical adhesive body 220 can also be disposed on a side of the protective layer 132 away from the conductive layer 131 , and the electrical adhesive body 220 is electrically connected to the conductive layer 131 .
  • a plurality of flow guide lugs 210 may be drawn out from the main body 220 of the electrical glue to perform electrification and adhesive loss. In this way, there are many guide tabs 210 drawn from the main body 220 of the electrical glue, and the protective plate 120 needs to reserve a place for welding.
  • the shape of the electrical glue body 220 is adapted to the shape of the shelter space 1321 , and the shape of the shelter space 1321 can be optimized according to the structurally compatible design of the actual battery compartment 510 .
  • the area ratio of the shelter space 1321 to the protective 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 adhesive body 220 can be a conventional rectangle or a special shape, such as U-shaped Or back-shaped, it can be a single whole.
  • the conductive layer 131 is in contact with the entire surface of the electrical adhesive body 220 , which can greatly improve the flow-through effect and reduce the current-conducting tabs 210 .
  • the diversion tab 210, the battery positive tab 111 and the battery negative tab 112 are respectively misplaced, and the misaligned diversion
  • the tabs 210 can be directly welded to the protective plate 120 by spot welding.
  • the guide tab 210 is overlapped with the battery positive tab 111 or the battery negative tab 112 .
  • Welding technique welds together, then welds to 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 guide tabs 210 located at the edge of the electrical glue body 220 , and the plurality of guide tabs 210 are respectively electrically connected to the protection plate 120 .
  • the edge area of the electrical glue body 220 is provided with a current-guiding positive tab and a current-guiding negative tab, and is electrically connected to the protective plate 120 through the current-guiding positive tab and the current-guiding negative tab.
  • the embodiment of the present application does not limit the number and form of the flow guide tabs 210 , the size and form of the electrical glue body 220 , and the like.
  • the embodiment of the present application also discloses an electronic device, and the disclosed electronic device includes the above-mentioned battery assembly.
  • the electrical adhesive 200 has the characteristic of losing viscosity when it is energized, and can normally meet the fixed reliability requirements of the battery body 100 before energization. 200 energization process 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
  • the PET and double-sided adhesive tape that the battery body 100 is in contact with the battery compartment 510 can be eliminated, and at least part of the protective layer 132 can be eliminated, so that the conductive layer 131 is in direct contact with the electrical glue 200 to form a power circuit, and the thickness of the battery body 100 can be reduced by 0.145 mm 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 in the case of the same battery thickness Increase the battery capacity by about 3%, increasing the battery life of electronic devices.
  • the guide tab 210 of the electrical glue 200 can be continuously reused without disassembling the protective plate 120, only need to replace the electrical
  • the glue body is only 220, which saves materials, reduces the cost of battery replacement, and improves the convenience of secondary battery utilization.
  • the guide tab 210 of the electrical glue 200 is routed in the groove 511 of the battery compartment 510.
  • the thickness of the electronic device can improve the user's grip experience, or in the case of the same battery thickness, it can increase the battery capacity and increase the battery life of the electronic device.

Landscapes

  • 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)
  • Connection Of Batteries Or Terminals (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，包括电芯、保护板和包裹膜，包裹膜包括导电层；电气胶，包括电气胶本体和导流极耳，电气胶本体与导电层电连接，导流极耳与保护板电连接，电气胶本体与导流极耳相对设置；电池组件装配于安装主体时，电气胶本体与导流极耳接触并电连接，以使保护板、电芯、导电层、电气胶本体和导流极耳形成电路，当电路为断路时，电气胶本体失电并与导电层和安装主体分别连接，当电路为通路时，电气胶本体通电并与导电层及安装主体中至少一者分离。一种电子设备，包括电池组件。

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.202110655401.0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，所述电气胶包括电气胶本体和导流极耳，所述电气胶本体设置于所述导电层并与所述导电层电连接，所述导流极耳设置于所述保护板并与所述保护板电连接，所述电气胶本体与所述导流极耳至少部分相对设置；
在所述电池组件装配于安装主体的情况下，所述电气胶本体与所述导流极耳接触并电连接，以使所述保护板、所述电芯、所述导电层、所述电气胶本体和所述导流极耳形成电路，当所述电路为断路时，所述电气胶本体失电并与所述导电层和所述安装主体分别固定连接，当所述电路为通路时，所述电气胶本体通电并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，该电子设备包括上述实施例中的电池组件。
本申请实施例中，电池外侧设有包裹膜，包裹膜包括导电层，电气胶本体设置在导电层上，并与导电层电连接，导流极耳设置在保护板上并与保护板电连接，且电气胶本体与导流极耳至少部分相对设置；如此，在电池组件装配至安装主体的情况下，保护板、电芯、导电层、电气胶本体和导流极耳共同形成一供电的电路，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，电气胶本体与导电层及安装主体中的至少一者分离，在未通电时，电气胶本体与导电层和安装主体固定连接。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，从而使电气胶本体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。
并且由于电气胶本体与导流极耳分别设置，使得两者之间可相对分离或接触，从而在需要更换电气胶时，可以首先对电气胶通电，从而方便电池本体从安装主体上拆下，与此同时，电气胶本体可以随着电池本体拆下，使电气胶本体与导流极耳分离，从而无需拆下保护板以及将导流极耳从保护板上拆下，进而可以直接更换电气胶本体，而导流极耳可以持续复用，在一定程 度上节省物料，降低换电池成本，提升电池二次利用的便捷性，且降低了更换电池的复杂程度。
相比于常规的PET方式，本申请电池组件的固定方式中，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电芯、保护板及电气胶的装配示意图；
图3为本申请实施例公开的电池组件与安装主体的装配示意图；
图4为本申请实施例公开的安装主体的示意图；
图5为图4中沿A-A的剖视图；
图6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7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8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9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10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11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12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13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14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15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16为本申请实施例公开的拆卸电池的流程图；
图17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18为本申请实施例公开的拆卸电池和充电的流程图；
图19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-导流极耳；211-固定部；212-导流部；220-电气胶本体；
310-第一开关；320-第二开关；330-第三开关；
400-控制元件；
500-安装主体；510-电池仓；511-凹槽；
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8，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包覆在电芯110的外侧。可选地，保护板120设置在电芯110的一端处。保护板120为电池本体100的保护构件，保护板120一般包括高速开关和集成电路，高速开关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。另外，包裹膜130包裹在电芯110的外侧，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为电池组件的安装构件，其可以将电池本体100固定至安装主体500上，以实现电池本体100与安装主体500的固定连接。电气胶200具有通电失粘的特性，在通电前，粘结力为F1，该粘结力F1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2和图3，为了便于固定或拆卸电池本体100，本申请中采用电气胶200的方式，在电气胶200未通电时，可以将电池本体100牢牢固定在安装主体500上；在电气胶200通电时，可以将电池本体100从安装主体500 上拆下。为了方便更换电气胶200，本申请实施例中将电气胶200拆分为相对独立的电气胶本体220和导流极耳210。在装配电气胶200时，将电气胶本体220设置于导电层131上，并且使电气胶本体220与导电层131电连接；并且将导流极耳210设置在保护板120上，并使导流极耳210与保护板120电连接，可选地，导流极耳210可以焊接在保护板120上。当然，还可以在保护板120上挖槽以放置母座，通过连接器扣合的形式使导流极耳210接入保护板120。在装配电池本体100的过程中，电气胶本体220位于导电层131和安装主体500之间，且电气胶本体220与导流极耳210至少部分相对设置，而后对电池本体100进行挤压，以使电气胶本体220与导流极耳210接触，从而使电气胶本体220与导流极耳210之间可进行电导通。
基于上述设置，在电池组件装配于安装主体500的情况下，电气胶本体220与导流极耳210相互接触并实现电连接，此时，保护板120、电芯110、导电层131、电气胶本体220和导流极耳210共同形成了电路。当该电路处于断路时，无法为电气胶200供电，从而使得电气胶本体220失电，此时电气胶200无法脱离导电层131和安装主体500，进而导电层131和安装主体500通过电气胶本体220固定在一起。当该电路为通路时，电源可以为电气胶200供电，从而使电气胶本体220通电，此时，电气胶200的粘结力大幅减小而导致失粘，失去了对电池本体100与安装主体500之间的固定作用，进而使电气胶200与导电层131及安装主体500中的至少一者分离，以便于从安装主体500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500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500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500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，从而使电气胶本体220与导电层131及安装主体500中的至少一者分离，以便于将电池本体100从安装主体500上拆下，进而方便电池本体100的维修、维护或更换。并且由于电气胶本体220与导流极耳210分别设置，使得两者之间可相对分离或接触，从而在需要更换电气胶200时，可以首先对电气胶200通电，从而方便电池本体100从安装主体500上拆下，与此同时，电气胶本体220可以随着电池本体100拆下，使电气胶本体220与导流极耳210分离，从而无需拆下保护板120以及将导流极耳210从保护板120上拆下，进而可以直接更换电气胶本体220，而导流极耳210可以持续复用，在一定程度上节省物料，降低换电池成本，提升电池二次利用的便捷性，且降低了更换电池的复杂程度。
相比于常规的PET方式，本申请电池组件的固定方式中，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，由于不适用双面胶，从而不会造成安装主体500上残留双面胶，进而不会造成双面胶清理困难的问题。
继续参考图2，在一些实施例中，导流极耳210包括固定部211和导流部212，其中，固定部211与导流部212可以是一体设置，还可以是相互固定连接。固定部211与保护板120固定连接，导流部212用于与电气胶本体220接触。可选地，导流部212可以是片状结构，在导流极耳210与电气胶本体220接触时，可以通过导流部212与电气胶本体220部分重合，保证导流极耳210与电气胶本体220的接触面积，从而提高导流效果。固定部211 可以是设置在导流部212一侧的凸起结构，固定部211可以通过焊接的方式固定在保护板120上。另外，导流极耳210可以整体采用金属材质，当然，还可以是固定部211与导流部212之间通过导电构件连接，且固定部211与保护板120连接的区域采用金属材质，以及导流部212与电气胶本体220接触的区域采用金属材质。在一种可选地实施例中，导流部212可以是长方形板。
为了防止导流极耳210对电气胶200的装配形成干涉，本申请实施例中，在安装主体500上设置凹槽511，该凹槽511用于对导流极耳210避让，以防止安装主体500对导流极耳210产生干涉，进而影响到电气胶200的装配。基于上述设置，在电池组件装配于安装主体500的情况下，导流极耳210嵌设于凹槽511中。与此同时，在装配电池组件过程中，对电池本体100进行挤压时，使位于电池本体100上的电气胶本体220与嵌设于凹槽511中的导流极耳210有效接触，从而使电气胶本体220与导流极耳210之间电导通，以为电气胶200通电奠定基础。可选地，凹槽511可以是矩形槽、圆形槽等，凹槽511的形状与导流极耳210的形状相适应，本申请实施例中不限制凹槽511的具体形状。
参考图3至图5，进一步地，安装主体500上设有电池仓510，电池组件可以装配置电池仓510中。凹槽511则开设于电池仓510的底部端面上，如此，在电池仓510内装配电池组件后，位于电池本体100背面(即，朝向电池仓510底部的侧面)的电气胶本体220位于电池本体100与电池仓510的底端面之间，此时对电池本体100进行挤压，以使电气胶本体220与导流极耳210有效接触，以达到电导通的目的。
在一些可选的实施例中，凹槽511的深度尺寸与导流极耳210的厚度尺寸相当。基于此，在导流极耳210嵌入至凹槽511中时，能够保证导流极耳210的背离凹槽511底端面的表面与电气胶本体220有效接触，与此同时，还能够有效避免导流极耳210凸出凹槽511而对电池组件的装配起到干涉作 用，并且减小了电池组件的整体厚度。
在一些可选的实施例中，凹槽511的横截面积不小于导流极耳210的横截面积。基于此，既可以保证导流极耳210能够嵌入至凹槽511中，又可以有效防止导流极耳210在凹槽511中窜动，保证了导流极耳210的稳定安装。此处需要说明的是，为了更加方便地将导流极耳210嵌入凹槽511中，通常情况下，凹槽511的横截面积略大于导流极耳210的横截面积。当然，导流极耳210与凹槽511之间具有一定的装配公差。
为了提高电池组件与安装主体500之间的装配精度，本申请实施例中，令导流极耳210的侧边与相应设置的电气胶本体220的侧边之间的距离为L1，令凹槽511的侧壁与对应设置的电池仓510的侧壁之间的距离为L2，并使L1等于L2。通过L1和L2可以对导流极耳210和凹槽511分别进行定位，以保证导流极耳210与凹槽511正相对。当然，考虑到装配公差，令L2＝L1+L3，此处的L3为装配公差，基于此，可在一定公差范围内保证导流极耳210与凹槽511的装配精度，进而提升电池组件与安装主体500之间的装配精度。
在一些实施例中，导流部212的横截面积不大于电气胶本体220的横截面积。具体可以是，导流部212与电气胶本体220两者的横截面积相等，此时导流部212与电气胶本体220完全相对设置，从而保证了两者之间的有效接触面积最大。当然，还可以是导流部212的横截面积小于电气胶本体220的横截面积，如，导流部212与电气胶本体220的靠近保护板120的一端相对设置。本申请实施例中不限制导流部212与电气胶本体220的横截面积之间的具体关系，只要能够保证两者之间具有足够大的接触面积即可。
继续参见图1至图8，为了实现电芯110与保护板120之间电连接，本申请实施例中，电芯110上设有电池正极耳111和电池负极耳112，其中，电池正极耳111和电池负极耳112分别与保护板120电连接。可选地，电池正极耳111和电池负极耳112分别设置在电芯110的一侧，且间隔设置，采用焊接方式将电池正极耳111和电池负极耳112分别焊接在保护板120上，一 方面可以将电芯110与保护板120固定在一起，另一方面还可以将电芯110与保护板120电导通。另外，导流极耳210还可以与电池负极耳112并联焊接在保护板120上。
参考图13，为了将电池组件与电子设备连接，本申请实施例中的电池本体100还包括连接器140，连接器140设置于保护板120，并与保护板120电连接，从而通过连接器140可以将保护板120乃至电池组件与电子设备的主体电连接。在一些实施例中，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可以实现连接器140与电子设备之间的电连接。基于上述设置，使得正极端子141、电池正极耳111、导电层131、电气胶本体220、导流极耳210和负极端子142形成第一电路P，通过第一电路P可以实现电气胶本体220的通电或断电。在第一电路P为断路的情况下，电气胶本体220失电，此时电气胶本体220与导电层131及安装主体500分别固定连接，从而通过电气胶本体220将电池本体100固定在安装主体500上。在第一电路P为通路的情况下，电气胶本体220通电，此时电气胶本体220能够与导电层131及安装主体500中的至少一者分离，从而便于电池本体100从安装主体500上拆下。此处需要说明的是，上述过程中，可以通过电子设备对电池组件进行供电，从而实现对第一电路P供电。
参考图15、图16和图19，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)控制器控制。在拆卸电池本体100的情况下，控制元件400控制第一开关310结合，以使第一电路P接通。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。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界电源，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，通过电子设备向第一电路P供电，从而使电气胶本体220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(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界电源，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。
与此同时，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。下面对电路逻辑进行详细阐述。
参考图14，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、电气胶本体220、导流极耳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和第三电路R的通断情况进行控制，以达到不同的目的。
在第二电路Q为通路、第三电路R为断路的情况下，可以通过第二电路Q使电气胶本体220通电，电气胶本体220通电后与导电层131及安装主体500中的至少一者分离，从而可以将电池本体100从安装主体500上拆下。相反，在第二电路Q为断路、第三电路R为通路的情况下，可以通过第三电路R使电池组件充电。
参考图17至图19，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控制器的控制。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。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，从而使电气胶本体220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。
参考图9至图12，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，从而可以保护导电层131不被刮伤。为了将电气胶本体220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，电气胶本体220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，以便于电气胶本体220与导电层131贴合且电连接。
参考图11，在其他实施例中，导电层131上还可以不存在防护层132。 例如，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，可以直接将电气胶本体220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再贴附电气胶本体220，各种尺寸公差会导致电气胶本体220与外露的导电层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的区域，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后，使导电层131外露，而后用无尘布擦净防护层132的表面，而后再将电气胶本体220贴附在导电层131上。上述方式可以同时处理大量电芯110，且成本相对较低。
另外，还可以采用物理镭雕工艺，首先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，从而外露出导电层131，而后使无尘布擦净导电层131的表面，而后再将电气胶本体220贴附在导电层131上。上述方式对激光精度要求较高，且不能对导电层131表面造成损伤，且成本相对较高。
通过上述化学、物理方式，均可以去除至少部分防护层132。例如，在防护层132上去除部分而形成避位空间1321，或者全部去除，以露出全部导电层131。
除上述方式之外，电气胶本体220还可以设置于防护层132的背离导电层131的一侧，且电气胶本体220与导电层131电连接。可选地，可在电气胶本体220上引出多个导流极耳210进行通电失粘。此种方式中电气胶本体220上引出的导流极耳210较多，保护板120需要预留位置进行焊接。
进一步地，电气胶本体220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510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本体220，根据避位空间1321的形状，电气胶本体220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，确保电气胶本体220能够贴附在电池本体100的背面。
基于上述分析可知，本申请实施例中去除防护层132后，使导电层131与电气胶本体220整面接触，在极大提升通流效果的同时，还可以减少导流极耳210。
参考图6和图7，在一些实施例中，包裹膜130包裹于电芯110外侧的情况下，导流极耳210与电池正极耳111及电池负极耳112分别错位设置，错位设置的导流极耳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，导流极耳210与电池正极耳111或电池负极耳112重叠设置，重叠设置后，导流极耳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，在焊接至保护板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。
参考图7，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本体220边缘区域的导流极耳210，多个导流极耳210分别与保护板120电连接。例如，电气胶本体220的边缘区域设置导流正极耳和导流负极耳，通过导流正极耳和导流负极耳与保护板120电连接。当然，本申请实施例中不限制导流极耳210的数量、形式、电气胶本体220的尺寸形式等。
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上述电池组件。
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，在售后维修或需要拆卸电池本 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510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约3％的电池容量，增加电子设备的续航。
通过采用电气胶本体220与导流极耳210分离的方式，在二次利用电池的场景中，电气胶200的导流极耳210可以持续复用，无需拆开保护板120，只需要更换电气胶本体220即可，节省物料，降低换电池成本，且提升电池二次利用的便捷性。并且电气胶200的导流极耳210在电池仓510的凹槽511内走线，在增大电气胶200接触面积提升通电失粘效率的同时，不会在电池厚度方向产生干涉，从而可以降低电子设备的厚度，提升用户握持体验，或在相同电池厚度的情况下可以提升电池容量，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 (15)

  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)包括电气胶本体(220)和导流极耳(210)，所述电气胶本体(220)设置于所述导电层(131)并与所述导电层(131)电连接，所述导流极耳(210)设置于所述保护板(120)并与所述保护板(120)电连接，所述电气胶本体(220)与所述导流极耳(210)至少部分相对设置；
    在所述电池组件装配于电子设备的安装主体(500)的情况下，所述电气胶本体(220)与所述导流极耳(210)接触并电连接，以使所述保护板(120)、所述电芯(110)、所述导电层(131)、所述电气胶本体(220)和所述导流极耳(210)形成电路，当所述电路为断路时，所述电气胶本体(220)失电并与所述导电层(131)和所述安装主体(500)分别固定连接，当所述电路为通路时，所述电气胶本体(220)通电并与所述导电层(131)及所述安装主体(500)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，所述导流极耳(210)包括一体设置或相互连接的固定部(211)和导流部(212)，所述固定部(211)与所述保护板(120)固定连接，所述导流部(212)用于与所述电气胶本体(220)接触。
  3. 根据权利要求1所述的电池组件，其中，所述安装主体(500)设有 凹槽(511)，在所述电池组件装配于所述安装主体(500)的情况下，所述导流极耳(210)嵌设于所述凹槽(511)中。
  4. 根据权利要求3所述的电池组件，其中，所述安装主体(500)设有电池仓(510)，所述凹槽(511)开设于所述电池仓(510)的底部端面；
    和/或，所述凹槽(511)的深度尺寸H与所述导流极耳(210)的厚度尺寸相当；
    和/或，所述凹槽(511)的横截面积不小于所述导流极耳(210)的横截面积。
  5. 根据权利要求4所述的电池组件，其中，所述导流极耳(210)的侧边与对应设置的所述电气胶本体(220)的侧边之间的距离为L1，所述凹槽(511)的侧壁与对应设置的所述电池仓(510)的侧壁之间的距离为L2，所述L1等于所述L2。
  6. 根据权利要求2所述的电池组件，其中，所述导流部(212)的横截面积不大于所述电气胶本体(220)的横截面积。
  7. 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)，所述电池正极耳(111)和所述电池负极耳(112)分别与所述保护板(120)电连接。
  8. 根据权利要求7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)、所述电气胶本体(220)、所述导流极耳(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，所述电气胶本体(220)失电并 与所述导电层(131)及所述安装主体(500)分别固定连接，在所述第一电路(P)为通路的情况下，所述电气胶本体(220)通电并与所述导电层(131)及所述安装主体(500)中的至少一者分离。
  9. 根据权利要求7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)、所述电气胶本体(220)、所述导流极耳(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，所述电气胶本体(220)通电并与所述导电层(131)及所述安装主体(500)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。
  10. 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)，所述电气胶本体(220)设置于所述避位空间(1321)，并与所述导电层(131)贴合；或者，所述电气胶本体(220)设置于所述防护层(132)的背离所述导电层(131)的一侧，且所述电气胶本体(220)与所述导电层(131)电连接。
  11. 根据权利要求7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，所述导流极耳(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，所述导流极耳(210) 与所述电池正极耳(111)或所述电池负极耳(112)重叠设置。
  12. 根据权利要求11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本体(220)边缘区域的所述导流极耳(210)，多个所述导流极耳(210)分别与所述保护板(120)电连接。
  13. 根据权利要求8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。
  14. 根据权利要求9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。
  15. 一种电子设备，包括权利要求1-14中任意一项所述的电池组件。
PCT/CN2022/097933 2021-06-11 2022-06-09 电池组件及电子设备 WO2022258026A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110655401.0 2021-06-11
CN202110655401.0A CN115472990A (zh) 2021-06-11 2021-06-11 电池组件及电子设备

Publications (1)

Publication Number Publication Date
WO2022258026A1 true WO2022258026A1 (zh) 2022-12-15

Family

ID=84363367

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/097933 WO2022258026A1 (zh) 2021-06-11 2022-06-09 电池组件及电子设备

Country Status (2)

Country Link
CN (1) CN115472990A (zh)
WO (1) WO2022258026A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115861311A (zh) * 2023-02-24 2023-03-28 广东利元亨智能装备股份有限公司 槽位印检测方法、控制器和计算机可读存储介质
CN117293476A (zh) * 2023-11-27 2023-12-26 山东鹏洲翰程新能源科技有限公司 一种便于安装和拆卸的动力锂电池外置保护板结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101702443A (zh) * 2009-10-23 2010-05-05 欣旺达电子股份有限公司 一种软包电池的封装结构
JP2017134887A (ja) * 2014-06-05 2017-08-03 三洋電機株式会社 電子機器、電池パック、及び粘着シート
US20200195025A1 (en) * 2018-12-17 2020-06-18 Microsoft Technology Licensing, Llc Electrical battery de-bonding
CN113422150A (zh) * 2021-06-11 2021-09-21 维沃移动通信有限公司 电子设备
CN113471602A (zh) * 2021-06-28 2021-10-01 东莞新能德科技有限公司 用电装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106207285B (zh) * 2016-07-29 2019-11-15 北京小米移动软件有限公司 电池组件及智能设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101702443A (zh) * 2009-10-23 2010-05-05 欣旺达电子股份有限公司 一种软包电池的封装结构
JP2017134887A (ja) * 2014-06-05 2017-08-03 三洋電機株式会社 電子機器、電池パック、及び粘着シート
US20200195025A1 (en) * 2018-12-17 2020-06-18 Microsoft Technology Licensing, Llc Electrical battery de-bonding
CN113422150A (zh) * 2021-06-11 2021-09-21 维沃移动通信有限公司 电子设备
CN113471602A (zh) * 2021-06-28 2021-10-01 东莞新能德科技有限公司 用电装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115861311A (zh) * 2023-02-24 2023-03-28 广东利元亨智能装备股份有限公司 槽位印检测方法、控制器和计算机可读存储介质
CN117293476A (zh) * 2023-11-27 2023-12-26 山东鹏洲翰程新能源科技有限公司 一种便于安装和拆卸的动力锂电池外置保护板结构
CN117293476B (zh) * 2023-11-27 2024-02-06 山东鹏洲翰程新能源科技有限公司 一种便于安装和拆卸的动力锂电池外置保护板结构

Also Published As

Publication number Publication date
CN115472990A (zh) 2022-12-13

Similar Documents

Publication Publication Date Title
WO2022258026A1 (zh) 电池组件及电子设备
CN101431168B (zh) 电池组和使用该电池组的电子装置
JP4211276B2 (ja) 充電式電気機器
US20210143518A1 (en) Battery Module, Battery Pack, Apparatus, and Failure Handling Method
EP2264812A2 (en) Battery Pack
KR20130025715A (ko) 리튬 폴리머 전지
CN104425793A (zh) 电池组、电动工具和电池充电器
JP2015508564A (ja) 新規な構造の内蔵型電池セル
WO2022111052A1 (zh) 电子设备
KR100835743B1 (ko) 2차 전지용 배터리팩
JP2008235028A (ja) 電流制限部材及び該電流制限部材を備える電池パック
KR20170028069A (ko) 전지 모듈
KR101726777B1 (ko) 커넥터의 위치 고정을 가능하게 하는 전지 조립용 지그 및 이를 사용하여 제조된 전지
JPH09283103A (ja) バッテリパック
WO2022258027A1 (zh) 电池组件及电子设备
CN205657090U (zh) 一种手机专用的可智能断电防水散热高效的电池板
CN204230363U (zh) 易于拆装的锂离子电池
CN217062167U (zh) 极片以及电芯
JP2009059630A (ja) 電池パック
KR101296937B1 (ko) 이차전지
KR20170134270A (ko) 전기자동차용 배터리팩
JP2003249269A (ja) 非水電解質二次電池
KR20080065132A (ko) 2차전지용 배터리팩
JP2012084569A (ja) 電池パック
CN115377599A (zh) 电子设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22819623

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE