Battery assembly and electric device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery assembly and an electric device, the battery assembly comprises a battery core assembly, an electrolytic glue composite sheet and a switch, the battery core assembly is pasted in a battery cabin through the electrolytic glue composite sheet, and the battery core assembly is connected with the electrolytic glue composite sheet through the switch. The battery cell assembly can be fixed in the battery bin through the electrolytic glue composite sheet, compared with a screw fixing mode, the battery cell assembly has the advantage of being convenient to install, a screw locking lug does not need to be arranged on the battery cell assembly, the structure can be more compact, and the energy density is higher. And when the battery needs to be disassembled, the battery core assembly can be used for electrifying the electrolytic adhesive composite sheet through the control switch so as to remove the viscosity of the electrolytic adhesive composite sheet, and then the battery core assembly can be taken out from the battery compartment. When the battery core assembly is disassembled, the electric energy of the battery core assembly is utilized, so that the electrolytic glue composite sheet is electrified and stripped, an external power supply is not needed to remove the viscosity of the electrolytic glue composite sheet, and the disassembly is convenient and fast.

Description

Technical Field

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

[0002] Batteries in existing electrical devices, such as mobile phone batteries, tablet batteries, and laptop batteries, are usually fixed by screws or clips.

[0003] For screw-fixed devices, tools are required for disassembly, making quick replacement impossible and causing inconvenience for replacement and maintenance.

[0004] Therefore, how to facilitate battery disassembly is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a battery assembly and power supply device that can effectively improve the ease of battery disassembly.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A battery assembly includes: a battery cell assembly, an electrolytic adhesive composite sheet, and a switch. The electrolytic adhesive composite sheet is adhered to the surface of the battery cell assembly. The battery cell assembly is connected to the electrolytic adhesive composite sheet via the switch. When the switch is in a first position, the battery cell assembly and the switch are electrically disconnected, and the electrolytic adhesive composite sheet is adhesive. When the switch is in a second position, the battery cell assembly and the switch are electrically connected, energizing the electrolytic adhesive composite sheet to release its adhesiveness.

[0008] In some embodiments, the battery compartment is provided with a first conductive layer, and the electrolytic adhesive composite sheet includes an adhesive layer, a second conductive layer, and an electrolytic tape stacked sequentially. The battery cell assembly is bonded to the adhesive layer, and the battery cell assembly is electrically connected to the first conductive layer and the second conductive layer respectively through the switch. When the switch is in a first position, the battery cell assembly is electrically disconnected from the first conductive layer and / or the second conductive layer, while the electrolytic tape is bonded to the first conductive layer and / or the second conductive layer. When the switch is in a second position, the battery cell assembly is electrically connected to the first conductive layer and the second conductive layer.

[0009] In some embodiments, the battery assembly further includes a protection plate, which has a first positive electrode connection portion, a first negative electrode connection portion, a second positive electrode connection portion, and a second negative electrode connection portion. The first positive electrode connection portion is connected to the positive electrode of the battery cell assembly, the first negative electrode connection portion is connected to the negative electrode of the battery cell assembly, the second negative electrode connection portion is connected to the first conductive layer, and the second positive electrode connection portion is connected to the second conductive layer. When the switch is in a first position, the first positive electrode connection portion and the second positive electrode connection portion are disconnected, and the first negative electrode connection portion and the second negative electrode connection portion are disconnected. When the switch is in a second position, the first positive electrode connection portion and the second positive electrode connection portion are connected, and the first negative electrode connection portion and the second negative electrode connection portion are connected.

[0010] In some embodiments, the battery cell assembly includes a battery cell, a bracket, and a cover plate. The bracket has a cavity for accommodating the battery cell and the protection plate. The cover plate is disposed on the bracket. The bracket is attached to the battery compartment by the electrolytic adhesive composite sheet.

[0011] In some embodiments, the cover plate is provided with a sliding groove, and the switch is slidably connected in the sliding groove. The side of the switch facing the protective plate is provided with a first conductive part and a second conductive part. When the switch is slid to a first position, the first conductive part is disconnected from the first positive electrode connection part and / or the second positive electrode connection part, and the second conductive part is disconnected from the first negative electrode connection part and / or the second negative electrode connection part. When the switch is slid to a second position, the first conductive part is connected to the first positive electrode connection part and the second positive electrode connection part, and the second conductive part is connected to the first negative electrode connection part and the second negative electrode connection part.

[0012] In some embodiments, guide grooves are provided on both sides of the bottom of the slide groove, and guide hooks are provided on both sides of the switch. The guide hooks are engaged with the guide grooves and can slide relative to the guide grooves.

[0013] In some embodiments, the switch includes a slider, the bottom of which is provided with a first conductive part and a second conductive part, the upper part of which is provided with a pushing part, the pushing part being located in the groove, the slider being located below the cover plate, the length of the pushing part along a first direction being less than the length of the groove along the first direction, the first direction being the sliding direction of the slider.

[0014] In some embodiments, a disconnection status indicator is provided on one side of the upper part of the slider, and a connection status indicator is provided on the other side. The disconnection status indicator and the connection status indicator are respectively located on both sides of the push part.

[0015] In some embodiments, both the first conductive part and the second conductive part are conductive foams adhered to the bottom of the slider.

[0016] In some embodiments, clearance grooves are provided on both sides of the bottom of the slider.

[0017] In some embodiments, the battery assembly further includes a conductive post, one end of which is connected to the first conductive layer and the other end of which is connected to the second negative electrode connection portion on the protective plate; the side of the electrolytic adhesive composite sheet is provided with a conductive connection portion, which is connected to the second positive electrode connection portion.

[0018] In some embodiments, when the inner bottom surface of the battery compartment is an insulating layer, the battery assembly further includes a conductive sheet, the conductive sheet being the first conductive layer, the conductive sheet being connected to the inner bottom surface of the battery compartment, the electrolytic tape being adhered to the conductive sheet, and one end of the conductive post being connected to the conductive sheet.

[0019] In some embodiments, the battery compartment has at least one conductive inner bottom surface, the inner bottom surface of the battery compartment is the first conductive layer, the electrolytic adhesive composite sheet is bonded to the inner bottom surface of the battery compartment, and one end of the conductive post is connected to the inner bottom surface of the battery compartment.

[0020] In some embodiments, the conductive post includes a conductive cylinder, a conductive terminal, and a spring. One end of the conductive cylinder is connected to the first conductive layer, one end of the conductive terminal is slidably connected to the conductive cylinder, and the spring is disposed in the conductive cylinder to abut the other end of the conductive terminal against the second negative electrode connection portion.

[0021] In some embodiments, the second negative electrode connection portion is provided with a limiting hole, the inner diameter of the limiting hole gradually decreases from bottom to top, and the upper end of the conductive terminal is pressed against the limiting hole under the elastic force of the spring.

[0022] An electrical device comprising the battery assembly described in any of the preceding claims.

[0023] Compared with existing technologies, the above technical solution has at least the following advantages:

[0024] This utility model provides a battery assembly and electrical device, comprising: a battery cell assembly, an electrolytic adhesive composite sheet, and a switch. The electrolytic adhesive composite sheet is adhered to the surface of the battery cell assembly, and the battery cell assembly is connected to the electrolytic adhesive composite sheet via the switch. The electrolytic adhesive composite sheet secures the battery cell assembly within the battery compartment, offering advantages over screw fastening methods in terms of ease of installation. Furthermore, it eliminates the need for screw lugs on the battery cell assembly, resulting in a more compact structure and higher energy density. For disassembly, the switch energizes the electrolytic adhesive composite sheet via the battery cell assembly, releasing its adhesiveness, allowing the battery cell assembly to be removed from the battery compartment. Since the disassembly of the battery cell assembly utilizes its own electrical energy to energize and peel off the electrolytic adhesive composite sheet, no external power source is required to release its adhesiveness, making disassembly convenient. Attached Figure Description

[0025] 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 only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 An exploded view of a battery assembly provided for a specific embodiment of this utility model;

[0027] Figure 2 An exploded view of a partial structure of a battery assembly according to a specific embodiment of this utility model;

[0028] Figure 3 This is a cross-sectional view of a partial structure of a battery assembly provided in a specific embodiment of the present invention.

[0029] Figure 4 A schematic diagram of a battery assembly in the off state, provided for a specific embodiment of this utility model;

[0030] Figure 5 A schematic diagram of the structure of a battery assembly in the connected state according to a specific embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the structure of a switch for a battery assembly provided in a specific embodiment of this utility model;

[0032] Figure 7 A schematic diagram of the bottom structure of a switch for a battery assembly provided in a specific embodiment of this utility model;

[0033] Figure 8 Another cross-sectional view of a partial structure of a battery assembly provided for a specific embodiment of this utility model;

[0034] Figure 9 A schematic diagram of the structure of an electrolytic adhesive composite sheet for a battery assembly provided in a specific embodiment of this utility model;

[0035] Figure 10 This is a schematic diagram of a battery assembly provided for a specific embodiment of the present invention.

[0036] The attached figures are labeled as follows:

[0037] 10-Battery cell assembly, 11-Battery cell, 12-Cover plate, 13-Bracket, 14-Label;

[0038] 20 - Electrolytic adhesive composite sheet; 21 - Conductive connection part;

[0039] 30-Switch, 301-Slider, 302-Pushing part, 31-Off state indicator, 32-Connected state indicator, 33-First conductive part, 34-Second conductive part, 35-Guide hook;

[0040] 40-Protection plate, 41-First positive electrode connection part, 42-First negative electrode connection part, 43-Second positive electrode connection part, 44-Second negative electrode connection part, 441-Limiting hole;

[0041] 50 - Battery compartment; 51 - Positioning pin;

[0042] 60-Conductive sheet;

[0043] 70-Conductive post, 71-Conductive cylinder, 72-Conductive terminal, 73-Spring. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] Please refer to Figures 1 to 10 .

[0046] This utility model provides a battery assembly including a cell assembly 10, an electrolytic adhesive composite sheet 20, and a switch 30. The cell assembly 10 is attached to the battery compartment 50 by the electrolytic adhesive composite sheet 20. The electrolytic adhesive composite sheet 20 secures the cell assembly 10 within the battery compartment 50, offering the advantage of easier installation compared to screw fixing. Furthermore, it eliminates the need for screw lugs on the cell assembly 10, resulting in a more compact structure and higher energy density. The battery cell assembly 10 is connected to the electrolytic adhesive composite sheet 20 via a switch 30. During assembly, the switch 30 is in the first position, and the battery cell assembly 10 and the switch 30 are electrically disconnected. At this time, the battery cell assembly 10 does not supply power to the electrolytic adhesive composite sheet 20, which is adhesive and can thus adhere the battery cell assembly 10 to the battery compartment 50. When disassembly is required, the switch 30 is in the second position, and the battery cell assembly 10 and the switch 30 are electrically connected. Therefore, the battery cell assembly 10 can supply power to the electrolytic adhesive composite sheet 20 to release its adhesiveness, allowing the battery cell assembly 10 to be removed from the battery compartment 50. Since the battery cell assembly 10 uses its own electrical energy to energize and peel off the electrolytic adhesive composite sheet 20 during disassembly, no external power source is needed to release the adhesiveness, making disassembly convenient.

[0047] In some embodiments, the battery compartment 50 is provided with a first conductive layer, and the electrolytic adhesive composite sheet 20 includes an adhesive layer, a second conductive layer and an electrolytic tape stacked sequentially. The adhesive layer can be a double-sided adhesive layer or a glue layer, and the second conductive layer can be a copper foil, aluminum foil or other conductive metal sheet. The battery cell assembly 10 is bonded to the adhesive layer, and the battery cell assembly 10 is electrically connected to the first conductive layer and the second conductive layer respectively through a switch 30. When the switch 30 is in the first position, the battery cell assembly 10 is electrically disconnected from the first conductive layer and / or the second conductive layer, that is, it is only necessary to ensure that the battery cell assembly is disconnected from one of the conductive layers. The electrolytic tape is bonded to the first conductive layer and / or the second conductive layer. When the second conductive layer is not energized, the electrolytic tape can bond to the first conductive layer and the second conductive layer. When it is necessary to disassemble the battery cell assembly, the switch 30 can be controlled to be in the second position, and the battery cell assembly 10 is electrically connected to the first conductive layer and the second conductive layer. At this time, the electrolytic tape loses its adhesiveness when energized.

[0048] It should be noted that the electrolytic adhesive composite sheet 20 can exist in at least three forms: First, the adhesive layer of the battery cell assembly 10 is bonded to the electrolytic adhesive composite sheet 20, and the electrolytic adhesive tape of the electrolytic adhesive composite sheet 20 is connected to the first conductive layer, for example, the adhesive layer is located above the second conductive layer, and the electrolytic adhesive tape is located below the second conductive layer; Second, the electrolytic adhesive tape is placed above the second conductive layer, and the adhesive layer is located below the second conductive layer. In this case, a first conductive layer can be set below the battery cell assembly 10, and the first conductive layer is fixedly connected to the battery cell assembly 10; Third, the adhesive layer in the first or second type of electrolytic adhesive composite sheet can be replaced with electrolytic adhesive tape.

[0049] It should also be noted that electrolytic tape is a type of tape that loses its adhesiveness when energized. Electrolytic tape typically comprises a first point debonding layer, a non-woven fabric layer, and a second point debonding layer, all stacked together. This application can select an electrolytic tape that loses its adhesiveness on the low-potential side when energized, an electrolytic tape that loses its adhesiveness on the high-potential side when energized, or an electrolytic tape that loses its adhesiveness entirely when energized. When energized, a potential difference exists across the electrolytic tape. The cations in the first and second point debonding layers migrate from the high-potential side to the low-potential side, forming a boundary layer that causes the surface of that side to lose its adhesiveness.

[0050] In some embodiments, such as Figure 1 and Figure 2As shown, the battery assembly also includes a protection plate 40. The protection plate 40 is provided with a first positive electrode connection portion 41, a first negative electrode connection portion 42, a second positive electrode connection portion 43, and a second negative electrode connection portion 44. The first positive electrode connection portion 41 is connected to the positive electrode of the cell assembly 10, the first negative electrode connection portion 42 is connected to the negative electrode of the cell assembly 10, the second negative electrode connection portion 44 is connected to the first conductive layer, and the second positive electrode connection portion 43 is connected to the second conductive layer. For example, the first positive electrode connection portion 41 includes a first positive electrode connecting strip, the first negative electrode connection portion 42 includes a first negative electrode connecting strip, the first positive electrode connecting strip and the first negative electrode connecting strip are parallel to each other and spaced apart, the second positive electrode connection portion 43 includes a second positive electrode connecting strip, the second negative electrode connection portion 44 includes a second negative electrode connecting strip, the second positive electrode connecting strip and the second negative electrode connecting strip are parallel to each other and spaced apart, and one end of the first positive electrode connecting strip and the first negative electrode connecting strip is spaced apart from one end of the second positive electrode connecting strip and the second negative electrode connecting strip. When switch 30 is in the first position, the first positive terminal connection 41 and the second positive terminal connection 43 are disconnected, and the first negative terminal connection 42 and the second negative terminal connection 44 are disconnected. At this time, switch 30 is only connected to the first positive terminal connection 41 and the first negative terminal connection 42, or only connected to the second positive terminal connection 43 and the second negative terminal connection 44. When switch 30 is in the second position, the first positive terminal connection 41 and the second positive terminal connection 43 are connected, and the first negative terminal connection 42 and the second negative terminal connection 44 are connected. At this time, switch 30 is in contact with the first positive terminal connection 41, the first negative terminal connection 42, the second positive terminal connection 43 and the second negative terminal connection 44 respectively, and is electrically connected. By using the protection plate 40 as a carrier to set each connection part, the stability of each connection part can be improved. Moreover, by simultaneously disconnecting the connection between the battery cell assembly 10 and the first conductive layer and the second conductive layer by the switch 30, that is, when the battery cell assembly 10 is in the installation state, the positive and negative terminals of the battery cell assembly 10 are disconnected from the first conductive layer and the second conductive layer, which can ensure the installation stability of the battery cell assembly 10.

[0051] In some embodiments, such as Figure 3As shown, the battery cell assembly 10 includes a battery cell 11, a bracket 13, and a cover plate 12. The bracket 13 has a cavity for accommodating the battery cell 11 and the protection plate 40. For example, when the battery cell 11 has a cuboid structure, the cavity in the bracket 13 also has a corresponding cuboid cavity structure. The bracket 13 has an opening at the top, and the cover plate 12 is placed on the bracket 13 to encapsulate the battery cell 11 in the cavity. The cover plate 12 can be fixed to the bracket 13 by screws or snap-fit, or other methods can be used, depending on the actual needs. The bracket 13 is attached to the battery compartment 50 by an electrolytic adhesive composite sheet 20. To improve the fixing accuracy of the bracket 13, a positioning pin 51 can be provided on the battery compartment 50. Positioning holes are provided at the corners of the bracket 13. During installation, the positioning holes and positioning pins 51 cooperate with each other to limit the position of the bracket 13 on the battery compartment 50. Specifically, the electrolytic adhesive composite sheet 20 can be a rectangular frame structure, meaning that the bottom four edges of the bracket 13 are adhered to the battery compartment 50 using the rectangular frame structure of the electrolytic adhesive composite sheet 20. After the battery cell assembly 10 is assembled, a label 14 can be affixed to the cover plate 12.

[0052] In some embodiments, the cover plate 12 is provided with a groove, and the switch 30 is slidably connected in the groove. The side of the switch 30 facing the protective plate 40 is provided with a first conductive part 33 and a second conductive part 34. For example, the groove is located above the protective plate 40, and the first conductive part 33 and the second conductive part 34 are provided below the switch 30. The first conductive part 33 and the second conductive part 34 are both conductive foams pasted to the bottom of the slider 301. The two conductive foams can be selected as long strip structures arranged parallel to each other. Through the deformability of the conductive foam, the connection tightness between the conductive foam and the first positive electrode connection part 41, the first negative electrode connection part 42, the second positive electrode connection part 43 and the second negative electrode connection part 44 can be improved, thereby ensuring the conductivity effect. Of course, the conductive foam is only a preferred structure. In addition, other conductive materials can be selected to make the first conductive part 33 and the second conductive part 34 according to actual needs. When the switch 30 is slid to the first position, the first conductive part 33 is disconnected from the first positive terminal connection part 41 and / or the second positive terminal connection part 43, that is, the first conductive part 33 is disconnected from one of them or from both, and the second conductive part 34 is disconnected from the first negative terminal connection part 42 and / or the second negative terminal connection part 44, that is, the second conductive part 34 is disconnected from one of them or from both; when the switch 30 is slid to the second position, the first conductive part 33 is connected to the first positive terminal connection part 41 and the second positive terminal connection part 43, and the second conductive part 34 is connected to the first negative terminal connection part 42 and the second negative terminal connection part 44.

[0053] It should be noted that, in the above embodiments, controlling the switch 30 by sliding is only an optional method. A push-button switch 30 or a rotary switch 30 can also be used. For example, for the push-button switch 30, the push-button switch 30 is mounted on the cover plate 12. The bottom of the push-button switch 30 is also provided with a first conductive part 33 and a second conductive part 34. When the push-button switch 30 is not pressed, the first conductive part 33 and the second conductive part 34 are not in contact with the first positive electrode connection part 41, the first negative electrode connection part 42, the second positive electrode connection part 43, and the second negative electrode connection part 44 on the protective plate 40. When the push-button switch 30 is pressed until the first conductive part 33 and the second conductive part 34 are in contact with each connection part, the push-button switch 30 is locked in the pressed position. The working principle of the push-button switch 30 can be referred to the prior art. In addition, the working principle of the rotary switch 30 can also be referred to the prior art. This application will not elaborate on this.

[0054] In some embodiments, such as Figure 3 As shown, guide grooves are provided on both sides of the bottom of the slide groove. For example, a guide rail can be provided on each side of the bottom of the slide groove. Both guide rails include a vertical strip and an L-shaped plate with an L-shaped cross-section. There is a preset gap between the horizontal plate and the vertical strip of the L-shaped plate. Guide hooks 35 are provided on both sides of the switch 30. The guide hooks 35 are placed on the guide groove and can slide relative to the guide groove. The guide groove and guide hooks 35 can improve the smoothness of the sliding of the switch 30. For example, the guide hook 35 includes a hook head and a limiting groove. The hook head is placed on the horizontal plate of the L-shaped plate, and the lower part of the vertical strip is located in the limiting groove. The vertical strip can limit the hook head to ensure that the hook head slides stably in the space formed by the L-shaped plate and the vertical strip.

[0055] In some embodiments, such as Figure 3 and Figure 8 As shown, the switch 30 includes a slider 301, a first conductive part 33 and a second conductive part 34 disposed at the bottom of the slider 301, and a pushing part 302 disposed at the upper part of the slider 301. The upper surface of the pushing part 302 can be provided with a concave-convex structure to improve the friction of the pushing part 302, thereby facilitating the user to operate the pushing part 302. The pushing part 302 is located in the slide groove, and the slider 301 is located below the cover plate 12. The length of the pushing part 302 along the first direction is less than the length of the slide groove along the first direction to ensure that the pushing part 302 can move in the slide groove. The first direction is the sliding direction of the slider 301.

[0056] In some embodiments, a disconnection status indicator 31 is provided on one side of the upper part of the slider 301, and a connection status indicator 32 is provided on the other side. The disconnection status indicator 31 and the connection status indicator 32 are respectively located on both sides of the push part 302. Figures 4 to 6As shown, the upper left side of the slider 301 is provided with a disconnected state indicator 31, and the upper right side of the slider 301 is provided with a connected state indicator 32. When the slider 301 moves to the right side of the slide groove, the disconnected state indicator 31 is exposed from the slide groove, and the connected state indicator 32 is hidden under the cover plate 12. This position indicates that the first conductive part 33 is disconnected from the second positive terminal connection part 43, and the second conductive part 34 is disconnected from the second negative terminal connection part 44. When the slider 301 moves to the left side of the slide groove, the connected state indicator 32 is exposed from the slide groove, and the disconnected state indicator 31 is hidden under the cover plate 12. This position indicates that the first conductive part 33 is in contact with the first positive terminal connection part 41 and the second positive terminal connection part 43, and the second conductive part 34 is in contact with the first negative terminal connection part 42 and the second negative terminal connection part 44, so as to achieve electrical connection. The disconnected state indicator 31 and the connected state indicator 32 allow the user to intuitively know the state of the switch 30, thereby facilitating the operation of the switch 30. The disconnected state indicator 31 can indicate that the lock is open, and the connected state indicator 32 can indicate that the lock is locked. Other forms of indicator sections can also be used, such as the Chinese characters for "closed" or "broken" for the disconnected state indicator 31 and the Chinese characters for "open" or "connected" for the connected state indicator 32, or the disconnected state indicator 31 being "off" and the connected state indicator 32 being "on," etc. The choice of indicator section form can be made according to actual needs, and this embodiment does not limit this.

[0057] In some embodiments, such as Figure 7 As shown, clearance grooves are provided on both sides of the bottom of slider 301. Since the first positive electrode connection part 41, the first negative electrode connection part 42, the second positive electrode connection part 43 and the second negative electrode connection part 44 can protrude from the upper surface of the protective plate 40, the clearance grooves can avoid interference when slider 301 moves, thereby ensuring the accuracy of slider 301's movement position.

[0058] In some embodiments, such as Figure 8 As shown, the battery assembly also includes a conductive post 70. One end of the conductive post 70 is connected to the first conductive layer, and the other end of the conductive post 70 is connected to the second negative electrode connection portion 44 on the protection plate 40. That is, the protection plate 40 and the first conductive layer are connected through the conductive post 70. Figure 9 As shown, the side of the electrolytic adhesive composite sheet 20 is provided with a conductive connection portion 21, which is connected to the second positive electrode connection portion 43. The conductive connection portion 21 can be bonded to the second positive electrode connection portion 43 with conductive adhesive, without the need for spot welding or soldering. For example, the conductive connection portion 21 can be selected as a conductive bent piece, with the lower bent portion of the conductive bent piece connected to the side of the first conductive layer, and the upper bent portion of the conductive bent piece bonded to the second positive electrode connection portion 43 with conductive adhesive.

[0059] In some embodiments, when the inner bottom surface of the battery compartment 50 is an insulating layer, only the inner bottom surface of the battery compartment 50 can be selected as an insulating layer structure, or the entire structure of the battery compartment 50 can be selected as an insulating structure. The battery assembly also includes a conductive sheet 60, which is a first conductive layer. The conductive sheet 60 is connected to the inner bottom surface of the battery compartment 50. For example, a groove can be provided on the inner bottom surface of the battery compartment 50, the conductive sheet 60 is fixed in the groove, an electrolytic adhesive sheet is bonded to the conductive sheet 60, and one end of a conductive post 70 is connected to the conductive sheet 60. The conductive post 70 can be bonded to the conductive sheet 60 with conductive adhesive.

[0060] In some embodiments, at least the inner bottom surface of the battery compartment 50 is a conductive structure. This can be achieved by selecting only the inner bottom surface of the battery compartment 50 as the first conductive layer, or by selecting the entire structure of the battery compartment 50 as a conductive structure. The electrolytic adhesive composite sheet 20 is bonded to the inner bottom surface of the battery compartment 50, and one end of the conductive post 70 is connected to the inner bottom surface of the battery compartment 50. Due to the conductive structure of the battery compartment itself, there is no need to provide a conductive sheet 60 inside the battery compartment 50. That is, the conductive sheet 60 is suitable when the inner bottom surface of the battery compartment 50 is an insulating structure or when the entire battery compartment 50 is an insulating structure; the absence of the conductive sheet 60 is suitable when the inner bottom surface of the battery compartment 50 is a conductive structure or when the entire battery compartment 50 is a conductive structure.

[0061] In some embodiments, such as Figure 8 As shown, the conductive post 70 includes a conductive cylinder 71, a conductive terminal 72, and a spring 73. One end of the conductive cylinder 71 is connected to the first conductive layer. For example, when the battery compartment 50 is not equipped with a conductive sheet 60, one end of the conductive cylinder 71 can be directly connected to the battery compartment 50 to conduct electricity through the battery compartment 50. When the battery compartment 50 is equipped with a conductive sheet 60, a protrusion can be provided on the conductive sheet 60, and the lower end of the conductive cylinder 71 can be threaded to the outer periphery of the protrusion. One end of the conductive terminal 72 is slidably connected to the conductive cylinder 71. The spring 73 is provided inside the conductive cylinder 71 to abut the other end of the conductive terminal 72 against the second negative electrode connection part 44. For example, the two ends of the spring 73 abut against each other at the lower end of the conductive terminal 72 and the upper end of the protrusion, respectively. Under the elastic force of the spring 73, the conductive terminal 72 is subjected to an upward elastic force, thus improving the contact effect between the conductive terminal 72 and the second negative electrode connection part 44. A constriction can be provided at the upper end of the conductive cylinder 71, and a limiting flange is provided on the lower outer periphery of the conductive terminal 72 to prevent the conductive terminal 72 from detaching from the conductive cylinder 71. In addition, in order to facilitate the housing of the conductive cylinder 71 and the conductive terminal 72, a clearance cylinder can be provided on the bottom plate of the bracket 13. The upper end of the clearance cylinder can be supported on the bottom of the protective plate 40. The conductive cylinder 71 can be placed inside the clearance cylinder, and the conductive terminal 72 can extend from the upper end of the clearance cylinder to contact the second negative electrode connection part 44. The inner diameter of the clearance cylinder is preferably tapered from bottom to top.

[0062] In some embodiments, such as Figure 8 As shown, the second negative electrode connection part 44 is provided with a limiting hole 441. For example, the second negative electrode connection part 44 is provided with an insert embedded in the protective plate 40. The insert is provided with a limiting hole 441. The inner diameter of the limiting hole 441 gradually decreases from bottom to top. The outer diameter of the conductive terminal 72 is greater than the minimum inner diameter of the limiting hole 441 and less than the maximum inner diameter of the limiting hole 441. The upper end of the conductive terminal 72 is pressed against the limiting hole 441 under the elastic force of the spring 73, which can improve the contact effect between the conductive terminal 72 and the limiting hole 441.

[0063] This utility model embodiment also provides an electrical device, including the battery assembly provided in any of the above embodiments. The electrical device includes, but is not limited to, mobile phones, tablet computers, and laptop computers. The beneficial effects of the electrical device can be referred to the battery assembly in the above embodiments, and will not be repeated here.

[0064] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0066] The present invention provides a detailed description of a battery assembly and electrical device. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of these embodiments are merely for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A battery assembly, characterized in that, include: The battery cell assembly (10), the electrolytic adhesive composite sheet (20), and the switch (30) are provided. The electrolytic adhesive composite sheet (20) is attached to the surface of the battery cell assembly (10). The battery cell assembly (10) is connected to the electrolytic adhesive composite sheet (20) through the switch (30). When the switch (30) is in the first position, the battery cell assembly (10) and the switch (30) are electrically disconnected, and the electrolytic adhesive composite sheet is sticky. When the switch (30) is in the second position, the battery cell assembly (10) and the switch (30) are electrically connected, and the electrolytic adhesive composite sheet (20) is energized to release the stickiness of the electrolytic adhesive composite sheet (20).

2. The battery assembly according to claim 1, characterized in that, The battery compartment (50) is provided with a first conductive layer. The electrolytic adhesive composite sheet (20) includes an adhesive layer, a second conductive layer and an electrolytic tape stacked in sequence. The battery cell assembly (10) is bonded to the adhesive layer. The battery cell assembly (10) is electrically connected to the first conductive layer and the second conductive layer respectively through the switch (30). When the switch (30) is in the first position, the battery cell assembly (10) is electrically disconnected from the first conductive layer and / or the second conductive layer, and the electrolytic tape is bonded to the first conductive layer and / or the second conductive layer. When the switch (30) is in the second position, the battery cell assembly (10) is electrically connected to the first conductive layer and the second conductive layer.

3. The battery assembly according to claim 2, characterized in that, The battery assembly also includes a protection plate (40), which has a first positive electrode connection part (41), a first negative electrode connection part (42), a second positive electrode connection part (43), and a second negative electrode connection part (44). The first positive electrode connection part (41) is connected to the positive electrode of the cell assembly (10), the first negative electrode connection part (42) is connected to the negative electrode of the cell assembly (10), the second negative electrode connection part (44) is connected to the first conductive layer, and the second positive electrode connection part (43) is connected to the second conductive layer. When the switch (30) is in the first position, the first positive electrode connection part (41) and the second positive electrode connection part (43) are disconnected, and the first negative electrode connection part (42) and the second negative electrode connection part (44) are disconnected. When the switch (30) is in the second position, the first positive electrode connection part (41) and the second positive electrode connection part (43) are connected, and the first negative electrode connection part (42) and the second negative electrode connection part (44) are connected.

4. The battery assembly according to claim 3, characterized in that, The battery cell assembly (10) includes a battery cell (11), a bracket (13) and a cover plate (12). The bracket (13) has a cavity for accommodating the battery cell (11) and the protection plate (40). The cover plate (12) is disposed on the bracket (13). The bracket (13) is attached to the battery compartment (50) by the electrolytic adhesive composite sheet (20).

5. The battery assembly according to claim 4, characterized in that, The cover plate (12) is provided with a sliding groove, and the switch (30) is slidably connected in the sliding groove. The side of the switch (30) facing the protective plate (40) is provided with a first conductive part (33) and a second conductive part (34). When the switch (30) slides to the first position, the first conductive part (33) is disconnected from the first positive electrode connection part (41) and / or the second positive electrode connection part (43), and the second conductive part (34) is disconnected from the first negative electrode connection part (42) and / or the second negative electrode connection part (44). When the switch (30) slides to the second position, the first conductive part (33) is connected to the first positive electrode connection part (41) and the second positive electrode connection part (43), and the second conductive part (34) is connected to the first negative electrode connection part (42) and the second negative electrode connection part (44).

6. The battery assembly according to claim 5, characterized in that, The bottom of the slide groove is provided with guide grooves on both sides, and the switch (30) is provided with guide hooks (35) on both sides. The guide hooks (35) are placed on the guide grooves and can slide relative to the guide grooves.

7. The battery assembly according to claim 5, characterized in that, The switch (30) includes a slider (301), the bottom of which is provided with a first conductive part (33) and a second conductive part (34), and the upper part of which is provided with a pushing part (302). The pushing part (302) is located in the groove, and the slider (301) is located below the cover plate (12). The length of the pushing part (302) along the first direction is less than the length of the groove along the first direction. The first direction is the sliding direction of the slider (301).

8. The battery assembly according to claim 7, characterized in that, The upper part of the slider (301) is provided with a disconnection status indicator (31) on one side and a connection status indicator (32) on the other side. The disconnection status indicator (31) and the connection status indicator (32) are respectively located on both sides of the push part (302).

9. The battery assembly according to claim 7, characterized in that, The first conductive part (33) and the second conductive part (34) are both conductive foams attached to the bottom of the slider (301).

10. The battery assembly according to claim 7, characterized in that, The slider (301) has clearance grooves on both sides of its bottom.

11. The battery assembly according to claim 3, characterized in that, The battery assembly also includes a conductive post (70), one end of which is connected to the first conductive layer and the other end is connected to the second negative electrode connection part (44) on the protection plate (40); the side of the electrolytic adhesive composite sheet (20) is provided with a conductive connection part (21), which is connected to the second positive electrode connection part (43).

12. The battery assembly according to claim 11, characterized in that, When the inner bottom surface of the battery compartment (50) is an insulating layer, the battery assembly also includes a conductive sheet (60), the conductive sheet (60) is the first conductive layer, the conductive sheet (60) is connected to the inner bottom surface of the battery compartment (50), the electrolytic tape is bonded to the conductive sheet (60), and one end of the conductive post (70) is connected to the conductive sheet (60).

13. The battery assembly according to claim 11, characterized in that, The battery compartment (50) has at least one conductive structure on its inner bottom surface, the inner bottom surface of the battery compartment (50) is the first conductive layer, the electrolytic adhesive composite sheet (20) is bonded to the inner bottom surface of the battery compartment (50), and one end of the conductive post (70) is connected to the inner bottom surface of the battery compartment (50).

14. The battery assembly according to claim 11, characterized in that, The conductive post (70) includes a conductive cylinder (71), a conductive terminal (72), and a spring (73). One end of the conductive cylinder (71) is connected to the first conductive layer. One end of the conductive terminal (72) is slidably connected inside the conductive cylinder (71). The spring (73) is located inside the conductive cylinder (71) to abut the other end of the conductive terminal (72) against the second negative electrode connection part (44).

15. The battery assembly according to claim 14, characterized in that, The second negative electrode connection part (44) is provided with a limiting hole (441). The inner diameter of the limiting hole (441) gradually decreases from bottom to top. The upper end of the conductive terminal (72) is pressed against the limiting hole (441) under the elastic force of the spring (73).

16. An electrical appliance, characterized in that, Includes the battery assembly as described in any one of claims 1 to 15.

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