Battery assembly and electric equipment

Abstract

The utility model discloses a battery assembly and electric equipment. The battery assembly comprises a battery and a bonding piece. The battery comprises a packaging bag and a tab. The packaging bag comprises a top wall, a first side wall and a first sealing part. The first sealing part is connected with the top wall; the tab extends out of the first sealing part; the bonding piece comprises a first bonding layer, a second bonding layer and a conductive layer. The first bonding layer is connected with the first side wall. And the second bonding layer is configured to be connected with an external battery compartment. One side of the conductive layer is connected with the first bonding layer, and the other side is at least partially connected with the second bonding layer. The conductive layer comprises a first body and a first extension section connected with the first body, the first body is connected with the first side wall, and the first extension section extends to the second side wall or the side, away from the first side wall, of the first sealing part. And the second bonding layer is configured to weaken or disappear the viscosity when the conductive layer and the external battery compartment are electrified. The risk of battery damage can be reduced, and the space utilization rate is improved.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and more particularly to a battery module and an electrical device. Background Technology

[0002] Battery packs are currently widely used in various electronic devices such as mobile phones and tablets. Batteries are typically installed inside the battery compartment, and are currently secured to the compartment using methods such as double-sided tape and easy-tear adhesive. This makes it difficult to remove the battery from the compartment, can easily damage the battery, reduce its lifespan, and poses safety risks. Utility Model Content

[0003] In view of this, it is necessary to provide a battery assembly and electrical device that facilitates the removal of the battery and battery compartment.

[0004] Embodiments of this application provide a battery assembly including a battery and an adhesive. The adhesive is used to bond the battery to an external battery compartment. The battery includes a packaging bag and tabs. The packaging bag includes a top wall, a bottom wall, a first side wall, and a second side wall. The top wall and bottom wall are arranged along a first direction. The first side wall and the second side wall are arranged along a second direction. The first side wall connects to the top wall and the bottom wall. The second side wall connects to the top wall and the bottom wall. The packaging bag includes a first seal. The first seal connects to the top wall, and the tabs extend from the first seal. The first direction is perpendicular to the second direction, which is the thickness direction of the battery. The adhesive includes a first adhesive layer, a second adhesive layer, and a conductive layer. The first adhesive layer connects to the first side wall. The second adhesive layer is configured to connect to the external battery compartment. One side of the conductive layer is connected to the first adhesive layer, and the other side is at least partially connected to the second adhesive layer. The conductive layer includes a first body and a first extension connected to the first body. The first body connects to the first side wall, and the first extension extends to the second side wall or the side of the first seal opposite to the first side wall. The second adhesive layer is configured to weaken or disappear its adhesiveness when energized between the conductive layer and the external battery compartment. By ensuring that the adhesiveness of the second adhesive layer weakens or disappears when energized between the conductive layer and the battery compartment, it is easier to remove the battery from the battery compartment, reducing the risk of battery damage. Extending the first extension portion to the side of the first sealing portion away from the first sidewall reduces the space occupied by the first extension portion in the second direction, improving space utilization.

[0005] In one or more optional embodiments above, along the second direction, the projection of the first body is within the projection range of the first sidewall. The first extension section includes a first segment, a second segment, and a third segment connected in sequence. The first segment is connected to the first body, and the first segment is located at a side of the first sealing portion close to the first sidewall. The second segment is located at a side of the first sealing portion away from the top wall. The third segment is located at a side of the first sealing portion away from the first sidewall, and at least part of the third segment is exposed to the battery. Along the first direction, the projections of the first segment, the second segment, and the third segment are all within the projection range of the top wall, which is conducive to reducing the thickness space occupied by the first extension section, so that the first extension section does not exceed the first sidewall and the second sidewall, and is conducive to reducing the thickness of the battery assembly.

[0006] In one or more optional embodiments above, the first bonding layer includes a second body and a second extension section connected to the second body. One side of the second body is connected to the first body, and the other side of the second body is connected to the first sidewall. One side of the second extension section is connected to the first extension section, and the other side of the second extension section is connected to the first sealing portion. Along the second direction, the projections of the first body and the second body and the projection of the second bonding layer are all within the projection range of the first sidewall, which increases the area of the first bonding layer connected to the battery, improves the connection strength of the first bonding layer and the battery, and reduces the space occupied in the second direction.

[0007] In one or more optional embodiments above, the bonding member further includes an insulating layer. The insulating layer covers one side of the first segment and the second segment away from the second extension section. One side of the third segment away from the second extension section is at least partially exposed to the insulating layer. Along the second direction, the projection of the insulating layer overlaps the projection of the second bonding layer. Due to the fitting tolerance, a gap is likely to occur between the insulating layer and the second bonding layer, and the conductive layer in the gap is likely to short circuit with the battery compartment. By partially overlapping the insulating layer and the second bonding layer, the generation of the gap can be reduced, and the risk of short circuit caused by the contact between the conductive layer and the battery compartment is further reduced.

[0008] In one or more optional embodiments above, along the second direction, the width L1 of the overlapping part of the insulating layer and the second bonding layer satisfies 0 < L1 < 2 mm, which can achieve insulation and reduce the thickness space occupied by the overlapping part.

[0009] In one or more optional embodiments above, the second bonding layer includes a third body. One side of the third body is connected to the first body, and the other side of the third body is used to connect to the battery compartment. Along the second direction, the projections of the first body, the second body, and the third body are all within the projection range of the first sidewall, and the projection of the insulating layer overlaps the projection of the third body.

[0010] In one or more optional embodiments above, the second adhesive layer includes a third body and a third extension. One side of the third body is connected to the first body, and the other side of the third body is configured to be connected to the battery compartment. In the second direction, the projection of the first body, the projection of the second body, and the projection of the third body are all within the projection range of the first side wall. The third extension includes a fourth section, a fifth section, and a sixth section connected in sequence. The fourth section is connected to the third body, one side of the fourth section is connected to the first section, and one side of the fifth section is connected to the second section. One side of the sixth section is connected to the third section. The third section is at least partially exposed from the sixth section. The insulating layer covers the side of the fourth section, the fifth section, and the sixth section away from the first extension. Due to the gap between the first sealing portion and the inner wall of the battery compartment, the second adhesive layer is prone to adsorbing dust, debris, and other impurities. By covering the third extension with the insulating layer, the adsorption of dust, debris, and other impurities on the second adhesive layer can be reduced.

[0011] In one or more optional embodiments above, the battery further includes a first protective layer. The first protective layer is connected to the first side wall, the first sealing portion, and the second side wall. The tab and at least part of the first sealing portion are located within the first protective layer. The first adhesive layer is connected to the first protective layer. In the second direction, the projection of the insulating layer on the first side wall is separated from the projection of the first protective layer on the first side wall, reducing the overlap of the insulating layer and the first protective layer, reducing the occupied thickness space, and facilitating the reduction of the thickness of the battery.

[0012] In one or more optional embodiments above, the battery includes an electrode assembly and a conversion piece disposed in the packaging bag. The conversion piece is connected to the electrode assembly and the tab. In the second direction, the projection of the insulating layer is separated from the projection of the conversion piece, reducing the overlap of the insulating layer and the conversion piece, reducing the occupied thickness space, and facilitating the reduction of the thickness of the battery.

[0013] In one or more optional embodiments above, the conductive layer includes a base layer and a conductive sub-layer. The base layer is connected to the first adhesive layer, and the conductive sub-layer is connected to the side of the base layer away from the first adhesive layer.

[0014] In one or more optional embodiments above, the battery assembly includes two adhesive pieces. In the second direction, the two adhesive pieces are spaced apart in the third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0015] In one or more optional embodiments above, the adhesive member comprises a first connecting section, the first connecting section extends to a side of the second side wall or the first sealing portion away from the first side wall, the first connecting section is provided with an exposed hole, and the conductive layer is exposed to the exposed hole. The positive electrode of the external circuit is connected to the conductive layer through the exposed hole, and the negative electrode is connected to the battery compartment, or the negative electrode of the external circuit is connected to the conductive layer through the exposed hole, and the positive electrode is connected to the battery compartment. By exposing the conductive layer in the form of an exposed hole, the manufacturing process is optimized, the first adhesive layer, the conductive layer and the third adhesive layer are conveniently compounded into an adhesive member, the risk of short circuit caused by the electrical connection between the adhesive member and the external conductive member is reduced, and the structural strength of the first connecting section is improved. If necessary, the first connecting section can be forced to remove the battery from the battery compartment.

[0016] In one or more optional embodiments above, the adhesive member comprises an insulating layer, and in the second direction, the first adhesive layer, the conductive layer, the second adhesive layer and the insulating layer located in the first connecting section are sequentially stacked, the first adhesive layer located in the first connecting section is connected to a side of the second side wall or the first sealing portion away from the first side wall, and the exposed hole penetrates the second adhesive layer and the insulating layer in the second direction. The risk of short circuit caused by the contact between the conductive layer and the battery compartment is reduced.

[0017] In one or more optional embodiments above, in the first direction, the projection of the conductive layer located in the first connecting section in the second direction is located within the projection of the second adhesive layer and the insulating layer in the second direction, or the end of the first adhesive layer, the conductive layer, the second adhesive layer and the insulating layer located in the first connecting section is arranged flush. The risk of short circuit caused by the contact between the conductive layer and the battery compartment is reduced.

[0018] In one or more optional embodiments above, the adhesive member comprises a second connecting section, and in the second direction, the battery is located between the second connecting section and the first connecting section, in the second direction, the second adhesive layer, the conductive layer and the first adhesive layer located in the second connecting section are sequentially stacked, and the first adhesive layer located in the second connecting section is connected to the first side wall.

[0019] In one or more optional embodiments above, the battery further comprises a protection plate, the protection plate is arranged on the top wall and connected to the tab, the adhesive member covers the protection plate and the first sealing portion, the first connecting section is connected to the second side wall, and the second connecting section is connected to the first side wall. The protection plate and the first sealing portion are insulated and protected.

[0020] In one or more optional embodiments above, the battery further comprises a protection plate, the protection plate is arranged on the top wall and connected to the tab, the first sealing portion extends in the first direction, in the second direction, the protection plate is located on a side of the first sealing portion away from the first side wall, and the first connecting section extends to a side of the protection plate away from the first sealing portion.

[0021] An embodiment of the present application also provides a battery assembly. The battery assembly comprises a battery pack and a battery compartment. The battery pack comprises a battery cell, a first conductive layer, a second conductive layer, and a second adhesive layer. The first conductive layer is configured to be electrically connected to the battery cell. The second conductive layer is configured to be electrically connected to the battery compartment. The second adhesive layer is configured to be connected between the first conductive layer and the second conductive layer. The second adhesive layer is configured to be weakened or disappear in adhesion when electricity is conducted between the first conductive layer and the second conductive layer. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structural schematic diagram of a battery assembly and a battery compartment in some embodiments is shown.

[0023] Figure 2 A structural schematic diagram of a battery assembly and a battery compartment in some embodiments is shown.

[0024] Figure 3 A structural schematic diagram of a battery assembly in some embodiments is shown. Figure 2 A cross-sectional schematic diagram of a battery assembly in some embodiments is shown.

[0025] Figure 4 An exploded schematic diagram of a battery assembly in some embodiments is shown.

[0026] Figure 5 A cross-sectional schematic diagram of a battery assembly and a battery in some embodiments is shown.

[0027] Figure 6 An exploded schematic diagram of an adhesive member in some embodiments is shown.

[0028] Figure 7 A structural schematic diagram of a battery assembly in some embodiments is shown.

[0029] Figure 8 A structural schematic diagram of a battery assembly in some embodiments is shown. Figure 7 A structural schematic diagram of a battery assembly in some embodiments is shown.

[0030] Figure 9 A structural schematic diagram of a battery assembly in some embodiments is shown. Figure 7 A structural schematic diagram of a battery assembly in some embodiments is shown.

[0031] Figure 10 A cross-sectional schematic diagram of a battery assembly in some embodiments is shown. Figure 7 A cross-sectional schematic diagram of a battery assembly in some embodiments is shown.

[0032] Figure 11 An enlarged structural schematic diagram of A in some embodiments is shown. Figure 10 An enlarged structural schematic diagram of B in some embodiments is shown.

[0033] Figure 12 A structural schematic diagram of a battery assembly in some embodiments is shown. Figure 10 A structural schematic diagram of a battery assembly in some embodiments is shown.

[0034] Figure 13 A structural schematic diagram of a battery assembly in some embodiments is shown.

[0035] Figure 14 A cross-sectional view of a battery assembly is shown. Figure 13 A cross-sectional view of a battery assembly is shown.

[0036] Figure 15 A cross-sectional view of a battery assembly is shown. Figure 14 A cross-sectional view of a battery assembly is shown.

[0037] Figure 16 A cross-sectional view of a battery assembly is shown. Figure 14 A cross-sectional view of a battery assembly is shown.

[0038] Figure 17 A cross-sectional view of a battery assembly is shown.

[0039] Figure 18 A cross-sectional view of a battery assembly is shown.

[0040] Figure 19 A cross-sectional view of a battery assembly is shown. Figure 18 A cross-sectional view of a battery assembly is shown.

[0041] Figure 20 A cross-sectional view of a battery assembly is shown. Figure 18 A cross-sectional view of a battery assembly is shown.

[0042] Figure 21 A cross-sectional view of a battery assembly is shown.

[0043] Figure 22 A cross-sectional view of a battery assembly is shown. Figure 21 A cross-sectional view of a battery assembly is shown.

[0044] Figure 23 A cross-sectional view of a battery assembly is shown. Figure 21 A cross-sectional view of a battery assembly is shown.

[0045] Figure 24 A cross-sectional view of a battery assembly is shown. Figure 21 A cross-sectional view of a battery assembly is shown.

[0046] Figure 25 A cross-sectional view of a battery assembly is shown.

[0047] Figure 26 A cross-sectional view of a battery assembly is shown.

[0048] Figure 27 A cross-sectional view of a battery assembly is shown.

[0049] Figure 28 A cross-sectional view of a battery assembly is shown.

[0050] Figure 29 A cross-sectional view of a battery assembly is shown.Figure 26 Schematic exploded view of the middle adhesive member.

[0051] Figure 30 A schematic structural view of the middle adhesive member is shown. Figure 26 A schematic structural view of the middle adhesive member is shown.

[0052] Figure 31 A schematic structural view of the middle adhesive member is shown.

[0053] Figure 32 A schematic structural view of the middle adhesive member is shown.

[0054] Figure 33 A schematic structural view of the middle adhesive member is shown. Figure 28 A schematic structural view of the middle adhesive member is shown.

[0055] Figure 34 A schematic structural view of the middle adhesive member is shown.

[0056] Figure 35 A schematic structural view of the middle adhesive member is shown.

[0057] Explanation of main element symbols:

[0058] Battery assembly 100

[0059] Battery 10

[0060] Packaging bag 11

[0061] Main body portion 11a

[0062] Top wall 111

[0063] Bottom wall 112

[0064] First side wall 113

[0065] Second side wall 114

[0066] Third side wall 115

[0067] Fourth side wall 116

[0068] Sealing portion 11b

[0069] First sealing portion 101

[0070] Second sealing portion 102

[0071] Accommodating space 103

[0072] Tab 12

[0073] First protective layer 13

[0074] Protective plate 14

[0075] elastic member 14a

[0076] adapter 15

[0077] second protective layer 16

[0078] first opening 161

[0079] second opening 162

[0080] adhesive member 20

[0081] conductive layer 21

[0082] base layer 21a

[0083] conductive sub-layer 21b

[0084] first body 211

[0085] first extension 212

[0086] first section 212a

[0087] second section 212b

[0088] third section 212c

[0089] first adhesive layer 22

[0090] second body 221

[0091] second extension 222

[0092] second adhesive layer 23

[0093] first edge 23a

[0094] second edge 23b

[0095] third body 231

[0096] third extension 232

[0097] fourth section 232a

[0098] fifth section 232b

[0099] sixth section 232c

[0100] insulating layer 24

[0101] first connecting section 210

[0102] exposure hole 210a

[0103] second connecting section 220

[0104] Third connecting section 230

[0105] 100a protective film

[0106] Tear-off section 110

[0107] External devices 200

[0108] Battery compartment 201

[0109] 300 electrical appliances

[0110] First direction X

[0111] Second direction Y

[0112] Third direction Z

[0113] The following specific embodiments will further illustrate this application in conjunction with the above-described accompanying drawings. Detailed Implementation

[0114] The following specific embodiments are exemplary and not limiting, and are intended to provide a basic understanding of this application, and are not intended to identify key or decisive elements of this application or limit the scope of protection. As long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

[0115] When a component is considered to be "located" on another component, it can be directly on the other component or may also be interspersed with other components. When a component is considered to be "connected" to another component, it can be directly connected to the other component or may also be interspersed with other components.

[0116] It is understandable that the term "perpendicular" is used to describe an ideal state between two components. In actual production or use, two components can exist in a state that is approximately perpendicular or equal to each other. For example, combined with numerical description, perpendicularity can refer to the angle between two straight lines within the range of 90° ± 10°, the dihedral angle between two planes within the range of 90° ± 10°, or the angle between a straight line and a plane within the range of 90° ± 10°. The two components described as "perpendicular" do not have to be absolutely straight lines or planes; they can be approximately straight lines or planes. From a macroscopic perspective, if the overall direction of extension is a straight line or plane, the component can be considered a "straight line" or "plane".

[0117] The terms “vertical,” “horizontal,” “left,” “right,” “top,” “bottom,” “front,” “back,” and similar expressions used herein are for illustrative purposes only and are not intended to limit this application.

[0118] Unless otherwise defined, the term "multiple" in this document, when used to describe the number of components, specifically means that the component is two or more.

[0119] Embodiments of this application provide a battery assembly including a battery and an adhesive. The adhesive is used to bond the battery to a battery compartment. The battery includes a packaging bag and tabs. The packaging bag includes a top wall, a bottom wall, a first side wall, and a second side wall. The top wall and bottom wall are arranged along a first direction. The first side wall and the second side wall are arranged along a second direction. The first side wall connects to the top wall and the bottom wall. The second side wall connects to the top wall and the bottom wall. The packaging bag includes a first sealing portion. The first sealing portion connects to the top wall, and the tabs extend from the first sealing portion. The first direction is perpendicular to the second direction, which is the thickness direction of the battery. The adhesive includes a first adhesive layer, a second adhesive layer, and a conductive layer. The first adhesive layer connects to the first side wall. The second adhesive layer is configured to connect to the battery compartment. One side of the conductive layer is connected to the first adhesive layer, and the other side is at least partially connected to the second adhesive layer. The conductive layer includes a first body and a first extension connected to the first body. The first body connects to the first side wall, and the first extension partially extends to the second side wall or the side of the first sealing portion opposite to the first side wall. The second adhesive layer is configured to weaken or disappear its adhesiveness when energized between the conductive layer and the battery compartment. By ensuring that the adhesiveness of the second adhesive layer weakens or disappears when energized between the conductive layer and the battery compartment, it is easier to remove the battery from the battery compartment, reducing the risk of battery damage. Extending the first extension portion to the side of the first sealing portion away from the first sidewall reduces the space occupied by the first extension portion in the second direction, improving space utilization.

[0120] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0121] Please see Figures 1 to 6 The first embodiment of this application provides a battery assembly 100, including a battery 10 and an adhesive member 20. The adhesive member 20 is used to adhere the battery 10 to the battery compartment 201 of an external electrical device 200. The battery compartment 201 should be understood in this application as a cavity in the electrical device 200 for accommodating the battery 100. Its shape and size are designed according to the shape and size of the battery used, such as the cavity in the metal frame of a mobile phone for accommodating the battery 100, or a receiving cavity formed by the display screen and other components of a mobile phone for accommodating the battery 100. This receiving cavity can be sealed or unsealed. This application does not limit the type and structure of the battery compartment.

[0122] In some embodiments, the battery 10 includes a packaging bag 11 and tabs 12, with the tabs 12 extending out of the packaging bag 11.

[0123] In some embodiments, the battery 10 comprises an electrode assembly (not shown in the figure) disposed in the packaging bag 11, and the tab 12 is connected to the electrode assembly.

[0124] In some embodiments, the packaging bag 11 comprises a main body part 11a and a sealing part 11b, and the main body part 11a is connected to the sealing part 11b. The electrode assembly is disposed in the main body part 11a, and the tab 12 extends from the sealing part 11b.

[0125] In some embodiments, the main body part 11a comprises a top wall 111, a bottom wall 112, a first side wall 113, and a second side wall 114, the top wall 111 and the bottom wall 112 are arranged along a first direction X, the first side wall 113 and the second side wall 114 are arranged along a second direction Y, the first side wall 113 is connected to the top wall 111 and the bottom wall 112, and the second side wall 114 is connected to the top wall 111 and the bottom wall 112. The sealing part 11b comprises a first sealing part 101 connected to the top wall 111, and the tab 12 extends from the first sealing part 101, the first direction X is perpendicular to the second direction Y, and the second direction Y is the thickness direction of the battery 10.

[0126] In some embodiments, the main body part 11a comprises a third side wall 115 and a fourth side wall 116 arranged along a third direction Z, the third side wall 115 is connected to the top wall 111, the bottom wall 112, the first side wall 113, and the second side wall 114, and the fourth side wall 116 is connected to the top wall 111, the bottom wall 112, the first side wall 113, and the second side wall 114. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0127] In some embodiments, the sealing part 11b comprises two second sealing parts 102, one of which is connected to the third side wall 115, and the other of which is connected to the fourth side wall 116.

[0128] In some embodiments, the adhesive 20 comprises a conductive layer 21, a first adhesive layer 22, and a second adhesive layer 23. The first adhesive layer 22 is connected to the first side wall 113, and the second adhesive layer 23 is used to connect the battery compartment 201. One side of the conductive layer 21 is connected to the first adhesive layer 22, and the other side is at least partially connected to the second adhesive layer 23. The conductive layer 21 comprises a first body 211 connected to the first side wall 113 and a first extension 212 connected to the first body 211, and the first extension 212 partially extends to the second side wall 114 or the side of the first sealing part 101 away from the first side wall 113 to connect an external power source. The second adhesive layer 23 is configured to weaken or lose adhesion when electricity is passed between the conductive layer 21 and the battery compartment 201.

[0129] The application facilitates the disassembly of the battery 10 from the battery compartment 201 by weakening or eliminating the adhesion of the second adhesive layer 23 when electricity is applied between the conductive layer 21 and the battery compartment 201, reduces the risk of damaging the battery 10, and extends the first extension section 212 to the side of the first sealing portion 101 away from the first side wall 113, which can reduce the space occupied by the first extension section 212 in the second direction Y and improve space utilization.

[0130] It can be understood that the battery compartment 201 has conductivity, when a voltage is applied to the conductive layer 21 and the battery compartment 201, anions in the second adhesive layer 23 move to the positive electrode, and cations move to the negative electrode, and ions are deposited on the surface of the battery compartment 201, which hinders the adhesion of the second adhesive layer 23, so the adhesion is weakened or eliminated. With the passage of time after the voltage is applied, the ions moving to the positive and negative electrodes disperse, and the adhesion of the second adhesive layer 23 gradually recovers, and the battery 10 can be reattached to the battery compartment 201.

[0131] Please refer to Figures 6 to 11 In some embodiments, the projection of the first body 211 in the second direction Y is within the projection range of the first side wall 113, which can reduce the space occupied by the first body 211 in the first direction X.

[0132] In some embodiments, the projection of the first extension section 212 in the first direction X is within the projection range of the top wall 111. By arranging part of the first extension section 212 in the accommodating space formed by the top wall 111 and the first sealing portion 101, it is beneficial to reduce the thickness space occupied by the first extension section 212, so that the first extension section 212 does not exceed the first side wall 113 and the second side wall 114, which is beneficial to reduce the thickness of the battery assembly 100.

[0133] Please refer to Figure 11 In some embodiments, the first extension section 212 includes a first section 212a, the first section 212a is connected to the first body 211, and the first section 212a is located on the side of the first sealing portion 101 close to the first side wall 113.

[0134] In some embodiments, the first extension section 212 includes a second section 212b, the second section 212b is connected to the first section 212a, and the second section 212b is located on the side of the first sealing portion 101 away from the top wall 111.

[0135] In some embodiments, the first extension section 212 includes a third section 212c, the third section 212c is connected to the side of the second section 212b away from the first section 212a. The third section 212c is located on the side of the first sealing portion 101 away from the first side wall 113, and at least part of the third section 212c is exposed to the outermost side of the battery assembly 100 for connecting to an external power source.

[0136] In some embodiments, the projections of the first section 212a, the second section 212b and the third section 212c are all within the projection range of the top wall 111 along the first direction X.

[0137] In some embodiments, the length of the third section 212c is less than the length of the first section 212a, which is beneficial to reduce the space occupied by the third section 212c.

[0138] In some embodiments, the conductive layer 21 is made of a conductive material, and the conductive layer 21 optionally includes a metal foil. The metal foil optionally includes an aluminum foil, a copper foil, etc.

[0139] In some embodiments, the conductive layer 21 is made of a conductive material and a substrate, and the conductive material covers the surface of the substrate.

[0140] Referring to Figure 5 and Figure 6 In some embodiments, the conductive layer 21 includes a substrate layer 21a and a conductive sub-layer 21b. The substrate layer 21a is connected to the first adhesive layer 22, and the conductive sub-layer 21b is connected to the side of the substrate layer 21a away from the first adhesive layer 22, which is beneficial to adhere the conductive layer 21 to the first adhesive layer 22.

[0141] In some embodiments, the conductive sub-layer 21b is electroplated on the side of the substrate layer 21a away from the first adhesive layer 22.

[0142] In some embodiments, the substrate layer 21a includes one of polyethylene terephthalate (PET), polycarbonate (PC) and aramid.

[0143] In some embodiments, the conductive sub-layer 21b includes one of aluminum, copper and nickel.

[0144] In some embodiments, the thickness h1 of the substrate layer 21a satisfies 0.008mm≤h1≤0.05mm. If h1 is less than 0.008mm, the thickness of the substrate layer 21a is too thin to support the conductive sub-layer 21b, and if h1 is greater than 0.05mm, the thickness of the substrate layer 21a is too thick to increase the occupied space. By limiting 0.008mm≤h1≤0.05mm, the conductive sub-layer 21b can be supported and the occupied space of the substrate layer 21a can be reduced.

[0145] Optionally, h1 (in mm) can be any one of 0.008, 0.009, 0.01, 0.011, 0.012, 0.013, 0.014, 0.015, 0.016, 0.017, 0.018, 0.019, 0.02, 0.021, 0.022, 0.023, 0.024, 0.025, 0.026, 0.027, 0.028, 0.029, 0.03, 0.031, 0.032, 0.033, 0.034, 0.035, 0.036, 0.037, 0.038, 0.039, 0.04, 0.041, 0.042, 0.043, 0.044, 0.045, 0.046, 0.047, 0.048, 0.049, 0.05.

[0146] In some embodiments, the thickness h2 of the conductive sub-layer 21b satisfies 0.002 mm≤h2≤0.02 mm. If h2 is less than 0.002 mm, the thickness of the conductive sub-layer 21b is too thin, the conductive effect is poor, the adhesion weakening effect of the second adhesive layer 23 is poor, and the disassembly of the battery 10 is affected. If h2 is greater than 0.02 mm, the thickness of the conductive sub-layer 21b is too thick, which increases the occupied space. By limiting 0.002 mm≤h2≤0.02 mm, the conductive effect of the conductive sub-layer 21b can be ensured, and the space occupied by the conductive sub-layer 21b can be reduced.

[0147] Optionally, h2 (in mm) can be any one of 0.002, 0.003, 0.004, 0.005, 0.006, 0.007, 0.008, 0.009, 0.01, 0.011, 0.012, 0.013, 0.014, 0.015, 0.016, 0.017, 0.018, 0.019, 0.02.

[0148] Please refer to Figures 6 to 11 In some embodiments, the first adhesive layer 22 includes a second body 221 and a second extension section 222 connected to the second body 221. Along the thickness direction of the first adhesive layer 22, one side of the second body 221 is connected to the first body 211, and the other side is connected to the first side wall 113. Along the thickness direction of the first adhesive layer 22, one side of the second extension section 222 is connected to the first extension section 212, and the other side is connected to the first sealing portion 101. Along the second direction Y, the projection of the first body 211, the projection of the second body 221, and the projection of the second adhesive layer 23 are all located within the projection range of the first side wall 113, which increases the area of the first adhesive layer 22 connected to the battery 10, improves the connection strength of the first adhesive layer 22 and the battery 10, and reduces the space occupied in the second direction Y.

[0149] In some embodiments, the thickness h3 of the first adhesive layer 22 satisfies 0.01mm ≤ h3 ≤ 0.05mm. If h3 is less than 0.01mm, the thickness of the first adhesive layer 22 is too thin, resulting in weak adhesion; if h3 is greater than 0.05mm, the thickness of the first adhesive layer 22 is too thick, increasing the space occupied. By limiting the thickness to 0.01mm ≤ h3 ≤ 0.05mm, the adhesion effect of the first adhesive layer 22 can be improved, and the space occupied by the first adhesive layer 22 can be reduced.

[0150] Optionally, h3 (in mm) can be 0.01, 0.011, 0.012, 0.013, 0.014, 0.015, 0.016, 0.017, 0.018, 0.019, 0.02, 0.021, 0.022, 0.023, 0.024, 0.025, 0.026, 0.027, 0.028, or 0.0 Any one of the following: 29, 0.03, 0.031, 0.032, 0.033, 0.034, 0.035, 0.036, 0.037, 0.038, 0.039, 0.04, 0.041, 0.042, 0.043, 0.044, 0.045, 0.046, 0.047, 0.048, 0.049, 0.05.

[0151] Please see Figures 6 to 11 In some embodiments, the adhesive 20 includes an insulating layer 24 that covers the side of the first segment 212a and the second segment 212b away from the second extension segment 222. This can reduce the risk of short circuit caused by the conductive layer 21 contacting the battery compartment 201. If the conductive layer 21 contacts the battery compartment 201, during the power-on process, the part of the conductive layer 21 that contacts the battery compartment 201 will short circuit the second adhesive layer 23, and the current cannot pass through the second adhesive layer 23, resulting in the inability to weaken or eliminate the adhesiveness of the second adhesive layer 23.

[0152] In some embodiments, the insulating layer 24 covers the side of the first segment 212a and the second segment 212b away from the second extension segment 222, and covers part of the side of the third segment 212c away from the second extension segment 222. The side of the third segment 212c away from the second extension segment 222 is partially exposed to the insulating layer 24, which can further reduce the risk of short circuit caused by contact between the conductive layer 21 and the battery compartment 201.

[0153] Please see Figures 12 to 15In some embodiments, along the second direction Y, the projection of the insulating layer 24 overlaps with the projection of the second adhesive layer 23, that is, the end of the second adhesive layer 23 close to the first sealing portion 101 overlaps with the projection of the insulating layer 24, and the insulating layer 24 covers the junction of the conductive layer 21 exposed to the second adhesive layer 23. Due to the fitting tolerance, a gap is likely to occur between the insulating layer 24 and the second adhesive layer 23, and the conductive layer 21 in the gap is likely to be short-circuited with the battery compartment 201. By partially overlapping the insulating layer 24 and the second adhesive layer 23, the generation of the gap can be reduced, and the risk of short-circuit caused by the contact between the conductive layer 21 and the battery compartment 201 can be further reduced.

[0154] Please refer to Figure 12 In some embodiments, the insulating layer 24 covers part of the second adhesive layer 23. The part of the second adhesive layer 23 is located between the insulating layer 24 and the conductive layer 21.

[0155] Please refer to Figure 15 In some embodiments, the second adhesive layer 23 covers part of the insulating layer 24. The part of the insulating layer 24 is located between the second adhesive layer 23 and the conductive layer 21.

[0156] In some embodiments, along the second direction Y, the width L1 of the overlapping part of the insulating layer 24 and the second adhesive layer 23 satisfies 0 < L1 < 2 mm, so that insulation can be achieved and the thickness space occupied by the overlapping part can be reduced.

[0157] In some embodiments, the thickness h4 of the insulating layer 24 satisfies 0.005 mm ≤ h4 ≤ 0.05 mm. If h4 is less than 0.005 mm, the insulating layer 24 is too thin, which affects the insulation effect, and if h4 is greater than 0.05 mm, the thickness of the insulating layer 24 is too thick, which increases the occupied space. By limiting 0.005 mm ≤ h4 ≤ 0.05 mm, the conductive effect of the insulating layer 24 can be ensured, and the space occupied by the insulating layer 24 can be reduced.

[0158] Alternatively, h4 (unit: mm) can be any one of 0.005, 0.006, 0.007, 0.008, 0.009, 0.01, 0.011, 0.012, 0.013, 0.014, 0.015, 0.016, 0.017, 0.018, 0.019, 0.02, 0.021, 0.022, 0.023, 0.024, 0.025, 0.026, 0.027, 0.028, 0.029, 0.03, 0.031, 0.032, 0.033, 0.034, 0.035, 0.036, 0.037, 0.038, 0.039, 0.04, 0.041, 0.042, 0.043, 0.044, 0.045, 0.046, 0.047, 0.048, 0.049, 0.05.

[0159] In some embodiments, the material of the insulation layer 24 includes polyethylene terephthalate (PET) or polyimide (PI).

[0160] Referring to Figure 6 In some embodiments, the second adhesive layer 23 includes a third body 231, one side of the third body 231 is connected with the first body 211 along the second direction Y, and the other side is used to be connected with the battery compartment 201. Along the second direction Y, the projection of the first body 211, the projection of the second body 221 and the projection of the third body 231 are all located within the projection of the first side wall 113. The projection of the insulation layer 24 overlaps with the projection of the third body 231.

[0161] Referring to Figure 16 In some embodiments, the second adhesive layer 23 includes a third body 231 and a third extension segment 232 connected with the third body 231. One side of the third body 231 is connected with the first body 211 along the second direction Y, and the other side is used to be connected with the battery compartment 201. Along the second direction Y, the projection of the first body 211, the projection of the second body 221 and the projection of the third body 231 are all located within the projection of the first side wall 113.

[0162] In some embodiments, the third extension segment 232 includes a fourth segment 232a, one side of the fourth segment 232a is connected with the first segment 212a along the second direction Y, and the projection of the insulation layer 24 overlaps with the projection of the fourth segment 232a.

[0163] In some embodiments, the third extension segment 232 includes a fourth segment 232a, a fifth segment 232b and a sixth segment 232c connected in sequence. The fourth segment 232a is connected with the third body 231, one side of the fourth segment 232a is connected with the first segment 212a, one side of the fifth segment 232b is connected with the second segment 212b, one side of the sixth segment 232c is connected with the third segment 212c, and the third segment 212c is at least partially exposed from the sixth segment 232c.

[0164] In some embodiments, the insulation layer 24 covers one side of the fourth segment 232a and the fifth segment 232b away from the first extension segment 212. Since there is a gap between the first sealing portion 101 and the inner wall of the battery compartment 201, the second adhesive layer 23 is easy to adsorb dust, debris and other impurities. By covering the fourth segment 232a and the fifth segment 232b with the insulation layer 24, the adsorption of dust, debris and other impurities on the second adhesive layer 23 can be reduced.

[0165] In some embodiments, the insulation layer 24 covers one side of the fourth segment 232a, the fifth segment 232b and the sixth segment 232c away from the first extension segment 212. The adsorption of dust, debris and other impurities on the second adhesive layer 23 can be further reduced.

[0166] In some embodiments, the thickness h5 of the second adhesive layer 23 satisfies 0.025mm≤h5≤0.1mm. If h5 is less than 0.025mm, the thickness of the second adhesive layer 23 is too thin, which affects the effect of fixing the battery 10 to the battery compartment 201. If h5 is greater than 0.1mm, the thickness of the second adhesive layer 23 is too thick, which increases the occupied space. By limiting 0.025mm≤h5≤0.1mm, the fixing effect of the second adhesive layer 23 can be ensured, and the occupied space of the second adhesive layer 23 can be reduced.

[0167] Optionally, h5 (unit: mm) can be any one of 0.025, 0.026, 0.027, 0.028, 0.029, 0.03, 0.031, 0.032, 0.033, 0.034, 0.035, 0.036, 0.037, 0.038, 0.039, 0.04, 0.041, 0.042, 0.043, 0.044, 0.045, 0.046, 0.047, 0.048, 0.049, 0.05, 0.052, 0.054, 0.056, 0.058, 0.06, 0.062, 0.064, 0.066, 0.068, 0.07, 0.072, 0.074, 0.076, 0.078, 0.08, 0.082, 0.084, 0.086, 0.088, 0.09, 0.092, 0.094, 0.096, 0.098, 0.1.

[0168] Please refer to Figure 7 and Figure 11 In some embodiments, the battery 10 comprises a first protective layer 13, the first protective layer 13 is connected to the first side wall 113, the first sealing portion 101 and the second side wall 114, and the tab 12 and at least part of the first sealing portion 101 are located in the first protective layer 13. The first adhesive layer 22 is connected to the first protective layer 13. In the second direction Y, the projection of the insulating layer 24 on the first side wall 113 is separated from the projection of the first protective layer 13 on the first side wall 113, reducing the overlap between the insulating layer 24 and the first protective layer 13, reducing the thickness space occupied, and being conducive to reducing the thickness of the battery 10.

[0169] In some embodiments, the battery 10 comprises a protective plate 14, the protective plate 14 is connected to the tab 12, and the protective plate 14 is arranged in the first protective layer 13.

[0170] In some embodiments, the battery 10 comprises an elastic member 14a, the elastic member 14a is arranged on the top wall 111, and the protective plate 14 is connected to the elastic member 14a. The elastic member 14a can buffer the protective plate 14 in the first direction X.

[0171] Please refer to Figure 17In some embodiments, the battery 10 includes a connector 15 located in the packaging bag 11, the connector 15 connecting the electrode assembly and the tab 12. In the second direction Y, the projection of the connector 15 is separated from the projection of the insulation layer 24, reducing the overlap between the insulation layer 24 and the connector 15, reducing the occupied thickness space, and facilitating the reduction of the thickness of the battery 10.

[0172] Referring to Figure 8 In some embodiments, the battery 10 includes a second protective layer 16 connected from the first side wall 113, through the bottom wall 112, to the second side wall 114. The second protective layer 16 connects part of the first side wall 113, the bottom wall 112, and part of the second side wall 114. The second protective layer 16 connects part of the third side wall 115 and the fourth side wall 116.

[0173] Referring to Figures 18 to 20 In some embodiments, the battery assembly 100 includes two adhesive members 20, which are spaced apart in the third direction Z when viewed in the second direction Y. The third section 212c of each adhesive member 20 extends to the side of the first sealing portion 101 away from the first side wall 113 to connect an external power source. Each adhesive member 20 is arranged at different positions of the same battery compartment 201 to adapt to different structures of the battery compartment 201.

[0174] Referring to Figure 25 In some embodiments, the battery assembly 100 includes a protective film 100a attached to the side of the second adhesive layer 23 away from the first adhesive layer 22 to reduce the adhesion of foreign matter to the second adhesive layer 23 during the manufacturing process of the battery 10.

[0175] In some embodiments, the protective film 100a includes a tear-off portion 110 protruding from the packaging bag 11 to facilitate the tearing of the protective film 100a.

[0176] Referring to Figures 21 to 24 The second embodiment of the present application provides a battery assembly 100, part of the conductive layer 21 extends to the side of the second side wall 114 away from the first side wall 113 through the bottom wall 112.

[0177] In some embodiments, in the thickness direction of the first adhesive layer 22, one side of the second body 221 connects the first side wall 113. The second extension section 222 extends to the side of the second side wall 114 away from the first side wall 113, and one side of the second extension section 222 connects the first side wall 113, the bottom wall 112, and the second side wall 114.

[0178] In some embodiments, the first body 211 is connected to the second body 221 at a side facing away from the packaging bag 11, and the first extension 212 is connected to the second extension 222 at a side facing away from the packaging bag 11. The first extension 212 extends partially to a side of the second side wall 114 facing away from the first side wall 113 to connect an external power source. Specifically, the first section 212a is connected to the first side wall 113, the second section 212b is connected to the bottom wall 112, and the third section 212c is connected to the second side wall 114.

[0179] In some embodiments, the second adhesive layer 23 includes a third body 231 connected to the first body 211 at one side in the second direction Y and configured to be connected to the battery compartment 201 at the other side. In the second direction Y, the projection of the first body 211, the projection of the second body 221, and the projection of the third body 231 are all located within the projection of the first side wall 113.

[0180] In some embodiments, the second adhesive layer 23 includes a third body 231 and a third extension 232 connected to the third body 231. The third extension 232 includes a fourth section 232a connected to the first section 212a at one side in the second direction Y, and the projection of the insulating layer 24 overlaps the projection of the fourth section 232a.

[0181] In some embodiments, the third extension 232 extends partially to a side of the second side wall 114 facing away from the first side wall 113, and the third extension 232 includes the fourth section 232a, the fifth section 232b, and the sixth section 232c connected in sequence. The fourth section 232a is connected to the third body 231, the fourth section 232a is connected to the first section 212a at one side, the fifth section 232b is connected to the second section 212b at one side, the sixth section 232c is connected to the third section 212c at one side, and the third section 212c is at least partially exposed from the sixth section 232c.

[0182] In some embodiments, the insulating layer 24 extends partially to a side of the second side wall 114 facing away from the first side wall 113, and the insulating layer 24 covers at least the first section 212a and the second section 212b. At least part of the side of the third section 212c facing away from the second extension 222 is exposed from the insulating layer 24.

[0183] In some embodiments, in the first direction X, the two second sealing portions 102 protrude from the bottom wall 112, and the second section 212b is located between the two second sealing portions 102. The space formed by the bottom wall 112 and the portions of the two second sealing portions 102 protruding from the bottom wall 112 can reduce the space occupied by the first extension 212 in the first direction X.

[0184] In some embodiments, the second section 212b protrudes the bottom wall 112 in the first direction X by a height smaller than the second sealing portion 102 protrudes the bottom wall 112, which can further reduce the space occupied by the first extension section 212 in the first direction X.

[0185] In some embodiments, the second protective layer 16 is provided with a first opening 161 on one side of the first side wall 113, and the first section 212a is arranged in the first opening 161, which can reduce the thickness space occupied by the first section 212a.

[0186] In some embodiments, the second protective layer 16 protrudes the first side wall 113 in the second direction Y by a height greater than the first section 212a protrudes the first side wall 113, which can further reduce the thickness space occupied by the first section 212a.

[0187] In some embodiments, the second protective layer 16 is provided with a second opening 162 on one side of the second side wall 114, and at least part of the third section 212c is arranged in the second opening 162, which can reduce the thickness space occupied by the third section 212c.

[0188] In some embodiments, the second protective layer 16 protrudes the second side wall 114 in the second direction Y by a height greater than the third section 212c protrudes the second side wall 114, which can further reduce the thickness space occupied by the third section 212c.

[0189] Please refer to Figures 26 to 29 The third embodiment of the present application provides a battery assembly 100, the bonding member 20 includes a first connecting section 210, the first connecting section 210 extends to one side of the second side wall 114 or the first sealing portion 101 away from the first side wall 113, and the first connecting section 210 is provided with an exposure hole 210a, and the conductive layer 21 is exposed to the exposure hole 210a. The positive electrode of the external circuit is connected to the conductive layer 21 through the exposure hole 210a, and the negative electrode is connected to the battery compartment 201, or the negative electrode of the external circuit is connected to the conductive layer 21 through the exposure hole 210a, and the positive electrode is connected to the battery compartment 201. By setting the form of the exposure hole 210a to expose the conductive layer 21, the manufacturing process is optimized, the first adhesive layer 22, the conductive layer 21 and the third adhesive layer 23 are compounded into the bonding member 20, the risk of short circuit caused by the electrical connection between the first connecting section 210 and the external conductive member is reduced, and the structural strength of the first connecting section 210 is improved, and the first connecting section 210 can be forced to take out the battery 10 from the battery compartment 201 when necessary.

[0190] In some embodiments, the first adhesive layer 22, the conductive layer 21 and the second adhesive layer 23 located in the first connecting section 210 are arranged in the second direction Y in sequence, and the first adhesive layer 22 is connected to one side of the second side wall 114 or the first sealing portion 101 away from the first side wall 113. In the second direction Y, the exposure hole 210a penetrates the second adhesive layer 23.

[0191] In some embodiments, the first adhesive layer 22, the conductive layer 21, and the second adhesive layer 23 located in the first connecting section 210 are flush at the ends thereof in the first direction X and / or the third direction Z.

[0192] In some embodiments, the conductive layer 21 located in the first connecting section 210 is within the projection of the second adhesive layer 23 along the second direction Y in the first direction X and / or the third direction Z.

[0193] In some embodiments, the insulating member 24 is connected to the second adhesive layer 23, and the first adhesive layer 22, the conductive layer 21, the second adhesive layer 23, and the insulating member 24 located in the first connecting section 210 are arranged in sequence along the second direction Y. The exposed hole 210a penetrates through the second adhesive layer 23 and the insulating member 24 along the second direction Y, and the insulating member 24 can reduce the risk of short circuit caused by the contact between the conductive layer 21 and the battery compartment 201.

[0194] In some embodiments, the first adhesive layer 22, the conductive layer 21, the second adhesive layer 23, and the insulating layer 24 located in the first connecting section 210 are flush at the ends thereof in the first direction X and / or the third direction Z, reducing the risk of short circuit caused by the contact between the conductive layer 21 and the battery compartment 201.

[0195] In some embodiments, the conductive layer 21 located in the first connecting section 210 is within the projection of the second adhesive layer 23 and the insulating layer 24 along the second direction Y in the first direction X and / or the third direction Z, reducing the risk of short circuit caused by the contact between the conductive layer 21 and the battery compartment 201.

[0196] In some embodiments, the insulating member 24 extends to the ends of the first adhesive layer 22, the conductive layer 21, and the second adhesive layer 23, and the insulating member 24 covers the conductive layer 21, which is conducive to reducing the risk of short circuit caused by the contact between the conductive layer 21 and the battery compartment 201.

[0197] Please refer to Figure 30 and Figure 31 In some embodiments, the exposed hole 210a can be polygonal, circular, elliptical, or the like. Optionally, the exposed hole 210a is rectangular. Optionally, the exposed hole 210a is circular. It can be understood that the shape of the exposed hole 210a is not limited to the above definition, and it is only necessary to facilitate the connection of the external circuit.

[0198] Taking the exposed hole 210a as an example, the first width d1 of the first connecting section 210 in the third direction Z is d1≥2mm, and the second width d2 of the exposed hole 210a is d1-d2≥1mm.

[0199] In some embodiments, the third width d3 of the exposed hole 210a along the first direction X is greater than or equal to 2 mm.

[0200] In some embodiments, the minimum distance d4 of the exposed hole 210a to the edge of the first connecting section 210 along the first direction X is greater than or equal to 0.5 mm.

[0201] Referring to Figures 26 to 29 In some embodiments, the adhesive member 20 comprises a second connecting section 220, and the battery 10 is located between the second connecting section 220 and the first connecting section 210 along the second direction Y. The second adhesive layer 23, the conductive layer 21, and the first adhesive layer 22 located in the second connecting section 220 are arranged in sequence along the second direction Y. The first adhesive layer 22 located in the second connecting section 220 is connected to the first side wall 113. The second adhesive layer 23 located in the second connecting section 220 is connected to the battery compartment 201.

[0202] Referring to Figure 32 In some embodiments, the width of the first connecting section 210 is substantially the same as the width of the second connecting section 220. For example, the difference between the width of the first connecting section 210 and the width of the second connecting section 220 is less than 0.1 mm.

[0203] Referring to Figures 26 to 29 In some embodiments, the adhesive member 20 comprises a third connecting section 230, and the third connecting section 230 connects the first connecting section 210 and the second connecting section 220. The second adhesive layer 23, the conductive layer 21, and the first adhesive layer 22 located in the third connecting section 230 are arranged in sequence along the first direction X.

[0204] In some embodiments, the insulating member 24 is connected to the second adhesive layer 23 located in the third connecting section 230 along the first direction X, and the insulating member 24 is located between the second adhesive layer 23 and the battery compartment 201.

[0205] In some embodiments, the third connecting section 230 is connected to the bottom wall 112 and is located between the bottom wall 112 and the battery compartment 201.

[0206] In some embodiments, the third connecting section 230 is connected to the third side wall 115 and is located between the third side wall 115 and the battery compartment 201.

[0207] In some embodiments, the third connecting section 230 is connected to the fourth side wall 116 and is located between the fourth side wall 116 and the battery compartment 201.

[0208] In some embodiments, the third connecting section 230 is located between the protective plate 14 and the battery compartment 201.

[0209] Referring to Figure 27In some embodiments, the first body 211 connects the second body 221 and the third body 231, and forms the second connecting section 220.

[0210] In some embodiments, the first extending section 212 connects the second extending section 222 and the third extending section 232, and forms the first connecting section 210 and the third connecting section 230.

[0211] Referring to Figure 33 In some embodiments, in the third direction Z and / or the first direction X, the projection of the conductive layer 21 along the second direction Y is within the projection of the second adhesive layer 23 along the second direction Y, which reduces the risk of the conductive layer 21 contacting the battery compartment 201 and causing short circuit.

[0212] In some embodiments, in the third direction Z, the second adhesive layer 23 comprises a first edge 23a and a second edge 23b, and in the second direction Y, the projection of the conductive layer 21 is between the projection of the first edge 23a and the projection of the second edge 23b.

[0213] In some embodiments, in the third direction Z, the minimum distance w1 between the first edge 23a and the edge of the conductive layer 21 is 0≤w1≤3mm, which is conducive to reducing the risk of the conductive layer 21 contacting the battery compartment 201 and causing short circuit. Optionally, w1 can be any one of 0mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm or a range consisting of any two of them.

[0214] In some embodiments, in the third direction Z, the minimum distance w2 between the second edge 23b and the edge of the conductive layer 21 is 0≤w2≤3mm, which is conducive to reducing the risk of the conductive layer 21 contacting the battery compartment 201 and causing short circuit. Optionally, w2 can be any one of 0mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm or a range consisting of any two of them.

[0215] Referring to Figure 26 In some embodiments, the first sealing part 101, the protection plate 14 and the first connecting section 210 are arranged along the second direction Y, the protection plate 14 is located on the side of the first sealing part 101 away from the first side wall 113, and the first connecting section 210 connects the side of the protection plate 14 away from the first sealing part 101. In the first direction X, the first connecting section 210 does not exceed the packaging bag 11 in the second direction Y, which is conducive to reducing the space occupied by the adhesive piece 20 in the thickness direction of the battery 10 and improving the space utilization.

[0216] Referring to Figure 34In some embodiments, the protection plate 14 is located on the side of the first sealing part 101 away from the first side wall 113, the first connecting section 210 connects the side of the protection plate 14 away from the first sealing part 101, the protection plate 14 is provided with a notch part 141, and part of the adhesive 20 is arranged in the notch part 141. When viewed along the second direction Y, the adhesive 20 does not protrude beyond the protection plate 14 along the first direction X, which is conducive to reducing the space occupied by the adhesive 20 along the first direction X and improving the space utilization. Optionally, part of the third connecting section 230 is arranged in the notch part 141.

[0217] In some embodiments, the thickness of the adhesive 20 is less than the depth of the notch part 141 along the first direction X, thereby reducing the space occupied by the adhesive 20 along the first direction X.

[0218] Referring to Figure 27 In some embodiments, when the width of the first connecting section 210 is substantially the same as the width of the second connecting section 220, the first connecting section 210 connects the second side wall 114, the second connecting section 220 connects the first side wall 113, the adhesive 20 forms a containing space 103 with the battery 10, the protection plate 14 is arranged in the containing space 103, and the adhesive 20 covers the protection plate 14 and the first sealing part 101, thereby insulating and protecting the protection plate 14 and the first sealing part 101.

[0219] In some embodiments, along the first direction X, the protection plate 14 is located between the top wall 111 and the third connecting section 230, and along the second direction Y, the protection plate 14 is located between the second connecting section 220 and the first connecting section 210.

[0220] Referring to Figure 28 In some embodiments, the third connecting section 230 connects the bottom wall 112, and the first connecting section 210 connects the third connecting section 230 and extends to the second side wall 114.

[0221] In some embodiments, the third connecting section 230 connects the third side wall 115 or the fourth side wall 116, and the first connecting section 210 connects the third connecting section 230 and extends to the second side wall 114.

[0222] In some embodiments, the battery assembly 100 comprises insulating glue, the insulating glue is coated on the end face of the first connecting section 210 away from the third connecting section 230, and the insulating glue at least covers the conductive layer 21 exposed on the end face, which is conducive to reducing the risk of short circuit caused by the contact between the conductive layer 21 and the battery compartment 201 or other elements.

[0223] Referring to Figure 35The application also provides a power consuming device 300 using the above battery assembly 100. The power consuming device 300 comprises a battery compartment 201, and the second adhesive layer 23 is connected to the battery compartment 201, and is configured to be weakened or disappear in adhesion when electricity is conducted between the conductive layer 21 and the battery compartment 201. In an embodiment, the power consuming device 300 of the application can be, but is not limited to, various electronic devices.

[0224] Those skilled in the art should understand that the above embodiments are only used to illustrate the application, and are not used as limitations to the application, and as long as the above embodiments are appropriately changed and varied within the spirit and principles of the application, they all fall within the scope of the application.

Claims

1. A battery assembly comprising a battery and an adhesive member configured to adhesively bond the battery to an external battery compartment, the battery comprising a packaging bag and tabs, the packaging bag comprising a top wall, a bottom wall, a first side wall, and a second side wall, the top wall and the bottom wall being arranged along a first direction, the first side wall and the second side wall being arranged along a second direction, the first side wall connecting the top wall and the bottom wall, the second side wall connecting the top wall and the bottom wall, the packaging bag comprising a first sealing portion connected to the top wall, the tabs extending from the first sealing portion, the first direction being perpendicular to the second direction, the second direction being the thickness direction of the battery, characterized in that... The adhesive component includes: The first adhesive layer connects to the first sidewall; The second adhesive layer is configured to connect to the external battery compartment; A conductive layer, wherein one side of the conductive layer is connected to the first adhesive layer, and the other side is at least partially connected to the second adhesive layer; The conductive layer includes a first body and a first extension connected to the first body. The first body is connected to the first sidewall, and the first extension extends to the second sidewall or the side of the first sealing portion away from the first sidewall. The second adhesive layer is configured to reduce or eliminate adhesion when energized between the conductive layer and the external battery compartment.

2. The battery assembly as claimed in claim 1, characterized in that, Along the second direction, the projection of the first body is located within the projection range of the first sidewall. The first extension includes a first section, a second section, and a third section connected in sequence. The first section is connected to the first body. The first section is located on the side of the first sealing portion near the first sidewall. The second section is located on the side of the first sealing portion away from the top wall. The third section is located on the side of the first sealing portion away from the first sidewall, and at least a portion of the third section is exposed in the battery. Along the first direction, the projections of the first section, the second section, and the third section are all located within the projection range of the top wall.

3. The battery assembly as described in claim 2, characterized in that, The first adhesive layer includes a second body and a second extension connected to the second body. One side of the second body is connected to the first body, and the other side of the second body is connected to the first sidewall. One side of the second extension is connected to the first extension, and the other side of the second extension is connected to the first sealing part. Along the second direction, the projections of the first body, the second body, and the second adhesive layer are all located within the projection range of the first sidewall.

4. The battery assembly as described in claim 3, characterized in that, The adhesive further includes an insulating layer that covers the side of the first segment and the second segment away from the second extension segment, and the side of the third segment away from the second extension segment is at least partially exposed to the insulating layer. Along the second direction, the projection of the insulating layer overlaps with the projection of the second adhesive layer.

5. The battery assembly as claimed in claim 4, characterized in that, Along the second direction, the width L1 of the overlapping portion of the insulating layer and the second adhesive layer satisfies 0 < L1 < 2 mm.

6. The battery assembly as claimed in claim 4, characterized in that, The second adhesive layer includes a third body, one side of which is connected to the first body, and the other side of which is used to connect to the battery compartment. Along the second direction, the projections of the first body, the second body, and the third body are all located within the projection range of the first sidewall, and the projection of the insulating layer overlaps with the projection of the third body.

7. The battery assembly as claimed in claim 4, characterized in that, The second adhesive layer includes a third body and a third extension. One side of the third body is connected to the first body, and the other side of the third body is used to connect to the battery compartment. Along the second direction, the projections of the first body, the second body, and the third body are all located within the projection range of the first sidewall. The third extension includes a fourth segment, a fifth segment, and a sixth segment connected in sequence. The fourth segment is connected to the third body. One side of the fourth segment is connected to the first segment. One side of the fifth segment is connected to the second segment. One side of the sixth segment is connected to the third segment. The third segment is at least partially exposed to the sixth segment. The insulating layer covers the fourth segment, the fifth segment, and the sixth segment on the side away from the first extension.

8. The battery assembly as claimed in claim 4, characterized in that, The battery further includes a first protective layer, which connects the first sidewall, the first sealing portion, and the second sidewall. The tab and at least a portion of the first sealing portion are located within the first protective layer. The first adhesive layer connects to the first protective layer. Along the second direction, the projection of the insulating layer on the first sidewall is separate from the projection of the first protective layer on the first sidewall.

9. The battery assembly as claimed in claim 4, characterized in that, The battery includes an electrode assembly and an adapter disposed within the packaging bag. The adapter connects the electrode assembly and the tab. Along the second direction, the projection of the insulating layer is separate from the projection of the adapter.

10. The battery assembly as claimed in claim 1, characterized in that, The conductive layer includes a base layer and a conductive sublayer. The base layer is connected to the first adhesive layer, and the conductive sublayer is connected to the side of the base layer opposite to the first adhesive layer.

11. The battery assembly as claimed in claim 1, characterized in that, The battery assembly includes two adhesive members, which are spaced apart in a third direction when viewed along the second direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

12. The battery assembly as claimed in claim 1, characterized in that, The adhesive includes a first connecting segment that extends to the second sidewall or the side of the first sealing portion opposite to the first sidewall. The first connecting segment has an exposure hole through which the conductive layer is exposed.

13. The battery assembly as claimed in claim 12, characterized in that, The adhesive includes an insulating layer. Along the second direction, the first adhesive layer, the conductive layer, the second adhesive layer, and the insulating layer located in the first connecting segment are stacked in sequence. The first adhesive layer located in the first connecting segment is connected to the second sidewall or the side of the first sealing portion away from the first sidewall. The exposure hole penetrates the second adhesive layer and the insulating layer along the second direction.

14. The battery assembly as claimed in claim 13, characterized in that, In the first direction, the projection of the conductive layer located in the first connecting segment along the second direction is located within the projection of the second adhesive layer and the insulating layer along the second direction, or is flush with the ends of the first adhesive layer, the conductive layer, the second adhesive layer and the insulating layer in the first connecting segment.

15. The battery assembly as claimed in claim 13, characterized in that, The adhesive includes a second connecting segment. Along the second direction, the battery is located between the second connecting segment and the first connecting segment. Along the second direction, the second adhesive layer, the conductive layer, and the first adhesive layer located in the second connecting segment are stacked sequentially. The first adhesive layer located in the second connecting segment is connected to the first sidewall.

16. The battery assembly as claimed in claim 12, characterized in that, In the first direction and / or the third direction, the projection of the conductive layer along the second direction lies within the projection of the second adhesive layer along the second direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

17. The battery assembly as claimed in claim 15, characterized in that, The battery also includes a protection plate disposed on the top wall and connected to the tabs. The adhesive covers the protection plate and the first sealing part. The first connecting section is connected to the second side wall, and the second connecting section is connected to the first side wall.

18. The battery assembly as claimed in claim 12, characterized in that, The battery also includes a protection plate disposed on the top wall and connected to the tab. The first sealing portion extends along the first direction, and along the second direction, the protection plate is located on the side of the first sealing portion away from the first side wall. The first connecting section extends to the side of the protection plate away from the first sealing portion.

19. An electrical appliance, characterized in that, The device includes a battery assembly as described in any one of claims 1 to 18, wherein the electrical device includes a battery compartment, the second adhesive layer is connected to the battery compartment, and the second adhesive layer is configured to reduce or eliminate adhesion when energized between the conductive layer and the battery compartment.

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