Battery and electric equipment

Abstract

The utility model discloses a battery and electric equipment. The battery comprises a battery cell, a protection plate assembly and a first bonding piece, the battery cell comprises an electrode assembly, a packaging bag and a plurality of tabs. The packaging bag comprises a main body part and a packaging part. The main body part comprises a top wall, the packaging part comprises a first packaging edge, and the first packaging edge is connected to the top wall. Each tab comprises a first connecting part extending out of the first packaging edge; the protection plate assembly comprises a substrate and an electronic element, the substrate and the first packaging edge are oppositely arranged in the second direction, and the electronic element is connected to the side, facing the first packaging edge, of the substrate. The first bonding piece comprises a first bonding part and a plurality of second bonding parts, the first bonding part is bonded to the first packaging edge, and each first connecting part extends to the position between the substrate and one second bonding part and is electrically connected to the substrate. In the second direction, the projection of the electronic component is located in the projection of the first bonding part and is not overlapped with the projection of the second bonding part. The battery is favorable for improving the energy density.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a battery and electrical equipment. Background Art

[0002] The battery includes a battery cell and a protection plate assembly. In the existing battery structure, the protection plate assembly needs to be fixed by injection molding on the head of the battery cell, which causes the injection molded part to occupy a large space and waste space, thus affecting the energy density of the battery. Utility Model Content

[0003] In view of the above situation, it is necessary to provide a battery that is conducive to improving energy density.

[0004] An embodiment of the present application provides a battery, including a battery cell, a protective plate assembly and a first adhesive. The battery cell includes an electrode assembly, a packaging bag and a plurality of tabs. The packaging bag includes a main body and a packaging part, and the electrode assembly is accommodated in the main body. The main body includes a top wall, and the packaging part includes a first packaging edge, the first packaging edge is connected to the top wall and extends along a first direction, and the first packaging edge and the top wall are arranged oppositely along a second direction. The first direction is the thickness direction of the battery cell, and the second direction is perpendicular to the first direction. A plurality of tabs are electrically connected to the electrode assembly, and each tab includes a first connecting portion extending from the first packaging edge. The protective plate assembly includes a substrate and an electronic component, the substrate and the first packaging edge are arranged oppositely along the second direction, and the electronic component is connected to a side of the substrate facing the first packaging edge. The first adhesive includes a first adhesive portion and a plurality of second adhesive portions convexly arranged on one side of the first adhesive portion, and the side of the first adhesive portion facing away from the second adhesive portion is bonded to the side of the first packaging edge facing the substrate, and each first connecting portion extends between the substrate and a second adhesive portion and is electrically connected to the substrate. Along the second direction, the projection of the electronic component is located within the projection of the first adhesive component and does not overlap with the projection of the second adhesive portion.

[0005] In the above-mentioned battery, the electronic component is connected to the side of the substrate facing the first packaging edge to reduce the risk of the electronic component being directly impacted by external force. The second adhesive portion is used to support the substrate through the first connecting portion so that a gap is formed between the area of ​​the first adhesive portion where the second adhesive portion is not provided and the substrate. Along the second direction, the projection of the electronic component is located within the projection of the first adhesive and does not overlap with the projection of the second adhesive, so that the gap is used as a layout space for the electronic component on the substrate, thereby improving the space utilization of the protection plate assembly and the first packaging edge on the top wall, which is beneficial to improving the energy density of the battery.

[0006] In some embodiments of the present application, along the second direction, the thickness of the first adhesive portion is 0.1 mm to 0.3 mm, so as to improve the structural strength of the first adhesive portion and limit the space occupied by the first adhesive portion in the second direction. The thickness of the second adhesive portion is 0.2 mm to 0.6 mm, so as to improve the structural strength of the second adhesive portion and limit the space occupied by the second adhesive portion in the second direction. The height of the gap between the area of ​​the first adhesive portion where the second adhesive portion is not provided and the substrate is 0.6 mm to 1 mm, so that the gap can meet the requirements of the layout space of the electronic components with higher height.

[0007] In some embodiments of the present application, a side of the second adhesive portion facing away from the first adhesive portion is bonded to the first connecting portion to improve the connection strength between the second adhesive portion and the first connecting portion, thereby improving the stability of the support of the second adhesive portion.

[0008] In some embodiments of the present application, the battery further includes a conductive member. The conductive member includes a first section, a second section, and a third section, the first section and the second section are arranged opposite to each other along the second direction, two ends of the third section are respectively connected to the first section and the second section, the side of the first section facing away from the second section is connected to the substrate, and at least part of the first connecting portion is located between the first section and the second section. The side of the second section facing away from the first section is bonded to the second bonding portion to improve the connection strength between the second bonding portion and the conductive member, thereby improving the stability of the support of the second bonding portion.

[0009] In some embodiments of the present application, the protective plate assembly also includes a first flexible circuit board. The first flexible circuit board includes a first connecting section, a second connecting section and a third connecting section connected in sequence, the second connecting section is located on the side of the substrate away from the first adhesive, the second connecting section is arranged opposite to the substrate along the second direction, the first connecting section is connected between the substrate and the second connecting section, the third connecting section extends along the second direction and is provided with a first connector, and the first connector is configured to connect to an external circuit. The main body also includes a first side wall and a second side wall arranged opposite to each other along the first direction, and the first side wall and the second side wall are both connected to the top wall. The battery also includes a second adhesive, the second adhesive includes a first main body and a first extension connected to the first main body, at least a portion of the first main body is bonded to a side of the second connecting section away from the substrate, and at least a portion of the first extension is bonded to the first side wall and / or the second side wall, so as to apply a tensile force to the second connecting section to fix the second connecting section to one side of the substrate.

[0010] In some embodiments of the present application, the battery further includes a third adhesive. The third adhesive includes a second main body and two second extensions connected to both sides of the second main body. At least part of the second main body is bonded to the side of the substrate away from the first adhesive, and at least part of the second main body is bonded to the side of the second connecting section facing the substrate, so as to apply a tensile force to the second connecting section to fix the second connecting section to one side of the substrate. The two second extensions are respectively bonded to the first side wall and the second side wall to apply a tensile force to the second main body so that the second main body fixes the substrate to one side of the first packaging edge, and the two second extensions also shield the gap on both sides in the first direction to reduce the risk of impurities entering the gap and interfering with the electronic components. Along the first direction, the part of the second extension bonded to the first side wall or the second side wall does not overlap with the part of the first extension bonded to the first side wall or the second side wall, so as to reduce the risk of damage caused by concentrated force on the first side wall or the second side wall.

[0011] In some embodiments of the present application, the protective plate assembly also includes a second flexible circuit board. The second flexible circuit board includes a fourth connecting segment, a fifth connecting segment and a sixth connecting segment connected in sequence, the fifth connecting segment is located on the side of the substrate away from the first adhesive, the fifth connecting segment is arranged opposite to the substrate along the second direction, the fourth connecting segment is connected between the substrate and the fifth connecting segment, and the fourth connecting segment and the first connecting segment are arranged at intervals along the third direction. The first direction, the second direction and the third direction are perpendicular to each other. The sixth connecting segment extends along the second direction and is provided with a second connector, and the second connector is configured to connect an external circuit. The first main body includes a first section and a second section arranged along the third direction, the first section is bonded to the second connecting segment, and the second section is bonded to the fifth connecting segment, so that the first main body simultaneously fixes the second connecting segment and the fifth connecting segment to one side of the substrate.

[0012] In some embodiments of the present application, the number of the first extension portions is two, wherein one first extension portion is connected to the first section, and the other first extension portion is connected to the second section.

[0013] In some embodiments of the present application, the substrate includes a third flexible circuit board and a reinforcement plate connected to the third flexible circuit board, and the third flexible circuit board, the first flexible circuit board and the second flexible circuit board are integrally arranged to apply tension to the second connecting segment and the fifth connecting segment, respectively, to improve the stability of the fixation.

[0014] In some embodiments of the present application, the first main body is provided with a virtual tangent line, and the virtual tangent line is arranged obliquely relative to the first direction. Along the second direction, the projection of the end of the second connecting segment away from the first connecting segment and the projection of the virtual tangent line at least partially overlap. When the external force applied by the third connecting segment to the second connecting segment reaches the threshold value of the virtual tangent line breaking, the virtual tangent line is disconnected so that the end of the second connecting segment away from the first connecting segment can move relative to the substrate, reducing the risk of the first flexible circuit board breaking. The virtual tangent line is arranged obliquely relative to the first direction so as to extend the length of the virtual tangent line to increase the threshold value of the virtual tangent line breaking, thereby reducing the risk of the virtual tangent line breaking during the assembly process of the battery.

[0015] In some embodiments of the present application, there are two virtual tangent lines, and the two virtual tangent lines intersect so that the virtual tangent lines are broken when a threshold value is reached.

[0016] An embodiment of the present application further provides an electrical device, comprising any one of the batteries in the above embodiments.

[0017] In the above-mentioned battery, the electronic component is connected to the side of the substrate facing the first packaging edge to reduce the risk of the electronic component being directly impacted by external force. The second adhesive portion is used to support the substrate through the first connecting portion so that a gap is formed between the area of ​​the first adhesive portion where the second adhesive portion is not provided and the substrate. Along the second direction, the projection of the electronic component is located within the projection of the first adhesive and does not overlap with the projection of the second adhesive, so that the gap is used as a layout space for the electronic component on the substrate, thereby improving the space utilization of the protection plate assembly and the first packaging edge on the top wall, which is beneficial to improving the energy density of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of a battery in one embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of the partial disassembled structure of a battery in one embodiment of the present application.

[0020] Figure 3 It is a partial plan view of a battery in one embodiment of the present application.

[0021] Figure 4 yes Figure 1 Partial section view along section line AA.

[0022] Figure 5 It is a schematic structural diagram of a second adhesive component of a battery in one embodiment of the present application.

[0023] Figure 6 It is a schematic structural diagram of a third adhesive component of a battery in one embodiment of the present application.

[0024] Figure 7It is a schematic diagram of the partial disassembled structure of a battery in one embodiment of the present application.

[0025] Figure 8 It is a schematic structural diagram of a dotted tangent line of a battery in one embodiment of the present application.

[0026] Fig. 9 It is a schematic diagram of the structure of an electrical device in an embodiment of the present application.

[0027] Main component symbols

[0028] Battery 100

[0029] Electrical equipment 200

[0030] Battery Cell 10

[0031] Electrode assembly 11

[0032] Packaging bag 12

[0033] Main body 13

[0034] Top wall 131

[0035] First side wall 132

[0036] Second side wall 133

[0037] Packaging unit 14

[0038] First packaging edge 141

[0039] Tab 15

[0040] The first connection portion 151

[0041] Protection plate assembly 20

[0042] Substrate 21

[0043] The third flexible circuit board 211

[0044] Reinforcement plate 212

[0045] Electronic components 22

[0046] First flexible printed circuit board 23

[0047] The first connecting section 231

[0048] The second connecting section 232

[0049] The third connecting section 233

[0050] First connector 234

[0051] Second flexible printed circuit board 24

[0052] Fourth connecting section 241

[0053] Fifth connecting section 242

[0054] Sixth connecting section 243

[0055] Second connector 244

[0056] First adhesive member 30

[0057] First bonding portion 31

[0058] Second bonding portion 32

[0059] Gap 30a

[0060] Conductive member 40

[0061] 41

[0062] Section 242

[0063] Section 343

[0064] Second adhesive member 50

[0065] First body portion 51

[0066] First section 511

[0067] Second section 512

[0068] The third section 513

[0069] Virtual tangent 514

[0070] The first extension portion 52

[0071] The third adhesive member 60

[0072] Second main body portion 61

[0073] The second extension portion 62

[0074] First direction X

[0075] The second direction Z

[0076] The third direction Y

[0077] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0078] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0079] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centrally disposed element at the same time. When an element is considered to be "disposed on" another element, it may be directly disposed on the other element or there may be a centrally disposed element at the same time.

[0080] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0081] It should be understood that, considering the actual processing tolerance factors, in the technical solution of the present application, when the two elements are arranged parallel / vertically and in the same direction, there may be a certain angle between the two elements, and a tolerance of 0-±10% is allowed between the two elements. The tolerance of the two elements greater than, equal to or less than 0-±10% is allowed.

[0082] An embodiment of the present application provides a battery, including a battery cell, a protective plate assembly and a first adhesive. The battery cell includes an electrode assembly, a packaging bag and a plurality of tabs. The packaging bag includes a main body and a packaging part, and the electrode assembly is accommodated in the main body. The main body includes a top wall, and the packaging part includes a first packaging edge, the first packaging edge is connected to the top wall and extends along a first direction, and the first packaging edge and the top wall are arranged oppositely along a second direction. The first direction is the thickness direction of the battery cell, and the second direction is perpendicular to the first direction. A plurality of tabs are electrically connected to the electrode assembly, and each tab includes a first connecting portion extending from the first packaging edge. The protective plate assembly includes a substrate and an electronic component, the substrate and the first packaging edge are arranged oppositely along the second direction, and the electronic component is connected to a side of the substrate facing the first packaging edge. The first adhesive includes a first adhesive portion and a plurality of second adhesive portions convexly arranged on one side of the first adhesive portion, and the side of the first adhesive portion facing away from the second adhesive portion is bonded to the side of the first packaging edge facing the substrate, and each first connecting portion extends between the substrate and a second adhesive portion and is electrically connected to the substrate. Along the second direction, the projection of the electronic component is located within the projection of the first adhesive component and does not overlap with the projection of the second adhesive portion.

[0083] In the above-mentioned battery, the electronic component is connected to the side of the substrate facing the first packaging edge to reduce the risk of the electronic component being directly impacted by external force. The second adhesive portion is used to support the substrate through the first connecting portion so that a gap is formed between the area of ​​the first adhesive portion where the second adhesive portion is not provided and the substrate. Along the second direction, the projection of the electronic component is located within the projection of the first adhesive and does not overlap with the projection of the second adhesive, so that the gap is used as a layout space for the electronic component on the substrate, thereby improving the space utilization of the protection plate assembly and the first packaging edge on the top wall, which is beneficial to improving the energy density of the battery.

[0084] The embodiments of the present application are further described with reference to the accompanying drawings.

[0085] See also Figure 1 , an embodiment of the present application provides a battery 100. The battery 100 includes a battery cell 10, a protection plate assembly 20 and a first adhesive member 30. The protection plate assembly 20 is electrically connected to the battery cell 10 and is configured to be electrically connected to an external circuit. The first adhesive member 30 is bonded between the fixed protection plate assembly 20 and the battery cell 10 to improve the connection strength between the protection plate assembly 20 and the battery cell 10. The battery 100 may be, but is not limited to, a secondary battery, which refers to a battery that can be used continuously by activating the active material by charging after the battery is discharged.

[0086] The battery cell 10 includes an electrode assembly 11, a packaging bag 12 and a plurality of tabs 15. The electrode assembly 11 is used to convert chemical energy into electrical energy. Specifically, the electrode assembly 11 includes a positive electrode sheet, a separator and a negative electrode sheet arranged in sequence. Optionally, the positive electrode sheet, the separator and the negative electrode sheet are a winding structure or a laminated structure.

[0087] The packaging bag 12 includes a main body 13 and a packaging part 14. The electrode assembly 11 is accommodated in the main body 13, and the packaging part 14 is used to seal the main body 13. Optionally, the packaging bag 12 is made by folding an aluminum-plastic film, the main body 13 is the part where the aluminum-plastic film is provided with a punch hole, and the packaging part 14 is the part where the aluminum-plastic film overlaps.

[0088] Please also read Figure 2 and Figure 3 The main body 13 includes a top wall 131. The packaging portion 14 includes a first packaging edge 141, the first packaging edge 141 is connected to the top wall 131 and extends along the first direction X, and the first packaging edge 141 and the top wall 131 are arranged opposite to each other along the second direction Z. The second direction Z is perpendicular to the first direction X.

[0089] Optionally, the first direction X is a thickness direction of the battery cell 10 , and the second direction Z is a length direction of the battery cell 10 .

[0090] A plurality of tabs 15 are electrically connected to the electrode assembly 11. Each tab 15 includes a first connection portion 151 extending from the first packaging edge 141. The first connection portion 151 is used to electrically connect to the protection plate assembly 20. It is understandable that each tab 15 also includes a second connection portion (not shown), which is accommodated in the main body 13 and the packaging portion 14, one end of the second connection portion is connected to the electrode assembly 11, and the other end is connected to the first connection portion 151, so that each tab 15 is electrically connected between the electrode assembly 11 and the protection plate assembly 20.

[0091] The protection board assembly 20 includes a substrate 21 and an electronic component 22. The substrate 21 and the electronic component 22 cooperate to protect the battery cell 10, such as voltage monitoring, current detection, temperature monitoring, insulation monitoring, etc. of the battery cell 10, so as to reduce the risk of the battery cell 10 being in an overcharge, over-discharge, overcurrent, short circuit state and ultra-high temperature charge and discharge state.

[0092] The substrate 21 and the first packaging edge 141 are disposed opposite to each other along the second direction Z. The electronic component 22 is connected to a side of the substrate 21 facing the first packaging edge 141 to reduce the risk of the electronic component 22 being directly impacted by external forces.

[0093] Please continue reading Figure 2 and Figure 3 , the first adhesive member 30 includes a first adhesive portion 31 and a plurality of second adhesive portions 32 protruding from one side of the first adhesive portion 31. The side of the first adhesive portion 31 facing away from the second adhesive portion 32 is bonded to the side of the first packaging edge 141 facing the substrate 21. Each first connecting portion 151 extends between the substrate 21 and one of the second adhesive portions 32 and is electrically connected to the substrate 21. The second adhesive portion 32 supports the substrate 21 through the first connecting portion 151, so that a gap 30a is formed between the area of ​​the first adhesive portion 31 where the second adhesive portion 32 is not provided and the substrate 21. It should be noted that, when observed along the first direction X, the gap 30a is formed between two adjacent second adhesive portions 32, and / or formed on the side of the outermost second adhesive portion 32 facing away from the adjacent second adhesive portion 32.

[0094] Along the second direction Z, the projection of the electronic component 22 is located within the projection of the first adhesive part 30 and does not overlap with the projection of the second adhesive part 32, so that the gap 30a can be used as the accommodating space for the substrate of the electronic component 22, thereby improving the space utilization of the protection plate assembly 20 and the first packaging edge 141 on the top wall 131, which is beneficial to improving the energy density of the battery 100.

[0095] In some embodiments, the number of the tabs 15 and the number of the second adhesive portions 32 are three, respectively, and the three second adhesive portions 32 are arranged at intervals on one side of the first adhesive portion 31 along the third direction Y. The first direction X, the second direction Z and the third direction Y are perpendicular to each other. Optionally, the third direction Y is the width direction of the battery cell 10.

[0096] Multiple tabs 15 are helpful to reduce internal resistance, and multiple second bonding portions 32 are helpful to improve support stability. Optionally, the number of tabs 15 and second bonding portions 32 can be 2, 4, 5, 6, 7, etc., respectively.

[0097] In the above-mentioned battery 100, the electronic component 22 is connected to the side of the substrate 21 facing the first packaging edge 141 to reduce the risk of the electronic component 22 being directly impacted by external forces. The second adhesive portion 32 is used to support the substrate 21 through the first connecting portion 151, so that a gap 30a is formed between the area of ​​the first adhesive portion 31 where the second adhesive portion 32 is not provided and the substrate 21. Along the second direction Z, the projection of the electronic component 22 is located within the projection of the first adhesive 30 and does not overlap with the projection of the second adhesive portion 32, so that the gap 30a is used as a storage space for the substrate of the electronic component 22, thereby improving the space utilization rate of the protection plate assembly 20 and the first packaging edge 141 on the top wall 131, which is conducive to improving the energy density of the battery 100.

[0098] Please continue reading Figure 2 and Figure 3 In some embodiments, along the second direction Z, the thickness of the first adhesive portion 31 is 0.1 mm to 0.3 mm, so as to improve the structural strength of the first adhesive portion 31 and limit the space occupied by the first adhesive portion 31 in the second direction Z. The thickness of the second adhesive portion 32 is 0.2 mm to 0.6 mm, so as to improve the structural strength of the second adhesive portion 32 and limit the space occupied by the second adhesive portion 32 in the second direction Z. The height of the gap 30a between the area of ​​the first adhesive portion 31 where the second adhesive portion 32 is not provided and the substrate 21 is 0.6 mm to 1 mm, so that the gap 30a can meet the layout space requirements of the electronic components 22 with a higher height.

[0099] It should be noted that the height of the gap 30a includes the height of the second bonding portion 32, the thickness of the first connecting portion 151 located between the substrate 21 and the second bonding portion 32, and at least a partial thickness of a conductive member (such as a nickel sheet or a nickel block) on the substrate 21 used to connect the first connecting portion 151.

[0100] Optionally, the thickness of the first bonding portion 31 can be 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, and any other numerical value in the range of 0.1mm to 0.3mm. The thickness of the second bonding portion 32 can be 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, and any other numerical value in the range of 0.2mm to 0.6mm. The height of the gap 30a can be 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1mm, and any other numerical value in the range of 0.6mm to 1mm.

[0101] Further, the thickness of the first adhesive portion 31 is 0.15 mm to 0.2 mm, so as to further improve the structural strength of the first adhesive portion 31 and limit the space occupied by the first adhesive portion 31 in the second direction Z. The thickness of the second adhesive portion 32 is 0.25 mm to 0.35 mm, so as to further improve the structural strength of the second adhesive portion 32 and limit the space occupied by the second adhesive portion 32 in the second direction Z.

[0102] In some embodiments, the first bonding part 31 is a double-sided tape, and the second bonding part 32 is a foam tape. During the preparation process, the second bonding part 32 is first bonded to one side of the first bonding part 31, and then multiple second bonding parts 32 are bonded at one time or multiple conductive parts on the substrate 21 are bonded at one time to reduce the production process and reduce the production cost.

[0103] It is understandable that, in other embodiments, the first adhesive portion 31 and the second adhesive portion 32 may be an integrally arranged colloid structure.

[0104] Please also read Figure 2 and Figure 4 In some embodiments, the projection of the first connecting portion 151 extending to the portion between the substrate 21 and the second adhesive portion 32 is located within the projection of the corresponding second adhesive portion 32 to improve the stability of the support of the second adhesive portion 32 .

[0105] In some embodiments, the battery 100 further includes a conductive member 40. The conductive member 40 is a U-shaped nickel sheet, and the conductive member 40 includes a first section 41, a second section 42, and a third section 43. The first section 41 and the second section 42 are arranged opposite to each other along the second direction Z, and the two ends of the third section 43 are respectively connected to the first section 41 and the second section 42. The side of the first section 41 facing away from the second section 42 is connected to the substrate 21, at least part of the first connecting portion 151 is located between the first section 41 and the second section 42, and the side of the second section 42 facing away from the first section 41 is at least partially bonded to the second bonding portion 32, so as to improve the connection strength between the second bonding portion 32 and the conductive member 40, thereby improving the stability of the support of the second bonding portion 32.

[0106] It is understandable that, in other embodiments, the side of the second bonding portion 32 facing away from the first bonding portion 31 is bonded to the first connection portion 151 to improve the connection strength between the second bonding portion 32 and the first connection portion 151, thereby improving the support stability of the second bonding portion 32. Specifically, a nickel block is provided on one side of the substrate 21 facing the first connection portion 151, one side of the first connection portion 151 is connected to the nickel block, and the other side of the first connection portion 151 is bonded to the second bonding portion 32.

[0107] Please also read Figure 2 and Figure 5 In some embodiments, the protection plate assembly 20 further includes a first flexible circuit board 23. The first flexible circuit board 23 includes a first connecting section 231, a second connecting section 232 and a third connecting section 233 connected in sequence, the second connecting section 232 is located on the side of the substrate 21 away from the first adhesive 30, the second connecting section 232 and the substrate 21 are arranged opposite to each other along the second direction Z, the first connecting section 231 is connected between the substrate 21 and the second connecting section 232, the third connecting section 233 extends along the second direction Z and is provided with a first connector 234, and the first connector 234 is configured to connect to an external circuit. When the third connecting section 233 is subjected to an external force, it will drive the second connecting section 232 to fold with the first connecting section 231 as a fulcrum.

[0108] The main body 13 further includes a first side wall 132 and a second side wall 133 that are oppositely disposed along the first direction X. The first side wall 132 and the second side wall 133 are both connected to the top wall 131 .

[0109] The battery 100 further includes a second adhesive member 50. The second adhesive member 50 includes a first main body portion 51 and a first extension portion 52 connected to the first main body portion 51, at least a portion of the first main body portion 51 is adhered to a side of the second connecting segment 232 away from the substrate 21, and at least a portion of the first extension portion 52 is adhered to the first side wall 132 and / or the second side wall 133, so as to apply a tensile force to the second connecting segment 232 to fix the second connecting segment 232 to one side of the substrate 21.

[0110] In some embodiments, the first main body portion 51 is bonded to a side of the second connecting segment 232 away from the substrate, and extends to a side of the substrate 21 away from the first adhesive component 30 to bond to the substrate 21, so as to further apply a pulling force to the second connecting segment 232 to fix the second connecting segment 232 to one side of the substrate 21.

[0111] Please also read Figure 6 and Figure 7 In some embodiments, the battery further includes a third adhesive member 60. The third adhesive member 60 includes a second main body portion 61 and two second extension portions 62 connected to both sides of the second main body portion 61. At least a portion of the second main body portion 61 is bonded to a side of the substrate 21 away from the first adhesive member 30, and at least a portion of the second main body portion 61 is bonded to a side of the second connecting segment 232 facing the substrate 21, so as to apply a tensile force to the second connecting segment 232 to fix the second connecting segment 232 to one side of the substrate 21.

[0112] In some embodiments, the two second extension portions 62 are respectively bonded to the first side wall 132 and the second side wall 133 to apply a pulling force to the second main body portion 61 so that the second main body portion 61 fixes the substrate 21 to one side of the first packaging edge 141. In addition, the two second extension portions 62 are also on both sides of the gap 30a in the first direction X to reduce the risk of impurities entering the gap 30a and interfering with electronic components.

[0113] In some embodiments, along the first direction X, the portion of the second extension portion 62 bonded to the first side wall 132 and the second side wall 133 does not overlap with the portion of the first extension portion 52 bonded to the first side wall 132 or the second side wall 133, so as to reduce the risk of damage caused by concentrated force on the first side wall 132 or the second side wall 133.

[0114] In some embodiments, the second main body portion 61 is bonded to the side of the substrate 21 away from the first adhesive component 30, and extends between the substrate 21 and the first main body portion 51 to bond to the substrate 21 and the first main body portion 51, so as to increase the connection area and connection strength between the second main body portion 61 and the substrate 21.

[0115] Please also read Figure 2 and Figure 5In some embodiments, the protection plate assembly 20 further includes a second flexible circuit board 24. The second flexible circuit board 24 includes a fourth connecting segment 241, a fifth connecting segment 242 and a sixth connecting segment 243 connected in sequence, the fifth connecting segment 242 is located on the side of the substrate 21 away from the first adhesive 30, the fifth connecting segment 242 and the substrate 21 are arranged opposite to each other along the second direction Z, the fourth connecting segment 241 is connected between the substrate 21 and the fifth connecting segment 242, the fourth connecting segment 241 and the first connecting segment 231 are arranged at intervals along the third direction Y, the sixth connecting segment 243 extends along the second direction Z and is provided with a second connector 244, and the second connector 244 is configured to connect an external circuit. When the sixth connecting segment 243 is subjected to an external force, it will drive the fifth connecting segment 242 to fold with the fourth connecting segment 241 as a fulcrum.

[0116] The first main body portion 51 includes a first section 511 and a second section 512 arranged along a third direction Y. The first section 511 is bonded to the second connecting section 232, and the second section 512 is bonded to the fifth connecting section 242, so that the first main body portion 51 can simultaneously fix the second connecting section 232 and the fifth connecting section 242 to one side of the substrate 21.

[0117] In some embodiments, the first main body 51 further includes a third section 513 located between the first section 511 and the second section 512 , and the third section 513 is spaced apart from the substrate 21 along the second direction Z, or the third section 513 is bonded to a side of the substrate 21 away from the first adhesive 30 .

[0118] In some embodiments, there are two first extension portions 52, one of which is connected to the first section 511 and the other is connected to the second section 512, so as to apply tension to the second connecting section 232 and the fifth connecting section 242 respectively to improve the stability of the fixation.

[0119] Please also read Figure 5 , Figure 6 and Figure 7 In some embodiments, the first main body 51 is provided with a virtual tangent line 514, and along the second direction Z, the projection of the end of the second connecting segment 232 away from the first connecting segment 231 and the projection of the virtual tangent line 514 at least partially overlap. When the external force applied by the third connecting segment 233 to the second connecting segment 232 reaches the threshold value of the virtual tangent line 514 breaking, the virtual tangent line 514 is disconnected so that the end of the second connecting segment 232 away from the first connecting segment 231 can move relative to the substrate 21, thereby reducing the risk of the first flexible circuit board 23 breaking. The virtual tangent line 514 is inclined relative to the first direction X, so as to extend the length of the virtual tangent line 514 to increase the threshold value of the virtual tangent line 514 breaking, thereby reducing the risk of the virtual tangent line 514 breaking during the assembly process of the battery 100.

[0120] In some embodiments, along the second direction Z, the projection of the end of the fifth connecting segment 242 away from the fourth connecting segment 241 and the projection of the virtual tangent line 514 at least partially overlap. When the external force applied by the sixth connecting segment 243 to the fifth connecting segment 242 reaches a threshold value for breaking the virtual tangent line 514, the virtual tangent line 514 is disconnected so that the end of the fifth connecting segment 242 away from the fourth connecting segment 241 can move relative to the substrate 21, thereby reducing the risk of breaking the second flexible circuit board 24.

[0121] Please also read Figure 8 In some embodiments, the number of the virtual tangent lines 514 is two, and the two virtual tangent lines 514 intersect with each other so that the virtual tangent lines 514 are broken when a threshold is reached.

[0122] Optionally, the virtual tangent line 514 is formed by a plurality of through holes arranged in the first main body portion 51 .

[0123] Please refer again Figure 2 and Figure 4 In some embodiments, the substrate 21 includes a third flexible circuit board 211 and a reinforcing plate 212. The third flexible circuit board 211 is arranged opposite to the first packaging edge 141 along the second direction Z. The reinforcing plate 212 is connected to the side of the third flexible circuit board 211 away from the first packaging edge 141 to improve the structural strength of the substrate 21. The third flexible circuit board 211, the first flexible circuit board 23, and the second flexible circuit board 24 are integrally arranged to improve the structural stability of the protection plate assembly 20. Among them, the second connecting section 232 and the fifth connecting section 242 are both located on the side of the reinforcing plate 212 away from the third flexible circuit board 211.

[0124] See also Fig. 9 The embodiment of the present application further provides an electric device 200, comprising any one of the batteries 100 in the above embodiments. The electric device 200 may be, but is not limited to, an electronic terminal such as a mobile phone, a tablet, a camera, or a drone.

[0125] In summary, in the above-mentioned battery 100 and electrical equipment 200, the electronic component 22 is connected to the side of the substrate 21 facing the first packaging edge 141 to reduce the risk of the electronic component 22 being directly impacted by external force. The second adhesive portion 32 is used to support the substrate 21 through the first connecting portion 151, so that a gap 30a is formed between the area of ​​the first adhesive portion 31 where the second adhesive portion 32 is not provided and the substrate 21. Along the second direction Z, the projection of the electronic component 22 is located within the projection of the first adhesive 30 and does not overlap with the projection of the second adhesive portion 32, so that the gap 30a is used as the layout space of the electronic component 22 on the substrate 21, thereby improving the space utilization rate of the protective plate assembly 20 and the first packaging edge 141 on the top wall 131, which is beneficial to improve the energy density of the battery 100.

[0126] In addition, those skilled in the art may also make other changes within the spirit of the present application. Of course, these changes made according to the spirit of the present application should be included in the scope disclosed in the present application.

Claims

1. A battery, comprising a battery cell and a protection board assembly, characterized in that: The battery cell comprises an electrode assembly, a packaging bag and a plurality of tabs, the packaging bag comprises a main body and a packaging part, the electrode assembly is accommodated in the main body, the main body comprises a top wall, the packaging part comprises a first packaging edge, the first packaging edge is connected to the top wall and extends along a first direction, the first packaging edge and the top wall are arranged opposite to each other along a second direction, the first direction is a thickness direction of the battery cell, the second direction is perpendicular to the first direction, the plurality of tabs are electrically connected to the electrode assembly, and each of the tabs comprises a first connecting portion extending from the first packaging edge; The protection plate assembly comprises a substrate and an electronic component, the substrate and the first packaging edge are arranged opposite to each other along the second direction, and the electronic component is connected to a side of the substrate facing the first packaging edge; The battery also includes a first adhesive, which includes a first adhesive portion and a plurality of second adhesive portions protruding from one side of the first adhesive portion, the side of the first adhesive portion facing away from the second adhesive portion is adhered to a side of the first packaging edge facing the substrate, each of the first connecting portions extends between the substrate and one of the second adhesive portions and is electrically connected to the substrate, and along the second direction, the projection of the electronic component is located within the projection of the first adhesive and does not overlap with the projection of the second adhesive portion.

2. The battery according to claim 1, characterized in that Along the second direction, the thickness of the first adhesive portion is 0.1 mm to 0.3 mm; the thickness of the second adhesive portion is 0.2 mm to 0.6 mm; and the height of the gap between the substrate and the area of ​​the first adhesive portion where the second adhesive portion is not provided is 0.6 mm to 1 mm.

3. The battery according to claim 1, characterized in that A side of the second bonding portion facing away from the first bonding portion is bonded to the first connecting portion.

4. The battery according to claim 1, characterized in that The battery also includes a conductive member, which includes a first section, a second section and a third section, the first section and the second section are arranged opposite to each other along the second direction, two ends of the third section are respectively connected to the first section and the second section, a side of the first section facing away from the second section is connected to the substrate, at least a part of the first connecting portion is located between the first section and the second section, and a side of the second section facing away from the first section is bonded to the second bonding portion.

5. The battery according to claim 1, characterized in that The protection plate assembly further includes a first flexible circuit board, the first flexible circuit board includes a first connecting section, a second connecting section and a third connecting section connected in sequence, the second connecting section is located on a side of the substrate away from the first adhesive member, the second connecting section and the substrate are arranged opposite to each other along the second direction, the first connecting section is connected between the substrate and the second connecting section, the third connecting section extends along the second direction and is provided with a first connector, and the first connector is configured to connect to an external circuit; The main body also includes a first side wall and a second side wall arranged opposite to each other along the first direction, and the first side wall and the second side wall are both connected to the top wall; The battery also includes a second adhesive component, which includes a first main body and a first extension portion connected to the first main body, at least a portion of the first main body is adhered to a side of the second connecting section away from the substrate, and at least a portion of the first extension portion is adhered to the first side wall and / or the second side wall.

6. The battery according to claim 5, characterized in that The battery further includes a third adhesive member, the third adhesive member including a second main body portion and two second extension portions connected to two sides of the second main body portion, at least a portion of the second main body portion is adhered to a side of the substrate facing away from the first adhesive member, and at least a portion of the second main body portion is adhered to a side of the second connecting section facing the substrate; The two second extensions are respectively bonded to the first side wall and the second side wall. Along the first direction, the portion of the second extension bonded to the first side wall or the second side wall does not overlap with the portion of the first extension bonded to the first side wall or the second side wall.

7. The battery according to claim 5, characterized in that The protection plate assembly further includes a second flexible circuit board, the second flexible circuit board includes a fourth connecting segment, a fifth connecting segment and a sixth connecting segment connected in sequence, the fifth connecting segment is located on a side of the substrate away from the first adhesive component, the fifth connecting segment is arranged opposite to the substrate along the second direction, the fourth connecting segment is connected between the substrate and the fifth connecting segment, the fourth connecting segment and the first connecting segment are arranged at intervals along the third direction, the first direction, the second direction and the third direction are perpendicular to each other, the sixth connecting segment extends along the second direction and is provided with a second connector, and the second connector is configured to connect an external circuit; The first main body portion includes a first section and a second section arranged along the third direction, the first section is bonded to the second connecting section, and the second section is bonded to the fifth connecting section.

8. The battery according to claim 7, characterized in that The number of the first extension parts is two, one of which is connected to the first section, and the other of which is connected to the second section.

9. The battery according to claim 7, characterized in that The substrate includes a third flexible circuit board and a reinforcing plate connected to the third flexible circuit board, and the third flexible circuit board, the first flexible circuit board and the second flexible circuit board are integrally arranged.

10. The battery according to claim 5, characterized in that The first main body is provided with a virtual tangent line, which is inclined relative to the first direction. Along the second direction, a projection of one end of the second connecting section away from the first connecting section and a projection of the virtual tangent line at least partially overlap.

11. The battery according to claim 10, characterized in that The number of the virtual tangent lines is two, and the two virtual tangent lines intersect.

12. An electrical equipment, characterized in that: The electrical device comprises the battery according to any one of claims 1 to 11.

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