Battery and electric equipment

Abstract

The utility model discloses a battery which comprises a battery cell body, a top sealing edge, a protection switch element and a bonding piece, the top sealing edge is arranged at the top of the battery cell body, the protection switch element is arranged on the top sealing edge, and a temperature sensing part is arranged on one side, facing the top sealing edge, of the protection switch element; the bonding piece is located between the top sealing edge and the protection switch element, the bonding piece comprises a base material layer and a first adhesive layer which are arranged in a stacked mode, and the first adhesive layer is located on the side, facing the top sealing edge, of the base material layer; in the width direction of the top sealing edge, the first adhesive layer is not higher than the top sealing edge, and the base material layer is not lower than the temperature sensing piece. According to the invention, the battery cell top sealing edge can be narrowed to improve the energy density of the battery, and the problems of short circuit and battery cell corrosion caused by contact of the exposed temperature sensing part of the protection switch element with the battery cell can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and more specifically, to a battery and electrical equipment. Background Art

[0002] Batteries generally have a protective switching element, which is a protection device used to disconnect the circuit when the circuit temperature is too high, thereby ensuring the safety of the battery.

[0003] The protective switch element is typically mounted in the top seal area. Specifically, the conductive end of the protective switch body is welded to the battery's tab, and the exposed temperature sensor of the protective switch body is attached to the top seal side with an adhesive to sense the battery cell temperature. Currently, to avoid the risk of the temperature sensor contacting the battery cell, which could cause a short circuit or corrosion, the top seal covers the temperature sensor. This results in a wider battery cell seal width, which means the width of the battery cell electrode is correspondingly reduced, resulting in a decrease in battery capacity and energy density.

[0004] In summary, how to narrow the top seal to increase battery energy density while avoiding short circuits and cell corrosion caused by the exposed temperature sensing components of the protective switch element contacting the battery cell is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a battery that can narrow the top seal to improve the battery energy density while avoiding the problems of short circuit and battery cell corrosion caused by the exposed temperature sensing part of the protective switch element contacting the battery cell.

[0006] Another object of the present invention is to provide an electrical device comprising the battery.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A battery comprising a cell body, a top sealing edge, a protective switch element and an adhesive member;

[0009] The top sealing edge is provided at the top of the battery body, the protection switch element is provided on the top sealing edge, and a temperature sensing element is provided on a side of the protection switch element facing the top sealing edge;

[0010] The adhesive member is located between the top sealing edge and the protective switch element, and the adhesive member includes a base material layer and a first adhesive layer that are stacked, and the first adhesive layer is located on a side of the base material layer facing the top sealing edge;

[0011] Along the width direction of the top sealing edge, the first adhesive layer is not higher than the top sealing edge, and the base material layer is not lower than the temperature sensing component.

[0012] Preferably, the substrate layer comprises a hot melt adhesive layer;

[0013] And / or, the adhesive component further includes a second adhesive layer, which is located on the side of the substrate layer away from the top seal, and along the width direction of the top seal, the height of the second adhesive layer is not lower than the first adhesive layer and not higher than the substrate layer.

[0014] Preferably, the height of the first adhesive layer is flush with the height of the second adhesive layer, and the first adhesive layer and the second adhesive layer are symmetrically arranged on both sides of the substrate layer;

[0015] And / or, the height of the second adhesive layer is flush with the height of the substrate layer.

[0016] Preferably, along the width direction of the top sealing edge, the height of the substrate layer beyond the top sealing edge is Y1, wherein Y1 satisfies: 0mm≤Y1≤4mm;

[0017] and / or, along the width direction of the top sealing edge, the height of the first adhesive layer below the top sealing edge is Y2, wherein Y2 satisfies: 0 mm ≤ Y2 ≤ 3 mm;

[0018] and / or, along the width direction of the top sealing edge, the height of the top sealing edge below the protective switch element is Y3, wherein Y3 satisfies: 0 mm ≤ Y3 ≤ 3 mm;

[0019] And / or, along the width direction of the top sealing edge, the height of the base material layer exceeding the temperature sensing component is Y4, wherein Y4 satisfies: 0mm≤Y4≤2mm.

[0020] Preferably, along the width direction of the top sealing edge, the length of the substrate layer is W1, wherein W1 satisfies: 0.2 mm ≤ W1 ≤ 5 mm;

[0021] And / or, the length of the first adhesive layer is W2, wherein W2 satisfies: 1 mm ≤ W2 ≤ 3 mm.

[0022] Preferably, along the width direction of the top sealing edge, the distance between the adhesive component and the top of the battery cell body is greater than the distance between the temperature sensing component and the top of the battery cell body.

[0023] Preferably, along the length direction of the top sealing edge, the length of the adhesive component is greater than the length of the temperature sensing component.

[0024] Preferably, the protection switch element includes a protection switch body and two tab adapters;

[0025] One end of the two tab adapters is correspondingly connected to the two electrical output ends of the protection switch body and protective glue is provided at the connection points. The other ends of the two tab adapters are connected one-to-one with the two tabs provided on the battery cell body, and the adhesive is respectively connected to the two protective glues on both sides along the length direction of the top seal.

[0026] Preferably, the protection switch element includes a protection switch body and a tab adapter;

[0027] One end of the tab adapter is connected to an output end of the protection switch body and protective glue is provided at the connection. The other end of the tab adapter is connected to a tab provided on the battery cell body, and the adhesive is connected to the protective glue along one side of the length direction of the top seal.

[0028] An electrical device comprising any one of the batteries described above.

[0029] In the battery provided by the present invention, the temperature sensing element of the protective switch element is attached to the top seal by an adhesive. The adhesive includes a laminated substrate layer and a first adhesive layer. The first adhesive layer is located on the side of the substrate layer facing the top seal to fix the protective switch element on the top seal. In the width direction of the top seal, the first adhesive layer is not higher than the top seal, which can prevent the first adhesive layer from being exposed from the top seal and adhering to foreign objects or other components, thereby ensuring the safe use of the battery. In addition, in the width direction of the top seal, the substrate layer is not lower than the temperature sensing element, which means that in the width direction of the top seal, even if the temperature sensing element is long and extends out of the top seal, there is no need to increase the width of the top seal to cover the extended portion of the temperature sensing element. The substrate layer can replace the top seal to isolate the extended portion of the temperature sensing element from the battery body. This not only reduces the width of the top seal to improve the energy density of the battery, but also avoids the problem of the temperature sensing element contacting the battery body and causing short circuit and battery corrosion, thereby improving the safety of the battery and ensuring the safe use of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0031] Figure 1 This is a front view of an existing battery;

[0032] Figure 2 This is a schematic diagram of the back of an existing battery;

[0033] Figure 3It is a front view schematic diagram of a protection switch element in a conventional battery;

[0034] Figure 4 A schematic diagram of the back side of a protective switch element in a conventional battery;

[0035] Figure 5 A schematic diagram of the front of the battery provided in this application;

[0036] Figure 6 A schematic diagram of the back side of the battery provided in this application;

[0037] Figure 7 This is a front view schematic diagram of a U-shaped protection switch element in a battery provided by this application;

[0038] Figure 8 This is a schematic diagram of the back side of the U-shaped protection switch element in the battery provided by this application;

[0039] Figure 9 This is a front view schematic diagram of an L-shaped protection switch element in a battery provided by this application;

[0040] Figure 10 This is a schematic diagram of the back side of the L-shaped protection switch element in the battery provided by this application;

[0041] Figure 11 This is a schematic diagram of the structure of the double-sided tape in the battery provided in this application on the XY coordinate plane;

[0042] Figure 12 This is a schematic diagram of the structure of the first double-sided tape in the battery provided in this application on the YZ coordinate plane;

[0043] Figure 13 This is a schematic diagram of the installation of the first type of double-sided tape;

[0044] Figure 14 This is a schematic structural diagram of another double-sided tape in the battery provided in this application in the YZ coordinate plane.

[0045] Reference numerals:

[0046] 1-cell body; 2-top seal; 3-tab; 4-protective switch element; 5-adhesive;

[0047] 41-protection switch body; 42-temperature sensing element; 43-ear adapter; 44-protective adhesive;

[0048] 51-base material layer; 52-first adhesive layer; 53-second adhesive layer;

[0049] A- glue area; B- no glue area;

[0050] X-length direction of the top seal; Y-width direction of the top seal; Z-thickness direction of the top seal. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0052] The core of the utility model is to provide a battery that can narrow the top sealing edge to improve the battery energy density while avoiding the problems of short circuit and battery cell corrosion caused by the exposed temperature sensing part of the protection switch element contacting the battery cell.

[0053] Another core of the present invention is to provide an electrical device comprising the battery.

[0054] Please refer to Figures 5 to 8 The present application provides a battery cell body 1, a top sealing edge 2, a protective switching element 4 and an adhesive 5.

[0055] The top sealing edge 2 is provided on the top of the battery cell body 1 , the protection switch element 4 is provided on the top sealing edge 2 , and a temperature sensing component 42 is provided on the side of the protection switch element 4 facing the top sealing edge 2 .

[0056] The adhesive member 5 is located between the top sealing edge 2 and the protective switch element 4 . The adhesive member 5 includes a laminated substrate layer 51 and a first adhesive layer 52 . The first adhesive layer 52 is located on a side of the substrate layer 51 facing the top sealing edge 2 .

[0057] Along the width direction of the top sealing edge 2 , the first adhesive layer 52 is not higher than the top sealing edge 2 , and the base material layer 51 is not lower than the temperature sensing element 42 .

[0058] It should be noted that a general battery includes a cell body 1, two tabs 3 and a packaging bag. The ends of the two tabs 3 are arranged on the top of the cell body 1 and are electrically connected to the cell body 1. The packaging bag is wrapped around the periphery of the cell body 1 to encapsulate the cell body 1, and the packaging bag forms a top sealing edge 2 on the top of the cell body 1. The top sealing edge 2 is used to isolate the electrolyte inside the battery from the outside world. Figure 5 and Figure 6 shown.

[0059] It should be noted that the width of the top seal 2 directly affects the battery energy density. The wider the top seal 2, the larger the space occupied and the smaller the width of the battery cell electrode. Correspondingly, the battery capacity and energy density are smaller, and the battery energy density is low.

[0060] The protection switch element 4 is arranged in the top sealing edge 2 area, and generally includes a protection switch body 41, a temperature sensing element 42 and a tab adapter 43, such as Figures 6 to 10 As shown. The protection switch body 41 is a temperature fuse. One electrical output end of the protection switch body 41 is connected to the positive ear 3 through a tab adapter 43. When the battery is in use, the protection switch serves as the positive electrode of the battery, and the negative ear 3 of the battery body serves as the negative electrode of the battery, so that the protection switch element 4 is connected in series with the battery. When the battery temperature rises to the safe temperature of the temperature fuse, the temperature fuse expands due to heat and disconnects in the circuit, thereby achieving the purpose of protecting the battery safety. Optionally, the other electrical output end of the protection switch body 41 is connected to the negative ear 3 through a tab adapter 43, which can also realize the protection switch element 4 and the battery in series. In addition, the temperature sensing component 42 is arranged at the bottom end of the protection switch body 41 to sense the temperature close to the battery body 1. The above-mentioned temperature sensing component 42 and the tab adapter 43 are both made of metal materials with strong conductive properties.

[0061] Alternatively, the protection switch element 4 provided in the embodiment of the present application may also be a circuit breaker (internal circuit is closed or opened by a bimetallic strip), a PTC component, etc. The temperature sensing element 42 is preferably made of a material with good thermal conductivity, such as copper, iron, nickel, or alloys thereof.

[0062] The adhesive member 5 provided in the present application includes a substrate layer 51 and a first adhesive layer 52. The substrate layer 51 can be made of any non-adhesive material such as cotton paper, PET, PVC film, non-woven fabric, foam, acrylic foam, etc. The first adhesive layer 52 can be made of any adhesive material such as polyolefin, polyurethane, silicone, polyacrylate, rubber, etc., and as shown in FIG. Figure 13 As shown, the first adhesive layer 52 is provided on the side of the substrate layer 51 facing the top sealing edge 2 to fix the protection switch element 4 on the top sealing edge 2 .

[0063] Among them, along the width direction Y of the top sealing edge 2, the first adhesive layer 52 is not higher than the top sealing edge 2, that is, Y2≥0, which can prevent the first adhesive layer 52 from exposing the top sealing edge 2 and adhering to foreign objects or other components, thereby ensuring the safe use of the battery; in addition, along the width direction of the top sealing edge 2, the base material layer 51 is not lower than the temperature sensing component 42, that is, Y4≥0, which means that along the width direction of the top sealing edge 2, even if the temperature sensing component 42 is longer and extends out of the top sealing edge 2, there is no need to increase the width of the top sealing edge 2 to cover the protruding part of the temperature sensing component 42. The base material layer 51 can replace the top sealing edge 2 to isolate the protruding part of the temperature sensing component 42 from the battery body 1, which not only reduces the width of the top sealing edge 2 to improve the battery energy density, but also avoids the problem of the temperature sensing component 42 contacting the battery body 1 to cause short circuit and battery corrosion, thereby improving the safety of the battery, thereby ensuring the safe use of the battery.

[0064] Compared with the current battery structure with a protective switch element 4, the battery adopting the above-mentioned structure has the following beneficial effects: First, the substrate layer 51 can replace the top sealing edge 2 to isolate the protruding part of the temperature sensing component 42 from the battery cell body 1, reducing the width of the top sealing edge 2 to improve the battery energy density; Second, the substrate layer 51 covers the protruding part of the temperature sensing component 42, avoiding the problem of the temperature sensing component 42 contacting the battery cell body 1 and causing short circuit and battery cell corrosion, thereby improving the safety of the battery; Third, the first adhesive layer 52 located between the substrate layer 51 and the top sealing edge 2 does not expose the top sealing edge 2, avoiding the adhesion of foreign matter or other components such as protective plates that affect the safe use of the battery.

[0065] Considering the bonding method between the side of the substrate layer 51 facing away from the top sealing edge 2 and the protective switch element 4, in one embodiment, please refer to Figure 12-14 The adhesive member 5 also includes a second adhesive layer 53, which is located on the side of the substrate layer 51 away from the top sealing edge 2. Along the width direction of the top sealing edge 2, the height of the second adhesive layer 53 is not lower than the first adhesive layer 52 and not higher than the substrate layer 51.

[0066] Specifically, the second adhesive layer 53 can also be made of any adhesive material such as polyolefin, polyurethane, silicone, polyacrylate, or rubber. The second adhesive layer 53 is disposed on the side of the substrate layer 51 facing away from the top edge seal 2, that is, between the substrate layer 51 and the temperature sensor 42. This allows the side of the protective switch element 4 where the temperature sensor 42 is disposed to adhere to the substrate layer 51, thereby securely attaching the protective switch element 4 to the top edge seal 2 and improving the structural stability of the protective switch element 4. Furthermore, along the width of the top edge seal 2, when the temperature sensor 42 extends beyond the top edge seal 2 and the substrate layer 51 is not lower than the temperature sensor 42, the height of the second adhesive layer 53 is not lower than the first adhesive layer 52 and not higher than the substrate layer 51. This not only ensures that the portion of the substrate layer 51 extending beyond the top edge seal 2 is securely bonded to the protective switch element 4, thereby improving the structural stability of the portion extending beyond the top edge seal 2 and preventing it from falling off, but also prevents the second adhesive layer 53 from protruding from the substrate layer 51 and becoming adhered to foreign matter or other components.

[0067] In another embodiment, the substrate layer 51 includes a hot melt adhesive layer. It should be noted that the hot melt adhesive layer is a hot melt adhesive film. When heated, the hot melt adhesive film melts and becomes sticky. Therefore, the substrate layer with the hot melt adhesive layer can adhere and protect the switch element 4, and prevent the protruding portion of the substrate layer 51 from falling off.

[0068] In addition, the hot melt adhesive film is not sticky at room temperature. Therefore, after the substrate layer 51 is bonded to the protective switch element 4, even if the substrate layer 51 extends out of the top sealing edge 2, the extended portion of the substrate layer 51 will not adhere to foreign matter or other components and affect the safe use of the battery.

[0069] The second adhesive layer 53 has two implementation modes in the width direction of the top sealing edge 2. In the first embodiment, please refer to Figure 12 and Figure 13 The height of the first adhesive layer 52 is flush with the height of the second adhesive layer 53, and the first adhesive layer 52 and the second adhesive layer 53 are symmetrically arranged on both sides of the substrate layer 51. This improves the structural stability of the protective switch element 4 while minimizing the length of the second adhesive layer 53 in the width direction of the top sealing edge 2, thereby saving material costs.

[0070] In the second embodiment, please refer to Figure 14 The height of the second adhesive layer 53 is flush with that of the substrate layer 51 , so that the side of the substrate layer 51 facing away from the top sealing edge 2 is more firmly bonded to the protective switch element 4 , thereby further improving the structural stability of the protective switch element 4 .

[0071] It should be noted that although the second adhesive layer 53 of the second embodiment extends beyond the top seal 2 in its width direction, even though the second adhesive layer 53 does not contact the temperature sensor 42, the protective switch body 41 blocks most foreign matter, minimizing the amount of foreign matter adhered to the second adhesive layer 53 and negligible impact on the battery. Because the substrate layer 51 extends beyond the top seal 2 and faces the side of the substrate layer 51 that faces it, an adhesive layer is not required. This allows the substrate layer 51 to adhere to foreign matter or other components, ensuring safe battery operation.

[0072] On the basis of the above embodiment, along the width direction of the top sealing edge 2, the distance between the adhesive 5 and the top of the battery cell body 1 is greater than the distance between the temperature sensing component 42 and the top of the battery cell body 1, so that the adhesive 5 can wrap the temperature sensing component 42 to the greatest extent, avoiding the temperature sensing component 42 being exposed and in contact with the battery cell body 1, thereby causing short circuits and battery cell corrosion.

[0073] Based on the above examples, please refer to Figure 8 Along the length direction of the top sealing edge 2, the length of the adhesive 5 is greater than the length of the temperature sensing element 42, so as to avoid the temperature sensing element 42 from being exposed to the adhesive 5 in the length direction of the top sealing edge 2, thereby ensuring that the portion of the temperature sensing element 42 extending out of the top sealing edge 2 is completely not exposed, thereby effectively ensuring the safety of the battery.

[0074] In this embodiment, please refer to Figure 13 Along the width direction of the top sealing edge 2 , the height of the base material layer 51 beyond the top sealing edge 2 is Y1, wherein Y1 satisfies: 0mm≤Y1≤4mm.

[0075] Therefore, Y1≥0mm, even if the substrate layer 51 is not lower than the top sealing edge 2 in the Y direction, the substrate layer 51 replaces the top sealing edge 2 to isolate the protruding part of the temperature sensing component 42, which is beneficial to reducing the width of the top sealing edge 2 to improve the battery energy density; Y1≤4mm, to avoid the substrate layer 51 exceeding the tab insulation glue in the Y direction after the height exceeds 4mm, resulting in a loss of battery energy density.

[0076] In addition, the value of Y1 can also be any value within the range, for example, 1 mm, 2 mm or 3 mm.

[0077] In this embodiment, please refer to Figure 13 Along the width direction of the top sealing edge 2, the height of the first adhesive layer 52 below the top sealing edge 2 is Y2, wherein Y2 satisfies: 0mm≤Y2≤3mm.

[0078] Therefore, Y2≥0mm, even if the first adhesive layer 52 is not higher than the top sealing edge 2 in the Y direction, the first adhesive layer 52 is prevented from being exposed from the top sealing edge 2 and adhering to foreign objects or other components, thereby ensuring the safe use of the battery; Y2≤3mm, to avoid the first adhesive layer 52 being too small to cause the adhesion of the top sealing edge 2 to fail.

[0079] In addition, the value of Y2 can also be any value within the range, for example, 0.5 mm, 1 mm, 1.5 mm, 2 mm or 2.5 mm.

[0080] In this embodiment, please refer to Figure 13 Along the width direction of the top sealing edge 2 , the height of the top sealing edge 2 below the protective switch element 4 is Y3 , wherein Y3 satisfies: 0mm≤Y3≤3mm.

[0081] Therefore, Y3≥0mm, so that the top sealing edge 2 is not higher than the top edge of the protective switch element 4 in the Y direction, thereby narrowing the top sealing edge 2 to improve the battery energy density; Y3≤3mm, to avoid the protective switch element 4 exceeding the tab insulation glue in the Y direction after the height exceeds 3mm, resulting in a loss of battery energy density.

[0082] In addition, the value of Y3 can also be any value within the range, for example, 0.5 mm, 1 mm, 1.5 mm, 2 mm or 2.5 mm.

[0083] In this embodiment, please refer to Figure 13 Along the width direction of the top sealing edge 2 , the height of the base material layer 51 beyond the temperature sensing element 42 is Y4 , wherein Y4 satisfies: 0 mm ≤ Y4 ≤ 2 mm.

[0084] Therefore, Y4≥0mm, so that the substrate layer 51 is not lower than the temperature sensing component 42 in the Y direction, thereby avoiding the problem of the temperature sensing component 42 being exposed and contacting the battery body 1, causing short circuit and battery corrosion; Y4≤2mm, so as to avoid the problem of the substrate layer 51 extending too long from the top sealing edge 2 in the Y direction and being easily deformed and bent.

[0085] In addition, the value of Y4 can also be any value within this range, for example, 0.5 mm, 1 mm, or 1.5 mm.

[0086] In this embodiment, the thickness of the adhesive member 5 of the present application is between 0.05 mm and 0.5 mm.

[0087] That is, the total thickness of the base material layer 51 , the first adhesive layer 52 and the second adhesive layer 53 is set between 0.05 mm and 0.5 mm (inclusive), so as to reasonably set the thickness of the adhesive member 5 , thereby ensuring that the protection switch element 4 is firmly installed.

[0088] In addition, the thickness of the adhesive 5 may be any value within this range, for example, 0.1 mm, 0.15 mm, 0.2 mm, 0.3 mm, or 0.4 mm.

[0089] In this embodiment, along the width direction of the top sealing edge 2, the length of the first adhesive layer 52 is W2, wherein W2 satisfies: 1mm≤W2≤3mm. Figure 11 As shown, the first adhesive layer 52 and the base material layer 51 located at the same height segment form a glue area A, and the width of the glue area A is 1mm≤A≤3mm, which not only ensures that the protection switch element 4 is firmly bonded to the top sealing edge, but also avoids the loss of battery energy density caused by the glue area A being too wide.

[0090] In addition, the value of W2 can also be any value within this range, for example, 1.5 mm, 2 mm, or 2.5 mm.

[0091] In this embodiment, the length of the substrate layer 51 along the width direction of the top sealing edge 2 is W1, wherein W1 satisfies: 0.2mm≤W1≤5mm. Figure 11 As shown, the substrate layer 51 is removed from the adhesive area A in the Y direction to form a non-adhesive area B. The width of the non-adhesive area B is 0.2mm≤B≤2mm. This not only leaves the non-adhesive area B on the substrate layer 51 to allow the non-adhesive substrate layer 51 to protrude from the top sealing edge 2, but also avoids the problem of the non-adhesive substrate layer 51 protruding too long from the top sealing edge 2, thereby causing bending and deformation.

[0092] In addition, the value of W1 can also be any value within this range, for example, 0.5 mm, 1 mm, 1.2 mm, 1.5 mm, 2 mm, 3 mm, or 4 mm.

[0093] Optionally, the width of the top sealing edge 2 of the present application is L, and the width of the glue area A is set between 0.8~L-0.5mm, which can ensure that the glue area A does not expose the top sealing edge 2 of the battery cell, while ensuring the structural stability of the protective switching element 4.

[0094] In one embodiment, please refer to Figure 7 and Figure 8 The protective switch element 4 includes a protective switch body 41 and two tab adapters 43. One end of the two tab adapters 43 is welded to the two electrical output ends of the protective switch body 41, forming a U-shaped protective switch element 4. Protective glue 44 is provided at both welding points to protect the solder joints from environmental erosion. The other ends of the two tab adapters 43 are connected to the two tabs 3 provided on the battery body 1 in a one-to-one correspondence, so that the protective switch element 4 is connected in series with the battery. The adhesive 5 is provided between the temperature sensing element 42 and the top sealing edge 2, and is connected to the two protective glues 44 on both sides along the length direction of the top sealing edge 2. On the one hand, this improves the stability of the adhesive 5, which is conducive to improving the stability of the protective switch element 4. On the other hand, it increases the area of ​​the adhesive 5 covering the temperature sensing element 42, which is conducive to ensuring that the temperature sensing element 42 is completely not exposed.

[0095] In another embodiment, please refer to Figure 9 and Figure 10 The protective switch element 4 includes a protective switch body 41 and a tab adapter 43. One end of the tab adapter 43 is welded to an output end of the protective switch, forming an L-shaped protective switch element 4. A protective adhesive 44 is provided at the welding point to protect the solder joint from environmental erosion. The other end of the tab adapter 43 is connected to the positive tab 3 provided on the battery body 1, so that the protective switch element 4 is connected in series with the battery. The adhesive 5 is provided between the temperature sensing element 42 and the top sealing edge 2. The adhesive 5 is connected to the protective adhesive 44 along one side of the length direction of the top sealing edge 2. Similarly, on the one hand, the stability of the adhesive 5 is improved, which is conducive to improving the stability of the protective switch element 4. On the other hand, the area covered by the adhesive 5 on the temperature sensing element 42 is increased, which is conducive to ensuring that the temperature sensing element 42 is completely not exposed.

[0096] In addition to the above-mentioned battery, the present invention also provides an electrical device including the battery disclosed in the above-mentioned embodiment. For the structures of other parts of the electrical device, please refer to the prior art and will not be described in detail herein.

[0097] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0098] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0099] The above is a detailed introduction to the battery and electrical equipment provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that for ordinary technicians in this technical field, various improvements and modifications can be made to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A battery, characterized in that: It comprises a battery cell body (1), a top sealing edge (2), a protective switch element (4), and an adhesive member (5); The top sealing edge (2) is provided on the top of the battery cell body (1), the protection switch element (4) is provided on the top sealing edge (2), and a temperature sensing element (42) is provided on a side of the protection switch element (4) facing the top sealing edge (2); The adhesive component (5) is located between the top sealing edge (2) and the protective switch element (4), and the adhesive component (5) comprises a laminated base material layer (51) and a first adhesive layer (52), wherein the first adhesive layer (52) is located on a side of the base material layer (51) facing the top sealing edge (2); Along the width direction of the top sealing edge (2), the first adhesive layer (52) is not higher than the top sealing edge (2), and the base material layer (51) is not lower than the temperature sensing element (42).

2. The battery according to claim 1, characterized in that The substrate layer (51) includes a hot melt adhesive layer; And / or, the adhesive component (5) further comprises a second adhesive layer (53), the second adhesive layer (53) being located on a side of the base material layer (51) facing away from the top sealing edge (2), and the height of the second adhesive layer (53) along the width direction of the top sealing edge (2) being not lower than the first adhesive layer (52) and not higher than the base material layer (51).

3. The battery according to claim 2, characterized in that The height of the first adhesive layer (52) is flush with the height of the second adhesive layer (53), and the first adhesive layer (52) and the second adhesive layer (53) are symmetrically arranged on both sides of the substrate layer (51); And / or, the height of the second adhesive layer (53) is flush with the height of the substrate layer (51).

4. The battery according to claim 1, characterized in that Along the width direction of the top sealing edge (2), the height of the base material layer (51) beyond the top sealing edge (2) is Y1, wherein Y1 satisfies: 0mm≤Y1≤4mm; and / or, along the width direction of the top sealing edge (2), the height of the first adhesive layer (52) below the top sealing edge (2) is Y2, wherein Y2 satisfies: 0 mm ≤ Y2 ≤ 3 mm; and / or, along the width direction of the top sealing edge (2), the height of the top sealing edge (2) below the protective switch element (4) is Y3, wherein Y3 satisfies: 0mm≤Y3≤3mm; And / or, along the width direction of the top sealing edge (2), the height of the base material layer (51) exceeding the temperature sensing element (42) is Y4, wherein Y4 satisfies: 0mm≤Y4≤2mm.

5. The battery according to claim 1, characterized in that Along the width direction of the top sealing edge (2), the length of the substrate layer (51) is W1, wherein W1 satisfies: 0.2 mm ≤ W1 ≤ 5 mm; And / or, the length of the first adhesive layer (52) is W2, wherein W2 satisfies: 1 mm ≤ W2 ≤ 3 mm.

6. The battery according to claim 1, characterized in that Along the width direction of the top sealing edge (2), the distance between the adhesive component (5) and the top of the battery cell body (1) is greater than the distance between the temperature sensing component (42) and the top of the battery cell body (1).

7. The battery according to claim 1, characterized in that Along the length direction of the top sealing edge (2), the length of the adhesive component (5) is greater than the length of the temperature sensing component (42).

8. The battery according to any one of claims 1 to 7, characterized in that The protection switch element (4) comprises a protection switch body (41) and two tab adapters (43); One end of the two tab adapters (43) is correspondingly connected to the two electrical output ends of the protection switch body (41), and protective glue (44) is provided at the connection points. The other ends of the two tab adapters (43) are connected one-to-one with the two tabs (3) provided on the battery body (1), and the adhesive (5) is respectively connected to the two protective glues (44) on both sides along the length direction of the top sealing edge (2).

9. The battery according to any one of claims 1 to 7, characterized in that The protection switch element (4) comprises a protection switch body (41) and a tab adapter (43); One end of the tab adapter (43) is connected to an output end of the protection switch body (41), and a protective glue (44) is provided at the connection; the other end of the tab adapter (43) is connected to a tab (3) provided on the battery cell body (1); and the adhesive (5) is connected to the protective glue (44) along one side of the length direction of the top sealing edge (2).

10. An electrical device, characterized in that: A battery comprising the battery according to any one of claims 1 to 9.

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