Hard-shell batteries and electronic devices

Abstract

This application provides a hard-shell battery with an outwardly extending outer shell portion. This outer shell extension is formed by a rigid battery compartment and a rigid battery cover of the hard-shell battery. The outer shell extension facilitates fixing the hard-shell battery to a mid-frame. This application also provides an electronic device in which a hollow cavity in the mid-frame houses the main body of the hard-shell battery, and the end face of the mid-frame is used to fix the outer shell extension of the hard-shell battery. The hard-shell battery can also be electrically connected to the mid-frame. The hard-shell battery can partially replace the functions of the mid-frame, such as grounding.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and more specifically, to hard-shell batteries and electronic devices. Background Technology

[0002] Battery charging speeds are trending towards increasing speeds. To minimize overheating during fast charging and maintain good cycle life, battery energy density may need to be slightly reduced. This could result in a relatively large battery footprint without reducing capacity, contradicting the trend towards thinner and lighter electronic devices. Conversely, a smaller battery capacity without increasing footprint increases the reliance of electronic devices on charging. Summary of the Invention

[0003] This application provides a hard-shell battery and an electronic device, the purpose of which is to increase the battery capacity without changing the battery's footprint, or to reduce the battery's footprint without changing the battery capacity.

[0004] In a first aspect, a hard-shell battery is provided, which is used in an electronic device. The hard-shell battery includes a bare battery cell and a rigid battery casing. The rigid battery casing includes a rigid battery housing and a rigid battery cover, which are sealed together to form a closed space. The bare battery cell is housed within the closed space.

[0005] The rigid battery case and the rigid battery cover are sealed together and extend outward to form a housing extension, which is used to fix the rigid battery to the electronic device.

[0006] In this application, the hard-shell battery has a casing extension that can be directly fixed to the mid-frame, facilitating the secure mounting of the hard-shell battery. Compared to battery assemblies with metal frames or soft-shell batteries, the hard-shell battery has a relatively simple structure, allowing for a thinner casing and thus increasing its capacity. Furthermore, due to its simpler structure, the hard-shell battery is less prone to internal component movement that could affect safety, resulting in higher overall safety.

[0007] The rigid battery case and rigid battery cover are sealed together and further form an outer casing extension. The manufacturing process of the outer casing extension is relatively simple. Since the rigid battery case and rigid battery cover are sealed together and further form an outer casing extension, the outer casing extension can include part of the rigid battery cover. The outer casing extension can be fixed to the electronic device face-to-face, which facilitates multi-directional prevention of the rigid battery from moving around inside the electronic device.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the outer casing extension is annular and located on the outer periphery of the rigid battery casing.

[0009] In this application, the housing extension can be annular and surround the outer periphery of the bare battery cell, which helps to increase the contact area between the housing extension and the electronic device, thereby improving the connection stability between the housing extension and the electronic device.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the hard-shell battery further includes a bare cell, the cell being bonded together with an adhesive between the bare cell and the hard battery casing.

[0011] In this application, the hard-shell battery casing and the cell material inside the hard-shell battery can be bonded together by cell adhesive. The amount of adhesive inside the hard-shell battery can be relatively small, which is beneficial for providing capacity growth space for the battery and also for reducing the total space occupied by the battery, thereby contributing to the thinner and lighter design of electronic devices.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the outer periphery of the bare cell contacts the inner periphery of the rigid battery casing.

[0013] In this application, the bare battery cells are tightly packed into a rigid battery casing, which helps to reduce the number of battery components, such as eliminating the need for cell colloids; it also helps to increase the energy density of the battery.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the outer region of the rigid battery casing includes a conductive region, and the other outer regions of the rigid battery casing, apart from the conductive region, are made of an insulating material.

[0015] In this application, the battery, together with the mid-frame, serves as a grounding device. Components within the electronic device can be grounded via the battery, thereby improving their performance, such as their radio frequency performance and shielding capabilities.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the conductive region is used to abut against the spring, which is fixedly disposed on the middle frame of the electronic device.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the hard-shell battery further includes a spring clip, which is fixedly disposed on the conductive area and electrically connected to the conductive area, and the spring clip is used to abut against the mid-frame of the electronic device.

[0018] In this application, the spring can provide a relatively stable electrical connection, which is beneficial to maintaining the performance of the device at a relatively high level.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the rigid battery casing includes a rigid conductive material and an insulating material, wherein the insulating material partially covers the rigid conductive material, and the insulating material is correspondingly disposed in other outer regions of the rigid battery casing other than the conductive region.

[0020] In this application, except for the area of ​​stable electrical connection, the battery and the middle frame can be stably insulated, which is beneficial to making the electrical connection between the battery and the middle frame relatively stable. The main material of the rigid battery casing is a conductive material such as metal, which is beneficial to increasing the conductive area of ​​the rigid battery casing.

[0021] In conjunction with the first aspect, in some implementations of the first aspect, the rigid battery casing includes a conductive material and a rigid insulating material, the conductive material covering the rigid insulating material, and the conductive material being disposed correspondingly in the conductive area.

[0022] In this application, except for the area with stable electrical connection, the battery and the mid-frame can be stably insulated, which helps to make the electrical connection between the battery and the mid-frame relatively stable. In this application, the main material of the rigid battery casing uses insulating materials such as plastic, which helps to reduce the weight of the rigid battery casing.

[0023] In conjunction with the first aspect, in some implementations of the first aspect, the rigid battery box includes a battery box bottom, and the battery box bottom or the rigid battery cover is electrically connected to the conductive area.

[0024] In this application, a large area of ​​the battery can be electrically connected to the mid-frame, which helps to provide sufficient grounding area and thus improves the performance of the device, such as its radio frequency performance and shielding performance.

[0025] In conjunction with the first aspect, in some implementations of the first aspect, the rigid battery casing includes a rigid battery case, and the bottom of the rigid battery case is provided with a bottom protrusion.

[0026] In this application, the bottom protrusion can create a partial protrusion of the battery, which can cooperate with the middle frame to improve the constraint of the battery being housed within the cavity of the middle frame. The middle frame can have a middle frame support plate, which can correspond to the area on the bottom of the battery box other than the bottom protrusion. The middle frame support plate helps to improve the mechanical stability of the middle frame.

[0027] In conjunction with the first aspect, in some implementations of the first aspect, the hard-shell battery further includes a battery connector, and on the side near the battery connector, the raised sidewall of the bottom of the case is aligned with the sidewall of the hard battery case.

[0028] In this application, the raised sidewall of the bottom of the battery case is aligned with the sidewall of the rigid battery case, which facilitates the electrical connection between the positive electrode material and the positive electrode tab inside the rigid battery case, and also facilitates the electrical connection between the negative electrode material and the negative electrode tab.

[0029] In conjunction with the first aspect, in some implementations of the first aspect, the housing extension further includes a through hole for through which a screw passes.

[0030] In this application, screw fixing is generally more stable, which helps reduce the possibility of the hard-shell battery moving around freely within the cavity, thereby reducing the probability of safety hazards from the hard battery case. Fixing the hard-shell battery with screws also improves the ease of disassembling it.

[0031] In conjunction with the first aspect, in some implementations of the first aspect, the housing extension is used to be fixed to the end face of the mid-frame of the electronic device, and the main body portion of the rigid battery housing is used to be at least partially housed within the hollow cavity of the mid-frame.

[0032] In conjunction with the first aspect, in some implementations of the first aspect, the housing extension is used to form the mid-frame of the electronic device.

[0033] In this application, the hard-shell battery and the mid-frame are integrally formed, and the electronic device may not include the fixing connector between the hard-shell battery and the mid-frame shown in the figure, nor may it include the spring clip shown in the figure. This is beneficial for further reducing the thickness of the electronic device and also for providing space for other electronic devices.

[0034] In a second aspect, an electronic device is provided, comprising a hard-shell battery as described in any of the implementations of the first aspect above.

[0035] In this application, the hard-shell battery has a casing extension that can be directly fixed to the mid-frame, facilitating the secure mounting of the hard-shell battery. Compared to battery assemblies with metal frames or soft-shell batteries, the hard-shell battery has a relatively simple structure, allowing for a thinner casing and thus increasing its capacity. Furthermore, due to its simpler structure, the hard-shell battery is less prone to internal component movement that could affect safety, resulting in higher overall safety.

[0036] In conjunction with the second aspect, in some implementations of the second aspect, the electronic device further includes a mid-frame, the mid-frame including a hollow cavity, the main body portion of the hard-shell battery being at least partially housed within the cavity, the sidewall of the cavity being connected to a first end face of the mid-frame, and the outer shell extension of the hard-shell battery being fixed to the first end face.

[0037] In conjunction with the second aspect, in some implementations of the second aspect, a middle frame support plate is provided on the inner wall of the cavity, and the middle frame support plate is arranged perpendicularly to the inner wall of the cavity.

[0038] In this application, the middle frame may have a middle frame support plate, which may correspond to the area at the bottom of the battery box other than the bottom protrusion. The middle frame support plate is beneficial to improving the mechanical stability of the middle frame.

[0039] In conjunction with the second aspect, in some implementations of the second aspect, the hard-shell battery further includes a battery connector, and the mid-frame support plate includes a first end and a second end, both of which are connected to a cavity sidewall, the cavity sidewall being the sidewall of the cavity closest to the battery connector.

[0040] In this application, the first and second ends of the mid-frame support plate can form an open end, which can be used to accommodate the hard-shell battery, thereby facilitating the electrical connection of the battery connector of the hard-shell battery to the mid-frame or to other devices on the mid-frame.

[0041] In conjunction with the second aspect, in some implementations of the second aspect, the ratio of the area of ​​the middle frame support plate to the opening area of ​​the cavity is greater than 0 and less than 2 / 3.

[0042] In this application, increasing the area of ​​the mid-frame support plate can help improve the structural strength of the mid-frame. Reducing the area of ​​the mid-frame support plate can help increase the capacity of the hard-shell battery.

[0043] Optionally, the ratio of the area of ​​the middle frame support plate 224 to the opening area of ​​the cavity 22 can be approximately 1 / 5 to 1 / 2. For example, the ratio of the area of ​​the middle frame support plate 224 to the opening area of ​​the cavity 22 can be approximately 1 / 3 to 1 / 4.

[0044] In conjunction with the second aspect, in some implementations of the second aspect, the hard-shell battery is attached to the mid-frame support plate.

[0045] In this application, the mid-frame support plate is bonded to the hard-shell battery, which helps to improve the connection stability between the hard-shell battery and the mid-frame.

[0046] In conjunction with the second aspect, in some implementations of the second aspect, the electronic device further includes a mid-frame, the mid-frame including a groove, the main body portion of the hard-shell battery being at least partially housed in the groove, the bottom of the groove forming the bottom wall of the mid-frame, the opening of the groove being connected to a first end face of the mid-frame, and the outer shell extension of the hard-shell battery being fixed to the first end face.

[0047] In this application, the middle frame may have a bottom wall, which may correspond to the bottom of the battery box. The bottom wall helps to improve the mechanical stability of the middle frame.

[0048] In conjunction with the second aspect, in some implementations of the second aspect, the thickness of the bottom wall is greater than 0.01 mm and less than 0.6 mm.

[0049] In this application, the greater the thickness of the bottom wall, the more beneficial it is to increase the mechanical strength of the middle frame.

[0050] Optionally, the thickness of the bottom wall can be, for example, 0.2 mm to 0.4 mm.

[0051] In conjunction with the second aspect, in some implementations of the second aspect, the bottom of the rigid battery cover or the rigid battery box is electrically connected to the middle frame.

[0052] In this application, a large area of ​​the battery can be electrically connected to the mid-frame, which helps to provide sufficient grounding area and thus improves the performance of the device, such as its radio frequency performance and shielding performance.

[0053] In conjunction with the second aspect, in some implementations of the second aspect, the outer shell extension is fixed to the first end face by any of the following: solder, colloid, screw, snap-fit.

[0054] In conjunction with the second aspect, in some implementations of the second aspect, the housing extension is integrally formed with the mid-frame of the electronic device.

[0055] In this application, the hard-shell battery and the mid-frame are integrally formed, and the electronic device may not include the fixing connector between the hard-shell battery and the mid-frame shown in the figure, nor may it include the spring clip shown in the figure. This is beneficial for further reducing the thickness of the electronic device and also for providing space for other electronic devices.

[0056] In conjunction with the second aspect, in some implementations of the second aspect, the electronic device further includes an electronic component that is grounded via a housing extension of the hard-shell battery.

[0057] In this application, the battery can serve as a grounding device. Components within the electronic device can be grounded via the battery, which can improve the performance of these components, such as their radio frequency performance and shielding capabilities.

[0058] Thirdly, an electronic device is provided, comprising:

[0059] A hard-shell battery includes a bare battery cell and a hard battery casing. The hard battery casing includes a hard battery box and a hard battery cover, which are sealed together to form a sealed space. The bare battery cell is housed in the sealed space and fixed inside the hard battery casing. The hard battery box and the hard battery cover are sealed together to form a casing extension, which extends outward from the main body of the hard battery casing. The outer region of the hard battery casing includes a conductive region, and the other outer regions of the hard battery casing, except for the conductive region, are made of insulating material.

[0060] The middle frame includes a hollow cavity, the main body of the hard-shell battery is at least partially housed in the cavity, the sidewall of the cavity is connected to a first end face of the middle frame, and the outer shell extension of the hard-shell battery is fixed to the first end face.

[0061] An electrical connector is electrically connected between the middle frame and the rigid battery casing.

[0062] In this application, the hard-shell battery has a casing extension that can be directly fixed to the mid-frame, facilitating the secure mounting of the hard-shell battery. Compared to battery assemblies with metal frames or soft-shell batteries, the hard-shell battery has a relatively simple structure, allowing for a thinner casing and thus increasing its capacity. Furthermore, due to its simpler structure, the hard-shell battery is less prone to internal component movement that could affect safety, resulting in higher overall safety.

[0063] The rigid battery case and rigid battery cover are sealed together and further form an outer casing extension. The manufacturing process of the outer casing extension is relatively simple. Since the rigid battery case and rigid battery cover are sealed together and further form an outer casing extension, the outer casing extension can include part of the rigid battery cover. The outer casing extension can be fixed to the electronic device face-to-face, which facilitates multi-directional prevention of the rigid battery from moving around inside the electronic device.

[0064] In conjunction with the third aspect, in some implementations of the third aspect, the electrical connector is a spring, one end of which is fixed to the side wall of the cavity, and the other end of which abuts against the conductive area of ​​the rigid battery casing.

[0065] In this application, the spring can provide a relatively stable electrical connection, which is beneficial to maintaining the performance of the device at a relatively high level.

[0066] Fourthly, an electronic device is provided, comprising:

[0067] A hard-shell battery includes a bare battery cell and a hard battery casing. The hard battery casing includes a hard battery box and a hard battery cover, which are sealed together to form a sealed space. The bare battery cell is housed in the sealed space and fixed inside the hard battery casing. The hard battery box and the hard battery cover are sealed together to form a casing extension, which extends outward from the main body of the hard battery casing. The outer region of the hard battery casing includes a conductive region, and the other outer regions of the hard battery casing, except for the conductive region, are made of insulating material.

[0068] The middle frame includes a groove, the main body of the hard-shell battery is at least partially housed in the groove, the bottom of the groove forms the bottom wall of the middle frame, the opening of the groove is connected to the first end face of the middle frame, and the outer shell extension of the hard-shell battery is fixed to the first end face.

[0069] An electrical connector is electrically connected between the middle frame and the rigid battery casing.

[0070] In this application, the hard-shell battery has a casing extension that can be directly fixed to the mid-frame, facilitating the secure mounting of the hard-shell battery. Compared to battery assemblies with metal frames or soft-shell batteries, the hard-shell battery has a relatively simple structure, allowing for a thinner casing and thus increasing its capacity. Furthermore, due to its simpler structure, the hard-shell battery is less prone to internal component movement that could affect safety, resulting in higher overall safety.

[0071] The rigid battery case and rigid battery cover are sealed together and further form an outer casing extension. The manufacturing process of the outer casing extension is relatively simple. Since the rigid battery case and rigid battery cover are sealed together and further form an outer casing extension, the outer casing extension can include part of the rigid battery cover. The outer casing extension can be fixed to the electronic device face-to-face, which facilitates multi-directional prevention of the rigid battery from moving around inside the electronic device.

[0072] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the electrical connector is a spring, one end of which is fixed to the side wall of the groove, and the other end of which abuts against the conductive area of ​​the rigid battery casing.

[0073] In this application, the spring can provide a relatively stable electrical connection, which is beneficial to maintaining the performance of the device at a relatively high level. Attached Figure Description

[0074] Figure 1 This is a schematic structural diagram of an electronic device.

[0075] Figure 2 This is an exploded view of an electronic device.

[0076] Figure 3 This is a schematic structural diagram of a pouch battery.

[0077] Figure 4 This is an exploded view of another electronic device.

[0078] Figure 5 This is a schematic structural diagram of a battery assembly.

[0079] Figure 6 This is a schematic structural diagram of a hard-shell battery provided in an embodiment of this application.

[0080] Figure 7 This is a schematic structural diagram of a hard-shell battery provided in an embodiment of this application.

[0081] Figure 8 This is an exploded view of an electronic device provided in an embodiment of this application.

[0082] Figure 9 This is a schematic structural diagram of an electronic device provided in an embodiment of this application.

[0083] Figure 10 These are schematic structural diagrams of the current paths on the two types of mid-frames.

[0084] Figure 11 This is a schematic structural diagram of a mid-frame provided in an embodiment of this application.

[0085] Figure 12 This is a schematic structural diagram of another middle frame provided in an embodiment of this application.

[0086] Figure 13 This is a schematic structural diagram of another electronic device provided in the embodiments of this application.

[0087] Figure 14 This is a schematic structural diagram of another hard-shell battery provided in the embodiments of this application.

[0088] Figure 15 This is a schematic structural diagram of another hard-shell battery provided in the embodiments of this application.

[0089] Figure 16 This is a schematic structural diagram of another hard-shell battery provided in the embodiments of this application.

[0090] Figure 17 This is an exploded view of another electronic device provided in an embodiment of this application.

[0091] Figure 18This is a schematic structural diagram of another electronic device provided in the embodiments of this application.

[0092] Figure 19 This is a schematic structural diagram of another type of middle frame provided in the embodiments of this application. Detailed Implementation

[0093] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0094] Figure 1 This is a schematic structural diagram of an electronic device 100 provided in an embodiment of this application. The electronic device 100 can be, for example, a terminal consumer product or a 3C electronic product (computer, communication, consumer electronics), such as a mobile phone, power bank, laptop, tablet computer, e-reader, laptop computer, digital camera, wearable device, vehicle terminal, headphones, etc. The electronic device 100 can also be a mobile device. A mobile device can be, for example, a vehicle, electric skateboard, electric bicycle, etc. Figure 1 The illustrated embodiment uses a mobile phone as an example of an electronic device 100.

[0095] Electronic device 100 may include a housing 10, a display screen 20, and a battery 30. Specifically, the housing 10 may include a bezel 12 and a back cover 11. The bezel 12 may be located between the display screen 20 and the back cover 11. The bezel 12 may surround the outer periphery of the display screen 20 and the outer periphery of the back cover 11. The cavity formed between the display screen 20, the bezel 12, and the back cover 11 can be used to house the battery 30. The cavity of electronic device 100 for housing the battery 30 may be referred to as a battery compartment. The battery 30 can be used to power electronic devices within electronic device 100. The battery 30 may be, for example, a lithium-ion secondary battery, a sodium-ion secondary battery, a potassium-ion secondary battery, a magnesium-ion secondary battery, a zinc-ion secondary battery, an aluminum-ion secondary battery, etc.

[0096] Figure 2 This is an exploded view of an electronic device 100.

[0097] Electronic device 100 may include a middle frame 22. Figure 2 In the example shown, the middle frame 22 can form the border 12 of the housing 10 and can be arranged parallel to the rear cover 11 of the housing 10. That is, the housing 10 can be formed by assembling the middle frame 22 and the rear cover 11. In another example, Figure 1The frame 12 and the back cover 11 shown can be connected in a manner other than assembly, making the housing 10 a separate component; wherein the frame 12 and the back cover 11 can be two parts of the housing 10. The cavity formed by the display screen 20 and the housing 10 can be used to accommodate the middle frame 22, which can be arranged parallel to the back cover 11 of the housing 10.

[0098] The middle frame 22 may include a groove 23. The groove 23 may be a battery compartment for accommodating the battery 30. The groove 23 may include a groove bottom and groove walls. The battery 30 may be fixed to the groove bottom, and the groove walls may surround the battery 30.

[0099] The electronic device 100 may also include a battery adhesive 32. The battery adhesive 32 may be adhered, for example, between the battery 30 and the bottom of the slot 23, so that the battery 30 can be fixed to the bottom of the slot.

[0100] Battery 30 may include a battery connector 31. Battery connector 31 extends from the body of battery 30. Electronic device 100 may also include a circuit board assembly 21. Circuit board assembly 21 can be electrically connected to battery connector 31, so that battery 30 can power circuit board assembly 21. Figure 2 In the example shown, the circuit board assembly 21 may be, for example, a power management module, which may be used to control the charging and discharging of the battery 30. In other examples, the circuit board assembly 21 may be a motherboard. Optionally, such as Figure 2 As shown, the middle frame 22 may also include a cavity 24 for housing the circuit board assembly 21 and the battery connector 31.

[0101] The following is combined Figure 2 , Figure 3 This describes one possible structure of battery 30. Figure 2 , Figure 3 The battery 30 shown can be a pouch battery.

[0102] Battery 30 may include electrolyte 303, bare cell 300, and pouch cell casing 310. In one example, battery 30 may include cell adhesive 320 bonded between bare cell 300 and pouch cell casing 310. Electrolyte 303 may be a metal ion transport carrier.

[0103] The bare cell 300 may include a positive electrode material 301, a negative electrode material 302, and a separator 304 (corresponding connecting components and circuits are not shown). The positive electrode material 301 and the negative electrode material 302 can intercalate and deintercalate metal ions (such as lithium ions) to achieve energy storage and release. The positive electrode material 301 and the negative electrode material 302 are the main energy storage components of the battery 30, reflecting the energy density, cycle performance, and safety performance of the battery 30. The separator 304 is permeable to metal ions, but the separator 304 itself is non-conductive. Therefore, the separator 304 can separate the positive electrode material 301 and the negative electrode material 302 to prevent short circuits between them.

[0104] The positive electrode material 301 may include a positive electrode current collector and a positive electrode active material disposed on the positive electrode current collector. The positive electrode active material includes, but is not limited to, lithium composite metal oxides (such as lithium nickel cobalt manganese oxide), polyanionic lithium compounds LiMx(PO4)y (M is Ni, Co, Mn, Fe, Ti, V, 0≤x≤5, 0≤y≤5), etc.

[0105] The negative electrode material 302 may include a negative electrode current collector and a negative electrode active material disposed on the negative electrode current collector. The negative electrode active material includes, but is not limited to, at least one of the following: lithium metal, lithium alloy, lithium titanate, natural graphite, artificial graphite, MCMB, amorphous carbon, carbon fiber, carbon nanotubes, hard carbon, soft carbon, graphene, graphene oxide, silicon, silicon carbide, silicon oxide, and silicon metal compound.

[0106] The properties of the separator 304 itself should be conducive to achieving good charge and discharge performance of the battery 30. For example, in order to stably and reliably separate the positive electrode material 301 and the negative electrode material 302, the separator 304 should have a certain strength and ductility to avoid being punctured; that is, the separator 304 should have a certain degree of resistance to mechanical abuse. Furthermore, the battery 304 itself may generate heat during charge and discharge. Under high temperatures, the separator 304 should also have relatively high stability; that is, the separator 304 should have a certain degree of heat resistance or resistance to heat abuse.

[0107] The diaphragm 304 may include a diaphragm substrate. The diaphragm substrate may be a porous insulating material. The pores in the diaphragm substrate allow metal ions to pass through (the pores in the diaphragm substrate can serve as transport channels for metal ions). The diaphragm substrate may, for example, include polyethylene (PE), polypropylene (PP), etc.

[0108] The diaphragm 304 may also include a diaphragm coating. The diaphragm coating may be attached to one or both sides of the diaphragm substrate to improve the diaphragm 304's properties, such as high ductility, high rupture temperature, and low closure temperature. Additionally, the diaphragm coating may possess other properties, such as relatively high adhesion. The diaphragm coating may include organic coatings, inorganic coatings, and / or organic-inorganic composite coatings. Inorganic coatings may include ceramic coatings. Ceramic coatings may include at least one of the following: alumina, silicon oxide, titanium oxide, zirconium oxide, zinc oxide, barium oxide, magnesium oxide, beryllium oxide, calcium oxide, thorium oxide, aluminum nitride, titanium nitride, boehmite, apatite, aluminum hydroxide, magnesium hydroxide, barium sulfate, boron nitride, silicon carbide, silicon nitride, cubic boron nitride, hexagonal boron nitride, graphite, graphene, mesoporous molecular sieves (MCM-41, SBA-15), etc. Organic coatings may include at least one of the following: polyvinylidene fluoride coating, vinylidene fluoride-hexafluoropropylene copolymer coating, polystyrene coating, aramid coating, polyacrylate or modified polyacrylate coating, polyester coating, polyarylate coating, polyacrylonitrile coating, aromatic polyamide coating, polyimide coating, polyethersulfone coating, polysulfone coating, polyetherketone coating, polyetherimide coating, and polybenzimidazole. Organic-inorganic composite coatings can be prepared by mixing the above-mentioned inorganic coatings with organic coatings.

[0109] The pouch battery casing 310 may include a flexible cover 311 and a flexible housing 312. The flexible cover 311 and the flexible housing 312 are connected and sealed. The junction of the flexible cover 311 and the flexible housing 312 can form a sealing edge 313 of the pouch battery casing 310. The cavity formed by the flexible cover 311 and the flexible housing 312 can be used to accommodate bare battery cells 300.

[0110] The pouch battery casing 310 can be a polymer casing. That is, the pouch battery casing 310 can contain a polymer compound in a proportion exceeding a certain threshold. The hardness of the pouch battery casing 310 can be less than a first preset hardness. The pouch battery casing 310 can, for example, be made of aluminum-plastic film. Aluminum-plastic film can have relatively high barrier properties, insulation properties, relatively good puncture resistance, and relatively good electrolyte stability. For details on aluminum-plastic film, please refer to the group standard announcement "Aluminum-Plastic Composite Film for Lithium-ion Batteries" issued by the China Chemical and Physical Power Sources Industry Association.

[0111] The cell adhesive 320 can be, for example, a hot melt adhesive. Hot melt adhesives are solid at room temperature. Hot melt adhesives have relatively low viscosity at room temperature. Heating the hot melt adhesive to a certain temperature can increase its fluidity; under certain pressure, the viscosity of the hot melt adhesive can increase. After cooling, the hot melt adhesive can bond the bare cell 300 and the pouch battery casing 310 together.

[0112] The pouch battery casing 310 helps improve the performance of the battery 30. For example, the pouch battery 30 with the pouch battery casing 310 can have a relatively low weight; and for the same size, the capacity of the pouch battery 30 may be relatively high. However, the pouch battery casing 310 has relatively poor mechanical properties, which may reduce the performance of the pouch battery 30.

[0113] For example, when removing the pouch battery 30 from the electronic device 100, the pouch battery casing 310 may be damaged, which could expose the bare battery cell 300.

[0114] For example, the soft-pack battery casing 310 has relatively poor resistance to puncture by hard, sharp objects.

[0115] For example, in Figure 2 When the battery gel 32 shown cannot restrain the pouch battery 30, the pouch battery 30 may move freely within the groove 23 of the middle frame 22, which may lead to safety hazards, such as short circuit between the positive and negative electrodes of the pouch battery 30.

[0116] For example, the pouch battery casing 310 exerts relatively little constraint on the dimensions of the pouch battery 30. Under normal operating conditions, the pouch battery 30 may expand slightly. Therefore, the electronic device 100 needs to allow for this expansion space, which makes the electronic device 100 relatively thick.

[0117] Optionally, a covering film can be wrapped around the periphery of the pouch battery 30. The covering film can be adhered to the mid-frame 22, and the pouch battery 30 can be constrained within the covering film. By mechanically detaching the connection between the covering film and the pouch battery 30, the pouch battery 30 can be detached from the mid-frame 22, which helps reduce the possibility of damage to the pouch battery casing 310. However, the presence of the covering film does not improve other performance characteristics of the pouch battery 30. Furthermore, the covering film increases the space occupied by the pouch battery 30 within the electronic device 100.

[0118] Figure 4 This is an exploded view of another electronic device 100. (Compared to...) Figure 2 Similar to the illustrated electronic device 100, the electronic device 100 may include a back cover 11, a mid-frame 22, and a display screen 20. Among these, Figure 4 The electronic device 100 shown may also include a battery assembly 40.

[0119] Unlike Figure 2 The groove 23 of the middle frame 22 shown, Figure 4The shown mid-frame 22 may include a hollow cavity 25. The inner wall of the cavity 25 may be connected between two end faces of the mid-frame 22, which may, for example, be parallel to each other and spaced apart. One of these end faces may face the display screen 20, and the other may face the rear cover 11. The end faces of the mid-frame 22 may be parallel to the rear cover 11 of the electronic device 100. The cavity 25 may be used to partially house the battery assembly 40.

[0120] The following is combined Figure 4 , Figure 5 This describes one possible structure of the battery module 40.

[0121] Figure 5 The battery assembly 40 shown may include a battery 30 and a metal battery holder 410. Figure 5 The structure of the battery 30 shown can be referred to Figure 3 The battery 30 shown will not be described in detail here. Figure 5 In the example shown, battery 30 is a pouch battery.

[0122] The metal battery holder 410 may include a battery compartment 412 and a battery cover 411. The battery cover 411 may cover the opening of the battery compartment 412, and the edge of the battery cover 411 may be connected to the edge of the battery compartment 412. The battery cover 411 and the battery compartment 412 may form a battery compartment for accommodating the battery 30. That is, the battery 30 may be accommodated within the cavity of the metal battery holder 410.

[0123] The edge of the battery compartment 412 can overlap with the edge of the battery cover 411 to form the overlapping edge 413 of the metal battery holder 410. The overlapping edge 413 of the metal battery holder 410 can be vertically positioned relative to the side wall of the battery compartment 412 and extends outward from the side wall of the battery compartment 412. The overlapping edge 413 of the metal battery holder 410 can be fixed to... Figure 4 On one end face of the middle frame 22 shown.

[0124] The battery 30 may also include a battery adhesive 42 that is adhered between the battery 30 and the metal battery holder 410. The battery adhesive 42 may be, for example, a double-sided adhesive. The battery adhesive 42 can be used to fix the battery 30 to the metal battery holder 410, thereby helping to prevent the battery 30 from moving arbitrarily within the metal battery holder 410.

[0125] and Figure 2 Compared to the electronic device 100 shown, due to Figure 4The battery assembly 40 shown includes a metal battery holder 410, so the battery assembly 40 can have a relatively high resistance to puncture by hard, sharp objects; the pouch battery 30 is housed in the metal battery holder 410, and when the battery assembly 40 is removed from the electronic device 100, the metal battery holder 410 can protect the pouch battery 30 and reduce the risk of exposed bare cells.

[0126] However, in Figure 5 When the battery gel 32 shown cannot restrain the movement of the pouch battery 30, the pouch battery 30 may move arbitrarily within the metal battery holder 410, which may lead to safety hazards, such as short circuit between the positive and negative electrode plates of the battery.

[0127] Furthermore, due to Figure 5 The battery assembly 40 shown may include, in addition to Figure 3 The pouch battery 30 shown may also include a metal battery holder 410 and a battery gel 42. Furthermore, the cavity of the metal battery holder 410 needs to accommodate the expansion of the pouch battery 30. Therefore, the battery assembly 40 occupies a relatively large space in the thickness direction of the electronic device 100.

[0128] In addition, Figure 2 The middle frame 22 with groove 23 shown is replaced with Figure 4 The cavity 25 shown in the middle frame 22 may affect the performance of the middle frame 22, such as reducing the mechanical stability of the middle frame 22.

[0129] To improve the application effect of battery 30 in electronic device 100, this application provides a new battery 30. Figure 6 , Figure 7 These are schematic diagrams of the structure of a battery 30 provided in the embodiments of this application. Figure 6 The external structure of battery 30 can be shown. Figure 7 The internal structure of battery 30 can be shown. Figure 6 , Figure 7 The battery 30 shown can be a hard-cased battery. The following is in conjunction with... Figure 6 , Figure 7 This application describes a hard-shell battery 30 provided in an embodiment.

[0130] like Figure 6 As shown, the hard-shell battery 30 may include a hard battery casing 330 and a battery connector 31.

[0131] The rigid battery casing 330 may include a rigid battery cover 331 and a rigid battery housing 332. The rigid battery cover 331 and the rigid battery housing 332 are sealed together, thereby forming a sealed space between the rigid battery cover 331 and the rigid battery housing 332 to achieve [the desired effect]. Figure 7Mechanical protection for the bare battery cell 300 shown.

[0132] The edge of the rigid battery cover 331 can be sealed to the edge of the rigid battery case 332, forming a housing extension 333 of the rigid battery casing 330. The housing extension 333 of the rigid battery casing 330 can extend outward from the main body of the rigid battery casing 330. The extending direction of the housing extension 333 of the rigid battery casing 330 can be parallel to the rigid battery cover 331. The housing extension 333 of the rigid battery casing 330 can be used to fix the rigid battery 30 to the mid-frame 22 of the electronic device 100.

[0133] The battery connector 31 can extend from the body of the hard-shell battery 30. For an explanation of the battery connector 31, please refer to [reference needed]. Figure 2 The battery connector 31 shown will not be described in detail here.

[0134] like Figure 7 As shown, the hard-cased battery 30 may include a bare cell 300, an electrolyte 303, and a hard battery casing 330. The hard battery casing 330 can be used to house the bare cell 300 and the electrolyte 303.

[0135] Optionally, the outer periphery of the bare cell 300 can contact the inner periphery of the rigid battery casing 330. The outer periphery of the bare cell 300 can refer to the entire outer area of ​​the bare cell 300. The inner periphery of the rigid battery casing 330 can refer to the entire inner area of ​​the rigid battery casing 330. That is, every position on the outer periphery of the bare cell 300 can be in close contact with any position on the inner periphery of the rigid battery casing 330. For example, the positive electrode material 301, negative electrode material 302, or separator 304 of the bare cell 300 near the rigid battery cover 331 can contact the rigid battery cover 331; the positive electrode material 301, negative electrode material 302, or separator 304 of the bare cell 300 near the bottom 3321 of the battery box can contact the bottom 3321 of the battery box; the separator 304 of the bare cell 300 can contact the battery box sidewall 3322 of the bottom 3321 of the battery box. Optionally, the hard-cased battery 30 may also include a cell adhesive 320. The cell adhesive 320 can be used to secure the bare cell 300 within the hard battery casing 330. The cell adhesive 320 can be bonded between the bare cell 300 and the hard battery casing 330. A description of the cell adhesive 320 can be found in [reference needed]. Figure 3 The battery cell colloid 320 shown here will not be described in detail here.

[0136] The bare cell 300 may include a positive electrode material 301, a negative electrode material 302, and a separator 304. The bare cell 300 can be the main energy storage component of the hard-case battery 30, reflecting the energy density, cycle performance, and safety performance of the hard-case battery 30. For further explanation of the bare cell 300, please refer to [reference needed]. Figure 2 The bare battery cell 300 shown here will not be described in detail here.

[0137] The material of the rigid battery casing 330 can be a rigid material, such as metal. For example, the materials for the rigid battery casing 330 can refer to the following standards: Industry Standard YS / T 294-2011 - "Hard Alloy Blanks for Stamped Rigid Battery Casings", Industry Standard YS / T 877-2013 - "Nickel-plated Casings for Rechargeable Rigid Batteries", Industry Standard YS / T 914-2013 - "Aluminum Casings for Power Lithium Rigid Batteries", Industry Standard YS / T 797-2012 - "Aluminum Casings for Portable Lithium-ion Rigid Batteries", National Standard GB / T34212-2017 - "Cold-rolled Steel Strip for Rigid Battery Casings", Industry Standard YS / T 712-2009 - "Aluminum Alloy Plates and Strips for Mobile Phone Rigid Battery Casings", etc.

[0138] The rigid battery compartment 332 may include a battery compartment bottom 3321 and a battery compartment sidewall 3322. The battery compartment sidewall 3322 may surround the battery compartment bottom 3321. The battery compartment sidewall 3322 may include a compartment wall extension 3324 and a compartment wall base 3323. The compartment wall base 3323 may be connected between the compartment wall extension 3324 and the battery compartment bottom 3321. The compartment wall extension 3324 may be located at one end of the battery compartment sidewall 3322 away from the battery compartment bottom 3321. The compartment wall extension 3324 may be vertically disposed relative to the compartment wall base 3323 and extend outward from the compartment wall base 3323.

[0139] The rigid battery cover 331 may include a core portion 3311 and a peripheral portion 3312. The core portion 3311 may be disposed opposite to the bottom 3321 of the battery compartment or the base 3323 of the side wall 3322 of the battery compartment. The peripheral portion 3312 may be disposed opposite to the extension 3324 of the side wall 3322 of the battery compartment.

[0140] The peripheral portion 3312 of the rigid battery cover 331 can be sealed to the wall extension 3324 of the battery compartment side wall 3322 to form the outer casing extension 333 of the rigid battery casing 330. That is, the outer casing extension 333 of the rigid battery casing 330 can include the peripheral portion 3312 of the rigid battery cover 331 and the wall extension 3324 of the battery compartment side wall 3322. The outer casing extension 333 of the rigid battery casing 330 can extend outward from the main body of the rigid battery casing 330, which may include, for example, the battery compartment bottom 3321, the wall base 3323 of the battery compartment side wall 3322, and the inner portion 3311 of the rigid battery cover 331.

[0141] The following is combined Figure 8 , Figure 9This application describes an electronic device 100 provided in an embodiment. Figure 8 This is an exploded view of an electronic device 100 provided in an embodiment of this application. Figure 9 This is a cross-sectional view of an electronic device 100 provided in an embodiment of this application. Figure 6 , Figure 7 The hard-shell battery 30 shown can be assembled in Figure 8 , Figure 9 In the electronic device 100 shown.

[0142] Electronic device 100 may include a display screen 20, a back cover 11, a mid-frame 22, and such as Figure 6 or Figure 7 The hard-cased battery 30 is shown. Figure 8 In the example shown, the mid-frame 22 may be located between the display screen 20 and the back cover 11, forming the bezel 12 of the electronic device 100. The mid-frame 22 may be arranged parallel to the back cover 11. In another example, the electronic device 100 may include a housing 10, which includes a back cover 11 and a bezel 12, and the mid-frame 22 may be housed within the cavity formed by the display screen 20 and the housing 10. Figure 9 The area filled with diagonal lines shows the structure of the middle frame 22.

[0143] The middle frame 22 may include a hollow cavity 25. The cavity 25 may extend through the middle frame 22. The middle frame 22 may include a first end face 222 facing the rear cover 11 and a second end face 223 facing the display screen 20. The inner wall 221 of the cavity 25 may be connected between the first end face 222 and the second end face 223. The inner wall 221 of the cavity 25 may be perpendicular to the rear cover 11 or the display screen 20, and the first end face 222 and the second end face 223 may both be parallel to the rear cover 11 or the display screen 20. The cavity 25 may be used to partially accommodate the hard-shell battery 30. The cavity 25 may form at least a portion of the battery compartment of the electronic device 100. Figure 7 , Figure 8 The base 3323 of the rigid battery box 332 can be housed within the cavity 25 of the middle frame 22.

[0144] The hard-shell battery 30 can be fixed to either the first end face 222 of the mid-frame 22 facing the rear cover 11 or the second end face 223 of the mid-frame 22 facing the display screen 20. Figure 8 In the example shown, the hard-shell battery 30 can be fixed to the first end face 222 of the middle frame 22. Combined Figure 7 , Figure 8 The outer casing extension 333 of the rigid battery casing 330 (such as the cover periphery 3312 of the rigid battery cover 331 or the box wall extension 3324 of the battery box side wall 3322) can be fixed on the first end face 222.

[0145] For example, the rigid battery casing 330 and the middle frame 22 can be secured with screws. The casing extension 333 of the rigid battery casing 330 may include a mounting through hole. The middle frame 22 may include a threaded hole opposite to the mounting through hole. The head of the screw can abut against the casing extension 333 of the rigid battery casing 330, and the screw can pass through the mounting through hole and engage with the threaded hole, thereby securing the rigid battery case 332 to the middle frame 22. Screw fixation is generally more stable, which helps reduce the possibility of the rigid battery 30 moving around freely within the cavity 25, and thus helps reduce the probability of safety hazards arising from the rigid battery case 332. Fixing the rigid battery 30 with screws improves the ease of disassembling the rigid battery 30. However, screw fixation usually makes it difficult to achieve a stable electrical connection between the rigid battery casing 330 and the middle frame 22.

[0146] For example, the rigid battery casing 330 and the middle frame 22 can be fixed together by welding. Solder can be provided between the casing extension 333 of the rigid battery casing 330 and the end face of the middle frame 22. Welding the rigid battery casing 330 and the middle frame 22 also facilitates the electrical connection between the rigid battery casing 330 and the middle frame 22. However, fixing the rigid battery casing 330 by welding may reduce the ease of disassembling the rigid battery 30.

[0147] For example, the rigid battery casing 330 and the middle frame 22 can be fixed together by adhesive. A rigid battery casing 30 adhesive can be provided between the casing extension 333 of the rigid battery casing 330 and the end face of the middle frame 22. The rigid battery casing 30 adhesive can be, for example, double-sided adhesive. Compared with screw fixing or welding fixing, the fixing stability of adhesive may be relatively poor.

[0148] In addition, the rigid battery casing 330 and the middle frame 22 can also be snap-fit ​​connected. For example, the rigid battery casing 330 and the middle frame 22 can each be provided with a snap-fit ​​part 1 and a snap-fit ​​part 2, one of which is a male connector and the other is a female connector. The snap-fit ​​part 1 and the snap-fit ​​part 2 can be snap-fit ​​connected.

[0149] because Figure 8 , Figure 9 The rigid battery 30 shown can be fixed to the middle frame 22 by the outer shell extension 333 of the rigid battery casing 330. The cavity 25 of the middle frame 22 may not have a bottom wall (the bottom wall may correspond to...). Figure 2 (The bottom of the groove 23 shown). Therefore, it is advantageous to reduce the thickness of the electronic device 100. With the thickness of the electronic device 100 remaining unchanged, it is advantageous to increase the size of the hard-shell battery 30, and thus advantageous to increase the capacity of the hard-shell battery 30.

[0150] Furthermore, due to Figure 8The hard-shell battery 30 shown may include a hard battery casing 330, so the hard-shell battery 30 can have a relatively high resistance to puncture by hard and sharp objects; since the hard battery casing 330 itself has relatively high strength, when the hard-shell battery 30 is removed from the electronic device 100, it is beneficial to maintain the sealed environment of the bare cell 300 and reduce the risk of the bare cell 300 being exposed.

[0151] Furthermore, the rigid battery casing 330 has higher strength and rigidity, resulting in relatively smaller deformation of the rigid battery 30 during operation. For example, when the rigid battery 30 heats up, its dimensional expansion is relatively small. In other words, the electronic device 100 does not need to... Figure 6 , Figure 7 The hard-shell battery 30 shown has a relatively large expansion space. This is beneficial for further reducing the thickness of the electronic device 100, and also provides space for other components within the electronic device 100.

[0152] Moreover, with Figure 5 The battery components shown are different. Figure 6 , Figure 7 The battery 30 shown may include fewer components, such as fewer gels, casings, etc. This is beneficial for further reducing the thickness of the electronic device 100 and also for providing space for other components within the electronic device 100.

[0153] Optionally, the mid-frame 22 and the rigid battery casing 330 of the rigid battery 30 can be electrically connected. For example, electronic devices (such as antenna radiators) disposed on the mid-frame 22 can transmit signals that can be conducted through the mid-frame 22 to the rigid battery casing 330.

[0154] The rigid battery casing 330 of the rigid battery 30 may include a conductive material. The conductive material may be, for example, a metal such as steel, aluminum, or titanium. Specifically, the bottom 3321 of the battery compartment and / or the rigid battery cover 331 of the rigid battery casing 330 may be made of a conductive material. Other parts of the rigid battery casing 330 may be made of a rigid conductive material, or other rigid materials. The conductive material of the rigid battery casing 330 can be electrically connected to the middle frame 22 via an electrical connector.

[0155] Optionally, the electronic device 100 may also include multiple spring contacts 34. The spring contacts 34 may be electrical connectors electrically connected between the rigid battery casing 330 and the mid-frame 22. The spring contacts 34 may be fixed to the mid-frame 22 and abut against the rigid battery casing 330 of the rigid battery 30. The spring contacts 34 may be electrically connected between the mid-frame 22 and the rigid battery casing 330. The spring contacts 34 allow for a relatively stable electrical connection between the rigid battery casing 330 and the mid-frame 22. The spring contacts 34 may, for example, be fixed to the mid-frame 22 by welding.

[0156] like Figure 8 As shown, one end of the spring clip 34 can be fixed to the inner wall 221 of the cavity 25 of the middle frame 22, and the other end can abut against the base 3323 of the rigid battery casing 330. Optionally, one end of the spring clip 34 can be fixed to the base 3323 of the casing 330, and the other end can abut against the inner wall 221 of the cavity 25 of the middle frame 22. Optionally, the spring clip 34 can also be fixed to the first end face 222 of the middle frame 22 and abut against the outer casing extension 333 of the rigid battery casing 330. Optionally, the spring clip 34 can also be fixed to the display screen 20 or the back cover 11 and abut against the bottom 3321 of the battery compartment or the rigid battery cover 331 of the rigid battery casing 330.

[0157] This application provides a structure for a spring 34. The length 'a' of the spring 34 can be, for example, 5 mm, the maximum width 'b' of the spring 34 can be, for example, 1.5 mm, and the thickness 'c' of the spring 34 can be, for example, 0.1 mm. It should be understood that the spring 34 can also have other structures, sizes, and specifications, and this application is not limited to the specific structure of the spring 34 provided in the embodiments.

[0158] Optionally, to stabilize the electrical connection between the middle frame 22 and the rigid battery housing 330, the other areas of the rigid battery housing 330, except for the area of ​​the rigid battery housing 330 that abuts against the spring 34, can be insulated from the middle frame 22.

[0159] For example, except for the area where the spring piece 34 is provided on the inner wall 221 of the cavity 25 of the middle frame 22, other areas of the inner wall 221 of the cavity 25 of the middle frame 22 can be covered with insulating material, so that when the base 3323 of the box wall of the rigid battery casing 330 contacts the inner wall 221 of the cavity 25 of the middle frame 22, the rigid battery casing 330 and the middle frame 22 can be insulated.

[0160] For example, except for the area of ​​the rigid battery casing 330 that abuts against the spring 34, other areas of the rigid battery casing 330 can be covered with insulating material, so that when the base 3323 of the casing wall of the rigid battery casing 330 contacts the inner wall 221 of the cavity 25 of the middle frame 22, the rigid battery casing 330 and the middle frame 22 can be insulated.

[0161] For example, the first end face 222 of the middle frame 22 may include a region disposed opposite to the housing extension 333 of the rigid battery housing 330. This region may be covered with an insulating material, which may be located between the middle frame 22 and the housing extension 333 of the rigid battery housing 330, so that the rigid battery housing 330 and the middle frame 22 can be insulated.

[0162] For example, the rigid battery casing 330 may include a rigid resin material. Corresponding to the areas of the battery compartment bottom 3321 and / or the rigid battery cover 331 of the rigid battery casing 330, the rigid battery casing 330 may also include a conductive material (such as a metal plating layer, a conductive film layer, etc.). The conductive material may cover the rigid resin material and be located on the outside of the rigid battery casing 330 (the bare battery cell of the rigid battery 30 is disposed on the inside of the rigid battery casing 330). The thickness of the conductive material may be greater than 0.1–0.4 mm.

[0163] The following is combined Figure 8 , Figure 10 This illustrates the effect of the electrical connection between the rigid battery casing 330 and the middle frame 22.

[0164] The middle frame 22 may include a hollow cavity 25, and the rigid battery casing 330 is located within the cavity 25. Wherein, in Figure 10 In 1001, the middle frame 22 may not be electrically connected to the rigid battery casing 330. Figure 10 (1001 not shown, rigid battery casing 330); in Figure 10 In 1002, the middle frame 22 can be electrically connected to the rigid battery casing 330. Figure 10 (The cavity 25 is not shown in 1002).

[0165] like Figure 10 As shown in 1001, because the rigid battery casing 330 and the middle frame 22 are insulated, the current, after being transmitted to one side of the cavity 25 of the middle frame 22, needs to be further transmitted around the cavity 25 of the middle frame 22 to the opposite side. It can be seen that the current transmission path on the middle frame 22 is relatively longer. This may increase the antenna's return loss, thereby narrowing the antenna's bandwidth and reducing its signal transmission and reception performance.

[0166] like Figure 10 As shown in Figure 1002, since the rigid battery casing 330 and the middle frame 22 are electrically connected, current can flow from one side of the cavity 25 of the middle frame 22 through the rigid battery casing 330 to the opposite side. It can be seen that the current transmission path on the middle frame 22 is relatively short. This is beneficial for reducing antenna return loss, widening antenna bandwidth, and improving antenna signal transmission and reception performance.

[0167] Figure 11 An example of a middle frame 22 provided in an embodiment of this application is shown. Figure 11 The middle frame 22 shown is Figure 8 The middle frame 22 shown can be different. Figure 11 In the shown middle frame 22, the spring contact 34 may not be fixedly mounted on the middle frame 22. The electronic device 100 includes the spring contact 34 (e.g., it can be...). Figure 8 In the case of the spring clip 34 shown, the spring clip 34 can be disposed on the rigid battery casing 330 and abut against the middle frame 22. For example, the spring clip 34 can be fixed to the conductive area of ​​the rigid battery casing 330 and abut against the inner wall 221 of the cavity 25 of the middle frame 22. The cavity 25 can be hollow and can be without a bottom wall. This allows for an electrical connection between the rigid battery casing 330 and the middle frame 22.

[0168] Figure 12 Another middle frame 22 provided in an embodiment of this application is shown. Figure 11 The middle frame 22 shown is Figure 12 The middle frame 22 shown can be different. Figure 12 In the shown middle frame 22, the middle frame may include a groove 23. That is, the middle frame 22 may have a bottom wall 231, which may be formed by the bottom of the groove 23. The thickness of the bottom wall 231 may be, for example, 0.01 mm to 0.6 mm. Optionally, the thickness of the bottom wall 231 may be, for example, 0.2 mm to 0.4 mm. Having a bottom wall 231 in the middle frame 22 can help increase the structural strength of the middle frame 22 and also help improve the flatness of the mounting of the hard-shell battery 30. The greater the thickness of the bottom wall 231, the more beneficial it is to increase the mechanical strength of the middle frame 22, but it may encroach on the space occupied by the hard-shell battery 30.

[0169] Figure 13 This is a schematic structural diagram of an electronic device 100 provided in an embodiment of this application. Figure 13 The assembly relationship between the hard-shell battery 30 and the middle frame 22 is shown. Figure 13 The area filled with diagonal lines illustrates the structure of the middle frame 22. (As shown...) Figure 13 As shown, the hard-shell battery 30 can be housed within the groove 23 of the middle frame 22. The hard-shell battery 30 can be arranged parallel to the bottom wall 231 of the middle frame 22. The opening of the groove 23 can be connected to the first end face 222 of the middle frame 22. Optionally, the rigid battery casing 330 of the hard-shell battery 30 can also be attached to the bottom wall 231 of the middle frame 22. For example, double-sided adhesive can be provided between the bottom wall of the middle frame 22 and the hard-shell battery 30.

[0170] Figure 14 This is a structural schematic diagram of a hard-shell battery 30 provided in an embodiment of this application. Figure 6The hard-shell battery 30 shown is similar. Figure 14 The hard-cased battery 30 shown may include a rigid battery casing 330, which may include a rigid battery cover 331 and a rigid battery case 332. Figure 6 The hard-shell battery 30 shown has a different structure. Figure 14 The rigid battery case 332 shown may have a bottom protrusion 3325 on its bottom 3321. The protrusion direction of the bottom protrusion 3325 may be away from the rigid battery cover 331.

[0171] Figure 14 The external structure of the hard-cased battery 30 can be shown. Along Figure 14 Observation of AA section Figure 14 The hard-shell battery 30 shown can be obtained Figure 15 The image shows a cross-sectional view of the hard-cased battery 30. Along... Figure 14 Observation of BB section Figure 14 The hard-shell battery 30 shown can be obtained Figure 16 Another cross-sectional view of the hard-shell battery 30 shown. Figure 15 , Figure 16 The internal structure of the hard-shell battery 30 can be shown.

[0172] and Figure 7 The hard-shell battery 30 shown is similar. Figure 15 , Figure 16 The hard-shell battery 30 shown may include a bare cell 300, which may include multiple positive electrode materials 301, multiple negative electrode materials 302, and multiple separator materials 304. Figure 7 The bare battery cell shown is different from the 300. Figure 15 , Figure 16 The bare cell 300 shown may include two positive electrode materials 301 of different sizes, two negative electrode materials 302 of different sizes, and two separators 304 of different sizes.

[0173] like Figure 15 , Figure 16 As shown, the bare battery cell 300 may include a first positive electrode material 3011, a second positive electrode material 3012, a first negative electrode material 3021, a second negative electrode material 3022, a first separator 3041, and a second separator 3042. The first positive electrode material 3011, the first negative electrode material 3021, and the first separator 3041 may be located outside the bottom protrusion 3325 of the casing, while the second positive electrode material 3012, the second negative electrode material 3022, and the second separator 3042 may be housed within the bottom protrusion 3325 of the casing.

[0174] For ease of description, it is assumed that section AA can be set parallel to the first direction, and section BB can be set parallel to the second direction, and the second direction can be set perpendicular to the first direction. Optionally, in Figure 14 In the example shown, the first direction may be, for example, the width direction of the hard-shell battery 30, and the second direction may be, for example, the length direction of the hard-shell battery 30. Optionally, in another example, the first direction may be, for example, the length direction of the hard-shell battery 30, and the second direction may be, for example, the width direction of the hard-shell battery 30.

[0175] like Figure 15 As shown, along the first direction, the size of the first positive electrode material 3011 can be larger than the size of the second positive electrode material 3012; along the first direction, the size of the first negative electrode material 3021 can be larger than the size of the second negative electrode material 3022; along the first direction, the size of the first separator 3041 can be larger than the size of the second separator 3042. Along the first direction, the minimum distance between the bottom protrusion 3325 and the side wall of the rigid battery box can be, for example, a first minimum distance a, where a can be greater than 0.

[0176] like Figure 16 As shown, along the second direction, the size of the first positive electrode material 3011 can be larger than the size of the second positive electrode material 3012; along the second direction, the size of the first negative electrode material 3021 can be larger than the size of the second negative electrode material 3022; along the second direction, the size of the first separator 3041 can be larger than the size of the second separator 3042. Along the second direction, the minimum distance between the bottom protrusion 3325 and the side wall of the rigid battery case can, for example, be a second minimum distance b. b can be less than a. For example, b can be 0 or approximately 0. The second minimum distance being approximately zero facilitates the electrical connection between the small-sized positive electrode material 301 and the positive electrode tab, and also facilitates the electrical connection between the small-sized negative electrode material 302 and the negative electrode tab 305.

[0177] like Figure 16 As shown, the bare cell 300 may also include a positive electrode tab ( Figure 16 (Not shown) and negative electrode tab 305. Multiple positive electrode materials 301 can be electrically connected to the positive electrode tab. Multiple negative electrode materials 302 can be electrically connected to the negative electrode tab 305. Both the positive and negative electrode tabs 305 can be electrically connected to the battery connector 31. The sidewall 3036 of the bottom protrusion 3325 can, for example, connect to the sidewall of the rigid battery case 332 (corresponding to...). Figure 7 The base of the box wall 3323 is aligned with one side wall of the box wall, and the box side wall can be on the side of the rigid battery box 332 closest to the battery connector 31.

[0178] The following is combined Figure 17 , Figure 18 This application describes another electronic device 100 provided in the embodiments of this application. Figure 17 This is an exploded view of an electronic device 100 provided in an embodiment of this application. Figure 18 This is a cross-sectional view of an electronic device 100 provided in an embodiment of this application. Figures 14 to 16 The hard-shell battery 30 shown can be assembled in Figure 17 , Figure 18 In the electronic device 100 shown.

[0179] and Figure 8 , Figure 9 Similar to the example shown, electronic device 100 may include a display screen 20, a back cover 11, a mid-frame 22, and a hard-shell battery 30, wherein the mid-frame 22 may include a hollow cavity 25. Optionally, Figure 17 , Figure 18 The middle frame 22 in the example shown may be different Figure 8 , Figure 9 The middle frame 22 is shown. Figure 19 A schematic structural diagram of a middle frame 22 provided in an embodiment of this application is shown.

[0180] like Figures 17 to 19 As shown, the middle frame 22 may include a middle frame support plate 224, which may be connected to at least a portion of the inner wall 221 of the cavity 25 of the middle frame 22 and is disposed perpendicularly to the inner wall 221 of the cavity 25 of the middle frame 22. The middle frame support plate 224 may extend from the inner wall 221 of the cavity 25 of the middle frame 22 toward the center of the cavity 25 of the middle frame 22.

[0181] like Figure 18 As shown, the mid-frame support plate 224 can be arranged parallel to the bottom 3321 of the battery compartment of the hard-shell battery 30. A bottom protrusion 3325 on the bottom 3321 of the battery compartment can extend into the opening 2244 formed by the mid-frame support plate 224. The mid-frame support plate 224 can contact the area of ​​the bottom 3321 of the battery compartment outside the bottom protrusion 3325. Optionally, the area of ​​the bottom 3321 of the battery compartment outside the bottom protrusion 3325 can be adhered to the mid-frame support plate 224 to improve the connection stability between the hard-shell battery 30 and the mid-frame 22.

[0182] Optionally, in one example, the mid-frame support plate 224 can be square-ring-shaped. In another example, the mid-frame support plate 224 can be concave. Figure 19 As shown, the mid-frame support plate 224 may include a first end 2241 and a second end 2242, which are spaced apart to form an open end 2243 of the mid-frame support plate 224. This open end 2243 may be located near the battery connector 31. Figure 19As shown, both the first end 2241 and the second end 2242 can be connected to the cavity sidewall 2211 of the cavity 25 of the middle frame 22. The projection area of ​​the battery connector 31 on the middle frame 22 can span the cavity sidewall 2211. The cavity sidewall 2211 can be the sidewall of the cavity 25 closest to the battery connector 31.

[0183] Increasing the area of ​​the mid-frame support plate 224 can improve the structural strength of the mid-frame 22. Reducing the area of ​​the mid-frame support plate 224 can increase the capacity of the hard-shell battery 30. Optionally, the ratio of the area of ​​the mid-frame support plate 224 to the opening area of ​​the cavity 22 can be approximately 0 to 2 / 3. Optionally, the ratio of the area of ​​the mid-frame support plate 224 to the opening area of ​​the cavity 22 can be approximately 1 / 5 to 1 / 2. For example, the ratio of the area of ​​the mid-frame support plate 224 to the opening area of ​​the cavity 22 can be approximately 1 / 3 to 1 / 4.

[0184] exist Figure 8 , Figure 9 , Figure 13 , Figure 17 , Figure 18 In the example shown, the rigid battery casing 330 can be fixed to the mid-frame 22 of the electronic device 100.

[0185] In another example, Figure 6 , Figure 7 , Figure 14 The housing extension 333 of the rigid battery casing 330 shown can form the mid-frame 22 of the electronic device 100. That is, the rigid battery 30 itself can also act as the mid-frame 22 of the electronic device 100, possessing the functions typically found in a mid-frame 22, such as grounding, electrical functions, and device support functions. For example, electronic devices (such as antenna radiators) within the electronic device 100 can be grounded through the housing extension 333. Relative to... Figure 8 In the example shown, the hard-shell battery 30 is integrally formed with the mid-frame 22, so that the electronic device 100 may not include... Figure 8 The fastener between the hard-shell battery 30 and the middle frame 22 shown may also be omitted. Figure 8 The spring clip 34 shown. This helps to further reduce the thickness of the electronic device 100 and also helps to provide space for other electronic devices 100.

[0186] In yet another example, Figure 6 , Figure 7 , Figure 14The housing extension 333 of the rigid battery housing 330 shown can form a first plate component of the electronic device 100. This first plate component can be assembled with one or more other plate components of the electronic device 100 to form the mid-frame 22 of the electronic device 100. In other words, the housing extension 333 of the rigid battery housing 330 can be part of the mid-frame 22 of the electronic device 100. Electronic components can be mounted on the first plate component. This improves the flexibility of mounting the rigid battery 30 and other electronic components within the electronic device 100.

[0187] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A hard-shell battery (30) used in an electronic device (100), the hard-shell battery (30) comprising a bare cell (300), a hard battery casing (330), and an electrolyte, the hard battery casing (330) comprising a hard battery case (332) and a hard battery cover (331), the hard battery case (332) and the hard battery cover (331) being sealed together to form a sealed space, the bare cell (300) being housed in the sealed space; characterized in that, The outer periphery of the bare cell (300) is in contact with the inner periphery of the rigid battery casing (330); The rigid battery case (332) and the rigid battery cover (331) extend outward at the sealed connection to form a housing extension (333), which is used to fix the rigid battery (30) on the electronic device (100). The outer region of the rigid battery casing (330) includes a conductive region, and the other outer regions of the rigid battery casing (330) are made of insulating material, except for the conductive region. The conductive area is used to abut against the spring contact (34), which is fixedly mounted on the middle frame (22) of the electronic device (100), or The hard-shell battery (30) also includes the spring piece (34), which is fixedly disposed on the conductive area and electrically connected to the conductive area. The spring piece (34) is used to abut against the middle frame (22) of the electronic device (100). The rigid battery box (332) has a bottom protrusion (3325) at the bottom (3321) of the battery box, and the middle frame support plate (224) of the middle frame (22) contacts the area of ​​the bottom (3321) of the battery box outside the bottom protrusion (3325).

2. The hard-shell battery (30) according to claim 1, characterized in that, The outer casing extension (333) is annular and located on the outer periphery of the rigid battery casing (330).

3. The hard-shell battery (30) according to claim 1, characterized in that, The rigid battery casing (330) includes a rigid conductive material and an insulating material. The insulating material partially covers the rigid conductive material and is disposed in areas of the rigid battery casing (330) other than the conductive area.

4. The hard-shell battery (30) according to claim 1, characterized in that, The rigid battery casing (330) includes a conductive material and a rigid insulating material, with the conductive material covering the rigid insulating material and the conductive material correspondingly disposed in the conductive area.

5. The hard-shell battery (30) according to any one of claims 1 to 4, characterized in that, The rigid battery case (332) includes a battery case bottom (3321), and the battery case bottom (3321) or the rigid battery cover (331) is electrically connected to the conductive area.

6. The hard-shell battery (30) according to claim 1, characterized in that, The hard-shell battery (30) also includes a battery connector (31), and on the side near the battery connector (31), the sidewall (3036) of the bottom protrusion (3325) is aligned with the sidewall of the hard battery case (332).

7. The hard-shell battery (30) according to any one of claims 1 to 4 and 6, characterized in that, The housing extension (333) also includes a through hole for passing a screw.

8. The hard-shell battery (30) according to any one of claims 1 to 4 and 6, characterized in that, The outer casing extension (333) is used to fix it to the end face (222) of the middle frame (22) of the electronic device (100), and the main body of the rigid battery casing (330) is used to be at least partially housed in the hollow cavity (25) of the middle frame (22).

9. An electronic device (100), characterized in that, Includes the hard-cased battery (30) as described in any one of claims 1 to 8.

10. The electronic device (100) according to claim 9, characterized in that, The electronic device (100) further includes a middle frame (22), the middle frame (22) includes a hollow cavity (25), the main body of the hard-shell battery (30) is at least partially housed in the cavity (25), the side wall (221) of the cavity (25) is connected to the first end face (222) of the middle frame (22), and the outer shell extension (333) of the hard-shell battery (30) is fixed on the first end face (222).

11. The electronic device (100) according to claim 10, characterized in that, The inner wall of the cavity (25) is provided with a middle frame support plate (224), which is perpendicular to the inner wall of the cavity (25).

12. The electronic device (100) according to claim 11, characterized in that, The hard-shell battery (30) also includes a battery connector (31). The middle frame support plate (224) includes a first end (2241) and a second end (2242). Both the first end (2241) and the second end (2242) are connected to the cavity sidewall (2211). The cavity sidewall (2211) is the sidewall of the cavity (25) closest to the battery connector (31).

13. The electronic device (100) according to claim 11 or 12, characterized in that, The ratio of the area of ​​the middle frame support plate (224) to the opening area of ​​the cavity (25) is greater than 0 and less than 2 / 3.

14. The electronic device (100) according to claim 11 or 12, characterized in that, The hard-shell battery (30) is attached to the middle frame support plate (224).

15. The electronic device (100) according to claim 9, characterized in that, The electronic device (100) further includes a middle frame (22), the middle frame (22) includes a groove (23), the main body of the hard-shell battery (30) is at least partially housed in the groove (23), the bottom of the groove (23) forms the bottom wall (231) of the middle frame (22), the opening of the groove (23) is connected to the first end face (222) of the middle frame (22), and the outer shell extension (333) of the hard-shell battery (30) is fixed on the first end face (222).

16. The electronic device (100) according to claim 15, characterized in that, The thickness of the bottom wall (231) is greater than 0.01 mm and less than 0.6 mm.

17. The electronic device (100) according to any one of claims 10 to 12, 15, and 16, characterized in that, The bottom (3321) of the rigid battery cover (331) or the rigid battery box (332) is electrically connected to the middle frame (22).

18. The electronic device (100) according to any one of claims 10 to 12, 15, and 16, characterized in that, The outer shell extension (333) is fixed to the first end face (222) by any of the following: solder, adhesive, screw, snap-fit.

19. The electronic device (100) according to claim 9, characterized in that, The outer shell extension (333) is integrally formed with the middle frame (22) of the electronic device (100).

20. The electronic device (100) according to claim 19, characterized in that, The electronic device (100) also includes electronic components that are grounded via a housing extension (333) of the hard-shell battery (30).

21. An electronic device, characterized in that, include: A hard-shell battery (30) includes a bare battery cell (300) and a hard battery casing (330). The hard battery casing (330) includes a hard battery case (332) and a hard battery cover (331). The hard battery case (332) and the hard battery cover (331) are sealed together to form a sealed space. The bare battery cell (300) is housed in the sealed space and fixed inside the hard battery casing (330). The outer periphery of the bare battery cell (300) is flush with the hard battery casing (330). The rigid battery case (332) and the rigid battery cover (331) are sealed together to form a housing extension (333). The housing extension (333) extends outward from the main body of the rigid battery housing (330). The outer area of ​​the rigid battery housing (330) includes a conductive area. Except for the conductive area, the other outer areas of the rigid battery housing (330) are made of insulating material. The bottom of the battery case (3321) of the rigid battery case (332) is provided with a bottom protrusion (3325). The middle frame (22) includes a hollow cavity (25), the main body of the hard-shell battery (30) is at least partially housed in the cavity (25), the side wall (221) of the cavity (25) is connected to the first end face (222) of the middle frame (22), the outer shell extension (333) of the hard-shell battery (30) is fixed on the first end face (222), the middle frame (22) also includes a middle frame support plate (224), the middle frame support plate (224) contacts the area of ​​the bottom of the battery box (3321) other than the bottom protrusion (3325); An electrical connector, which is electrically connected between the middle frame (22) and the rigid battery casing (330); The electrical connector is a spring (34), one end of which is fixed to the side wall of the cavity (25), and the other end of which abuts against the conductive area of ​​the rigid battery casing (330).

22. An electronic device, characterized in that, include: A hard-shell battery (30) includes a bare battery cell (300) and a hard battery casing (330). The hard battery casing (330) includes a hard battery case (332) and a hard battery cover (331). The hard battery case (332) and the hard battery cover (331) are sealed together to form a sealed space. The bare battery cell (300) is housed in the sealed space and fixed inside the hard battery casing (330). The outer periphery of the bare battery cell (300) is flush with the hard battery casing (330). The rigid battery case (332) and the rigid battery cover (331) are sealed together to form a housing extension (333). The housing extension (333) extends outward from the main body of the rigid battery housing (330). The outer area of ​​the rigid battery housing (330) includes a conductive area. Except for the conductive area, the other outer areas of the rigid battery housing (330) are made of insulating material. The bottom of the battery case (3321) of the rigid battery case (332) is provided with a bottom protrusion (3325). The middle frame (22) includes a groove (23), the main body of the hard-shell battery (30) is at least partially housed in the groove (23), the bottom of the groove (23) forms the bottom wall (231) of the middle frame (22), the opening of the groove (23) is connected to the first end face (222) of the middle frame (22), the outer shell extension (333) of the hard-shell battery (30) is fixed on the first end face (222), the middle frame (22) also includes a middle frame support plate (224), the middle frame support plate (224) contacts the area of ​​the bottom of the battery box (3321) other than the bottom protrusion (3325); An electrical connector, which is electrically connected between the middle frame (22) and the rigid battery casing (330); The electrical connector is a spring (34), one end of which is fixed to the side wall of the groove (23), and the other end of which abuts against the conductive area of ​​the rigid battery casing (330).

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