Battery assembly and electric device

Abstract

The utility model relates to the technical field of batteries, in particular to a battery assembly and an electric device. The battery assembly comprises a battery and a protective film; the protective film wraps the battery and is bonded with the battery, the protective film comprises a main body part and a lifting part, the main body part covers the bottom surface and the side surface of the battery, and the lifting part is connected to the main body part and covers the top surface of the battery; a tearing structure is arranged at the edge of the lifting part, a tearing guide structure is arranged on the main body part, and the tearing guide structure and the tearing structure are arranged at intervals; and the tearing structure and the tearing guide structure are constructed in a way that when the lifting part is subjected to lifting force, the tearing structure cracks and is communicated with the tearing guide structure. The problem of low battery replacement efficiency in related technologies can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular to a battery assembly and an electrical device. Background Art

[0002] With the rapid development of battery technology, higher requirements are put forward for the energy density, fast charging ability, and charge-discharge rate of batteries in electronic products. The built-in battery design can greatly save the body volume and make electronic products thinner.

[0003] Generally, the fixing method of the built-in battery is as follows: The battery is wrapped with a battery protection film and bonded to the battery, and then the battery protection film is bonded in the battery compartment of the electrical device. When the battery needs to be replaced, the battery protection film can be lifted to separate the battery from the battery protection film, so as to replace the battery.

[0004] However, the current battery protection film is tightly bonded to the battery, making it difficult to separate the two, which brings inconvenience to battery replacement and affects the efficiency of battery replacement. Utility Model Content

[0005] The present application provides a battery assembly and an electrical device to solve the problem of low battery replacement efficiency in related technologies.

[0006] On the one hand, the present application provides a battery assembly, including a battery and a protection film;

[0007] The protection film wraps the battery and is bonded to the battery. The protection film includes a main body portion and a lifting portion. The main body portion covers the bottom surface and the side surface of the battery, and the lifting portion is connected to the main body portion and covers the top surface of the battery;

[0008] A tearing structure is provided at the edge of the lifting portion, and a tearing guiding structure is provided on the main body portion. The tearing guiding structure and the tearing structure are spaced apart;

[0009] The tearing structure and the tearing guiding structure are configured such that when the lifting portion is subjected to a pulling force, the tearing structure cracks and communicates with the tearing guiding structure.

[0010] In some embodiments, the tearing guiding structure is located at the bottom surface of the battery; the tearing structure includes a tearing opening. The first end of the tearing opening is located at the edge of the lifting portion, and the second end of the tearing opening extends toward the tearing guiding structure.

[0011] In some embodiments, the tearing opening is located between the edge of the lifting portion and the edge of the main body portion; there are two tearing openings, and the two tearing openings are respectively provided on opposite sides of the lifting portion.

[0012] In some embodiments, the tearing guiding structure includes a tearing line. The tearing line is provided on the main body portion. The tearing line has a first end and a second end, and the first end and the second end of the tearing line are respectively spaced apart from the tearing opening.

[0013] In some embodiments, the structural strength of the main body at the tear line is less than that of the main body outside the tear line.

[0014] In some embodiments, the tear line includes a first tear line which is curved, and both ends of the first tear line point to the tear opening, and the middle part of the first tear line protrudes outward toward the side away from the lifting part.

[0015] In some embodiments, the tear line further includes a second tear line which is arranged parallel and spaced apart from at least part of the line segment of the first tear line, and the second tear line is located on the side of the first tear line close to the edge of the protective film, and the interval between the first tear line and the second tear line is greater than or equal to 0.5 mm.

[0016] In some embodiments, the first tear line includes two parallel segments and a curved segment connecting between the two parallel segments. The first ends of the two parallel segments are connected to the opposite ends of the curved segment, and the second ends of the parallel segments both extend toward the lifting part. The second tear line and the parallel segments are parallel and spaced apart from each other.

[0017] In some embodiments, both the first tear line and the second tear line are at least partially composed of virtual tangent lines. Among them, the virtual tangent lines include alternately arranged vacant segments and connecting segments, and the connecting segments in the first tear line and the second tear line are arranged in a staggered manner.

[0018] In some embodiments, the battery protective film further includes a crack stopping structure which is arranged on the side of the tear opening away from the lifting part. The crack stopping structure includes a crack stopping opening which is communicated with the tear guiding structure and is spaced apart from the tearing structure.

[0019] In some embodiments, the protective film further includes a crack stopping structure which is arranged on the side of the tear opening away from the lifting part.

[0020] In some embodiments, the crack stopping structure includes a crack stopping opening. There is a distance between the crack stopping opening and the tear opening, and the crack stopping opening and the tear opening are spaced apart from each other.

[0021] In some embodiments, the gluing area includes a first gluing area and a second gluing area. The bonding strength of the second gluing area is greater than that of the first gluing area. The second gluing area includes a first area and a second area. The first area is located at the first edge of the main body close to the lifting part, and the second area is located at the second edge of the main body away from the lifting part. The first gluing area is located between the first area and the second area.

[0022] In some embodiments, the first gluing area extends to the lifting part and covers part of the lifting part. There is a first gluing area between the two tear openings; there are two crack stopping openings, and the gluing area further includes a non-gluing area which is arranged between the two crack stopping openings.

[0023] In some embodiments, the sizing area is distributed on the main body part and extends to a part of the lifting part. The tearing line has a first end and a second end. The sizing area further includes a non-adhesive area, and the non-adhesive area is arranged between the first end and the second end of the tearing line.

[0024] In a second aspect, the present application provides an electrical device, including a battery compartment, an adhesive layer, and the above-mentioned battery assembly. The second surface of the protective film in the battery assembly is adhesively bonded to the inside of the battery compartment through the adhesive layer.

[0025] The battery assembly provided by the present application includes a protective film and a battery. The protective film includes a main body part and a lifting part. The main body part can wrap the battery and be adhesively connected to the battery to play a role in protecting the battery. The lifting part is connected to the side of the main body part and can cover the top surface of the battery. Specifically, the middle part of the main body part is adhesively bonded to the surface of the battery close to the battery compartment, and the main body part can be bent along the two edges of the battery, wrap the battery, and be pasted on the surface of the battery far from the battery compartment, thereby realizing the fixation of the protective film and the battery. A tearing structure is provided at the edge of the lifting part, and a tearing guiding structure is provided between the main body part and the lifting part. The tearing structure makes it easier for the lifting part to be separated from the main body part, and the tearing guiding structure enables the lifting part to be separated from the main body part along a predetermined path. The tearing guiding structure and the tearing structure are arranged at intervals. Due to the interval between the two, when an operator pulls the lifting part, the pulling force is transmitted along with the lifting part to the edge of the main body part, so that the part of the main body part adhesively bonded to the upper surface of the battery is lifted from the upper surface of the battery together with the lifting part, so that the operator does not need to manually pick open the main body part adhesively bonded to the upper surface of the battery, improving the battery replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0027] Figure 1 It is an exploded view of a part of the structure of the electrical device provided by the embodiment of the present application;

[0028] Figure 2 It is an assembly schematic diagram of a part of the structure of the electrical device provided by the embodiment of the present application;

[0029] Figure 3 It is a disassembled structure schematic diagram of a part of the structure of the electrical device provided by the embodiment of the present application;

[0030] Figure 4 It is a structure schematic diagram of the battery assembly provided by the embodiment of the present application, wherein, Figure 4 shows the state before the tearing structure is torn;

[0031] Figure 5Schematic structural diagram of the battery assembly provided by the embodiment of the present application, where Figure 5 shows the state after the tearing structure is torn;

[0032] Figure 6 Schematic structural diagram of the protective film of the battery assembly provided by an embodiment of the present application;

[0033] Figure 7 is Figure 6 schematic structural diagram of the first surface of the protective film;

[0034] Figure 8 Schematic structural diagram of the battery protective film of the battery assembly provided by an embodiment of the present application;

[0035] Figure 9 is Figure 8 schematic structural diagram of the first surface of the protective film;

[0036] Figure 10 Schematic structural diagram of the protective film of the battery assembly provided by an embodiment of the present application;

[0037] Figure 11 is Figure 10 schematic structural diagram of the first surface of the protective film.

[0038] Explanation of reference numerals:

[0039] 20, battery assembly; 30, electrical device;

[0040] 100, protective film; 101, first surface; 110, main body; 120, lifting part; 130, gluing area; 131, first glue area; 132, second glue area; 1321, first area; 1322, second area; 140, glue-free area;

[0041] 200, tearing structure;

[0042] 300, tearing guide structure; 310, first tearing line; 311, parallel segment; 312, bending segment; 320, second tearing line;

[0043] 400, stop crack;

[0044] 500, battery;

[0045] 600, battery compartment;

[0046] 700, adhesive layer. Detailed implementation manners

[0047] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] Nowadays, more and more electronic products use non-removable battery structures, that is, the battery is fixed inside the phone, and users generally cannot touch the battery. The battery can only be removed during maintenance. The built-in battery design can greatly save the body volume and make electronic products thinner.

[0049] However, the installation and disassembly of built-in batteries face many problems, such as inconvenient disassembly and complicated assembly procedures. In order to facilitate battery replacement, the structure of the battery protective film has been improved in the relevant technology. The current battery protective film generally includes a main body and a lifting part connected to the main body. The first surface of the main body wraps the battery and is bonded to the battery. The second surface of the main body is bonded to the battery compartment of the electrical device, thereby fixing the battery to the battery compartment to prevent the battery from moving in the battery compartment. The lifting part is connected to the main body to provide the operator with a grip to pull the battery when replacing the battery. A tearing guide structure is provided between the lifting part and the main body. The tearing guide structure is constructed so that when the lifting part is subjected to a pulling force, the lifting part is separated from the main body along the tearing guide structure, so that the operator can remove the battery from the battery protective film by pulling the lifting part, thereby replacing it.

[0050] Specifically, the main body includes a first edge close to the lifting portion and a second edge away from the lifting portion. When the main body is bonded to the battery, the first edge and the second edge of the main body wrap around the side edges of the battery and bend toward the top surface of the battery and finally stick to the top surface of the battery. At the same time, part of the middle area of ​​the main body can also be bonded to the bottom surface of the battery, so that the battery protective film is tightly connected to the battery.

[0051] The lifting part is connected to the first edge of the main body. After the first edge is bonded to the top surface of the battery, the lifting part can also be attached to the top surface of the battery along with the first edge. The lifting part is only partially provided with adhesive, and the free end of the lifting part is separable from the upper surface of the battery. When the operator replaces the battery, the free end of the lifting part can be uncovered and the lifting part can be pulled. The lifting part is separated from the main body along the tearing guide structure, thereby separating the battery from the main body and removing the battery.

[0052] However, in the above process, although the lifting part can be separated from the top surface of the battery, the first edge of the main body part often remains adhered to the top surface of the battery, making it difficult for the battery to be separated from the main body. In actual operation, the operator often needs to manually pick open the first edge adhered to the upper surface of the battery, which greatly affects the battery replacement efficiency. In addition, since the outer film of the battery is relatively thin, this process is also likely to cause damage to the outer film of the battery, making it difficult for the battery to be reused.

[0053] In view of this, the present application provides a battery protection film, a tearing structure is provided at the edge of the lifting part, a tearing guiding structure is provided in the transition area between the main body part and the lifting part, and the tearing structure and the tearing guiding structure are arranged at intervals. Since there is an interval between the two, when the operator pulls the lifting part, the pulling force is transmitted along the lifting part to the edge of the main body part, so that the part of the main body part adhered to the upper surface of the battery is lifted from the upper surface of the battery together with the lifting part, enabling the operator to not need to manually pick open the main body part adhered to the upper surface of the battery, thus improving the battery replacement efficiency.

[0054] The following describes the battery provided by the embodiments of the present application with reference to the accompanying drawings. It should be noted that the battery provided by the embodiments of the present application can be a secondary battery, that is, the battery in the embodiments of the present application can be charged, discharged and recycled. The specific type of the battery can include but is not limited to lithium batteries, etc. The scenarios where the battery can be used include but are not limited to power-consuming devices such as electronic products and flying tools, such as mobile communication devices, drones, etc. The embodiments of the present application do not make specific limitations on this.

[0055] Figure 1 is an exploded view of a part of the structure of the power-consuming device provided by the embodiment of the present application;

[0056] Figure 2 is an assembly schematic diagram of a part of the structure of the power-consuming device provided by the embodiment of the present application; Figure 3 is a disassembled structure schematic diagram of a part of the structure of the power-consuming device provided by the embodiment of the present application; Figure 4 is a structure schematic diagram of the battery assembly provided by the embodiment of the present application, wherein, Figure 4 shows the state before the tearing structure is torn; Figure 5 is a structure schematic diagram of the battery assembly provided by the embodiment of the present application, wherein, Figure 5 shows the state after the tearing structure is torn; Figure 6 is a structure schematic diagram of the battery protection film provided by an embodiment of the present application; Figure 7 is Figure 6 a structure schematic diagram of the first surface 101 of the battery protection film.

[0057] As Figures 1 to 7 shown, the present embodiment provides a battery assembly, including a battery and a protection film.

[0058] The protective film wraps around the battery and is adhered to the battery. The protective film includes a main body portion and a lifting portion. The main body portion covers the bottom surface and the side surface of the battery, and the lifting portion is connected to the main body portion and covers the top surface of the battery;

[0059] A tearing structure is provided at the edge of the lifting portion, and a tearing guiding structure is provided on the main body portion. The tearing guiding structure and the tearing structure are spaced apart;

[0060] The tearing structure and the tearing guiding structure are configured such that when a pulling force is applied to the lifting portion, the tearing structure splits and communicates with the tearing guiding structure.

[0061] Applying the technical solution of this embodiment, the protective film 100 includes a main body portion 110 and a lifting portion 120. The main body portion 110 can wrap around the battery and be adhesively connected to the battery to protect the battery. The lifting portion 120 is connected to the side of the main body portion 110 and can cover the top surface of the battery. Specifically, the middle part of the main body portion 110 is adhesively connected to the surface (the bottom surface of the battery) of the battery 500 close to the battery compartment 600 by adhesion, and the main body portion can be bent along the two edges of the battery 500 to wrap the battery 500 and be pasted on the surface (the top surface of the battery) of the battery 500 away from the battery compartment 600, thereby realizing the fixation of the protective film 100 to the battery 500. A tearing structure 200 is provided at the edge of the lifting portion 120, and a tearing guiding structure 300 is provided between the main body portion 110 and the lifting portion 120. The tearing structure 200 makes it easier for the lifting portion 120 to separate from the main body portion 110, and the tearing guiding structure 300 enables the lifting portion 120 to separate from the main body portion 110 along a predetermined path. The tearing guiding structure 300 and the tearing structure 200 are spaced apart. Due to the space between the two, when the operator pulls the lifting portion 120, the pulling force is transmitted along the lifting portion 120 to the edge of the main body portion 110, causing the part of the main body portion 110 adhered to the upper surface of the battery 500 to be lifted from the upper surface of the battery together with the lifting portion 120, so that the operator does not need to manually pick open the main body portion adhered to the upper surface of the battery, improving the battery replacement efficiency.

[0062] Specifically, as Figures 2 to 5 shown, in some embodiments, the tearing guiding structure 300 is located at the bottom surface of the battery. The tearing structure 200 includes a tearing opening. The first end of the tearing opening is located at the edge of the lifting portion 120, and the second end of the tearing opening extends towards the tearing guiding structure 300.

[0063] In the above structure, due to the presence of the tear opening, the lifting part 120 is more likely to be separated from the main body part 110. The second end of the tear opening faces the tear guiding structure 300, so that the tear opening tears towards the tear guiding structure 300 until the crack communicates with the tear guiding structure 300. The pulling force drives the lifting part 120 to break along the tear guiding structure 300, so that the lifting part 120 is completely separated from the main body part 110.

[0064] Further, as Figure 6 and Figure 7 shown, in some embodiments, the tear opening is in the shape of a slit or a notch, and such a shape of the tear opening is easy to process.

[0065] As Figure 6 and Figure 7 shown, in some embodiments, the tear opening is located between the edge of the lifting part 120 and the edge of the main body part 110. This setting method is beneficial to ensuring the integrity of the lifting part 120, thereby ensuring the pulling area of the operator.

[0066] As Figure 6 and Figure 7 shown, in some embodiments, there are two tear openings, and the two tear openings are respectively arranged on the opposite sides of the lifting part 120, so as to ensure the integrity of the lifting part 120 when the lifting part 120 is separated from the main body part 110.

[0067] As Figure 6 and Figure 7 shown, in some embodiments, the tear guiding structure 300 further includes a tear line for the lifting part 120 and the main body part 110 to be separated from each other at the tear line under the action of the pulling force. Specifically, the tear line is arranged on the main body part 110, the tear line has a first end and a second end, and the first end and the second end of the tear line are respectively arranged at intervals from the tear opening.

[0068] In the above structure, the structure of the tear line is simple and easy to process. The tear line can regulate the separation path of the lifting part 120 and the main body part 110, so as to play a guiding role in the tearing of the lifting part 120.

[0069] It should be noted that the structural strength of the main body part 110 at the tear line is less than the structural strength of the main body part 110 outside the tear line for the lifting part 120 and the main body part 110 to be separated from each other at the tear line. Specifically, the tear opening is arranged towards the tear line. Under the action of the pulling force, the tear opening cracks, the crack extends to the tear line, and the lifting part 120 breaks along the tear line, so that the lifting part 120 is completely separated from the main body part 110.

[0070] Specifically, as Figure 6 and Figure 7As shown, in some embodiments, the tear line includes a first tear line 310, the first tear line 310 is curved, and both ends of the first tear line 310 point to the tearing hole, so that the lifting portion 120 can be split along the tearing hole and smoothly extend to both ends of the first tear line 310, and the middle part of the first tear line 310 protrudes toward the side away from the lifting portion 120, forming a path for separating the lifting portion 120 from the main body 110.

[0071] Specifically, the first tear line 310 includes two parallel sections 311 and a curved section 312 connected between the two parallel sections 311, the first ends of the two parallel sections 311 are connected to the opposite ends of the curved section 312, the second ends of the parallel sections 311 extend toward the lifting portion 120, and the two tear openings extend beyond the second ends of the parallel sections 311, so that when the lifting portion is torn, the crack can smoothly transition from the tear opening to the first tear line 310.

[0072] like Figure 6 and Figure 7 As shown, in some embodiments, the protective film 100 also includes a crack stopping structure, which is arranged on the side of the tearing opening away from the lifting portion 120, and the crack stopping structure includes a crack stopping opening 400, which is connected to the tearing guide structure 300 and is spaced apart from the tearing structure 200.

[0073] In the above structure, the crack-stopping structure can prevent the lifting portion 120 from being damaged by the tear seam when the lifting portion 120 is pulled, causing the lifting portion 120 to fall off from the main body 110 before the battery 500 is taken away from the main body 110.

[0074] Specifically, when the lifting part 120 is pulled, the lifting part 120 is opened by the pulling force, and the first edge of the main body 110 is peeled off from the upper surface of the battery 500. At the same time, a crack is generated at the tearing opening due to the action of the pulling force, and the crack is connected to the crack stopping structure to stop further cracking. At this time, the operator can change the direction of force and lift the lifting part 120 toward the top of the battery 500. Since the crack stopping opening 400 is connected to the tearing guide structure 300, the lifting part 120 can continue to tear along the path regulated by the tearing guide structure 300 until it is separated from the main body 110, driving the battery 500 to be pulled out from the main body 110.

[0075] It should be noted that the tear stop opening 400 and the tearing structure 200 are spaced apart, so that when the operator pulls the lifting part, the pulling force is transmitted along with the lifting part to the edge of the main body part, and the part of the main body part adhered to the upper surface of the battery is lifted from the upper surface of the battery together with the lifting part. The operator does not need to manually pick open the main body part adhered to the upper surface of the battery, which improves the battery replacement efficiency. The minimum distance between the tear stop opening 400 and the tearing structure 200 can be between 1.5 mm and 5 mm. Exemplarily, the numerical value taken for the minimum distance between the tear stop opening 400 and the tearing structure 200 can be 1.5 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc.

[0076] Specifically, the tear stop opening 400 can be a through hole. Exemplarily, the tear stop opening 400 is an arc-shaped hole, and the hole wall of the arc-shaped hole is smooth, with a good crack stopping effect.

[0077] Such as Figure 6 and Figure 7 As shown, in some embodiments, the tear stop opening 400 is provided on the extension line of the tear opening along its own extension direction, so as to ensure that the crack can extend towards the tear stop opening 400 and communicate with the tear stop opening 400.

[0078] Such as Figure 6 and Figure 7 As shown, in some embodiments, the glue application area 130 includes a first glue area 131 and a second glue area 132. The bonding strength of the second glue area 132 is greater than that of the first glue area 131. The second glue area 132 includes a first area 1321 and a second area 1322. The first area 1321 is located at the first edge of the main body part 110 close to the lifting part 120, and the second area 1322 is located at the second edge of the main body part 110 far from the lifting part 120. The first glue area 131 is located between the first area 1321 and the second area 1322.

[0079] In the above structure, within the same area, the bonding strength of the second glue area 132 is greater than that of the first glue area 131. Specifically, the viscosity of the second glue area 132 is between 5 and 25 N / 25 mm, and the viscosity of the first glue area 131 is between 0 and 5 N / 25 mm.

[0080] The second adhesive area 132 includes a first area 1321 and a second area 1322. The first area 1321 is located on one side of the main body 110 close to the lifting portion 120, that is, after the protective film is bonded to the battery 500, the first adhesive area 131 is bonded to the lower surface of the battery 500, the first area 1321 is bent along the first edge of the battery and covers the upper surface of the battery 500, and is bonded to the upper surface of the battery 500, the second area 1322 is bent along the second edge of the battery and covers the upper surface of the battery 500, and can also be bonded to the upper surface of the battery 500, so the first area 1321 and the second area 1322 form a wrapping bond of the main body 110 to the battery 500, thereby ensuring the protection effect on the battery 500 and the connection effect of the battery 500 in the battery compartment.

[0081] like Figure 6 and Figure 7 As shown, in some embodiments, the first region 1321 extends to the lifting portion 120 and covers a portion of the lifting portion 120, and the first region 1321 is provided between the two tearing openings, that is, the first region 1321 extends between the two tearing openings.

[0082] In the above structure, since there is a first area 1321 between the two tearings, the first area 1321 increases the strength of the battery protection film between the two tearings. When the lifting part 120 is pulled, the lifting part 120 is pulled to bring the first edge of the main body 110 away from the upper surface of the battery 500, thereby reducing the probability that the first edge of the main body 110 is still adhered to the upper surface of the battery after the lifting part 120 is opened.

[0083] It should be noted that if Figure 6 and Figure 7 As shown, the crack stop openings include two, and the glue application area 130 also includes a glue-free area 140, which is arranged between the two crack stop openings 400. The glue-free area just corresponds to the side edge of the battery, and when the battery is disassembled, it is easy to pull the battery out of the battery compartment.

[0084] like Figure 4 As shown, in order to ensure the strength of the lifting portion 120 and facilitate the operator to pinch the lifting portion 120 for pulling, the size of the lifting portion 120 in the y direction (the length direction of the battery 500) is at least 8 mm.

[0085] In addition, the distance between the two crack-stopping openings should be smaller than the dimension of the lifting portion 120 in the y direction, so that when the lifting portion 120 is pulled, the crack can smoothly extend from the tearing opening to the crack-stopping opening.

[0086] It should also be noted that although the first glue area 1321 extends to the lifting part 120 and only covers a part of the lifting part 120, a glue-free part still needs to flow out to facilitate the operator to uncover the edge of the lifting part 120 for pulling operations. Specifically, a glue-free area of 0.5 mm to 8 mm should be reserved at the edge of the lifting part 120 to facilitate the operator to uncover the lifting part 120.

[0087] The battery protective film has a film structure and can be made of PI or PET material; the thickness can be between 0.02 and 0.2 mm, and this embodiment does not limit this.

[0088] In addition, Figure 8 FIG. is a schematic structural diagram of a battery protective film provided by an embodiment of the present application; Figure 9 is Figure 8 a schematic structural diagram of the first surface 101 of the battery protective film of

[0089] As Figure 8 and Figure 9 shown, the battery protective film may not include a crack stopping structure, that is, a tearing structure 200 and a tearing guiding structure 300 are provided on the protective film 100, and the tearing structure and the tearing guiding structure are arranged at intervals. Since there is an interval between the two, when the operator pulls the lifting part, the pulling force is transmitted along with the lifting part to the edge of the main body part, so that the part of the main body part adhered to the upper surface of the battery is lifted from the upper surface of the battery together with the lifting part, so that the operator does not need to manually pick open the main body part adhered to the upper surface of the battery, improving the battery replacement efficiency.

[0090] Specifically, the tearing structure 200 may be a tear opening, and the tearing guiding structure 300 may be a tear line.

[0091] Exemplarily, the tear line may include a first tear line 310. The first tear line 310 includes two parallel segments 311 and a curved segment 312 connected between the two parallel segments 311. The first ends of the two parallel segments 311 are connected to opposite ends of the curved segment 312, and the second ends of the parallel segments 311 both extend towards the lifting part 120.

[0092] Furthermore, as Figure 8 and Figure 9 shown, a glue application area 130 is also provided on the protective film. The glue application area 130 is distributed on the main body part 110 and extends to a part of the lifting part 120. The tear line has a first end and a second end. The glue application area 130 further includes a glue-free area 140, and the glue-free area 140 is arranged between the first end and the second end of the tear line.

[0093] Specifically, the sizing area 130 includes a first glue area 131 and a second glue area 132. The second glue area 132 includes a first area 1321 and a second area 1322. The first area 1321 is located on the side of the main body 110 close to the lifting part 120, and the second area 1322 is located on the side of the main body 110 away from the lifting part 120. The first glue area 131 is located between the first area 1321 and the second area 1322. The tear line includes a first tear line 310. The first tear line 310 has a first end and a second end, and the first end and the second end extend into the first area 1321, which is beneficial for the crack to extend to the first tear line 310 from the tear opening when the battery is disassembled.

[0094] Figure 10 Schematic structural diagram of a battery protection film provided by an embodiment of the present application; Figure 11 is Figure 10 Schematic structural diagram of the first surface 101 of the battery protection film of.

[0095] As Figure 10 and Figure 11 As shown in and, the battery protection film may not include a crack stopping structure, that is, a tearing structure 200 and a tearing guiding structure 300 are provided on the protection film 100, and the tearing structure and the tearing guiding structure are arranged at intervals. Due to the interval between the two, when the operator pulls the lifting part, the pulling force is transmitted along with the lifting part to the edge of the main body, so that the part of the main body adhered to the upper surface of the battery is lifted from the upper surface of the battery together with the lifting part, enabling the operator to remove the main body adhered to the upper surface of the battery without manual picking, thus improving the battery replacement efficiency.

[0096] Specifically, the tearing structure 200 may be a tear opening, and the tearing guiding structure 300 may be a tear line.

[0097] Exemplarily, the tear line may include a first tear line 310 and a second tear line 320. The second tear line 320 is arranged parallel and at intervals on the side of at least part of the line segment of the first tear line 310, and the second tear line 320 is located on the side of the first tear line 310 close to the edge of the protection film 100. The interval between the first tear line 310 and the second tear line 320 is greater than or equal to 0.5 mm.

[0098] In the above structure, the second tearing line 320 can prevent the lifting part 120 from being damaged by the tearing crack when the lifting part 120 is pulled, so that the lifting part 120 falls off from the main body part 110 before the battery 500 is taken away from the wrapping of the main body part 110. Due to the setting of the second tearing line 320, when the operator pulls the lifting part, the pulling force is transmitted to the second tearing line 320 along with the tearing opening. After the crack extends to the second tearing line 320, since there is a gap between the second tearing line 320 and the first tearing line 310, the operator needs to continue applying force to make the crack extend from the second tearing line 320 to the first tearing line 310. At this time, the lifting part 120 can be separated from the main body part 110 along the path regulated by the first tearing line 310, so that the battery leaves the wrapping of the main body part 110.

[0099] Exemplarily, the values of the interval between the first tearing line 310 and the second tearing line 320 can be 0.5 mm, 0.7 mm, 1 mm, etc.

[0100] Specifically, as Figure 10 and Figure 11 shown, the first tearing line 310 includes two parallel segments 311 and a bending segment 312 connected between the two parallel segments 311. The first ends of the two parallel segments 311 are connected to the opposite ends of the bending segment 312, and the second ends of the parallel segments 311 both extend towards the lifting part 120. The second tearing line 320 and the parallel segments 311 are parallel to each other and arranged at intervals.

[0101] It should also be noted that both the first tearing line 310 and the second tearing line 320 are at least partially composed of virtual tangent lines. Among them, the virtual tangent lines include alternately arranged vacant segments and connecting segments, and the connecting segments in the first tearing line 310 and the second tearing line 320 are arranged in a staggered manner, so that the lifting part 120 can be separated from the main body part 110 under the action of the pulling force.

[0102] Of course, in some embodiments not shown in the figure, the battery protective film can also be provided with a crack stopping structure when the first tearing line 310 and / or the second tearing line 320 are provided.

[0103] In the second aspect, as Figures 1 to 3 shown, the present application provides an electrical device 30. The embodiments of the electrical device of the present application include a battery compartment 600, an adhesive layer 700, and the above-mentioned battery assembly 20. The second surface of the protective film in the battery assembly 20 is adhesively bonded to the inside of the battery compartment 600 through the adhesive layer 700.

[0104] Exemplarily, the adhesive layer 700 can be a double-sided adhesive tape, and the double-sided adhesive tape can adhesively bond the main body part of the protective film 100 inside the battery compartment 600, so that the battery can be tightly fixed to the battery compartment 600.

[0105] Of course, in some embodiments, the electrical device may not include an adhesive layer, and the protective film 100 may be directly pasted in the battery compartment by providing an integrally formed sizing area on the second surface of the protective film.

[0106] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection or an indirect connection through an intermediate medium. It may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0107] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0108] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims, and drawings of the present application are used to distinguish similar objects and do not necessarily have to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0109] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery assembly, characterized in that: Including battery and protective film; The protective film is wrapped around the battery and bonded to the battery, the protective film includes a main body and a lifting part, the main body covers the bottom and side surfaces of the battery, and the lifting part is connected to the main body and covers the top surface of the battery; The edge of the lifting part is provided with a tearing structure, the main body is provided with a tearing guide structure, and the tearing guide structure is spaced apart from the tearing structure; The tearing structure and the tearing guide structure are configured such that when the lifting portion is subjected to a lifting force, the tearing structure is split and communicated with the tearing guide structure.

2. The battery assembly according to claim 1, characterized in that: The tear guide structure is located at the bottom surface of the battery; The tearing structure comprises a tearing opening, a first end of the tearing opening is located at an edge of the lifting portion, and a second end of the tearing opening extends toward the tearing guide structure.

3. The battery assembly according to claim 2, characterized in that: The tearing opening is located between the edge of the lifting portion and the edge of the main body portion. There are two tearing openings, and the two tearing openings are respectively arranged on opposite sides of the lifting portion.

4. The battery assembly according to claim 3, characterized in that: The tear guide structure comprises a tear line, which is arranged on the main body, and has a first end and a second end, and the first end and the second end of the tear line are respectively arranged at intervals between the tear openings.

5. The battery assembly according to claim 4, characterized in that: The structural strength of the main body at the tear line is smaller than the structural strength of the main body outside the tear line.

6. The battery assembly according to claim 4, characterized in that: The tear line includes a first tear line, the first tear line is curved, both ends of the first tear line point to the tearing opening, and the middle portion of the first tear line protrudes toward a side away from the lifting portion.

7. The battery assembly according to claim 6, characterized in that: The tear line also includes a second tear line, which is parallel to and spaced apart from the side of at least part of the line segment of the first tear line, and the second tear line is located on the side of the first tear line close to the edge of the protective film, and the interval between the first tear line and the second tear line is greater than or equal to 0.5 mm.

8. The battery assembly according to claim 7, characterized in that: The first tear line includes two parallel sections and a curved section connected between the two parallel sections. The first ends of the two parallel sections are connected to the opposite ends of the curved section. The second ends of the parallel sections extend toward the lifting portion. The second tear line and the parallel sections are parallel to each other and spaced apart.

9. The battery assembly according to claim 8, characterized in that: The first tear line and the second tear line are at least partially composed of virtual tangent lines, wherein the virtual tangent lines include alternately arranged vacant segments and connecting segments, and the connecting segments in the first tear line and the second tear line are staggered with each other.

10. The battery assembly according to claim 6, characterized in that: The protective film further comprises a crack-stopping structure, which is arranged on a side of the tearing opening away from the lifting portion, and the crack-stopping structure comprises a crack-stopping opening, which is connected to the tearing guide structure and is spaced apart from the tearing structure.

11. The battery assembly according to any one of claims 2 to 9, characterized in that: The protective film further comprises a crack-stopping structure, and the crack-stopping structure is arranged on a side of the tearing opening away from the lifting portion.

12. The battery assembly according to claim 11, characterized in that: The crack-stopping structure comprises a crack-stopping opening, a distance is provided between the crack-stopping opening and the tearing opening, and the crack-stopping opening and the tearing opening are arranged at an interval.

13. The battery assembly according to claim 12, characterized in that: The protective film is provided with a glue application area, the glue application area includes a first glue area and a second glue area, the bonding strength of the second glue area is greater than the bonding strength of the first glue area, the second glue area includes a first region and a second region, the first region is located at a first edge of the main body close to the lifting part, the second region is located at a second edge of the main body away from the lifting part, and the first glue area is located between the first region and the second region.

14. The battery assembly according to claim 13, characterized in that: The first region extends to the lifting portion and covers part of the lifting portion, the first region is provided between the two tearing openings, the tear stop openings include two, and the first region further includes a glue-free area, and the glue-free area is provided between the two tear stop openings.

15. The battery assembly according to claim 4, characterized in that: The protective film is provided with a glue application area, and the protective film is bonded to the battery through the glue application area. The glue application area is distributed on the main body and extends to part of the pulling part. The tear line has a first end and a second end. A glue-free area is provided in the glue application area, and the glue-free area is located between the first end of the tear line and the second end of the tear line.

16. An electrical device, characterized in that: It comprises a battery compartment, an adhesive layer and a battery assembly according to any one of claims 1 to 15, wherein the second outer wall surface of the protective film in the battery assembly is bonded to the battery compartment through the adhesive layer.

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