WO2024098927A1 - 电池及电子设备 - Google Patents

电池及电子设备 Download PDF

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Publication number
WO2024098927A1
WO2024098927A1 PCT/CN2023/117227 CN2023117227W WO2024098927A1 WO 2024098927 A1 WO2024098927 A1 WO 2024098927A1 CN 2023117227 W CN2023117227 W CN 2023117227W WO 2024098927 A1 WO2024098927 A1 WO 2024098927A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery cell
tabs
connecting portion
boss
Prior art date
Application number
PCT/CN2023/117227
Other languages
English (en)
French (fr)
Inventor
黄增科
罗自皓
Original Assignee
珠海冠宇电源有限公司
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 珠海冠宇电源有限公司 filed Critical 珠海冠宇电源有限公司
Publication of WO2024098927A1 publication Critical patent/WO2024098927A1/zh

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Classifications

    • 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 present application relates to the field of batteries, and in particular to a battery and an electronic device.
  • lithium-ion batteries have the advantages of large capacity, small size, light weight and green environmental protection, and have been widely used in industries such as digital electronic products and electric vehicles.
  • lithium battery is usually equipped with a battery protection board for monitoring and protection.
  • a battery protection board for monitoring and protection.
  • the overcurrent requirements for batteries and protection boards are getting higher and higher.
  • the size of the protection board is set larger accordingly.
  • the present application provides a battery and an electronic device, aiming to solve the technical problem in the related technology that the battery capacity is relatively small, affecting the battery life of the electronic device.
  • the present application provides a battery, comprising a battery cell, a connector and a protection plate assembly, wherein the battery cell comprises a battery cell body and two tabs connected to the battery cell body, the connector comprises two connecting tabs and a connecting portion connecting the two connecting tabs, wherein one of the connecting tabs is connected to one of the tabs and is electrically conductive to form a composite tab;
  • the composite pole lug and the other pole lug are both connected to the protection plate assembly to form a first loop; the other connecting pole lug and the other pole lug are both connected to the protection plate assembly to form a second loop.
  • the connecting portion includes an integrally formed connecting portion body and a convex
  • the connecting portion body is connected to the two connecting tabs, and the boss is connected to the battery cell body.
  • the boss is located at a position on the connecting portion body corresponding to any one of the two connecting tabs, and is located on a side of the connecting portion body close to the battery cell body.
  • the boss is located on the connecting portion body between the two connecting tabs;
  • the boss is located on a side of the connecting portion body close to the battery cell body;
  • the boss is located on a side of the connecting portion body away from the battery cell body.
  • one of the connecting tabs is stacked and connected with one of the tabs to form the composite tab.
  • the protection plate assembly includes a circuit board, a first conductive member, a second conductive member and a third conductive member, the first conductive member is connected to another composite electrode, the second conductive member is connected to another electrode, and the third conductive member is connected to another connection electrode.
  • the circuit board, the first conductive member, the second conductive member, the composite tab and another tab form the first loop;
  • the circuit board, the second conductive member, the third conductive member, another of the tabs, and another of the connecting tabs form the second loop.
  • it further includes an insulating layer, wherein the insulating layer covers both sides of the connecting portion, and along the extending direction of the connecting portion, the edge of the insulating layer protrudes beyond the edge of the connecting portion.
  • the edge of the insulating layer protrudes from the edge of the connecting portion by a dimension of 0.2 mm-1.0 mm.
  • the connecting tab and the extending direction of the connecting portion body intersect, and a first notch is provided at a corner of the connection between the connecting tab and the connecting portion body;
  • At least one of the tabs is located between the two connecting tabs, the orthographic projection of the tab on the plane where the connecting portion body is located overlaps with at least a portion of the connecting portion body, and a second notch is provided on the connecting portion body in the overlapping area;
  • a third notch is provided at at least one corner of the connection between the boss and the connecting part body.
  • the connecting member is a flexible connecting member, and part of the connecting member The component is bent and connected to the battery cell body.
  • part of the connecting member is bent and enters the top sealing deep pit surface of the battery cell body
  • part of the connecting piece is bent and enters into the top sealing shallow pit surface of the battery cell body.
  • the connecting member is fixedly connected to the top seal of the battery cell body by double-sided tape or adhesive tape or glue.
  • the present application further provides an electronic device, comprising a housing and the battery, wherein the battery is located inside the housing.
  • the battery and electronic device provided by the present application are provided with a connector having two connecting pole ears, and one of the connecting pole ears is connected to one of the pole ears to form a composite pole ear, so that the composite pole ear can be connected to the battery cell body through the connecting part; the composite pole ear and the other pole ear are connected to the protection board assembly to form a first circuit, and the other connecting pole ear and the other pole ear are connected to the protection board assembly to form a second circuit.
  • the first circuit and the second circuit can form two parallel current circuits, that is, the protection board assembly and the battery cell form a parallel double circuit, which can reduce the single circuit current size of the protection board assembly, and the size of the protection board assembly can be reduced, which can increase the accommodating size of the battery and increase the capacity of the battery cell, that is, increase the battery capacity.
  • FIG1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of the structure of a battery cell provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of a first structure of a battery connector provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of a first structure of a battery cell and a connector provided in an embodiment of the present application
  • FIG5 is a schematic diagram of a first structure of a battery provided in an embodiment of the present application.
  • FIG6 is a schematic diagram of a second structure of a connector for a battery provided in an embodiment of the present application.
  • FIG7 is a schematic diagram of a second structure of a battery cell and a connector provided in an embodiment of the present application.
  • FIG8 is a schematic diagram of a second structure of a battery provided in an embodiment of the present application.
  • FIG9 is a schematic diagram of a third structure of a battery connector provided in an embodiment of the present application.
  • FIG10 is a schematic diagram of a third structure of a battery cell and a connector of a battery provided in an embodiment of the present application;
  • FIG11 is a schematic diagram of a third structure of a battery provided in an embodiment of the present application.
  • FIG12 is a schematic diagram of a fourth structure of a battery connector provided in an embodiment of the present application.
  • FIG13 is a fourth structural schematic diagram of a battery cell and a connector of a battery provided in an embodiment of the present application.
  • FIG14 is a schematic diagram of a fourth structure of a battery provided in an embodiment of the present application.
  • FIG15 is a schematic diagram of a fifth structure of a battery connector provided in an embodiment of the present application.
  • FIG16 is a fifth structural schematic diagram of a battery cell and a connector provided in an embodiment of the present application.
  • FIG. 17 is a fifth structural schematic diagram of a battery provided in an embodiment of the present application.
  • the protection board assembly is usually used to connect with the pole ear of the battery cell and transfer to the electronic device to power the electronic device.
  • the protection board assembly can protect the battery cell.
  • the size of the protection board assembly is positively correlated with the magnitude of the overcurrent, that is, the greater the current flowing through the protection board assembly, the greater the thickness of the protection board assembly, and correspondingly, the greater the proportion of the battery occupied by the protection board, resulting in a smaller proportion of the battery cell, that is, the capacity of the battery cell is smaller, affecting the endurance of the electronic device.
  • the present application provides a battery and an electronic device, wherein the battery comprises a cell, a connector and a protection board assembly, wherein the cell comprises a cell body and two pole ears connected to the cell body, wherein the connector comprises two connecting pole ears and a connecting portion connecting the two connecting pole ears, wherein one connecting pole ear is connected to one of the pole ears and is electrically conductive to form a composite pole ear; the composite pole ear and the other pole ear are both connected to the protection board assembly to form a first circuit; the other connecting pole ear and the other pole ear are both connected to the protection board assembly to form a second circuit.
  • one connecting pole ear is connected to one of the pole ears to form a composite pole ear, so that the composite pole ear can be connected to the cell body through the connecting portion; the composite pole ear and the other pole ear are connected to the protection board assembly to form a first circuit, and the other connecting pole ear and the other pole ear are connected to the protection board assembly to form a second circuit, and the first circuit and the second circuit can form two parallel current circuits, that is, the protection board assembly and the cell form a parallel double circuit, which can reduce the single circuit current size of the protection board assembly, reduce the size of the protection board assembly, increase the accommodating size of the battery, and increase the capacity of the cell, that is, increase Liter battery capacity.
  • FIG. 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.
  • an embodiment of the present application provides an electronic device 100, which may be a portable electronic device 100 such as a mobile phone, a tablet computer, a laptop computer, or a personal digital assistant, or may be any device having a battery 200 such as an electric vehicle power supply, a motor vehicle power supply, or a power bank.
  • a portable electronic device 100 such as a mobile phone, a tablet computer, a laptop computer, or a personal digital assistant
  • a battery 200 such as an electric vehicle power supply, a motor vehicle power supply, or a power bank.
  • the embodiment of the present application does not limit the specific form of the electronic device 100, nor is it limited to the above examples.
  • the following description will be given by taking the electronic device 100 as a mobile phone as an example.
  • the electronic device 100 may include a housing 110 and an electronic component 120 located in the housing 110, wherein the electronic component 120 may be a display screen, a processor, a storage, a camera, a microphone, a speaker, etc. It is understandable that other electronic components 120 may be provided in the electronic device 100, and the embodiments of the present application will not be described one by one.
  • the display screen displays videos, images, or text information
  • the processor processes and executes the received operation signals, or the speaker plays audio signals, etc., all of which consume electrical energy.
  • the user needs to consume electrical energy when using the above-mentioned electronic device 100.
  • the electronic device 100 further includes a battery 200.
  • the battery 200 may be arranged in The housing 110 is provided with electrical energy required for the electronic components 120 in the housing 110 to operate.
  • the battery 200 can be connected to the electronic device 100 in a detachable manner, for example, a back cover is provided on either side of the housing 110 of the electronic device 100, the back cover is detachably connected to the housing 110, and the battery 200 is installed to the electronic device 100 through the back cover; of course, in order to improve the portability of the electronic device 100, the battery 200 can also be directly built into the housing of the electronic device 100. That is to say, when the electronic device 100 is produced, the battery 200 can be directly encapsulated inside the housing 110 of the electronic device 100, so that on the one hand, the portability of the electronic device 100 can be improved, and on the other hand, the stability of the electrical connection between the battery 200 and the electronic device 100 can also be improved.
  • the embodiment of the present application does not limit the connection method and position of the battery 200 in the electronic device 100, nor is it limited to the above examples.
  • Fig. 2 is a schematic diagram of the structure of a battery cell provided in an embodiment of the present application
  • Fig. 3 is a schematic diagram of the first structure of a connector of a battery provided in an embodiment of the present application
  • Fig. 4 is a schematic diagram of the first structure of a battery cell and a connector provided in an embodiment of the present application
  • Fig. 5 is a schematic diagram of the first structure of a battery provided in an embodiment of the present application
  • Fig. 6 is a schematic diagram of the second structure of a connector of a battery provided in an embodiment of the present application
  • Fig. 7 is a schematic diagram of the second structure of a battery cell and a connector provided in an embodiment of the present application
  • Fig. 1 is a schematic diagram of the structure of a battery cell and a connector provided in an embodiment of the present application
  • Fig. 8 is a schematic diagram of the second structure of a battery provided in an embodiment of the present application
  • Fig. 9 is a schematic diagram of the third structure of a connector of a battery provided in an embodiment of the present application
  • Fig. 10 is a schematic diagram of the first structure of a battery provided in an embodiment of the present application.
  • Figure 11 is the third structural schematic diagram of the battery provided in the embodiment of the present application
  • Figure 12 is the fourth structural schematic diagram of the connecting parts of the battery provided in the embodiment of the present application
  • Figure 13 is the fourth structural schematic diagram of the battery cell and the connecting parts provided in the embodiment of the present application
  • Figure 14 is the fourth structural schematic diagram of the battery provided in the embodiment of the present application
  • Figure 15 is the fifth structural schematic diagram of the connecting parts of the battery provided in the embodiment of the present application
  • Figure 16 is the fifth structural schematic diagram of the battery cell and the connecting parts provided in the embodiment of the present application
  • Figure 17 is the fifth structural schematic diagram of the battery provided in the embodiment of the present application.
  • an embodiment of the present application provides a battery 200, including a battery cell 210, which may be an aluminum shell battery cell, a soft pack battery cell, or a cylindrical battery cell.
  • a battery cell 210 which may be an aluminum shell battery cell, a soft pack battery cell, or a cylindrical battery cell.
  • the battery cell may be an aluminum shell battery cell
  • the battery cell 210 may be a cylindrical battery cell.
  • the embodiment of the present application does not limit the specific type of the battery cell 210, nor is it limited to the above examples.
  • the battery cell 210 includes a battery cell body 211 and two tabs 212 connected to the battery cell body 211.
  • the two tabs 212 can be disposed on one side of the battery cell body 211. end to facilitate the connection of the two pole ears 212.
  • the polarities of the two pole ears 212 are opposite.
  • one pole ear 212 is a positive pole ear 212 and the other pole ear 212 is a negative pole ear 212.
  • the embodiment of the present application does not limit the specific polarities of the two pole ears 212, nor is it limited to the above example.
  • the battery 200 also includes a protection board assembly 220, which can be connected to the pole ear 212 and the electronic component 120 of the electronic device 100 to achieve the switching of the battery cell 210.
  • the protection board assembly 220 can protect the battery cell 210.
  • the internal circuit of the protection board assembly 220 will be automatically cut off, thereby avoiding overcharging; for example, when the battery 200 is over-discharged, the discharge circuit on the protection board assembly 220 will be automatically cut off, which can ensure that the battery 200 is not completely discharged.
  • the protection board assembly 220 can isolate multiple batteries 200 to avoid short circuits.
  • the battery 200 may also include a connector 230, the connector 230 includes a connecting pole ear 231 and a connecting portion 232, the number of the connecting pole ears 231 is two, the connecting portion 232 connects the two connecting pole ears 231, one of the connecting pole ears 231 is connected to one of the pole ears 212 and is electrically conductive, and forms a composite pole ear 240, that is, the composite pole ear 240 is electrically conductive with the battery body 211; the composite pole ear 240 and the other pole ear 212 are both connected to the protection plate assembly 220 The other connecting ear 231 and the other ear 212 are connected to the protection board assembly 220 to form a second circuit.
  • the first circuit and the second circuit can form two parallel current circuits, that is, the protection board assembly 220 and the battery cell 210 form a parallel double circuit, which can reduce the single circuit current of the protection board assembly 220, reduce the size of the protection board assembly 220, increase the accommodating size of the battery 200, and increase the capacity of the battery cell 210, that is, increase the capacity of the battery 200.
  • the number of connectors 230 can also be multiple.
  • the number of connectors 230 is two, there are two pairs of connecting pole ears 231, and one of the connecting pole ears 231 in each pair is connected to one of the pole ears 212 to form a composite pole ear 240.
  • the composite pole ear 240 is connected to the other pole ear 212 to form a current loop, and the other connecting pole ear 231 in each pair is connected to the other pole ear 212 to form two parallel current loops, thereby forming three parallel current loops.
  • Another exemplary embodiment is that when the number of connectors 230 is three, there are three pairs of connecting pole ears 231, and one of the connecting pole ears 231 in each pair is connected to one of the pole ears 212 to form a composite pole ear 240.
  • the composite pole ear 240 is connected to the other pole ear 212 to form a current loop.
  • Another connecting tab 231 in the pair is connected to another tab 212 to form three parallel current loops, thereby forming four parallel current loops.
  • the embodiment of the present application does not limit the number of the connecting members 230, nor is it limited to the above examples.
  • the following description takes the case where the number of the connecting member 230 is one as an example.
  • connection portion 232 includes a connection portion body 2321 and a boss 2322 .
  • connecting part body 2321 and the boss 2322 can be integrally formed to improve the structural stability of the connecting part 232 and facilitate processing.
  • the connecting part body 2321 and the boss 2322 can also be connected by welding or bonding.
  • the preparation material of the connection part body 2321 and the boss 2322 can be selected from metals with conductive function
  • the preparation material of the ear 212 can also be selected from metals with conductive function
  • the preparation material of the connector 230 can be selected from metals with conductive function, such as copper, nickel, etc.
  • the embodiment of the present application does not limit the preparation material of the above structure, nor is it limited to the above examples.
  • the connecting part body 2321 can be connected to two connecting pole ears 231, and the two connecting pole ears 231 can be respectively located on opposite sides of the connecting part body 2321, or respectively located on adjacent sides of the connecting part body 2321, or located on the same side of the connecting part body 2321.
  • the embodiment of the present application does not limit the positional relationship between the connecting pole ears 231 and the connecting part body 2321, nor is it limited to the above examples.
  • the boss 2322 is connected to the cell body 211 to achieve electrical conduction between the connector 230 and the cell body 211. It is understandable that the boss 2322 can be bent, the cell body 211 has a groove (not shown in the figure) corresponding to the boss 2322, the boss 2322 is located in the groove, and contacts the inner wall and/or bottom wall of the groove to achieve connection between the boss 2322 and the cell body 211, thereby achieving electrical conduction between the connector 230 and the cell body 211.
  • the boss 2322 is located at a position on the connecting portion body 2321 corresponding to any one of the two connecting pole ears 231, and is located on a side of the connecting portion body 2321 close to the battery cell body 211.
  • the two connecting pole ears 231 can be located on a side of the connecting portion body 2321 away from the battery cell body 211, and the boss 2322 is located on a side of the connecting portion body 2321 close to the battery cell body 211, that is, the boss 2322 and the two connecting pole ears 231 are respectively located on opposite sides of the connecting portion body 2321, and the boss 2322 corresponds to any one of the connecting pole ears 231, that is, the boss 2322
  • the extension direction of the connecting pole ear 231 can be the same straight line as the extension direction of the corresponding connecting pole ear 231, and intersects with the extension direction of the connecting part body 2321.
  • the connecting pole ear 231 corresponding to the boss 2322 can be connected to one of the pole ears 212 and electrically conductive to form a composite pole ear 240.
  • the composite pole ear 240 is connected to the battery cell body 211 through the boss 2322 that is closer, and is connected to the other pole ear 212 and the protection plate assembly 220 to form a first loop, and the current flow efficiency is relatively high; the connecting pole ear 231 that does not correspond to the boss 2322 is connected to the other pole ear 212 and the protection plate assembly 220 to form a second loop.
  • the first loop and the second loop can form two parallel current loops, that is, the protection plate assembly 220 and the battery cell 210 form a parallel double loop, which can reduce the single loop current of the protection plate assembly 220, and the size of the protection plate assembly 220 can be reduced, which can increase the accommodating size of the battery 200 and increase the capacity of the battery cell 210, that is, increase the capacity of the battery 200.
  • the boss 2322 is located on the connecting portion body 2321 between the two connecting pole ears 231. Specifically, the boss 2322 is located on the corresponding connecting portion body 2321 between the two pole ears 212, that is, the boss 2322 does not correspond to any connecting pole ear 231. At this time, any connecting pole ear 231 can be connected to one of the pole ears 212 and electrically conductive to form a composite pole ear 240. The composite pole ear 240 is connected to the battery body 211 through the boss 2322 located at the connecting portion body 2321.
  • the first circuit and the second circuit can form two parallel current circuits, that is, the protection plate assembly 220 and the battery cell 210 form a parallel double circuit, which can reduce the single circuit current of the protection plate assembly 220, and the size of the protection plate assembly 220 can be reduced, which can increase the accommodating size of the battery 200 and increase the capacity of the battery cell 210, that is, increase the capacity of the battery 200.
  • the boss 2322 is located on the side of the connecting part body 2321 close to the battery cell body 211, that is, the two connecting pole ears 231 can be located on the side of the connecting part body 2321 away from the battery cell body 211, and the boss 2322 is located on the side of the connecting part body 2321 close to the battery cell body 211, that is, the boss 2322 and the two connecting pole ears 231 are respectively located on the opposite sides of the connecting part body 2321.
  • the boss 2322 is close to the battery cell body 211, and correspondingly, the depth of the groove of the battery cell body 211 corresponding to the boss 2322 is larger, the length required for the boss 2322 to bend into the groove is larger, and the contact area between the boss 2322 and the groove is larger, that is, the connection between the boss 2322 and the battery cell body 211 is more stable, which is convenient for current conduction.
  • the boss 2322 is located on the connecting portion body 2321.
  • the side away from the battery cell body 211 that is, the two connecting ears 231 can be located on the side of the connecting part body 2321 away from the battery cell body 211
  • the boss 2322 is located on the side of the connecting part body 2321 away from the battery cell body 211, that is, the boss 2322 and the two connecting ears 231 are both located on the side of the connecting part body 2321 away from the battery cell body 211
  • the boss 2322 is located between the two connecting ears 231, and the boss 2322 is away from the battery cell body 211.
  • the depth of the groove of the battery cell body 211 corresponding to the boss 2322 is smaller, and the length required for the boss 2322 to bend into the groove is smaller, which is convenient for the connection between the boss 2322 and the battery cell body 211, that is, the connection between the connector 230 and the battery cell body 211.
  • one of the connecting pole ears 231 is stacked and connected with one of the pole ears 212 to form a composite pole ear 240, which can reduce the space occupied by the connecting pole ear 231 and increase the contact area between the connecting pole ear 231 and the pole ear 212, thereby improving the structural stability of the composite pole ear 240.
  • the protection board assembly 220 includes a circuit board 221, a first conductive member 222, a second conductive member 223 and a third conductive member 224, the first conductive member 222 is connected to the composite pole ear 240, the second conductive member 223 is connected to another pole ear 212, and the third conductive member 224 is connected to another connecting pole ear 231.
  • the circuit board 221, the first conductive member 222, the second conductive member 223, the composite pole ear 240 and another pole ear 212 form a first loop
  • the circuit board 221, the second conductive member 223, the third conductive member 224, another pole ear 212 and another connecting pole ear 231 form a second loop.
  • the first loop and the second loop can form two parallel current loops, that is, the protection board assembly 220 and the battery cell 210 form a parallel double loop, which can reduce the single loop current size of the protection board assembly 220, and the size of the protection board assembly 220 can be reduced, which can increase the accommodating size of the battery 200 and the capacity of the battery cell 210, that is, increase the capacity of the battery 200.
  • first conductive member 222 , the second conductive member 223 and the third conductive member 224 are all electrically connected to the circuit board 221 .
  • first conductive member 222 , the second conductive member 223 and the third conductive member 224 are all fixed to the circuit board 221 by welding to achieve circuit conduction.
  • the materials used to prepare the first conductive member 222, the second conductive member 223 and the third conductive member 224 may be the same or different, but they are all conductive materials, such as copper, nickel and other metals.
  • the embodiments of the present application do not limit the materials used to prepare the first conductive member 222, the second conductive member 223 and the third conductive member 224, nor are they limited to the above examples.
  • the circuit board 221 may have a first external connection member 225 and a second external connection member 226 connected to the first circuit and the second circuit respectively, so that the first external connection member 225 and the second external connection member 226 can be connected to the first circuit and the second circuit respectively.
  • the current in the cell body 211 is electrically connected to other electronic components 120 .
  • the battery 200 also includes an insulating layer 250, which covers both sides of the connecting portion 232.
  • the edge of the insulating layer 250 protrudes from the edge of the connecting portion 232.
  • the insulating layer 250 may only cover the surfaces on the two opposite sides of the connecting portion body 2321 to prevent the connecting portion body 2321 from being directly connected to the tab 212 or the cell body 211 or other electronic components 120 and causing a short circuit.
  • the edge of the insulating layer 250 protrudes from the edge of the connecting portion 232 by a size of 0.2 mm-1.0 mm.
  • the edge of the insulating layer 250 protrudes from the edge of the connection body 2321 to reduce the possibility of a short circuit caused by direct connection between the connection body 2321 and the tab 212 or the cell body 211 or other electronic components 120.
  • the size range of the edge of the insulating layer 250 protruding from the edge of the connection body 2321 can be 0.2mm-1.0mm.
  • the extension directions of the connecting lug 231 and the connecting part body 2321 intersect, and a first notch 233 is provided at the corner of the connection between the connecting lug 231 and the connecting part body 2321, and/or, referring to Figures 3 and 12, at least one lug 212 is located between two connecting lugs 231, and the orthographic projection of the lug 212 on the plane where the connecting part body 2321 is located overlaps with at least part of the connecting part body 2321, and a second notch 234 is provided on the connecting part body 2321 located in the overlapping area, and/or a third notch 235 is provided at at least one corner of the connection between the boss 2322 and the connecting part body 2321.
  • the connecting member 230 may have only the first notch 233 to prevent the connecting member 230 from tearing, or may have only the second notch 234 to provide bending space for the pole ear 212, or may have only the third notch 235 to facilitate the bending of the boss 2322, or may have both the first notch 233 and the second notch 234, or may have both the first notch 233 and the third notch 235, or may have both the first notch 233, the second notch 234 and the third notch 235.
  • the first notch 233 is located at the corner of the connection between the connecting tab 231 and the connecting portion body 2321, that is, the number of the first notches 233 is the same as the number of the connecting tabs 231.
  • the first notch 233 may also be provided at the corner of the connection between the boss 2322 and the connecting portion body 2321; that is, when a connector 230 has two connecting tabs 231, the two connecting tabs 231 and the boss 2322 are connected to the connecting portion body 2321.
  • the first notches 233 are formed at the corners of the connection of the connecting body 2321 to prevent the connecting member 230 from being torn.
  • first notch 233 can be square, circular, semicircular, etc.
  • the embodiment of the present application does not limit the shape of the first notch 233, nor is it limited to the above examples.
  • the shapes of the second notch 234 and the third notch 235 can be the same as the first notch 233, or different, and will not be described in detail below.
  • a second notch 234 can be provided at a position of the connecting portion 232 corresponding to the pole lug 212. Furthermore, the second notch 234 can be provided at a position of the connecting portion body 2321 corresponding to the pole lug 212.
  • the second notch 234 can be provided at a position of the connecting portion 232 corresponding to the pole lug 212 to avoid contact between the bent pole lug 212 and the connecting portion 232, thereby providing a bending space for the pole lug 212.
  • the connector 230 can be located on the side where the bending direction of the pole ear 212 is located, or on the side away from the bending direction of the pole ear 212. That is, when the connector 230 is located on the side where the bending direction of the pole ear 212 is located, the connector 230 is located between the bent pole ears 212. At this time, the connector 230 can be provided with a second notch 234 for the pole ear 212 to bend.
  • a third notch 235 is provided at the corner of the connection between the boss 2322 and the connecting part body 2321.
  • the number of the third notch 235 is one; when the boss 2322 is connected to the middle position of the connecting part body 2321, the number of the third notch 235 is two, and the two third notches 235 are respectively located on both sides of the boss 2322.
  • the insulating layer 250 may cover the connecting portion body 2321 and the first notch 233 and/or the second notch 234 and/or the third notch 235 .
  • the connector 230 is a flexible connector, and a portion of the connector 230 is bent and connected to the battery cell body 211 .
  • connection member 230 is made of a flexible material for easy bending, wherein the bent portion may be a boss 2322 , which is bent and connected to the cell body 211 to fix the connection member 230 .
  • part of the connector 230 is bent and enters the top-sealed deep pit surface of the battery cell body 211 (not shown in the figure); or, part of the connector 230 is bent and enters the top-sealed shallow pit surface of the battery cell body 211.
  • a packaging process is usually required, and a deep pit surface and a shallow pit surface are formed on the top seal of the battery cell body 211 .
  • part of the connector 230 is a boss 2322, that is, the boss 2322 can be bent into the deep pit surface of the top seal, or into the shallow pit surface of the top seal, to connect to the battery body 211, thereby fixing the connector 230 and improving the connection stability between the connector 230 and the battery cell 210.
  • the connector 230 is fixedly connected to the top seal of the battery cell body 211 by double-sided adhesive tape or adhesive tape or glue. That is, the boss 2322 is fixedly connected to the top seal of the battery cell body 211 by double-sided adhesive tape, or by adhesive tape, or by glue, so as to connect the battery cell body 211, fix the connector 230, and improve the connection stability between the connector 230 and the battery cell 210.
  • connection part 232 is bonded to the battery cell 210 by a fixing glue.
  • the fixing glue can be located on a surface of the connection part body 2321 close to the battery cell 210 and located at an end of the battery cell body 211 close to the side where the pole ear 212 is located, so as to fix the connection part 230. It can be immediately understood that the fixing glue is one of double-sided tape, adhesive tape and glue.
  • the fixing glue can be an insulating glue, that is, while fixing the connector 230, it prevents the connection body 2321 from being directly connected to the tab 212 or the cell body 211 or other electronic components 120 to cause a short circuit.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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  • Connection Of Batteries Or Terminals (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

一种电池及电子设备，电池包括电芯、连接件和保护板组件，电芯包括电芯本体以及与电芯本体连接的两个极耳，连接件包括两个连接极耳以及连接两个连接极耳的连接部，其中一个连接极耳与其中一个极耳连接且电导通，并形成复合极耳；复合极耳和另一个极耳均与保护板组件连接，并形成第一回路；另一个连接极耳和另一个极耳均与保护板组件连接，并形成第二回路。通过设置具有两个连接极耳的连接件，可以形成并联的第一回路与第二回路，即保护板组件与电芯形成并联的双回路，可以降低保护板组件的单一回路电流大小，保护板组件的尺寸可以减小，可以提升电池的可容置尺寸，提升电芯的容量，提升电池容量。

Description

电池及电子设备
本申请要求于2022年11月07日提交中国专利局、申请号为202222954173.X、申请名称为“电池及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池领域，尤其涉及一种电池及电子设备。
背景技术
随着科技发展，以电池为代表的电化学装置受到广泛应用，例如，锂离子电池具有容量大、体积小、重量轻和绿色环保等优点，已广泛应用于数码电子产品和电动汽车等行业中。
相关技术中，由于锂电池本身的材料决定了它不能被过充、过放、过流、短路及超高温充放电，因此锂电池通常会设置一块电池保护板进行监测和保护。随着快充技术越来越普及，对电池及保护板的过流要求也越来越高，为了较高的过流保护效果，保护板的尺寸相应设置较大。
但是，上述方案中的电池的容量偏小，影响电子设备的续航能力。
实用新型内容
为了解决背景技术中提到的至少一个问题，本申请提供一种电池及电子设备，旨在解决相关技术中电池的容量偏小，影响电子设备的续航能力的技术问题。
为了实现上述目的，第一方面，本申请提供了一种电池，包括电芯、连接件和保护板组件，所述电芯包括电芯本体以及与所述电芯本体连接的两个极耳，所述连接件包括两个连接极耳以及连接两个所述连接极耳的连接部，其中一个所述连接极耳与其中一个所述极耳连接且电导通，并形成复合极耳；
所述复合极耳和另一个所述极耳均与所述保护板组件连接，并形成第一回路；另一个所述连接极耳和另一个所述极耳均与所述保护板组件连接，并形成第二回路。
在上述的电池，可选的是，所述连接部包括一体成型的连接部本体和凸 台，所述连接部本体连接两个所述连接极耳，所述凸台与所述电芯本体连接。
在上述的电池，可选的是，所述凸台位于所述连接部本体上与两个所述连接极耳中任一者对应的位置，且位于所述连接部本体靠近所述电芯本体的一侧。
在上述的电池，可选的是，所述凸台位于两个所述连接极耳之间的所述连接部本体上；
或者，所述凸台位于所述连接部本体靠近所述电芯本体的一侧；
或者，所述凸台位于所述连接部本体远离所述电芯本体的一侧。
在上述的电池，可选的是，其中一个所述连接极耳与其中一个所述极耳层叠连接，形成所述复合极耳。
在上述的电池，可选的是，所述保护板组件包括电路板、第一导电件、第二导电件和第三导电件，所述第一导电件连接另一个所述复合极耳，所述第二导电件连接另一个所述极耳，所述第三导电件连接另一个所述连接极耳，
所述电路板、所述第一导电件、所述第二导电件、所述复合极耳以及另一个所述极耳形成所述第一回路；
所述电路板、所述第二导电件、所述第三导电件、另一个所述极耳以及另一个所述连接极耳形成所述第二回路。
在上述的电池，可选的是，还包括绝缘层，所述绝缘层覆盖于所述连接部两侧，沿所述连接部的延伸方向，所述绝缘层的边缘凸出所述连接部的边缘。
在上述的电池，可选的是，所述绝缘层的边缘凸出所述连接部的边缘的尺寸为0.2mm-1.0mm。
在上述的电池，可选的是，所述连接极耳与所述连接部本体的延伸方向交叉，所述连接极耳与所述连接部本体的连接处的拐角处开设有第一缺口；
和/或，至少一个所述极耳位于两个所述连接极耳之间，所述极耳在所述连接部本体所在平面的正投影与至少部分所述连接部本体重合，位于重合区域内的所述连接部本体上开设有第二缺口；
和/或，所述凸台与所述连接部本体的连接处的至少一处拐角处开设有第三缺口。
在上述的电池，可选的是，所述连接件为柔性连接件，且部分所述连接 件弯折，并与所述电芯本体连接。
在上述的电池，可选的是，部分所述连接件弯折，并进入所述电芯本体的顶封深坑面；
或者，部分所述连接件弯折，并进入所述电芯本体的顶封浅坑面。
在上述的电池，可选的是，所述连接件通过双面胶或胶纸或胶水与所述电芯本体的顶封固定连接。
第二方面，本申请还提供了一种电子设备，包括壳体以及所述的电池，所述电池位于所述壳体内。
本申请提供的电池及电子设备，通过设置具有两个连接极耳的连接件，将其中一个连接极耳与其中一个极耳连接形成复合极耳，以使得复合极耳可以通过连接部与电芯本体连接；复合极耳和另一个极耳与保护板组件连接形成第一回路，另一个连接极耳和另一个极耳与保护板组件连接形成第二回路，第一回路与第二回路可以形成两个并联的电流回路，即保护板组件与电芯形成并联的双回路，可以降低保护板组件的单一回路电流大小，保护板组件的尺寸可以减小，可以提升电池的可容置尺寸，提升电芯的容量，即提升电池容量。
本申请的构造以及它的其他申请目的及有益效果会通过结合附图而优选实施例的描述而更加明显易懂。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作以简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的电子设备的结构示意图；
图2为本申请实施例提供的电池的电芯的结构示意图；
图3为本申请实施例提供的电池的连接件的第一种结构示意图；
图4为本申请实施例提供的电池的电芯以及连接件的第一种结构示意图；
图5为本申请实施例提供的电池的第一种结构示意图；
图6为本申请实施例提供的电池的连接件的第二种结构示意图；
图7为本申请实施例提供的电池的电芯以及连接件的第二种结构示意图；
图8为本申请实施例提供的电池的第二种结构示意图；
图9为本申请实施例提供的电池的连接件的第三种结构示意图；
图10为本申请实施例提供的电池的电芯以及连接件的第三种结构示意图；
图11为本申请实施例提供的电池的第三种结构示意图；
图12为本申请实施例提供的电池的连接件的第四种结构示意图；
图13为本申请实施例提供的电池的电芯以及连接件的第四种结构示意图；
图14为本申请实施例提供的电池的第四种结构示意图；
图15为本申请实施例提供的电池的连接件的第五种结构示意图；
图16为本申请实施例提供的电池的电芯以及连接件的第五种结构示意图；
图17为本申请实施例提供的电池的第五种结构示意图。
附图标记说明：
100-电子设备；
110-壳体；
120-电子元件；
200-电池；
210-电芯；
211-电芯本体；
212-极耳；
220-保护板组件；
230-连接件；
231-连接极耳；
232-连接部；
240-复合极耳；
2321-连接部本体；
2322-凸台；
221-电路板；
222-第一导电件；
223-第二导电件；
224-第三导电件；
225-第一外接件；
226-第二外接件；
250-绝缘层；
233-第一缺口；
234-第二缺口；
235-第三缺口。
通过上述附图，已示出本申请明确的实施例，后文中将有更详细的描述。这些附图和文字描述并不是为了通过任何方式限制本申请构思的范围，而是通过参考特定实施例为本领域技术人员说明本申请的概念。
具体实施方式
相关技术中，保护板组件通常用于与电芯的极耳连接并转接到电子设备以对电子设备进行供电，保护板组件可以对电芯起到保护作用。保护板组件的尺寸与过流的电流大小呈正相关，即保护板组件流经的电流越大，保护板组件的厚度越大，对应地，保护板所占电池的比例越大，造成电芯所占的比例较小，即电芯的容量较小，影响电子设备的续航能力。
基于上述的技术问题，本申请提供了一种电池及电子设备，电池包括电芯、连接件和保护板组件，电芯包括电芯本体以及与电芯本体连接的两个极耳，连接件包括两个连接极耳以及连接两个连接极耳的连接部，其中一个连接极耳与其中一个极耳连接且电导通，并形成复合极耳；复合极耳和另一个极耳均与保护板组件连接，并形成第一回路；另一个连接极耳和另一个极耳均与保护板组件连接，并形成第二回路。通过设置具有两个连接极耳的连接件，将其中一个连接极耳与其中一个极耳连接形成复合极耳，以使得复合极耳可以通过连接部与电芯本体连接；复合极耳和另一个极耳与保护板组件连接形成第一回路，另一个连接极耳和另一个极耳与保护板组件连接形成第二回路，第一回路与第二回路可以形成两个并联的电流回路，即保护板组件与电芯形成并联的双回路，可以降低保护板组件的单一回路电流大小，保护板组件的尺寸可以减小，可以提升电池的可容置尺寸，提升电芯的容量，即提 升电池容量。
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请的优选实施例中的附图，对本申请实施例中的技术方案进行更加详细的描述。在附图中，自始至终相同或类似的标号表示相同或类似的部件或具有相同或类似功能的部件。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。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。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。下面结合附图对本申请的实施例进行详细说明。
在本申请实施例的描述中，需要理解的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应作广义理解，例如，可以是固定连接，也可以是通过中间媒介间接相连，可以是两个元件内部的连通或者两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
图1为本申请实施例提供的电子设备的结构示意图。
第一方面，参照附图1所示，本申请实施例提供了一种电子设备100，电子设备100可以是手机、平板电脑、笔记本电脑或者个人数字助理等便携式电子设备100，也可以是电动车电源、机动车电源、充电宝等任意具有电池200的装置。本申请实施例对电子设备100的具体形式并不加以限定，也不局限于上述示例。
以下以电子设备100为手机为例进行说明。
可以理解的是，电子设备100可以包括壳体110以及位于壳体110内的电子元件120，其中，电子元件120可以是显示屏幕、处理器、储存器、摄像头、麦克风以及扬声器等。可以理解的是，在电子设备100中还可以设置其他电子元件120，本申请实施例对此不再一一赘述。
需要注意的是，上述电子元件120在工作时，例如，显示屏幕对视频、图像，或者文字信息进行显示，或者处理器对接收到的操作信号进行处理并执行，再或者扬声器对音频信号进行播放等均需要消耗电能，也就是说，用户在使用前述电子设备100时，需要消耗电能。
参照附图1所示，电子设备100还包括电池200，电池200可以设置在 壳体110内，以对壳体110内的电子元件120提供工作所需要的电能。
可以理解的是，电池200可以是以可拆卸的方式与电子设备100连接，例如，在电子设备100壳体110的任一侧设置后盖，后盖与壳体110可拆卸连接，电池200通过后盖安装至电子设备100；当然，为了提高电子设备100的便携性，电池200也可以是直接内置在电子设备100的外壳内。也就是说，在生产电子设备100时，可以直接将电池200封装在电子设备100的壳体110内部，这样，一方面能够提高电子设备100的便携性，另一方面，也能够提高电池200与电子设备100电连接的稳定性。本申请实施例对电池200在电子设备100中的连接方式以及位置均不加以限定，也不局限于上述示例。
图2为本申请实施例提供的电池的电芯的结构示意图；图3为本申请实施例提供的电池的连接件的第一种结构示意图；图4为本申请实施例提供的电池的电芯以及连接件的第一种结构示意图；图5为本申请实施例提供的电池的第一种结构示意图；图6为本申请实施例提供的电池的连接件的第二种结构示意图；图7为本申请实施例提供的电池的电芯以及连接件的第二种结构示意图；图8为本申请实施例提供的电池的第二种结构示意图；图9为本申请实施例提供的电池的连接件的第三种结构示意图；图10为本申请实施例提供的电池的电芯以及连接件的第三种结构示意图；图11为本申请实施例提供的电池的第三种结构示意图；图12为本申请实施例提供的电池的连接件的第四种结构示意图；图13为本申请实施例提供的电池的电芯以及连接件的第四种结构示意图；图14为本申请实施例提供的电池的第四种结构示意图；图15为本申请实施例提供的电池的连接件的第五种结构示意图；图16为本申请实施例提供的电池的电芯以及连接件的第五种结构示意图；图17为本申请实施例提供的电池的第五种结构示意图。
第二方面，参照附图2-附图17所示，本申请实施例提供了一种电池200，包括电芯210，电芯210可以是铝壳电芯、软包电芯或者圆柱电芯等。在一些具体示例中，例如电子设备100为手机时，电可以为铝壳电芯，而在电子设备100为笔记本电脑时，电芯210可以采用圆柱电芯。本申请实施例对电芯210的具体类型并不加以限定，也不局限于上述示例。
具体地，参照附图2所示，电芯210包括电芯本体211以及与电芯本体211连接的两个极耳212，两个极耳212可以均设置在电芯本体211的其中一 端，以便于两个极耳212的连接。
可以理解的是，两个极耳212的极性相反，示例性的，其中一个极耳212为正极极耳212，另一个极耳212为负极极耳212，本申请实施例对两个极耳212具体极性并不加以限定，也不局限于上述示例。
具体地，参照附图-附图17所示，电池200还包括保护板组件220，保护板组件220可以与极耳212连接，并与电子设备100的电子元件120连接，以实现电芯210的转接。保护板组件220可以对电芯210起到保护作用，例如，在外部电源对电池200进行充电，并且电池200内部达到保护状态时，保护板组件220内部电路会自动切断，从而能够避免过充；例如，在电池200过放电时，保护板组件220上的放电电路会自动切断，能够保证电池200不至于全部放电，当然，也能够确保电池200内部电流稳定，避免电池200放电过热；另外，保护板组件220可以隔离多个电池200，避免造成短路。
具体地，参照附图-附图17所示，电池200还可以包括连接件230，连接件230包括连接极耳231以及连接部232，连接极耳231的数量为两个，连接部232连接两个连接极耳231，其中一个连接极耳231与其中一个极耳212连接且电导通，并形成复合极耳240，即复合极耳240与电芯本体211电导通；复合极耳240和另一个极耳212均与保护板组件220连接，并形成第一回路；另一个连接极耳231和另一个极耳212均与保护板组件220连接，并形成第二回路，第一回路与第二回路可以形成两个并联的电流回路，即保护板组件220与电芯210形成并联的双回路，可以降低保护板组件220的单一回路电流大小，保护板组件220的尺寸可以减小，可以提升电池200的可容置尺寸，提升电芯210的容量，即提升电池200容量。
可以理解的是，连接件230的数量也可以为多个，示例性的，当连接件230的数量为两个时，即对应具有两对连接极耳231，每对中的其中一个连接极耳231均与其中一个极耳212连接，形成复合极耳240，复合极耳240与另外一个极耳212连接形成电流回路，每对中的另外一个连接极耳231均与另外一个极耳212连接形成两个并联的电流回路，进而形成三个并联的电流回路；又一示例性的，当连接件230的数量为三个时，即对应具有三对连接极耳231，每对中的其中一个连接极耳231均与其中一个极耳212连接，形成复合极耳240，复合极耳240与另外一个极耳212连接形成电流回路，每 对中的另外一个连接极耳231均与另外一个极耳212连接形成三个并联的电流回路，进而形成四个并联的电流回路。本申请实施例对连接件230的数量并不加以限定，也不局限于上述示例。
以下以连接件230的数量为一个为例进行说明。
作为一种可选的实施方式，参照附图3、附图6、附图9、附图12、附图15所示，连接部232包括连接部本体2321和凸台2322。
可以理解的是，连接部本体2321可以与凸台2322为一体成型的结构，以提升连接部232的结构稳定性，且便于加工。当然，连接部本体2321和凸台2322也可以采用焊接或者粘接的方式连接。
进一步地，连接部本体2321与凸台2322的制备材料可以选择具备导电功能的金属，极耳212的制备材料同样可以选择具有导电功能的金属，即连接件230的制备材料可以选择具有导电功能的金属，如铜、镍等，本申请实施例对上述结构的制备材料并不加以限定，也不局限于上述示例。
具体地，连接部本体2321可以连接两个连接极耳231，两个连接极耳231可以分别位于连接部本体2321的相对两侧，也可以分别位于连接部本体2321的相邻两侧，还可以位于连接部本体2321的同一侧，本申请实施例对连接极耳231与连接部本体2321之间的位置关系并不加以限定，也不局限于上述示例。
以下以两个连接极耳231位于连接部本体2321的同一侧为例进行说明。
具体地，凸台2322与电芯本体211连接，以实现连接件230与电芯本体211的电导通。可以理解的是，凸台2322可以弯折，电芯本体211具有与凸台2322对应的凹槽(图中未示出)，凸台2322位于凹槽内，并与凹槽内壁和/或底壁接触，以实现凸台2322与电芯本体211的连接，进而实现连接件230与电芯本体211的电导通。
作为一种可选的实施方式，参照附图3-附图8所示，凸台2322位于连接部本体2321上与两个连接极耳231中任一者对应的位置，且位于连接部本体2321靠近电芯本体211的一侧，具体地，两个连接极耳231可以位于连接部本体2321远离电芯本体211的一侧，凸台2322位于连接部本体2321靠近电芯本体211的一侧，即凸台2322与两个连接极耳231分别位于连接部本体2321的相对两侧，并且，凸台2322与任一连接极耳231对应，即凸台2322 的延伸方向可以对应的连接极耳231的延伸方向为同一直线，且与连接部本体2321的延伸方向相交，此时，凸台2322对应的连接极耳231可以与其中一个极耳212连接且电导通，形成复合极耳240，复合极耳240通过距离较近的凸台2322与电芯本体211连接，并与另一个极耳212以及保护板组件220连接形成第一回路，电流流通的效率较高；未与凸台2322对应的连接极耳231与另一个极耳212以及保护板组件220连接形成第二回路，第一回路与第二回路可以形成两个并联的电流回路，即保护板组件220与电芯210形成并联的双回路，可以降低保护板组件220的单一回路电流大小，保护板组件220的尺寸可以减小，可以提升电池200的可容置尺寸，提升电芯210的容量，即提升电池200容量。
作为一种可选的实施方式，参照附图9-附图17所示，凸台2322位于两个连接极耳231之间的连接部本体2321上，具体地，凸台2322位于两个极耳212之间的对应的连接部本体2321上，即凸台2322未与任一连接极耳231对应，此时，任意一个连接极耳231均可以与其中一个极耳212连接且电导通，形成复合极耳240，复合极耳240通过位于连接部本体2321处的凸台2322与电芯本体211连接，并与另一个极耳212以及保护板组件220连接形成第一回路，另一个连接极耳231与另一个极耳212以及保护板组件220连接形成第二回路，第一回路与第二回路可以形成两个并联的电流回路，即保护板组件220与电芯210形成并联的双回路，可以降低保护板组件220的单一回路电流大小，保护板组件220的尺寸可以减小，可以提升电池200的可容置尺寸，提升电芯210的容量，即提升电池200容量。
进一步地，参照附图9-附图11所示，凸台2322位于连接部本体2321靠近电芯本体211的一侧，即两个连接极耳231可以位于连接部本体2321远离电芯本体211的一侧，凸台2322位于连接部本体2321靠近电芯本体211的一侧，即凸台2322与两个连接极耳231分别位于连接部本体2321的相对两侧，此时，凸台2322靠近电芯本体211，对应地，电芯本体211对应凸台2322的凹槽的深度较大，凸台2322所需要弯折进入凹槽的长度较大，凸台2322与凹槽接触的面积较大，即凸台2322与电芯本体211的连接较稳定，便于电流的导通。
另一方面，参照附图12-附图17所示，凸台2322位于连接部本体2321 远离电芯本体211的一侧，即两个连接极耳231可以位于连接部本体2321远离电芯本体211的一侧，凸台2322位于连接部本体2321远离电芯本体211的一侧，即凸台2322与两个连接极耳231均位于连接部本体2321远离电芯本体211的一侧，且凸台2322位于两个连接极耳231之间，凸台2322远离电芯本体211，对应地，电芯本体211对应凸台2322的凹槽的深度较小，凸台2322所需要弯折进入凹槽的长度较小，便于凸台2322与电芯本体211的连接，即便于连接件230与电芯本体211的连接。
作为一种可选的实施方式，其中一个连接极耳231与其中一个极耳212层叠连接，形成复合极耳240，可以减少连接极耳231所占用的空间，并且，可以提升该连接极耳231与该极耳212之间的接触面积，进而可以提升复合极耳240的结构稳定性。
作为一种可选的实施方式，参照附图3-附图17所示，保护板组件220包括电路板221、第一导电件222、第二导电件223和第三导电件224，第一导电件222连接复合极耳240，第二导电件223连接另一个极耳212，第三导电件224连接另一个连接极耳231，电路板221、第一导电件222、第二导电件223、复合极耳240以及另一个极耳212形成第一回路，电路板221、第二导电件223、第三导电件224、另一个极耳212以及另一个连接极耳231形成第二回路，第一回路与第二回路可以形成两个并联的电流回路，即保护板组件220与电芯210形成并联的双回路，可以降低保护板组件220的单一回路电流大小，保护板组件220的尺寸可以减小，可以提升电池200的可容置尺寸，提升电芯210的容量，即提升电池200容量。
可以理解的是，第一导电件222、第二导电件223以及第三导电件224均电连接在电路板221上，示例性的，第一导电件222、第二导电件223以及第三导电件224均通过焊接固定在电路板221上，以实现电路导通。
需要注意的是，第一导电件222、第二导电件223以及第三导电件224的制备材料可以相同，也可以不同，但均为具有导电能力的材料，如铜、镍等金属，本申请实施例对第一导电件222、第二导电件223以及第三导电件224的制备材料均不加以限定，也不局限于上述示例。
进一步地，电路板221可以具有分别连接第一回路以及第二回路的第一外接件225以及第二外接件226，以通过第一外接件225、第二外接件226将 电芯本体211中的电流与其他电子元件120电导通。
作为一种可选的实施方式，参照附图3、附图6、附图9、附图12以及附图15所示，电池200还包括绝缘层250，绝缘层250覆盖于连接部232两侧，沿连接部232的延伸方向，绝缘层250的边缘凸出连接部232的边缘。
可以理解的是，绝缘层250可以仅覆盖在连接部本体2321的相对两侧表面，以避免连接部本体2321与极耳212或者电芯本体211或者其他电子元件120直接连接发生短路。
作为一种可选的实施方式，绝缘层250的边缘凸出连接部232的边缘的尺寸为0.2mm-1.0mm。
可以理解的是，在沿连接部本体2321的延伸方向上，绝缘层250的边缘凸出连接部本体2321的边缘，以降低连接部本体2321与极耳212或者电芯本体211或者其他电子元件120直接连接发生短路的可能。优选地，绝缘层250的边缘凸出连接部本体2321的边缘的尺寸范围可以为0.2mm-1.0mm。
作为一种可选的实施方式，参照附图3、附图6、附图9、附图12以及附图15所示，连接极耳231与连接部本体2321的延伸方向交叉，连接极耳231与连接部本体2321的连接处的拐角处开设有第一缺口233，和/或，参照附图3、附图12所示，至少一个极耳212位于两个连接极耳231之间，极耳212在连接部本体2321所在平面的正投影与至少部分连接部本体2321重合，位于重合区域内的连接部本体2321上开设有第二缺口234，和/或，凸台2322与连接部本体2321的连接处的至少一处拐角处开设有第三缺口235。即连接件230可以仅具有第一缺口233，用于避免连接件230发生撕裂，也可以仅具有第二缺口234，为极耳212提供弯折空间，还可以仅具有第三缺口235，便于凸台2322弯折，还可以同时具有第一缺口233和第二缺口234，还可以同时具有第一缺口233和第三缺口235，还可以同时具有第一缺口233、第二缺口234和第三缺口235。
具体地，第一缺口233位于连接极耳231与连接部本体2321的连接处的拐角处，即第一缺口233的数量与连接极耳231的数量相同，示例性的，当连接极耳231的数量为两个时，第一缺口233具有两个；进一步地，凸台2322与连接部本体2321的连接处的拐角处也可以开设有第一缺口233；即当一个连接件230具有两个连接极耳231时，两个连接极耳231以及凸台2322与连 接部本体2321的连接处的拐角处均开设有第一缺口233，用于避免连接件230发生撕裂。
可以理解的是，第一缺口233的形状可以为方形，也可以为圆形，还可以为半圆，等，本申请实施例对第一缺口233的形状并不加以限定，也不局限于上述示例。第二缺口234、第三缺口235的形状可以与第一缺口233相同，也可以不同，以下不作赘述。
具体地，当极耳212位于两个连接极耳231之间时，极耳212在连接部232所在平面的正投影与连接部232的至少一部分重合，即在连接部232对应极耳212的位置可以开设有第二缺口234，进一步地，第二缺口234可以开设在连接部本体2321对应极耳212的位置，当极耳212发生弯折时，连接部232位于弯折的极耳212之间，容易与连接部232发生接触，第二缺口234可以开设于连接部232对应极耳212的位置，以避免弯折的极耳212与连接部232发生接触，为极耳212提供弯折的空间。
需要注意的是，参照附图3-附图5，附图12-附图14所示，连接件230可以位于极耳212弯折方向所在的一侧，也可以位于远离极耳212弯折方向所在的一侧，即当连接件230位于极耳212弯折方向所在的一侧时，连接件230位于弯折后的极耳212之间，此时，连接件230可以开设有第二缺口234，以供极耳212弯折。
具体地，为了便于凸台2322弯折，凸台2322与连接部本体2321的连接处的拐角处开设有第三缺口235，当凸台2322连接在连接部本体2321的边缘时，第三缺口235的数量为一个；当凸台2322连接在连接部本体2321的中间位置时，第三缺口235的数量为两个，两个第三缺口235分别位于凸台2322的两侧。
另外一方面，参照附图6-附图11，附图15-附图17所示，当连接件230位于远离极耳212弯折方向所在的一侧，即连接件230未位于弯折的极耳212之间，此时，极耳212所需要的长度较小，连接件230与电芯本体211之间的距离较小，可以进一步提升电芯本体211的可容置空间，进而提升电芯本体211的容量。
可以理解的是，绝缘层250可以覆盖连接部本体2321以及第一缺口233和/或第二缺口234和或第三缺口235。
作为一种可选的实施方式，连接件230为柔性连接件，且部分连接件230弯折，并与电芯本体211连接。
可以理解的是，连接件230的制备材料为柔性材料，以便于弯折。其中，弯折的部分可以是凸台2322，凸台2322弯折，并与电芯本体211连接，以固定连接件230。
作为一种可选的实施方式，部分连接件230弯折，并进入电芯本体211的顶封深坑面(图中未示出)；或者，部分连接件230弯折，并进入电芯本体211的顶封浅坑面。
具体地，电池200的制造过程中，通常需要进行封装工艺，在电芯本体211的顶封上会形成深坑面和浅坑面。
可以理解的是，部分连接件230为凸台2322，即凸台2322可以弯折进入顶封深坑面，或者进入顶封浅坑面，以连接电芯本体211，实现连接件230的固定，可以提升连接件230与电芯210的连接稳定性。
作为一种可选的实施方式，连接件230通过双面胶或胶纸或胶水与电芯本体211的顶封固定连接。即凸台2322通过双面胶与电芯本体211的顶封固定连接，也可以通过胶纸与电芯本体211的顶封固定连接，还可以通过胶水与电芯本体211的顶封固定连接，以连接电芯本体211，实现连接件230的固定，可以提升连接件230与电芯210的连接稳定性。
作为一种可选的实施方式，连接部232通过固定胶粘接在电芯210上，具体地，固定胶可以位于连接部本体2321靠近电芯210的一侧表面，并位于电芯本体211上靠近极耳212所在一侧的端部，以固定连接件230。可以立即的是，固定胶为双面胶、胶纸以及胶水中的一种。
需要注意的是，固定胶可以为绝缘胶，即在实现连接件230固定的同时，避免连接部本体2321与极耳212或者电芯本体211或者其他电子元件120直接连接发生短路。
术语“上”、“下”、“前”、“后”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或者位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或者暗示所指的装置或者元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。在本申请的描述中，“多个”的含义是两个或两个以 上，除非是另有精确具体的规定。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样的数据在适当情况下可以互换，以便这里描述的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。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (13)

  1. 一种电池，其特征在于，包括电芯、连接件和保护板组件，所述电芯包括电芯本体以及与所述电芯本体连接的两个极耳，所述连接件包括两个连接极耳以及连接两个所述连接极耳的连接部，其中一个所述连接极耳与其中一个所述极耳连接且电导通，并形成复合极耳；
    所述复合极耳和另一个所述极耳均与所述保护板组件连接，并形成第一回路；另一个所述连接极耳和另一个所述极耳均与所述保护板组件连接，并形成第二回路。
  2. 根据权利要求1所述的电池，其特征在于，所述连接部包括一体成型的连接部本体和凸台，所述连接部本体连接两个所述连接极耳，所述凸台与所述电芯本体连接。
  3. 根据权利要求2所述的电池，其特征在于，所述凸台位于所述连接部本体上与两个所述连接极耳中任一者对应的位置，且位于所述连接部本体靠近所述电芯本体的一侧。
  4. 根据权利要求2所述的电池，其特征在于，所述凸台位于两个所述连接极耳之间的所述连接部本体上；
    或者，所述凸台位于所述连接部本体靠近所述电芯本体的一侧；
    或者，所述凸台位于所述连接部本体远离所述电芯本体的一侧。
  5. 根据权利要求1-4中任一项所述的电池，其特征在于，其中一个所述连接极耳与其中一个所述极耳层叠连接，形成所述复合极耳。
  6. 根据权利要求1-4中任一项所述的电池，其特征在于，所述保护板组件包括电路板、第一导电件、第二导电件和第三导电件，所述第一导电件连接另一个所述复合极耳，所述第二导电件连接另一个所述极耳，所述第三导电件连接另一个所述连接极耳，
    所述电路板、所述第一导电件、所述第二导电件、所述复合极耳以及另一个所述极耳形成所述第一回路；
    所述电路板、所述第二导电件、所述第三导电件、另一个所述极耳以及另一个所述连接极耳形成所述第二回路。
  7. 根据权利要求1-4中任一项所述的电池，其特征在于，还包括绝缘层，所述绝缘层覆盖于所述连接部两侧，沿所述连接部的延伸方向，所述绝缘层 的边缘凸出所述连接部的边缘。
  8. 根据权利要求7所述的电池，其特征在于，所述绝缘层的边缘凸出所述连接部的边缘的尺寸为0.2mm-1.0mm。
  9. 根据权利要求2所述的电池，其特征在于，所述连接极耳与所述连接部本体的延伸方向交叉，所述连接极耳与所述连接部本体的连接处的拐角处开设有第一缺口；
    和/或，至少一个所述极耳位于两个所述连接极耳之间，所述极耳在所述连接部本体所在平面的正投影与至少部分所述连接部本体重合，位于重合区域内的所述连接部本体上开设有第二缺口；
    和/或，所述凸台与所述连接部本体的连接处的至少一处拐角处开设有第三缺口。
  10. 根据权利要求1-4中任一项所述的电池，其特征在于，所述连接件为柔性连接件，且部分所述连接件弯折，并与所述电芯本体连接。
  11. 根据权利要求10所述的电池，其特征在于，部分所述连接件弯折，并进入所述电芯本体的顶封深坑面；
    或者，部分所述连接件弯折，并进入所述电芯本体的顶封浅坑面。
  12. 根据权利要求1-4中任一项所述的电池，其特征在于，所述连接件通过双面胶或胶纸或胶水与所述电芯本体的顶封固定连接。
  13. 一种电子设备，包括壳体以及如权利要求1-12中任一项所述的电池，所述电池位于所述壳体内。
PCT/CN2023/117227 2022-11-07 2023-09-06 电池及电子设备 WO2024098927A1 (zh)

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