Electronic device

Abstract

The embodiment of the utility model provides electronic equipment, and relates to the technical field of batteries. The electronic equipment comprises the battery cell main body and the battery cell shell, the battery cell shell comprises the shell main body and the cover body, the shell main body is connected with the cover body, the closed cavity is defined by the shell main body and the cover body, the battery cell main body is contained in the closed cavity, and the cover body can be matched with the equipment main body of the electronic equipment, so that the electronic equipment does not need to be additionally provided with a rear cover; and the saved space is used for increasing the space of the closed cavity, so that the capacity of the battery can be increased, and the standby time of the electronic equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an electronic device. Background Technology

[0002] With the advancement of technology and the advent of the smart technology wave, thinner and lighter mobile phones are becoming increasingly popular. As mobile phones become thinner, the demand for thinner batteries also increases.

[0003] In related technologies, a mobile phone includes a main body, a steel-cased battery, and a back cover. The main body has a battery compartment, inside which the steel-cased battery is installed. The back cover is connected to the main body.

[0004] However, the low capacity of the steel-cased battery results in a short standby time for the phone. Utility Model Content

[0005] This invention provides an electronic device to solve the problem of low battery capacity in steel-cased batteries, which results in short standby time for mobile phones.

[0006] This utility model provides an electronic device, including a device body and a battery;

[0007] The battery includes a cell structure, the cell structure comprising:

[0008] Battery cell body;

[0009] A battery cell housing, comprising a main body and a cover, wherein the main body and the cover are connected, and the main body and the cover form a closed cavity, and the main body of the battery cell is housed in the closed cavity;

[0010] The main body of the device is provided with a battery compartment, in which the battery is installed. The cover of the battery cell structure is detachably connected to the main body of the device.

[0011] In one possible implementation, the cover includes a cover body and a recessed portion, the recessed portion being located on one side of the cover body in the thickness direction of the cell structure, the recessed portion being provided with a receiving cavity, and the cover body closing the receiving cavity.

[0012] In one possible implementation, in the thickness direction of the cell structure, the side of the cover body away from the pit and the side of the shell body away from the pit are both located within a first surface, and an insulating film is provided on the first surface.

[0013] In one possible implementation, the opening edge of the cover body is welded to the shell body, and a sealant is provided between the opening edge of the cover body and the shell body.

[0014] In one possible implementation, the cover body has a first chamfer on both sides of the width direction of the battery cell structure, and a second chamfer on both sides of the length direction of the battery cell structure.

[0015] In one possible implementation, the first chamfer is a first circular arc chamfer, the radius of which is greater than or equal to 0.5 mm and less than or equal to 10 mm; and / or,

[0016] The second chamfer is a second circular arc chamfer, and the radius of the second circular arc chamfer is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0017] In one possible implementation, in the width direction of the cell structure, the distance between the first rounded chamfer and the opening is greater than or equal to 2 mm and less than or equal to 10 mm.

[0018] In one possible implementation, the thickness of the protrusion in the thickness direction of the cell structure is less than the thickness of the battery compartment of the main body of the electronic device.

[0019] In one possible implementation, the difference between the thickness of the battery compartment and the thickness of the protrusion is greater than or equal to 0.2 mm and less than or equal to 1.5 mm.

[0020] In one possible implementation, in the thickness direction of the cell structure, the ratio of the projected area of ​​the protrusion to the projected area of ​​the cover body is greater than or equal to 3 / 7 and less than or equal to 3 / 2.

[0021] In one possible implementation, the cover body is provided with a locking structure on the side of the battery cell structure in the length and / or width direction, and the locking structure is locked to the device body of the electronic device.

[0022] This utility model provides an electronic device, which includes a battery cell housing comprising a main body and a cover. The main body and the cover are connected and form a closed cavity. The battery cell is housed in the closed cavity. The cover can be matched with the main body of the electronic device, so that the electronic device does not need to be equipped with an additional back cover. The space saved can be used to increase the space of the closed cavity, thereby increasing the battery capacity and extending the standby time of the electronic device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A first-view schematic diagram of a battery cell structure provided for an embodiment of this utility model;

[0025] Figure 2 for Figure 1 A shading model diagram of the battery cell structure in the image;

[0026] Figure 3 for Figure 1 A second-view schematic diagram of the cell structure in the image;

[0027] Figure 4 for Figure 3 A shading model diagram of the battery cell structure in the image;

[0028] Figure 5 for Figure 1 A schematic diagram of the structure of the cover;

[0029] Figure 6 for Figure 5 A schematic diagram of the shaded model of the cover in the middle;

[0030] Figure 7 This is a schematic diagram of an electronic device provided in an embodiment of the present utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100 - Cell structure; 10 - Cell casing;

[0033] 11-Shell body; 12-Cap body;

[0034] 121 - Cover body; 121a - First chamfer;

[0035] 121b - Second chamfer; 1211 - Opening;

[0036] 1212 - Engagement structure; 122 - Raised pit;

[0037] 1221 - Receiving cavity; 101 - First surface;

[0038] 20 - Sealant; 200 - Main body of equipment;

[0039] 201-Battery compartment. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] In the above description, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] As described in the background section, steel-cased batteries have low capacity, resulting in short standby times for mobile phones. The inventors discovered that this problem arises because the battery casing and back cover are separate components, each occupying space within the phone. This results in a small cavity within the casing, leading to low battery capacity and consequently, short standby time.

[0046] To address the aforementioned issues, this utility model provides an electronic device that replaces the back cover with a battery cell housing, thus enabling the battery cell housing to function as a back cover. This eliminates the need for an additional back cover on the electronic device, allowing the space saved to increase battery capacity and extend the standby time of the electronic device.

[0047] The electronic device provided in the embodiments of this utility model will be described in detail below with reference to specific examples.

[0048] This utility model provides a battery cell structure 100 for use in electronic devices. See also... Figure 1 As shown, the thickness direction of the cell structure 100 is the X-axis direction.

[0049] The cell structure 100 may include a cell body (not shown in the figure). Exemplarily, the cell body may be a wound core formed by winding a positive electrode, a separator, and a negative electrode. Alternatively, the cell body may also be a stacked core formed by stacking multiple positive electrode sheets, multiple separators, and multiple negative electrode sheets.

[0050] See Figure 1 and Figure 2 As shown, the cell structure 100 may include a cell housing 10.

[0051] The cell housing 10 is provided with a closed cavity. Exemplarily, the closed cavity is a closed structure in which the cell body is housed.

[0052] The battery cell housing 10 may include a housing body 11 and a cover 12. Both the housing body 11 and the cover 12 are made of steel. It can be understood that both the housing body 11 and the cover 12 are steel components.

[0053] The shell body 11 is connected to the cover 12. Exemplarily, the shell body 11 and the cover 12 can be welded together.

[0054] The shell body 11 and the cover body 12 form a closed cavity.

[0055] The cover 12 is configured to match the device body 200 of the electronic device; that is, the cover 12 can be placed on the device body 200, and in other words, the cover 12 can serve as the back cover of the device body 200. This configuration eliminates the need for an additional back cover on the electronic device, saving space that can be used to increase the space of the enclosed cavity, thereby increasing the battery capacity and extending the standby time of the electronic device.

[0056] In one possible implementation, see Figure 3 and Figure 4 As shown, the cover 12 may include a cover body 121 and a protrusion portion 122.

[0057] The cover body 121 is used to match the device body 200 of the electronic device, that is, the cover body 121 covers the device body 200.

[0058] The protrusion 122 is located on one side of the cover body 121 in the thickness direction of the cell structure 100. In some examples, the protrusion 122 faces the device body 200 relative to the cover body 121 in the thickness direction of the cell structure 100 (see [reference]). Figure 7 (As shown) protrudes.

[0059] See Figures 3 to 6 As shown, the protrusion 122 is provided with a receiving cavity 1221, and the opening 1211 communicates with the receiving cavity 1221. In some examples, the opening 1211 is located on the side of the cover 12 away from the device body 200.

[0060] The shell body 11 closes the receiving cavity 1221. The structure of the shell body 11 is not specifically limited, as long as it can close the receiving cavity 1221.

[0061] For example, see Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the shell body 11 can be located in the opening 1211, and the shell body 11 closes the opening 1211. This arrangement allows the shell body 11 to close the receiving cavity 1221 of the cover 12, thereby forming a closed cavity.

[0062] In one possible implementation, in the thickness direction of the cell structure 100, the side of the cover body 121 facing away from the protrusion 122 and the side of the shell body 11 facing away from the protrusion 122 are both located on the first surface 101 (see...). Figure 1and Figure 2 (As shown). This design prevents the cover 12 from protruding from the side of the cover body 121 away from the protrusion 122, thereby increasing the aesthetics of the electronic device when the battery cell housing 10 is installed with the device body 200.

[0063] The first surface 101 can be either a plane or a curved surface; no specific restrictions are imposed here.

[0064] An insulating film (not shown in the figure) is provided on the first surface 101. In some examples, the negative electrode tab of the cell body is connected to the cell housing 10, so that the protrusion 122 of the cover 12 of the cell housing 10 is at a negative potential. The cover body 121 is provided with an insulating film and can be at zero potential.

[0065] In one possible implementation, the edge of the opening 1211 of the cover body 121 is welded to the shell body 11, and a sealant 20 is provided between the edge of the opening 1211 of the cover body 121 and the shell body 11 (see...). Figure 1 and Figure 2 (As shown). With this configuration, the sealing performance between the cover body 121 and the shell body 11 can be improved by using sealant 20 between them.

[0066] It should be noted that before welding the edge of the opening 1211 of the cover body 121 to the shell body 11, sealant 20 can be applied to the edge of the opening 1211 of the cover body 121.

[0067] In some examples, the material of sealant 20 can be polypropylene.

[0068] In one possible implementation, the cover body 121 has a first chamfer 121a on both sides of the battery cell structure 100 in the width direction, and a second chamfer 121b on both sides of the cover body 121 in the length direction of the battery cell structure 100.

[0069] The length direction of the cell structure 100 is the Y-axis direction. The width direction of the cell structure 100 is the Z-axis direction.

[0070] In this design, both the first chamfer 121a and the second chamfer 121b can be arc-shaped. In some examples, the first chamfer 121a is a first circular arc chamfer, and the second chamfer 121b is a second circular arc chamfer.

[0071] For example, the radius of the first rounded chamfer is 0.5mm to 10mm, that is, the radius of the first rounded chamfer is greater than or equal to 0.5mm and less than or equal to 10mm. When the radius of the first rounded chamfer is less than 0.5mm, the pressure on the palm and fingers is greater, making the electronic device uncomfortable to hold in the user's hand. When the radius of the first rounded chamfer is greater than 10mm, the structural strength of the edge of the cover body 121 of the electronic device is low, making the cover body 121 prone to deformation when dropped or impacted. When the radius of the first rounded chamfer is greater than or equal to 0.5mm and less than or equal to 10mm, the pressure on the palm and fingers is less, the electronic device is comfortable to hold in the user's hand, and the structural strength of the edge of the cover body 121 of the electronic device is improved, making the cover body 121 less prone to deformation when dropped or impacted.

[0072] The radius of the second chamfer is 0.5mm to 10mm, meaning it is greater than or equal to 0.5mm and less than or equal to 10mm. When the radius of the second chamfer is less than 0.5mm, it results in greater pressure on the palm and fingers, making the electronic device uncomfortable to hold. When the radius of the second chamfer is greater than 10mm, it reduces the structural strength of the edge of the cover body 121, making it prone to deformation upon drop or impact. Conversely, a radius of 0.5mm to 10mm reduces pressure on the palm and fingers, making the electronic device comfortable to hold, and also increases the structural strength of the edge of the cover body 121, preventing deformation upon drop or impact.

[0073] In one possible implementation, the distance L between the first rounded chamfer and the opening 1211 in the width direction of the cell structure 100 (see...) Figure 5 As shown, the distance L between the first rounded chamfer and the opening 1211 in the width direction of the cell structure 100 is 2mm to 10mm, meaning it is greater than or equal to 2mm and less than or equal to 10mm. When the distance L between the first rounded chamfer and the opening 1211 in the width direction of the cell structure 100 is less than 2mm, the sealing area of ​​the opening 1211 will be too close to the first rounded chamfer, affecting the sealing effect. When the distance L between the first rounded chamfer and the opening 1211 in the width direction of the cell structure 100 is greater than 10mm, it will cause energy density waste in the cell structure 100. When the distance L between the first rounded chamfer and the opening 1211 in the width direction of the cell structure 100 is greater than or equal to 2mm and less than or equal to 10mm, the distance between the sealing area of ​​the opening 1211 and the first rounded chamfer can be increased, improving the sealing effect and preventing energy density waste in the cell structure 100.

[0074] In one possible implementation, in the thickness direction of the cell structure 100, the thickness of the protrusion 122 is less than that of the battery compartment 201 of the device body 200 of the electronic device (see...). Figure 7 The thickness is shown in the figure.

[0075] In the thickness direction of the cell structure 100, the difference between the thickness of the battery compartment 201 and the thickness of the protrusion 122 is 0.2mm to 1.5mm. Specifically, in the thickness direction of the cell structure 100, the difference between the thickness of the battery compartment 201 and the thickness of the protrusion 122 is greater than or equal to 0.2mm and less than or equal to 1.5mm. When the difference between the thickness of the battery compartment 201 and the thickness of the protrusion 122 in the thickness direction of the cell structure 100 is less than 0.2mm, it will inhibit battery expansion, posing a safety risk. When the difference between the thickness of the battery compartment 201 and the thickness of the protrusion 122 in the thickness direction of the cell structure 100 is greater than 1.5mm, it will result in wasted space in the battery compartment 201, which is detrimental to the thinning and lightening of electronic devices. When the difference between the thickness of the battery compartment 201 and the thickness of the protrusion 122 in the thickness direction of the cell structure 100 is greater than or equal to 0.2 mm and less than or equal to 1.5 mm, the expansion of the battery will not be suppressed, thus avoiding safety risks and preventing wasted space in the battery compartment 201, which is conducive to the thinning and lightening of electronic devices.

[0076] In one possible implementation, the ratio of the projected area of ​​the protrusion 122 to the projected area of ​​the cover body 121 in the thickness direction of the cell structure 100 is greater than or equal to 3 / 7 and less than or equal to 3 / 2. When the ratio of the projected area of ​​the protrusion 122 to the projected area of ​​the cover body 121 in the thickness direction of the cell structure 100 is less than 3 / 7, the space of the enclosed cavity is small, resulting in a small capacity of the cell structure 100. When the ratio of the projected area of ​​the protrusion 122 to the projected area of ​​the cover body 121 in the thickness direction of the cell structure 100 is greater than 3 / 2, the cell structure 100 occupies space in other components of the electronic device, which is not conducive to the thinning and lightening of the electronic device. When the ratio of the projected area of ​​the protrusion 122 to the projected area of ​​the cover body 121 in the thickness direction of the cell structure 100 is 3 / 7 to 3 / 2, the space of the enclosed cavity can be increased, the capacity of the cell structure 100 can be increased, and the space of other components of the electronic device will not be occupied, which is conducive to the thinning and lightening of the electronic device.

[0077] In one possible implementation, the cover body 121 is provided with an engaging structure 1212 on the side of the cell structure 100 in the length direction and / or width direction (see...). Figure 3 and Figure 4 As shown, the snap-fit ​​structure 1212 is used for snap-fit ​​connection of the device body 200 of the electronic device.

[0078] The engaging structure 1212 can be either a slot or an engaging protrusion.

[0079] The cover body 121 may have an engaging structure 1212 on its side along the length of the cell structure 100. Alternatively, the cover body 121 may have an engaging structure 1212 on its side along the width of the cell structure 100. Alternatively, the cover body 121 may have an engaging structure 1212 on its side along both the length and width of the cell structure 100.

[0080] For example, the main body may also have a locking structure 1212 on two sides in the width direction of the cell structure 100. The locking structure 1212 is a slot, and the device body 200 of the electronic device is provided with a protrusion that cooperates with the slot, so that the cover body 121 is engaged and connected with the protrusion on the device body 200 through the slot.

[0081] In some examples, the fabrication of the cell structure 100 includes the following steps:

[0082] 1. Preparation of positive and negative electrode plates

[0083] A positive electrode active material slurry is prepared by uniformly mixing solvent, binder, conductive agent, and positive electrode active material in a certain proportion. A negative electrode active material slurry is prepared by uniformly mixing solvent, binder, conductive agent, and negative electrode active material in a certain proportion.

[0084] It should be noted that the positive electrode active material includes at least one of lithium cobalt oxide, ternary materials, lithium iron phosphate, lithium manganese iron phosphate, and lithium-rich manganese-based materials. Ternary materials include nickel-cobalt-manganese or nickel-cobalt-aluminum. The negative electrode active material includes at least one of graphite, hard carbon, silicon-oxygen materials, and silicon-carbon.

[0085] The positive electrode active material slurry is coated onto the positive electrode current collector, and after drying, rolling, and slitting, a positive electrode sheet is obtained. The negative electrode active material slurry is coated onto the negative electrode current collector, and after drying, rolling, and slitting, a negative electrode sheet is obtained.

[0086] A tab is soldered onto both the positive and negative electrode plates. Adhesive tape is applied to the surface of the tabs to prevent soldering burrs from causing short circuits in the cell structure.

[0087] 2. Cell body preparation

[0088] The main body of the battery cell can be a wound core formed by winding a positive electrode, a separator, and a negative electrode. Alternatively, the main body of the battery cell can also be a stacked core formed by stacking multiple positive electrode plates, multiple separators, and multiple negative electrode plates.

[0089] 3. Preparation of cell casing 10

[0090] A steel film is stamped to the size of the battery cell body to form a receiving cavity 1221, and the non-required parts of the steel film are removed using laser equipment or hardware molds to form a cover 12.

[0091] The other steel film is used to remove the undesirable parts using laser equipment or metal molds to form the shell body 11.

[0092] It should be noted that the shell body 11 and the cover 12 can be inspected using a vision system. The vision system is equipped with a camera and a light source to capture images of the shell body 11 and the cover 12; the vision system is also equipped with image processing software to identify and analyze defects (such as burrs on the surface of the shell body 11 and the cover 12).

[0093] 4. Cell structure 100 fabrication

[0094] The battery cell body is placed in the receiving cavity 1221 of the cover 12, the edge of the opening 1211 of the cover 12 is coated with glue, and the cover 12 is welded to the shell body 11 to close the receiving cavity 1221, thus forming the battery cell structure 100.

[0095] This utility model provides a battery, including a cell structure 100.

[0096] The battery can be a lithium-ion battery or a sodium-ion battery.

[0097] The cell structure 100 in this embodiment has the same structure as the cell structure 100 provided in any of the above embodiments, and can bring the same or similar technical effects. It will not be described in detail here. For details, please refer to the description of the above embodiments.

[0098] This utility model embodiment provides an electronic device, including a device body 200 and a battery. The device body 200 is provided with a battery compartment 201, and the battery is installed in the battery compartment 201. The cover 12 of the battery cell structure 100 is detachably connected to the device body 200.

[0099] The battery in this embodiment has the same structure as the battery provided in any of the above embodiments and can bring the same or similar technical effects. It will not be described in detail here. For details, please refer to the description of the above embodiments.

[0100] In some examples, the electronic device can be a mobile phone.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electronic device, characterized in that, Includes the main body of the device (200) and the battery; The battery includes a cell structure (100), the cell structure (100) comprising: Battery cell body; The battery cell housing (10) includes a main body (11) and a cover (12). The main body (11) is connected to the cover (12). The main body (11) and the cover (12) form a closed cavity, and the main body of the battery cell is housed in the closed cavity. The main body (200) of the device is provided with a battery compartment (201), the battery is installed in the battery compartment (201), and the cover (12) of the battery cell structure (100) is detachably connected to the main body (200).

2. The electronic device according to claim 1, characterized in that, The cover (12) includes a cover body (121) and a protrusion (122). The protrusion (122) is located on one side of the cover body (121) in the thickness direction of the cell structure (100). The protrusion (122) is provided with a receiving cavity (1221). The shell body (11) closes the receiving cavity (1221).

3. The electronic device according to claim 2, characterized in that, In the thickness direction of the cell structure (100), the side of the cover body (121) facing away from the protrusion (122) and the side of the shell body (11) facing away from the protrusion (122) are both located in the first surface (101), and an insulating film is provided on the first surface (101).

4. The electronic device according to claim 2, characterized in that, The edge of the opening (1211) of the cover body (121) is welded to the shell body (11), and a sealant (20) is provided between the edge of the opening (1211) of the cover body (121) and the shell body (11).

5. The electronic device according to claim 2, characterized in that, The cover body (121) has a first chamfer (121a) on both sides of the width direction of the cell structure (100), and the cover body (121) has a second chamfer (121b) on both sides of the length direction of the cell structure (100).

6. The electronic device according to claim 5, characterized in that, The first chamfer (121a) is a first circular arc chamfer, the radius of which is greater than or equal to 0.5 mm and less than or equal to 10 mm; and / or, The second chamfer (121b) is a second circular arc chamfer, the radius of which is greater than or equal to 0.5 mm and less than or equal to 10 mm.

7. The electronic device according to claim 6, characterized in that, In the width direction of the cell structure (100), the distance between the first rounded chamfer and the opening (1211) is greater than or equal to 2 mm and less than or equal to 10 mm.

8. The electronic device according to claim 2, characterized in that, In the thickness direction of the cell structure (100), the thickness of the protrusion (122) is less than the thickness of the battery compartment (201) of the device body (200) of the electronic device.

9. The electronic device according to claim 8, characterized in that, In the thickness direction of the cell structure (100), the difference between the thickness of the battery compartment (201) and the thickness of the protrusion (122) is greater than or equal to 0.2 mm and less than or equal to 1.5 mm.

10. The electronic device according to claim 2, characterized in that, In the thickness direction of the cell structure (100), the ratio of the projected area of ​​the protrusion (122) to the projected area of ​​the cover body (121) is greater than or equal to 3 / 7 and less than or equal to 3 / 2.

11. The electronic device according to claim 2, characterized in that, The cover body (121) is provided with a locking structure (1212) on the side of the cell structure (100) in the length direction and / or width direction, and the locking structure (1212) is locked and connected to the device body (200) of the electronic device.

Images