CN216015474U - Electronic device - Google Patents

Abstract

The application provides an electronic device. The electronic equipment comprises a battery cell and a circuit board assembly, wherein the battery cell is arranged in a first cavity formed by the middle frame, and the circuit board assembly is arranged in a second cavity formed by the middle frame. The main body part and the cover plate part of the middle frame can be assembled with each other, and when the assembling relation of the main body part and the cover plate part is released, the battery cell can be moved out of the second cavity. Through butt between circuit board and electric core to when electric core replacement, the electric connection relation between electric core and the circuit board can be relieved relatively easily, also recovers relatively easily. In one possible case, the cell protection circuit may be disposed on the circuit board assembly. In another possible case, the cells may be replaced with batteries having cell protection circuits.

Description

Electronic device

Technical Field

The present application relates to the field of battery cells and electronic devices, and more particularly, to electronic devices.

Background

The cells currently used in the market are typically soft-packed cells. The soft-packaged battery cell is mounted in a battery cell bin of the electronic equipment through colloid, for example. The hardness of the shell of the soft-packaged battery cell is relatively low, the shell is easy to break, the protection effect on the battery cell is limited, and battery cell accidents are relatively easy to cause. The capacity of a conventional hard shell cell is generally somewhat inferior to that of a soft-pack cell given the same specifications.

SUMMERY OF THE UTILITY MODEL

The application provides an electronic device, and aims to provide a new scheme for setting a power supply in the electronic device.

In a first aspect, an electronic device is provided, which includes:

an electric core;

the battery cell is accommodated in a first cavity formed by the middle frame, the middle frame comprises a main body part and a cover plate part which are assembled with each other, and under the condition that the assembly relation of the main body part and the cover plate part is released, the first cavity forms an opening which is used for moving the battery cell out of the first cavity;

the circuit board assembly is accommodated in a second cavity formed by the middle frame, the circuit board assembly comprises a battery cell protection circuit and a power management element, and the battery cell protection circuit is electrically connected with the power management element through a circuit on the circuit board assembly;

the first circuit board is electrically connected between the battery cell protection circuit and the battery cell, and the external pin of the battery cell is abutted to the first circuit board.

And moving the battery cell protection circuit to a circuit board assembly of the electronic equipment, and realizing safety protection on voltage, current and the like of the battery cell through the circuit board assembly. Because the flexibility of the layout and wiring on the circuit board assembly is higher, the occupied space of the battery in the electronic equipment can be effectively saved under the condition that the number of the devices is the same. Because the battery can not have a cell protection circuit, the process complexity of the battery is favorably reduced, the cell capacity is improved, or the thickness of the whole machine is reduced, and the production efficiency and the reliability of the battery are improved.

Through the mode of circuit board and electric core butt, be favorable to recovering the relation between first circuit board and the electric core under the scene of changing the battery. The scheme provided by the application can be applied to a battery cell replacement scene. For example, a user may move an insufficient battery cell or a low-life battery cell out of the electronic device and move a sufficient battery cell or a long-life battery cell into the electronic device.

Since the battery can be replaced, the user can flexibly program the charging sequence of the battery. For example, a user may prepare two batteries, one for a fast charging battery and the other for a slow charging battery. The charging power of the fast charging battery may be relatively large. Alternatively, the capacity of the fast-charging battery may be relatively small. The charging power of the slow charging battery may be relatively small and the capacity may be relatively large. In the case of time slack, the user may use a slow charging battery. When the time is urgent, for example, when the capacity of the slow charging battery is exhausted and the slow charging battery cannot be charged to a sufficient amount of electricity for a short time, the user may replace the slow charging battery with the fast charging battery to more conveniently use the electronic device in the case of an emergency.

With reference to the first aspect, in certain implementations of the first aspect, the first circuit board extends from the first cavity to the second cavity.

The electrical connections within the two cavities may be made electrically by the circuit board spanning the two cavities.

With reference to the first aspect, in certain implementations of the first aspect, the middle frame has a first inner side surface, the first inner side surface is a surface of the middle frame that forms the first cavity, and the first circuit board is attached to the first inner side surface or the cover plate portion.

The first circuit board is attached to the middle frame, so that the position movement of the first circuit board caused by the movement of the battery core in the middle frame is reduced. When a new cell is inserted into the first cavity, the new cell can still be electrically connected to the first circuit board relatively easily.

With reference to the first aspect, in some implementation manners of the first aspect, a conductive elastic sheet is disposed on the first circuit board, and the conductive elastic sheet abuts against an external pin of the battery cell; alternatively, the first and second electrodes may be,

the external pin of electric core is the elasticity pin, elasticity pin butt is in on the first circuit board.

The first circuit board is provided with the conductive elastic sheet, so that the electric connection relationship between the battery cell and the first circuit board can be recovered.

The external pin of electric core is the elasticity pin, is favorable to resumeing the electric connection relation between electric core and the first circuit board.

With reference to the first aspect, in certain implementation manners of the first aspect, a charging interface is disposed on the middle frame, and the power management element is electrically connected between the cell protection circuit and the charging interface.

With reference to the first aspect, in certain implementations of the first aspect, the first circuit board includes a first line and a second line, the first line is electrically connected between the charging interface and the power management element, and the second line is electrically connected between the cell protection circuit and the cell.

The electric connection relationship between the charging interface and the battery cell can be realized through one circuit board. The number of devices in the electronic equipment is reduced.

With reference to the first aspect, in certain implementations of the first aspect, the electronic device further includes a second circuit board electrically connected between the charging interface and the power management element.

Through two circuit boards, can be favorable to arranging in a flexible way from electric core to the walking line between the interface that charges.

With reference to the first aspect, in certain implementations of the first aspect, the charging interface is disposed on the cover portion, and the charging interface is electrically connected to the power management element through a line on the cover portion, a line on the body portion, and an electrical connector electrically connected between the body portion and the circuit board assembly.

The electric connection relation between the charging interface and the circuit board assembly is realized through the circuit formed by the middle frame, and the occupied space of various devices in the electronic equipment is saved.

With reference to the first aspect, in certain implementations of the first aspect, the hard casing of the battery cell includes a casing extension portion, the casing extension portion extends outward from a body of the hard casing, and a guide rail matched with the casing extension portion is disposed on an inner side surface of the middle frame, where the first cavity is formed.

The shell extension part can move along the guide rail on the inner side surface of the middle frame so as to slide out of the first cavity. The user can extend another battery core into the first cavity from the opening. Specifically, the housing extension of the new cell may be fitted with a guide rail on the middle frame and scribed into the first cavity. Therefore, a user can replace the battery cell in the electronic equipment. The guide rails can be used for restraining the moving track of the battery cell in the first cavity, so that the electric connection relationship between the battery cell and a device in the electronic equipment can be conveniently restored.

Alternatively, the inner wall of the guide rail may be provided with a resilient abutment member. The elastic abutting part can be used for abutting the shell extending part of the battery cell so as to reduce the shaking of the shell extending part in the guide rail. The elastic contact member may be, for example, a sponge, a foam, a spring sheet, or the like.

Alternatively, the resilient abutment member may be a conductor, for example. The shell extension part can be electrically connected with the elastic abutting part, so that the hard shell can form the ground of the electronic equipment, and the flexibility of grounding other electronic devices in the electronic equipment is favorably improved. Since the rigid outer shell and the middle frame are electrically connected, current can flow from one side of the cavity of the middle frame to the opposite side of the cavity of the middle frame through the rigid outer shell. The transmission path of the current over the middle frame is relatively short. The method is favorable for reducing the return loss of the antenna, widening the bandwidth of the antenna and improving the signal transceiving performance of the antenna.

Optionally, the mode that the battery core is limited on the middle frame may further include modes of pasting, clamping, screw fixing and the like.

With reference to the first aspect, in certain implementations of the first aspect, the electronic device further includes an elastic component,

the elastic component is abutted between the cover plate part and the battery core, or,

the elastic component abuts against a second inner side face and the battery core, and the second inner side face is the surface of the middle frame, which forms the first cavity and is farthest away from the cover plate part.

When the cover plate part and the main body part of the middle frame are assembled together, the elastic part can be used for limiting the battery cell, and the external pins of the battery cell can be aligned to the electric connectors (such as a welding disc, an elastic sheet, pins and the like) on the flexible circuit board. If the elastic component is arranged on the second inner side face, when the assembly relation between the cover plate part and the main body part of the middle frame is released, the restoring force of the elastic component can drive the battery cell to move towards the direction of the cover plate part, and convenience in replacing the battery cell is improved.

With reference to the first aspect, in certain implementations of the first aspect, the electronic device further includes an elastic electrical connection member abutting and electrically connected between the middle frame and the hard outer casing of the battery cell.

An electronic device (e.g., an antenna radiator, etc.) disposed on the bezel may emit a signal that may be conducted through the bezel to the hard shell. Since the rigid outer shell and the middle frame are electrically connected, current can flow from one side of the cavity of the middle frame to the opposite side of the cavity of the middle frame through the rigid outer shell. The transmission path of the current over the middle frame is relatively short. The method is favorable for reducing the return loss of the antenna, widening the bandwidth of the antenna and improving the signal transceiving performance of the antenna.

With reference to the first aspect, in certain implementations of the first aspect, one end of the cover portion is connected to the main body portion by a rotation shaft, and the cover portion is rotated with respect to the rotation shaft with an assembled relationship of the main body portion and the cover portion released.

With reference to the first aspect, in certain implementations of the first aspect, the cover plate portion is located at a head, a tail, or a side of the electronic device.

In a second aspect, an electronic device is provided, the electronic device comprising:

the battery comprises a battery core and a battery core protection circuit, and a hard shell of the battery comprises a shell extension part which extends outwards from a body of the hard shell;

the battery is accommodated in a first cavity formed by the middle frame, a guide rail matched with the shell extension part is arranged on the inner side surface of the middle frame forming the first cavity, the middle frame comprises a main body part and a cover plate part which are assembled with each other, and the first cavity forms an opening used for moving the battery out of the first cavity under the condition that the assembly relation of the main body part and the cover plate part is released;

the circuit board assembly is accommodated in a second cavity formed by the middle frame and comprises a power management element;

the first circuit board is electrically connected between the circuit board assembly and the battery, an external pin of the battery is abutted against the first circuit board, and the power management element is electrically connected with the battery through the first circuit board.

The shell extension part can move along the guide rail on the inner side surface of the middle frame so as to slide out of the first cavity. The user can extend another battery core into the first cavity from the opening. Specifically, the housing extension of the new cell may be fitted with a guide rail on the middle frame and scribed into the first cavity. Therefore, a user can replace the battery cell in the electronic equipment. The guide rails can be used for restraining the moving track of the battery cell in the first cavity, so that the electric connection relationship between the battery cell and a device in the electronic equipment can be conveniently restored.

With reference to the second aspect, in some implementation manners of the second aspect, a conductive elastic sheet is disposed on the first circuit board, and the conductive elastic sheet abuts against an external pin of the battery cell; alternatively, the first and second electrodes may be,

the external pin of electric core is the elasticity pin, elasticity pin butt is in on the first circuit board.

With reference to the second aspect, in certain implementations of the second aspect, the first circuit board extends from the first cavity to the second cavity.

With reference to the second aspect, in certain implementations of the second aspect, the middle frame has a first inner side surface, the first inner side surface is a surface of the middle frame that forms the first cavity, and the first circuit board is attached to the first inner side surface or the cover plate portion.

With reference to the second aspect, in certain implementation manners of the second aspect, a charging interface is disposed on the middle frame, and the power management element is electrically connected between the cell protection circuit and the charging interface.

With reference to the second aspect, in certain implementations of the second aspect, the first circuit board includes a first line and a second line, the first line is electrically connected between the charging interface and the power management element, and the second line is electrically connected between the power management element and the battery.

With reference to the second aspect, in certain implementations of the second aspect, the electronic device further includes a second circuit board electrically connected between the charging interface and the power management element.

With reference to the second aspect, in certain implementations of the second aspect, the charging interface is disposed on the cover portion, and the charging interface is electrically connected to the power management element through a line on the cover portion, a line on the body portion, and an electrical connector electrically connected between the body portion and the circuit board assembly.

With reference to the second aspect, in certain implementations of the second aspect, the electronic device further includes an elastic component,

the elastic member abuts between the lid portion and the battery, or,

the elastic part is abutted between a second inner side face and the battery, and the second inner side face is a surface of the middle frame, which forms the first cavity and is farthest away from the cover plate part.

With reference to the second aspect, in certain implementations of the second aspect, the electronic device further includes a resilient electrical connector abutting and electrically connected between the bezel and the rigid housing of the battery.

With reference to the second aspect, in certain implementations of the second aspect, one end of the cover portion is connected to the main body portion by a rotation shaft, and the cover portion is rotated with respect to the rotation shaft with an assembled relationship of the main body portion and the cover portion released.

With reference to the second aspect, in some implementations of the second aspect, the cover plate portion is located at a head, a tail, or a side of the electronic device.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic structure diagram of a battery cell provided in an embodiment of the present application.

Fig. 3 is an exploded view of an electronic device according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural view of releasing an assembled relationship between a main body portion and a cover plate portion of a middle frame according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 6 is a schematic structure diagram of a battery cell provided in an embodiment of the present application.

Fig. 7 is a cross-sectional view of an electronic device provided in an embodiment of the present application.

Fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 10 is an exploded view of an electronic device according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 12 is an exploded view of an electronic device according to an embodiment of the present disclosure.

Fig. 13 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 14 is a schematic flow chart of a method for identifying a battery cell according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an electronic device 100 provided in an embodiment of the present application. The electronic device 100 may be, for example, a terminal consumer product or a 3C electronic product (computer, communication, consumer), such as a mobile phone, a mobile power supply, a portable device, a tablet computer, an e-reader, a notebook computer, a digital camera, a wearable device, a vehicle-mounted terminal, an earphone, and so on. The electronic device 100 may, for example, be a mobile device. The moving device may be, for example, a vehicle, a motorized skateboard, a motorized bicycle, or the like. The embodiment shown in fig. 1 is described by taking the electronic device 100 as a mobile phone.

The electronic apparatus 100 may include a case 10, a display screen 20, and a battery cell 30. Specifically, the housing 10 may include a bezel 12 and a rear cover 11. The bezel 12 may be located between the display screen 20 and the rear cover 11. The bezel 12 may surround the periphery of the display screen 20 and surround the periphery of the rear cover 11. The cavity formed among the display screen 20, the frame 12 and the rear cover 11 can be used for placing the battery cell 30. The cavity of the electronic apparatus 100 for placing the battery cells 30 may be referred to as a cell compartment or a battery compartment. The battery cell 30 may be used to power electronics within the electronic device 100. The battery cell 30 may be, for example, a lithium ion secondary battery cell, a sodium ion secondary battery cell, a potassium ion secondary battery cell, a magnesium ion secondary battery cell, a zinc ion secondary battery cell, an aluminum ion secondary battery cell, or the like.

Fig. 2 is a schematic structural diagram of a battery cell 30 according to an embodiment of the present application.

The battery cell 30 may include a rigid casing 310, a positive pole piece 301, a negative pole piece 302, a positive pole tab (not shown in fig. 2), a negative pole tab 305, an electrolyte 303, a separator 304 (corresponding communication accessories and circuits, etc. are not shown).

The material of the hard shell 310 may be a hard material, such as metal, etc. The material of the hard shell 310 may be, for example, the following criteria: the technical standard YS/T294- "hard alloy blank for stamping hard shell battery cases", the technical standard YS/T877-2013- "nickel plating cases for rechargeable hard shell batteries", the technical standard YS/T914- "2013-" aluminum cases for power lithium hard shell batteries ", the technical standard YS/T797-" aluminum cases for portable lithium ion hard shell batteries ", the national standard GB/T34212-2017-" cold rolled steel strips for hard shell battery cases ", the technical standard YS/T712-" aluminum alloy plates and strips for mobile phone hard shell battery cases ", and the like.

In the example shown in fig. 2, the hard case 310 may include a first hard case 311 and a second hard case 312. The opening of the first hard case 311 and the opening of the second hard case 312 are oppositely arranged, and the opening of the first hard case 311 is hermetically connected with the opening of the second hard case 312. The location where the first rigid packet 311 and the second rigid packet 312 meet may form a sealed edge of the rigid shell 310. The sealing edge may extend outwardly from the main body portion of the hard outer shell 310 and may therefore also be referred to as the outer shell extension 313. The housing extension 313 may surround the battery cell 30. The cavity formed by the first rigid case 311 and the second rigid case 312 may be used to house the positive electrode tab 301, the negative electrode tab 302, the electrolyte 303, the separator 304, and the like.

In other examples, the hard shell 310 may also have other shapes. For example, the hard case 310 may include a hard electrical core cover and a hard electrical core box. The periphery of the hard core cover and the opening of the hard core box may be sealingly connected to form a housing extension 313.

The positive electrode plate 301 and the negative electrode plate 302 can be used for extracting metal ions (such as lithium ions) to realize the storage and release of energy. The positive electrode plate 301 and the negative electrode plate 302 are main energy storage portions of the battery cell 30, and can represent energy density, cycle performance and safety performance of the battery cell 30. The electrolyte 303 may be a transport carrier for metal ions. The separator 304 is permeable to metal ions, but the separator 304 is not conductive by itself, so that the separator 304 can separate the positive pole piece 301 and the negative pole piece 302 to prevent a short circuit between the positive pole piece 301 and the negative pole piece 302.

The positive electrode tab 301 may include a positive electrode current collector and a positive electrode material disposed on the positive electrode current collector. The positive electrode material includes, but is not limited to, lithium composite metal oxide (such as lithium nickel cobalt manganese oxide, etc.), polyanionic lithium compound LiMx (PO4) y (M is Ni, Co, Mn, Fe, Ti, V, x is more than or equal to 0 and less than or equal to 5, y is more than or equal to 0 and less than or equal to 5), and the like.

The negative electrode tab 302 may include a negative electrode current collector and a negative electrode material disposed on the negative electrode current collector. Anode materials include, but are not limited to, at least one of: metallic lithium, lithium alloys, lithium titanate, natural graphite, artificial graphite, MCMB, amorphous carbon, carbon fiber, carbon nanotubes, hard carbon, soft carbon, graphene oxide, silicon carbon compounds, silicon oxy compounds, and silicon metal compounds.

The properties of the separator 304 itself should be favorable for the battery cell 30 to achieve good charge and discharge performance. For example, to stably and reliably separate the positive electrode tab 301 and the negative electrode tab 302, the separator 304 should have a certain strength and ductility to avoid being punctured, i.e., the separator 304 should have a certain resistance to mechanical abuse. As another example, during charging and discharging, the battery cell 30 itself may generate heat. At higher temperatures, the separator 304 should also have relatively high stability, i.e., the separator 304 should have some resistance to heat or abuse.

The membrane 304 may include a membrane substrate. The separator substrate may be a porous insulating material. The pores in the membrane substrate may be permeable to metal ions (the pores in the membrane substrate may be transport channels for metal ions). The separator substrate may include, for example, Polyethylene (PE), polypropylene (PP), and the like.

The diaphragm 304 may also include a diaphragm coating. The membrane coating may be attached to one or both sides of the membrane substrate to facilitate high ductility, high rupture temperature, low closed cell temperature, etc. of the membrane 304. In addition, the separator coating may also have other properties, such as having relatively high adhesion, and the like. The separator coating layer may include an organic coating layer, an inorganic coating layer, and/or an organic-inorganic composite coating layer. The inorganic coating may comprise a ceramic coating. The ceramic coating may include at least one of: alumina, silica, titania, zirconia, zinc oxide, barium oxide, magnesium oxide, beryllium oxide, calcium oxide, thoria, 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), and the like. The organic coating may include at least one of: polyvinylidene fluoride coatings, vinylidene fluoride-hexafluoropropylene copolymer coatings, polystyrene coatings, aramid coatings, polyacrylate or its modifications coatings, polyester coatings, polyarylate coatings, polyacrylonitrile coatings, aromatic polyamide coatings, polyimide coatings, polyethersulfone coatings, polysulfone coatings, polyetherketone coatings, polyetherimide coatings, polybenzimidazoles. The organic-inorganic composite coating can be prepared by mixing the inorganic coating and the organic coating.

The plurality of positive electrode tabs 301 may each be electrically connected with a positive electrode tab. A plurality of negative pole pieces 302 may each be electrically connected with a negative pole tab 305. Optionally, the battery cell 30 may further include a positive external pin and a negative external pin 332. The positive external pin can be electrically connected with the positive electrode lug. The negative external pin 332 may be electrically connected with the negative tab 305. The external pin of the battery cell 30 may also be referred to as a battery cell connector.

In one example, as shown in fig. 2, the external pins of the battery cell 30 may protrude out of the rigid housing 310. In another example, the external pins of the battery cell 30 may be located inside the hard case 310; the hard housing 310 may include openings disposed opposite the external leads so that the external leads may be exposed out of the hard housing 310.

Optionally, the battery cell 30 may further include a battery cell colloid 320. The cell colloid 320 can be pasted between the positive pole piece 301 and the hard shell 310 or between the negative pole piece 302 and the hard shell 310. The cell gel 320 may be, for example, a hot melt adhesive. The hot melt adhesive can be solid at normal temperature. The hot melt adhesive has relatively low viscosity at normal temperature. After the hot melt adhesive is heated to a certain temperature, the fluidity of the hot melt adhesive can be increased to a certain extent; the viscosity of the hot melt adhesive can be increased to some extent under a certain pressure. After cooling, the hot melt adhesive can bond the pole piece or diaphragm to the rigid housing 310. The hot melt adhesive can be used for constraining the relative position of the pole piece in the battery cell 30, reducing the variation of the relative position between the positive pole piece 301 and the negative pole piece 302, and reducing the risk of short circuit between the positive pole piece 301 and the negative pole piece 302. Optionally, the cell colloid 320 may also be replaced by the separator 304.

Fig. 3 is an exploded view of an electronic device 100 according to an embodiment of the present disclosure.

Electronic device 100 may include a middle frame 40. In the example shown in fig. 3, the middle frame 40 may form the rim 12 of the case 10, and may be disposed in parallel with respect to the rear cover 11 of the case 10. That is, the case 10 may be assembled by the middle frame 40 and the rear cover 11. In another example, the bezel 12 and the rear cover 11 shown in FIG. 1 may be connected in a manner other than assembly, making the housing 10 a separate component; wherein the frame 12 and the rear cover 11 may be two parts of the housing 10. The cavity formed by the display screen 20 and the housing 10 can be used for accommodating the middle frame 40, and the middle frame 40 can be arranged in parallel relative to the rear cover 11 of the housing 10. In this example, the structure of the housing 10 may be slightly modified with reference to the structural design of the middle frame 40 hereinafter.

The bezel 12 may include a first edge 121, a second edge 122, a third edge 123, and a fourth edge 124. The first edge 121 may be located at a head portion of the electronic device 100 and the fourth edge 124 may be located at a tail portion of the electronic device 100. The second side 122 may be connected between the first side 121 and the fourth side 124, and the third side 123 may be connected between the first side 121 and the fourth side 124.

The middle frame 40 may have a second cavity 41 and a first cavity 42. The cavity of the middle frame 40 may be used to accommodate various devices in the electronic apparatus 100, including the battery cell 30, one or more circuit board assemblies, and the like. In one example, the cavity may be hollow, for example, i.e. the cavity may comprise two openings that are through each other. In another example, the cavity may also be formed by a groove comprising a groove bottom and a groove wall.

The middle frame 40 may include an inner rim 45 that forms the second cavity 41 and the first cavity 42. In the example shown in fig. 3, the second cavity 41 may be formed by the first edge 121, the second edge 122, a first portion of the third edge 123, a first portion of the fourth edge 124, and the inner rim 45. The first cavity 42 may be formed by a second portion of the third side 123, a second portion of the fourth side 124, and the inner edge 45.

In the example shown in fig. 3, the electronic device 100 may include a circuit board assembly 50 disposed in the second cavity 41 of the middle frame 40, and the battery cell 30 disposed in the first cavity 42 of the middle frame 40. The circuit board assembly 50 may be, for example, a motherboard, a platelet, etc. of the electronic device 100. The electronics on the circuit board assembly 50 may be electrically connected to the battery cells 30, such that the battery cells 30 may provide power to the electronics on the circuit board assembly 50.

The second cavity 41 may be formed by a groove, for example. In the example shown in fig. 3, the opening of the recess may be towards the back cover 11. The space formed by the rear cover 11 and the groove can be used for accommodating the circuit board assembly 50. In other examples, the opening of the recess may also be towards the display screen 20. The circuit board assembly 50 may be disposed on the bottom of the recess. The walls of the recess may surround the periphery of the circuit board assembly 50. Optionally, a line may also be provided on the groove bottom of the groove. For example, the circuit board assembly 50 may be electrically connected to the traces on the bottom of the groove. In other examples, the second cavity 41 may also be a hollow cavity. An example in which the second cavity 41 is a hollow cavity may be referred to the following description of the first cavity 42.

The first cavity 42 may be, for example, a hollow cavity. The first cavity 42 may include a first opening facing the rear cover 11 and a second opening facing the display screen 20. The space formed by the display screen 20, the first cavity 42 and the rear cover 11 may be used to accommodate the battery cell 30. In other examples, the first cavity 42 may also be formed by a groove. Examples of the first cavity 42 being a recess may be found in relation to the description of the second cavity 41 above.

The inner side forming the first cavity 42 (which may refer to the side located within the electronic device that is generally vertically disposed with respect to the rear cover or display screen) may be used to provide the guide rails 451. The guide rails 451 formed on the inner side surfaces may be arranged parallel to the rear cover 11 or the display screen 20 of the electronic apparatus 100, for example. The guide rail 451 may be used to provide the housing extension 313 shown in fig. 3. That is, the housing extension 313 may be snapped into the guide track 451 on the inner side of the middle frame 40. The guide rail 451 may be used to limit the position of the battery cell 30.

The middle frame 40 may include a body portion 43 and a cover portion 44 that are mutually assemblable. The first side 121, at least a portion of the second side 122, and at least a portion of the third side 123 of the bezel 12 may form the main portion 43 of the bezel 40. The fourth side portion 124 of the bezel 12 may form the cover portion 44 of the center frame 40. In the example shown in fig. 3, the cover portion 44 may be located at the rear of the electronic device 100. In other possible examples, the cover portion 44 may also be located at other edges, such as the head of the electronic device 100. In this case, the first side 121 of the bezel 12 may form the cover portion 44 of the middle bezel 40, and the fourth side 124, at least a portion of the second side 122, and at least a portion of the third side 123 of the bezel 12 may form the main portion 43 of the middle bezel 40.

The body portion 43 and the cover portion 44 may be assembled as one body, and the assembled relationship of the body portion 43 and the cover portion 44 may be released. When the assembled relationship between the body portion 43 and the cover portion 44 is released, the cavity of the middle frame 40 may additionally have an opening, so that the device accommodated in the cavity of the middle frame 40 may pass through the additionally formed opening and be removed from the electronic apparatus 100. The user can move a new device through this additional formed opening into the cavity of the middle frame 40 and reassemble the body portion 43 and the cover portion 44. Whereby a user may replace a device within the electronic device 100.

As shown in fig. 3, when the main body portion 43 and the cover portion 44 of the middle frame 40 are released from the assembled relationship, the first cavity 42 may form an additional opening through which the battery cell 30 may be moved. Specifically, housing extension 313 may move along guide track 451 on the inside of center frame 40 to slide out of first cavity 42. From which the user can extend another cell 30 into the first cavity 42. Specifically, the housing extension 313 of the new battery cell 30 may be engaged with the guide rail 451 on the middle frame 40 and be drawn into the first cavity 42. So that the user can replace the battery cell 30 in the electronic apparatus 100.

Alternatively, the inner wall of the guide rail 451 may be provided with an elastic abutment member. The elastic abutment member may be used to abut the housing extension portion 313 of the battery cell 30 to reduce the shaking of the housing extension portion 313 within the guide rail 451. The elastic contact member may be, for example, a sponge, a foam, a spring sheet, or the like.

Alternatively, the resilient abutment member may be a conductor, for example. The housing extension 313 may be electrically connected with the elastic abutting member, so that the hard housing 310 may form a ground of the electronic apparatus 100, which is beneficial to increase flexibility of grounding other electronic devices in the electronic apparatus 100. Since the rigid shell 310 is electrically connected to the bezel 40, current can flow through the rigid shell 310 from one side of the cavity of the bezel 40 to the opposite side of the cavity of the bezel 40. The transmission path of the current over the middle frame 40 is relatively short. The method is favorable for reducing the return loss of the antenna, widening the bandwidth of the antenna and improving the signal transceiving performance of the antenna.

Optionally, the limitation of the battery cell 30 on the middle frame 40 may further include adhesion, clamping, and screw fixation.

The example shown in fig. 3 may be applied to a cell replacement scenario, for example. For example, the user may move a cell 30 with insufficient charge or a cell 30 with a shorter lifetime out of the electronic device 100, and move a cell 30 with sufficient charge or a cell with a longer lifetime into the electronic device 100.

Fig. 4 shows an example before and after the assembled relationship of the main body portion 43 and the cover portion 44 of the middle frame 40 is released.

In the example shown in fig. 4, the main body portion 43 and the first end of the cover plate portion 44 of the middle frame 40 may be connected by a rotating shaft 45. The second ends of the body portion 43 and the cover portion 44 may be connected when the assembled relationship of the body portion 43 and the cover portion 44 is not released. The assembled relationship of the body portion 43 and the cover portion 44 is released, which may mean that the connected relationship of the body portion 43 and the second end of the cover portion 44 is released. When the main body portion 43 and the second end of the cover portion 44 are not connected, the cover portion 44 may rotate about the rotation shaft 45, thereby exposing the devices inside the electronic apparatus 100.

It should be understood that the body portion 43 and the cover portion 44 may be disassembled in other ways, such as the body portion 43 and the cover portion 44 being completely disconnected. The embodiment of the present application may not limit the specific embodiment of releasing the assembling relationship of the body portion 43 and the cover portion 44.

Referring to fig. 3, fig. 5 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present application. Fig. 5 shows an electrical connection relationship between the battery cell 30 and the circuit board assembly 50. In the example shown in fig. 5, the external connection pin 33 of the battery cell 30 may be disposed toward the cover plate portion 44 of the electronic apparatus 100. After the battery cell 30 is replaced, a new battery cell 30 may still be electrically connected to the devices within the electronic apparatus 100.

The electronic device 100 may include a middle frame 40, a circuit board assembly 50, a battery cell 30, and a flexible circuit board 61. The circuit board assembly 50 is disposed in the second cavity 41 of the middle frame 40, and the battery cell 30 is disposed in the first cavity 42 of the middle frame 40. The cover portion 44 of the middle frame 40 may be provided with a charging interface 51 of the electronic device 100. The electronic device 100 may charge the battery cell 30 through the charging interface 51.

One end of the flexible circuit board 61 may be attached to the body portion 43 of the middle frame 40, and the other end of the flexible circuit board 61 may be attached to the cover portion 44 of the middle frame 40. The length of the flexible circuit board 61 may be relatively slightly long, so that the flexible circuit board 61 does not prevent the assembled relationship between the main body portion 43 and the cover portion 44 from being released, and does not prevent the battery cell 30 from being removed from the first cavity 42.

A cell protection circuit 52 and a Power Management Unit (PMU) 53 may be disposed on circuit board assembly 50.

The cell protection circuit 52 may be used to protect the battery cell 30, so that the charge state or the discharge state of the battery cell 30 may be relatively safe. The cell protection circuit 52 may perform, for example, overcharge protection, overdischarge protection, overcurrent protection, overtemperature protection, and the like on the battery cell 30. The cell protection circuit 52 may include, for example, a charging circuit, a discharging circuit, a cell monitoring circuit, a cell protection circuit, and the like.

The power management element 53 may be used to control the charge and discharge states of the battery cell 30. For example, the power management element 53 may monitor the charging current, the discharging current, the voltage difference between the positive electrode and the negative electrode, and the like of the battery cell 30 in real time through a cell monitoring circuit on the cell protection circuit 52. Based on the cell state information monitored in real time, the power management element 53 may also approximate other cell state information, such as the current charging speed, the remaining charging time, the percentage of the current capacity of the cell 30 with respect to the cell capacity, the cell temperature, the current dc impedance, and the like. The power management element 53 may also adjust the charging state or the discharging state of the battery cell 30 through one or more of a charging circuit, a discharging circuit, a cell monitoring circuit, and a cell protection circuit of the cell protection circuit 52.

The battery cell protection circuit 52 is moved to the circuit board assembly 50 of the electronic device 100, and the voltage, the current and the like of the battery cell 30 are safely protected by the circuit board assembly 50. Because the flexibility of the layout and wiring on the circuit board assembly 50 is high, the occupied space of the battery in the electronic device 100 can be effectively saved under the condition that the number of the devices is the same. Because the battery does not have the cell protection circuit 52, the process complexity of the battery is favorably reduced, the capacity of the cell 30 is improved, or the thickness of the whole machine is reduced, and the production efficiency and the reliability of the battery are improved.

The electrical connection between the above-described devices is described below.

The flexible circuit board 61 may include a first wiring. The first line may be electrically connected between the charging interface 51 and the circuit board assembly 50. The power management element 53 may be electrically connected between the first line of the flexible circuit board 61 and the cell protection circuit 52 via a line on the circuit board assembly 50.

In one example, the flexible circuit board 61 may be electrically connected to pins or pads on the circuit board assembly 50. In another example, the flexible circuit board 61 and the circuit board assembly 50 may be two parts of one device. For example, the circuit board assembly 50 may be a rigid portion of the device and the flexible circuit board 61 may be a flexible portion of the device. Part of the conductive layer and part of the insulating layer of the device are distributed on the circuit board assembly 50 and the flexible circuit board 61.

The flexible circuit board 61 may further include a second wiring. The second line may be electrically connected between the battery cell 30 and the circuit board assembly 50. The cell protection circuit 52 may be electrically connected to the second line of the flexible circuit board 61 via a line on the circuit board assembly 50.

The external pin 33 of the battery cell 30 and the flexible circuit board 61 may be electrically connected in an abutting manner. Thus, when the assembled relationship of the cover plate portion 44 and the body portion 43 of the middle frame 40 is released, the electrical connection relationship of the battery cell 30 and the flexible circuit board 61 can be released accordingly. When the assembled relationship of the cover plate portion 44 and the body portion 43 of the middle frame 40 is restored, the electrical connection relationship of the battery cell 30 and the flexible circuit board 61 can be restored accordingly.

In one example, the flexible circuit board 61 may be provided with a positive conductive spring and a negative conductive spring. The conductive elastic sheet may be provided directly on the flexible circuit board 61, or may be provided on a reinforcing plate (hard plate) of the flexible circuit board 61, wherein the flexible circuit board 61 itself or the reinforcing plate may be fixed to the cover plate portion 44 of the center frame 40 by means of, for example, adhesion, welding, or the like. The positive conductive elastic sheet may abut against the positive external pin of the battery cell 30 and be electrically connected to the positive line in the second line of the flexible circuit board 61. The negative conductive elastic sheet can abut against the negative external pin of the battery cell 30 and is electrically connected with the negative line in the second line of the flexible circuit board 61. The positive conductive elastic piece and the negative conductive elastic piece can transmit electric signals, and can also be used for limiting the battery cell 30 in the first cavity 42.

In another example, as shown in fig. 6, the positive external pin 331 and the negative external pin 332 may be provided with a built-in spring 333, so that the positive external pin 331 and the negative external pin 332 are both elastic pins (also may be referred to as retractable pins). The positive external pin 331 may abut on a positive electrical connector (e.g., a pad, a pin, a stiffener, etc.) of the flexible circuit board 61 and be electrically connected to a positive line of the second line of the flexible circuit board 61. The negative external pin 332 may abut against the negative electrical connector of the flexible circuit board 61 and be electrically connected to the negative line of the second line of the flexible circuit board 61. The electrical connections on the flexible circuit board 61 may be secured to the cover portion 44 of the center frame 40. The retractable external pin 33 may be used to limit the electric core 30 in the first cavity 42, besides being used to output and input electric signals.

Therefore, the electrical signal from the charging interface 51 may be conducted to the power management element 53 through the first line of the flexible circuit board 61, and the power management element 53 may input the charging signal to the cell protection circuit 52, so that the current output by the external power supply may be input to the battery cell 30. The electrical signal from the battery cell 30 may be input to the power management element 53 through the second line of the flexible circuit board 61 and the cell protection circuit 52, and the power management element 53 may control the discharge state of the battery cell 30 and provide the electrical signal to other electronic devices through the circuit board assembly 50.

In the example shown in fig. 5, it is beneficial to improve the convenience of replacing the battery cell 30 by, for example, a retractable external pin, a conductive elastic sheet, or the like. The electrical connection relationship between the pins of the battery cell 30 and the flexible circuit board 61 can be released relatively easily, and can also be restored relatively easily. The elastic abutting force between the battery cell 30 and the middle frame 40 may be relatively large, so as to improve the electrical connection stability between the battery cell 30 and the flexible circuit board 61. Therefore, the occupied space of the elastic element in the electronic device 100 after being compressed can be relatively small, which is beneficial to increasing the capacity of the battery cell 30.

As shown in fig. 5, the plurality of inner sides forming the first cavity 42 may include an inner side 421 disposed opposite to the cover portion 44. The inner side 421 may be an inner side farthest from the cover portion 44 among a plurality of inner sides forming the first cavity 42. Optionally, an elastic member (not shown in fig. 5) may be disposed on the inner side 421. When the cover plate portion 44 and the body portion 43 of the middle frame 40 are assembled together, the elastic member may press against the battery cell 30. When the assembled relationship between the cover portion 44 and the body portion 43 of the middle frame 40 is released, the restoring force of the elastic member may drive the battery cell 30 to move toward the cover portion 44, which is advantageous for improving the convenience of replacing the battery cell 30. Alternatively, the resilient member 46 may be a conductor.

The schematic configuration shown in fig. 7 can be obtained by observing the section a-a in fig. 5.

In the example shown in fig. 7, the inner side surfaces forming the first cavity 42 include an inner side surface 422 and an inner side surface 423 that are disposed in opposing parallel. The inner side 422 and the inner side 423 may each be provided with a guide 451 that engages with the housing extension 313 of the battery cell 30. The inner side surfaces forming the second cavity 41 include oppositely disposed inner side surfaces 424, 425. Medial side 424 may be both sides of the same medial edge 45 as medial side 422. Height h of medial surface 422₁May be greater than height h of medial side 424₂。

In the example shown in fig. 7, the opening of the second cavity 41 may be directed toward the rear cover 11. To ensure the mechanical stability of inner edge 45 of middle frame 40, guide rails 451 on inner sides 422 and 423 may be disposed adjacent to display screen 20. The guide rail 451 of the inner side 422 may be interposed between the groove bottom of the second cavity 41 and the display screen 20 with respect to the height direction of the electronic apparatus 100. Accordingly, the housing extension 313 of the battery cell 30 may be disposed proximate to the display screen 20. With respect to the height direction of the electronic apparatus 100, the housing extension portion 313 of the battery cell 30 may be interposed between the groove bottom of the second cavity 41 and the display screen 20. In the example shown in fig. 7, the guide track 451 may be formed by a blind groove.

The housing extension 313 of the battery cell 30 may also be disposed at other positions. Other configurations of the rail 451 within the electronic device 100 that mates with the housing extension 313 are also possible. For example, the inner edges 45 forming the inner side surfaces 422, 424 may include rails formed by through slots that may extend between the inner side surfaces 422, 424. The housing extension 313 may be interposed between the groove bottom of the second cavity 41 and the rear cover 11 with respect to the height direction of the electronic apparatus 100. For another example, the rear cover 11 also has an inner edge. The inner rim of rear cover 11 may be disposed opposite the inner rim of middle frame 40, and the space between the inner rim of rear cover 11 and the inner rim of middle frame 40 may form a guide rail for engaging with housing extension 313. The housing extension 313 may be interposed between the groove bottom of the second cavity 41 and the rear cover 11 with respect to the height direction of the electronic apparatus 100.

Optionally, the electronic device 100 may further include a resilient electrical connector 54. With reference to fig. 3 and 7, the elastic electrical connector 54 may abut between the rigid outer shell 310 of the battery cell 30 and the middle frame 40. In the example shown in fig. 7, the resilient electrical connector 54 may abut a sidewall of one of the hard electrical core boxes forming the hard housing 310. Other locations of the rigid housing 310 are also possible, such as the top or bottom of the rigid housing 310. So that the bezel 40 and the hard shell 310 can be electrically connected. For example, an electronic device (e.g., an antenna radiator, etc.) disposed on the bezel 40 may transmit a signal that may be conducted through the bezel 40 to the hard shell 310. Since the rigid shell 310 is electrically connected to the bezel 40, current can flow through the rigid shell 310 from one side of the cavity of the bezel 40 to the opposite side of the cavity of the bezel 40. The transmission path of the current over the middle frame 40 is relatively short. The method is favorable for reducing the return loss of the antenna, widening the bandwidth of the antenna and improving the signal transceiving performance of the antenna.

Referring to fig. 3, fig. 8 is a schematic structural diagram of another electronic device 100 provided in the embodiment of the present application. Fig. 8 shows another electrical connection relationship between the battery cell 30 and the circuit board assembly 50. In the example shown in fig. 8, after the battery cell 30 is replaced, a new battery cell 30 may still be electrically connected to the devices in the electronic apparatus 100.

Similar to the example shown in fig. 5, the electronic apparatus 100 shown in fig. 8 may include a middle frame 40, a circuit board assembly 50, and a battery cell 30. The circuit board assembly 50 is disposed in the second cavity 41, and the battery cell 30 is disposed in the first cavity 42. The cover portion 44 of the middle frame 40 may be provided with a charging interface 51 of the electronic device 100. A cell protection circuit 52 and a power management element 53 may be disposed on circuit board assembly 50. The cell protection circuit 52 is electrically connected between the battery cell 30 and the power management element 53. The power management element 53 is electrically connected between the cell protection circuit 52 and the charging interface 51.

Slightly different from the example shown in fig. 5, the external connection pin 33 of the battery cell 30 shown in fig. 8 may be disposed toward the inner side 422 of the middle frame 40, and the inner side may be an inner side forming the first cavity 42. The inner side 422 may be located between the circuit board assembly 50 and the battery cell 30. In addition, the electronic device 100 shown in fig. 8 may include the flexible circuit board 61 and the flexible circuit board 62.

One end of the flexible circuit board 61 may be attached to the body portion 43 of the middle frame 40, and the other end of the flexible circuit board 61 may be attached to the cover portion 44 of the middle frame 40. The length of the flexible circuit board 61 may be relatively slightly long, so that the flexible circuit board 61 does not prevent the assembled relationship between the main body portion 43 and the cover portion 44 from being released, and does not prevent the battery cell 30 from being removed from the first cavity 42. The flexible circuit board 61 may be electrically connected between the charging interface 51 and the circuit board assembly 50. Referring to the embodiment of the example shown in fig. 5, the flexible circuit board 61 is electrically connected to the circuit board assembly 50.

The power management element 53 may be electrically connected between the flexible circuit board 61 and the cell protection circuit 52 via wiring on the circuit board assembly 50. The cell protection circuit 52 may be electrically connected between the flexible circuit board 62 and the power management element 53 via wiring on the circuit board assembly 50.

The flexible circuit board 62 may be electrically connected between the circuit board assembly 50 and the external connection pin 33 of the battery cell 30. The flexible circuit board 62 may extend from the circuit board assembly 50 toward the battery cell 30. The flexible circuit board 62 may span the inner rim 45 forming the inner side 422.

Referring to the embodiment of the example shown in fig. 5, the flexible circuit board 61 is electrically connected to the circuit board assembly 50. The specific implementation of the flexible circuit board 62 electrically connected to the external pin 33 of the battery cell 30 can be referred to as the specific implementation of the example shown in fig. 5 in which the flexible circuit board 61 is electrically connected to the external pin 33 of the battery cell 30.

Alternatively, as shown in fig. 8, the cover plate portion 44 of the middle frame 40 or the hard casing 310 of the battery cell 30 may be provided with the elastic member 46. The resilient member 46 may abut between the cover portion 44 and the hard shell 310. When the cover plate portion 44 and the body portion 43 of the middle frame 40 are assembled together, the elastic member 46 may be used to limit the position of the battery cell 30, which is beneficial to align the external pins 33 of the battery cell 30 with the electrical connectors (e.g., pads, clips, pins, etc.) on the flexible circuit board 62.

In another example, an elastic member may be provided on the inner side 421 forming the first cavity 42 and disposed opposite to the cover plate portion 44. The inner side 421 may be an inner side farthest from the cover portion 44 among a plurality of inner sides forming the first cavity 42. When the cover plate portion 44 and the body portion 43 of the middle frame 40 are assembled together, the elastic member may be used to limit the electrical core 30, which is beneficial to align the external pins 33 of the electrical core 30 with the electrical connectors (such as pads, clips, pins, etc.) on the flexible circuit board 62. When the assembled relationship between the cover portion 44 and the body portion 43 of the middle frame 40 is released, the restoring force of the elastic member may drive the battery cell 30 to move toward the cover portion 44, which is advantageous for improving the convenience of replacing the battery cell 30.

In addition, if the elastic member 46 can be electrically connected to the hard cover 310 (the elastic member 46 can be a conductor), the hard cover 310 can be electrically connected to the middle frame 40 through the elastic member 46. Thus, it is advantageous to reduce the transmission path of the current on the middle frame 40. The rigid housing 310 may, for example, serve as a ground for the electronic device 100.

Referring to fig. 3, fig. 9 is a schematic structural diagram of another electronic device 100 provided in the embodiment of the present application. Fig. 9 shows yet another electrical connection relationship between the battery cell 30 and the circuit board assembly 50. In the example shown in fig. 9, after the battery cell 30 is replaced, a new battery cell 30 may still be electrically connected to the device in the electronic apparatus 100.

Similar to the example shown in fig. 9, the electronic apparatus 100 shown in fig. 9 may include the middle frame 40, the circuit board assembly 50, the battery cell 30, the flexible circuit board 61, and the flexible circuit board 62. The circuit board assembly 50 is disposed in the second cavity 41, and the battery cell 30 is disposed in the first cavity 42. The cover portion 44 of the middle frame 40 may be provided with a charging interface 51 of the electronic device 100. A cell protection circuit 52 and a power management element 53 may be disposed on circuit board assembly 50. The charging interface 51 may be electrically connected to the power management element 53 via the flexible circuit board 61. The power management element 53 may be electrically connected between the cell protection circuit 52 and the charging interface 51 via circuitry on the circuit board assembly 50. The cell protection circuit 52 may be electrically connected between the battery cell 30 and the power management element 53 via the flexible circuit board 62.

Slightly different from the example shown in fig. 8, the external connection pin 33 of the battery cell 30 shown in fig. 9 may be disposed toward the inner side 421 of the middle frame 40. The inner side surface 421 may be disposed opposite to the cover portion 44, and the inner side surface 421 may be an inner side surface farthest from the cover portion 44 among a plurality of inner side surfaces forming the first cavity 42. The flexible circuit board 62 may extend from the circuit board assembly 50 toward the battery cell 30. The flexible circuit board 62 may span the inner rim 45 forming the inner side 421.

Alternatively, as shown in fig. 9, the cover plate portion 44 of the middle frame 40 or the hard casing 310 of the battery cell 30 may be provided with the elastic member 46. The resilient member 46 may abut between the cover portion 44 and the hard shell 310. When the cover plate portion 44 and the body portion 43 of the middle frame 40 are assembled together, the elastic component 46 may be used to limit the electrical core 30, which is beneficial to align the external pins 33 of the electrical core 30 with the electrical connectors (such as pads, clips, pins, etc.) on the flexible circuit board 62, so that the external pins 33 of the electrical core 30 may be relatively tightly pressed against the electrical connectors on the flexible circuit board 62. In addition, if the elastic member 46 can be electrically connected to the hard cover 310 (the elastic member 46 can be a conductor), the hard cover 310 can be electrically connected to the middle frame 40 through the elastic member 46. Thus, it is advantageous to reduce the transmission path of the current on the middle frame 40. The rigid housing 310 may, for example, serve as a ground for the electronic device 100.

Fig. 10 is an exploded view of another electronic device 100 according to an embodiment of the present application. The electronic device 100 shown in fig. 10 is similar to the electronic device 100 shown in fig. 3, and the electronic device 100 may include a middle frame 40 having a second cavity 41 and a first cavity 42. The middle frame 40 may include a body portion 43 and a cover portion 44 that are mutually assemblable. The electronic device 100 may further include the battery cell 30 and the circuit board assembly 50. The circuit board assembly 50 may be disposed in the second cavity 41. The battery cell 30 may be disposed in the first cavity 42. The inner side surface forming the first cavity 42 may be provided with a guide track 451, and the guide track 451 may be engaged with the housing extension 313 of the battery cell 30. When the assembly relationship between the main body portion 43 and the cover portion 44 of the middle frame 40 is released, the first cavity 42 may form an additional opening, and the housing extension 313 may move along the guide rail 451 on the inner side surface of the middle frame 40, so that the battery cell 30 may slide out of the first cavity 42 through the additional formed opening.

The circuit board assembly 50 shown in fig. 10 is different from the circuit board assembly 50 shown in fig. 3. Accordingly, the second cavity 41 and the first cavity 42 shown in fig. 10 have different structures from those of the second cavity 41 and the first cavity 42 shown in fig. 3.

In the example shown in fig. 10, the inner edges 45 forming the second cavity 41 and the first cavity 42 may be disposed in parallel with respect to the cover plate portion 44 of the middle frame 40. The second cavity 41 may be formed by the first edge 121, a first portion of the second edge 122, a first portion of the third edge 123, and the inner edge 45 of the bezel 12. The first cavity 42 may be formed by a second portion of the second side 122, a second portion of the third side 123, the fourth side 124, and the inner edge 45 of the bezel 12. The size, shape, etc. of the circuit board assembly 50 may be adapted to the second cavity 41. The size, shape, etc. of the battery cell 30 can be adapted to the first cavity 42. The structure of the second cavity 41 does not generally change whether the body portion 43 and the cover portion 44 are assembled as one body or not. In the case where the assembled relationship of the body portion 43 and the cover portion 44 of the middle frame 40 is released, the first cavity 42 may additionally have an opening.

Referring to fig. 10, fig. 11 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present application. Fig. 11 shows an electrical connection relationship between the battery cell 30 and the circuit board assembly 50. In the example shown in fig. 11, the external connection pin 33 of the battery cell 30 may be disposed away from the cover plate portion 44 of the electronic apparatus 100 toward the circuit board assembly 50. After the battery cell 30 is replaced, a new battery cell 30 may still be electrically connected to the devices within the electronic apparatus 100.

The electronic device 100 may include a middle frame 40, a circuit board assembly 50, and a battery cell 30. The circuit board assembly 50 is disposed in the second cavity 41 of the middle frame 40, and the battery cell 30 is disposed in the first cavity 42 of the middle frame 40. The cover portion 44 of the middle frame 40 may be provided with a charging interface 51 of the electronic device 100. The electronic device 100 may charge the battery cell 30 through the charging interface 51.

The charging interface 51 on the cover portion 44 of the middle frame 40 may be electrically connected with the circuit board assembly 50 in the second cavity 41.

For example, the charging interface 51 may be electrically connected to the circuit board assembly 50 by electrically connecting the cover plate portion 44 of the middle frame 40 to the main body portion 43 and electrically connecting the main body portion 43 of the middle frame 40 to the circuit board assembly 50. The main body 43 of the middle frame 40 may be electrically connected to the circuit board assembly 50 through electrical connectors such as a flexible circuit board and a conductive elastic sheet. In one example, the cover portion 44 of the middle frame 40 may rotate relative to the body portion 43 of the middle frame 40 via a rotation shaft 45, and the cover portion 44 of the middle frame 40 may be electrically connected to the body portion 43 of the middle frame 40 via the rotation shaft 45. In another example, the cover plate portion 44 of the middle frame 40 may be snap-fit connected and electrically connected to the body portion 43 of the middle frame 40.

As another example, charging interface 51 may be electrically connected to circuit board assembly 50 via a flexible circuit board. Referring to fig. 10 and 11, a flexible circuit board may be attached to the fourth and third sides 124 and 123 of the electronic device 100, for example. In a scenario where the cover part 44 and the main part 43 are connected by the rotating shaft 45, the flexible circuit board may bypass the rotating shaft 45 to electrically connect the charging interface 51 and the circuit board assembly 50.

The power management element 53 may be electrically connected between the charging interface 51 and the cell protection circuit 52 via circuitry on the circuit board assembly 50. The electronic device 100 may further include a flexible circuit board 61. The flexible circuit board 61 may be electrically connected between the circuit board assembly 50 and the battery cell 30. The external pin 33 of the battery cell 30 and the flexible circuit board 61 may be electrically connected in an abutting manner. The electrical connection between the flexible circuit board 61 and the battery cell 30 and the circuit board assembly 50 can be referred to the electrical connection between the flexible circuit board 62 and the battery cell 30 and the circuit board assembly 50 in the example shown in fig. 9.

In other examples, the cover plate portion 44 of the middle frame 40 or the rigid housing 310 of the battery cell 30 may be provided with an elastic member. The resilient member may abut between the cover portion 44 and the hard shell 310. When the cover plate portion 44 and the main body portion 43 of the middle frame 40 are assembled together, the elastic component may abut against the battery cell 30 and is used for limiting the battery cell 30, which is beneficial to aligning the external pins 33 of the battery cell 30 with the electrical connectors (such as pads, elastic pieces, pins, etc.) on the flexible circuit board 61. Alternatively, the resilient member may be a conductor.

The example shown in fig. 11 illustrates a case where the circumscribed pin 33 of the battery cell 30 is disposed away from the lid portion 44. In other possible solutions, the external pin 33 of the battery cell 30 may also be disposed at other positions in the electronic device 100. For example, the external pin 33 of the battery cell 30 may face the cover plate portion 44 of the middle frame 40, or the external pin 33 of the battery cell 30 may face a side of the electronic device 100. Specific electrical connection modes can refer to examples shown in fig. 5, 8 and 9.

Fig. 12 is an exploded view of another electronic device 100 according to an embodiment of the present disclosure. The electronic device 100 shown in fig. 12 is similar to the electronic device 100 shown in fig. 10, and the electronic device 100 may include a middle frame 40 having a second cavity 41 and a first cavity 42. The electronic device 100 may further include the battery cell 30 and the circuit board assembly 50. The circuit board assembly 50 may be disposed in the second cavity 41. The battery cell 30 may be disposed in the first cavity 42. The inner side surface forming the first cavity 42 may be provided with a guide track 451, and the guide track 451 may be engaged with the housing extension 313 of the battery cell 30. The middle frame 40 may include a body portion 43 and a cover portion 44 that are mutually assemblable. When the assembly relationship between the main body portion 43 and the cover portion 44 of the middle frame 40 is released, the first cavity 42 may form an additional opening, and the housing extension 313 may move along the guide rail 451 on the inner side surface of the middle frame 40, so that the battery cell 30 may slide out of the first cavity 42 through the additional formed opening.

Unlike the example shown in fig. 10, the cover portion 44 may be located at a side of the electronic device 100. As shown in fig. 12, the bezel 12 of the electronic device 100 may include a first side 121 located at a head of the electronic device 100, a second side 122 located at a side of the electronic device 100, a third side 123 located at a side of the electronic device 100, and a fourth side 124 located at a tail of the electronic device 100. The first side 121, the second side 122, portions of the third side 123 and the fourth side 124 of the bezel 12 may form the main portion 43 of the bezel 40. Portions of the third side 123 of the bezel 12 may form the cover portion 44 of the center frame 40. In other possible examples, the cover portion 44 may also be formed by other edges, such as the second edge 122.

With reference to fig. 12, fig. 13 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present application. Fig. 13 shows an electrical connection relationship between the battery cell 30 and the circuit board assembly 50. In the example shown in fig. 13, the external connection pin 33 of the battery cell 30 may be disposed toward the cover plate portion 44 of the electronic apparatus 100. After the battery cell 30 is replaced, a new battery cell 30 may still be electrically connected to the devices within the electronic apparatus 100.

The electronic device 100 may include a middle frame 40, a circuit board assembly 50, and a battery cell 30. The circuit board assembly 50 is disposed in the second cavity 41 of the middle frame 40, and the battery cell 30 is disposed in the first cavity 42 of the middle frame 40. The main body portion 43 of the middle frame 40 may be provided with a charging interface 51 of the electronic device 100 (corresponding to the fourth side portion 124 of the frame 12 in fig. 12). The electronic device 100 may charge the battery cell 30 through the charging interface 51.

The charging interface 51 on the main body portion 43 of the middle frame 40 may be electrically connected with the circuit board assembly 50 in the second cavity 41. For example, the first wiring on the main body portion 43 of the middle frame 40 is electrically connected to the circuit board assembly 50, so that the charging interface 51 can be electrically connected to the circuit board assembly 50. The main body 43 of the middle frame 40 may be electrically connected to the circuit board assembly 50 through electrical connectors such as a flexible circuit board and a conductive elastic sheet.

The power management element 53 may be electrically connected between the charging interface 51 and the cell protection circuit 52 via circuitry on the circuit board assembly 50.

In one example, the electronic device 100 may further include a flexible circuit board (not shown in fig. 13) provided on the main body portion 43. The flexible circuit board may be electrically connected between the cell protection circuit 52 on the circuit board assembly 50 and the second line on the main body portion 43 of the middle frame 40.

The second wiring on the main body portion 43 of the middle frame 40 may be electrically connected to the battery cell 30 through the lid portion 44. For example, the cover plate portion 44 of the middle frame 40 may be rotated with respect to the body portion 43 of the middle frame 40 by a rotation shaft 45, and the cover plate portion 44 of the middle frame 40 may be electrically connected to the body portion 43 of the middle frame 40 by the rotation shaft 45. For another example, the cover portion 44 of the middle frame 40 may be snap-fit connected to and electrically connected to the body portion 43 of the middle frame 40.

The external pin 33 of the battery cell 30 and the cover plate portion 44 of the middle frame 40 may be electrically connected in an abutting manner.

For example, the cover portion 44 may be provided with a positive conductive tab and a negative conductive tab. The positive conductive elastic piece may abut against the positive external pin of the battery cell 30 and be electrically connected to the positive line in the cover plate portion 44. The negative conductive spring may abut against the external negative pin of the battery cell 30 and be electrically connected to the negative line in the cover portion 44. The positive conductive elastic piece and the negative conductive elastic piece can transmit electric signals, and can also be used for limiting the battery cell 30 in the first cavity 42.

For another example, the positive external pin and the negative external pin can be provided with springs, so that the positive external pin and the negative external pin are retractable pins. The positive external pin may abut a positive electrical connector (e.g., a pad, a pin, etc.) on the cover portion 44 and electrically connect to a positive trace in the cover portion 44. The negative external pin may abut against the negative electrical connector of the cover portion 44 and electrically connect with the negative trace in the cover portion 44. The retractable external pin 33 may be used to limit the electric core 30 in the first cavity 42, besides being used to output and input electric signals.

In another example, the electronic device 100 may further include a flexible circuit board (not shown in fig. 13) disposed on the cover plate portion 44. One end of the flexible circuit board may be electrically connected to the circuit board assembly 50, and the other end may be electrically connected to the external pin 33 of the battery cell 30 in an abutting manner. The flexible circuit board may be attached to the cover plate portion 44 of the center frame 40. The specific embodiment of the flexible circuit board abutting against the external pin 33 of the battery cell 30 can refer to the above specific embodiment of the external pin 33 of the battery cell 30 abutting against the cover plate portion 44 of the middle frame 40

The electrical connection of the flexible circuit board to the circuit board assembly 50 can be referred to the electrical connection of the flexible circuit board 62 to the circuit board assembly 50 in the example shown in fig. 9.

In the example shown in fig. 13, the electronic device 100 may further include an elastic member 46. The elastic member 46 may be provided on the inner side 421 disposed opposite to the cover plate portion 44. The inner side 421 may be an inner side farthest from the cover portion 44 among a plurality of inner sides forming the first cavity 42. When the cover plate portion 44 and the main body portion 43 of the middle frame 40 are assembled together, the elastic component 46 may be used to limit the electrical core 30, so as to facilitate aligning the external pins 33 of the electrical core 30 with electrical connectors (such as pads, elastic pieces, pins, etc.) on the electronic device 100, and to facilitate enabling the external pins 33 to press against the cover plate portion 44. When the assembly relationship between the cover portion 44 and the body portion 43 of the middle frame 40 is released, the restoring force of the elastic member 46 can drive the battery cell 30 to move toward the cover portion 44, which is beneficial to improving the convenience of replacing the battery cell 30.

The example shown in fig. 13 illustrates a case where the circumscribed pin 33 of the battery cell 30 is disposed toward the lid portion 44. In other possible solutions, the external pin 33 of the battery cell 30 may also be disposed at other positions in the electronic device 100. For example, the external pin 33 of the battery cell 30 may face away from the cover plate portion 44 of the middle frame 40, or the external pin 33 of the battery cell 30 may face toward the inner edge 45 of the middle frame 40, and the like. Specific electrical connection modes can refer to examples shown in fig. 5, 8 and 9.

The present application explains how a battery including a cell 30 and not including a cell protection circuit 52 is electrically connected to other components of an electronic apparatus 100 by way of example of fig. 1 to 13. In the solution provided in the embodiment of the present application, the old battery cell 30 may be removed from the cavity formed by the middle frame 40, and the new battery cell 30 may still be electrically connected to other components of the electronic device 100 after being removed into the cavity formed by the middle frame 40. In the example shown in fig. 1 to 13, the cell protection circuit 52 is provided on the circuit board assembly 50 within the electronic apparatus 100. That is, the cell protection circuit 52 is provided independently of the battery cells 30.

The scheme provided by the embodiment of the application can also be applied to a battery with the cell protection circuit 52 and the battery cell 30. The cell protection circuit 52 and the battery cell 30 may be assembled together to form a battery. The cell protection circuit 52 of the battery can be electrically connected with the external pin 33 of the cell 30. The external pin of the battery may be an external pin or port of the cell protection circuit 52. The electrical connection relationship between the external pin of the battery and other components of the electronic device 100 may refer to the electrical connection relationship between the external pin 33 of the battery cell 30 and other components of the electronic device 100.

Since the battery can be replaced, the user can flexibly program the charging sequence of the battery. For example, a user may prepare two batteries, one for a fast charging battery and the other for a slow charging battery. The charging power of the fast charging battery may be relatively large. Alternatively, the capacity of the fast-charging battery may be relatively small. The charging power of the slow charging battery may be relatively small and the capacity may be relatively large. In the case of time slack, the user may use a slow charging battery. When the time is urgent, for example, when the capacity of the slow charging battery is exhausted and the slow charging battery cannot be charged to a sufficient amount of electricity for a short time, the user may replace the slow charging battery with the fast charging battery to more conveniently use the electronic device in the case of an emergency.

With reference to the embodiments shown in fig. 1 to 13, the cell protection circuit 52 in the electronic apparatus 100 may be disposed on the circuit board assembly 50 of the electronic apparatus 100, and therefore, the cell protection circuit 52 on the circuit board assembly 50 is relatively difficult to replace. While the battery cells 30 are relatively easier to replace than the cell protection circuit 52.

In one possible scenario, a user intends to replace the battery cell 30 within the electronic device 100 for some purpose. A user may purchase a battery having the same external configuration as the battery cell 30 in the electronic device 100. However, the internal parameters of the battery purchased by the user may be different from the internal parameters of the original battery cell 30 in the electronic device 100. One possible example is that the battery purchased by the user is the pirate cell 30. As yet another possible example, a battery purchased by a user includes the cell protection circuit 52. If the user replaces the battery, a safety hazard may result.

In another scenario, the original battery of the electronic device 100 includes the battery cell 30 and the cell protection circuit 52. The user purchases a battery having the same appearance and shape as the original battery, but the parameters of the battery are different from the original battery parameters. For example, a battery newly purchased by a user is a pirate battery; as another example, a battery newly purchased by a user does not include the cell protection circuit 52. If the user replaces the battery, a safety hazard may result.

Fig. 14 is a schematic flow chart of a method for identifying a battery cell according to an embodiment of the present application. The method illustrated in fig. 14 may be performed, for example, by a processor of an electronic device. The processor may be, for example, a cell protection circuit, a power management element, a central processor, a preprocessor, etc.

1401, charge and discharge parameters of the replaced battery are acquired.

The charge and discharge parameters include, but are not limited to, cell internal resistance, cell microscopic impedance, cell capacity, charge time, charge temperature rise, etc.

Assuming that the first battery includes a cell and does not include a cell protection circuit; the second battery comprises a battery core and a battery core protection circuit. The appearance structure of the first battery is the same as that of the second battery. Since the cell protection circuit occupies a certain space in the battery, the battery capacity of the second battery may be smaller than that of the first battery. Since the impedance of the second battery includes the impedance of the cell and the impedance of the cell protection circuit, the impedance of the first battery may be different from the impedance of the second battery.

In addition, the manufacturing process of the battery, the material selected by the battery, the structural design of the battery, and the like may affect the charge and discharge parameters of the battery. For example, the charge and discharge parameters of a battery made by a winding process may be different from the charge and discharge parameters of a battery made by a lamination process. The location of the tab at the head or center of the pole piece can result in different charge and discharge properties. The thickness of the materials of the pole piece, the electrolyte, the diaphragm, the pole ear and the like can also influence the charge and discharge performance of the battery.

1402, comparing the charge and discharge parameters of the replaced battery with those of the battery before replacement to obtain a comparison result.

If the charge and discharge parameters of the battery after replacement are the same as or similar to those of the battery before replacement, the battery after replacement can replace the battery before replacement relatively excellently. If the charge-discharge parameters of the battery after replacement and the charge-discharge parameters of the battery before replacement are greatly different, the battery after replacement may not be suitable for being used as a power supply of the electronic equipment.

1403, in case the comparison result is true, the replaced battery is normally used.

For example, the electronic device may control the charging circuit and the discharging circuit of the battery to conduct.

If the comparison result is no, 1404, the charging circuit and the discharging circuit of the battery after replacement are disconnected.

When the charging circuit of the battery is cut off, the electric signal from the charging interface is not conducted to the battery. When the discharge circuit of the battery is cut off, the electrical signal from the battery is not conducted to other electronic devices within the electronic apparatus. Therefore, the power utilization safety of the electronic equipment is improved.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (25)

1. An electronic device, characterized in that the electronic device comprises:

an electric core;

the battery cell is accommodated in a first cavity formed by the middle frame, the middle frame comprises a main body part and a cover plate part which are assembled with each other, and under the condition that the assembly relation of the main body part and the cover plate part is released, the first cavity forms an opening which is used for moving the battery cell out of the first cavity;

the circuit board assembly is accommodated in a second cavity formed by the middle frame, the circuit board assembly comprises a battery cell protection circuit and a power management element, and the battery cell protection circuit is electrically connected with the power management element through a circuit on the circuit board assembly;

the first circuit board is electrically connected between the battery cell protection circuit and the battery cell, and the external pin of the battery cell is abutted to the first circuit board.

2. The electronic device of claim 1, wherein the first circuit board extends from the first cavity to the second cavity.

3. The electronic device according to claim 1 or 2, wherein the middle frame has a first inner side surface, the first inner side surface is a surface of the middle frame forming the first cavity, and the first circuit board is attached to the first inner side surface or the cover plate portion.

4. The electronic device according to any one of claims 1 to 3, wherein a conductive spring piece is arranged on the first circuit board, and the conductive spring piece abuts against an external pin of the battery cell; alternatively, the first and second electrodes may be,

the external pin of electric core is the elasticity pin, elasticity pin butt is in on the first circuit board.

5. The electronic device according to any one of claims 1 to 4, wherein a charging interface is provided on the middle frame, and the power management element is electrically connected between the cell protection circuit and the charging interface.

6. The electronic device of claim 5, wherein the first circuit board comprises a first line and a second line, the first line being electrically connected between the charging interface and the power management element, and the second line being electrically connected between the cell protection circuit and the cell.

7. The electronic device of claim 5, further comprising a second circuit board electrically connected between the charging interface and the power management element.

8. The electronic device of claim 5, wherein the charging interface is disposed on the cover portion, the charging interface being electrically connected to the power management element via a trace on the cover portion, a trace on the body portion, and an electrical connector electrically connected between the body portion and the circuit board assembly.

9. The electronic device according to any one of claims 1 to 8, wherein the hard casing of the battery cell comprises a casing extension portion, the casing extension portion extends outwards from a body of the hard casing, and a guide rail matched with the casing extension portion is arranged on an inner side surface of the middle frame, where the first cavity is formed.

10. The electronic device of any of claims 1-9, further comprising an elastic component,

the elastic component is abutted between the cover plate part and the battery core, or,

the elastic component abuts against a second inner side face and the battery core, and the second inner side face is the surface of the middle frame, which forms the first cavity and is farthest away from the cover plate part.

11. The electronic device of any of claims 1-10, further comprising a resilient electrical connector abutting and electrically connected between the midframe and the rigid casing of the cell.

12. The electronic apparatus according to any one of claims 1 to 11, wherein one end of the cover portion is connected to the main body portion by a rotation shaft, and the cover portion is rotated with respect to the rotation shaft with an assembled relationship of the main body portion and the cover portion released.

13. The electronic device of any of claims 1-12, wherein the cover portion is located at a head, a tail, or a side of the electronic device.

14. An electronic device, characterized in that the electronic device comprises:

the battery comprises a battery core and a battery core protection circuit, and a hard shell of the battery comprises a shell extension part which extends outwards from a body of the hard shell;

the battery is accommodated in a first cavity formed by the middle frame, a guide rail matched with the shell extension part is arranged on the inner side surface of the middle frame forming the first cavity, the middle frame comprises a main body part and a cover plate part which are assembled with each other, and the first cavity forms an opening used for moving the battery out of the first cavity under the condition that the assembly relation of the main body part and the cover plate part is released;

the circuit board assembly is accommodated in a second cavity formed by the middle frame and comprises a power management element;

the first circuit board is electrically connected between the circuit board assembly and the battery, an external pin of the battery is abutted against the first circuit board, and the power management element is electrically connected with the battery through the first circuit board.

15. The electronic device of claim 14, wherein a conductive spring is disposed on the first circuit board, and the conductive spring abuts against an external pin of the battery cell; alternatively, the first and second electrodes may be,

the external pin of electric core is the elasticity pin, elasticity pin butt is in on the first circuit board.

16. The electronic device of claim 14 or 15, wherein the first circuit board extends from the first cavity to the second cavity.

17. The electronic device according to any one of claims 14 to 16, wherein the middle frame has a first inner side surface, the first inner side surface is a surface of the middle frame forming the first cavity, and the first circuit board is attached to the first inner side surface or the cover plate portion.

18. The electronic device according to any one of claims 14 to 17, wherein a charging interface is provided on the middle frame, and the power management element is electrically connected between the cell protection circuit and the charging interface.

19. The electronic device of claim 18, wherein the first circuit board comprises a first line and a second line, the first line electrically connected between the charging interface and the power management element, the second line electrically connected between the power management element and the battery.

20. The electronic device of claim 18, further comprising a second circuit board electrically connected between the charging interface and the power management element.

21. The electronic device of claim 18, wherein the charging interface is disposed on the cover portion, the charging interface being electrically connected to the power management element via a trace on the cover portion, a trace on the body portion, and an electrical connector electrically connected between the body portion and the circuit board assembly.

22. The electronic device of any of claims 14-21, further comprising an elastic component,

the elastic member abuts between the lid portion and the battery, or,

the elastic part is abutted between a second inner side face and the battery, and the second inner side face is a surface of the middle frame, which forms the first cavity and is farthest away from the cover plate part.

23. The electronic device of any of claims 14-22, further comprising a resilient electrical connector abutting and electrically connected between the bezel and the rigid housing of the battery.

24. The electronic apparatus according to any one of claims 14 to 23, wherein one end of the cover portion is connected to the main body portion by a rotation shaft, and the cover portion is rotated relative to the rotation shaft with an assembled relationship of the main body portion and the cover portion released.

25. The electronic device of any of claims 14-24, wherein the cover portion is located at a head, a tail, or a side of the electronic device.

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